JP5108596B2 - building - Google Patents

Description

  The present invention relates to a building having an atrium space extending between adjacent upper and lower floors.

  In general, when a building has an atrium space, an upper and lower boundary portion of the atrium space is formed with an atrium opening that communicates the lower floor space and the directly upper floor space. With the atrium space having such an atrium opening, it is possible to raise the ceiling and improve the feeling of opening in the room.

  However, in this case, since the atrium opening is formed, the floor surface of the upper floor is not an integral floor (rigid floor), so the size of the atrium opening that can be set is maintained to maintain the earthquake resistance of the building. Is limited. Therefore, there is a problem that it is not possible to produce a wider feeling of opening by providing a wider space.

Therefore, conventionally, a technique has been proposed in which a reinforcing brace is installed in the blow-off opening (see, for example, Patent Document 1). According to this prior art, a rigid floor can be established even if a blow-through opening is formed by installing a reinforcing brace.
JP-A-6-73794

  However, in the above prior art, even if it becomes possible to set a wider blow-by space by installing the reinforcement brace, the reinforcement brace is always present in the blow-off opening. For this reason, although the blow-off space is set wider, there is a new problem that the open feeling is disturbed by the presence of the reinforcing brace.

  Therefore, even in the case where a relatively wide atrium space is set, the present invention secures a feeling of opening as the atrium space, and in an emergency, establishes a rigid floor at the atrium opening to provide sufficient seismic resistance. The main purpose is to provide a building where performance can be obtained.

  The present invention employs the following means in order to solve the above problems.

  That is, the first invention is a space spanning adjacent upper and lower floors, and a blow-off space in which a blow-off opening communicating the lower-floor space and the upper-floor space is formed at the boundary between the upper and lower floors, and the blow-off opening The building is provided with an opening reinforcing means that is arranged in a peripheral region of the section and appears at the atrium opening when the building vibrates due to an earthquake or the like and reinforces the atrium opening.

  According to the first aspect of the present invention, in a normal case where the building is not vibrating, the opening reinforcing means is in a non-reinforcing state and is disposed in the peripheral region of the blow-off opening. For this reason, unlike the conventional configuration in which the reinforcing means is always present in the blow-off opening, the feeling of opening of the blow-through space is not hindered by the reinforcing means. Only when the building vibrates due to an earthquake or the like, the opening reinforcing means exhibits the opening reinforcing function of appearing in the blow-off opening and establishing a rigid floor. Therefore, even when a relatively wide atrium space is set, sufficient seismic performance can be obtained by establishing a rigid floor in the atrium opening, in an emergency, while ensuring a feeling of opening as the atrium space. .

  Note that it is preferable that the opening reinforcing means appear at the blow-off opening and reinforce the blow-off opening when the vibration exceeds the set level or exceeds the set level. Thereby, when the vibration which does not have the possibility of building collapse has arisen in the building, it can prevent that an opening part reinforcement means appears in a blow-off opening part. Moreover, it is preferable that the opening part reinforcement means is hidden by the wall material etc. which were provided in the peripheral part of the blow-off opening part in the state arrange | positioned in the peripheral region of the said blow-off opening part.

  In the second invention, the opening reinforcing means includes a reinforcing member that is bridged between beam members arranged around the blow-off opening and reinforces the blow-off opening, and the reinforcing member is connected to the blow-off opening. And holding means for expanding the reinforcing member to a reinforced state when the building vibrates and the holding state is released when the building vibrates.

  According to the second aspect of the invention, since the reinforcing member is normally held in the non-reinforcing state by the holding means, the reinforcing member can be arranged in the peripheral region of the blow-through opening. When the building vibrates in an emergency, the holding state is released, and the reinforcing member appears in the blow-off opening and develops into a reinforcing state in which the blow-off opening is reinforced. By configuring the opening reinforcing means with each of such means, the opening reinforcing means can be suitably realized. Further, since the reinforcing member is bridged between the beam members in the reinforcing state by the reinforcing member, the reinforcement by the reinforcing member can be strengthened.

  In addition, it is preferable that a holding means is a means to rapidly expand | deploy from a non-reinforced state to a reinforced state. Thereby, since the development from the non-reinforced state to the reinforced state is performed in a short time, the normal case can be set to the non-reinforced state.

  In a third aspect of the invention, the reinforcing member is a linear member or a belt-like member that becomes a brace that is stretched between the beam members in a tensioned state when the reinforcing member is expanded to a reinforcing state.

