JP3716072B2 - Method of combination building, unit composition material and binding material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention connects a necessary number of unit components made of wood in advance to a necessary position, and fixes the periphery of the unit structure so that a plane wall, a floor, a roof, or the like required in a building can be obtained. The present invention relates to a combination building method, unit constituent material and binding material that can be easily constructed.
[0002]
[Prior art]
Ancient buildings with wood as the main material are made-to-order on a case-by-case basis and use a large number of members and complex structures. -It consists of a considerable number of members such as through pillars, studs, braces, etc., and many types of joints are used in the parts where each member contacts or intersects, especially the majority of processing required for construction Is characterized by what has been done at the construction site.
[0003]
The materials and labor required for housing construction with such a structure are extremely enormous, and in order to suppress housing prices due to soaring timber prices and labor costs, in terms of materials, laminated materials, compressed materials, or timber processed from scraps are used. Instead, use metal and synthetic resin products a lot, impart commonality to components as much as possible in terms of structure, shift to in-factory production that can be processed intensively on the processing side, and limit on-site processing to only minimal assembly The prefabrication method has been chosen by most contractors, and the proportion of buildings with traditional structures has been decreasing.
[0004]
This concept was also introduced in buildings that use concrete, and lightweight, aerated concrete with thin reinforcing bars that was produced in the factory in advance and sufficiently cured was used as a material for walls, floors, and roofs. Above this height, although various improvements have been added to the construction method, basically, the conventional construction method is mainly used, and steel-reinforced concrete, steel-framed concrete, and steel frames are used as structural materials.
[0005]
[Problems to be solved by the invention]
When considering the visual or sensory factors such as comfort and softness of appearance as a necessary condition for buildings, wood is a construction material that is superior to concrete in comparison with concrete, but on the other hand, the condition of strength is In order to meet, concrete is an excellent building material and easy to obtain strength, and is widely used to obtain low-rise to high-rise buildings, but timber adds height requirements, such as building walls and floors. When the roof is required to have strength as a skeleton, there remains a problem that cannot be handled by conventional wooden construction techniques.
[0006]
The problem is that wood is a material that varies in strength, as is well known, and the tendency is more pronounced as it is longer. This is not the case when using reinforcing materials that have undergone special treatment such as lamination or compression. Today, when it is difficult to obtain long materials with a certain strength and labor costs have soared, unless it is carefully examined with dry materials, it is naturally a relatively high-rise building that is made of wood and has excellent habitability. If we try to get the price, the price of timber and the labor cost in the construction cost will be negligible.
[0007]
[Means for Solving the Problems]
The present invention uses a processed material laminated or assembled using small-diameter wood or the like made of long and short wood, and a small, standardized rectangular frame material different from the conventional skeleton structure, and Finish the unit component material consisting of a single material, and connect and laminate the component material in at least one direction as a main material and form a plane with an opening at the required place, or combine them into a three-dimensional structure The purpose of this project is to provide a combination building method, unit construction material, and binding material to achieve the required flat surface.
[0008]
The present invention uses a wood having a uniform rectangular cross section in the length direction in a building having wood as a main material and constituting each part of a plane wall, a floor and a roof. From the center of the width, a groove having a required length parallel to the longitudinal direction of the wood is formed, and (B) the wood is cut into a plurality of predetermined lengths to form upper, lower, left and right members, and combined into four sides so that the grooves face the outer surface. Place and reinforce by inserting a brace to form one of the unit components, (C) Two sides facing the groove formed in the top, bottom, left and right members and the groove of the same cross-sectional shape A single material provided in the longitudinal direction is formed as one of the unit component materials, and (D) when forming a plane by combining the square frame material that is the unit component material and the single material, the rectangular frame material A rectangular frame on both sides so as to contact or sandwich one surface of a single material arranged perpendicular to the single material, with the single material arranged on the lower side of the base as a reference (E) Assemble the lower side of the plane, (E) Enlarge the plane while sequentially connecting the rectangular frame material and single material from the end of the plane to the inner direction, and (F) Other planes At the end, the top side of the plane is similarly finished using a single material, and (G) in the process of constructing the plane, an appropriate number of rectangular frame materials are deleted at appropriate locations to form mounting openings such as windows. (H) When connecting and extending the ends of a single material in the longitudinal direction, it is at least 35 to 65 percent of the