JP5597111B2 - Building construction method - Google Patents

Description

  The present invention relates to a building construction method, and in particular, both upper floor outer wall members and lower floor outer wall members, and a torso in which each of the both is fixed at a position sandwiched between both in the vertical direction. The present invention relates to a method of building a building having

  A construction method for a building having both an upper floor outer wall member and a lower floor outer wall member, and a trunk member to which each of the both is fixed at a position sandwiched between the both in the vertical direction is already known. . In the construction method, generally, the lower floor outer wall member is fixed to the trunk difference material, and then the upper floor outer wall member is placed on the trunk difference material, and then the upper floor outer wall member is trunked by a fixing member such as a bolt. Fix to the difference material.

  By the way, in the conventional construction method, it is necessary to fix the upper floor outer wall member and the trunk difference material on the outer side of the upper floor outer wall member and the trunk difference material (that is, outside when viewed from the building before completion). (For example, see Patent Document 1). This is because the set position of the fixing member in the trunk difference material is outside the trunk difference material, and the inner side after placing the upper floor outer wall member on the trunk difference material (inside when viewed from the building before completion) This is because the hand cannot reach the set position. In addition, in order to prevent water from entering from the gap between the upper floor outer wall member and the lower floor outer wall member, it is necessary to install a waterproof mechanism between the upper floor outer wall member and the lower floor outer wall member. The attachment work was also performed after the upper floor outer wall member was fixed to the body difference material. This is the same as described above, because the upper floor outer wall member cannot be reached between the outer wall members from the inside after the upper floor outer wall member is placed on the trunk difference member.

JP 7-26646 A

  As described above, in the conventional construction method, the work of fixing the upper floor outer wall member to the trunk difference member and the work of attaching the waterproof mechanism are performed from the outside. However, when adopting such a construction method, for example, the above work is performed in an environment where adjacent buildings are close to each other (as viewed from the building before completion), such as a densely populated house, and it is difficult to secure a space outside. It was difficult. For this reason, the conventional building construction method requires advanced construction skills, and the construction quality depends on the skill of the operator.

  The present invention has been made in view of the above problems, and its object is to provide an upper floor outer wall member and a trunk member in an environment where it is difficult to secure a space outside a building such as a densely populated house. It is to provide a construction method capable of performing the fixing work and the attaching work of the waterproof mechanism between the upper floor outer wall member and the lower floor outer wall member from the inside of the building.

  According to the building construction method of the present invention, both of the upper floor outer wall member and the lower floor outer wall member, and the body to which each of the both is fixed at a position sandwiched between both in the vertical direction, are provided. A method of building a building having a difference material, wherein (A) the trunk difference material is placed on the lower floor outer wall member installed in advance, and the lower floor outer wall member is fixed to the trunk difference material. And (B) inserting a fixing member for fixing the upper floor outer wall member to the trunk difference material into a set hole formed in an upper end portion of the trunk difference material; and (C) the fixing member. Attaching a waterproofing mechanism for preventing water from entering through the gap between the two in the building while holding it in the state inserted into the set hole; (D) After the waterproof mechanism is installed, the upper floor outer wall member is attached to the waterproof mechanism and the waterproof mechanism. It is placed on the Sazai by having a step of fixing the upper floor outer wall member to the cylinder difference member by the fixing member inserted state to the setting hole, is solved.

  That is, according to the present invention, it is possible to easily construct a building, and the construction quality is hardly affected by the skill of the operator. More specifically, according to the present invention, the fixing of the upper floor outer wall member and the trunk difference material which has been performed outside the building (more precisely, when viewed from the building before completion) in the conventional method. There is no need to work outside the building. Similarly, it is possible to perform the work of attaching the waterproof mechanism, which has been conventionally performed outside the building, inside the building. Thereby, for example, even in an environment where it is difficult to secure a space outside such as a densely populated house, the above-described mounting operation can be easily performed. As a result, even in a densely populated area, good buildings are constructed, and the construction quality is less affected by the skill of the operator.

Further, in the building construction method described above, in the step of placing the trunk difference member on the lower floor outer wall member and fixing the lower floor outer wall member to the trunk difference member, H-shaped steel as the body difference material is placed on the lower flange portion provided in the H-shaped steel, and the lower flange portion is positioned on the front side of the center position in the width direction of the lower flange portion. In the step of bolting the outer wall member of the floor and inserting the fixing member into the set hole, of the upper flange portion provided in the H-shaped steel, it is located in front of the center position in the width direction of the upper flange portion. In the step of inserting a bolt as the fixing member into the set hole formed in the portion and attaching the waterproof mechanism, the waterproof mechanism is attached by reaching from the rear side of the H-shaped steel to the front side of the H-shaped steel. It is good as well.
In the upper flange portion provided in the H-shaped steel as the body difference material, when the set hole is formed in the portion located in front of the center position in the width direction, the upper floor outer wall member is mounted on the H-shaped steel. When placed, the hand cannot reach the set hole from the inside of the building, and it becomes difficult to insert a bolt into the set hole. Therefore, in such a case, the effect of the present invention is more effectively exhibited.
That is, it is not necessary to perform the work of fixing the upper floor outer wall member and the trunk difference material outside the building. And the attachment work of the waterproof mechanism is also performed by reaching from the rear side of the H-shaped steel to the front side of the H-shaped steel. Thereby, even if it is a densely populated house, the above work can be easily performed. As a result, the construction quality is stabilized regardless of the skill of the worker.

  In the building construction method described above, in order to hold the bolt in a state inserted in the set hole, a support member for supporting the bolt inserted in the set hole is provided with the support member. It is good also as having further the process installed between the said upper side flange part and the said lower side flange part so that may be located in the downward position of the said volt | bolt. With such a method, it is possible to hold the bolt with the bolt inserted into the set hole with a simple configuration.

  In the building construction method described above, the step of attaching the waterproof mechanism includes a first attachment step of attaching a first draining plate covering the H-shaped steel at a front position of the H-shaped steel, and the first draining of water. A second draining plate located at the front position of the plate is attached so that the lower end portion of the second draining plate is located at the front position of the upper end portion of the lower floor outer wall member and covers the upper end portion. It is good also as having an attachment process and the 3rd attachment process which attaches the decorative face material which makes a part of outer wall between both in the said building in the front position of said 2nd draining board. With this method, a more effective waterproof effect can be obtained.

  In the building construction method described above, when each of the two has a ventilation layer for ventilating air in each thickness direction, in the second attachment step, the second draining plate and A space is provided between the first drainage plate and the second drainage plate is attached so that the space and the ventilation layer of the lower floor outer wall member communicate with each other, and the upper floor outer wall member Is placed on the waterproof mechanism and the H-shaped steel, and in the step of fixing the upper floor outer wall member to the H-shaped steel, the space communicates with the ventilation layer of the upper floor outer wall member. The upper floor outer wall member may be placed on the waterproof mechanism and the H-shaped steel. With this method, the ventilation layer of the upper floor outer wall member and the lower floor outer wall member functions more effectively.

  In the building construction method, the first step of attaching the waterproof mechanism is to attach a first elastic rubber to an upper end portion of a front surface of the outer surface of the second draining plate. And a second attaching step of attaching a second elastic rubber to the upper end surface of the decorative face material, and the upper floor outer wall member is mounted on the waterproof mechanism and the H-shaped steel. In the step of fixing the upper floor outer wall member to the H-shaped steel, the upper floor so that the lower end portion of the upper floor outer wall member presses the first elastic rubber and the second elastic rubber. An outer wall member may be placed on the waterproof mechanism and the H-shaped steel. With such a method, it becomes possible to obtain a more effective waterproofing effect.