  According to the third aspect of the invention, since the reinforcing member is a linear member or a belt-like member, the rewinding or winding operation can be performed. For this reason, the expansion | deployment to the tension | tensile_strength state which winds up the said linear member or strip | belt-shaped member, and becomes bracing from the unstrained state which unwound the linear member or strip | belt-shaped member is easily realizable. In addition, as a linear member, they are a wire, a rope, etc., for example. Moreover, as a strip | belt-shaped member, it is a belt etc., for example.

  According to a fourth aspect of the present invention, a storage portion for storing the linear member or the strip-shaped member in an unreinforced state is installed at a peripheral portion of the blow-off opening, and the storage portion has the wire in the expanded state in the reinforced state. The shape member or the belt-shaped member has a passage opening that passes toward the blow-out opening.

  According to the fourth aspect of the invention, the non-reinforcing linear member or belt-like member is accommodated in the accommodating portion installed in the peripheral portion of the blow-off opening, and passes through the passage opening of the accommodating portion and is in the reinforced state. Be expanded. In this regard, for example, if the linear member or the belt-like member is configured to expand into the reinforced state by breaking through the wall material or the like, the wall material or the like needs to be replaced thereafter. On the other hand, if it accommodates in the accommodating part which has a passage opening like this invention, replacement | exchange of wall materials etc. will become unnecessary. And since it is normally stored in the storage part and is hidden from the blow-off opening, the design of the blow-off space can be improved.

  In a fifth aspect of the invention, the holding means includes a winding member that can wind up the linear member or the belt-shaped member with an urging force, and holds the coiled member in a state of being unwound from the winding member against the urging force. Thus, the linear member or the strip-shaped member is held in an unreinforced state, and the linear member or the strip-shaped member is expanded into the reinforced state by being wound by an urging force.

  According to the fifth aspect of the present invention, in a normal case, the linear member or the belt-like member is held in a non-reinforcing state by being held in a state where it is rewound against the urging force from the winding member. And in the case of an emergency, if the holding state is cancelled | released, a linear member or a strip | belt-shaped member will expand | deploy to a reinforcement state by being wound up by the winding member by urging | biasing force. In this way, since the linear member is wound into the reinforcing state by using the urging force, the linear member or the belt-like member can be rapidly expanded to the reinforcing state rather than being wound by a motor or the like. it can.

  In 6th invention, the said holding means was installed in the position concealed from the said blow-off space side with the inner wall material provided in the peripheral part of the said blow-off opening part.

  According to the sixth aspect of the present invention, since the holding means is installed at a position hidden from the side of the blow-off space by the inner wall material provided at the peripheral portion of the blow-off opening, the feeling of opening of the blow-off space can be further enhanced. it can. In addition, the design of the atrium space can be improved.

  In 7th invention, the said holding means was fixed to the beam material arrange | positioned around the said blow-off opening part.

  According to the seventh aspect, since the holding means is installed on the beam member, sufficient strength can be ensured when the blow-off opening is reinforced by the reinforcing member in an emergency.

  In an eighth aspect of the present invention, the opening is formed in at least one of a floor beam of an upper floor unit and a ceiling beam of a lower floor unit, which is a unit building configured by combining a plurality of building units. It is assumed that a reinforcing means is attached.

  According to the eighth aspect of the present invention, the opening reinforcing means is attached to at least one of the floor beam of the upper floor unit or the ceiling beam of the lower floor unit. It can be attached in advance. Thereby, the ease of on-site workability which is the merit of the unit building comprised combining a building unit is not impaired.

  According to a ninth aspect of the present invention, the apparatus includes a vibration detection unit that detects a vibration of a building, a release unit that releases the holding state of the holding unit, and a control unit that controls the release unit. The release means is controlled based on detection information from the detection means.

  According to the ninth aspect of the invention, the release means is controlled based on the detection information from the vibration detection means for detecting the vibration of the building, whereby the reinforcing member appears in the opening to reinforce the blow-off opening. Be expanded. In this case, it is possible to accurately grasp the state in which the building vibrates by the vibration detection means, and it is possible to accurately perform the deployment operation to the state in which the blow-off opening is reinforced by the reinforcing member. In addition, as a vibration detection means, it is also possible to detect a vibration by detecting an acceleration.

[First embodiment]
The first embodiment will be described below with reference to the drawings. In this Embodiment, it is actualized to the two-story building constructed | assembled by the steel frame construction method.