length of the joining surface with reference to any end of the joining surface of the adjacent rectangular frame members. A position determined by selecting from the range is used as a connection point, and (I) an appropriate adhesive is applied to the joint surface between the square frame member and the single member or the square frame member, and formed on the joint surface. Insert a connecting material into the groove, and preferably fix it by appropriate fastening means, and (J) three-dimensionalize the formed plane This is a method of combined construction characterized by processing and assembling processes that are three-dimensionalized while sequentially stacking on the assumption that it corresponds to the wall, floor or roof of the building in advance, and is uniform in the length direction In the center of the width of the wood having a square cross section, a groove of a required length is cut in parallel to the longitudinal direction of the wood, and the wood is cut into a predetermined length to form upper, lower, left and right materials, so that the groove faces the outer surface. A rectangular frame material that is reinforced by inserting a brace and is arranged on four sides in combination, and a single material that is provided on two opposite sides of the groove having the same shape as the groove provided on the outer surface of the upper, lower, left, and right members. When the combination is used as a unit, both grooves are arranged so as to face each other, and an appropriate adhesive is applied to the joint surface between the rectangular frame material and the single material or the rectangular frame material, insert the appropriate connection member groove formed holes, contact and fixed by an appropriate fastening means When the ends of the single material (7) are connected and extended in the longitudinal direction, at least 35 to 65 of the length of the joining surface with reference to any end of the joining surfaces of the adjacent rectangular frame members It is a unit component material of a combination building characterized by a structure with a connection point selected from a percentage range, and uses a unit component material consisting of a combination of a square frame material and a single material and, a corner of the corner of a building surrounding comprising a plane continuously connected laminating the frame member and the single member to the left and right many back and forth, covering with a plurality of L-shaped brackets, using the connecting material between the gold instrument It is a binding material for a combination building characterized in that it is connected to an endless to form a hook shape, the length of the connecting material is adjusted to remove looseness of the hook, and an appropriate tension is applied between L-shaped brackets to reinforce.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The first feature of the present invention is that the shape of the wood used in the conventional construction method is selected from the range of about 3000 to 7200 mm (10 to 24 scales) with a regular or flat cross-sectional shape of a grindstone. In contrast to using a lot of wood appropriately, the rectangular frame uses a length selected from the range of about 400 to 2000 mm, and uses a relatively long material only for a single material. It is a unit component of the material shape.
[0010]
The second feature of the present invention is that there are flat surfaces such as walls, floors, and roofs in buildings, but the structure by the conventional method is complicated, and even if you look at the structure of the wall surface alone, the foundation / beams, girders or torso It consists of members such as through pillars, studs, braces, etc., and many types of joints are usually used for the parts where each member touches or intersects. A large number of unit constituent members, which are a combination of a square frame member made of braces and a single member, are used to obtain a required plane, and a plurality of planes are combined to form a solid.
[0011]
The third of the features of the present invention is a groove cut into two opposing faces of the outer periphery of the rectangular frame material and the single material, and the rectangular frame material and the single material or the rectangular frame material are combined with each other In addition, by inserting either a long thin wood, an aluminum alloy material or a steel material, which has a cross section of the same shape as the groove hole, into the groove formed in the facing joint surface of both as a required length, At the time of connection, it is possible to easily ensure the uniformity of the level of the combination surface between the rectangular frame material and the single or rectangular frame material, and at the same time, the effect of improving the connection strength can be obtained.
[0012]
A fourth feature of the present invention is that when a single material needs to be connected in the longitudinal direction, the connection of adjacent rectangular frame materials at the connection position is separate from the joint formed at the end of the single material itself. If it is configured so that it is preferably at the middle point of the surface, the connection location of the single material is reinforced by the joint surface of the rectangular frame material, so that the connection strength of the single material is dramatically improved. It is more effective when the surface is supported by a slab of a rectangular frame material.
[0013]
In order to make full use of these characteristics, after applying and bonding a suitable adhesive to each joint surface of the rectangular frame material, single material, and the last to be joined, until the required adhesive strength is reached. In the meantime, if you use an appropriate tool such as C-clamp, or use bolts and tighten the related materials together with the nuts, you can obtain a much higher bonding effect by crimping, which is necessary for walls, floors and roofing materials It becomes possible to provide strength.
