Roof truss structures, buildings, and roof truss repair methods

Abstract

The present invention provides a roof truss structure, building, and roof truss repair method that allows for adjustment of the deflection of horizontal members. [Solution] The roof truss structure comprises a horizontal member 11, a support member 12 perpendicular to the horizontal member 11 and connected to the upper surface 11B of the horizontal member 11, and a connecting part 13 that connects the horizontal member 11 and the support member 12. The connecting part 13 connects the horizontal member 11 and the support member 12 in a manner that allows adjustment of the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12.

Description

Technical Field

[0001] The present disclosure relates to a framed structure, a building, and a method for renovating a framed structure.

Background Art

[0002] A framed structure composed of a sloping beam, a tie member, and a transverse member (referred to as a beam member in the same document) is known (for example, Patent Document 1). In the technique described in Patent Document 1, a tie member is erected at an intermediate position of the transverse member. The sloping member is spanned between the upper end of the tie member and the end of the transverse member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0007] (2) In the truss structure described in (1) above, the structure further comprises two sloping members, the two sloping members being positioned opposite each other with respect to the beam member, each of the two sloping members being directly or indirectly connected at the upper end of the sloping member to the upper end of the beam member, and being directly or indirectly connected at or near the lower end of the sloping member to the end of the horizontal member.

[0008] In this configuration, the support members are placed within a triangular structure composed of two sloping members and a horizontal member. The stress generated when adjusting the deflection of the horizontal member can be received within the triangular structure. Because the stress is received within the triangular structure, the horizontal member can be maintained in a shape close to a straight line. Therefore, the deflection of the horizontal member can be adjusted more effectively compared to a roof truss structure without sloping members.

[0009] (3) In the truss structure described in (2) above, the connecting portion comprises a first shaft portion extending in a direction perpendicular to the upper surface of the horizontal member and fixed to the horizontal member, a second shaft portion extending in a direction perpendicular to the lower end surface of the support member and fixed to the support member, and a connecting member connecting the first shaft portion and the second shaft portion, wherein the connecting member engages with the first shaft portion and the second shaft portion by a screw structure and is configured such that the first shaft portion and the second shaft portion move closer to each other by rotation in a first direction.

[0010] With this configuration, the distance between the upper surface of the horizontal member and the lower end surface of the support member can be adjusted by rotating the connecting member.

[0011] (4) In the truss structure described in (3) above, the first shaft portion has a first fixing portion fixed to the horizontal member and a first male threaded portion exposed from the horizontal member, the second shaft portion has a second fixing portion fixed to the support member and a second male threaded portion exposed from the support member and having a reverse thread structure with respect to the first male threaded portion, and the connecting member has a first female threaded portion that engages with the first male threaded portion and a second female threaded portion that engages with the second male threaded portion. With this configuration, the connection portion can be made into a simple structure.

[0012] (5) In the truss structure described in (4) above, the outer shape of the connecting member in a plane perpendicular to the axis of rotation of the connecting member is polygonal.

[0013] With this configuration, compared to the case where the outer shape of the connecting member is circular, the connecting member can be easily rotated by a tool that engages with the outer surface of the connecting member.

[0014] (6) In the truss structure described in any one of (3) to (5) above, the upper surface of the horizontal member is provided with a first recess in which the first shaft portion is arranged, the lower end surface of the support member is provided with a second recess in which the second shaft portion is arranged, the lower part of the connecting member is housed in the first recess, and the upper part of the connecting member is housed in the second recess.

[0015] This configuration makes it difficult to see the connecting members. When a skeleton space is created within a building to expose the roof truss structure, the horizontal members and post members are exposed, but because the connecting members are difficult to see, the roof truss structure can be made to look aesthetically pleasing.

[0016] (7) In the truss structure described in any one of (3) to (6) above, a gap is provided between the upper surface of the horizontal member and the lower end surface of the support member, and one or more spacers are placed in the gap to fill the gap.

[0017] This configuration improves the joint strength between the support members and the horizontal members compared to when spacers are not placed in the gaps.

[0018] (8) In the truss structure described in (7) above, the spacer is divided into a first spacer and a second spacer with respect to a line perpendicular to the rotational axis of the connecting member. With this configuration, when adjusting the distance between the upper surface of the horizontal member and the lower end surface of the support member, only one of the first or second spacers can be removed. Therefore, it is easier to remove the spacers compared to when the spacers are a single unit. In addition, there is the following effect: If the spacers are not divided, when the spacers are removed, the force of the removal can cause stress to concentrate between the connection and the support member or between the connection and the horizontal member, which may result in cracks in the horizontal member or support member. With the above configuration, however, one of the first or second spacers can be left in the gap, so it is possible to suppress the concentration of stress between the connection and the support member or between the connection and the horizontal member.

[0019] (9) In the truss structure described in (8) above, the first spacer has a first notch, and the second spacer has a second notch, wherein the first notch is configured such that when the first spacer is placed in the gap, a space is provided between the side surface of the connecting member and the first notch surface of the first notch into which a tool head for rotating the connecting member can enter, and the second notch is configured such that when the second spacer is placed in the gap, a space is provided between the side surface of the connecting member and the second notch surface of the second notch into which a tool head for rotating the connecting member can enter.

