Building structure

Abstract

To provide a building frame formed by a portal frame having a large opening and a general-part frame, which eliminates the need for increasing the wall thickness even when the story height of the general part changes or the load loaded on the portal frame changes, and eliminates the need for making the fixing method of an outer wall different between the portal frame and the general-part frame.SOLUTION: In a building frame 70 in which a gate-like frame 30 and a general-part frame 60 are connected, the gate-like frame 30 includes a ladder-type beam 20 including an upper chord member 21, a lower chord member 22 and a plurality of vertical members 23 connecting them, and a ladder-type column 10 which is provided with at least two columns 11 and a plurality of horizontal members 12 connecting them, and forming the gate-like frame 30 together with the ladder-type beam 20 by supporting the ladder-type beam 20, and a beam 50 forming the general-part frame 60 is connected to the upper chord member 21 or the lower chord member 22.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building frame. [Background technology]

[0002] In a built-in garage of a building or a store on the first floor of a building, a portal frame may be applied in which beams made of shaped steel materials such as large H-shaped steel with large cross-section are supported by ladder-type columns (ladder-type assembled columns) at both ends of the large opening to form a frame for the garage or store with a large opening. Here, the ladder-type column is a highly rigid column that has two columns and multiple cross members (connecting members) that connect the columns.

[0003] A general frame (general frame) is connected to the side of the portal frame, and the general frame forms the first floor, while the portal frame and the general frame form the floor beams (or floor beams) of the second floor. At this time, the beams of the portal frame and the beams of the general frame are connected to each other, so that the building frame consisting of the portal frame and the general frame is formed on the same structural surface.

[0004] In the above-mentioned building frame, when the floor height of the general frame increases, the height of the ladder-shaped columns that form the portal frame also increases, so the rigidity of the ladder-shaped columns that become relatively slender decreases. If the size of the ladder-shaped columns is increased in order to increase the reduced rigidity, then the wall thickness of the portal frame will increase, which is a problem.

[0005] On the other hand, in areas with heavy snowfall, the load acting on the beams that form the portal frame tends to be large, which necessitates the size of the beams being increased. However, if only the size of the beams of the portal frame is increased, it will differ from the size of the beams of the general frame, which leads to issues such as the need to use different methods of fixing the exterior walls between the portal frame and the general frame.

[0006] In this way, in a building frame formed by a portal frame with a large opening and a general frame, there is a strong demand for a building frame that does not require an increase in wall thickness even when the floor height of the general frame changes or the load applied to the portal frame changes, and that does not require different methods of fixing the exterior walls between the portal frame and the general frame.

[0007] Here, Patent Document 1 proposes a garage having a garage top portion that forms the garage top surface, and a plurality of support members that are configured in a columnar shape while having the properties of a load-bearing wall, and are positioned at multiple locations that overlap with the edges of the garage top portion in a plan view, supporting the garage top portion. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2010-209647 A Summary of the Invention [Problem to be solved by the invention]

[0009] Patent Document 1 discloses a garage-related structure, but as described above, it does not solve the inherent problems associated with building structures formed by a gate-type structure with a large opening and a general structure.

[0010] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a building frame formed by a portal frame with a large opening and a general frame, in which even when the floor height of the general frame changes or the load applied to the portal frame changes, it is not necessary to increase the wall thickness and it is not necessary to use different methods of fixing the exterior walls between the portal frame and the general frame. [Means for solving the problem]

[0011] In order to achieve the above object, one aspect of the building frame according to the present invention is as follows: A building frame in which a portal frame and a general frame are connected, The gate-shaped frame is A ladder beam having an upper chord, a lower chord, and a plurality of vertical members connecting the upper chord and the lower chord; A ladder-type column includes at least two columns and a plurality of cross members connecting the two columns, and supports the ladder-type beam to form a portal frame together with the ladder-type beam. The beams forming the general structure are connected to the upper chord or the lower chord.

