Rigid Structure

Abstract

To integrate a pair of stiffeners by exhibiting a stiffening effect for suppressing buckling of a compression steel material while reducing an installation space and simplifying a structure.SOLUTION: A stiffening structure comprises: a compression steel material 5 that receives a compression force; and a pair of wooden stiffeners 6 arranged to hold the compression steel material 5 between both sides in a direction orthogonal to the longitudinal direction of the compression steel material 5. The stiffeners 6 are provided with a stiffening / integration function part 7 having both a stiffening function part that exhibits a stiffening effect of suppressing buckling of the compression steel material 5 by the stiffeners 6 and an integration function part that integrates the stiffeners 6 without receiving an axial force of the compression steel material 5.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a stiffening structure provided with a compression steel material that receives a compressive force and a stiffening material that suppresses buckling of the compression steel material.

Background Art

[0002] There is known a structure in which the above-described stiffening structure is applied to a stiffening brace. In this stiffening structure, brace steel materials are disposed obliquely within the column-beam framework of a building, and a pair of stiffening materials are arranged so as to sandwich the brace steel materials from both sides in a direction orthogonal to the longitudinal direction of the brace steel materials. By using wood as the stiffening material, weight reduction of the stiffening brace is achieved (see, for example, Patent Document 1).

[0003] In the stiffening structure described in this Patent Document 1, a receiving hole that penetrates from one end portion to the entire length of the other end portion is formed inside the stiffening material, and the brace steel material is disposed within the receiving hole. Thereby, while suppressing buckling of the brace steel material in a direction (weak axis direction) orthogonal to the longitudinal direction by the pair of stiffening materials, the brace steel material is made movable in the longitudinal direction with respect to the stiffening material, and the stiffening material does not bear the axial force of the brace steel material, and a stiffening effect of suppressing buckling of the brace steel material by the stiffening material is exhibited.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the stiffening structure described in Patent Document 1, a bolt is provided that penetrates a pair of stiffening members, and this bolt integrates the pair of stiffening members. However, in order to arrange the bolt so that it penetrates the pair of stiffening members, holes must also be formed in the bracing steel material for the bolt to pass through, which may lead to increased complexity of the structure and higher costs.

[0006] Furthermore, in the stiffening structure described in Patent Document 1, members such as housing holes for exerting a stiffening effect that suppresses buckling of the brace steel material and members such as bolts for integrating a pair of stiffening materials are provided separately. As a result, the installation space and configuration of each member must be secured separately, leading to an increase in installation space and complexity of the configuration.

[0007] In light of these circumstances, the main objective of the present invention is to provide a stiffening structure that reduces installation space and simplifies the configuration, while also exhibiting a stiffening effect that suppresses buckling of compression steel members subjected to compressive force, and that also enables the integration of a pair of stiffening members. [Means for solving the problem]

[0008] The first characteristic configuration of the present invention is that it comprises a compression steel material that is subjected to a compressive force, and a pair of wooden stiffeners arranged to sandwich the compression steel material from both sides in a direction perpendicular to the longitudinal direction of the compression steel material. The aforementioned compression steel material is provided with an elongated shape that is long in the longitudinal direction of the compression steel material. Or a circular shape having an inner diameter that is a predetermined amount larger than the outer diameter of the fixed part. It is provided with a through-hole and fixing parts that pass through the through-hole and fix stiffening members to both ends. 、 The aforementioned through-holes and fixing portions are arranged in multiple locations along the longitudinal direction of the compressed steel material, between the two end portions. It's at a single point.

[0009] According to this configuration, a stiffening and integration function unit is provided, which has both a stiffening function unit and an integration function unit. Therefore, the pair of stiffening members does not bear the axial force of the compression steel, and the stiffening effect that suppresses buckling of the compression steel by the pair of stiffening members can be appropriately exerted, while also integrating the pair of stiffening members. Moreover, since only a stiffening and integration function unit is provided, rather than having a stiffening function unit and an integration function unit separately, the installation space can be reduced and the structure can be simplified.

[0011] According to this configuration, the reinforcing and integrating function can be made up of simple components consisting of a through-hole and a fixing part, thus further simplifying the structure.