  In the building construction method described above, in the second attachment step, the second drained plate that is bent and has a step formed is lower than the second drained plate as viewed from the step. A part is attached so as to be positioned in front of the part on the upper side when viewed from the step, and before the third attaching step, a heat insulating member having a thickness corresponding to the step is attached to the second draining device. The plate further includes a step of being placed on a portion located on the upper side when viewed from the step and on a front side of the outer surface of the portion, and in the third attachment step, It is good also as attaching a face material to the front position of the said heat insulation member and said 2nd draining board. With this method, heat insulation in the vicinity of the trunk difference material can be achieved.

  According to the present invention, it becomes possible to perform the work of fixing the upper floor outer wall member and the trunk member and the work of attaching the waterproof mechanism inside the building. Thereby, for example, even in an environment where it is difficult to secure a space outside the building, such as a densely populated house, the above work can be easily performed. As a result, even in a densely populated area, good buildings are constructed, and the construction quality is less affected by the skill of the operator.

It is a schematic cross section of the whole building. It is the schematic cross section which showed the trunk | drum difference material 6 vicinity. It is sectional drawing which shows the structure of the upper floor outer wall panel. 3 is a front view of a support member 20. FIG. It is a figure which shows the supporting member 20 of the state attached to the predetermined position in the building 1 of a completion state. It is a flowchart which shows the construction method of this embodiment. FIG. 2 is a first diagram illustrating each construction stage in building work of a building 1. It is a 2nd figure which shows each construction step in the construction work of the building. It is a 3rd figure which shows each construction step in the construction work of the building. FIG. 6 is a fourth diagram illustrating each construction stage in the building work of the building 1. FIG. 6 is a fifth diagram illustrating each construction stage in the building work of the building 1. It is the 6th figure which shows each construction step in the construction work of the building. FIG. 7 is a seventh diagram illustrating each construction stage in the building work of the building 1. It is an 8th figure which shows each construction step in the construction work of the building. It is a 9th figure which shows each construction step in the construction work of the building 1. FIG. It is a figure which shows the procedure of the process of attaching the waterproof mechanism 9 and the heat insulation member 14. FIG. It is a schematic diagram which shows the mode of the operation | work which attaches the waterproof mechanism. It is the figure which showed the flow of the construction method of the conventional building.

<< Overall structure of building 1 >>
In describing the construction method according to the present embodiment, first, the configuration of the building 1 built by the construction method will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic cross-sectional view of the entire building 1. In the figure, an adjacent building H adjacent to the building 1 is indicated by a broken line. FIG. 2 is a schematic cross-sectional view showing the vicinity of the trunk difference material 6, and is an enlarged view of a range indicated by a symbol X in FIG. 1.

  In the following description, the inside (that is, the indoor side) of the building 1 is simply referred to as the inside, and the outside (that is, the outside) of the building 1 is simply referred to as the outside. Further, in the following description, the forward position of a certain member means an outer position as viewed from the certain member.

  The building 1 has a plurality of floors (a two-story house is shown as an example in FIG. 1), and in this embodiment, it is constructed in a densely populated area. That is, as shown in FIG. 1, the building 1 according to the present embodiment is close to the adjacent building H, and the space between the buildings is narrow. Therefore, the building method of the building 1 according to the present embodiment is applied in an environment where it is difficult to secure a working space outside the building 1 at the construction stage. The construction method of the building 1 according to this embodiment will be described later.

  As shown in FIG. 1, the building 1 according to the present embodiment includes a housing 2 as a framework (so-called shaft assembly), a roof 3, and outer wall panels 4 and 5 as outer wall members. Moreover, the frame 2 is provided with the trunk | drum difference material 6 between floors. The trunk difference member 6 is a horizontal member (beam member) disposed across the outer periphery of the building between the floors, and is H-shaped steel in the present embodiment. The trunk difference member 6 is disposed so that the two flange portions face each other in the vertical direction. Hereinafter, of the two flange portions, the one located on the upper side is referred to as the upper flange portion 7, and the one located on the lower side is referred to as the lower flange portion 8.

  Here, as shown in FIG. 2, the H-shaped steel as the trunk difference member 6 is located at a position sandwiched between the upper floor outer wall panel 4 and the lower floor outer wall panel 5 in the vertical direction. The upper floor outer wall panel 4 and the lower floor outer wall panel 5 are fixed to the trunk difference member 6 at this position.

  More specifically, as shown in FIG. 2, of the lower flange portion 8 provided in the H-shaped steel, a portion (hereinafter referred to as a front portion) that is located in front of the center position in the width direction of the lower flange portion 8. 8a), the lower floor outer wall panel 5 is bolted. That is, bolt holes Bh as an example of set holes are formed in the front portion 8 a of the lower flange portion 8 at regular intervals along the outer periphery of the building 1. A bolt Bo as an example of a fixing member is inserted into each bolt hole Bh, and the lower floor outer wall panel 5 is fixed (fastened) to the lower flange portion 8 by the bolt Bo. In addition, the width direction of each flange part 7 and 8 is what is called a flange width direction (direction shown by the arrow in FIG. 2).

  Similarly, the upper floor outer wall panel 4 is bolted to a portion of the upper flange portion 7 provided in the H-shaped steel that is located in front of the center position in the width direction of the upper flange portion 7 (hereinafter, the front portion 7a). Has been. That is, the front side portion 7a of the upper flange portion 7 is formed with bolt holes Bh for inserting the bolts Bo at regular intervals along the outer periphery of the building 1, and the bolts inserted into the respective bolt holes Bh. The upper flange portion 7 and the upper floor outer wall panel 4 are fixed (fastened) by Bo.

  On the other hand, a support member 20 is provided between the front portion 7a of the upper flange portion 7 and the front portion 8a of the lower flange portion 8 to support the bolt Bo inserted into the bolt hole Bh on the upper flange portion 7 side. ing. The support member 20 will be described in detail later.

  The upper floor outer wall panel 4 is an example of an upper floor outer wall member, and is a panel member that forms the outer wall of the second floor in the building 1 shown in FIG. The lower-floor outer wall panel 5 is an example of a lower-floor outer wall member, and is a panel member that forms the outer wall of the first floor in the building 1 shown in FIG. In the present embodiment, both the outer wall panels 4 and 5 have a multilayer structure. Hereinafter, the structure of the outer wall panels 4 and 5 in this embodiment is demonstrated. In addition, since the laminated structure of the upper floor outer wall panel 4 and the laminated structure of the lower floor outer wall panel 5 are substantially the same, only the structure of the upper floor outer wall panel 4 is demonstrated below.

  As shown in FIG. 3, the upper floor outer wall panel 4 has a plurality of layers in its thickness direction. FIG. 3 is a cross-sectional view showing the structure of the upper floor outer wall panel 4. Specifically, in the thickness direction of the upper floor outer wall panel 4, an outer wall material layer 4a, a ventilation layer 4b, a heat insulating material layer 4c, an air space layer 4d, and a gypsum board layer 4e are provided in order from the outside. ing. Further, in order to form the ventilation layer 4b, a spacer 4f for securing the ventilation layer 4b is provided at an appropriate interval between the outer wall material layer 4a and the heat insulating material layer 4c.

  Of the plurality of layers provided on the upper floor outer wall panel 4, the ventilation layer 4 b is provided to allow air to flow in order to prevent condensation in the outer wall panel. With the airflow flowing through the ventilation layer 4b, it is possible to exclude moisture that has passed through the gypsum board layer 4e from the room and brought into the wall to the outside. The airflow flowing in the ventilation layer 4b mainly flows in the ventilation layer 4b from below to above.