[0020] With this configuration, when adjusting the distance between the upper surface of the horizontal member and the lower end surface of the support member, the worker can insert the tool head between the spacer and the connecting member while leaving one of the first or second spacers in place. This makes it easier to rotate the connecting member with the tool. As a result, the distance between the upper surface of the horizontal member and the lower end surface of the support member can be smoothly adjusted.

[0021] (10) The building that solves the above problems has a small-house structure according to any one of the above (1) to (9). According to this configuration, the deflection of the horizontal girders in the small-house structure can be adjusted.

[0022] (11) The method for renovating a small-house structure that solves the above problems is a method for renovating a small-house structure, including a renovation process for renovating the small-house structure. The small-house structure includes a horizontal girder, a bundle member that is orthogonal to the horizontal girder and connected to the upper surface of the horizontal girder, and a connection part that connects the horizontal girder and the bundle member. The connection part is configured to connect the horizontal girder and the bundle member such that the distance between the upper surface of the horizontal girder and the lower end surface of the bundle member can be adjusted. In the renovation process, the connection part adjusts the distance between the upper surface of the horizontal girder and the lower end surface of the bundle member.

[0023] According to this configuration, the deflection of the horizontal girder can be adjusted by adjusting the distance between the upper surface of the horizontal girder and the lower end surface of the bundle member.

[0024] (12) In the method for renovating a small-house structure according to the above (11), the connection part includes a first shaft part that extends in a direction orthogonal to the upper surface of the horizontal girder and is fixed to the horizontal girder, a second shaft part that extends in a direction orthogonal to the lower end surface of the bundle member and is fixed to the bundle member, and a connecting member that connects the first shaft part and the second shaft part. The connecting member engages with the first shaft part and the second shaft part by a screw structure and is configured such that the first shaft part and the second shaft part approach each other by rotation in a first direction. A gap is provided between the upper surface of the horizontal girder and the lower end surface of the bundle member, and one or more spacers are arranged in the gap to fill the gap. The spacer is divided into a first spacer and a second spacer with a line orthogonal to the rotation central axis of the connecting member as a boundary. In the renovation process, the distance between the upper surface of the horizontal girder and the lower end surface of the bundle member is adjusted by removing one of the first spacer and the second spacer and turning the connecting member while the other is arranged in the gap.

[0025] When removing all of the spacers, due to the force of removal, stress may concentrate between the connecting part and the bundling member or between the connecting part and the cross member, and as a result, there is a risk of causing cracks in the cross member or the bundling member. In this regard, according to the above configuration, since one of the first spacer and the second spacer is left in the gap, it is possible to suppress the concentration of stress between the connecting part and the bundling member or between the connecting part and the cross member. Thereby, deterioration of the bundling member and the cross member during adjustment can be suppressed.

Effects of the Invention

[0026] According to the shed structure, building, and shed renovation method of the present disclosure, the deflection of the cross member can be adjusted.

Brief Description of the Drawings

[0027] [Figure 1] It is a perspective view of a building. [Figure 2] It is a perspective view of the frame of a building. [Figure 3] It is a side view of the frame of a building. [Figure 4] In the shed structure, it is a front view of the part where the cross member and the bundling member are connected. [Figure 5] It is an enlarged view of the connecting part. [Figure 6] It is a diagram showing the arrangement of the first spacer and the second spacer. [Figure 7] It is a schematic diagram showing a frame body including the cross member before deflection and a frame body including the cross member after deflection. [Figure 8] It is a schematic diagram showing a frame body including the cross member after deflection and a frame body including the cross member after adjustment. [Figure 9] It is a diagram of a modified example of the shed structure.

Modes for Carrying Out the Invention

[0028] Referring to FIGS. 1 to 8, the shed structure 8, building 1, and shed renovation method of the present embodiment will be described. Figure 1 shows building 1 of this embodiment. The roof 2 of building 1 of this embodiment comprises a first roof surface 2A and a second roof surface 2B. The first roof surface 2A slopes downward from the ridge 3. The second roof surface 2B extends in a direction intersecting the first roof surface 2A. The second roof surface 2B slopes downward in the opposite direction to the first roof surface 2A, with the ridge 3 as the boundary.

[0029] As shown in Figure 2, building 1 is equipped with a roof truss structure 8. The roof truss structure 8 is the part of the building's frame 5 that supports the roof 2. The roof truss structure 8 constitutes the framework of the roof 2.

[0030] Figure 3 shows a side view of the frame 5 of building 1. Figure 3 shows a side view of the frame 5 when the roof sheathing material 19 is attached to the roof truss structure 8.

[0031] As shown in Figure 3, the roof truss structure 8 comprises a horizontal member 11, a post member 12, and a connecting part 13. In this embodiment, the roof truss structure 8 further comprises a ridge member 14, two sloping members 15, and an eave-side horizontal member 16. In this embodiment, the horizontal member 11, the post member 12, the ridge member 14, the sloping members 15, and the eave-side horizontal member 16 are made of wood. The horizontal member 11 may be laminated timber or solid wood.

[0032] In this embodiment, there are multiple horizontal members 11. The horizontal members 11 extend horizontally. The multiple horizontal members 11 are arranged at intervals in a first direction D1. The multiple horizontal members 11 are arranged parallel to each other on a single plane. The first direction D1 coincides with the direction in which the ridge portion 3 of the roof 2 extends.

