Architecture Construction

Abstract

To obtain a frame structure that can secure a wide opening.SOLUTION: A frame structure comprises a first beam 30 having a pair of first upper beam member 32 and first lower beam member 34 facing each other in the vertical direction, a second beam 50 having a pair of second upper beam member 52 and second lower beam member 54 facing each other in the vertical direction and having lower rigidity than the first beam 30, and a reinforcing frame 90 having a strut 92 that connects the first upper beam member 32 and the first lower beam member 34, an upper support beam 94 that is rigidly joined to an upper end portion of the strut 92 via the first upper beam member 32 and connects the first upper beam member 32 and the second upper beam member 52, and a lower support beam 96 that is rigidly joined to the lower end of the strut 92 via the first lower beam member 34 and connects the first lower beam member 34 and the second lower beam member 54.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] BACKGROUND ART Truss beams are known that include a pair of upper and lower chord members that face each other in the vertical direction, and diagonal members that connect the pair of upper and lower chord members (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-261102 [Patent Document 2] Japanese Patent Application Publication No. 2017-198028 Summary of the Invention [Problem to be solved by the invention]

[0004] In a truss beam, rigidity is increased by connecting a pair of upper and lower chords with diagonal members.

[0005] However, in a truss beam, since a diagonal member is present between a pair of upper and lower chord members, it is difficult to ensure a wide opening between the pair of upper and lower chord members.

[0006] In consideration of the above, an object of the present invention is to provide a frame structure that can ensure a wide opening. [Means for solving the problem]

[0007] According to the first aspectThe structural frame comprises a first beam having a pair of first upper beam members and first lower beam members facing each other in the vertical direction, a second beam having a pair of second upper beam members and second lower beam members facing each other in the vertical direction and having lower rigidity than the first beam, a support column connecting the first upper beam member and the first lower beam member, an upper support beam rigidly connected to the upper end of the support column via the first upper beam member and connecting the first upper beam member and the second upper beam member, and a lower support beam rigidly connected to the lower end of the support column via the first lower beam member and connecting the first lower beam member and the second lower beam member.

[0008] First aspect According to the frame structure, the first beam has a pair of first upper beam members and a pair of first lower beam members that face each other in the vertical direction. The second beam has a pair of second upper beam members and a pair of second lower beam members that face each other in the vertical direction, and has lower rigidity than the first beam.

[0009] The reinforced frame has a support column, an upper support beam, and a lower support beam. The support column connects the first upper beam member and the first lower beam member. The upper support beam is rigidly connected to the upper end of the support column via the first upper beam member, connecting the first upper beam member and the second upper beam member. This allows the second upper beam member to be supported by the first beam via the upper support beam. Therefore, deflection of the second upper beam member is reduced.

[0010] The lower support beam is rigidly connected to the lower end of the column via the first lower beam member, connecting the first lower beam member and the second lower beam member. This allows the second lower beam member to be supported by the first beam via the lower support beam. Therefore, deflection of the second lower beam member is reduced.

[0011] Therefore, in the present invention, the diagonal members connecting the second upper beam member and the second lower beam member can be reduced or eliminated, thereby forming a wide opening between the second upper beam member and the second lower beam member.

[0012] Furthermore, as described above, the deflection of the second upper beam member and the second lower beam member is reduced, so the beam width of the second upper beam member and the second lower beam member can be reduced, and therefore the opening between the second upper beam member and the second lower beam member can be further widened.

[0013] Furthermore, by lowering the beam height of the second upper beam member and the second lower beam member, the lines of the second upper beam member and the second lower beam member become thinner when viewed from the side of the second beam, thereby improving the design of the second beam.

[0014] According to the second aspect The frame structure is According to the first aspect The frame structure comprises an upper torsional resistance member having at least one of a horizontal brace and a slab, connecting the first upper beam member and the second upper beam member, and a lower torsional resistance member having at least one of a horizontal brace and a slab, connecting the first lower beam member and the second lower beam member.

[0015] Second aspect According to the frame structure described above, the upper torsion-resisting member has at least one of a horizontal brace and a slab and connects the first upper beam member and the second upper beam member. The lower torsion-resisting member has at least one of a horizontal brace and a slab and connects the first lower beam member and the second lower beam member. These upper and lower torsion-resisting members reduce torsion of the first beam.

