JP4260736B2 - Steel house bearing wall structure - Google Patents

Description

  The present invention relates to a structure of a load-bearing wall of a steel house.

As shown in FIG. 11, a conventional steel house bearing wall 100 has a frame 110 formed by combining thin and light grooved steel, and a face material 120 such as a gypsum board, a wooden plywood, and a steel face plate. It is configured to be attached by a simple screw (see, for example, Patent Document 1). The frame 110 and the face member 120 are integrated to resist external force, so that the strength of the wall is maintained and the safety of the building is achieved.
JP 9-287240 A (paragraphs 0010 to 0016, FIG. 1)

  FIG. 12 is a graph showing the relationship between the shear strength of the bearing wall 100 of the steel house and the amount of deformation. A line A in the graph indicates a case where a plywood surface material (woody plywood) is used as the surface material 120, and a line B indicates a case where a steel plate surface material is used as the surface material 120.

  When a plywood face material is used as the face material 120, the amount of deformation up to breakage (marked with x in the figure) is larger than when a steel plate face material is used, and it resists tenaciously against external forces. There is a problem that it deforms greatly with a small shearing force. In other words, because the amount of deformation is large, it takes a long time for the building to collapse after the bearing wall 100 yields, but the building is deformed by a relatively small shearing force, requiring repair or being unusable. There is a problem that it ends up.

  On the other hand, when a steel plate face material is used as the face material 120, it can resist a large shearing force compared to the case where a plywood face material is used (not yielding), but the deformation amount after yielding is small. There is a problem that the tenacity of the building is lacking. That is, even if a relatively large shearing force is applied to the building, it is okay, but when a shearing force exceeding the limit is applied, the deformation amount until the load bearing wall 100 breaks down is small, and in a short time. There is a problem that the building collapses.

  In addition, by increasing the thickness of the face material 120, the performance of the load bearing wall 100 can be improved. However, since the weight of the load bearing wall 100 increases, the workability during assembly deteriorates and the material cost also increases. It will increase.

  The present invention has been made to solve these problems, and has a higher load-bearing performance per weight than a load-bearing wall using a face material, in other words, a steel house having a smaller weight per load-bearing performance. It is an object to provide a load-bearing wall structure.

The load-bearing wall structure of a steel house according to claim 1 is erected between an upper frame member and a lower frame member, which are disposed at positions facing each other with a space therebetween in the vertical direction, and the upper frame member and the lower frame member. A bearing wall structure of a steel house consisting of at least a pair of eaves frame members and a plurality of brace members installed between the pair of eaves frame members, wherein both ends of the plurality of brace materials are It is pin-joined to a pair of rib frame materials, and the construction surface surrounded by the adjacent brace material and the rib frame material is all configured in a triangle, and the rib frame material is composed of at least two C-shaped steel bars. Alternatively, the back surfaces of the grooved steel webs are joined to each other, and the C-shaped steel or the grooved steel is erected with the opening of the groove facing the out-of-plane direction of the bearing wall. or web back of the interposition steel is arranged along the plane direction of the bearing wall And wherein the door.

According to such a configuration, both end portions of the plurality of brace members are pin-joined to the pair of rib frame members, and the construction surfaces surrounded by the adjacent brace members and the rib frame members are all triangular. Therefore, the truss structure is configured by the pair of frame members and the plurality of brace members. Such a truss structure requires less steel weight per unit meter in the width direction of the wall than when a face material is used, and it is tenaciously resistant to shear deformation. Compared to the wall, the load-bearing performance per weight is higher, in other words, the load-bearing wall structure of the steel house is smaller in weight per load-bearing performance. In addition, the present inventors have confirmed the performance of the truss structure by conducting experiments on various bearing walls.
Moreover, according to this structure, since the opening part of C-shaped steel or a channel-shaped steel faces the out-of-plane direction of a load-bearing wall, a brace material does not become obstructive at the time of an assembly operation. In addition, since the operator can handle the tool in front of the body, the assembly work is facilitated. Therefore, when fixing the frame material to the lower frame material or boundary beam using bolts, nuts and hole down hardware, etc., the bolts and nuts must not be fixed in advance to the hole down hardware or boundary beam by welding or the like. Even so, the frame material can be easily fixed. In particular, the handling width of a tool such as a spanner is increased, and the operation is facilitated.