  In the present embodiment, in order to more effectively prevent dew condensation in the wall, a moisture-proof aluminum vapor-deposited film 4g is provided at the boundary position between the air space layer 4d and the heat insulating material layer 4c, and moisture-permeable and waterproof. The sheet 4h is provided at the boundary position between the ventilation layer 4b and the heat insulating material layer 4c. Furthermore, in this embodiment, in order to improve heat insulation performance, the heat insulating material layer 4c has a two-layer structure. Specifically, the inner layer 4i made of glass wool and the outer side where the glass wool is denser than the inner layer 4i. Layer 4j is provided.

  On the other hand, for the upper floor outer wall panel 4, as shown in FIG. 2, the outermost wall layer 4a located on the outermost side is longer in the vertical direction than the other layers and protrudes somewhat lower than the other layers. Yes. On the other hand, as shown in FIG. 2, the outer wall panel 5a of the lower floor is shorter in the vertical direction than the other layers, and its upper end position is somewhat lower than that of the other layers, as shown in FIG. is there.

  The upper floor outer wall panel 4 and the lower floor outer wall panel 5 described above are somewhat separated in the vertical direction. In other words, a gap is formed between both the upper floor outer wall panel 4 and the lower floor outer wall panel 5. The building 1 is provided with a waterproof mechanism 9 for preventing water from entering from the gap.

  As described above, the outer wall material layer 4 a located on the outermost side of the upper floor outer wall panel 4 protrudes somewhat lower than the other layers, and the outer wall material layer 5 a of the lower floor outer wall panel 5. Is shorter than the other layers, and its top position is somewhat lower than that of the other layers. As a result, as shown in FIG. 2, with respect to the gap formed between the upper floor outer wall panel 4 and the lower floor outer wall panel 5, the opening position thereof is somewhat shifted from the installation position of the trunk member 6 in the vertical direction. It has become a position.

<< Configuration of waterproof mechanism 9 >>
Next, the waterproof mechanism 9 described above will be described with reference to FIG.

  In order to prevent water from entering through the gap between the upper floor outer wall panel 4 and the lower floor outer wall panel 5 in the building 1, the waterproof mechanism 9 is located near the trunk difference member 6 (more specifically, the front of the trunk difference member 6. ). In particular, in the present embodiment, the waterproof mechanism 9 is attached to a front position of the trunk member 6 so that the lower end portion of the waterproof mechanism 9 spans the upper end portion of the lower floor outer wall panel 5. And as shown in FIG. 2, the waterproof mechanism 9 which concerns on this embodiment is the 1st draining board 10, the 2nd draining board 11, and the trunk | drum surface material 12 as a decorative face material as a main component. Have

  The first draining plate 10 is a metal plate that covers the H-shaped steel at a front position of the H-shaped steel that is the trunk difference material 6. The first draining plate 10 is bent in a substantially L shape in a side view, and is flat along the horizontal direction 10a and an intersecting portion 10b extending in a direction (vertical direction) intersecting the horizontal portion 10a. And have. As shown in FIG. 2, the horizontal portion 10a is placed on the upper flange portion 7, and the intersecting portion 10b covers the H-shaped steel so that the H-shaped steel does not face the gap.

  In addition, in the state where the first draining plate 10 is attached at a predetermined position, the lower end portion of the intersecting portion 10b reaches the upper end portion of the lower floor outer wall panel 5 in the vertical direction. Further, the intersecting portion 10b is bent outward at a midway position in the extending direction, and then bent again so as to extend along the original extending direction. That is, a step D1 is formed at a midway position in the extending direction of the intersecting portion 10b.

  In addition, on the surface located on the front side of the outer surface of the intersecting portion 10b, a substantially L-shaped angle 10c intersects with the vertical direction at a position slightly higher than the step D1 (in FIG. 2). Screwed at regular intervals (in the direction through the paper). On the above-mentioned surface, at a position slightly lower than the step D1, the substantially rectangular wave-shaped metal piece 10d is screwed at regular intervals in the direction intersecting the vertical direction (the direction penetrating the paper surface in FIG. 2). Has been.

  The second draining plate 11 is a metal plate positioned in front of the first draining plate 10 and extends along the first draining plate 10. The upper end portion of the second draining plate 11 is bent at a substantially right angle at regular intervals in a direction intersecting with the vertical direction (direction passing through the paper surface in FIG. 2). The bent portion engages with the above-described substantially L-shaped angle 10c and is screwed to the angle 10c. The second draining plate 11 is screwed to the above-described substantially rectangular wave-shaped metal piece 10d at the center in the extending direction. That is, the metal piece 10 d functions as a pedestal for attaching the second draining plate 11. And by attaching the 2nd draining board 11 as mentioned above, between the 2nd draining board 11 and the 1st draining board 10, the space S according to the height of the metal piece 10d is provided. Yes.

  Further, as shown in FIG. 2, the second draining plate 11 is bent a plurality of times at intermediate positions in the extending direction to form steps D <b> 2 and D <b> 3. In the second draining plate 11 attached at a predetermined position, the step formed on the upper side (hereinafter referred to as the upper step D2) is substantially the same position as the step D1 formed on the first draining plate 10 in the vertical direction. Is located. On the other hand, the step formed on the lower side (hereinafter referred to as the lower step D3) is positioned slightly above the upper end of the lower floor outer wall panel 5 (more specifically, the outer wall material layer 5a) in the vertical direction. doing.

  As a result of the formation of the steps D2 and D3, the portion of the second draining plate 11 that is located below the lower step D3 is finally in front of the upper end of the lower floor outer wall panel 5. It is supposed to be located. That is, the second draining plate 11 is arranged so that the lower end thereof covers the upper end of the lower floor outer wall panel 5. Thereby, the draining effect by the second draining plate 11 can be more effectively exhibited.

  The second draining plate 11 having the above configuration extends along the first draining plate 10 while forming a certain space S with the first draining plate 10. The space S communicates with the ventilation layers 4 b and 5 b of the outer wall panels 4 and 5. Thereby, each ventilation layer 4b, 5b of the upper-floor outer wall panel 4 and the lower-floor outer wall panel 5 promotes the ventilation | gas_flowing in the said ventilation | gas_flowing layer 4b, 5b, and exhibits the function which prevents the dew condensation in an outer-wall panel effectively. It becomes possible.

  The body surface material 12 is a surface material for forming a part of the outer wall between both the upper floor outer wall panel 4 and the lower floor outer wall panel 5 in the building 1 and closing the gap between the both at the opening position. is there. The body surface material 12 in the present embodiment is fixed to the second draining plate 11 via a base 13 made of a metal plate attached to the back surface of the body surface material 12.

  Further, in the state where the body surface material 12 is screwed to the second draining plate 11, the upper end portion of the body surface material 12 is higher than the upper step D2 formed on the second water draining plate 11 in the vertical direction. It protrudes somewhat upward (see FIG. 2). That is, an empty space is formed between the upper end portion of the trunk surface material 12 and the second draining plate 11 in a state where the trunk surface material 12 is screwed to the second draining plate 11. In this empty space, a heat insulating member 14 made of glass wool board is arranged. The heat insulating member 14 can enhance the heat insulating performance in the vicinity of the trunk difference member 6 (in other words, between the upper floor outer wall panel 4 and the lower floor outer wall panel 5).

  The heat insulating member 14 has a thickness corresponding to the height of the upper step D2, and is positioned at a portion on the upper side when viewed from the upper step D2 formed on the second draining plate 11 in the vertical direction, and Among the outer surfaces of the second draining plate 11, it is installed on the surface located on the front side (outside). Hereinafter, the part in which the heat insulation member 14 is installed among the outer surfaces which the 2nd draining board 11 has is called a heat insulation member installation surface.

  In addition, the trunk | drum surface material 12 in this embodiment is fragmented, In order to fill the clearance gap between the upper floor outer wall panel 4 and the lower floor outer wall panel 5 formed along the outer periphery of the building 1, the said outer periphery Are attached in series. Moreover, the gasket 15 is inserted in the joint (joint) of each trunk | drum surface material 12, and the permeation of the water from the said joint is prevented.