[0012] A second characteristic feature of the present invention is that each of the longitudinal ends of the compressed steel material is provided with an end through-hole and an end fixing portion. One side of the end through-hole is formed in a horizontally elongated shape that is long in the longitudinal direction of the compressed steel material, and the other side of the end through-hole is formed in a circular shape having an inner diameter equal to the outer diameter of the end fixing portion. A third characteristic feature of the present invention is that the fixing portion includes a coupler member fixed to the stiffening material, and a bolt and nut that are inserted into the coupler member and fastened together. A fourth characteristic feature of the present invention is that the stiffeners are arranged in pairs in a manner that aligns with the plane direction of the compressed steel material, which is made of flat steel material, and the invention provides two sets of stiffeners that sandwich the compressed steel material from both sides. This invention 5 The feature configuration is, The aforementioned compression steel material has an elongated shape that is long in the longitudinal direction. Through hole In a compressed steel material made of flat steel, in the direction along the plane The width is in the fixed part. In compressed steel, the direction along the plane The width is set to be approximately the same as the fixing part that passes through the through hole. Direction along the plane in compressed steel The issue lies in the restrictions on movement within the area.

[0013] With this configuration, by restricting the vertical movement of the fixing part within the through-hole, it is possible to suppress the acting of unnecessary force on the stiffening material, thereby effectively exerting only the stiffening effect.

[0014] For example, when a tensile force acts on a compression steel member due to an earthquake or the like, after the compression steel member yields and plastifies, if a compressive force acts, there is a possibility that the compression steel member may buckle not only in the direction orthogonal to the plane direction of the compression steel member (weak axis direction) but also in the direction along the plane direction of the compression steel member (strong axis direction). Since the movement of the compression steel member in the direction orthogonal to the plane direction of the compression steel member (weak axis direction) is restricted by a pair of stiffening members sandwiching the compression steel member from both sides, the compression steel member may move in the direction along the plane direction of the compression steel member (vertical direction, strong axis direction). Therefore, according to this configuration, by restricting the movement of the fixing portion in the vertical direction within the through-hole portion, the movement of the compression steel member in the direction along the plane direction of the compression steel member (vertical direction, strong axis direction) at the fixing portion is restricted, and buckling of the compression steel member can be appropriately prevented.

Brief Description of the Drawings

[0015] [Figure 1] Front view of the structural surface in the first embodiment [Figure 2] (A) Longitudinal sectional view taken along line II-II in FIG. 1, (A) Longitudinal sectional view taken along line B-B in FIG. 2(A) [Figure 3] (A) Diagram showing the joint portion between the stiffening brace and the beam in the first embodiment, (B) Cross-sectional view of the stiffening brace at the joint portion between the stiffening brace and the beam in the first embodiment [Figure 4] Cross-sectional view of the stiffening brace in the second embodiment [Figure 5] Cross-sectional view of the stiffening brace in the third embodiment [Figure 6] Cross-sectional view of the stiffening brace in the fourth embodiment [Figure 7] Cross-sectional view of the stiffening brace in the fifth embodiment [Figure 8] Diagram showing the joint portion between the stiffening brace and the beam in the sixth embodiment [Figure 9] Diagram showing the joint portion between the stiffening brace and the beam in the sixth embodiment <000….097>Diagram showing the joint portion between the stiffening brace and the beam in the sixth embodiment

Modes for Carrying Out the Invention

[0016] An embodiment in which the stiffening structure according to the present invention is applied to a stiffening brace will be described with reference to the drawings. [First Embodiment] This stiffening brace 1 is applicable to various buildings such as hotels. As shown in Figure 1, the building has a column-beam frame with columns 3 and beams 4, and the stiffening brace 1 is positioned on the frame surface enclosed by the upper and lower beams 4 and the left and right columns 3. In this way, the stiffening brace 1 can be placed in partitions between rooms in a building.

[0017] As shown in Figure 1, the stiffening braces 1 are provided in pairs on the left and right sides of the partition section 2, with each pair of stiffening braces 1 having its upper end joined to the left-right end portion of the upper beam 4 and its lower end joined to the left-right central portion of the lower beam 4, in an inclined position.