[0033] The support members 12 are provided at the intermediate portion 11A of each of the multiple horizontal members 11. The intermediate portion 11A is the part of the horizontal member 11 that is at an equal distance from both ends. The support members 12 extend upward from the intermediate portion 11A of the horizontal member 11. The support members 12 are perpendicular to the horizontal member 11. The support members 12 are connected to the upper surface 11B of the horizontal member 11. The lengths of the multiple support members 12 are equal to each other. A ridge member 14 is positioned above the multiple support members 12. The ridge member 14 extends across the multiple support members 12.

[0034] The eaves-side horizontal members 16 are positioned at the ends of the horizontal members 11. The eaves-side horizontal members 16 extend in a direction perpendicular to the direction in which the horizontal members 11 extend. In a plan view, the eaves-side horizontal members 16 are positioned at each end of the horizontal members 11. That is, the roof truss structure 8 comprises two eaves-side horizontal members 16. One of the two eaves-side horizontal members 16 is connected to one end of the plurality of horizontal members 11. The other of the two eaves-side horizontal members 16 is connected to the other end of the plurality of horizontal members 11.

[0035] The sloping members 15 extend downward from the ridge member 14. In a plan view, multiple sloping members 15 are arranged in each of the two regions separated by the ridge member 14. In each region, the multiple sloping members 15 are arranged to overlap with the horizontal members 11 in a plan view. In the region on the first roof surface 2A side, the multiple sloping members 15 extend along the first roof surface 2A. In the region on the second roof surface 2B side, the multiple sloping members 15 extend along the second roof surface 2B. The upper ends of the sloping members 15 are connected to the ridge member 14. The portion of the sloping members 15 near the lower end is connected to the eave-side horizontal member 16.

[0036] In this embodiment, the roof truss structure 8 comprises a plurality of frame members 9. The plurality of frame members 9 have the same shape. The frame members 9 are components of the roof truss structure 8. The frame members 9 have a triangular structure. The frame members 9 have an isosceles triangular structure with the horizontal members 11 as the base and the sloping members 15 as the hypotenuses. The plurality of frame members 9 are connected by a ridge member 14 and an eave-side horizontal member 16.

[0037] In one frame 9, the two sloping members 15 are positioned opposite each other with respect to the support member 12. Each of the two sloping members 15 is directly or indirectly connected at its upper end to the upper end of the support member 12. In this embodiment, the upper end of the sloping member 15 is connected to the upper end of the support member 12 via the ridge member 14. Each of the two sloping members 15 is directly or indirectly connected at or near its lower end to the end of the horizontal member 11. In this embodiment, the portion of the sloping member 15 near its lower end is connected to the end of the horizontal member 11 via the eaves horizontal member 16.

[0038] [Connection part 13] The connection part 13 will be explained with reference to Figures 4 and 5. Figure 4 shows the diagram with the second spacer 45 (see below) removed.

[0039] The connecting portion 13 connects the horizontal member 11 and the support member 12. Specifically, the connecting portion 13 connects the horizontal member 11 and the support member 12 in a manner that allows adjustment of the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12.

[0040] The connecting portion 13 comprises a first shaft portion 21, a second shaft portion 25, and a connecting member 31. The first shaft portion 21 extends in a direction perpendicular to the upper surface 11B of the horizontal member 11 and is fixed to the horizontal member 11. The first shaft portion 21 has a first fixing portion 22 fixed to the horizontal member 11 and a first male threaded portion 23 exposed from the horizontal member 11. The first fixing portion 22 is inserted into an insertion hole that extends vertically from the upper surface 11B of the horizontal member 11. The first fixing portion 22 is fixed to the horizontal member 11 by a drift pin 29 that penetrates the horizontal member 11 and the first fixing portion 22.

[0041] The second shaft portion 25 extends in a direction perpendicular to the lower end surface 12A of the bundle member 12 and is fixed to the bundle member 12. The second shaft portion 25 has a second fixing portion 26 fixed to the bundle member 12 and a second male thread portion 27 exposed from the bundle member 12 and having a reverse thread structure with respect to the first male thread portion 23. The second fixing portion 26 is inserted into an insertion hole that extends vertically upward from the lower end surface 12A of the bundle member 12. The second fixing portion 26 is fixed to the bundle member 12 by a drift pin 29 that penetrates the bundle member 12 and the second fixing portion 26.

[0042] The connecting member 31 connects the first shaft portion 21 and the second shaft portion 25. The connecting member 31 engages with the first shaft portion 21 and the second shaft portion 25 by a screw structure, and is configured such that the first shaft portion 21 and the second shaft portion 25 move closer to each other by rotation in the first direction D1. Specifically, the connecting member 31 has a first female screw portion 32 that engages with the first male screw portion 23 and a second female screw portion 33 that engages with the second male screw portion 27. The outer shape of the connecting member 31 in a plane perpendicular to the axis of rotation of the connecting member 31 is polygonal.

[0043] A first recess 11C is provided on the upper surface 11B of the horizontal member 11, where the first shaft portion 21 is positioned when viewed from the upper surface 11B. Specifically, the first recess 11C is provided on the upper surface 11B of the horizontal member 11 such that when viewed from a direction along the rotational axis of the connecting member 31, the first shaft portion 21 is positioned within the first recess 11C. The first recess 11C is configured as a circular counterbore centered on the central axis of the first shaft portion 21. The lower part of the connecting member 31 is housed in the first recess 11C.