  First, an overview of the entire two-story building will be described with reference to FIG. FIG. 3 is a schematic longitudinal sectional view showing the building of the first embodiment. As shown in FIG. 3, the two-story building 10 includes a two-story building main body 11 and a roof 12 disposed above the building main body 11. The building body 11 has a first floor portion 21 and a second floor portion 22, and the first floor portion 21 and the second floor portion 22 are partitioned by a boundary portion 23. In addition, the boundary part 23 is comprised by each member in between the 1st floor ceiling surface and the 2nd floor surface. Further, in the building 10, a part of the boundary portion 23 is removed to form a blow-off opening 24 that connects the first-floor space and the second-floor space, and a space extending up and down through the blow-off opening 24 is formed. The atrium space 25 is formed.

  Next, the frame structure of the building 10 will be described. The two-story building 10 is formed by combining a large number of column members and beam members (ceiling beams, floor beams, etc.). Further, reinforcing materials such as lattice columns and horizontal braces are provided between the column members and between the beam members as necessary, and the seismic performance of the frame is enhanced.

  FIG. 1 shows a plan view of the floor beam in the second floor portion 22 of the housing formed in this way. In FIG. 1, (a) shows a normal case, and (b) shows an emergency case in which the building 10 has a vibration exceeding a preset vibration level due to an earthquake or the like. Among these, as for (b) in an emergency, as will be described later, first refer to FIG. 1 (a) showing a normal time.

  In FIG. 1A, the first floor beam 31 arranged along the outer wall portion of the building 10 and a plurality of regions formed by the first floor beam 31 having a quadrangular shape in plan view (four in FIG. 1). And a second floor beam 36 that is divided into the area of (2). Both the first floor beam 31 and the second floor beam 36 are made of I-shaped steel or H-shaped steel and are connected to each other. One of the sections A partitioned by the second floor beam 36 is a section in which the blow-through opening 24 is formed, and a relatively large area is secured. In each of the other sections B to D, a pair of horizontal braces 37 are bridged between the floor beams 31 and 36 so as to cross each other. In each of these sections B to D, a floor material (not shown) is installed on the floor beams 31 and 36, and the horizontal brace 37 is hidden by the floor material.

  Here, in the section A where the blow-through opening 24 is formed, a first reinforcement device 51 and a second reinforcement device 52 as opening reinforcement means are respectively installed in the peripheral region of the blow-through opening 24. Since both the reinforcing devices 51 and 52 are installed in the peripheral region of the blow-through opening 24, the feeling of opening of the blow-through space 25 through the blow-off opening 24 is not hindered in a normal case. However, in the case of an emergency in which vibration exceeding a preset vibration level occurs in the building 10 due to an earthquake or the like, it appears in the atrium opening 24 and reinforces the opening 24. Therefore, the first reinforcing device 51 and the second reinforcing device 52 will be described in detail next.

  Both the first reinforcing device 51 and the second reinforcing device 52 are wire braces 61 and 66 as reinforcing members or linear members, and a winding device that winds or unwinds the wire braces 61 and 66. 62, 67. The difference between the two is the arrangement of the wire braces 61 and 66 and the winding devices 62 and 67. For this reason, the first reinforcing device 51 will be described in detail first, and the second reinforcing device 52 will be described with a different arrangement configuration.

  A detailed description of the first reinforcing device 51 will be given with reference to FIG. 2 is a cross-sectional view taken along the line XX in FIG. 1 (a), and shows a vertical cross section of an outer wall section that partitions the interior and the exterior. The structure of the outer wall portion 41 as a premise will be described. The outer wall portion 41 has a structure in which an inner wall material 42, a heat insulating material 43, and an exterior panel 44 are combined. The inner wall material 42 is composed of a base material such as gypsum board and a finishing material such as cloth, and is installed on the indoor side (the blow-off opening 24) side of the first floor beam 31. The heat insulating material 43 is installed on the outdoor side of the inner wall material 42 so as to fill a region surrounded by the first floor beam 31 and a pillar material (not shown). The exterior panel 44 includes a base frame 45 made of a light steel frame material and an exterior material 46 such as siding supported by the base frame 45, and is installed on the outdoor side of the first floor beam 31.

  The above is the general structure which the outer wall part 41 has. In addition, in the present embodiment, the inner wall member 42 is vertically divided across the entire periphery of the blow-off opening 24 at the height position where the first floor beam 31 is installed. In the portion where the inner wall member 42 is divided, there is formed a gap 47 that communicates the indoor side groove (the groove formed by the web 32 and the flange 33) of the first floor beam 31 and the indoor (blow-off opening 24). Yes. A brace rail 48 is installed over the entire gap 47, and the blow-out opening 24 is surrounded by an annular brace rail 48. The brace rail 48 has a wire brace storage portion 49, and the storage portion 49 is installed in the indoor side groove of the first floor beam 31 by being inserted into the gap 47 from the indoor side. The wire brace storage part 49 has a passage opening 49 a that opens toward the indoor side, and the stored wire brace 61 can pass through the passage opening 49 a and appear in the blow-off opening 24.