[0012] According to this aspect, the portal frame has ladder beams in addition to ladder columns, and the upper or lower chord forming the ladder beam is connected to the beam of the general frame, so that even if the floor height of the general frame is increased, moving only the upper chord upward (changing the length of the vertical member of the ladder beam) does not cause the problem of the ladder columns becoming relatively slender and decreasing in rigidity, particularly when the upper chord is connected to the beam of the general frame. Also, since the ladder beam of the portal frame is generally more rigid than the beam of the general frame, even if the load acting on the ladder beam of the portal frame with a large opening becomes large, the beam of the general frame and the upper or lower chord connected thereto can be made to have the same size cross section, and the method of fixing the exterior walls can be made the same between the portal frame and the general frame.

[0013] Here, the "large opening" of the portal frame means a large span opening with an opening width of, for example, about 4P to 10P (P indicates a module, and can be set between 800mm and 1100mm, e.g., 910mm width, depending on the module design specifications). The ladder beam may be a Vierendeel structure beam with vertical members, or a structure beam with vertical members including both vertical members and diagonal members. In either form, the upper chord member, the lower chord member, and the multiple vertical members are welded or bolted to form a ladder beam that resists external forces by being integrated with the upper chord member and the lower chord member. Furthermore, the general frame may share the ladder column at one end of the portal frame with the portal frame, and the other column of the general frame may be provided with a load-bearing wall in addition to a general column.

[0014] Another aspect of the building frame according to the present invention is This is characterized in that the beams forming the general section frame and the upper chord and / or the lower chord, which are connected to each other, have cross sections of the same size.

[0015] According to this aspect, the beams and the upper chord and / or lower chord that form the general section frame, which are connected to each other, have cross sections of the same size, so that the fixing method (fixing position) of the exterior wall panels can be made common (identical) between the portal frame and the general section frame, and further, the size (and standard) of the beams applied to the building frame can be made common, thereby reducing the construction costs of the building frame.

[0016] Another aspect of the building frame according to the present invention is A characteristic of this structure is that connecting members are provided at positions in the space between the upper chord and the lower chord that correspond to the two columns.

[0017] According to this embodiment, by providing the connecting members at positions corresponding to the two columns in the space between the upper chord and the lower chord, a highly rigid ladder-shaped beam end structure in which the upper chord and the lower chord are integrated through the connecting members can be formed at or near the corner where a large bending moment and shear force occurs in the portal frame, and the end structure can resist the large bending moment and shear force. Here, the connecting members may be vertical members constituting the ladder-shaped beam, or may be members separate from the vertical members. In addition to the form in which two connecting members are attached at positions corresponding to the two columns in the space between the upper chord and the lower chord, a single horizontal connecting member may be attached so as to straddle the two columns in the space between the upper chord and the lower chord. This connecting member is also connected to the upper chord and the lower chord by welding or bolting, like the vertical members.

[0018] Another aspect of the building frame according to the present invention is The columns forming the ladder-shaped columns and the columns forming the general frame have the same size cross section.

[0019] According to this embodiment, the columns forming the ladder-shaped columns and the columns forming the general frame have the same size cross-section, so that the size (and standard) of the columns applied to the building frame can be made common, thereby reducing the construction cost of the building frame. Combined with the fact that the size (and standard) of the beams applied to the building frame can be made common as described above, it is possible to further reduce the construction cost of the building frame.

[0020] Another aspect of the building frame according to the present invention is A portion of the space between the upper chord and the lower chord is provided for the passage of piping.

[0021] According to this embodiment, since there are multiple spaces separated by multiple vertical members between the upper and lower chords that form the ladder-shaped beam, one or more of these spaces can be used for passing various types of piping (ventilation piping, electrical equipment piping, etc.), eliminating the need to provide a separate sleeve for passing piping as in conventional structures.

[0022] In another aspect of the building frame according to the present invention, The gate-shaped frame is a frame forming a garage or a frame forming a store, A feature of the structure is that the lower chord also serves as a wind-resistant frame.