[0016] Therefore, in the present invention, it is possible to form a wide opening between the second upper beam member and the second lower beam member while reducing the twisting of the first beam member.

[0017] According to the third aspect The frame structure is First aspect or According to the second aspect The frame structure includes a connecting member that connects the second upper beam member and the second lower beam member at a position opposite the support pillar.

[0018] Third aspect According to the frame structure of the present invention, the connecting member connects the second upper beam member and the second lower beam member at a position opposite the support column. This allows the upper support beam and the lower support beam to cooperate to resist deflection of the second upper beam member and the second lower beam member, further reducing deflection of the second upper beam member and the second lower beam member. Therefore, the beam mass of the second upper beam member and the second lower beam member can be further reduced.

[0019] Furthermore, since the load on the upper support beams and the lower support beams is reduced, the beam mass of the upper support beams and the lower support beams can also be reduced. [Effects of the Invention]

[0020] As described above, according to the present invention, a frame structure capable of ensuring a wide opening can be obtained. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view showing a connecting passage to which a frame structure according to one embodiment is applied; [Figure 2] FIG. 2 is an elevation view of the first frame shown in FIG. [Figure 3] FIG. 2 is an elevation view of the second frame shown in FIG. [Figure 4] 2 is a plan view of the first upper beam member and the second upper beam member shown in FIG. 1. FIG. [Figure 5] 2 is a planar cross section of the first lower beam member and the second lower beam member shown in FIG. 1. [Figure 6] FIG. 2 is a cross-sectional view of the communication passage shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, a frame structure according to one embodiment will be described with reference to the drawings.

[0023] (Frame structure) 1 shows a connecting passage 10 to which the frame structure according to this embodiment is applied. The connecting passage (bridge) 10 connects, for example, structures (not shown). The connecting passage 10 includes a first frame 20 and a second frame 40 facing each other, and a plurality of reinforcing frames 90 connecting the first frame 20 and the second frame 40.

[0024] The arrow X shown in each figure indicates the longitudinal direction of the communication passage 10 (the material axis direction of the first beam 30 and the second beam 50). The arrow Y indicates the width direction of the communication passage 10 (the opposing direction of the first beam 30 and the second beam 50). The arrow Z indicates the height direction of the communication passage 10 (the up-down direction).

[0025] (first frame) As shown in Fig. 2, the first frame 20 is a rigid frame having a pair of first columns 22 and a first beam 30. The pair of first columns 22 are formed of steel members (steel columns) such as steel pipes. The pair of first columns 22 are also arranged with a gap between them in the longitudinal direction of the connecting passage 10. A first beam 30 made of steel is erected on the pair of first columns 22.

[0026] The first beam 30 is a truss beam having a pair of first upper beam members 32 and first lower beam members 34, and a plurality of diagonal members 36. The pair of first upper beam members 32 and first lower beam members 34 are formed from steel members (steel beams) such as H-shaped steel, and are arranged facing each other in the vertical direction. Each of the first upper beam members 32 and first lower beam members 34 functions as an upper chord member and a lower chord member of the truss beam.

[0027] The first upper beam member 32 and the first lower beam member 34 are erected on a pair of first columns 22, and both ends of the first upper beam member 32 and the first lower beam member 34 are rigidly joined to the pair of first columns 22. The pair of first upper beam member 32 and first lower beam member 34 are connected by a plurality of diagonal members 36 and struts 92, which will be described later. The diagonal members 36 are an example of connecting members (first connecting members).

[0028] The diagonal members 36 are formed of steel members such as H-shaped steel beams. These diagonal members 36 are arranged diagonally between adjacent columns 92, with their upper ends joined to the first upper beam member 32 by pins and their lower ends joined to the first lower beam member 34 by pins. In this embodiment, a pair of diagonal members 36 are arranged in an X-shape between adjacent columns 92.

[0029] The type of the first beam 30 is not limited to a specific one, and may be a Howe truss, a Warren truss, a Vierendeel truss, or the like.

[0030] (Second frame) As shown in Fig. 3, the second frame 40 is a rigid frame having a pair of second columns 42 and a second beam 50. The pair of second columns 42 are formed of steel members (steel columns) such as steel pipes. The pair of second columns 42 are also arranged with a gap between them in the longitudinal direction (direction of arrow X) of the connecting passage 10. A first beam 30 made of steel is erected on the pair of first columns 22.