  On the premise of the structure of the outer wall portion 41, the winding device 62 included in the first reinforcing device 51 is connected to one of the connecting portions of the first floor beam 31 and the second floor beam 36 in the section A. The vicinity of the site is the installation location (see FIG. 1 (a)). And the winding device 62 is installed in the web 32 of the 1st floor beam 31 in that location, and is accommodated in the indoor side groove | channel of the 1st floor beam 31. FIG. The winding device 62 includes a winding shaft 63 to which one end of the wire brace 61 is connected. A biasing force is applied to the winding shaft 63 in the winding direction of the wire brace 61 by a biasing member such as a spiral spring (not shown). Further, the winding device 62 includes a stopper (not shown) having a known configuration such as a ratchet mechanism. In a normal case, the wire brace 61 is unwound from the winding shaft against the urging force of the spiral spring, and in this state, the rotation of the winding shaft in the winding direction is restricted by the stopper. The rotation restriction by the stopper can be released, and the release of the restriction is similarly performed by a releasing means installed on the web 32 and a stopper releasing device 64 as a control means.

  This stopper release device 64 can be wired or wirelessly communicated with, for example, an earthquake sensor 65 as vibration detecting means installed on the outer wall surface. The earthquake sensor 65 is a sensor that detects the vibration of the building 10 due to an earthquake or the like. When the vibration of the building 10 is detected by the seismic sensor 65, the stopper releasing device 64 takes up the stopper with the stopper when the information is equal to or higher than a preset vibration level (for example, 95 dB (corresponding to seismic intensity of less than 5)). The rotation restriction of the shaft 63 is released.

  The wire brace 61 in the state of being unwound from the winding shaft 63 is made of steel, and the other end is connected to the second floor beam 36 on the diagonal line of the installation location of the winding device 62 (FIG. 1 (a )reference). The wire brace 61 in the unwound state has a dimension longer than the length obtained by connecting the sections A with diagonal lines. The wire brace 61 pulled out from the take-up shaft 63 is changed to a state extending in the horizontal direction via the direction changing guide member 50 attached to the first floor beam 31, and the wire brace storage portion 49 of the brace rail 48 is changed. It is stored in.

  From the above, each member constituting the first reinforcing device 51, such as the wire brace 61, the winding device 62, the stopper releasing device 64, etc., held in a state of being rewound from the winding shaft 63, is normal. Both are hidden from the side of the blow-off opening (blow-through space).

  Next, about the 2nd reinforcement apparatus 52, the winding apparatus 67 is that the other connection site | part vicinity is an installation location among the connection parts of the 1st floor beam 31 and the 2nd floor beam 36 which are two places in the division A. (See FIG. 1 (a)). Then, one end of the wire brace 66 is connected to the winding shaft of the winding device 67 installed at that location, and the other end is connected to the second floor beam 36 on the diagonal line of the installation location of the winding device 67. (See FIG. 1 (a)). As described above, the arrangement of the wire brace 66 and the winding device 67 is substantially the same as the configuration of the first reinforcing device 51 except that the arrangement configuration is different as described above, and a detailed description thereof will be omitted.

  Then, the aspect of the 1st reinforcement apparatus 51 and the 2nd reinforcement apparatus 52 in an emergency case is demonstrated.

  In an emergency, first, in the winding device 62 of the first reinforcing device 51, the rotation restriction of the winding shaft 63 by the stopper is released by the stopper releasing device 64. For this reason, the wire brace 61 is wound around the winding shaft 63 by the urging force of the spiral spring, and the length thereof is shorter than the normal time described above. As the length of the wire brace 61 is shortened, the wire brace 61 jumps out from the wire brace storage portion 49 through the passage port 49 a and appears in the blow-off opening 24. The same applies to the second reinforcing device 52. Such a state is shown in FIG.

  2B, the wire brace 61 is in a tensioned state (tightly tensioned) between the location where the winding device 62 is installed and the location where the second floor beam 36 on the diagonal line is connected. ). Similarly, in the second reinforcing device 52, the wire brace 66 is in a tensioned state between the location where the winding device 67 is installed and the location where the second floor beam 36 on the diagonal line is connected (pin and pinch). Tensioned state). For this reason, in an emergency, the wire braces 61 and 66 of both the reinforcing devices 51 and 52 intersect with each other at the blow-off opening 24, whereby a rigid floor is formed at the blow-off opening 24.