[0023] According to this aspect, by applying the ladder-type beam, the lower chord forming the ladder-type beam can also serve as a wind-resistant frame, eliminating the need to provide a separate wind-resistant frame. For example, when a shutter or other opening reinforcement is installed on a large opening of a built-in garage, a wind-resistant frame is required, but the lower chord of the ladder-type beam also serves as this wind-resistant frame. Effect of the Invention

[0024] As can be understood from the above explanation, according to the building frame of the present invention, in a building frame formed by a portal frame with a large opening and a general frame, even if the floor height of the general frame changes or the load applied to the portal frame changes, it is not necessary to increase the wall thickness, and it is not necessary to use different methods of fixing the exterior walls between the portal frame and the general frame. [Brief description of the drawings]

[0025] [Figure 1] FIG. 2 is a front view of an example of a building frame according to the embodiment. [Diagram 2] FIG. 2 is a view taken along the line II-II in FIG. 1, showing a floor plan of the second floor of the building. [Diagram 3] 3 is a view taken along the line III-III in FIG. 2, showing an intermediate floor plan between the first and second floors of the building. [Figure 4] FIG. 2 is an enlarged view of part IV in FIG. 1, showing an enlarged corner portion of the portal frame. [Diagram 5] FIG. 2 is an enlarged view of a portion V in FIG. 1, showing a part of a ladder beam. [Figure 6] 6 is a view taken along the arrow VI in FIG. 5, showing the ladder beam from the longitudinal direction of the upper chord and the lower chord. [Figure 7] FIG. 7 is an enlarged view of part VII in FIG. 1, showing an enlarged view of a connection portion of an H-shaped steel that forms an upper chord member. [Figure 8] 8 is a view taken in the direction of the arrow VIII in FIG. 7. [Figure 9A] This is a schematic diagram explaining the connection structure between the beams (girthers) between the floors of the general structure and the exterior wall panels on the first and second floors. [Figure 9B] This is a schematic diagram explaining the connection structure between the ladder beams between the floors of the portal frame and the exterior wall panels on the first and second floors. [Figure 9C] FIG. 1 is a schematic diagram illustrating the connection structure between a large beam (girther) between floors of a portal frame and the exterior wall panels on the first and second floors in a conventional example. [Figure 10A] FIG. 1 is a schematic diagram showing an exterior wall panel in the connection area between the portal frame and the general frame before horizontal load is applied during an earthquake. [Figure 10B] 1 is a schematic diagram showing an exterior wall panel in the connection area between the portal frame and the general frame when a horizontal load is applied during an earthquake. FIG. [Figure 10C] FIG. 13 is a schematic diagram showing an exterior wall panel in a connection area between a portal frame and a general frame in a conventional example when a horizontal load is applied during an earthquake. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, a building frame according to an embodiment will be described with reference to the accompanying drawings. In this specification and the drawings, substantially the same components are designated by the same reference numerals, and redundant description may be omitted.

[0027] [Building structure according to the embodiment] An example of a building frame according to an embodiment will be described with reference to Figs. 1 to 10. Here, Fig. 1 is a front view of an example of a building frame according to an embodiment, Fig. 2 is a view taken along the line II-II in Fig. 1, which is a floor plan of the second floor of the building, and Fig. 3 is a view taken along the line III-III in Fig. 2, which is an intermediate floor plan between the first and second floors of the building. Fig. 4 is an enlarged view of part IV in Fig. 1, which is an enlarged view of a corner part of a portal frame, and Fig. 5 is an enlarged view of part V in Fig. 1, which is an enlarged view of a part of a ladder beam. Fig. 6 is an enlarged view of part VI in Fig. 5, which is a view of the ladder beam from the longitudinal direction of the upper chord and the lower chord, Fig. 7 is an enlarged view of part VII in Fig. 1, which is an enlarged view of a connection part of an H-shaped steel forming the upper chord, and Fig. 8 is an enlarged view of part VIII in Fig. 7.