[0044] The lower end surface 12A of the bundle member 12 is provided with a second recess 12B in which the second shaft portion 25 is positioned, as viewed from the lower end surface 12A. Specifically, the second recess 12B is provided on the lower end surface 12A of the bundle member 12 such that, when viewed from a direction along the rotational axis of the connecting member 31, the second shaft portion 25 is positioned within the second recess 12B. The second recess 12B is configured as a circular counterbore centered on the central axis of the second shaft portion 25. The upper part of the connecting member 31 is housed in the second recess 12B.

[0045] A gap S is provided between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. Specifically, during the construction of the building 1, a gap S is provided between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. Therefore, when the roof truss structure 8 is assembled, the length of the support member 12 is slightly shorter than the distance between the lower surface of the ridge member 14 and the upper surface 11B of the horizontal member 11. One or more spacers 40 are placed in the gap S to fill the gap S. The load of the support member 12 is transmitted to the horizontal member 11 via the spacers 40.

[0046] The height of the gap S is greater than or equal to the size into which the tool head 51 of the tool 50 used to rotate the connecting member 31 can be inserted. The height of the gap S is also set according to the future deflection of the horizontal member 11. The deflection of the horizontal member 11 is defined as the distance between the middle part 11A and the end of the horizontal member 11 in the vertical direction. The deflection of the horizontal member 11 varies depending on the length of the horizontal member 11 and the maximum service life of the building 1. In one example, the height of the gap S is set based on an estimate of the deflection of the horizontal member 11 after 50 years, which is the maximum service life of the building 1, and the thickness of the tool head 51.

[0047] As shown in Figure 6, the spacer 40 is divided into a first spacer 41 and a second spacer 45, with the line LA perpendicular to the rotational axis of the connecting member 31 as the boundary.

[0048] The first spacer 41 has a first spacer body portion 42 and a first spacer fixing portion 43, which are positioned between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. The first spacer body portion 42 is the portion of the first spacer 41 between two parallel dividing lines LB. The first spacer fixing portion 43 is configured as an extension of the first spacer body portion 42. The first spacer fixing portion 43 is provided at both ends of the first spacer body portion 42 so as to be along the dividing lines LB. When the first spacer body portion 42 of the first spacer 41 is positioned between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, the first spacer fixing portion 43 is exposed from the support member 12 in a plan view. The first spacer fixing portion 43 is fixed to the horizontal member 11 by screws 49. The first spacer fixing portion 43 is used as a handle when removing the first spacer 41.

[0049] The first spacer 41 has a first notch 44. The first notch 44 is configured to cut out the first spacer body 42. The first notch 44 is configured such that when the first spacer 41 is placed in the gap S, a space is provided between the side surface of the connecting member 31 and the first notch surface 44A of the first notch 44 into which a tool head 51 for rotating the connecting member 31 can fit.

[0050] The second spacer 45 has a second spacer body portion 46 and a second spacer fixing portion 47, which are positioned between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. The second spacer body portion 46 is the portion of the second spacer 45 between two parallel dividing lines LC. The second spacer fixing portion 47 is configured as an extension of the second spacer body portion 46. The second spacer fixing portion 47 is provided at both ends of the second spacer body portion 46 so as to be along the dividing lines LC. When the second spacer body portion 46 of the second spacer 45 is positioned between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, the second spacer fixing portion 47 is exposed from the support member 12 in a plan view. The second spacer fixing portion 47 is fixed to the horizontal member 11 by screws 49. The second spacer fixing portion 47 is used as a handle when removing the first spacer 41.

[0051] The second spacer 45 has a second notch 48. The second notch 48 is configured to cut out the second spacer body 46. The second notch 48 is configured such that when the second spacer 45 is placed in the gap S, a space is provided between the side surface of the connecting member 31 and the second notch surface 48A of the second notch 48 into which a tool head 51 for rotating the connecting member 31 can fit.

[0052] In this embodiment, the shape of the second spacer 45 is the same as the shape of the first spacer 41. The first spacer 41 and the second spacer 45 are made of a metal plate, a wooden plate, or a resin plate.

[0053] [Roof structure repair methods] This section explains the roof truss repair method. The roof truss repair method is for the roof truss structure 8 of the structure described above. The horizontal members 11 sag downward over time. In particular, with wooden horizontal members 11, the larger the span and the longer the time elapsed, the greater the amount of sagging. When sagging occurs in the horizontal members 11 over time, the amount of sagging of the horizontal members 11 is adjusted so that the amount of sagging of the horizontal members 11 is reduced. The roof truss repair method is a method for adjusting the amount of sagging of the horizontal members 11.

[0054] The roof truss repair method includes a repair process for repairing the roof truss structure 8. In the repair process, the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 is adjusted by the connecting part 13.

[0055] In the repair process, the worker removes one of the first spacer 41 and the second spacer 45. Then, with the other spacer 40 positioned in the gap S, the connecting member 31 is rotated. This adjusts the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12.