  Here, the “composition surface” refers to a set of plane frames configured to resist external forces. Further, it is preferable that all the “composition surfaces” have the same size so that stress concentration does not occur. The term “pin joint” as used in the present application is not limited to a structure that is completely free of bending deformation (zero bending rigidity), but includes a structure in which shear rigidity is superior to bending rigidity. . Further, it is preferable to use a tapping screw for pin joining between the frame member and the brace member.

  The load-bearing wall structure of a steel house according to claim 2 is the load-bearing wall structure of a steel house according to claim 1, wherein the upper frame member, the lower frame member, the pair of eaves frame members, A face material is further attached to at least one side surface of a frame assembly composed of a plurality of brace materials.

According to such a configuration, a face material is further provided on at least one side surface of the frame assembly composed of the upper frame material, the lower frame material, the pair of collar frame materials, and the plurality of brace materials. Since the load-bearing wall structure of the steel house is constructed by mounting, the load-bearing performance per weight can be further enhanced.
The face material is preferably composed of a structural plywood, a steel face plate, or a gypsum board.

  Further, it is preferable that the upper frame material, the lower frame material, the eaves frame material and the brace material are made of thin lightweight steel. According to such a structure, since wood is not used, a load-bearing wall that is resistant to termites and fire can be obtained.

  Further, it is preferable that the pair of collar frame members include a joining member that is pin-joined with an end portion of the brace material. According to this structure, the end portion of the brace material and the collar frame material can be easily pin-bonded. In particular, when a frame material is formed by fitting two thin lightweight grooved steels, a joining member is attached to the outer surface of the web of the grooved steel, and the frame material and the brace material are interposed via the joining members. Are preferably pin-joined. Such a joining member can be formed, for example, by welding a plate material, L-shaped steel, channel steel, or the like cut to an appropriate length to the web outer surface of the channel steel. A hexagon bolt-nut or a tapping screw can be used to connect the brace material and the joining member.

The load-bearing wall structure of a steel house according to claim 5 includes a pair of eaves frame members erected at a predetermined interval, an upper frame material connecting upper ends of the eave frame materials, and a lower end of the eaves frame material A steel house load-bearing wall structure comprising a lower frame material for connecting each other and a plurality of brace materials connected between mutually facing side surfaces of the pair of rib frame materials, and both ends of the plurality of brace materials Are pin-bonded to the pair of rib frame members, and the construction surface surrounded by the adjacent brace material and the rib frame material is all configured in a triangle, and the rib frame members include at least two rib frame members. The C-shaped steel or the groove-shaped steel back surfaces are joined to each other, and the C-shaped steel or the groove-shaped steel is erected with the opening of the groove facing the out-of-plane direction of the bearing wall, and The web back of C-shaped steel or channel steel is arranged along the in-plane direction of the bearing wall And said that you are.

Moreover, the load-bearing wall structure of a steel house according to claim 6 is the load-bearing wall structure of a steel house according to claim 1 or 5 , wherein an upper end side in the groove of the C-shaped steel or the groove-shaped steel and A plate having a through-hole is fixed to the lower end side, and the C-shaped steel or the groove-shaped steel is connected to a boundary beam arranged above and below the bearing wall through a bolt inserted into the through-hole of the plate. It is fixed .

