Jointing structure and jointing method

Abstract

To provide a joining structure and a jointing method that reduce the amount of filler used, save labor during construction, and achieve high strength.SOLUTION: A jointing structure 100 has a beam 1, an extension member 2 extending from the beam 1, a plate member 3 having a through hole 4 as a recess formed in a plate surface and attached to the beam 1, an insertion member 5 having an insertion body part 50 shaped along a cylindrical form, and a filler material 6 filled in the through hole 4. The insertion body part 50 has an outer diameter smaller than the inner diameter of the through hole 4, is inserted into the through hole 4, and its axial direction is arranged along the axial direction of the through hole 4. The extension member 2 is inserted into the cylinder of the insertion body part 50 in the through hole 4, and the extension member 2 and the insertion body part 50 are embedded in the filler material 6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a joining structure and a joining method. [Background technology]

[0002] Patent Document 1 discloses a joint structure. This joint structure includes a beam, a protruding member (stud) fixed to the beam and protruding from the upper surface of the beam, a wooden floor slab in which the stud is inserted into a through hole formed in the vertical direction while supported by the beam, and a filler material filled into the through hole. The through hole of the wooden floor slab is formed in a cylindrical shape. A steel pipe whose outer diameter is approximately the same as the inner diameter of the through hole is inserted into the through hole. The steel pipe is attached to the through hole in advance before placing the wooden floor slab on the beam. When the wooden floor slab is placed on the beam, a stud is arranged inside the through hole and the steel pipe. The through hole and the steel pipe are filled with slab concrete. According to this joint structure, a horizontal force is transmitted between the beam and the wooden floor slab via the stud and the slab concrete filled into the through hole of the wooden floor slab.

[0003] Patent Document 2 discloses a beam-based wooden floor joint structure. The beam-based wooden floor joint structure includes a beam having a stud as a shear force transmitting member protruding upward from the top of the beam, a wooden floor having a plurality of long wooden boards stacked in the width direction of the floor, an end of which is placed on the top of the beam, a recess formed at the end of the wooden floor by shifting the ends of the plurality of long wooden boards in the longitudinal direction and facing the stud, and a filler that fills the recess and has the stud embedded therein. In this beam-based wooden floor joint structure, the end of the wooden floor and the beam can be easily joined via the filler and the stud. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-31787 A [Patent Document 2] Patent Publication No. 2022-146650 Summary of the Invention [Problem to be solved by the invention]

[0005] For example, as described in Patent Document 2, in a joint structure including a rod-shaped beam, an extension member such as a stud fixed to the beam and extending from the upper surface of the beam, a plate member having a through hole penetrating the plate surface and placed on the beam, and a filler filled in the through hole, in which the extension member inserted in the through hole is buried in the filler, the joint of the joint structure consisting of the extension member fixed to the beam, the plate member, and the filler between the beam and the plate member is easily destroyed due to the difference in rigidity and strength between the beam and the plate member. For example, the rigidity and strength of the joint may be increased by increasing the area (bearing area) that receives the load at the joint and reducing the load applied per unit area. For example, the bearing area may be increased by increasing the opening diameter of the through hole to increase the amount of filler used and increasing the contact area between the plate member and the filler. However, increasing the amount of filler used may increase the amount of filler used, which may lead to an increase in the cost of constructing the joint structure. Furthermore, even if the contact area between the plate member and the filler is increased, the filler may be destroyed, for example by cracking, and a sufficient pressure-bearing area may not be ensured.

[0006] In the case where an insert member such as a steel pipe is further inserted into the through hole as in the joint structure described in Patent Document 1, the support pressure acting on the joint can be dispersed by the steel pipe. However, when an insert member whose outer diameter is approximately the same as the inner diameter of the through hole is used as in the case of the steel pipe in the joint structure described in Patent Document 1, the rigidity and strength of the joint structure may vary due to the variation in the dimensional accuracy of the insert member and the through hole. In addition, the workability when constructing the joint structure may vary. If high dimensional accuracy is required to reduce these variations, the desired dimensional accuracy may not be obtained at the construction site when the processing to form the through hole in the plate member is performed in advance at a factory, or the workability may deteriorate, which may become an obstacle to labor saving in construction.

[0007] For these reasons, it is desirable to provide a joining structure and joining method that can reduce the amount of filler used, reduce labor during construction, and achieve high strength.

[0008] The present disclosure has been made in consideration of the above-mentioned circumstances, and its purpose is to provide a joining structure and joining method that reduce the amount of filler used, saves labor during construction, and achieves high strength. [Means for solving the problem]

[0009] In order to achieve the above object, the joining structure according to the present disclosure includes: Beams and An extension member fixed to the beam and extending from the beam; A plate member having a recess formed on a plate surface and attached to the beam; An insertion member having an insertion body portion shaped to conform to a cylindrical shape; A filler material filled in the recess; Equipped with The insertion body portion is The outer diameter is smaller than the inner diameter of the recess, inserted into the recess, The axial direction is aligned with the axial direction of the recess, The extension member is inserted into the tube of the insertion body portion in the recess, The extension member and the insertion body are embedded in the filler material.