[0056] Specifically, the worker removes all of the first spacers 41 from between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. Then, the worker rotates the connecting member 31 in the first direction D1 using a tool 50 such as a wrench. As a result, the first shaft portion 21 and the second shaft portion 25 move closer to each other, and the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 decreases. When the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 has decreased slightly, the worker removes one of the remaining second spacers 45. Then, the worker further rotates the connecting member 31 in the first direction D1 using a tool 50 such as a wrench, further reducing the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. In this way, the gap S between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 is gradually narrowed. The worker repeats this process until the amount of deflection of the horizontal member 11 reaches the desired amount of deflection. Once the amount of deflection of the horizontal member 11 reaches the desired amount of deflection, the worker inserts some of the removed first spacers 41 into the gap S between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. Then, the first spacers 41 are fixed to the horizontal member 11 with screws 49.

[0057] [Operation of this embodiment] The operation of the truss structure 8 of this embodiment will be explained with reference to Figures 7 and 8. As time passes since the completion of building 1, the horizontal members 11 will sag. When the horizontal members 11 sag, the framework 5 installed along the horizontal members 11 deforms, causing the fitting of doors and windows to deteriorate. In addition, the wall materials installed along the horizontal members 11 deform. Wall materials include ceiling materials and interior wall materials. This causes inconvenience to the residents or users of building 1.

[0058] The truss structure 8 of this embodiment has a connecting portion 13 that connects the horizontal member 11 and the support member 12. The connecting portion 13 connects the horizontal member 11 and the support member 12 in such a way that the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 can be adjusted. By adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, the amount of deflection of the horizontal member 11 can be forcibly reduced.

[0059] The solid line in Figure 7 is a schematic diagram of one frame 9 of the truss structure 8 before the horizontal member 11 deflects. The dashed lines in Figures 7 and 8 are schematic diagrams of the frame 9 when the horizontal member 11 deflects. The deflection of the horizontal member 11 distorts the isosceles triangle. The dashed line in Figure 8 is a schematic diagram of the frame 9 when the amount of deflection of the horizontal member 11 is reduced by adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. In Figures 7 and 8, the gap S is not indicated, and the length of the support member 12 is indicated as the length including the gap S. Therefore, in the schematic diagram of Figure 8, the length of the support member 12 is shortened after the adjustment to shorten the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12.

[0060] By adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, the distance between the vertex and base of the isosceles triangle can be shortened. This forces a reduction in the deflection of the horizontal member 11. Furthermore, because the frame 9 has a triangular structure, the corrected shape of the frame 9 is favorably maintained.

[0061] [Effects of this embodiment] (1) In the truss structure 8, the connecting part 13 connects the horizontal member 11 and the support member 12 so that the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 can be adjusted. With this configuration, the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 can be adjusted by the connecting part 13. By adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, the deflection of the horizontal member 11 can be adjusted.

[0062] (2) The truss structure 8 comprises two sloping members 15. The two sloping members 15 are positioned opposite each other with respect to the post member 12. Each of the two sloping members 15 is directly or indirectly connected to the upper end of the post member 12 at the upper end of the sloping member 15. Each of the two sloping members 15 is directly or indirectly connected to the end of the horizontal member 11 at or near the lower end of the sloping member 15.

[0063] In this configuration, the support member 12 is placed within a triangular structure formed by two sloping members 15 and a horizontal member 11. The stress generated when adjusting the deflection of the horizontal member 11 can be received within the triangular structure. Because the stress is received within the triangular structure, the horizontal member 11 can be maintained in a shape close to a straight line. Therefore, the deflection of the horizontal member 11 can be adjusted more effectively than in a roof truss structure 8 that does not have sloping members 15.

[0064] (3) The connecting portion 13 comprises a first shaft portion 21 fixed to the horizontal member 11, a second shaft portion 25 fixed to the support member 12, and a connecting member 31 that connects the first shaft portion 21 and the second shaft portion 25. The connecting member 31 engages with the first shaft portion 21 and the second shaft portion 25 by a screw structure, and is configured such that the first shaft portion 21 and the second shaft portion 25 move closer to each other by rotation in the first direction D1. With this configuration, the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 can be adjusted by rotating the connecting member 31.

[0065] (4) The first shaft portion 21 has a first fixing portion 22 fixed to the horizontal member 11 and a first male threaded portion 23 exposed from the horizontal member 11. The second shaft portion 25 has a second fixing portion 26 fixed to the bundle member 12 and a second male threaded portion 27 exposed from the bundle member 12 and having a reverse thread structure with respect to the first male threaded portion 23. The connecting member 31 has a first female threaded portion 32 that engages with the first male threaded portion 23 and a second female threaded portion 33 that engages with the second male threaded portion 27. With this configuration, the connecting portion 13 can be made into a simple structure.

[0066] (5) The outer shape of the connecting member 31 in a plane perpendicular to the axis of rotation of the connecting member 31 is polygonal. With this configuration, the connecting member 31 can be easily rotated by the tool 50 that engages with the outer surface of the connecting member 31, compared to the case where the outer shape of the connecting member 31 is circular.

[0067] (6) The lower part of the connecting member 31 is housed in the first recess 11C. The upper part of the connecting member 31 is housed in the second recess 12B. With this configuration, the connecting member 31 can be made difficult to see. When a skeleton space is provided within the building 1 that exposes the roof truss structure 8, the horizontal members 11 and the post members 12 are exposed, but the connecting member 31 is difficult to see, so the roof truss structure 8 can be made to look beautiful.

[0068] (7) A gap S is provided between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. One or more spacers 40 are placed in the gap S to fill the gap S. With this configuration, the joint strength between the support member 12 and the horizontal member 11 can be improved compared to when the spacers 40 are not placed in the gap S.