  According to such a configuration, since the opening of the C-shaped steel or the groove-shaped steel faces the out-of-plane direction of the load-bearing wall, the brace material does not get in the way during assembly work. In addition, since the operator can handle the tool in front of the body, the assembly work is facilitated. Therefore, when fixing the frame material to the lower frame material or boundary beam using bolts, nuts and hole down hardware, etc., the bolts and nuts must not be fixed in advance to the hole down hardware or boundary beam by welding or the like. Even so, the frame material can be easily fixed. In particular, the handling width of a tool such as a spanner is increased, and the operation is facilitated.

  According to the present invention, it is possible to provide a load-bearing wall structure for a steel house that has a higher load-bearing performance per weight than a load-bearing wall using a face material, in other words, a smaller weight per load-bearing performance. Thereby, the safety | security of a house, construction cost, seismic performance, etc. can be improved.

  The best mode for carrying out the present invention will be described in detail with reference to the drawings. In the drawings to be referred to, the same elements are denoted by the same reference numerals, and redundant description is omitted.

<First Embodiment>
FIG. 1 is a front view showing the structure of a load bearing wall according to the first embodiment.
As shown in FIG. 1, the bearing wall 1 includes an upper frame member 2, a lower frame member 3, a pair of eaves frame members 4 and 4, and a brace member 5. Here, for convenience of explanation, the brace members 5 are denoted by reference numerals as braces 5A, 5B, 5C, 5D, 5E, 5F, and 5G in order from the top of FIG. Each of these members is made of a thin lightweight steel having a thickness of 1.0 mm to 1.6 mm (hereinafter abbreviated as “grooved steel” as appropriate). The bearing wall 1 is between the first boundary beam LK made of H-section steel installed on the foundation of the building and the second boundary beam HK made of H-section steel installed on the boundary between the first floor and the second floor. Built.

  Although the bearing wall 1 formed in this way is not shown in the figure, a heat insulating material and an exterior panel are attached to the outdoor side surface, and an interior panel is attached to the indoor side surface. Become.

  The upper frame member 2 is attached to the lower surface of the lower flange of the second boundary beam HK with a drilling tapping screw so that the groove faces downward. Further, the lower frame member 3 is made of channel steel having the same size as the upper frame member 2, and is formed on the upper surface of the upper flange of the first boundary beam LK at a position facing the upper frame member 2 by a drilling tapping screw. It is attached with the groove facing up (see FIG. 2). That is, the upper frame member 2 and the lower frame member 3 are installed at positions facing each other with an interval corresponding to the height of the first floor of the building.

  The pair of eaves frame members 4, 4 are each configured by combining four channel steels, and are vertically spaced apart from each other by a predetermined interval between the upper frame member 2 and the lower frame member 3. Is erected. The space | interval of the horizontal direction of the collar frame material 4 is suitably set between 406.4 mm-1000 mm, for example. The upper and lower ends of the eaves frame material 4 are fitted in the grooves of the upper frame material 2 and the lower frame material 3, respectively. A joining member 7 for attaching the brace material 5 is fixed to the surfaces of the pair of collar frames 4, 4 facing each other. The saddle frame material 4 will be described in detail later with reference to FIG.

  In FIG. 1, only two fence frame members 4 are shown, but the fence frame member 4 has a predetermined length between the upper frame member 2 and the lower frame member 3 over the entire length of the wall of the building. A plurality are installed at intervals. The bearing wall 1 is constructed by installing a brace material 5 to be described later in a truss structure at a position necessary for the structure among the frame frames 4.

  The brace material 5 (5A, 5B,...) Has both ends thereof connected to the pair of collar frame members 4 and 4 via a joining member 7 provided on the web outer surface of the pair of collar frame materials 4 and 4. Are joined by a tapping screw S. For the upper end of the uppermost brace material 5A and the lower end of the lowermost brace material 5G, the upper frame material 2 and the lower frame material 3 are not the joint members 7 provided on the collar frame materials 4, 4. And is connected to the eaves frame members 4 and 4.