[0028] The illustrated building frame 70 has a gate-shaped frame 30 and a general frame 60 that are connected to each other within the same structural plane. The illustrated example shows one structural plane to which exterior wall panels are attached in a multi-story building with two or more floors. Here, the building having the building frame 70 is a building with a built-in garage or a building with a store on the first floor, etc., and the gate-shaped frame 30 that forms the building frame 70 is a frame that forms the garage opening of the built-in garage or the opening of the store, etc.

[0029] The portal frame 30 has a ladder beam 20 and two ladder columns 10 that support the ladder beam 20 at both ends of the ladder beam 20 .

[0030] The ladder-type column 10 has two columns 11 standing at an interval and a plurality of cross members 12 connecting the two columns 11 horizontally, and the plurality of horizontal members 12 extending horizontally are arranged at intervals in the longitudinal direction (vertical direction) of the columns 11 and are welded to the two columns 11. In this specification, "welding" refers to appropriate welding selected according to the strength required for the connection and the connection mode (rigid connection, pin connection), such as groove welding (full penetration welding, partial penetration welding) and fillet welding.

[0031] The pillars 11 are formed of square steel pipes, and a base plate 13 is welded to the lower ends thereof, and the base plate 13 and a concrete (reinforced concrete) foundation 75 are fixed by anchor bolts 18. Note that the pillars 11 may be made of shaped steel material such as H-shaped steel other than square steel pipes.

[0032] The cross member 12 is made of a steel plate and is welded to the column 11 .

[0033] As shown in detail in FIG. 4, a block-shaped connector fitting 15 is welded to the top end of the column 11, and the connector fitting 15 is bolted to a lower chord member 22 that forms a ladder beam 20 by a bolt 17.

[0034] The length (height) t1 of the ladder-type column 10 is the length between the footing 75 to which the column 11 is bolted and the lower chord 22 of the ladder-type beam 20. In addition, the width t2 between the two ladder-type columns 10 forming the large opening (the distance between the outer columns 11 of the ladder-type columns 10) can be set in the range of about 4P to 10P, and for example, any distance (4.5P, 5P, 5.5P, etc.) at intervals of 0.5P within this range can be selected.

[0035] On the other hand, the ladder beam 20 has an upper chord 21, a lower chord 22, and multiple vertical members 23 connecting the upper chord 21 and the lower chord 22, and is a ladder beam of a Vierendeel structure in which the vertical members 35 are vertical members. Note that the ladder beam may have diagonal members in addition to the vertical members as the vertical members, and may have a structure in which the upper chord 21 and the lower chord 22 are connected by both the vertical members and the diagonal members.

[0036] Both the upper chord 21 and the lower chord 22 are formed from H-shaped steel, and the vertical members 23 are high-rigidity members formed from steel pipes, square pipes, or the like, and their upper and lower ends are rigidly joined by welding or bolts to the upper chord 21 and the lower chord 22. The total height of the ladder beam 20 can be set to approximately 500 mm to 800 mm (for example, 600 mm), and when H-200 or H-250 is used for the upper chord 21 and the lower chord 22, square pipes or the like with a height of approximately 100 mm to 300 mm are used for the vertical members 23.

[0037] 1, since the width t2 between the two ladder-type columns 10 is wide, the upper chord 21 is connected to two H-shaped steels 21' via connection parts 21a, and the lower chord 22 is connected to two H-shaped steels 22' via connection parts 22a. For example, by providing both connection parts 21a, 22a at positions offset from each other in the longitudinal direction of the ladder beam 20, it is possible to prevent the connection parts 21a, 22a from becoming structurally weak parts of the ladder beam 20.

[0038] As shown in Figures 7 and 8, at connection portion 21a (connection portion 22a has a similar configuration), the left and right H-shaped steel beams 21' are rigidly joined by both webs being bolted together with bolts 21c via splice plates 21b, and both upper and lower flanges being bolted together with bolts 21e via separate splice plates 21d.