[0069] (8) The spacer 40 is divided into a first spacer 41 and a second spacer 45, with the line LA perpendicular to the rotational axis of the connecting member 31 as the boundary. With this configuration, when adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, only one of the first spacer 41 and the second spacer 45 can be removed. For this reason, it is easier to remove the spacer 40 compared to when the spacer 40 is a single unit. In addition, there is the following effect: If the spacer 40 is not divided, when the spacer 40 is removed, the force of the removal may cause stress to concentrate between the connecting part 13 and the support member 12 or between the connecting part 13 and the horizontal member 11, which may result in cracks in the horizontal member 11 or the support member 12. In this regard, with the above configuration, one of the first spacer 41 and the second spacer 45 can be left in the gap S, so that stress concentration between the connection part 13 and the support member 12 or between the connection part 13 and the horizontal member 11 can be suppressed.

[0070] (9) The first spacer 41 has a first notch 44. The second spacer 45 has a second notch 48. The first notch 44 is configured such that when the first spacer 41 is placed in the gap S, a space is provided between the side surface of the connecting member 31 and the first notch surface 44A of the first notch 44 for a tool head 51 to rotate the connecting member 31 to fit into. The second notch 48 is configured such that when the second spacer 45 is placed in the gap S, a space is provided between the side surface of the connecting member 31 and the second notch surface 48A of the second notch 48 for a tool head 51 to rotate the connecting member 31 to fit into.

[0071] With this configuration, when adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12, the worker can insert the tool head 51 between the spacer 40 and the connecting member 31 while leaving one of the first spacer 41 and the second spacer 45 in place. This makes it easier to rotate the connecting member 31 with the tool 50. As a result, the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 can be smoothly adjusted.

[0072] (10) The building 1 is equipped with a roof truss structure 8. With this configuration, the deflection of the horizontal members 11 in the roof truss structure 8 can be adjusted.

[0073] (11) The roof structure repair method includes a repair process. In the repair process, the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 is adjusted by the connection part 13. With this configuration, the deflection of the horizontal member 11 can be adjusted by adjusting the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12.

[0074] (12) In the repair process, one of the first spacer 41 and the second spacer 45 is removed. Then, with the other spacer 40 positioned in the gap S, the worker adjusts the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 by rotating the connecting member 31.

[0075] When all of the spacers 40 are removed, the force of the removal can cause stress to concentrate between the connection part 13 and the support member 12 or between the connection part 13 and the horizontal member 11, which may result in cracks forming in the horizontal member 11 or the support member 12. In this respect, with the above configuration, since one of the first spacers 41 and the second spacers 45 is left in the gap S, stress concentration between the connection part 13 and the support member 12 or between the connection part 13 and the horizontal member 11 can be suppressed. This makes it possible to suppress deterioration of the support member 12 and the horizontal member 11 during adjustment.

[0076] <Example of changes> The above embodiments are examples of possible forms of the truss structure 8, the building 1, and the truss repair method, and are not intended to limit their forms. The truss structure 8, the building 1, and the truss repair method may take forms different from those exemplified in the above embodiments. Examples of such forms include forms in which some of the configurations of the embodiments are replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Modifications of the embodiments are shown below.

[0077] In this embodiment, a connecting portion 13 is provided for the connection between the support member 12, which is positioned in the middle portion 11A of the horizontal member 11, and the horizontal member 11. The connecting portion 13 is configured to adjust the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12. Such a connecting portion 13 may be provided in other parts as well.

[0078] As shown in Figure 9, a connecting portion 13 may be provided at the connection between the support member 12 located between the end and the intermediate portion 11A of the horizontal member 11 and the horizontal member 11.

[0079] The outer shape of the connecting member 31 on a plane perpendicular to the axis of rotation of the connecting member 31 does not have to be polygonal. For example, the outer shape of the connecting member 31 on a plane perpendicular to the axis of rotation of the connecting member 31 may be an oval shape like a bar.

[0080] - The upper surface 11B of the horizontal member 11 does not necessarily have to have a first recess 11C where the first shaft portion 21 is positioned. The lower end surface 12A of the support member 12 does not necessarily have to have a second recess 12B where the second shaft portion 25 is positioned.

[0081] The lower part of the connecting member 31 does not have to be housed in the first recess 11C. The upper part of the connecting member 31 does not have to be housed in the second recess 12B.

[0082] - It is not necessary to place one or more spacers 40 in the gap S between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 to fill the gap S.

[0083] The spacer 40 does not necessarily have to be divided into a first spacer 41 and a second spacer 45 by a line LA perpendicular to the rotational axis of the connecting member 31. For example, the spacer 40 may be made of a single plate having a groove that passes through the connecting member 31.

[0084] The first spacer 41 does not have to have the first notch 44. The second spacer 45 does not have to have the second notch 48. In this case, the width of the first spacer 41 or the second spacer 45 is less than half the width of the horizontal member 11 in plan view.

[0085] • In the renovation process, the distance between the upper surface 11B of the horizontal member 11 and the lower end surface 12A of the support member 12 may be adjusted by rotating the connecting member 31 with both the first spacer 41 and the second spacer 45 removed.