  In the first embodiment, as shown in FIG. 1, the lower end and the upper end of the brace material 5 (for example, the brace material 5 </ b> A and the brace material 5 </ b> B) that are adjacent to each other are positioned at the same position of the frame member 4 by one joining member 7. It is joined to. Thereby, the triangular composition surface P (P1, P2,...) Is formed by the brace members 5 and 5 adjacent to each other in the vertical direction and a part of the collar frame member 4. Further, the vertices of the triangular composition surfaces P1, P2,... Have a pin structure. Furthermore, the load bearing wall 1 according to the first embodiment is configured such that each of the composition planes P1, P2,. Therefore, the rigidity of each of the composition surfaces P1, P2,... Is equal, and the external force can be evenly distributed.

Next, with reference to FIG. 2, the structure of the collar frame material 4 and the joining structure of the collar frame material 4 and the lower frame material 3 are demonstrated. FIG. 2 is an exploded perspective view showing an enlarged portion A of FIG.
In the first embodiment, as shown in FIG. 2, the eaves frame member 4 is configured by combining four channel steels 4a, 4b, 4c, and 4d. Among these, the channel steels 4a and 4b are brought into contact with each other with their web surfaces back to back, and are joined by a tapping screw S. The outer widths of the channel steels 4a and 4b are substantially equal to the inner width of the groove of the lower frame member 3 (upper frame member 2), and are fitted into the grooves of the lower frame member 3 (upper frame member 2). Be able to.

The lower ends of the channel steels 4 a and 4 b are fixed to the first boundary beam LK by hole-down hardware 6 and 6.
The hole-down hardware 6 may be anything as long as it can join the eaves frame material 4 to the beam. In the first embodiment, as shown in FIG. The groove member 6a has a shape, a plate member 6b welded so as to partition the groove of the groove member 6a, and two nuts 6c and 6c welded to the plate member 6b. A through hole (not shown) is formed in the plate material 6b at a position communicating with the bolt hole of the nut 6c.

The hole-down hardware 6, 6 is in the groove at the lower end of the groove steel 4 a, 4 b in a state where the contact surface 6 a ₁ of the groove member 6 a and the web inner surface of the groove steel 4 a, 4 b are in contact with each other. Is installed. The contact surface 6a ₁ and channel-shaped steel 4a of the interposition member 6a, is inserted a hexagonal bolt into the bolt holes formed in the web inner surface of 4b, by tightening the nuts, the hold-down hardware 6,6 grooves The section steels 4a and 4b are firmly joined.
Further, the lower frame member 3 and the first boundary beam LK are provided with the web surface of the lower frame member 3 and the upper flange of the first boundary beam LK at positions corresponding to the nuts 6c, 6c welded to the hole-down hardware 6. A penetrating through hole T is formed. The channel steels 4a and 4b are fixed to the first boundary beam LK by bolts BT inserted from the through holes T to the nuts 6c and 6c.

  As shown in FIG. 2, the grooved steels 4c and 4d are members fitted from both sides so as to cover the grooves of the grooved steels 4a and 4b bonded back to back. The inner widths of the grooves 4c and 4d are substantially equal to the outer widths of the grooves 4a and 4b. The lengths of the channel steels 4c and 4d are formed to be equal to the distance L1 (see FIG. 1) between the lower end of the flange of the upper frame member 2 and the upper end of the flange of the lower frame member 3. The grooved steels 4c and 4d are fixed by fastening the flanges with the tapping screws S in a state of being fitted to the grooved steels 4a and 4b.