[0018] As shown in Figure 2, the stiffening brace 1 is equipped with a brace steel material 5 (corresponding to a compression steel material) and a wooden stiffening member 6. The brace steel material 5 is made of a flat steel material having a predetermined thickness, and the stiffening member 6 is made of, for example, a square-shaped wooden material. The stiffening members 6 are provided in pairs so as to sandwich the brace steel material 5 from both sides in a direction perpendicular to the longitudinal direction of the brace steel material 5 and facing the side surface (left and right direction in Figure 2(A)). In this embodiment, two stiffening members 6 are arranged adjacent to each other in the vertical direction (up and down direction in Figure 2(A)) along the side surface of the brace steel material 5, and there are two pairs of stiffening members 6 that sandwich the brace steel material 5 from both sides, for a total of four stiffening members 6.

[0019] In this way, the stiffening brace 1 is provided as an exposed stiffening brace 1 in the partition section 2, since the area around the bracing steel material 5 is covered with a wooden stiffening material 6.

[0020] As shown in Figure 2, the stiffening brace 1 is equipped with a stiffening / integration function section 7 that has both a stiffening function section that exerts a stiffening effect by suppressing buckling of the brace steel 5 with a pair of stiffening members 6, and an integration function section that integrates the pair of stiffening members 6.

[0021] As shown in Figure 2, the stiffening and integration functional section 7 is provided with a through-hole 71 in the brace steel 5 and fixing sections 72 that pass through the through-hole 71 and fix the stiffening members 6 to both ends. In this embodiment, there are two sets of stiffening members 6 that sandwich the brace steel 5 from both sides, so there are two through-holes 71 and two fixing sections 72 to correspond to each of the two sets of stiffening members 6.

[0022] Although not shown in Figure 1, multiple through-holes 71 and fixing portions 72 are provided in the longitudinal direction of the brace steel material 5 at predetermined intervals (for example, at a constant pitch).

[0023] As shown in Figure 2, the fixing portion 72 is equipped with a pair of coupler members 73 fixed to each of the pair of stiffening members 6, and a high-tension bolt 74 and nut 75 that connect the pair of coupler members 73 to each other.

[0024] The outer side portion 61 of the stiffener 6 in the direction perpendicular to the longitudinal direction of the brace steel 5 (left-right direction in Figure 2(A)) is provided with a circular recess 62 that is recessed inward, and a circular through-hole 63 for the stiffener is provided in the center of the recess 62, which penetrates the stiffener 6. The diameter of the through-hole 63 for the stiffener is set to be smaller by a predetermined amount (for example, 0.5 mm) than the outer diameter of the circular coupler member 73, and each of the pair of coupler members 73 is fixed to the stiffener 6 with its end passing through the through-hole 63 for the stiffener. The length of the coupler member 73 in the longitudinal direction is set to be longer by a predetermined amount than the length of the through-hole 63 for the stiffener, and by attaching the outer end of the coupler member 73 to the bottom of the recess 62, the inner end of the coupler member 73 is provided to protrude into the through-hole 71 by a predetermined amount.

[0025] When fixing the coupler member 73 to the stiffener 6, for example, a threaded portion is formed on the outer circumference of the coupler member 73, and by screwing the threaded portion into the inner wall of the stiffener through-hole 63 of the stiffener 6, the coupler member 73 can be fixed to the stiffener 6 in a state where it passes through the stiffener through-hole 63. Alternatively, even without forming a threaded portion, the coupler member 73 can be fixed to the stiffener 6 in a state where it passes through the stiffener through-hole 63 by press-fitting the coupler member 73 into the stiffener 6.

[0026] Each of the pair of coupler members 73 is arranged such that its outer end is exposed in the recess 62 and its inner end is located in the through hole 71. The pair of coupler members 73 pass through the through hole 71 with their inner ends in contact with each other. The inside of each coupler member 73 is formed in a cylindrical shape, and this internal space forms an insertion space that extends over the entire length of the pair of coupler members 73. Since both ends of this insertion space are exposed in the recess 62 of the stiffener 6, the pair of coupler members 73 are joined by inserting a high-tension bolt 74 into the insertion space and fastening it with a nut 75.