[0014]
When a particularly strong reinforcement is required for the joints, the last material is selected from metals such as steel and aluminum alloy, and L-shaped brackets are attached to the corners of each corner of the building, and the length between the brackets is increased. This is necessary for the construction of a large plane and the three-dimensional combination of multiple planes by using a tie-like binding material connected with a plate or bar with an adjustment function and removing the looseness of the ridge by the adjustment function. Sufficient strength can be imparted sufficiently and easily.
[0015]
[Action]
Applying the combination building method and unit construction material and binding material based on the present invention to building walls, floors and roofing materials, within the range of the dimensions of the rectangular frame material to be used, windows, doors, lighting, etc. It is possible to construct a three-dimensional plane composed of a large plane and a plurality of planes while maintaining the strength necessary for the opening.
[0016]
[Example 1]
FIG. 1 (A) shows a rectangular frame 1 which is one of the unit components, and the frame is composed of upper and lower members 2, 4, left and right members 3, 5 and a brace 6. Is fixed with an appropriate joint such as a tenon joint and an adhesive, so that it is finished to a sufficient strength, and a cross-sectional view taken along line aa in FIG. As shown in FIG. 1B, the square grooves 2 ₁ , 3 ₁ , 4 ₁ , and 5 ₁ are provided. However, the square grooves are not necessarily required in the case of a material that is not to be connected.
[0017]
The dimension of the substantially square frame material 1 in this example is wood with a cross section of 85 mm square and the outer dimension is 910 mm × 825 mm, but the short side is obtained by combination with the single material 7 shown in FIG. However, this dimension can be formed by selecting each side of the cross section from the range of 40 to 120 mm and the length from the range of 400 to 2000 mm depending on the purpose and place. By connecting and assembling many materials, it helps to save materials, labor and cost.
[0018]
As shown in FIG. 2 (A), the single material 7 which is another unit component material is used in combination with the substantially square frame material 1 so that the centers of the two opposing surfaces of the single material 7 are the same. In the case where the rectangular grooves 7 ₁ and 7 ₂ having the same cross-sectional shape as the frame body ₁ are formed in the longitudinal direction and extension in the longitudinal direction of the material is necessary, appropriate joints are provided at both ends and fixed with an adhesive, preferably to the middle of the joining edge of the square-shaped frame member of an adjacent vertical connection position (see F14 ₄₅ in FIG. 3) it is also desirable in order to enhance the strength.
[0019]
2A is a small panel made up of unit component members obtained by joining the rectangular frame materials 1 and 1A of FIG. 1A and the single material 7 of FIG. 2, and a rectangular frame material with the single material 7 sandwiched therebetween. 1, 1A is fixed from both sides with an adhesive and a bolt nut 9, but as shown in the cross-sectional view of FIG. 2 (B), the holes formed by the square grooves 5 ₁ , 7 ₁ and 7 ₂ , 5A ₁ on the joint surface 8. Since the yato 10 made of the same shaped square is inserted, the level of the left and right rectangular frame bodies 1 and 1A can be easily leveled and assembled, and the small panel that has been fixed is sufficient as a building material. Holds strength.
[0020]
One end of the single material 7 having the square grooves 7 ₁ and 7 ₂ on two opposite sides starts from the same position as the lower side of the lower material 4 and 4A of the rectangular frame material, and the upper material 2 and 2A (depending on the connection location) Of the length from the upper side to the other end 7A projecting from the upper side to the joining length of the rectangular frame material to which the projecting length is adjacently connected is 35 to 35 mm. The length of the single material 7 is determined so as to be selected from the range of 65% and preferably 50%.
[0021]
However, the position of the connecting end 7A of the single material 7 does not always need to be in the middle of the next frame material, and it is natural that the single material 7 is preferably long. The small panel made of the unit component material of this example has dimensions based on the building scale. The width of the rectangular frame material is 910 mm (half), the height is 910 mm (half), and the single material length is 910 mm × It is 1.5 times (between 3/4), and when a through bolt and a nut 9 are used to bind them, an adhesive is not necessarily required depending on the use conditions.
[0022]
The unit components of various dimensions made in this way can be produced in the factory, and even if the length of the timber as a material is relatively short, the finished material has sufficient strength to play a role as a building material. Since it is easy to form a large plane by laminating, it is difficult to obtain long materials at a low price. It can be said that.