[0010] In the joining structure according to the present disclosure, The insertion body portion is A skeleton portion having a shape that conforms to the cylindrical shape; a radially extending opening; In the insertion body portion, the aperture ratio of the opening may be 70% or more and 90% or less.

[0011] In the joining structure according to the present disclosure, The insertion body may be helically shaped.

[0012] In the joining structure according to the present disclosure, The pitch of the spiral shape may be 10 mm or more and 30 mm or less.

[0013] In the joining structure according to the present disclosure, The insertion body may be a mesh member.

[0014] In the joining structure according to the present disclosure, The insertion member may have an annular portion at a lower portion of the insertion body.

[0015] In the joining structure according to the present disclosure, The recess is circular, The tubular shape along which the insertion body extends may be a cylindrical shape.

[0016] In the joining structure according to the present disclosure, The insertion member may have an exposed portion that is not embedded in the filling material.

[0017] In the joining structure according to the present disclosure, In the extending direction of the recess, the length of the insertion body portion may be ⅔ or more of the length of the extending member.

[0018] In the joining structure according to the present disclosure, In an extension direction of the recess, a length of the extension member may be equal to or greater than half the length of the recess.

[0019] In the joining structure according to the present disclosure, The board member may be a wood panel.

[0020] In the joining structure according to the present disclosure, The insert member does not have to be fixed directly to the beam.

[0021] In the joining structure according to the present disclosure, The filler may be a non-shrink mortar.

[0022] In order to achieve the above object, the bonding method according to the present disclosure includes: An extension member is fixed so as to extend from the beam; forming a recess in a plate member, and attaching the extension member to the beam in a state in which the extension member is inserted into the recess; An insertion member having an insertion body portion shaped to conform to a cylindrical shape is inserted into the recess, and the extension member is inserted into the cylindrical insertion body portion; A filler is filled into the recess to embed the extension member and the insertion body portion; The insertion body portion is The outer diameter is smaller than the inner diameter of the recess; The axial direction is aligned with the axial direction of the recess. Effect of the Invention

[0023] According to the present disclosure, it is possible to provide a joining structure and a joining method that reduce the amount of filler used, reduce labor during construction, and achieve high strength. [Brief description of the drawings]

[0024] [Figure 1] FIG. 2 is a cross-sectional view of the joint structure according to the embodiment. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 13 is a perspective view of another insert member. [Diagram 5] FIG. 11 is a cross-sectional view of a joint structure according to another embodiment. [Figure 6] FIG. 13 is a perspective view of another insert member. [Figure 7] FIG. 13 is a perspective view of another insert member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] A joining structure and a joining method according to an embodiment of the present invention will be described with reference to the drawings.

[0026] 1 shows a cross-sectional view of a joint structure 100 according to this embodiment. First, an overview of the joint structure 100 and the joining method according to this embodiment will be described.

[0027] The joint structure 100 includes a beam 1, an extension member 2 extending from the beam 1, a plate member 3 having a through hole 4 as a recess formed in the plate surface and attached to the beam 1, an insertion member 5 having an insertion body portion 50 shaped to conform to a cylindrical shape, and a filler material 6 filled in the through hole 4. The insertion body portion 50 has an outer diameter smaller than the inner diameter of the through hole 4, is inserted into the through hole 4, and is arranged with its axial direction aligned with the axial direction of the through hole 4. The extension member 2 is inserted into the cylinder of the insertion body portion 50 in the through hole 4, and the extension member 2 and the insertion body portion 50 are embedded in the filler material 6.

[0028] The joint structure 100 can reduce the amount of filler 6 used, reduce labor during construction, and achieve high strength.

[0029] The joining method of this embodiment involves fixing the extension member 2 so as to extend from the beam 1, forming a through hole 4 as a recess in the plate member 3, attaching the plate member 3 to the beam 1 with the extension member 2 inserted into the through hole 4, inserting the insertion body portion 50 of the insertion member 5 having an insertion body portion 50 shaped to conform to the cylindrical shape into the through hole 4, and inserting the extension member 2 into the cylindrical insertion body portion 50, filling the through hole 4 with filler 6 to embed the extension member 2 and the insertion body portion 50, making the outer diameter of the insertion body portion 50 smaller than the inner diameter of the through hole 4 and arranging the axial direction along the axial direction of the through hole 4.

[0030] The joining method according to this embodiment can reduce the amount of filler 6 used, and can construct a joining structure 100 that saves labor during construction and achieves high strength.