[0039] As shown in Figures 1 and 5, at the points where the vertical members 23 are connected in the upper chord member 21 and the lower chord member 22, reinforcing ribs 21f, 22f are provided which are welded to the respective webs and upper and lower flanges.

[0040] As shown in Figure 6, an end plate 25 is welded to the interior side of the lower chord 22, and an end plate 27 is welded to the end of a small beam 26 made of H-shaped steel for under-floor storage and intermediate floors, etc., and both end plates 25, 27 are bolted together to connect the lower chord of the ladder beam 20 to the small beam 26 extending toward the interior side.

[0041] As shown in detail in Fig. 4, at the corner of the portal frame 30, two connecting members 29A, 29B are welded to the upper chord 21 and the lower chord 22 that form the ladder beam 20. More specifically, the two columns 11 that form the ladder column 10 are bolted to the lower chord 22 via connecting fittings 15, and directly above the bolted joint of the lower chord 22, the two connecting members 29A, 29B are welded to both the upper chord 21 and the lower chord 22.

[0042] In the illustrated example, one of the connecting members 29A is the same member as the vertical member 23 provided in the general portion of the ladder beam 20, and the other connecting member 29B is the same member as the connector fittings 15, 85. Note that both of the two connecting members may be the vertical members 23 or the connector fittings 15.

[0043] In the portal structure 30, when horizontal loads during an earthquake act on the structure, large bending moments and shear forces can act directly above the columns. Therefore, at the connection points of the ladder beam 20 to which the ladder column 10 is connected, two connecting members 29A, 29B connect the upper chord 21 and the lower chord 22 at positions corresponding to the two columns 11 of the ladder column 10, making it possible for the entire ladder beam 20 (total beam height) to resist bending moments, etc.

[0044] As shown in FIG. 1, a beam 50 constituting a general frame 60 is connected to an upper chord 21 of a ladder beam 20 constituting a portal frame 30 .

[0045] The general frame 60 has a beam 50 and a load-bearing wall 40 , and shares one of the ladder-shaped columns 10 of the portal frame 30 .

[0046] The bearing wall 40 has a pair of pillars 41, 42 erected with a gap between them, two dampers 46 attached to one of the pillars 41, a connector 44 connecting the two dampers 46, and two braces 43. Each brace 43 is disposed so as to connect the connector 44 to the intersection of the other pillar 42 with the beam 50 and the foundation 75.

[0047] The columns 41, 42 are formed from square steel pipes, and a base plate 47 is welded to the lower end of each column 41, 42. Each column 41, 42 is fixed to the foundation via its respective base plate 47 by anchor bolts 18.

[0048] The brace 43 is formed from shaped steel materials such as H-shaped steel, angle steel, and channel steel, square steel pipes, and the like.

[0049] One side of the damper 46 is welded to a reinforcing plate 45 made of flat steel or the like, and the reinforcing plate 45 is welded to the side of the column 41 made of a square steel pipe. The two dampers 46 are connected by a connecting member 44, and the ends of each brace 43 are welded to the protruding portion of the connecting member 44 that is on the outer side (upper and lower sides) of the attachment point of the damper 46.

[0050] The connecting member 44 is formed from shaped steel such as H-shaped steel or channel steel, or square steel pipe, and has sufficient rigidity to transmit the axial force from the brace 43 to the damper 46.

[0051] In the building frame 70 shown in Fig. 1, the beams forming the portal frame 30 are ladder beams 20, and the upper chord 21 forming the ladder beam 20 is connected to the beam 50 forming the general frame 60. Therefore, when the floor height of the general frame 60 is increased, for example, the height of the ladder column 10 can be maintained at the current height t1 by moving only the upper chord 21 of the ladder beam 20 upward in the portal frame 30 (by changing the length of the vertical member 23 of the ladder beam 20). This prevents a problem of a decrease in the rigidity of the ladder column 10 due to the height t1 of the ladder column 10 being higher (slenderer) than the current height.