  Incidentally, when the wire braces 61 and 66 become the above-mentioned braces in an emergency, the following steps are performed. First, based on the detection information from the seismic sensor 65, when the building 10 is vibrated at a level higher than a preset vibration level, the stopper release device 64 of both the reinforcing devices 51 and 52 restricts the rotation of the winding shaft 63 by the stopper. To release. Then, the winding shaft 63 rotates in the winding direction by the accumulated urging force, and the wire braces 61 and 66 are rapidly wound. By this winding, both wire braces 61 and 66 appear in the blow-out opening 24 and become braces that cross each other.

  In addition, if it demonstrates from the above description, the wire braces 61 and 66 are hold | maintained in the non-reinforcing state (the state which was rewound) by the winding devices 62 and 67 of the 1st reinforcement apparatus 51 and the 2nd reinforcement apparatus 52. . Further, when the rotation restriction of the winding shaft 63 is released and the holding state is released, the winding devices 62 and 67 wind the wire braces 61 and 66 and develop them in a reinforced state. For this reason, in the present embodiment, the winding devices 62 and 67 correspond to the holding means.

As described above, according to the first embodiment, the following advantageous effects can be obtained.
(1) The first reinforcing device 51 and the second reinforcing device 52 are installed in the peripheral region of the blow-through opening 24 in a normal time when the building 10 is not vibrating or the level is lower than the set level even if the building 10 vibrates. Yes. For this reason, unlike the conventional configuration in which a reinforcing brace is always present in the blow-off opening 24, the feeling of opening of the blow-through space 25 is not hindered by both the reinforcing devices 51 and 52. Only when the building 10 vibrates to a set level or more due to an earthquake or the like, the wire braces 61 and 66 of both the reinforcing devices 51 and 52 appear in the blow-off opening 24 and become braces. 24 establishes a rigid floor.

  Therefore, even when a relatively wide ventilating space 25 is set, a sufficient floor is formed in the ventilating opening 24 to ensure sufficient seismic performance while ensuring a sense of opening as the ventilating space 25. Can do.

  (2) The wire braces 61 and 66 that have been unwound from the winding devices 62 and 67 are wound around the winding devices 62 and 67, thereby forming a reinforcing state in which the wire braces 61 and 66 are in a brace. The For this reason, it can be easily changed from the non-reinforced state to the reinforced state. And the fluctuation | variation to the reinforcement state is performed when the wire braces 61 and 66 are wound up by urging | biasing force. For this reason, the deployment operation to the reinforced state is performed more rapidly than the winding by the motor or the like, and if the building 10 is vibrated by an earthquake or the like, the blow-off opening 24 can be reinforced immediately.

  (3) The winding devices 62 and 67 are installed at positions hidden by the inner wall material 42 from the blow-off space side. Further, the wire braces 61 and 66 are also normally stored in the wire brace storage portion 49. For this reason, normally, the 1st reinforcement apparatus 51 and the 2nd reinforcement apparatus 52 are concealed with the inner wall material 42 grade | etc.,. As described above, the reinforcing devices 51 and 52, which are foreign matters for the blow-through space, are normally hidden from the blow-through space 25, so that the feeling of opening of the blow-through space 25 can be further enhanced, and the design is enhanced. You can also

  (4) One ends of the wire braces 61 and 66 are connected to the winding device 62 installed on the first floor beam 31, and the direction changing guide member 50 is also attached to the first floor beam 31. Further, the other ends of the wire braces 61 and 66 are connected to the second floor beam 36. And the floor beams 31 and 36 which comprise a frame structure are ensured sufficient intensity | strength. Therefore, sufficient strength can be ensured when the wire braces 61 and 66 are braces between the floor beams 31 and 36 to reinforce the blow-off opening 24.

  In addition, a reinforcing structure having a triangular shape (truss shape) in plan view formed by connecting the diagonal lines of the section A where the blow-through opening 24 is formed by the wire braces 61 and 66 is formed. According to such a reinforcing structure, a strong reinforcing performance can be obtained.

  (5) The wire braces 61 and 66 are normally stored in the wire brace storage portion 49, and are unfolded in a reinforced state through the passage opening 49a of the wire brace storage portion 49 in an emergency. For this reason, since the wire braces 61 and 66 do not destroy the inner wall material 42 in an emergency, the replacement is not necessary.

  (6) When the vibration of the building 10 is detected by the earthquake sensor 65 and the vibration is above the set level, the stopper release device 64 releases the rotation restriction of the winding shaft 63 by the stopper. Since the seismic sensor 65 can accurately detect the state in which the building 10 vibrates, the expansion operation to the state in which the blow-off opening 24 is reinforced by the reinforcing devices 51 and 52 can be accurately performed.