<< Configuration of Support Member 20 >>
Next, the configuration of the support member 20 will be described with reference to FIGS. 4 and 5. FIG. 4 is a front view of the support member 20. FIG. 5 is a view showing the support member 20 in a state of being attached to a predetermined position in the building 1 in a completed state.

  As described above, in the construction process of the building 1, the support member 20 has a bolt Bo for fixing the upper floor outer wall panel 4 to the trunk difference member 6 and a bolt hole Bh on the upper flange portion 7 side of the trunk difference member 6. It is a member for supporting the said bolt Bo so that it may be hold | maintained in the state inserted in. As shown in FIG. 4, the support member 20 includes a bolt holding mechanism 21 having a function of holding the bolt Bo, and a long body 22 that functions as a base of the bolt holding mechanism 21.

  The long body 22 includes a flat portion 22a and a standing portion 22b that stands from the flat portion 22a. As shown in FIGS. 4 and 5, the standing portion 22 b is a steel material having a substantially C-shaped cross-sectional shape and long in a predetermined direction, and the length thereof is a web of an H-shaped steel that is the trunk difference material 6. It is somewhat shorter than the dimensions.

  As shown in FIG. 4, the bolt holding mechanism 21 includes a screw portion 21a, a locking nut 21b attached to the screw portion 21a, and a dish-shaped receiving portion 21c joined to the tip of the screw portion 21a. The receiving portion 21c has a bottom plate 21d and a claw portion 21e extending from the outer periphery of the bottom plate 21d and substantially orthogonal to the bottom plate 21d, and can be positioned at the top of the support member 20 to grip the head of the bolt Bo. (See FIG. 5). Then, the screw portion 21a is inserted into a hole (not shown in FIGS. 4 and 5) formed in the flat portion 22a of the long body 22, and the locking nut 21b is positioned outside the flat portion 22a. The bolt holding mechanism 21 is assembled to the long body 22 by being attached to the screw portion 21a.

  In the bolt holding mechanism 21 in such a state, when the locking nut 21b is locked to the flat portion 22a of the long body 22, the screw portion 21a protrudes outside the flat portion 22a, and the receiving portion 21c is formed at the tip thereof. Comes to be located. And the protrusion amount of the said screw part 21a can be adjusted by operating the screw part 21a and the latching nut 21b. As a result, the position of the receiving portion 21 c can be changed along the longitudinal direction of the long body 22.

  As shown in FIG. 5, the support member 20 configured as described above has the upper flange portion 7 so that the receiving portion 21 c faces the bolt Bo set in the bolt hole Bh of the upper flange portion 7 of the trunk member 6. And the lower flange portion 8. Thereafter, the screw portion 21a and the locking nut 21b of the bolt holding mechanism 21 are operated to change the position of the receiving portion 21c to a position where the head of the bolt Bo can be gripped. As a result, the support member 20 can be held in a state where the bolt Bo is inserted into the bolt hole Bh.

  In the present embodiment, when the support member 20 is attached at a predetermined position, the two side portions 22c that are provided on the standing portion 22b of the elongated body 22 and that face each other are disposed between the body difference member 6 and the two side portions 22c. A nut for a bolt Bo (hereinafter referred to as a lower nut) that fixes the lower floor outer wall panel 5 is sandwiched (see FIG. 5). That is, an interval is provided between the two side portions 22c so that the lower nut can be sandwiched, and the support member 20 is positioned by positioning the lower nut within the interval. It will be. As a result, the position of the support member 20 can be prevented from shifting when the screw portion 21a of the bolt holding mechanism 21 is operated.

<< About the construction method of this embodiment >>
Next, the construction method of the building 1 having the above configuration will be described focusing on the fixing method of the upper floor outer wall panel 4 and the lower floor outer wall panel 5 and the trunk difference material 6 and the mounting method of the waterproof mechanism 9. As shown in FIG. 6, the construction method of the present embodiment includes a step S001 of placing the trunk difference member 6 on the lower floor outer wall panel 5 and fixing the lower floor outer wall panel 5 to the trunk difference member 6, and a trunk difference. Step S002 for inserting the bolt Bo for fixing the upper floor outer wall panel 4 to the material 6 into the bolt hole Bh, Step S003 for installing the support member 20 at a predetermined position, and Step S004 for attaching the waterproof mechanism 9 and the heat insulating member 14. And an upper floor outer wall panel 4 placed on the trunk difference material 6 and fixed to the trunk difference material 6. FIG. 6 is a flowchart showing the construction method according to this embodiment. And construction of the building 1 by the building method according to the present embodiment is advanced in the order of steps S001, S002, S003, S004, and S005.

  Hereinafter, each process will be described with reference to FIGS. Each of FIGS. 7 to 15 is a diagram showing each construction stage in the building work of the building 1 and shows a state in the vicinity of the trunk difference material 6.

<Step S001 for fixing the lower-floor outer wall panel 5 to the trunk difference material 6>
This step S001 is a step of placing the trunk difference material 6 on the lower floor outer wall panel 5 installed in advance and fixing the lower floor outer wall panel 5 to the trunk difference material 6. If it demonstrates concretely, first, the H-shaped steel used as the trunk difference material 6 will be mounted on the lower floor outer wall panel 5. FIG. At this time, as shown in FIG. 7, the front end of the lower flange portion 8 of the H-shaped steel is behind the outer wall material layer 5 a and the ventilation layer 5 b of the lower floor outer wall panel 5 (in other words, the room of the building 1 The H-shaped steel is placed on the lower floor outer wall panel 5 so as to be located on the inner side. Thereafter, a bolt Bo is inserted from above the bolt hole Bh formed in the front portion 8a of the lower flange portion 8 of the H-shaped steel, and the lower floor outer wall panel 5 is attached to the H-shaped steel (specifically, the H-shaped steel Bolt the lower flange 8).
In the present embodiment, the nut that fits the bolt Bo that fixes the lower floor outer wall panel 5 to the H-shaped steel is fixed to the lower floor outer wall panel 5 at a location where the bolt hole Bh is formed by welding. Yes.

<Step S002 for Inserting Bo Bo for Fixing Upper Floor Outer Wall Panel 4 into Bolt Hole Bh>
This step S002 is a step of inserting the bolt Bo into the bolt hole Bh formed in the upper end portion of the trunk difference member 6 (specifically, the front side portion 7a of the upper flange portion 7 of H-shaped steel). In the present embodiment, the bolt Bo is inserted from below the bolt hole Bh, and the head of the bolt Bo is positioned on the lower side as shown in FIG. This work is performed by the operator reaching from the rear side of the H-shaped steel (that is, the indoor side of the building 1) to the front side of the H-shaped steel (that is, the outside of the building 1). That is, the work in this step S002 can be performed not from the outside of the building 1 but from the inside.

<Process S003 for Installing Support Member 20>
This step S003 is a step of installing the above-described support member 20 at a predetermined position in order to hold the bolt Bo inserted into the bolt hole Bh in the previous step S002 in this state. Here, the predetermined position where the support member 20 is installed is a position that is located substantially directly below the bolt Bo between the upper flange portion 7 and the lower flange portion 8 of the H-shaped steel that is the trunk member 6.

  More specifically, the support member 20 is placed on the upper flange portion 7 and the lower side so that the receiving portion 21c of the bolt holding mechanism 21 faces the head of the bolt Bo set in the bolt hole Bh of the upper flange portion 7. It arrange | positions between the flange parts 8. FIG. At this time, the two side portions 22c provided in the standing portion 22b of the long body 22 sandwich the above-described lower nut therebetween.