Next, with reference to FIG. 3, the joining structure of the collar frame material 4 and the brace material 5 is demonstrated. FIG. 3 is an exploded perspective view showing an enlarged portion B of FIG.
The joining member 7 is a member made of short lightweight grooved steel, and is interposed between the collar frame material 4 and the brace material 5 to connect the collar frame material 4 and the brace material 5. The joining member 7 is arranged with its groove facing the brace material 5 side, and is fixed by a tapping screw S in a state where the web 7a is in contact with the web outer surface of the collar frame material 4 (4c). .
The brace material 5 (5D, 5E) is made of lightweight channel steel, and the outer width of the web of the brace material 5 is substantially equal to the inner width of the groove of the joining member 7. One end of the brace material 5 is fitted in the groove of the joining member 7, and the flange 5 a of the brace material 5 and the flange 7 b of the joining member 7 are joined by a tapping screw S.
According to such a joining structure, since the shear rigidity is superior to the bending rigidity, the joining structure between the brace material 5 and the collar frame material 4 can be a pin structure (pin joining). .

  Here, with reference to FIGS. 1-5, the construction method of the bearing wall 1 is demonstrated. 4 and 5 are exploded perspective views for explaining the assembly order of the eaves frame material 4.

  First, the upper frame member 2 and the lower frame member 3 are attached to the lower flange of the second boundary beam HK and the upper flange of the first boundary beam LK with a drilling tapping screw or a tapping screw (not shown).

  Next, as shown in FIG. 4A, the web surfaces of the grooved steels 4a and 4b are brought into contact with each other and joined by a tapping screw S (not shown). Then, the hole-down hardware 6 and 6 are fixed by bolts BT and nuts N in the grooves at the upper and lower ends of the channel steels 4a and 4b.

  Then, as shown in FIG. 4 (b), the upper and lower ends of the combined channel steels 4a and 4b are fitted into the grooves of the upper frame member 2 and the lower frame member 3, and are erected vertically at predetermined positions. Let A through hole T is formed in advance at a position where the channel steels 4a and 4b are erected. Then, the bolt BT is inserted from the through hole T and engaged with nuts 6 c and 6 c welded to the hole-down hardware 6. Thereby, the channel steels 4a and 4b are fixed to the first boundary beam LK and the second boundary beam HK (see FIG. 1).

  Next, as shown in FIG. 5A, the grooved steels 4c and 4d are fitted from both sides to the grooved steels 4a and 4b erected between the upper frame material 2 and the lower frame material 3, and are mutually connected. Are joined with a tapping screw S. Further, the flange of the lower frame member 3 (and the upper frame member 2) and the flanges of the channel steels 4a and 4b are joined with a tapping screw S. Thereby, the eaves frame material 4 is erected vertically between the upper frame material 2 and the lower frame material 3 as shown in FIG.

  Then, as shown in FIG. 3, the joining members 7, 7... Are fixed to the web surface of the eaves frame member 4 (4 c, 4 d) using a tapping screw S at a predetermined interval.

  Next, the brace materials 5A, 5B... And the joining members 7, 7. Thereby, as shown in FIG. 1, the bearing wall 1 is completed.

FIG. 6 is a graph showing the relationship between the shear strength and the deformation amount for the conventional load-bearing wall structure and the load-bearing wall structure (truss structure) according to the first embodiment.
From the graph shown in FIG. 6, the load-bearing wall structure according to the present invention exhibits substantially the same deformation performance while exhibiting a shear strength of about 5 times that of a conventional load-bearing wall structure using plywood as a face material. I understand that.

Second Embodiment
FIG. 7 is a perspective view showing the structure of the load-bearing wall of the steel house according to the second embodiment.
The load-bearing wall 1 ′ of the steel house according to the second embodiment is different from the above-described embodiment in that a face material 9 is further attached to the side surface of the load-bearing wall 1 (see FIG. 1) of the steel house. Yes. In the second embodiment, the face material 9 is made of wood plywood.
According to such a configuration, the face material 9 can further improve the load-bearing performance of the load-bearing wall 1 ′ of the steel house.