[0027] Thus, the stiffening and integration function unit 7 is equipped with an integration function unit that integrates a pair of stiffening members 6 by joining a pair of coupler members 73 fixed to the stiffening member 6.

[0028] As shown in the lower part of Figure 2(B), the through-hole portion 71 is formed in a horizontally elongated shape, which is longer in the longitudinal direction of the brace steel material 5 (left-right direction in Figure 2(B)) than the outer diameter of the coupler member 73 in the fixing portion 72. The vertical width of the through-hole portion 71 is set to be approximately the same as the vertical width (outer diameter) of the coupler member 73 in the fixing portion 72, thereby restricting the vertical movement of the coupler member 73 in the fixing portion 72 that passes through the through-hole portion 71. The coupler member 73 is allowed to move a predetermined amount in the horizontal direction of the through-hole portion 71, but its movement in the vertical direction of the through-hole portion 71 is restricted.

[0029] Thus, as shown in Figure 2, the stiffening and integration function unit 7 allows a predetermined amount of movement of the coupler member 73 in the lateral direction of the through hole 71, thereby allowing the stiffening member 6 to move relative to the brace steel 5 in the longitudinal direction of the brace steel 5, and each of the pair of stiffening members 6 does not bear the axial force of the brace steel 5. Each of the pair of stiffening members 6 is arranged such that its inner side surface portion 64 in a direction perpendicular to the longitudinal direction of the brace steel 5 (left-right direction in Figure 2(A)) faces the surface of the brace steel 5. Even if the brace steel 5 attempts to buckle, the inner side surface portion 64 of the stiffening member 6 abuts against the side surface of the brace steel 5, thereby suppressing the buckling of the brace steel 5. Therefore, the stiffening and integration function unit 7 is equipped with a stiffening function that exhibits a stiffening effect that suppresses the buckling of the brace steel 5 by the pair of stiffening members 6 without bearing the axial force of the brace steel 5.

[0030] In this embodiment, as shown in Figure 2(A), the stiffener 6 is arranged to form a small gap between its inner surface portion 64 and the brace steel 5. This allows the stiffener 6 to move smoothly in its longitudinal direction relative to the brace steel 5, making it easier to achieve a state where the stiffener 6 does not bear the axial force of the brace steel 5. Incidentally, the size of the gap between the inner surface portion 64 of the stiffener 6 and the brace steel 5 can be changed as appropriate. Alternatively, the stiffener 6 can be arranged so that its inner surface portion 64 and the brace steel 5 are in contact without any gap.

[0031] In this embodiment, the coupler member 73 is provided as a pair, divided into left and right halves. However, it can also be constructed as a single, integrated unit without being divided into left and right halves.

[0032] Based on Figure 3, the connection configuration for joining the upper end of the stiffening brace 1 to the beam 4 will be explained. Figure 3 shows the connection configuration for joining the upper end of the stiffening brace 1 located on the right side in Figure 1 to the beam 4. However, the connection configuration for joining the upper end of the stiffening brace 1 located on the left side in Figure 1 to the beam 4 is the same, so only the stiffening brace 1 located on the right side will be explained using Figure 3.

[0033] As shown in Figure 3, at the upper end of the stiffening brace 1, there is no stiffening material 6, and an exposed portion 11 is provided where a predetermined amount of brace steel material 5 is exposed. A plate body 12 is provided on the lower surface of the lower flange 41 of the beam 4. At the exposed portion 11, the first welding portion 13, which is at the upper end of the brace steel material 5, the second welding portion 14, which is at the lower end of the brace steel material, and the third welding portion 15, which is at the longitudinal end of the brace steel material 5, are the welding targets for the beam 4. Thus, the first to third welding portions 13 to 15 at the exposed portion 11 are welded to the plate body 12 and the lower surface of the lower flange 41 of the beam 4, using the plate body 12 as a backing material.