[0023]
[Example 2]
FIG. 3 is an axial view of a wall 11 in which a large number of rectangular frame members, which are unit constituent members, and a single material are combined. The walls are stacked on a single material (base) 13A placed on a foundation 12. On the outer wall of a two-story building, the first floor is stacked in three steps with rectangular frames 15A ₁ , 15A ₂ , 15A ₃ in close contact with the single material (column) 14A ₁ toward the left side of the figure. Single material (interspace) 14B ₁ / frame material 15B ₁ / omitted / 15B ₃ in the direction, single material 14C ₁ / frame material 15C ₁ / omitted / single material 14C ₃ / 15C ₃ , single material 14D ₁ / frame material 15D ₁ , 15D ₂ , 15D _3, and in the single material 14E ₁ , 14F ₃ , the frame material is omitted for each two steps to be 15E ₃ , 15F _3, and from the single material 14G ₁ , the frame materials 15G ₁ , 15G ₂ , 15G ₃ single member 14H ₁ · frame member 15H _1, 15H _2, concatenated stacked in this order 15H ₃ · single member 14I _1, solid and Tanzai (digits) 13B to the left (middle) Although was adopted as the plane, stacking order is not necessarily limited to the order described above.
[0024]
The second floor portion may be laminated on the single material (girder) 13B in the same manner as the first floor portion. For example, when the single material (intermediate column) 14F ₄ is short and the connecting portion is placed at the position 14F ₄₅ , the frames 15E ₅ and 15F _No shortage of strength occurs between the two and the shape of the wall body is completed with the single material (eave girder) 13C at the left end, but the portion that is not laminated when combining the single material and the frame material ( (B) in the figure may be used as an opening for the frame of the door or window, and if the dimensions of the unit component material are determined by the building scale, it will not hinder the attachment of the joinery.
[0025]
4 is a sectional view taken along the line dd in FIG. 4, and FIG. 5 is a cross-sectional view taken along the line dd in FIG. 4. The wall 11 is connected to the wall 16 by a single material (column) 14 </ b> A _1. (Space pillars) 14D ₁ is connected to the partition wall 17 and has a structure in which the plate 19 is attached to the inner and outer surfaces by using the heat shield 18 at the slot of each joint. What is necessary is just to construct | assemble, if the cross section and length of wood to be used should just select the dimension according to required intensity | strength, if the through-bolt nut shown in FIG. 2 (A) of Example 1 also uses an appropriate number for a required location Good.
[0026]
Since the plane assembled in this way is used by alternately facing the braces, it has a strong resistance to the force parallel to the surface, and it is applied as a material for walls, floors and roofs and used as a solid, In addition to exhibiting sufficient strength as a building material and enabling a high-rise, it helps to reduce the number of assembly days on site in addition to saving resources through standardization, so it can contribute to reducing the total cost of housing construction. .
[0027]
[Example 3]
FIG. 6 is an axis diagram of a floor or roof material formed by sandwiching a single material 24 between rectangular frame materials 22 and 23, and the width of the rectangular frame material and the single material is 455 mm (1/4). A floor or roof panel 21, and when the panel is used as a flooring material, the single material 24 has a dimension suitable for a beam and a floor plate is stretched on the surface, and when the panel is used as a roofing material, the single material 24 may be a size suitable for sagging and a ground plate may be stretched on the surface. In FIG. 6, the shapes of the rectangular frame members 22 and 23 are different, but they may be aligned to any one.
[0028]
[Example 4]
7A is a cross-sectional view taken along line ee in FIG. 3, and FIG. 7B is a side view including a partial cross section taken along line ff in FIG. A single material (column) 14A ₁ , (column) 14A ₄ and a rectangular frame material 15A ₃ , 15A ₄ with a single material (girder or torsion) 13B sandwiched between them are joined by an L-shaped bracket 25. Once reinforced, the metal fittings cover the corners where the two surfaces intersect, and the steel inserted into each joint is made of steel, and bolts 26 are welded to both sides of the material to penetrate the single material, Indicates a means for fastening the adhesive surface to the surface of the metal fitting 25 and the other end to the surface of a single material. This means may be simply nut-fixed except for the L-shaped metal fitting 25 except at the corners of the corners. .
[0029]
FIGS. 8A and 8B show tightening means capable of exerting a reinforcing effect not only on a corner portion having a large adhesive surface but also on other adhesive portions. FIG. 8A shows an L-shaped bracket 25. Is used to weld the plate-like material 28 to both ends in the L-shaped direction, and the other end is bent at a part and provided with a mounting hole for connection to another plate-like material, and connected with a bolt and nut. If it is inserted, the left and right L-shaped metal fittings 25 are placed in a tension state, so that the strength of the building itself is improved, and if the periphery is connected endlessly by the same means, it becomes a binding material that can obtain the same high effect as the tightening. In this means, since the plate-like material 28 comes out on the surface, the outer surface processing such as plate tension may be somewhat hindered.