[0031] The joining structure 100 and the joining method according to this embodiment will be described in detail below.

[0032] The joint structure 100 is a part of the structure of a building such as a house or a building. One example of a building is a steel-framed building. The building may be composed of a reinforced concrete foundation, a framework structure made up of framework members such as columns and beams, and a superstructure having plate-like members (panels) forming walls, floors, etc. and fixed to the foundation. The framework members and panels may be standardized in advance. In this case, the framework members and panels can be manufactured in advance in a factory and transported to a construction site, where the building can be assembled.

[0033] As shown in Figure 1, the joint structure 100 comprises a beam 1, an extension member 2 extending from the upper surface of the beam 1, a plate member 3 having a through hole 4 and mounted in a state on the beam 1, an insertion member 5 having an insertion main body portion 50, and a filler material 6 filled in the through hole 4.

[0034] The beam 1 is a skeletal member of a building and is a long member. The beam 1 is arranged along the horizontal direction. The beam 1 is, for example, an H-shaped steel, a channel steel, a wooden material (wood beam), or a columnar member (RC beam) made of reinforced concrete. In this embodiment, as an example, the case where the beam 1 is an H-shaped steel having a web 11 and a pair of flanges 12, 13 is described. FIG. 1 illustrates a case where the beam 1 is arranged so that the web 11 is arranged along the vertical direction and the flanges 12, 13 are arranged along the horizontal direction. In the example of FIG. 1, the flange 12 is arranged above the flange 13 in the vertical direction. Hereinafter, the upper or upper side in the vertical direction will be simply referred to as the upper or upper side, and the lower or lower side in the vertical direction will be simply referred to as the lower or lower side, etc.

[0035] The extension member 2 is a rod-shaped member fixed, for example, by screwing, fitting or welding, to the upper surface of the flange 12, i.e., the upper surface of the beam 1. The extension member 2 is fixed to the upper surface of the rod-shaped beam 1 so as to extend upward from the upper surface of the beam 1.

[0036] An example of the extension member 2 is a rod-shaped member or a plate-shaped member. For example, the extension member 2 may have an X-shaped cross section intersecting the extending direction of the extension member 2. A disk-shaped head whose plate surface intersects the extending direction of the extension member 2 may be provided at the top of the extension member 2. When the extension member 2 is rod-shaped, the extension member 2 may be, for example, a steel rod, more specifically, a headless stud or a headed stud. In this embodiment, the extension member 2 is exemplified as a headed stud having a rod-shaped portion 20 fixed at the lower end to the upper surface of the flange 12 and extending upward, and a head 21 at the upper end of the rod-shaped portion 20, the head 21 being larger in diameter than the rod-shaped portion 20 along the horizontal direction. Note that the head 21 is not essential to the extension member 2. The surface of the rod-shaped portion 20 may be uneven.

[0037] The extension members 2 are arranged on the upper surface of the beam 1, for example, at regular intervals.

[0038] The plate member 3 is a plate-like member (panel) that forms the floor or R-floor of a building. An example of the plate member 3 is an aerated lightweight concrete panel (ALC panel) or a wooden panel. In this embodiment, the plate member 3 is cross-laminated timber (CLT: Cross Laminated Timber). The plate member 3 is attached by being placed on the beam 1. The plate member 3 is arranged so that the plate surface is aligned in the horizontal direction. When the plate member 3 is a wooden panel, laminated veneer lumber (LVL: Laminated Veneer Lumber), engineered wood, etc. can be used in addition to cross-laminated timber.

[0039] The plate member 3 has a through hole 4 formed therein, penetrating the plate surface. The through hole 4 is formed along a direction perpendicular to the plate surface of the plate member 3. When the plate member 3 is placed on the beam 1, the axis of the through hole 4 is aligned along the vertical direction. In other words, the through hole 4 is formed such that, when the plate member 3 is placed on the beam 1, the extension direction of the through hole 4 is aligned along the vertical direction.

[0040] The through hole 4 may be straight, or may have a diameter expanded in part. The through hole 4 may have a circular cross section intersecting the vertical direction, that is, a circular cross section as viewed from above. The through hole 4 may also have a rectangular cross section. In the present cylindrical embodiment, the upper part 41 of the through hole 4 has a larger diameter than the lower part 42.

[0041] A plurality of through holes 4 may be formed in the plate member 3. The through holes 4 are formed at positions corresponding to the arrangement of the extension members 2 on the beam 1 when the plate member 3 is placed on the beam 1. The extension members 2 are inserted into the through holes 4. That is, the plate member 3 is placed on the beam 1 with the extension members 2 inserted in the through holes 4.