[0052] Furthermore, according to verification by the inventors, even if the initial floor height of the general section frame 60 is 2630 mm (the same applies to the length of the ladder-type column 10) and the floor height of this general section frame 60 increases to 2950 mm, by applying the ladder-type beam 20, the original length of the ladder-type column 10 (2630 mm) can be maintained, thereby demonstrating that the rigidity of the ladder-type column 10 is increased by 1.5 times compared to the conventional example.

[0053] In addition, since the ladder beam 20 of the portal structure 30 has higher rigidity than the beam 50 of the general structure 60, even when the load acting on the ladder beam 20 of the portal structure 30 with a large opening becomes large, such as in a snow-covered area, the upper chord 21 joined to the beam 50 of the general structure 60 can have a cross-section of the same size as the beam 50, and the method of fixing the exterior walls can be the same between the portal structure 30 and the general structure 60.

[0054] Here, H-shaped steel with the same cross section size and standard is used for the upper chord 21 forming the ladder beam 20 and the beam 50 forming the general frame 60. This allows the fixing method (fixing position) of the exterior wall panels to be common (identical) as described above, and furthermore, the size (and standard) of the beams applied to the building frame 70 can be common, thereby reducing the construction cost of the building frame 70.

[0055] In the illustrated example, the upper chord 21 and the lower chord 22 are formed from H-shaped steel having cross-sections of different sizes, but both may be formed from H-shaped steel of the same size and standard.In this case, the upper chord 21 and the lower chord 22, and all of the beams 50 of the general structure 60 will be formed from H-shaped steel of the same size and standard, further enhancing the effect of reducing construction costs.

[0056] Furthermore, it is preferable that the column 11 forming the ladder-shaped column 10 of the portal frame 30 and the columns 41, 42 forming the load-bearing wall 40 of the general frame 60 are also made of square steel pipes of the same size and standard, which, combined with the standardization of the sizes and standards of the beams, makes it possible to further reduce the construction costs of the building frame 70.

[0057] 1, in the ladder beam 20, a plurality of spaces 24 separated by a plurality of vertical members 23 are provided between the upper chord 21 and the lower chord 22. By providing a portion of these spaces 24 for the passage of various pipes (ventilation pipes, electrical equipment pipes, etc.), it becomes unnecessary to provide a separate sleeve for the passage of pipes as in the conventional structure.

[0058] When the portal structure 30 is a structure that forms a large opening for a built-in garage, a shutter or other opening reinforcement is attached to the large opening of the built-in garage, and a wind-resistant frame is required; however, by applying the ladder beam 20, the lower chord 22, which is a component of the ladder beam 20, can also serve as a wind-resistant frame.

[0059] As shown in Figure 2, in the building shown in the example, the floor surface forming the second floor of the general area is directly above the built-in garage, which is rectangular in plan view, and a ladder beam 20 is applied between the four floors that form the built-in garage. As a result, the end of a small beam 64 supporting the second floor of the general area is attached to the ladder beam 20 on the inside of the room, and a horizontal brace 65 is spanned across the horizontal structure.

[0060] 3, ladder beams 20 are used between the four floors directly above the built-in garage, allowing for underfloor storage or a down floor to be formed between the second floor and the ceiling of the built-in garage. A horizontal brace 28 is placed across the small beam 26 directly above the built-in garage, which is connected to the lower chord 22 of the ladder beam 20.

[0061] Next, referring to Fig. 9, the connection structure between the ladder beams and the exterior wall panels constituting the building frame according to the embodiment will be described while comparing it with the connection structure between the beams and the exterior wall panels between floors in a conventional example. Here, Fig. 9A is a schematic diagram explaining the connection structure between the beams (girths) between floors of the general frame and the exterior wall panels of the first and second floors, and Fig. 9B is a schematic diagram explaining the connection structure between the ladder beams between floors of the portal frame and the exterior wall panels of the first and second floors. Also, Fig. 9C is a schematic diagram explaining the connection structure between the large beams (girths) between floors of the portal frame and the exterior wall panels of the first and second floors in a conventional example.