[0034] The end portions of the stiffener 6 are provided with end integration sections 16 for integrating a pair of stiffeners 6. The end integration section 16 is provided with end through-holes 17 provided in the brace steel 5, and fasteners such as bolts 18 and nuts 19 that pass through the end through-holes 17 to fix the stiffeners 6 to both ends.

[0035] In the stiffening member 6, the location where the end integration portion 16 is to be installed is provided with a circular end recess 65 that is recessed inward, and in the center of the end recess 65 is provided with a circular end through hole 66 that penetrates the stiffening member 6. A bolt 18 is installed so as to penetrate both the end through hole 66 formed in the stiffening member 6 and the end through hole 17 formed in the brace steel member 5, and the pair of stiffening members 6 are integrated by fastening the bolt 18 with a nut 19.

[0036] Incidentally, Figure 3 shows an example in which fasteners such as bolts 18 and nuts 19 are used as the end-piece integrated section 16. However, for example, similar to the stiffening and integration function section 7, the pair of stiffening members 6 can also be integrated using fixing parts 72 such as coupler members 73, high-tension bolts 74, and nuts 75.

[0037] As shown in Figure 3(B), the end through-hole 17 formed in the brace steel material 5 is formed in a horizontally elongated shape that is longer in the longitudinal direction of the brace steel material 5 than the outer diameter of the bolt 18, allowing the bolt 18 to move by a predetermined amount in the lateral direction of the end through-hole 17. This allows the stiffener 6 to move relative to the brace steel material 5 in the longitudinal direction of the brace steel material 5, similar to the relationship between the through-hole 71 and the coupler member 73 in the stiffening and integration functional part 7 shown in Figure 2, by allowing the bolt 18 to move by a predetermined amount in the lateral direction of the end through-hole 17, and the pair of stiffeners 6 are not made to bear the axial force of the brace steel material 5.

[0038] The following describes the connection configuration for joining the lower end of the stiffening brace 1 to the beam 4. Compared to the connection configuration for joining the upper end of the stiffening brace 1 to the beam 4, only the shape of the end through-hole 17 differs, and the other components are the same as those for the connection configuration for joining the upper end of the stiffening brace 1 to the beam 4. Therefore, only the end through-hole 17 will be described, and the other components will not be described or illustrated.

[0039] In the connection configuration where the upper end of the stiffening brace 1 is joined to the beam 4, as shown in Figure 3(B), the end through-hole 17 is formed in a horizontally elongated shape that is longer in the longitudinal direction of the brace steel material 5 than the outer diameter of the bolt 18. In contrast, in the connection configuration where the lower end of the stiffening brace 1 is joined to the beam 4, the inner diameter of the end through-hole 17 is set to be the same as the outer diameter of the bolt 18. As a result, the movement of the bolt 18 within the end through-hole 17 is restricted, and the stiffening brace 1 is joined to the beam 4 in a state where the movement of the stiffening material 6 relative to the brace steel material 5 in the longitudinal direction of the brace steel material 5 is restricted.

[0040] Thus, in this embodiment, the stiffening brace 1 is joined to the beam 4 at its upper end portion in such a way that movement of the stiffening member 6 relative to the brace steel 5 is permitted in the longitudinal direction of the brace steel 5, and at its lower end portion, the stiffening brace 1 is joined to the beam 4 in such a way that movement of the stiffening member 6 relative to the brace steel 5 is restricted in the longitudinal direction of the brace steel 5.

[0041] Conversely, the stiffening brace 1 can be joined to the beam 4 at its upper end in such a way that the movement of the stiffening member 6 relative to the brace steel 5 in the longitudinal direction of the brace steel 5 is restricted, while the stiffening brace 1 can be joined to the beam 4 at its lower end in such a way that the movement of the stiffening member 6 relative to the brace steel 5 in the longitudinal direction of the brace steel 5 is permitted. The choice of whether to allow the movement of the stiffening member 6 relative to the brace steel 5 in the longitudinal direction of the brace steel 5 at the upper or lower end of the stiffening brace 1 can be changed as appropriate.