[0030]
In FIG. 8A, the L-shaped metal fitting 25 and the plate-like material 28 are connected by welding. However, in FIG. 8B, a rod-like material 29 having screws at both ends is used, and one end of the rod-like material is L-shaped. When the nut 30 is fastened through the hole opened in the metal fitting 25 and the other end is connected and tightened with the turnback 31, the left and right L-shaped metal fittings 25 are placed in tension, improving the strength of the building itself. If these are connected by the same means and endless, it becomes a binding material that can obtain a high effect as in the previous section, and since this means can pass through a small hole in the wood, it does not hinder the outer surface processing such as sheeting.
[0031]
【The invention's effect】
The following effects were obtained by using the combination building method, unit constituent material and binding material according to the present invention.
{Circle around (1)} By laminating unit constituent materials, a large and strong flat surface that can be used satisfactorily as a building wall, floor or roofing material was easily obtained.
(2) The rectangular frame material constituting the unit component and the wood required for the single material have a wider selection range than the wood size and quality required by conventional construction methods.
(3) Since the periphery of the building can be tightened with metal fittings, the reinforcing effect was easily obtained.
(4) Procurement and processing became easier because the number of members and types of joints were significantly reduced compared to conventional methods.
(5) The factory production of the main materials was made possible, so the work content at the site was limited to only assembly and the total man-hours were greatly reduced.
[Brief description of the drawings]
FIG. 1A is a front view of a rectangular frame member shown in Example 1, and FIG. 1B is a cross-sectional view taken along line aa in FIG.
2A is a front view of a small panel made of a unit component material using the rectangular frame material of FIG. 1A, and FIG. 2B is along the line bb in FIG. 2A. It is sectional drawing.
FIG. 3 is a front view of a wall according to the second embodiment.
4 is a view taken in the direction of arrow c in FIG. 3;
5 is a cross-sectional view taken along the line dd in FIG.
6 is a plan view of a panel for a floor or a roof according to Embodiment 3. FIG.
7A is an enlarged cross-sectional view of a corner portion along line ee in FIG. 3A, and FIG. 7B is a partial cross-section along line ff in FIG. FIG.
8A and 8B are perspective views of a reinforcing binding material of Example 4. FIG.
[Explanation of symbols]
1, 1A, 15A _{1 to} 15H ₆ Square frame member of shape _{7,14A 1 ~14I 1, 14C 3,} 14F 3 , 14A ₄ , 14A ₄₅ , 24 single material (pillar, stud)
8 square slot 9 bolts and nuts 10, 18 Yato 11 wall 13A, 13B, 13C single material (base, girder, eaves)
21 Panels 22, 23 Rectangular frame material 25 L-shaped bracket 26 Bolt 28 Plate material 29 Bar material

Claims (7)

In a building that uses wood as the main material and comprises each part of the flat wall and floor and roof, use wood with a uniform rectangular cross section in the length direction, and (A) from the width center of the wood, A groove having a required length is formed in parallel with the longitudinal direction of the wood, and (B) the wood is cut into a plurality of predetermined lengths to form upper, lower, left and right members (2, 3, 4, 5) so that the grooves face the outer surface. And is arranged on four sides and formed into a rectangular frame material ( _1, 15A _{1 to} 15H ₆ ) reinforced by inserting a brace (6) to form one of the unit components, (C) up, down, left, right Grooves (2 ₁ , 3 ₁ , 4 ₁ , 5 ₁ ) formed in the material (2, 3, 4, 5) and grooves (7 ₁ , 7 ₂ ) having the same cross-sectional shape ) In the longitudinal direction of two opposite sides (7, 14A ₁ ~ 14I ₁ ) Is formed as one of the unit constituent materials, and (D) the rectangular frame material (15A ₁ ˜15H ₁ ) on the basis of the single material (13A) arranged on the lower side, the single material (14A _{1 to} 14I ₁₎ arranged to be orthogonal to the single material ) A rectangular frame material (15A ₁ ) on both sides so as to contact or sandwich one side of ˜15H ₁ ) to assemble the lower side of the plane, and (E) assemble by expanding the plane while sequentially connecting the rectangular frame material and the single material in at least one direction from the end of the plane. F) At the other end of the plane, the top side of the plane is finished using a single material (13B, 13C) as in the case of the single material (13A). (G) During the plane construction process, the rectangular frame material is placed at an appropriate place. An appropriate number is deleted to form a mounting opening such as a window, and (H) when connecting and extending the ends of a single material in the longitudinal direction, either end of the joining surface of adjacent rectangular frame members And (I) a joint surface between a rectangular frame material and a single material or a rectangular frame material, with a position determined by selecting at least a range of 35 to 65% of the length of the joint surface with reference to Then, an appropriate adhesive is applied, and the connecting material (10, 18) is inserted into the groove formed on the joining surface, preferably (J) A process of three-dimensionalizing while sequentially stacking, assuming that it corresponds to a wall, a floor or a roof of a building in advance. A method of combined construction characterized by an assembly process.   