[0031] The second beam 50 has a pair of second upper beam members 52 and second lower beam members 54. The pair of second upper beam members 52 and second lower beam members 54 are formed from steel members (steel beams) such as H-shaped steel, and are arranged facing each other in the vertical direction. Furthermore, each second upper beam member 52 and second lower beam member 54 is erected on a pair of second columns 42, and both ends thereof are rigidly joined to the pair of second columns 42, respectively.

[0032] In addition, since the second beam 50 does not have a diagonal member connecting the second upper beam member 52 and the second lower beam member 54, it has lower rigidity (vertical rigidity) than the first beam 30.

[0033] 1, a pair of first pillars 22 and a pair of second pillars 42 face each other in the width direction (arrow Y direction) of the communication passage 10. The facing first pillars 22 and second pillars 42 are connected by an upper cross beam 60 and a lower cross beam 62.

[0034] The upper cross beam 60 and the lower cross beam 62 are formed of steel members (steel beams) such as H-shaped steel, and are arranged facing each other in the vertical direction. The upper cross beam 60 and the lower cross beam 62 are erected on the opposing first column 22 and second column 42, and both ends thereof are rigidly joined to the first column 22 and the second column 42, respectively.

[0035] The first upper beam member 32 and the second upper beam member 52 face each other in the width direction of the connecting passageway 10. Both end portions of this second upper beam member 52 are rigidly joined to both end portions of the first upper beam member 32 via upper cross beams 60. As shown in FIG. 4 , the first upper beam member 32, the second upper beam member 52, and the upper cross beams 60 form an upper planar frame 70 that is rectangular in plan view. This upper planar frame 70 is provided with a plurality of horizontal braces 72, which will be described later.

[0036] As shown in Fig. 1, the first lower beam member 34 and the second lower beam member 54 face each other in the width direction of the connecting passageway 10. Both end portions of this second lower beam member 54 are rigidly joined to both end portions of the first lower beam member 34 via lower cross beams 62. As shown in Fig. 5, the first lower beam member 34, the second lower beam member 54, and the lower cross beams 62 form a lower planar frame 80 that is rectangular in plan view. A slab 82, which will be described later, is provided on this lower planar frame 80.

[0037] (reinforcement frame) 1, the multiple reinforcing frames 90 function as support frames that transmit the load (vertical load) of the second beam 50 to the first beam 30 and support the second beam 50 on the first beam 30. These reinforcing frames 90 are arranged at intervals in the material axis direction of the first beam 30 and the second beam 50. Note that at least one reinforcing frame 90 is sufficient.

[0038] 6, the reinforcing frame 90 has a C-shape with an opening on the second beam 50 side when viewed from the material axis direction of the first beam 30 and the second beam 50. This reinforcing frame 90 has a support column 92, an upper support beam 94, and a lower support beam 96.

[0039] The pillar 92 is formed of a steel member (steel column) such as an H-shaped steel. The pillar 92 is disposed in the vertical direction between the first upper beam 32 and the first lower beam 34, and connects the first upper beam 32 and the first lower beam 34. The upper end of the pillar 92 is rigidly joined to the first upper beam 32, and the lower end of the pillar 92 is rigidly joined to the first lower beam 34.

[0040] The upper support beam 94 is formed of a steel member (steel column) such as an H-shaped steel. The upper support beam 94 is disposed between the first upper beam member 32 and the second upper beam member 52 along the width direction of the connecting passage 10, and connects the first upper beam member 32 and the second upper beam member 52.

[0041] One end of the upper support beam 94 is rigidly connected to the joint (joint) between the first upper beam member 32 and the support column 92. In other words, one end of the upper support beam 94 is rigidly connected to the upper end of the support column 92 via the first upper beam member 32. In addition, the other end of the upper support beam 94 is connected (rigidly or pin-jointed) to the second upper beam member 52. The second upper beam member 52 is supported by the first upper beam member 32 via this upper support beam 94.

[0042] The lower support beam 96 is formed of a steel member (steel column) such as an H-shaped steel. The lower support beam 96 is disposed between the first lower beam member 34 and the second lower beam member 54 along the width direction of the connecting passage 10, and connects the first lower beam member 34 and the second lower beam member 54.