[0042] It is preferable that the axial direction of the extension member 2 is aligned with the axial direction of the through hole 4. It is preferable that the axial center of the extension member 2 and the axial center of the through hole 4 are arranged to overlap, but the respective axial centers may be offset. It is preferable that the length of the extension member 2 is 50% or more of the length of the through hole 4, i.e., the thickness of the plate member 3. That is, in the extension direction of the through hole 4, it is preferable that the length of the extension member 2 is half or more of the length of the through hole 4. It is also preferable that the extension member 2 does not protrude from the through hole 4, and it is more preferable that it does not protrude from the lower part 42 of the hole.

[0043] The insertion member 5 has an insertion body portion 50 shaped to conform to a cylindrical shape, and is a reinforcing tool for the joint structure 100. The insertion member 5 may be made of an iron alloy (reinforcing bar) such as steel, resin, glass fiber, or the like.

[0044] The tubular shape along which the insertion body 50 is fitted may be a cylindrical shape, or the insertion body 50 may be a rectangular tubular shape.

[0045] The insertion body 50 is inserted into the through hole 4. The insertion body 50 is arranged with its axial direction aligned with the axial direction of the through hole 4. The insertion body 50 (insertion member 5) is not directly fixed to the beam 1. The insertion member 5 stands on its own in the through hole 4 or is supported by the inner wall of the through hole 4, and maintains a state in which its axial direction is aligned with the axial direction of the through hole 4. The insertion member 5 is inserted into the through hole 4 and placed on the beam 1 to complete the installation.

[0046] The extension member 2 is inserted inside the shape of the insertion main body portion 50 that conforms to the cylindrical shape (hereinafter simply referred to as the cylindrical interior of the insertion main body portion 50), and the extension member 2 is inserted into the cylindrical interior of the insertion main body portion 50 in the through hole 4. That is, with the plate member 3 placed on the beam 1, the insertion member 5 is inserted into the through hole 4 while the insertion main body portion 50 is inserted so that the extension member 2 is inserted into the cylindrical interior of the insertion main body portion 50.

[0047] It is preferable that the lower end of the insertion body portion 50 abuts against the upper surface of the flange 12. This makes it easier to increase the strength of the joint structure 100.

[0048] The outer diameter of the insertion body portion 50 is smaller than the inner diameter of the hole lower portion 42 of the through-hole 4. The outer diameter of the insertion body portion 50 is preferably 75% or more and 95% or less of the inner diameter of the hole lower portion 42.

[0049] The length of the insertion body portion 50 in the axial direction, i.e., the vertical direction (hereinafter simply referred to as the length of the insertion body portion 50) is preferably 2 / 3 or more of the length of the extension member 2. That is, in the extension direction of the through hole 4, the length of the insertion body portion 50 is preferably 2 / 3 or more of the length of the extension member 2. In addition, the length of the insertion body portion 50 is preferably such that the extension member 2 does not protrude from the through hole 4. More preferably, the length of the insertion body portion 50 is equal to or more than the length of the extension member 2 and less than the length of the through hole 4. FIG. 1 shows a case where the upper end portion of the insertion body portion 50 is located above the head 21 of the extension member 2 and below the hole upper portion 41 of the through hole 4.

[0050] FIG. 2 shows a perspective view of the insertion member 5. The insertion body 50 preferably has a skeleton 51 having a shape that conforms to a cylindrical shape and an opening 52 penetrating in a radial direction, as shown in FIG. 2. In this embodiment, the skeleton 51 is formed of a spiral rib formed by forming a steel material into a spiral shape that conforms to a cylindrical shape. The cross section of the skeleton 51 can be circular or rectangular. In the insertion body 50, the opening ratio of the opening 52 is preferably 70% or more and 90% or less. In the insertion body 50 of the insertion member 5 shown in FIG. 2, the skeleton 51 is formed in a spiral shape, and the opening 52 is between the upper and lower spiral parts in the vertical direction in the spiral skeleton 51.

[0051] The opening rate (%) of the opening 52 is the value obtained by dividing the opening area of ​​the opening 52 in the cylindrical shape along which the skeleton 51 fits by the area of ​​the side of the cylindrical shape along which the skeleton 51 fits, and multiplying this value by 100.

[0052] When the skeletal portion 51 of the insertion body 50 has a spiral shape, the pitch of the spiral shape is preferably 10 mm or more and 30 mm or less when the pitch is constant. When the skeletal portion 51 is a spiral reinforcing bar, the diameter of the reinforcing bar may be, for example, 2 mm or more and 5 mm or less.