[0086] <Note> This specification discloses the following technologies: [Note 1] The truss structure described in Appendix 1 comprises a horizontal member, a support member perpendicular to the horizontal member and connected to the upper surface of the horizontal member, and a connecting portion connecting the horizontal member and the support member. The connecting portion connects the horizontal member and the support member in such a way that the distance between the upper surface of the horizontal member and the lower end surface of the support member can be adjusted.

[0087] [Note 2] The truss structure described in Appendix 1 further comprises two sloping members. The two sloping members are positioned opposite each other with respect to the beam member. Each of the two sloping members is directly or indirectly connected at its upper end to the upper end of the beam member, and directly or indirectly connected at or near its lower end to the end of the horizontal member.

[0088] [Note 3] In the truss structure described in Appendix 2, the connecting portion comprises a first shaft portion extending in a direction perpendicular to the upper surface of the horizontal member and fixed to the horizontal member, a second shaft portion extending in a direction perpendicular to the lower end surface of the support member and fixed to the support member, and a connecting member connecting the first shaft portion and the second shaft portion. The connecting member engages with the first shaft portion and the second shaft portion by a screw structure and is configured such that the first shaft portion and the second shaft portion move closer to each other by rotation in a first direction.

[0089] [Note 4] In the truss structure described in Appendix 3, the first shaft portion has a first fixing portion fixed to the horizontal member and a first male threaded portion exposed from the horizontal member. The second shaft portion has a second fixing portion fixed to the support member and a second male threaded portion exposed from the support member and having a reverse thread structure with respect to the first male threaded portion. The connecting member has a first female threaded portion that engages with the first male threaded portion and a second female threaded portion that engages with the second male threaded portion.

[0090] [Note 5] In the truss structure described in Appendix 4, the outer shape of the connecting member on a plane perpendicular to the axis of rotation of the connecting member is polygonal.

[0091] [Note 6] In the truss structure described in Appendix 3, the upper surface of the horizontal member is provided with a first recess in which the first shaft portion is positioned. The lower end surface of the support member is provided with a second recess in which the second shaft portion is positioned. The lower part of the connecting member is housed in the first recess, and the upper part of the connecting member is housed in the second recess.

[0092] [Note 7] In the truss structure described in Appendix 3, a gap is provided between the upper surface of the horizontal member and the lower end surface of the support member, and one or more spacers are placed in the gap to fill it.

[0093] [Note 8] In the truss structure described in Appendix 7, the spacer is divided into a first spacer and a second spacer, with a line perpendicular to the rotational axis of the connecting member as the boundary.

[0094] [Note 9] In the truss structure described in Appendix 8, the first spacer has a first notch. The second spacer has a second notch. The first notch is configured such that when the first spacer is placed in the gap, a space is provided between the side surface of the connecting member and the first notch surface of the first notch for a tool head to rotate the connecting member. The second notch is configured such that when the second spacer is placed in the gap, a space is provided between the side surface of the connecting member and the second notch surface for a tool head to rotate the connecting member.

[0095] [Note 10] A building having a roof structure as described in any one of the appendices 1 to 9.

[0096] [Note 11] The roof truss repair method described in Appendix 11 is a roof truss repair method for a roof truss structure, and includes a repair step of repairing the roof truss structure. The roof truss structure comprises a horizontal member, a support member perpendicular to the horizontal member and connected to the upper surface of the horizontal member, and a connecting portion connecting the horizontal member and the support member. The connecting portion is configured to connect the horizontal member and the support member in such a way that the distance between the upper surface of the horizontal member and the lower end surface of the support member can be adjusted. In the repair step, the distance between the upper surface of the horizontal member and the lower end surface of the support member is adjusted by the connecting portion.

[0097] [Note 12] In the roof truss repair method described in Appendix 11, the connecting portion comprises a first shaft portion extending in a direction perpendicular to the upper surface of the horizontal member and fixed to the horizontal member, a second shaft portion extending in a direction perpendicular to the lower end surface of the support member and fixed to the support member, and a connecting member connecting the first shaft portion and the second shaft portion. The connecting member engages with the first shaft portion and the second shaft portion by a screw structure and is configured such that the first shaft portion and the second shaft portion move closer to each other by rotation in a first direction. A gap is provided between the upper surface of the horizontal member and the lower end surface of the support member, and one or more spacers are arranged in the gap to fill the gap. The spacer is divided into a first spacer and a second spacer with respect to a line perpendicular to the rotational axis of the connecting member. In the modification process, one of the first spacer and the second spacer is removed, and with the other spacer positioned in the gap, the distance between the upper surface of the horizontal member and the lower end surface of the support member is adjusted by rotating the connecting member. [Explanation of Symbols]

[0098] D1...First direction, S...Gap, 1...Building, 2...Roof, 2A...First roof surface, 2B...Second roof surface, 3...Ridge, 5...Frame, 8...Roof truss structure, 11...Horizontal member, 11A...Intermediate section, 11B...Top surface, 11C...First recess, 12...Bridge member, 12A...Bottom end surface, 12B...Second recess, 13...Connection section, 14...Ridge member, 15...Sloping member, 16...Eaves-side horizontal member, 21...First shaft section, 22...First fixing section, 23...First male screw section, 25...Second shaft section 26...Second fixing part, 27...Second male thread part, 31...Connecting member, 32...First female thread part, 33...Second female thread part, 40...Spacer, 41...First spacer, 42...First spacer body part, 43...First spacer fixing part, 44...First notch part, 44A...First notch surface, 45...Second spacer, 46...Second spacer body part, 47...Second spacer fixing part, 48...Second notch part, 48A...Second notch surface, 50...Tool, 51...Tool head.