Appropriate tightening means connect the L-shaped brackets (25) covering and reinforcing the corners with many joints endlessly with a connecting material to form a hook-like shape and adjust the length of the connecting material The method of combined construction according to claim 1, characterized in that loosening of the ridge is removed and appropriate tension is applied between the L-shaped brackets (25). In a building composed of wood as the main material and comprising flat walls, floors and roof parts, it is required to be parallel to the longitudinal direction of the wood at the center of the width of the wood having a uniform rectangular cross section in the length direction. Cut the length of the groove, cut the wood into a predetermined length to make the upper, lower, left and right materials (2, 3, 4, 5), the grooves (2 ₁ , 3 ₁ , 4 ₁ , 5 ₁ ) face the outer surface The rectangular frame material (1) reinforced by inserting the brace (6) and reinforcing the groove (7 ₁ , 7, 7 ₂ ) as a unit of a combination with a single material (7) provided on two opposite sides, and arranged so that both grooves face each other in the combination, a rectangular frame material and a single material or a rectangular shape Appropriate adhesive is applied to the joining surfaces of the frame members, and an appropriate connecting material is inserted into the slot (8) formed by both grooves, and the appropriate tightening is performed. Joined and fixed by a saw means, when connecting the ends together in a single member (7) in the longitudinal extension, with reference to the one end of the junction surface of the frame member adjacent square shape, at least the bonding surface A unit component for a combined building, characterized in that it has a structure with a connection point selected from a position selected from a range of 35 to 65 percent of the length . As soon as the appropriate connecting material is formed of either a rod-shaped aluminum alloy material or steel material having the same cross section as the slot (18) , appropriate tightening means are welded to both sides of the previous (18). 4. The unit component of a combined building according to claim 3, wherein a threaded portion at the tip of the connected metal rod (26) protrudes from the wood surface and is fixed using a nut . In a building composed of wood as the main material and comprising flat walls, floors and roof parts, it is required to be parallel to the longitudinal direction of the wood at the center of the width of the wood having a uniform rectangular cross section in the length direction. Cut the length of the groove, cut the wood into a predetermined length to make the upper, lower, left and right materials (2, 3, 4, 5), the grooves (2 ₁ , 3 ₁ , 4 ₁ , 5 ₁ ) face the outer surface The rectangular frame material (1) reinforced by inserting the brace (6) and reinforcing the groove (7 ₁ , 7, 7 ₂₎ using the unit configuration members composed of a combination of Tanzai (7) which is provided at opposite two sides, and the building perimeter comprising a plane continuously connected laminating the frame member and the single member in the left and right many longitudinal The corners of the corners are covered with a plurality of L-shaped metal fittings (25), and between the metal fittings are connected endlessly using a connecting material to form a hook-like shape. Strap combination building, characterized by reinforcing giving between the length adjustment and hoop loosening removed appropriately tension the L-shaped bracket (25). A connecting member of an L-shaped metal fitting (25) that reinforces the corner of the corner is a strip plate (28 with one end connected to the metal fitting by welding or a bolt nut and the other end provided with a metal fitting for fastening such as a bolt nut. The binder for a combined building according to claim 5 , wherein: The connecting member of the L-shaped metal fitting (25) that reinforces the corner of the corner is connected to one end of the metal rod (29) with a screw by welding or a nut, and the other end via a turnbuckle (31). The binding material for a combined building according to claim 5 , wherein the binding material is connected to another threaded metal bar.