<Third Embodiment>
FIG. 8 is a perspective view showing the structure of the load-bearing wall of the steel house according to the third embodiment.
The load-bearing wall 1 ″ of the steel house according to the third embodiment is less than the load-bearing wall 1 (see FIG. 1) of the steel house according to the first embodiment with respect to the upper frame material 2 and the lower frame material 3. The difference is that the frame 4 is rotated 90 degrees.
That is, the gutter frame material 4 of the load-bearing wall 1 ″ of the steel house according to the third embodiment is the opening of the grooves of the grooved steels 4a, 4b, 4c, 4d (see FIG. 2) constituting the gutter frame material 4. It is configured by combining J in a state in which J is directed in the out-of-plane direction of the bearing wall 1 ″.

FIG. 9 is an enlarged perspective view showing the vicinity of part C in FIG. In FIG. 9, the grooved steel 4c, 4d, the tapping screw S and the like are omitted.
As shown in FIG. 9, the grooved steels 4a and 4b constituting the frame member 4 are placed with their webs in contact with each other with the opening J of the U-shaped groove facing downward. The frame member 3 is erected in the groove of the frame member 3. Further, a hole-down hardware 6 'is fitted and fixed in the groove at the lower end of the grooved steel 4a, 4b. Similarly, a through hole is formed in the lower frame member 3 and the second boundary beam LK at a position corresponding to the through hole of the hole-down hardware 6 'so that the bolt BT can be inserted therethrough. The grooved steels 4a and 4b (the frame member 4) are fixed to the lower frame member 3 and the second boundary beam LK by the hole-down hardware 6 ′, the bolt BT, and the nut N.

In the load-bearing wall 1 according to the first embodiment, the brace material 5 may become an obstacle when a tool is inserted into the groove during assembly work. In the third embodiment, FIG. As shown, since the openings J of the channel steels 4a and 4b are oriented in the out-of-plane direction of the load-bearing wall 1 '', the brace material 5 does not get in the way. Since the tool can be handled in front of the body, the work is facilitated, so that the saddle frame material 4 can be attached to the lower frame material 3 even if the nut N is not previously fixed to the hole-down hardware 6 ′ by welding or the like. And can be easily fixed to the second boundary beam LK, in particular, the spanning width of the spanner SP (see the arrow in FIG. 9) is increased, and the operation is facilitated.
Conversely, for example, a bolt BT whose head is cut is fixed to the second boundary beam LK in advance by welding or the like, and the grooved steel 4a, 4b is erected at that position, and the nut is placed in the groove. It is possible to employ a construction method (procedure) in which N is fastened and fixed with a spanner SP or a ratchet (not shown). That is, since the range of construction method selection is widened, it is possible to select a suitable construction method according to the situation, thereby facilitating assembly work, shortening work time, and the like.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described with reference to FIG. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. FIG. 10 is a perspective view in which a bearing wall of a steel house according to the fourth embodiment is partially cut away. The bearing wall 10 of the steel house (hereinafter simply referred to as “bearing wall 10”) has a vertically symmetric structure, and therefore, only the vicinity of the lower end is shown enlarged in FIG.

  In the bearing wall 10 according to the fourth embodiment, compared to the bearing wall 1 of the steel house according to the first embodiment, the member thickness of each member constituting the bearing wall 10 is large, and the frame member 14 is The point which consists of two C-shaped steels 14a and 14b is mainly different.

(Bearing wall 10)
The bearing wall 10 mainly includes a pair of eaves frame members 14 and 14 erected at a predetermined interval between the first boundary beam LK and the second boundary beam HK, and the eaves frame members 14 and 14. The upper frame member 12 and the lower frame member 13 that connect the upper ends and the lower ends, and a plurality of brace members 15 that obliquely connect the mutually facing surfaces of the pair of frame members 14.