Claims

1. Horizontal members and A support member perpendicular to the horizontal member and connected to the upper surface of the horizontal member, A connecting portion that connects the horizontal member and the support member, It comprises two gradient members, The two gradient members are positioned opposite each other with respect to the bundle member. Each of the two gradient members is directly or indirectly connected at its upper end to the upper end of the support member, and at its lower end or near its lower end, it is directly or indirectly connected to the end of the horizontal member. The aforementioned connection part is A first shaft portion extending in a direction perpendicular to the upper surface of the horizontal member and fixed to the horizontal member, A second shaft portion extending in a direction perpendicular to the lower end surface of the bundle member and fixed to the bundle member, The device comprises a connecting member that connects the first shaft portion and the second shaft portion, The connecting member is configured to engage with the first shaft portion and the second shaft portion by a screw structure, and to move the first shaft portion and the second shaft portion closer to each other by rotation in the first direction. The connecting portion connects the horizontal member and the support member in such a way that the distance between the upper surface of the horizontal member and the lower end surface of the support member can be adjusted. Roof structure.

2. The first shaft portion has a first fixing portion fixed to the horizontal member and a first male threaded portion exposed from the horizontal member. The second shaft portion has a second fixing portion fixed to the bundle member, and a second male thread portion exposed from the bundle member and having a reverse thread structure with respect to the first male thread portion. The connecting member has a first female threaded portion that engages with the first male threaded portion and a second female threaded portion that engages with the second male threaded portion. The roof truss structure according to claim 1.

3. The external shape of the connecting member in a plane perpendicular to the axis of rotation of the connecting member is polygonal. The roof truss structure according to claim 2.

4. The upper surface of the horizontal member is provided with a first recess in which the first shaft portion is arranged. The lower end surface of the bundle member is provided with a second recess in which the second shaft portion is arranged. The lower part of the connecting member is housed in the first recess, The upper part of the connecting member is housed in the second recess. The roof truss structure according to claim 1.

5. A gap is provided between the upper surface of the horizontal member and the lower end surface of the support member. One or more spacers are placed in the gap to fill the gap. The roof truss structure according to claim 1.

6. The spacer is divided into a first spacer and a second spacer, with a line perpendicular to the rotational axis of the connecting member as the boundary. The roof truss structure according to claim 5.

7. The first spacer has a first notch, The second spacer has a second notch, The first notch is configured such that, when the first spacer is positioned in the gap, a space is provided between the side surface of the connecting member and the first notch surface of the first notch for a tool head to rotate the connecting member to enter. The second notch is configured such that, when the second spacer is positioned in the gap, a space is provided between the side surface of the connecting member and the second notch surface of the second notch for a tool head to rotate the connecting member to enter. The roof truss structure according to claim 6.

8. A building comprising the roof truss structure described in any one of Claims 1 to 7.

9. A building having a roof truss structure, The aforementioned roof structure is, Horizontal members and A support member perpendicular to the horizontal member and connected to the upper surface of the horizontal member, It includes a connecting portion that connects the horizontal member and the support member, The connecting portion connects the horizontal member and the support member in such a way that the distance between the upper surface of the horizontal member and the lower end surface of the support member can be adjusted. architecture.

10. Furthermore, it is equipped with two gradient members, The two gradient members are positioned opposite each other with respect to the bundle member. Each of the two gradient members is directly or indirectly connected at its upper end to the upper end of the support member, and at its lower end or near its lower end to the end of the horizontal member. The building described in claim 9.

11. A method for repairing roof truss structures, This includes a renovation process for modifying the aforementioned roof structure, The aforementioned roof structure is, Horizontal members and A support member perpendicular to the horizontal member and connected to the upper surface of the horizontal member, It includes a connecting portion that connects the horizontal member and the support member, The connecting portion is configured to connect the horizontal member and the support member in such a way that the distance between the upper surface of the horizontal member and the lower end surface of the support member can be adjusted. In the aforementioned modification process, the distance between the upper surface of the horizontal member and the lower end surface of the support member is adjusted by the connecting portion. Methods for repairing roof trusses.

12. The aforementioned connection part is A first shaft portion extending in a direction perpendicular to the upper surface of the horizontal member and fixed to the horizontal member, A second shaft portion extending in a direction perpendicular to the lower end surface of the bundle member and fixed to the bundle member, The device comprises a connecting member that connects the first shaft portion and the second shaft portion, The connecting member is configured to engage with the first shaft portion and the second shaft portion by a screw structure, and to move the first shaft portion and the second shaft portion closer to each other by rotation in the first direction. A gap is provided between the upper surface of the horizontal member and the lower end surface of the support member. One or more spacers are placed in the gap to fill the gap. The spacer is divided into a first spacer and a second spacer, with a line perpendicular to the rotational axis of the connecting member as the boundary. In the modification process, one of the first spacer and the second spacer is removed, and with the other spacer positioned in the gap, the distance between the upper surface of the horizontal member and the lower end surface of the support member is adjusted by rotating the connecting member. The method for repairing a roof structure according to claim 11.

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