[0042] Here, regarding the thickness of the brace steel 5, it is conceivable to increase the thickness of the brace steel 5 at the joint where the stiffening brace 1 and the beam 4 are joined, in order to reinforce the load-bearing capacity at the joint and adjacent positions. However, in this embodiment, priority is given to ease of manufacturing and reduction of manufacturing cost of the brace steel 5 by making the thickness of the brace steel 5 the same along its entire longitudinal length, without increasing the thickness of the brace steel 5 at the joint and adjacent positions.

[0043] [Second Embodiment] This second embodiment is another embodiment of how the fixing portion 72 in the stiffening and integration functional portion 7 is constructed. The fixing portion 72 in the second embodiment will be described in detail based on Figure 4. The other components are the same as in the first embodiment, so their explanation will be omitted by using the same reference numerals. Incidentally, Figure 4 in this second embodiment corresponds to Figure 2(A) in the first embodiment.

[0044] As shown in Figure 4, the fixing portion 72 is equipped with a through bolt 77 that passes through a through hole 71 formed in the brace steel material 5, and a nut 78 for fastening the through bolt 77. The through bolt 77 is positioned so as to pass through the through hole 71 formed in the brace steel material 5 and the stiffener through holes 63 formed in each of the pair of stiffeners 6, with both ends protruding into the recess 62. The inner diameter of the stiffener through holes 63 is set to be slightly smaller than or approximately the same as the outer diameter of the through bolt 77.

[0045] Figure 2(A) of the first embodiment shows an example in which the stiffener 6 is arranged in a state that a gap is formed between the inner side surface 64 of the stiffener 6 and the brace steel 5. In contrast, Figure 4 shows that a sliding material 76 such as Teflon® is interposed in the gap between the inner side surface 64 of the stiffener 6 and the brace steel 5. In this case as well, when the stiffener 6 moves in its longitudinal direction relative to the brace steel 5, that movement can be made smooth.

[0046] [Third Embodiment] This third embodiment, like the second embodiment, is another embodiment of how the fixing portion 72 in the stiffening and integration functional portion 7 is constructed. The fixing portion 72 in the third embodiment will be explained in detail based on Figure 5. The other components are the same as in the first embodiment, so their explanation will be omitted by using the same reference numerals. Incidentally, Figure 5 in this third embodiment corresponds to Figure 2(A) in the first embodiment.

[0047] As shown in Figure 5, the fixing portion 72 is provided with a pair of coupler members 80 fixed to each of the pair of stiffener members 6, and a high-tension bolt 74 and nut 75 that connect the pair of coupler members 73 together, and the constituent members are the same as in the first embodiment.

[0048] In this third embodiment, the length of the coupler member 80 is different from that of the first embodiment. The length of the coupler member 80 is set to be the same as the length of the through-hole portion 63 for the stiffener. Therefore, only the high-tension bolt 74 is provided in a state where it passes through the through-hole portion 71.

[0049] In this third embodiment, as in the second embodiment, a sliding material 76 such as Teflon is interposed between the inner side surface portion 64 of the stiffening material 6 and the brace steel material 5.

[0050] [Fourth Embodiment] This fourth embodiment is another embodiment of the stiffener 6. Based on Figure 6, the stiffener 8 in the fourth embodiment will be described in detail. The other components are the same as in the first embodiment, so their description will be omitted by using the same reference numerals. Incidentally, Figure 6 in this fourth embodiment corresponds to Figure 2(A) in the first embodiment.

[0051] In the first embodiment, as shown in Figure 2(A), the stiffeners 6 are made of wooden material with a square cross-section, and two stiffeners 6 are arranged adjacent to each other in the vertical direction of the brace steel material 5, so that there are two pairs of stiffeners 6 that sandwich the brace steel material 5 from both sides, for a total of four stiffeners 6.

[0052] In contrast, in the fourth embodiment, as shown in Figure 6, there is a pair of stiffeners 8 that sandwich the brace steel material 5 from both sides, for a total of two stiffeners 8. The cross-section of the stiffener 8 is not square, but is formed in a rectangular shape that is long in the vertical direction of the brace steel material 5. In this case, since there are only two stiffeners 8, the stiffeners are not reinforced. There is also one through-hole 71 and one fixing part 72 in the integrated functional part 7.