(Saddle frame material 14)
The eaves frame member 14 is a member that supports the load in the vertical direction acting on the load bearing wall 10. For example, “C-100 × 50 × 20 × 2.3” or “C-100 × 50 × 20 × 3.2”. The two C-section steels 14a and 14b having a large member thickness such as are fixed in a state where the web back surfaces are aligned. Since the C-shaped steels 14a and 14b are larger than the thin plate lightweight steel (member thickness 1.6 mm) used in the first to third embodiments, the member thicknesses are 2.3 mm and 3.2 mm, respectively. The desired strength can be demonstrated with two. The C-shaped steel 14a and the C-shaped steel 14b are preferably joined to each other by welding because the member thickness is large.
A plate 16 having a through-hole is welded and fixed in the groove at the end of each of the C-shaped steels 14a and 14b. By this plate 16, the bolt BT and the nut N, the frame member 14 becomes the first boundary beam. It is fixed to LK and the second boundary beam HK. The plate 16 is attached with a slight gap from the ends of the C-shaped steels 14a and 14b, and the plate 16 (and hence the frame member 14) is attracted to the first boundary beam LK by bolts BT and nuts N. Can be done.
In addition, a joining member 17 made of short channel steel is attached to the opposite side surfaces of the pair of frame members 14 (see the joining member 7 in FIG. 1), so that the brace member 15 can be connected. ing.

(Upper frame material 12 and lower frame material 13)
The upper frame member 12 and the lower frame member 13 are members that connect the upper end portions and the lower end portions of the pair of eaves frame members 14, 14. For example, “[−65 × 75 × 2.3” or “[− 67 × 75 × 3.2 ”or the like. The upper frame member 12 and the lower frame member 13 and the pair of eaves frame members 14 constitute a frame of the bearing wall 10.
The upper frame member 12 and the lower frame member 13 are attached so that a slight gap is left between the first boundary beam LK and the second boundary beam HK. Further, a spacer 18 is interposed in the gap.

(Brace material 15)
The brace material 15 is a member that restrains shear deformation in the in-plane direction of the load-bearing wall 10, and is made of, for example, channel steel having a size of “[−60 × 35 × 2.3”. The brace material 15 is pin-bonded to the opposite side surfaces of the pair of collar frame materials 14 via a bonding member 17. The ends of the two brace members 15 adjacent to each other in the vertical direction are connected to one (same) joining member, and the two brace members 15 and the frame member 14 form a triangular surface. Is formed. In other words, a truss structure is formed by the pair of eaves frame members 14, 14, the upper frame member 12 and the lower frame member 13, and the plurality of brace members 15. As a result, the yield strength per unit meter in the width direction of the wall is higher than when the frame is constrained by the face material, conversely, in the width direction of the wall necessary to achieve the same strength performance. It can be set as the load-bearing wall 10 of the truss structure where the steel material weight per unit meter is small.

  Note that the frame member 14 has the first boundary beam LK and the second boundary beam LK in a state in which the opening J of the groove of the C-shaped steels 14a and 14b constituting the frame member 14 faces the out-of-plane direction of the load bearing wall 10. It is preferable to be connected to the boundary beam HK. According to this configuration, for example, when a work such as a spanner SP is inserted into the groove from the opening J, the brace material 15 does not get in the way, and the assembly work is easy.

  As mentioned above, although the best form and an Example for implementing this invention were demonstrated in detail, this invention is not limited to this embodiment, A design change is suitably carried out in the range which does not deviate from the meaning of this invention. Is possible.

  For example, in the first to fourth embodiments, the brace material is configured in a shape such as a so-called Warren truss, but is not limited thereto, and may be configured in a shape such as a howl truss or a platform truss.

  Moreover, in 1st-3rd embodiment, although each member was joined with volt | bolt BT or the tapping screw S, as long as the brace material 5 and the collar frame material 4 are pin-joined, what kind of joining method will join. Also good.

  In the first to third embodiments, each member is made of a thin light-weight grooved steel, but is not limited to a grooved steel, and a thin light-weight C-shaped steel or the like may be used. Specifically, for example, “C-100 × 50 × 20 × 1.6” or the like can be used as the inner steel material (corresponding to the groove structures 4a and 4b) of the frame material. As the steel material (groove structures 4c, 4d), for example, “[−102 × 50 × 1.0]” or the like can be used. For the brace material 5, C-shaped steel (C-100 × 50 × 20 × 1.6), L-shaped steel, or the like may be used.