[0053] As shown in FIG. 1 and FIG. 3, the through hole 4 is filled with a filler 6. The filler 6 is, for example, grout material, non-shrink mortar (a mixture of cement, water, fine aggregate, and admixtures), concrete (a mixture of cement, water, fine aggregate, coarse aggregate, and admixtures), and epoxy resin. Among these, non-shrink mortar is particularly suitable as the filler 6. This is because non-shrink mortar has little drying shrinkage and is less likely to cause gaps in the filled portion of the through hole 4. If gaps occur in the filled portion of the through hole 4, initial deformation becomes large, but this can be prevented by using non-shrink mortar as the filler 6. In addition, since only fine aggregate is used as an aggregate, non-shrink mortar has good filling properties compared to concrete, as it does not get caught by the skeleton 51 when filling the through hole 4. In addition, since non-shrink mortar is a non-combustible material, it is advantageous in terms of fire resistance performance compared to resin-based fillers.

[0054] 1, the filler 6 is filled on both the outside and the inside of the insertion body portion 50 in the through hole 4. FIG. 1 shows a case where the filler 6 is filled in the lower portion 42 of the through hole 4.

[0055] The extension member 2 and the insertion body portion 50 of the insertion member 5 are embedded in the filler material 6. The upper end portion of the insertion member 5 is allowed to be exposed from the filler material 6. It is preferable that the extension member 2 and the insertion body portion 50 are embedded in the filler material 6 as shown in FIG.

[0056] The above is the structure of the joint structure 100. Below, it will be described how the joint structure 100 can reduce the amount of filler 6 used, can save labor during construction, and can achieve high strength.

[0057] As shown in FIG. 1 and as described above, in the joint structure 100, the extension member 2 and the plate member 3 fixed to the beam 1 are fixed to each other by the filler material 6 filled in the through hole 4. In this case, in the joint structure 100, the insertion body portion 50 of the insertion member 5 is inserted into the through hole 4, and the extension member 2 is inserted into the tube of the insertion body portion 50. The extension member 2 and the insertion body portion 50 are embedded in the filler material 6. The insertion body portion 50 (insertion member 5) is not directly fixed to the beam 1. The outer diameter of the insertion body portion 50 is smaller than the inner diameter of the lower portion 42 of the through hole 4.

[0058] First, when constructing the joining structure 100, the outer diameter of the insertion main body portion 50 is smaller than the inner diameter of the lower portion 42 of the through hole 4, so that the insertion main body portion 50 can be easily inserted into the through hole 4 without increasing the dimensional accuracy of the through hole 4, resulting in good workability and reduced labor during construction.

[0059] In addition, since the outer diameter of the insertion body portion 50 is smaller than the inner diameter of the hole lower portion 42 of the through hole 4, the filler 6 is filled inside the tube of the insertion body portion 50 and outside the tube of the insertion body portion 50 in the through hole 4. As a result, the insertion body portion 50 is located inside the filling layer of the filler 6, i.e., between the inner wall of the through hole 4 and the extension member 2, and reinforces the filling layer of the filler 6. Therefore, the filling layer of the filler 6 becomes strong, and the extension member 2 and the plate member 3 fixed to the beam 1 are firmly fixed to each other by the filler 6 filled in the through hole 4, and the joining structure 100 can be made to have high strength.

[0060] In more detail, by making the filling layer of the filler 6 stronger by being reinforced by the insertion body 50, the effective area (bearing area) capable of receiving a load in the horizontal direction at the joint consisting of the through hole 4 of the plate member 3, the extension member 2 of the beam 1, and the filling layer of the filler 6 is enlarged, and the load applied per unit area is reduced, thereby increasing the rigidity and strength of the joint structure 100. This is because, by making the filling layer of the filler 6 stronger by being reinforced by the insertion body 50, the filling layer of the filler 6 supported by the extension member 2, which is relatively thinner than the inner diameter of the through hole 4, is able to support the entire inner surface of the through hole 4 against the load transmitted from the inner wall surface of the through hole 4. If the filling layer of the filler 6 is not reinforced by the insertion body 50 and is fragile, the load transmitted from the inner wall surface of the through hole 4 will be locally concentrated in a region along the direction of the load transmission in the filling layer of the filler 6 between the inner wall surface of the through hole 4 and the extension member 2. Then, destruction of this region and the part of the inner wall surface of the through hole 4 in contact with this region will easily progress.

[0061] In particular, when the plate member 3 is a wooden panel such as an orthogonal laminated timber board, and the filler material 6 is a material having higher rigidity and strength than a wooden material such as grout, if a load is applied in the horizontal direction to the joint formed by the through hole 4 of the plate member 3, the extension member 2 of the beam 1, and the filling layer of the filler material 6, the relatively weak through hole 4 of the plate member 3 is likely to break due to the difference in rigidity and strength between the plate member 3 and the filling material 6. However, the insertion body 50 reinforces the filling layer of the filler material 6 from the inside and increases the bearing area, thereby making the joint structure 100 strong, and even if the difference in rigidity and strength between the plate member 3 and the filling material 6 is large, the through hole 4 of the plate member 3 is less likely to break.