  And after installing the support member 20 in the above-mentioned position, the screw part 21a and the locking nut 21b of the bolt holding mechanism 21 are operated. As a result of adjusting the protruding amount of the screw portion 21a by this operation, the position of the receiving portion 21c located at the top of the support member 20 is changed, so that the receiving portion 21c finally holds the head of the bolt Bo. become.

  As for the work in this step S003, as in the previous step S002, the operator hands from the rear side of the H-shaped steel (that is, the indoor side of the building 1) to the front side of the H-shaped steel (that is, the outside of the building 1). This is done by stretching.

  In this embodiment, after the bolt Bo is inserted into the bolt hole Bh, the support member 20 is installed and the support member 20 is supported by the bolt Bo. However, the present invention is not limited to this. That is, after the support member 20 is installed in a predetermined position in advance, the bolt Bo may be inserted into the bolt hole Bh so that the bolt Bo is supported by the support member 20.

<Step S004 for attaching waterproof mechanism 9 and heat insulating member 14>
In this step S004, while the bolt Bo is held in the state of being inserted into the bolt hole Bh by the support member 20, the waterproof mechanism 9 is attached to the front position of the trunk member 6 and the above-described heat insulating member 14 is attached to the predetermined part. It is a process of installing at a position. By this step S004, the waterproof mechanism 9 is put on the upper end portion of the lower floor outer wall panel 5 in the vertical direction. On the other hand, the heat insulating member 14 is installed on the above-described heat insulating member installation surface among the outer surfaces of the second water draining plate 11, and finally the upper end portion of the body surface material 12 and the second water draining plate 11. It is accommodated in an empty space formed between them.

  And this process S004 is implemented by the procedure shown in FIG. FIG. 16 is a diagram showing the procedure of step S004 for attaching the waterproof mechanism 9 and the heat insulating member 14. As shown in FIG. 16, this step S 004 includes a first attachment step S 011 for attaching the first draining plate 10, a second attachment step S 012 for attaching the second draining plate 11, and the second heat insulating member 14. There are a step S014 for installing on the heat insulating member installation surface of the water draining plate 11 and a third attachment step S015 for attaching the body surface material 12.

  Further, as shown in FIG. 16, this step S 004 includes a first pasting step S 013 for pasting the first elastic rubber 16 to a predetermined portion of the outer surface of the second draining plate 11, and the trunk surface material 12. And a second attaching step S016 for attaching the second elastic rubber 17 to the upper end surface.

  In addition, as for the work in each step S011 to S016 in this step S004, as shown in FIG. 17, the worker moves from the rear side of the H-shaped steel (that is, the indoor side of the building 1) to the front side (the building 1 Done by reaching out (outside). FIG. 17 is a schematic diagram showing a state of work for attaching the waterproof mechanism 9.

  Hereinafter, each process S011-S016 in this process S004 is demonstrated.

<First mounting step S011>
In this step S011, the first draining plate 10 is attached so that the first draining plate 10 covers the H-shaped steel at the front position of the H-shaped steel to be the trunk difference material 6. Specifically, the horizontal portion 10a of the first draining plate 10 is placed on the upper flange portion 7, and the intersecting portion 10b is positioned at the front position of the H-shaped steel. At this time, the lower end portion of the intersecting portion 10b comes to the upper end portion of the lower floor outer wall panel 5 as shown in FIG. Under this condition, the first draining plate 10 is screwed to a predetermined fixing portion. Here, the member to which the first draining plate 10 is fixed by screwing is a member (for example, the lower floor outer wall panel 5 or the support member 20) provided adjacent to the first draining plate 10.

  In addition, at the stage where the first draining plate 10 is screwed to a predetermined fixing portion, the intersecting portion 10b of the first draining plate 10 is bent at a midway position in the extending direction, and there is a step at the position. D1 is formed. Then, the first draining plate 10 is attached so that the portion located on the lower side when viewed from the step D1 is located at the front position of the portion located on the upper side when viewed from the step D1.

  Furthermore, in the surface located on the front side (outer side) of the outer surfaces of the intersecting portion 10b, a substantially L-shaped angle 10c is formed at a position slightly elevated from the step D1, and penetrates the paper surface in FIG. And screw at regular intervals. Further, on the same surface as the surface on which the angle 10c is fixed, a substantially rectangular wave-shaped metal piece 10d is placed at a certain distance along the direction penetrating the paper surface in FIG. Secure with screws. In addition, the screwing of the angle 10c and the metal piece 10d may be performed in advance before attaching the first draining plate 10 to a predetermined fixing portion.

<Second mounting step S012>
In this step S012, the second draining plate 11 is positioned in front of the first draining plate 10, and the second draining plate 11 is attached to a predetermined fixing portion. At this time, the second draining plate 11 is attached so that the lower end portion of the second draining plate 11 is positioned in front of the upper end portion of the lower floor outer wall panel 5 and covers the upper end portion.

  If it demonstrates in detail, about the 2nd draining board 11 before attachment, the upper end part will be bent at a substantially right angle for every fixed interval along the direction which penetrates a paper surface in FIG. Moreover, in the 2nd draining board 11 before attachment, the level | step differences D2 and D3 are formed by bending several times in the middle position in the extension direction.

  The second draining plate 11 in such a state is positioned at the front position of the first draining plate 10 and then attached along the first draining plate 10. More specifically, after engaging the portion bent at a substantially right angle among the upper end portion of the second draining plate 11 with the substantially L-shaped angle 10c screwed to the first draining plate 10. Then, screws are attached to the angle 10c. Further, the central portion in the extending direction of the second draining plate 11 is screwed to a substantially rectangular wave-shaped metal piece 10 d screwed to the first draining plate 10.

  By the above operation, the second draining plate 11 comes along the first draining plate 10 at a position in front of the first draining plate 10. In such a state, the upper step D2 formed on the second draining plate 11 is positioned substantially at the same position as the step D1 formed on the first draining plate 10 in the vertical direction (see FIG. 10). ). Further, a space S is provided between the second draining plate 11 and the first draining plate 10. In the present embodiment, the space S communicates with the ventilation layer 5b of the lower floor outer wall panel 5. In other words, in the second attachment step S012, a space S is provided between the second draining plate 11 and the first draining plate 10, and the space S and the ventilation layer 5b included in the lower floor outer wall panel 5 are provided. The second draining plate 11 is attached so as to communicate.

  Furthermore, when the installation of the second draining plate 11 is completed, the lower step D3 formed on the second draining plate 11 is the upper end of the lower floor outer wall panel 5 (more specifically, the outer wall material layer 5a). It comes to be located in a slightly upper position. And the part located in the lower side seeing from the lower level | step difference D3 among the 2nd draining plates 11 comes to be located in the front position of the lower floor outer wall panel 5. FIG. That is, in the present embodiment, the second draining plate 11 is attached so that the lower end portion of the second draining plate 11 and the upper end portion of the lower-floor outer wall panel 5 are positioned in the vertical direction.

In the present embodiment, in order to enhance the waterproof function, the second draining plate 11 is stopped in the gap formed between the portion located near the lower step D3 and the lower floor outer wall panel 5. EPT (Ethylene-Propylene as water material)
(Terpolymer) is provided. More specifically, as shown in FIG. 9, the EPT is pasted on the upper end surface of the outer wall material layer 5 a of the lower floor outer wall panel 5 in advance when the second draining plate 11 is attached. Similarly, EPT is affixed also to the part which comes to oppose the lower end part of the 2nd draining board 11 among the outer surfaces of the outer wall material layer 5a of the lower floor outer wall panel 5 (refer FIG. 10). Thereafter, when the second draining plate 11 is attached, each EPT is pressed against the second draining plate 11 to be elastically deformed, and the gap is sealed (see FIG. 10).