[0053] [Fifth Embodiment] This fifth embodiment is another embodiment regarding the shape of the through-hole portion 71 in the stiffening and integration functional portion 7. Based on Figure 7, the through-hole portion 83 in the fifth embodiment will be described in detail. Other components are the same as in the first embodiment, so their description will be omitted by using the same reference numerals. Incidentally, Figure 7 in this fifth embodiment corresponds to Figure 2(B) in the first embodiment.

[0054] In the first embodiment, as shown in Figure 2(B), the through-hole portion 71 is formed in a horizontally elongated shape that is longer in the longitudinal direction of the brace steel material 5 than the outer diameter of the coupler member 73 in the fixing portion 72, and the vertical width of the through-hole portion 71 is set to be approximately the same as the vertical width (outer diameter) of the coupler member 73 in the fixing portion 72.

[0055] In contrast, in the fifth embodiment, as shown in Figure 7, the through-hole 83 is formed in a circular shape having an inner diameter that is a predetermined amount larger than the outer diameter of the coupler member 73 in the fixing portion 72. The through-hole 83 is provided as a so-called loose hole, and allows the coupler member 73 to move by a predetermined amount not only in the lateral direction but also in the radial direction with respect to its center, such as in the vertical and diagonal directions. As a result, the stiffening and integration function portion 7 allows the stiffening member 6 to move relative to the brace steel material 5 not only in the longitudinal direction of the brace steel material 5 but also in the vertical direction of the brace steel material 5, and each of the pair of stiffening members 6 does not bear the axial force of the brace steel material 5.

[0056] [Sixth Embodiment] This sixth embodiment is another embodiment of the connection configuration for joining the upper end of the stiffening brace 1 to the beam 4. Based on Figures 8 to 10, the connection configuration for joining the upper end of the stiffening brace 1 to the beam 4 in the sixth embodiment will be described in detail. Other configurations are the same as in the first embodiment, so their explanation will be omitted by using the same reference numerals, etc. Incidentally, Figures 8 to 10 in this sixth embodiment correspond to Figure 3 in the first embodiment.

[0057] In the first embodiment, as shown in Figure 3, an exposed portion 11 is provided at the upper end of the stiffening brace 1 where the brace steel material 5 is exposed. The first to third welding portions 13 to 15 at the exposed portion 11 are welded to the plate body 12 and the lower surface of the lower flange 41 of the beam 4, using the plate body 12 as a backing material. The thickness of the brace steel material 5 is kept the same along its entire length in the longitudinal direction, without increasing the thickness of the brace steel material 5 at the joint and adjacent positions. This makes it easier to manufacture the brace steel material 5 and reduces the manufacturing cost of the brace steel material 5.

[0058] In contrast, in the sixth embodiment, as shown in Figure 8, an exposed portion 11 is provided at the upper end of the stiffening brace 1 where the brace steel material 5 is exposed, and a reinforcing plate 21 is provided at the exposed portion 11 to reinforce the joint between the stiffening brace 1 and the beam 4. By providing the reinforcing plate 21 in this way, the load-bearing capacity at the joint where the stiffening brace 1 and the beam 4 are joined can be reinforced, while the brace steel material 5 can be manufactured with the same thickness along its entire length in the longitudinal direction, making it easier to manufacture and reducing the manufacturing cost of the brace steel material 5.

[0059] The reinforcing plate 21 is joined to the brace steel 5 by welding or the like, in a position that extends in a direction perpendicular to the vertical direction of the brace steel 5. As shown in Figure 8(B), the brace steel 5 and the reinforcing plate 21 are arranged in a cross shape. As shown in Figure 8(A), the length of the reinforcing plate 21 is set to be longer than the exposed portion 11 of the brace steel 5, and the portion below the exposed portion 11 is positioned between two stiffeners 6 that are aligned vertically on the brace steel 5, as shown by the dotted line in Figure 8(B).

[0060] Regarding the welding area, the third welding area 15 in the exposed area 11 is welded to the lower surface of the plate body 12 and the lower flange 41 of the beam 4, using the plate body 12 as a backing material.