[0062] As described above, in the joint structure 100, the filling layer of the filler 6 is reinforced and made strong by the insertion body portion 50, so that the bearing area can be increased without increasing the inner diameter of the through hole 4. Therefore, there is no need to increase the inner diameter of the through hole 4 to increase the amount of the filler 6 used, and the amount of the filler 6 used can be reduced.

[0063] When the outer diameter of the insertion body portion 50 is 75% or more and 95% or less of the inner diameter of the lower hole portion 42 of the through hole 4, the thickness of the outer filling portion 62 of the filler 6 filled in the through hole 4 on the outside of the tube of the insertion body portion 50 in the through hole 4 in the radial direction of the through hole 4 becomes appropriately thick. This maintains the strength of the outer filling portion 62 appropriately. This allows the joining structure 100 to have a higher strength.

[0064] Here, the insertion body portion 50 has an opening 52. As a result, in the filler 6 filled in the through hole 4, an inner filling portion 61 inside the tube of the insertion body portion 50 and an outer filling portion 62 outside the tube of the insertion body portion 50 in the through hole 4 are connected via the opening 52, and the filling layer of the filler 6 becomes stronger. This can make the joining structure 100 stronger.

[0065] When the opening ratio of the openings 52 is 70% or more and 90% or less, the connection between the inner filling portion 61 and the outer filling portion 62 of the filler 6 filled in the through hole 4 via the openings 52 can be stronger. This can increase the strength of the joint structure 100.

[0066] In addition, if the opening rate of the opening 52 is 70% or more and 90% or less, the filler 6 can easily flow through the opening 52 when filling the through hole 4, so that the filler 6 can easily flow into the inside of the tube of the insertion main body portion 50 and into the outside of the tube of the insertion main body portion 50 within the through hole 4, which improves the workability of the filler 6 and may reduce the labor required for construction.

[0067] In particular, when the skeleton 51 of the insertion body 50 has a helical shape such as a spiral streak, if the pitch of the helical shape is 10 mm or more and 30 mm or less, the connection between the inner filling part 61 and the outer filling part 62 via the opening 52 can be made stronger. In addition, since the filler 6 can easily pass through the pitch (opening 52) of the helical shape of the skeleton 51 and flow, the workability when filling the filler 6 into the through hole 4 is improved, and there are cases where labor saving can be achieved during work.

[0068] When the through hole 4 is circular and the tubular shape along which the insertion body portion 50 extends is cylindrical, the load is more easily distributed in the radial direction of the through hole 4 between the inner wall of the through hole 4, the filler material 6, the insertion body portion 50, and the extension member 2, so that the joint structure 100 can have a higher strength.

[0069] In the joint structure 100, the extension member 2 and the insertion body portion 50 are embedded in the filler material 6, and if the length of the extension member 2 in the extension direction of the through hole 4 is half or more the length of the through hole 4, the extension member 2 is sufficiently held in the filler material 6, and the joint structure 100 can have sufficiently high strength.

[0070] Furthermore, when the length of the insertion body portion 50 is 2 / 3 or more of the length of the extension member 2 in the extending direction of the through hole 4, the filler 6 is sufficiently reinforced, and the joint structure 100 has a sufficiently high strength. Note that the load applied in the horizontal direction at the joint portion formed of the through hole 4 of the plate member 3, the extension member 2 of the beam 1, and the filling layer of the filler 6 is transmitted particularly to the vicinity of the base portion of the extension member 2 (the end portion on the side close to the beam 1). Therefore, by setting the length of the insertion body portion 50 to 2 / 3 or more of the length of the extension member 2 in the extending direction of the through hole 4 and reinforcing the filler 6 near the base portion of the extension member 2, the joint structure 100 has a sufficiently high strength.

[0071] If the length of the insertion body portion 50 is greater than or equal to the length of the extension member 2 and less than the length of the through hole 4, the insertion body portion 50 can overall reinforce the filler 6 near the extension member 2, thereby making the joint structure 100 even stronger.

[0072] In addition, if the length of the insertion body portion 50 is less than 1 / 3 of the length of the through hole 4, the same effect can be obtained as when the length is 1 / 3 or more of the length of the through hole 4 by increasing the cross-sectional area of ​​the insertion body portion 50 relative to the filler 6.

[0073] By inserting the insert body 50 into the through hole 4 and arranging it along the extending direction of the through hole 4 and the extending member 2, the filler 6 is reinforced along the extending direction of the through hole 4 and the extending member 2. This distributes the support pressure of the plate member 3, and the strength of the joint structure 100 can be increased. In particular, when the plate member 3 is a wooden panel, there are individual differences in strength and rigidity for each sawn board (lamina) constituting the layer, and in a wooden panel in which sawn boards (lamina) are laminated at right angles, the weak axis and strong axis differ for each layer. However, in the joint structure 100, the load can be distributed and received by expanding the support area, so that a high strength can be stably achieved even if the plate member 3 in which the through hole 4 is formed has variations in strength and rigidity.