[0062] In the general frame shown in FIG. 9A, fittings 93, 94 are attached to the upper and lower flanges of beam 50 formed from H-shaped steel, and an exterior wall panel 91 on the second floor and an exterior wall panel 92 on the first floor are attached with bolts 95 via fittings 93, 94.

[0063] In the building frame 70 of the embodiment, the upper chord 21 of the ladder beam 20 that forms the portal frame 30 shown in Figure 9B is connected to the beam 50 of the general frame 60 shown in Figure 9A. Therefore, in the portal frame 30, as in the general frame 60, connecting fittings 93, 94 are attached to the upper and lower flanges of the upper chord 21, which is formed from an H-shaped steel of the same size as the beam 50, and the second floor exterior wall panel 91 and the first floor exterior wall panel 92 are attached with bolts 95 via the connecting fittings 93, 94.

[0064] In this way, in the building frame 70 according to the embodiment, the fixing positions of the exterior wall panels can be made common between the portal frame 30 and the general frame 60. Also, as shown in Fig. 9B, since there is a space 24 between the upper chord 21 and the lower chord 22, workers can reach into the space 24 from the inside of the room to install the exterior wall panels.

[0065] On the other hand, in the conventional example, as shown in FIG. 9C, a beam 21A made of a large-sized H-shaped steel is applied to a portal frame for the general frame 60 shown in FIG. 9A, and connecting fittings 93, 94 are attached to the upper and lower flanges of this large-sized H-shaped steel 21A, and an exterior wall panel 91 on the second floor and an exterior wall panel 92 on the first floor are attached with bolts 95 via the connecting fittings 93, 94.

[0066] As is clear from a comparison of Figs. 9A and 9C, the sizes of the beams 50, 21A differ greatly, and as a result, the fixing positions of the exterior wall panels differ between the portal frame and the general frame.

[0067] Next, referring to Fig. 10, the rocking behavior of the exterior wall panel when a horizontal load during an earthquake acts on the connection area of ​​the portal frame and the general frame of the building frame according to the embodiment will be described while comparing it with the rocking behavior of the exterior wall panel in the connection area of ​​the portal frame and the general frame of the conventional example. Here, Fig. 10A is a schematic diagram showing the exterior wall panel in the connection area of ​​the portal frame and the general frame before the horizontal load during an earthquake acts on it, and Fig. 10B is a schematic diagram showing the exterior wall panel in the connection area of ​​the portal frame and the general frame when the horizontal load during an earthquake acts on it. Also, Fig. 10C is a schematic diagram showing the exterior wall panel in the connection area of ​​the portal frame and the general frame of the conventional example when the horizontal load during an earthquake acts on it.

[0068] In the building frame shown in Fig. 10A before the horizontal load during an earthquake acts on it, the exterior wall panels 92, 91 on the first and second floors are arranged side by side with vertical and horizontal joints. When the horizontal load H during an earthquake acts on this building frame, the exterior wall panels 91, 92 will exhibit rocking behavior as shown in Fig. 10B. However, because the fixed positions of the exterior wall panels 91, 92 to the upper chord 21 of the ladder beam 20 connected to each other and the beam 50 of the general frame are the same, the rocking behavior of the exterior wall panels 91, 92 will be about the same, and therefore there will be no risk of the exterior wall panels 91, 92 colliding with each other.

[0069] In contrast, in the conventional example, as shown in FIG. 10C, the fixing positions of the exterior wall panels 91, 92 with respect to the beams 21A of the portal frame and the beams 50 of the general frame, which are connected to each other, are different, so that the rocking behavior of the exterior wall panels 91, 92 is different, and a collision S occurs in part of the exterior wall panels 91, 92, which may lead to damage to the exterior wall panels 91, 92.

[0070] In this way, according to the building frame 70, since the fixing positions of the exterior wall panels 91, 92 are common to the upper chord 21 of the interconnected ladder beam 20 and the beams 50 of the general frame, damage caused by collision between the exterior wall panels 91, 92 when a horizontal load H is applied during an earthquake can be effectively prevented.