[0043] One end of the lower support beam 96 is rigidly joined to the joint (joint) between the first lower beam member 34 and the support pillar 92. In other words, one end of the lower support beam 96 is rigidly joined to the lower end of the support pillar 92 via the first lower beam member 34. In addition, the other end of the lower support beam 96 is joined (rigidly joined or pin joined) to the second lower beam member 54. The second lower beam member 54 is supported by the first lower beam member 34 via this lower support beam 96.

[0044] (Connecting material) The second upper beam member 52 and the second lower beam member 54 are connected by a connecting member 100. The connecting member 100 is formed of steel, such as a flat bar or an H-shaped steel. The connecting member 100 is disposed between the second upper beam member 52 and the second lower beam member 54 in the vertical direction, and connects the second upper beam member 52 and the second lower beam member 54.

[0045] The connecting members 100 face the support posts 92 in the width direction of the connecting passage 10, and their upper ends are joined (pin-jointed) to the first upper beam member 32, and their lower ends are joined (pin-jointed) to the first lower beam member 34. As shown in Figure 3, rectangular openings 56 are formed between adjacent connecting members 100, spanning the second upper beam member 52 and the second lower beam member 54.

[0046] (Horizontal brace) As shown in Fig. 4, the upper planar frame 70 is provided with a plurality of horizontal braces 72. The horizontal braces 72 are arranged diagonally between adjacent upper support beams 94, and connect the first upper beam member 32 and the second upper beam member 52. These horizontal braces 72 increase the rigidity (in-plane rigidity and out-of-plane rigidity) of the upper planar frame 70. In addition, a roof material (not shown) is provided on the upper planar frame 70.

[0047] The horizontal brace 72 is an example of an upper torsion resistance member.

[0048] (Slab) As shown in Fig. 5, a reinforced concrete slab 82 is provided on the lower plane frame 80. The slab 82 is made of reinforced concrete and forms the floor of the connecting passage 10. The slab 82 increases the rigidity (in-plane rigidity and out-of-plane rigidity) of the lower plane frame 80.

[0049] 1 to 4, the slab 82 is not shown. The slab 82 is an example of a lower torsion resistance member.

[0050] For example, a wall (exterior wall) 38 is provided on the first beam 30. On the other hand, an opening 56 of the second beam 50 is provided with a glass window or the like (not shown).

[0051] (action) Next, the operation of this embodiment will be described.

[0052] 1, the first beam 30 has a pair of first upper beam members 32 and first lower beam members 34 that face each other in the vertical direction. The second beam 50 has a pair of second upper beam members 52 and second lower beam members 54 that face each other in the vertical direction, and has lower rigidity than the first beam 30. The first beam 30 and the second beam 50 are connected via a plurality of reinforcing frames 90.

[0053] 6, the reinforcing frame 90 has a support column 92, an upper support beam 94, and a lower support beam 96. The support column 92 connects the first upper beam member 32 and the first lower beam member 34.

[0054] The upper support beam 94 is rigidly connected to the upper end of the column 92 via the first upper beam member 32, connecting the first upper beam member 32 and the second upper beam member 52. This allows the second upper beam member 52 to be supported by the first beam 30 via the upper support beam 94. Therefore, deflection of the second upper beam member 52 is reduced.

[0055] Furthermore, the lower support beam 96 is rigidly joined to the lower end of the support column 92 via the first lower beam member 34, connecting the first lower beam member 34 and the second lower beam member 54. This allows the second lower beam member 54 to be supported by the first beam 30 via the lower support beam 96. Therefore, deflection of the second lower beam member 54 is reduced.

[0056] 1 and 3, the diagonal members connecting the second upper beam member 52 and the second lower beam member 54 can be reduced or eliminated. Therefore, a wide opening 56 can be formed between the second upper beam member 52 and the second lower beam member 54.

[0057] Furthermore, as described above, the deflection of the second upper beam member 52 and the second lower beam member 54 is reduced, so that the beam height of the second upper beam member 52 and the second lower beam member 54 can be reduced. Therefore, the opening 56 between the second upper beam member 52 and the second lower beam member 54 can be further widened.

[0058] Furthermore, by lowering the beam height of the second upper beam member 52 and the second lower beam member 54, the lines of the second upper beam member 52 and the second lower beam member 54 become thinner when viewed from the side of the second beam 50. Therefore, the design of the second beam 50 can be improved.