[0061] Furthermore, in the sixth embodiment, the length of the reinforcing plate 21 can be shortened, as shown in Figure 9 instead of Figure 8. For example, the length of the reinforcing plate 21 can be set to be slightly shorter than the exposed portion 11 of the brace steel 5. In this case, an integration portion 22 is provided that integrates the two stiffening members 6 arranged vertically on the brace steel 5. A detailed explanation and illustration of this integration portion 22 are omitted, but for example, it can have a similar configuration to the fixing portion 72 and the end integration portion 16 in the stiffening / integration function portion 7.

[0062] Regarding the stiffeners 6, Figures 8 and 9 show a case where, similar to the first embodiment, the stiffener brace 1 is provided with two pairs of stiffeners 6 that sandwich the brace steel 5 from both sides, for a total of four stiffeners 6. Here, as shown in Figure 6 of the fourth embodiment, it is also possible to provide one pair of stiffeners 8 that sandwich the brace steel 5 from both sides, for a total of two stiffeners 8. The case where the stiffener brace 1 is provided with two stiffeners 8 will be explained using Figure 10.

[0063] As shown in Figure 10, the length of the reinforcing plate 21 is set to be longer than the exposed portion 11 of the brace steel 5, so the reinforcing plate 21 extends beyond the exposed portion 11 where the stiffener 8 is not present, to the portion where the stiffener 8 is present. Therefore, the stiffener 8 is provided with a notch 9 for arranging the reinforcing plate 21. The notch 9 is formed in a straight line cut out from the end portion of the stiffener 8 along the longitudinal direction of the brace steel 5.

[0064] [Another embodiment] (1) In the above embodiment, the case in which the stiffening structure according to the present invention is applied to the stiffening brace 1 was described, but it is not limited to a stiffening brace, and can be applied to any type of device that has a compressive steel material that is subjected to compressive force. For example, the stiffening structure according to the present invention can be applied to a truss structure having an upper chord, a lower chord, and diagonal members connecting the upper and lower chords, where the diagonal members and upper chords are made of compression steel. [Explanation of symbols]

[0065] 1. Stiffening brace 5. Brace steel (compression steel) 6. Stiffeners 7. Reinforcement and integrated functional parts 8. Stiffeners 71 Through hole 72 Fixed part 83 Through hole

Claims

1. The structure comprises a compression steel member that is subjected to compressive force, and a pair of wooden stiffeners arranged to sandwich the compression steel member from both sides in a direction perpendicular to the longitudinal direction of the compression steel member. The compression steel material is provided with a circular through-hole that is elongated horizontally in the longitudinal direction of the compression steel material or has an inner diameter that is a predetermined amount larger than the outer diameter of the fixing part, and fixing parts that pass through the through-hole and fix stiffeners to both ends, The through-hole portion and the fixing portion are a stiffening structure arranged in multiple locations in the longitudinal direction of the compressed steel material, between the end portions.

2. Each of the longitudinal ends of the compressed steel material is provided with an end through hole and an end fixing portion, The stiffening structure according to claim 1, wherein one side of the end through-hole is formed in a horizontally elongated shape that is long in the longitudinal direction of the compressed steel material, and the other side of the end through-hole is formed in a circular shape having an inner diameter equal to the outer diameter of the end fixing portion.

3. The stiffening structure according to claim 1 or 2, wherein the fixing portion comprises a coupler member fixed to the stiffening material and a bolt and nut inserted into the coupler member for fastening.

4. The stiffening structure according to claim 1 or 2, wherein the stiffening members are arranged in pairs in a direction aligned with the plane direction of the compressed steel material made of flat steel material, and the structure comprises two sets of stiffening members that sandwich the compressed steel material from both sides.

5. The stiffening structure according to claim 1 or 2, wherein in the longitudinally elongated through-hole of the compression steel material, the width in the direction along the surface direction of the compression steel material made of flat steel material is set to be approximately equal to the width in the direction along the surface direction of the compression steel material in the fixing portion, thereby restricting the movement of the fixing portion that penetrates the through-hole in the direction along the surface direction of the compression steel material.

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