  In addition, this 1st Embodiment is not limited to the said structure, For example, you may implement with the form shown as another example below.

  (A) In the above-described embodiment, the reinforcing devices 51 and 52 as the opening portion reinforcing means have the winding devices 62 and 67 installed on the first floor beam 31. A configuration may be adopted. As shown to Fig.4 (a), in this reinforcement apparatus of another example, the two wire braces 71 and 72 are provided for every reinforcement apparatus. One end of the first wire brace 71 is connected to the first floor beam 31, and the other end is attached to the winding shaft of the winding device 73. In a normal case, the first wire brace 71 is held in a state of being rewound from the winding shaft. One end of the second wire brace 72 is connected to the main body case of the winding device 73, and the other end is diagonally connected to the second floor beam 36 and the first floor beam 31 to which one end of the first wire brace 71 is connected. It is connected.

  In the normal case, the reinforcing device having such a configuration is in a state where the wire braces 71 and 72 are bent with the winding device 73 as a corner, and is disposed in the peripheral region of the blow-off opening 24. 4B, in an emergency, the first wire brace 71 is wound around the winding device 73, and both the wire braces 71, 72 and the winding device 73 appear in the blow-off opening 24. And become brave. Therefore, even in the configuration of this another example, like the reinforcing devices 51 and 52 of the above-described embodiment, the open feeling of the blow-through space 25 is not hindered at the normal time, but the blow-off opening portion is formed by the two wire braces 71 and 72 which are brazed in an emergency. 24 can function as a rigid floor.

  (B) In the above embodiment, the seismic sensor 65 is used as the vibration detecting means. However, a sensor that detects acceleration, a strain gauge that detects the strain of the floor beams 31 and 36 due to an earthquake, or the like may be used. Good.

  (C) Although the example of application to the two-story building 10 has been described in the above embodiment, it can also be applied to a three-story or more building. When applied to a three-storied or higher building, the atrium space should be a space that spans the adjacent upper and lower floors, and even a space that spans from the first floor part to the top floor part, spans any floor and its directly above floor But you can.

  (D) In the said embodiment, although the wire braces 61 and 66 were used as a linear member, a rope and another member may be sufficient. Further, the reinforcing member wound around the winding devices 62 and 67 may be not only a linear member but also a belt-like member such as a belt.

  (E) In the above embodiment, the wire brace storage 49 that stores the wire braces 61 and 66 is provided with the passage port 49a. However, the passage port 49a may be closed by a closing member. Moreover, you may install the obstruction | occlusion member which fills the clearance gap 47 instead of the brace rail 48. FIG. In short, in order to improve the design and to prevent dust, the blow-out space side in the brace storage area of the blow-out opening 24 may be closed. However, in this case, the wire braces 61 and 66 need to be blocking members that can be easily broken by the wire braces 61 and 66 when deployed to the reinforced state.

  (F) In the above-described embodiment, the application example to the two-story building 10 constructed by the steel frame construction method has been described. However, a unit building composed of a combination of a plurality of building units or a building constructed by a conventional wooden construction method It can also be applied to buildings with other structures.

[Second Embodiment]
The second embodiment will be described below with reference to the drawings. In this 2nd Embodiment, it is actualized to what implements the reinforcement | strengthening at the time of the building unit unit which comprises a unit building. Here, the description of the configuration common to the first embodiment will be omitted, and the description will focus on the feature points in this embodiment.

  In the unit building, a plurality of building units are combined to form a building body. In the unit building of this embodiment, a blow-off opening that connects the first-floor space and the second-floor space is formed at the boundary between adjacent building units in the vertical direction, and a space that extends vertically through the blow-off opening is a blow-off space. It has become. And the top view of the lower floor side building unit is shown in FIG. 5 among the building units of the upper and lower floors in which the blow-through opening is formed in this way. In FIG. 5, (a) shows a normal case, and (b) shows an emergency case. First, refer to FIG. 5 (a) showing the normal time.

  In FIG. 5 (a), the lower floor side building unit 80 has columns 81 arranged at four corners, and four ceiling beams 82, which are beam members, are connected to form a quadrangular shape at the upper end. Yes. Although not shown, four floor beams are connected to the lower end of each column 81, and a rectangular parallelepiped skeleton (frame) is formed by the columns 81, the ceiling beam 82 and the floor beam. A section E for forming a blow-through opening 86 is secured in a region surrounded by the ceiling beams 82, and a plurality of ceiling beams 83 which are beams are provided around the section E.