[0071] In addition, the present invention is not limited to the configuration shown here, and may be implemented in other embodiments in which other components are combined with the configurations and the like of the above-mentioned embodiment. In this regard, the present invention may be modified within the scope of the gist of the present invention, and may be appropriately determined according to the application form. [Explanation of symbols]

[0072] 10:Ladder type pillar 11: Pillar 12: Horizontal material 13: Base plate 15: Connection fittings 17: Bolt 18: Anchor bolt 20: Ladder beam 21:Top chord material 21A: Beam (large H-shaped steel) 21': H-shaped steel 21a: Connection 21b, 21d: Splice plate 21c, 21e: Bolts 21f: Reinforcement rib 22: Lower chord 22': H-shaped steel 22a: Connection 22f: Reinforcement rib 23: Vertical member 24: Space 25: End plate 26: Small beam 27: End plate 28: Horizontal brace 29A, 29B: Connecting material 30: Gate-shaped frame 40: Load-bearing wall 41,42: Pillars 43: Brace 44: Connecting material 45: Reinforcement plate 46: Damper 47: Base plate 50: Beam 60: General part frame 64: Small beam 65: Horizontal brace 70: Building frame 75: Basics 80: Pillar 85: Connection fittings 87: Bolt 91, 92: Exterior wall panels 93,94: Connection fittings 95: Bolt H: Horizontal load S: Collision

Claims

1. A building frame in which a portal frame and a general frame are connected, The gate-shaped frame is A ladder beam having an upper chord, a lower chord, and a plurality of vertical members connecting the upper chord and the lower chord; The ladder-shaped column includes at least two columns and a plurality of cross members connecting the two columns, and supports the ladder-shaped beam to form a portal frame together with the ladder-shaped beam. The general frame includes a beam, a column supporting the beam, and one of the ladder-shaped columns, A building structure, characterized in that the beams forming the general structure are connected to the upper chord or the lower chord.

2. A building frame in which a portal frame and a general frame are connected, The gate-shaped frame is A ladder beam having an upper chord, a lower chord, and a plurality of vertical members connecting the upper chord and the lower chord; A ladder-type column includes at least two columns and a plurality of cross members connecting the two columns, and supports the ladder-type beam to form a portal frame together with the ladder-type beam. A beam forming the general frame is connected to the upper chord or the lower chord, A building structure, characterized in that the beams forming the general section frame and the upper chord and / or the lower chord, which are connected to each other, have cross sections of the same size.

3. 3. The building structure according to claim 1, wherein a connecting member is provided in the space between the upper chord member and the lower chord member at a position corresponding to the two columns.

4. A building frame in which a portal frame and a general frame are connected, The gate-shaped frame is A ladder beam having an upper chord, a lower chord, and a plurality of vertical members connecting the upper chord and the lower chord; A ladder-type column includes at least two columns and a plurality of cross members connecting the two columns, and supports the ladder-type beam to form a portal frame together with the ladder-type beam. A beam forming the general frame is connected to the upper chord or the lower chord, A building frame, characterized in that the columns forming the ladder-shaped columns and the columns forming the general frame have cross sections of the same size.

5. A building frame in which a portal frame and a general frame are connected, The gate-shaped frame is A ladder beam having an upper chord, a lower chord, and a plurality of vertical members connecting the upper chord and the lower chord; A ladder-type column includes at least two columns and a plurality of cross members connecting the two columns, and supports the ladder-type beam to form a portal frame together with the ladder-type beam. A beam forming the general frame is connected to the upper chord or the lower chord, A building structure, characterized in that a portion of the space between the upper chord and the lower chord is provided for the passage of piping.

6. The gate-shaped frame is a frame forming a garage or a frame forming a store, The building structure according to any one of claims 1 to 5, characterized in that the lower chord member also serves as a wind-resistant frame.

Images