<First sticking step S013>
In this step S013, when the upper floor outer wall panel 4 is installed later, the first water stop material is sealed in order to seal the gap formed between the upper floor outer wall panel 4 and the second draining plate 11. The elastic rubber 16 is affixed to a predetermined part of the second draining plate 11 in advance. Here, as shown in FIG. 10, the first elastic rubber 16 is attached to the upper end portion of the surface located on the front side (outer side) of the outer surface of the second draining plate 11. In addition, as a material of the 1st elastic rubber 16, the above-mentioned EPT is suitable.

<Process S014 for installing heat insulating member 14>
In this step S014, prior to the attachment of the body surface material 12 (that is, the third attachment step S015), the heat insulating member 14 made of glass wool board is installed on the heat insulating member installation surface provided in the second draining plate 11. To do. Here, as described above, the heat insulating member 14 has a thickness corresponding to the height of the upper step D2 formed on the second draining plate 11, and as shown in FIG. It installs in the said heat insulation member installation surface in the adjacent form. In addition, as a means for installing (attaching) the heat insulating member 14 on the heat insulating member installation surface, for example, a double-sided tape is suitable.

<Third mounting step S015>
In this process S015, the trunk | drum surface material 12 is attached to the front position of the 2nd draining board 11 and the heat insulation member 14. In FIG. In the present embodiment, a base 13 made of a metal plate is attached to the back surface of the body surface material 12, and the body surface material 12 is fixed to the second draining plate 11 via the base 13 as shown in FIG. 12. To do.

  In addition, as shown in FIG. 12, the trunk | drum surface material 12 attached to the predetermined position is a part ranging from the upper level | step difference D2 to the lower level | step difference D3 among the 2nd draining plates 11, and the said heat insulation member 14. It comes to cover. On the other hand, as shown in FIG. 12, the upper end portion of the base 13 attached to the back surface of the body surface material 12 goes around the upper end of the heat insulating member 14, and is finally screwed to the second draining plate 11.

  Moreover, in this embodiment, in order to seal the space | gap formed between the trunk | drum surface material 12 (more specifically, the base 13 attached to the back surface of the trunk | drum surface material 12) and the 2nd draining board 11. The EPT as a water stop material is attached to a predetermined portion of the second draining plate 11 before the body surface material 12 is attached. Here, the predetermined part to which the EPT is attached is, for example, a part of the second draining plate 11 that is located at an intermediate position between the upper step D2 and the lower step D3.

  Furthermore, after attaching a plurality of body surface materials 12 along the outer periphery of the building 1, by inserting gaskets 15 into joints (joints) between the body surface materials 12, The process for preventing water from entering is performed (see FIG. 13).

<Second sticking step S016>
In this step S016, the upper floor outer wall panel 4 is formed between the upper floor outer wall panel 4 and the trunk surface material 12 when the upper floor outer wall panel 4 is subsequently placed on the H-shaped steel as the trunk surface material 12 and the trunk difference material 6. A second elastic rubber 17 as a water stop material is attached to a predetermined portion of the body surface material 12 in order to seal the gap. Here, as a part to which the second elastic rubber 17 is pasted, as shown in FIG. Note that the above-mentioned EPT is suitable as the material of the second elastic rubber 17.

<Step S005 of placing and fixing the upper-floor outer wall panel 4 on the trunk difference member 6>
In this step S005, after the waterproof mechanism 9 and the heat insulating member 14 are attached, the upper floor outer wall panel 4 is placed on the H-shaped steel serving as the waterproof mechanism 9 and the trunk difference member 6, and then the upper floor outer wall panel 4 is This is a step of fixing to the differential member 6. In this step S005, the upper floor outer wall panel 4 and the H-shaped steel are fastened by using the bolt Bo that is held by the support member 20 while being inserted into the bolt hole Bh. That is, until the fastening between the upper floor outer wall panel 4 and the H-shaped steel is completed, the support member 20 holds the bolt Bo for fixing the upper floor outer wall panel 4 to the H-shaped steel in the bolt hole Bh. Will continue to do.

  Here, when the upper floor outer wall panel 4 is placed on the H-shaped steel, the bolt insertion hole provided in the upper floor outer wall panel 4 for inserting the bolt Bo is positioned above the bolt Bo. Thus, the upper floor outer wall panel 4 is lifted. In this process, first, the upper floor outer wall panel 4 is transported to a position where the lower end thereof faces the first elastic rubber 16 described above. Then, the upper floor outer wall panel 4 is pulled back (inside the room) while the lower end portion of the upper floor outer wall panel 4 and the first elastic rubber 16 face each other (see FIG. 14). At this time, the lower end portion of the upper floor outer wall panel 4 presses the first elastic rubber 16, and the first elastic rubber 16 is elastically deformed. As a result, the upper floor outer wall panel 4 is in close contact with the second draining plate 11 via the first elastic rubber 16, and the gap formed between the upper floor outer wall panel 4 and the second draining plate 11 is sealed. Will come to be.

  Then, when the bolt insertion hole of the upper floor outer wall panel 4 reaches the position above the bolt Bo, the upper floor outer wall panel 4 is lowered and finally placed on the waterproof mechanism 9 and the H-shaped steel. As a result, the bolt Bo is inserted into the bolt insertion hole of the upper floor outer wall panel 4. At this time, the lower end portion of the upper-floor outer wall panel 4 (specifically, the outer wall material layer 4a) approaches the above-described second elastic rubber 17 from above and eventually presses the second elastic rubber 17. (See FIG. 15). As a result, the upper floor outer wall panel 4 is in close contact with the body surface material 12 via the second elastic rubber 17 so that the gap formed between the upper floor outer wall panel 4 and the body surface material 12 is sealed. Become.

  Through the above-described operation, the upper floor outer wall panel 4 is placed on the H-shaped steel serving as the trunk difference material 6. Then, a gap is formed between the upper floor outer wall panel 4 and the lower floor outer wall panel 5, and the gap is closed by the waterproof mechanism 9. In other words, in the previous step S004, the waterproof mechanism 9 is attached so that the waterproof mechanism 9 closes the gap when the upper floor outer wall panel 4 is placed on the H-shaped steel. Then, the upper floor outer wall panel 4 placed on the waterproof mechanism 9 and the H-shaped steel is fixed to the H-shaped steel (more specifically, the upper flange portion of the H-shaped steel by the bolt Bo inserted into the bolt hole Bh. 7 is fixed to the front portion 7a).

  In the present embodiment, the upper floor outer wall panel 4 is placed on the H-shaped steel so that the outer wall material layer 4a and the ventilation layer 4b of the upper floor outer wall panel 4 are located outside the front end of the upper flange portion 7 of the H-shaped steel. Place. Furthermore, in the present embodiment, the upper floor outer wall panel 4 is arranged so that the ventilation layer 4b of the upper floor outer wall panel 4 communicates with the space S provided between the first draining plate 10 and the second draining plate 11. Is placed on the waterproof mechanism 9 and the H-shaped steel. Thereby, the ventilation layers 4b and 5b of the upper floor outer wall panel 4 and the lower floor outer wall panel 5 effectively exert a function of preventing the dew condensation in the outer wall panel by promoting the ventilation in the ventilation layers 4b and 5b, respectively. It becomes like this.

  In this embodiment, when a nut is fitted to the bolt Bo that fixes the upper floor outer wall panel 4 to the H-shaped steel, an opening (not shown) for attaching the nut is provided on the indoor side of the upper floor outer wall panel 4. Thus, it is possible to easily fit the nut to the bolt Bo on the work floor formed inside the building 1 (for example, the second floor formed on the trunk difference member 6).

  By completing steps S001 to S005 described so far, in the construction of the building 1, the installation of the upper floor outer wall panel 4 and the lower floor outer wall panel 5, and the waterproof treatment and heat insulation treatment in the vicinity of the trunk difference member 6 Is completed. Thereafter, when the construction of other construction materials and the interior work are completed, the construction of the building 1 is completed and the building 1 is completed.