  Also in this embodiment, the 1st reinforcement apparatus 91 and the 2nd reinforcement apparatus 92 as an opening part reinforcement means which reinforce the blow-off opening part 86 in an emergency are installed. Each reinforcing device 91.92 includes steel wire braces 93 and 94 as reinforcing members or linear members, and winding devices 95 and 96 as holding means. One end of each wire brace 93, 94 is connected to a winding device 95, 96 installed on the ceiling girder 82 in the vicinity of a different one column 81, and the other end is connected to the ceiling in the vicinity of the column 81 on the diagonal line of one end. It is connected to the girder 82. As with the first embodiment, the winding devices 95 and 96 can wind the wire braces 93 and 94 by a biasing force by a biasing member such as a spiral spring.

  In a normal case, the wire braces 93 and 94 have a length longer than the length connecting the diagonal lines, and are arranged in the peripheral region of the opening 86 so as to bypass the blow-out opening 86. In order to maintain such a state of the wire braces 93, 94, the wire braces 93, 94 are temporarily fixed by temporary fixing portions (not shown) provided on the ceiling beam 83. In an emergency, the wire braces 93 and 94 are wound around the winding devices 95 and 96 to shorten the length thereof and are released from the temporarily fixed state by the temporary fixing portion. Thereby, the wire braces 93 and 94 are in a tensioned state between the connecting portions with the ceiling beam 82 as shown in FIG. In this case, the wire braces 93 and 94 are braces that intersect at the blow-through opening 86.

  In addition, although illustration is abbreviate | omitted, the structure in the ceiling girder 82 side of the lower floor side building unit 80 mentioned above is similarly employ | adopted also in the floor girder side of an upper floor side building unit.

  As described above, also in the second embodiment, since the reinforcing devices 91 and 92 are normally installed in the peripheral region of the blow-through opening 86, the feeling of opening of the blow-through space 87 is not hindered by them. On the other hand, in the case of an emergency, the wire braces 93 and 94 are rapidly wound up by the winding devices 95 and 96 and appear at the blow-out opening 86 to form braces that intersect each other. The wire braces 93 and 94 that form the braces serve to make the blow-through opening 86 function as a rigid floor and enhance the seismic performance of the unit building.

  Further, unlike the first embodiment, the emergency reinforcement by the wire braces 93 and 94 is performed in units, so that the workability on the site when installing the first reinforcement device 91 and the second reinforcement device 92 is improved. Excellent. And it becomes possible to attach both the reinforcement apparatuses 91 and 92 beforehand in the stage which manufactures a building unit in a factory, and it is also possible to unitize, and also in this point, it is excellent in site construction property.

  In addition, this 2nd Embodiment is not limited to the said structure, For example, you may implement with the form shown as another example below.

  (A) In the above-described embodiment, the wire braces 93 and 94 are braces of the entire region surrounded by the ceiling beam 82. It is only necessary to reinforce the section E in which the opening 86 is formed. Therefore, as shown in FIG. 6, a configuration in which reinforcing devices 101 and 102 for the section E are installed may be employed. In this case, in FIG. 6A showing the normal time, one end of the wire braces 103 and 104 is connected to the winding devices 105 and 106 installed on the ceiling beam 82 and the other end is connected to the beam 83. . The winding devices 105 and 106 have the same configuration as that of the first embodiment described above. In this configuration, in the case of an emergency shown in FIG. 6B, the wire braces 103 and 104 are wound around the winding devices 105 and 106 and become braces. As a result, the blow-off opening 86 functions as a rigid floor in an emergency, and the seismic performance of the unit building is enhanced.

  (B) In the above embodiment, the reinforcing devices 91 and 92 in which the winding devices 95 and 96 are installed on the ceiling beam 82 are used, but instead, as described in another example (a) of the first embodiment. Moreover, you may employ | adopt the reinforcement apparatus comprised by the two wire braces and the winding device interposed between them.

[Other embodiments]
In any of the above-described embodiments, a building user's fall prevention facility may be added. As a specific example, a configuration in which an opening closing member such as a sheet or a net capable of closing the entire opening area of the blow-off openings 24 and 86 is considered. In this case, it is preferable that the opening region is closed by the opening closing member at the same time as the wire brace is deployed and becomes bracing in an emergency. Thereby, even when the building user is in a posture to fall to the lower floor through the blow-through openings 24 and 86, the building user is received by the opening blocking member, and thus can be prevented from falling to the lower floor.

  Further, as another example, there is a movable member that can fall from the state of standing on the second floor to the blow-off space side on the blow-off space side with respect to the handrail installed at the periphery of the blow-off openings 24 and 86. An installed configuration may be adopted. In this case, as shown in FIG. 7, in a configuration in which a waist wall 112 having a handrail 111 is installed in the periphery of the blow-off opening 24, a part of the waist wall 112 may be used as the movable member 113. Alternatively, a movable member may be installed. Even with such a configuration, the effect of preventing the building user from falling to the lower floor through the vent openings 24 and 86 can be obtained.