[0074] Furthermore, if the insertion body 50 (insertion member 5) is fixed directly to the beam 1, when a load is applied to the joint structure 100, a force compressing the filler 6 is generated between the insertion body 50 (insertion member 5) and the plate member 3, which may destroy the filler 6 and reduce the bearing area. For this reason, it is preferable not to fix the insertion body 50 (insertion member 5) directly to the beam 1.

[0075] When the extension member 2 has a head 21, the head 21 can engage with the filler 6 in the extension direction of the extension member 2. Therefore, when a load is applied in the horizontal direction to a joint formed of the through hole 4 of the plate member 3, the extension member 2 of the beam 1, and the filling layer of the filler 6, the head 21 can engage with the filler 6, and the joint structure 100 can have even higher strength.

[0076] In this manner, a joining structure and joining method can be provided that can reduce the amount of filler used, save labor during construction, and achieve high strength.

[0077] [Another embodiment] (1) In the above embodiment, as shown in Fig. 1, the case where the insertion body portion 50 of the insertion member 5 is embedded in the filler 6 has been described. Also, it has been described that the upper end portion of the insertion member 5 is allowed to be exposed from the filler 6.

[0078] As shown in FIG. 4, the insertion member 5 may have an exposed portion 55 extending from the upper end of the insertion body portion 50 along the extension direction of the insertion body portion 50. As shown in FIG. 5, the exposed portion 55 has its tip exposed from the upper surface of the filling layer of the filler 6. This makes it possible to recognize that the insertion member 5 is inserted into the through hole 4 by visually checking the exposed portion 55 after the construction of the joint structure 100, even when the insertion member 5 is inserted into the through hole 4, the through hole 4 is filled with the filler 6, and the insertion body portion 50 is buried in the filler 6 to construct the joint structure 100. In other words, it becomes easier to check the construction after the joint structure 100 is constructed.

[0079] (2) In the above embodiment, as shown in Fig. 2, the insertion body 50 of the insertion member 5 has the skeletal portion 51, and the skeletal portion 51 has a spiral shape. However, the insertion body 50 is not limited to this embodiment.

[0080] 6, the insertion body 50 may have an annular portion 59 having a ring shape or a partial ring shape (for example, a C-shape) located at the lower end (one example of a lower portion) of the insertion body 50 in addition to the skeleton portion 51. The annular portion 59 reinforces the filler 6 (see FIG. 1) near the base portion of the extension member 2, and the joining structure 100 can have a higher strength.

[0081] It is preferable that at least a portion of the annular portion 59 abuts against the upper surface of the flange 12. This can further increase the strength of the joining structure 100. It is preferable that the length along the circumferential direction of the portion where the annular portion 59 abuts against the upper surface is 50% or more of the length of the insertion body portion 50. This makes it easier to increase the strength of the joining structure 100. It is preferable that the annular portion 59 is parallel to the upper surface of the flange 12. This makes it easier for the annular portion 59 to abut against the upper surface of the flange 12.

[0082] (3) In the above embodiment, as shown in Fig. 2, the insertion body 50 of the insertion member 5 has the skeletal portion 51, and the skeletal portion 51 has a spiral shape. However, the insertion body 50 is not limited to this embodiment.

[0083] In the insertion body 50, the skeleton 51 may be a mesh member formed in a mesh shape as shown in Fig. 7. In this case, the openings 52 are openings of the mesh of the skeleton 51. Fig. 7 shows an example in which the insertion member 5 further has an annular annular portion 59 arranged at the lower end of the insertion body 50 and an annular annular portion 58 arranged at the upper end of the insertion body 50. Although not shown, the skeleton 51 may be a cylindrical member such as a steel pipe having a plurality of through holes provided as the openings 52 in the pipe wall.

[0084] In addition, when the skeletal portion 51 is a mesh member, the opening rate (%) of the mesh is the value obtained by dividing the opening area of ​​the mesh in the cylindrical shape along which the skeletal portion 51 follows by the area of ​​the side of the cylindrical shape along which the skeletal portion 51 follows, and multiplying this value by 100.

[0085] (4) In the above embodiment, the extension member 2 extends upward from the upper surface of the beam 1. However, the extension member 2 may extend from any surface of the beam 1.

[0086] (5) In the above embodiment, the beam 1 is an H-shaped steel having a web 11 and a pair of flanges 12, 13, and the extension member 2 is fixed to the beam 1 by screwing, fitting, welding, or the like. If the beam 1 is an RC beam, the extension member 2 may be fixed to the beam 1 by embedding it in the beam 1. Also, if the beam 1 is a wooden beam, the extension member 2 may be fixed to the beam 1 by screwing or driving it in.