[0059] 1, the connecting member 100 connects the second upper beam member 52 and the second lower beam member 54 at a position opposite the support column 92 of the reinforcing frame 90. This allows the upper support beam 94 and the lower support beam 96 to cooperate to resist deflection of the second upper beam member 52 and the second lower beam member 54, further reducing deflection of the second upper beam member 52 and the second lower beam member 54. Therefore, the beam stiffness of the second upper beam member 52 and the second lower beam member 54 can be further reduced.

[0060] Furthermore, since the load on the upper support beams 94 and the lower support beams 96 is reduced, the beam thickness of the upper support beams 94 and the lower support beams 96 can also be reduced.

[0061] Here, as shown in Figure 6, if the first beam 30 supports the second beam 50 via multiple reinforcing frames 90, a torsional moment M acts on the first beam 30, which may cause the first beam 30 to twist.

[0062] To address this issue, in this embodiment, as shown in Figure 4, multiple horizontal braces 72 are provided on the upper plane frame 70. The multiple horizontal braces 72 connect the first upper beam member 32 and the second upper beam member 52. These horizontal braces 72 resist the torsional moment M, thereby reducing the torsion of the first beam 30.

[0063] 5, the lower planar frame 80 is provided with a slab 82. The slab 82 connects the first lower beam member 34 and the second lower beam member 54. The slab 82 resists the torsional moment M, thereby further reducing the torsion of the first beam 30.

[0064] In this manner, in this embodiment, a wide opening 56 can be formed between the second upper beam member 52 and the second lower beam member 54 while reducing twisting of the first beam 30 and the second beam 50 .

[0065] Furthermore, by connecting the opposing first column 22 and second column 42 with the upper cross beam 60 and the lower cross beam 62, the torsion of the first beam 30 and the second beam 50 can be further reduced.

[0066] (Variation) Next, a modification of the above embodiment will be described.

[0067] In the above embodiment, the upper torsion-resistant member is the horizontal brace 72. However, the upper torsion-resistant member can include at least one of the horizontal brace 72 and a slab. Similarly, the lower torsion-resistant member can include at least one of the horizontal brace and a slab 82. Furthermore, the upper torsion-resistant member and the lower torsion-resistant member may be provided as needed and may be omitted as appropriate.

[0068] In the above embodiment, the connecting member 100 is provided on the second beam 50. However, the connecting member 100 may be provided as needed and may be omitted as appropriate.

[0069] In addition, in the above embodiment, the first beam 30 is a truss beam. However, the first beam 30 is not limited to a truss beam. The first beam 30 only needs to have higher rigidity (vertical rigidity) than the second beam 50. For example, the diagonal member 36 may be omitted from the first beam 30, and the beam thickness of the first upper beam member 32 and the first lower beam member 34 may be increased, or a bearing wall or the like may be provided between the first upper beam member 32 and the first lower beam member 34.

[0070] Furthermore, the frame structure according to the above embodiment is not limited to the connecting passage 10 and can be applied to various frames.

[0071] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it goes without saying that the present invention can be implemented in various forms as long as it does not deviate from the gist of the present invention. [Explanation of symbols]

[0072] 30 First beam 32 First upper beam material 34 First lower beam material 50 Second beam 52 Second upper beam material 54 Second lower beam material 72 Horizontal brace (upper torsion resistance member) 82 Slab (lower torsional resistance member) 90 Reinforcement frame 92 Pillar 94 Upper support beam 96 Lower support beam 100 Connecting material

Claims

1. a first beam having a pair of first upper beam members and first lower beam members facing each other in the vertical direction; A second beam having a pair of second upper beam members and second lower beam members facing each other in the vertical direction and having lower rigidity than the first beam; a reinforcing frame having a support pillar connecting the first upper beam member and the first lower beam member, an upper support beam rigidly connected to the upper end of the support pillar via the first upper beam member and protruding from the first upper beam member to support the second upper beam member in a cantilevered manner, and a lower support beam rigidly connected to the lower end of the support pillar via the first lower beam member and protruding from the first lower beam member to support the second lower beam member in a cantilevered manner; A structural frame comprising:

2. An upper torsion-resistant member having at least one of a horizontal brace and a slab, connecting the first upper beam member and the second upper beam member; a lower torsion-resisting member having at least one of a horizontal brace and a slab, connecting the first lower beam member and the second lower beam member; The frame structure according to claim 1 .

3. A connecting member is provided that connects the second upper beam member and the second lower beam member at a position opposite to the support pillar. The frame structure according to claim 1 or 2.

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