In 1st Embodiment, it is a top view which shows the floor beam of the 2nd floor part of a building, (a) shows a normal case, (b) shows an emergency case. It is XX sectional drawing in Fig.1 (a), Comprising: The longitudinal cross-section of the outer wall part which divides indoor and outdoor. The schematic longitudinal cross-sectional view of a two-story building. It is a top view which shows the floor beam of the 2nd floor part provided with the reinforcement apparatus which is another example, (a) shows a normal case, (b) shows an emergency case. In 2nd Embodiment, it is a top view which shows a lower floor side building unit, (a) shows a normal case, (b) shows an emergency case. It is a top view which shows the lower floor side building unit provided with the reinforcement apparatus which is another example, (a) shows a normal case, (b) shows an emergency case. The perspective view which shows the fall prevention facility of the building user which is another example.

Explanation of symbols

  24 ... Blow-through opening, 25 ... Blow-through space, 31 ... First floor beam (beam material), 36 ... Second floor beam (beam material), 42 ... Inner wall material, 49 ... Wire brace housing part, 49a ... Pass-through port, 51, 52 ... Reinforcing device (opening reinforcing means), 61, 66 ... Wire brace (reinforcing member or linear member), 62, 67 ... Winding device (holding means), 63 ... Winding shaft (winding member) , 82 ... Ceiling girder (beam material), 83 ... Ceiling girder (beam material), 86 ... Blow-through opening, 87 ... Blow-through space, 91, 92 ... Reinforcing device (opening reinforcing means), 93, 94 ... Wire brace (Reinforcing member or linear member), 95, 96... Winding device (holding means).

Claims (7)

Columns arranged at four corners, beam members connected to the upper end portions of the columns to form a square frame, and beam members connected to the lower end portions of the columns to form a square frame are formed into a rectangular parallelepiped shape. A unit-type building in which upper and lower floors are formed by combining the formed building units at least vertically,
A space that spans the upper and lower floors, and an aerial space in which an aerial opening that connects the lower floor space and the upper floor space is formed at the boundary between the upper and lower floors, and
An opening reinforcing means that is arranged on the beam material of the building unit that forms the atrium opening, and appears in the atrium opening when the building vibrates due to an earthquake or the like, and reinforces the atrium opening.
Equipped with a,
The atrium opening is formed in a partial area of the building unit in plan view,
The opening reinforcing means includes a reinforcing member made of a linear member or a belt-like member that becomes a brace that is stretched between the beam members in a tensioned state when deployed in a reinforcing state,
One end of the reinforcing member in the length direction is connected to the beam member in the vicinity of a predetermined column among the columns, and the other end is a column that is diagonally opposite to the predetermined column in plan view of the building unit. Connected to the beam in the vicinity,
In a non-reinforcing state, the reinforcing member is disposed without bypassing a space other than the blow-off opening in the rectangular space surrounded by the beam material, and is disposed so as to bypass the blow-off opening. the building, characterized in that is. The beam material is a large beam, and a plurality of small beams are provided in a region other than the blow-through opening in a square frame surrounded by the large beam,
The building according to claim 1, wherein the reinforcing member is temporarily fixed by a temporary fixing portion provided in the small beam so as to maintain a position in the non-reinforcing state . It said opening reinforcing means holds the reinforcing member to the unreinforced state, claim comprising a holding means for building to expand the reinforcing member and its holding state by vibration is released into the reinforcing state 1 Or the building of 2. The holding means is
A winding member capable of winding the reinforcing member by an urging force;
The reinforcing member is held in a non-reinforcing state by holding the winding member in a state of being rewound against a biasing force, and the reinforcing member is expanded to a reinforcing state by being wound by the biasing force. 3. The building according to 3.   The building according to claim 3 or 4, wherein the holding means is installed at a position hidden from the atrium space side by an inner wall material provided at a peripheral portion of the atrium opening. Vibration detection means for detecting the vibration of the building;
Release means for releasing the holding state of the holding means;
Control means for controlling the release means;
With
The building according to any one of claims 3 to 5, wherein the control unit controls the release unit based on detection information from the vibration detection unit. Passing said in a peripheral edge portion of the blow opening, housing part for accommodating the reinforcing member in a non-reinforcing condition is established, the reinforcing member during deployment to reinforcing state in the containing portion toward the blow opening The building of any one of Claims 1 thru | or 6 which has a passage opening to do.

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