[0087] (6) In the above embodiment, when the insertion body 50 of the insertion member 5 has the skeletal portion 51 and the skeletal portion 51 has a spiral shape, it is preferable that the pitch of the spiral shape is constant, and the pitch is 10 mm or more and 30 mm or less. However, the pitch of the spiral shape of the insertion body 50 is not limited to being constant. The pitch of the insertion body 50 may be different between the upper end side and the lower end side of the insertion body 50.

[0088] When the pitch on the upper end side of the insertion body portion 50 is made different from the pitch on the lower end side, it is preferable that the pitch on the lower end side is narrower than the pitch on the upper end side of the insertion body portion 50. This can better reinforce the filler 6 in the vicinity of the base portion of the extension member 2, and can make the joining structure 100 stronger.

[0089] The pitch on the upper end side of the insertion body portion 50 is preferably 10 mm or more and 30 mm or less, and the pitch on the lower end side is preferably 0 mm or more and 10 mm or less.

[0090] It is preferable that the length (length in the extension direction of the through hole 4) of the lower end portion, which has a narrower pitch than the upper end portion of the insertion body portion 50, is less than 1 / 3 of the length of the insertion body portion 50, since this does not significantly impair the workability when filling the filler 6 into the through hole 4.

[0091] In addition, the configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, provided no contradiction arises. Furthermore, the embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be appropriately modified within the scope that does not deviate from the purpose of the present invention. [Industrial Applicability]

[0092] The present invention is applicable to a joining structure and a joining method. [Explanation of symbols]

[0093] 1:Beam 100:Joint structure 11: Web 12: Flange 13: Flange 2: Extension member 20: Rod-shaped part 21:Head 3: Plate member 4:Through hole 41: Upper hole 42: Lower hole 5: Insert 50: Insertion body 51: Skeleton 52: Opening 55:Exposed part 58: Circular section 59: Circular section 6: Filling material 61:Inner filling part 62: Outer filling part

Claims

1. Beams and An extension member fixed to the beam and extending from the beam; A plate member having a recess formed on a plate surface and attached to the beam; An insertion member having an insertion body portion shaped to conform to a cylindrical shape; A filler material filled in the recess; Equipped with The insertion body portion is The outer diameter is smaller than the inner diameter of the recess, inserted into the recess, The axial direction is aligned with the axial direction of the recess, The extension member is inserted into the tube of the insertion body portion in the recess, A joint structure in which the extension member and the insertion body portion are embedded in the filler material.

2. The joining structure according to claim 1 , wherein the recess is a through hole penetrating a plate surface of the plate member.

3. The insertion body portion is A skeleton portion having a shape that conforms to the cylindrical shape; a radially extending opening; The joining structure according to claim 1 or 2, wherein an aperture ratio of the opening in the insertion body portion is 70% or more and 90% or less.

4. The joining structure according to claim 1 or 2, wherein the insertion body portion has a spiral shape.

5. The joint structure according to claim 4 , wherein the pitch of the spiral shape is 10 mm or more and 30 mm or less.

6. The joining structure according to claim 1 or 2, wherein the insertion body portion is a mesh member.

7. The joining structure according to claim 1 or 2, wherein the insertion member has an annular portion at a lower portion of the insertion body portion.

8. The recess is circular, The joining structure according to claim 1 or 2, wherein the tubular shape along which the insertion body portion extends is a cylindrical shape.

9. The joint structure according to claim 1 or 2, wherein the insertion member has an exposed portion that is not embedded in the filler material.

10. The joining structure according to claim 1 or 2, wherein the length of the insertion body portion in the extending direction of the recess is at least ⅔ the length of the extension member.

11. The joint structure according to claim 1 or 2, wherein a length of the extension member in an extending direction of the recess is equal to or greater than half the length of the recess.

12. The joint structure according to claim 1 or 2, wherein the plate member is a wooden panel.

13. The joint structure according to claim 1 or 2, wherein the insert member is not directly fixed to the beam.

14. The joint structure according to claim 1 or 2, wherein the filler is a non-shrink mortar.

15. An extension member is fixed so as to extend from the beam; forming a recess in a plate member, and attaching the extension member to the beam in a state in which the extension member is inserted into the recess; An insertion member having an insertion body portion shaped to conform to a cylindrical shape is inserted into the recess, and the extension member is inserted into the cylindrical insertion body portion; A filler is filled into the recess to embed the extension member and the insertion body portion; The insertion body portion is The outer diameter is smaller than the inner diameter of the recess; A joining method in which the axial direction is aligned with the axial direction of the recess.

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