<< About the effectiveness of the building method of the building 1 which concerns on this embodiment >>
In the building method of the building 1 according to this embodiment, prior to the installation of the upper floor outer wall panel 4, a bolt Bo for fixing the upper floor outer wall panel 4 to the trunk difference material 6 is provided at the upper end portion of the trunk difference material 6. It is inserted into the formed set hole Bh and held in this state. The waterproof mechanism 9 is attached to the front position of the trunk difference member 6 while the bolt Bo is held in the state of being inserted into the set hole Bh. Thereafter, the upper floor outer wall panel 4 is placed on the waterproof mechanism 9 and the trunk difference member 6, and the upper floor outer wall panel 4 is fixed to the trunk difference member 6 by the bolt Bo inserted in the bolt hole Bh. Thereby, an easier building construction method is realized, and the construction quality can be stabilized regardless of the skill of the operator.

  That is, as explained in the section of the problem to be solved by the invention, the conventional construction method is as shown in FIG. 18, after the upper floor outer wall panel 4 is placed on the trunk difference member 6, and then the upper floor outer wall. The fixing work of the panel 4 and the trunk difference member 6 and the attaching work of the waterproof mechanism 9 have been forced to be performed. Therefore, it is necessary to perform the above work from the outside of the building, such as a densely populated house, the building to be constructed is adjacent to the adjacent building, and the work space (for example, work In an environment where it is difficult to secure a scaffolding space), it has been difficult to perform the above work. FIG. 18 is a diagram showing a flow of a conventional building construction method.

  More specifically, the bolt Bo falls off only by inserting the bolt Bo for fixing the upper floor outer wall panel 4 to the trunk difference member 6 into the bolt hole Bh. For this reason, in the conventional construction method, firstly, the upper floor outer wall panel 4 is placed on the H-shaped steel as the trunk difference member 6, and then the bolt Bo is inserted into the bolt hole Bh. The upper floor outer wall panel 4 was fixed to the H-shaped steel. However, when the bolt hole Bh is formed in the front portion 7a of the upper flange portion 7 of the H-shaped steel, after the upper floor outer wall panel 4 is placed on the trunk difference member 6, the inner side (the indoor side of the building) ) From reaching the position where the bolt hole Bh is formed.

  Further, conventionally, after the upper floor outer wall panel 4 is placed on the H-shaped steel serving as the trunk difference member 6, the above-described waterproof mechanism 9 is provided with a gap between the upper floor outer wall panel 4 and the lower floor outer wall panel 5. It was supposed to be installed at a position to block. Furthermore, the heat insulating member installed in the vicinity of the trunk difference material 6 was also installed after the upper floor outer wall panel 4 was placed on the H-shaped steel to be the trunk difference material 6. For this reason, conventionally, since it has been difficult to perform the installation work of the waterproof mechanism 9 and the heat insulating member 14 from the inside (the indoor side of the building), the above work is performed after a work scaffold is installed outside the building. Had to be done from outside the building.

  When the above work is performed outside the building, in an environment where the building to be constructed is close to an existing building adjacent to the building, such as a densely populated house, sufficient work must be performed outside the building. As a result of not being able to secure a space, it is difficult to perform the above work, and the construction quality depends on the skill of the operator.

  On the other hand, in the present embodiment, the upper floor outer wall panel 4 is placed on the H-shaped steel serving as the trunk difference member 6 while holding the bolt Bo inserted in the bolt hole Bh. The H-shaped steel and the upper floor outer wall panel 4 are fixed. Thereby, it becomes unnecessary to perform the fixing work of the trunk difference member 6 and the upper floor outer wall panel 4 outside the building 1.

  More specifically, after inserting the bolt Bo into the bolt hole Bh formed in the front portion 7a of the upper flange portion 7 of the H-shaped steel, the front portion 7a of the upper flange portion 7 and the front portion of the lower flange 8 Between 8a, the support member 20 which supports in the state which inserted said volt | bolt Bo in the bolt hole Bh is installed.

  In the bolt holding mechanism 21 provided in the support member 20, the screw portion 21a and the locking nut 21b are operated to adjust the protruding amount of the screw portion 21a. As a result, the screw portion 21a is joined to the tip of the screw portion 21a. The receiving part 21c comes to grip the head of the bolt Bo. Thus, prior to placing the upper floor outer wall panel 4 on the H-shaped steel, the bolt Bo for fixing the upper floor outer wall panel 4 to the H-shaped steel is inserted into the bolt hole Bh, and The bolt Bo can be held as it is. By such an effect, it becomes possible to perform the fixing work of the trunk difference member 6 and the upper floor outer wall panel 4 from the inside of the building 1.

  Further, in the present embodiment, prior to placing the upper floor outer wall panel 4 on the H-shaped steel, the waterproof mechanism 9 and the heat insulating member 14 are attached, which is the same as the case shown in FIG. In addition, the waterproof mechanism 9 and the heat insulating member 14 can be attached at predetermined positions if the operator reaches from the inside of the H-shaped steel. That is, the attachment work can be performed from the inside of the building 1.

  As a result of the above effects, the above work can be performed from the inside of the building 1 even in an environment where it is difficult to secure a space outside the building 1 such as a densely populated house. However, a good building 1 is constructed, and the construction quality is not affected by the skill of the operator.

  In the present embodiment, in order to hold the bolt Bo inserted in the bolt hole Bh, between the upper flange portion 7 and the lower flange portion 8 of the H-shaped steel, at a position below the bolt Bo, The support member 20 having the above-described configuration is installed. Thereby, it is possible to hold the bolt Bo in the above state with a relatively simple configuration. However, the present invention is not limited to this, and any construction method (for example, a construction method using an adhesive or the like) can be used as long as the bolt Bo can be held in the state inserted in the bolt hole Bh. However, if it is said support member 20, the space between the upper side flange part 7 and the lower side flange part 8 can be utilized effectively, and it can be utilized also as a base at the time of attaching the 1st draining board 10. FIG. .

  In the present embodiment, the heat insulating member 14 having a thickness corresponding to the upper step D2 formed on the second draining plate 11 is insulated from the second draining plate 11 before the third attachment step S015. Install on the component installation surface. Then, in the subsequent third attachment step S015, the body surface material 12 is attached to the front positions of the heat insulating member 14 and the second draining plate 11. Thereby, the heat insulation of the trunk | drum difference material 6 vicinity can be aimed at. The heat insulating member 14 may not be attached to the second draining plate 11 (that is, the step of attaching the heat insulating member 14 may be omitted). Is preferred.

<< Other Embodiments >>
In the above embodiment, the construction method of the building 1 of the present invention has been mainly described. However, the above embodiment is for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof. Further, the shape and the like of the members described above are merely examples for exhibiting the effects of the present invention, and do not limit the present invention.

  In particular, in the present embodiment, in order to appropriately waterproof the vicinity of the trunk difference material 6, a plurality of (two in the present embodiment) draining plates are provided to be overlapped at the front position of the trunk difference material 6. It is not limited to this. For example, only the first draining plate 10 may be used, but it is desirable to provide the first draining plate 10 and the second draining plate 11 in order to enhance the waterproof effect near the trunk difference member 6.

  In the present embodiment, each of the outer wall panels 4 and 5 has a multilayer structure and has the ventilation layers 4b and 5b. However, the present invention is not limited to this and does not have the ventilation layers 4b and 5b. The outer wall panels 4 and 5 may be used. However, as described above, by providing the ventilation layers 4b and 5b, moisture brought into the wall can be excluded outdoors. In this respect, the present embodiment is more desirable.