It is a front view which shows the structure of the bearing wall concerning 1st Embodiment. It is the disassembled perspective view which expanded and showed the A section of FIG. It is the disassembled perspective view which expanded and showed the B section of FIG. It is a disassembled perspective view for demonstrating the assembly order of a collar frame material. It is a disassembled perspective view for demonstrating the assembly order of a collar frame material. It is the graph which showed the relationship between the shear strength and deformation amount about the conventional bearing wall structure and the bearing wall structure (truss structure) which concerns on 1st Embodiment. It is the perspective view which showed the structure of the load-bearing wall of the steel house which concerns on 2nd Embodiment. It is the perspective view which showed the structure of the load-bearing wall of the steel house which concerns on 3rd Embodiment. It is the perspective view which expanded and showed the C section vicinity of FIG. It is the perspective view which notched and showed the load-bearing wall of the steel house which concerns on 4th Embodiment. It is a disassembled perspective view which shows the load-bearing wall of the conventional steel house. It is a graph which shows the relationship between the shear strength of the load-bearing wall of the conventional steel house, and a deformation amount.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bearing wall 2 Upper frame material 3 Lower frame material 4 Gutter frame material 5 Brace material 6 Hole down metal | hardware 7 Joining member P Construction surface

Claims (6)

An upper frame member and a lower frame member disposed at positions facing each other with an interval in the vertical direction;
At least a pair of eaves frame members erected between the upper frame member and the lower frame member;
A load-bearing wall structure of a steel house comprising a plurality of brace members laid between the pair of frame members,
Both ends of the plurality of brace members are pin-joined to the pair of frame members,
The construction surface surrounded by the adjacent brace material and the frame material is all triangular .
The frame material is formed by joining the back surfaces of at least two C-shaped steel or channel steel webs,
The C-shaped steel or channel steel is erected so that the opening of the groove faces the out-of-plane direction of the load-bearing wall, and the web back surface of the C-shaped steel or channel steel is in the in-plane direction of the load-bearing wall. Bearing wall structure of a steel house, characterized by being arranged along . A face material is further attached to at least one side surface of a frame assembly composed of the upper frame material, the lower frame material, the pair of collar frame materials, and the plurality of brace materials. The load-bearing wall structure of a steel house according to claim 1. The load-bearing wall structure of a steel house according to claim 2, wherein the face material is made of a structural plywood, a steel face plate, or a gypsum board. The load-bearing wall structure of a steel house according to any one of claims 1 to 3, wherein the upper frame member, the lower frame member, the eaves frame member, and the brace member are made of thin lightweight steel. A pair of eaves frame members erected at a predetermined interval;
An upper frame member connecting upper ends of the frame members;
A lower frame material connecting lower ends of the frame material,
A plurality of brace members connected between the mutually facing side surfaces of the pair of frame members, and a load-bearing wall structure of a steel house,
Both ends of the plurality of brace members are pin-joined to the pair of frame members,
The construction surface surrounded by the adjacent brace material and the frame material is all triangular .
The frame material is formed by joining the back surfaces of at least two C-shaped steel or channel steel webs,
The C-shaped steel or channel steel is erected so that the opening of the groove faces the out-of-plane direction of the load-bearing wall, and the web back surface of the C-shaped steel or channel steel is in the in-plane direction of the load-bearing wall. Bearing wall structure of a steel house, characterized by being arranged along . Plates having through holes are fixed to the upper end side and the lower end side in the groove of the C-shaped steel or channel steel,
  The C-shaped steel or the channel steel is fixed to boundary beams arranged above and below the load-bearing wall through bolts inserted through the through holes of the plate. 5. A load-bearing wall structure for a steel house according to 5.

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