  Further, in the present embodiment, a space S is provided between the first draining plate 10 and the second draining plate 11, and the space S and the ventilation layers 4 b and 5 b of the upper floor outer wall panel 4 and the lower floor outer wall panel 5 are provided. To communicate with each other. That is, in the building method according to the present embodiment, the building 1 is constructed so that the space S and the ventilation layers 4b and 5b communicate with each other. As a result, the ventilation layers 4b and 5b can effectively exhibit their functions.

  Further, in the present embodiment, H-shaped steel is used as the trunk difference material 6, but the present invention is not limited to this, and for example, other shapes of steel materials or materials other than steel materials may be used. However, when H-shaped steel is used as the trunk difference member 6 as in this embodiment, the effect of the present invention is more effectively achieved. That is, when the upper floor outer wall panel 4 is placed on the H-shaped steel to be the trunk difference material 6, after the upper floor outer wall panel 4 is placed on the H-shaped steel, the upper floor outer wall panel 4 is placed on the trunk difference material. When the bolt Bo for fixing to 6 is inserted into the bolt hole Bh and the waterproof mechanism 9 and the heat insulating member 14 are attached, the above-described problem becomes apparent. In such a case, the effect of the present invention is more effective.

  In addition, in said embodiment, the building completed using the said construction method was clarified with the construction method of this invention. That is, both the upper floor outer wall member and the lower floor outer wall member, the trunk member in which each of the both is fixed at a position sandwiched between the both in the vertical direction, and water from the gap between the two (A) after placing the trunk difference material on the lower floor outer wall member and fixing the lower floor outer wall member to the trunk difference material. A fixing member for fixing the upper floor outer wall member to the trunk difference material is inserted into a set hole formed in an upper end portion of the trunk difference material, and (B) the fixing member is inserted into the set hole. The waterproof mechanism is attached to a front position of the waist member while being held in a state of being held. (C) After the waterproof mechanism is attached, the upper floor outer wall member is connected to the waterproof mechanism and the waist member. It is placed on the front by the fixing member inserted in the set hole. Building, characterized in that the upper floor outer wall member fixed to the cylinder difference material are also feasible.

  Further, the building is provided with a support member for supporting the bolt inserted in the set hole, and the support member is located at a position below the bolt so that the trunk difference member is located. It is realizable also about the structure installed between the upper side flange part and lower side flange part of H-shaped steel as.

1 Building, 2 Frame, 3 Roof, 4 Upper floor panel (Upper floor wall member),
4a outer wall material layer, 4b ventilation layer, 4c heat insulation material layer, 4d air space layer,
4e gypsum board layer, 4f spacer, 4g aluminum evaporated film,
4h moisture permeable waterproof sheet, 4i inner layer, 4j outer layer,
5 Lower floor outer wall panel (lower floor outer wall member), 5a outer wall material layer, 5b ventilation layer,
6 trunk difference material, 7 upper flange part, 7a front side part,
8 Lower flange portion, 8a Front portion, 9 Waterproof mechanism, 10 First draining plate,
10a horizontal part, 10b crossing part, 10c angle, 10d metal piece,
11 Second drainage plate, 12 trunk surface material (decorative surface material), 13 base, 14 heat insulating member,
15 gasket, 16 first elastic rubber, 17 second elastic rubber,
20 support member, 21 bolt holding mechanism, 21a screw part, 21b locking nut,
21c receiving part, 21d bottom plate, 21e claw part,
22 long body, 22a flat part, 22b standing part, 22c side part,
D1, D2, D3 steps, Bh bolt holes (set holes), Bo bolts,
H Adjacent building, S space

Claims (7)

A building construction method having both an upper floor outer wall member and a lower floor outer wall member, and a trunk member to which each of the two is fixed at a position sandwiched between both in the vertical direction,
Placing the trunk difference material on the lower floor outer wall member installed in advance and fixing the lower floor outer wall member to the trunk difference material;
Inserting a fixing member for fixing the upper floor outer wall member to the trunk difference material into a set hole formed in an upper end portion of the trunk difference material;
While holding the fixing member inserted in the set hole, a waterproof mechanism for preventing water from entering from the gap between the two in the building is provided at the front position of the trunk member. The process of attaching,
After the waterproof mechanism is attached, the upper floor outer wall member is placed on the waterproof mechanism and the trunk difference member, and the upper floor outer wall member is moved to the trunk by the fixing member inserted into the set hole. Fixing to the difference material;
A building construction method characterized by comprising: The building construction method according to claim 1,
In the step of placing the trunk difference material on the lower floor outer wall member and fixing the lower floor outer wall member to the trunk difference material,
An H-shaped steel as the trunk member is placed on the lower floor outer wall member, and of the lower flange portions provided in the H-shaped steel, the front side of the center position in the width direction of the lower flange portion Bolt the lower floor outer wall member to the part located at
In the step of inserting the fixing member into the set hole,
Of the upper flange portion provided in the H-shaped steel, a bolt as the fixing member is inserted into the set hole formed in a portion located in front of the center position in the width direction of the upper flange portion,
In the step of attaching the waterproof mechanism, the building construction method is characterized in that the waterproof mechanism is attached by reaching from the rear side of the H-shaped steel to the front side of the H-shaped steel. In the building construction method according to claim 2,
In order to hold the bolt inserted in the set hole, a support member for supporting the bolt inserted in the set hole is arranged so that the support member is positioned below the bolt. The building construction method further comprising a step of installing between the upper flange portion and the lower flange portion. In the building construction method according to claim 3,
The step of attaching the waterproof mechanism includes
A first attachment step of attaching a first draining plate covering the H-shaped steel at a front position of the H-shaped steel;
The second drainage plate located at the front position of the first drainage plate is arranged such that the lower end portion of the second drainage plate is located at the forward position of the upper end portion of the lower floor outer wall member and covers the upper end portion. A second attachment step to attach to the
A third attachment step of attaching a decorative face material forming a part of the outer wall between the two in the building to a front position of the second draining plate;
A building construction method characterized by comprising: The building construction method according to claim 4,
When each of the both has a ventilation layer for ventilating air in each thickness direction,
In the second attachment step, a space is provided between the second draining plate and the first draining plate, and the space and the ventilation layer of the lower floor outer wall member communicate with each other. Attach the second draining board to
In the step of placing the upper floor outer wall member on the waterproof mechanism and the H-shaped steel, and fixing the upper floor outer wall member to the H-shaped steel, the space and the ventilation layer of the upper floor outer wall member include: The building construction method according to claim 1, wherein the upper floor outer wall member is placed on the waterproof mechanism and the H-shaped steel so as to communicate with each other. In the building construction method according to claim 5,
The step of attaching the waterproof mechanism includes
Of the outer surface of the second draining plate, a first attaching step of attaching a first elastic rubber to the upper end of the surface located on the front side;
A second sticking step of sticking a second elastic rubber to the upper end face of the decorative face material,
In the step of placing the upper floor outer wall member on the waterproof mechanism and the H-shaped steel and fixing the upper floor outer wall member to the H-shaped steel, the lower end portion of the upper floor outer wall member is the first elastic A building construction method, wherein the upper floor outer wall member is placed on the waterproof mechanism and the H-shaped steel so as to press rubber and the second elastic rubber. In the construction method of the building as described in any one of Claim 5 or Claim 6,
In the second mounting step, the second draining plate that is bent and has a step formed therein, and the portion of the second draining plate that is on the lower side when viewed from the step is the upper side when viewed from the step. Install so that it is located in front of the part in
Before the third mounting step, the heat insulating member having a thickness corresponding to the step is located on the upper side of the second draining plate as viewed from the step, and the outer surface of the portion has Among them, it further has a step of installing on the surface located on the front side,
In the third mounting step, the decorative surface material is mounted at a front position of the heat insulating member and the second draining plate.

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