JP7396623B2 - Dissimilar material joining structure - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies DVD-ROM: Architectural Institute of Japan 2019 Annual Conference (Hokuriku) Academic Lecture Abstracts Architectural Design Presentation Abstracts (published on July 20, 2019) Architectural Institute of Japan 2019 Annual Conference (Hokuriku) ( Date: September 5, 2019)

The present invention relates to a joint structure formed by integrally joining dissimilar materials such as structural steel, concrete, wood, and synthetic resin materials in architectural structures, civil engineering structures, and the like.

In architectural structures, civil engineering structures, etc., structures are constructed in which dissimilar materials such as structural steel, concrete, wood, and synthetic resin materials are combined and bonded. , a composite structure 200 using a headed stud 201 shown in FIGS. 36 and 37, and a joining structure 300 shown in FIGS. 38 and 39 are known.

In the composite structure 200 shown in FIGS. 36 and 37, a plurality of headed studs 201 are welded in an upright state at predetermined intervals on the upper surface of a steel beam 202 that is a structural steel material (H-beam). Concrete material 203 is placed with the top surfaces of studs 201 and steel beams 202 buried therein.

In addition, in the joint structure 300 shown in FIGS. 38 and 39, a plurality of headed studs 301 are arranged at predetermined intervals on both sides of the web 302w of the steel column 302, which is a structural steel material (H-beam steel), and on the outer surface of the flange 302f. The steel columns 302 and headed studs 301 are welded in an upright position, reinforcing bars 303 are arranged around the steel columns 302 and headed studs 301, and concrete material 304 is poured with the steel columns 302, a plurality of headed studs 301, and reinforcing bars 303 buried. has been done.

On the other hand, other conventional techniques related to the present invention include, for example, "beam reinforcing metal fittings" described in Patent Documents 1 and 2. This beam reinforcing metal fitting is used by being attached around a through-hole for pipe insertion, which is made in the web of a steel beam made of H-shaped steel that forms a building structure, and has the function of reinforcing the area around the through-hole. have.

JP 2018-16953 Publication Japanese Patent Application Publication No. 2016-211365

The headed studs 201, 301 used in the composite structure 200 shown in FIGS. 36 and 37 and the joint structure 300 shown in FIGS. , 301a have a low bending rigidity, so that they have the characteristic of transmitting force with some misalignment between the steel beam 202 or the steel column 302 and the concrete materials 203, 304. Therefore, current design methods require a large number of headed studs 201, 301 to compensate for the lack of rigidity. Furthermore, since the minimum height of the headed studs 201 and 301 is approximately 80 mm to 100 mm, a situation arises in which construction is difficult in a narrow joining area.

On the other hand, the beam reinforcing metal fittings described in Patent Documents 1 and 2 have the function of being attached around a through hole for piping insertion made in the web of a steel beam and reinforcing the area around the through hole. Patent Documents 1 and 2 do not describe at all the connection between a steel beam and a concrete material, and there is no description suggesting this.

Therefore, the problem to be solved by the present invention is to provide a dissimilar material joining structure that can be constructed even in a narrow joining area, can increase shear rigidity and shear strength, and has excellent versatility. It is in.

The dissimilar material joining structure according to the present invention is
A dissimilar material joining structure for joining a structural steel material and a solidified material different in material from the structural steel material,
It has a plate-shaped substrate portion, at least one through hole penetrating the substrate portion in the thickness direction, and a projecting edge portion protruding outward from one surface of the substrate portion from an inner peripheral edge of the through hole. The shear resistance member is fixed to the structural steel,
The method is characterized in that the structural steel material and the solidifying material are joined by pouring or filling the solidifying material so as to enclose the structural steel material to which the shear resistance member is fixed.

In the dissimilar material bonding structure, at least a portion of one surface of the substrate portion from which the projecting edge portion projects or the other surface located on the back side of the one surface,
It can be fixed in a state in which it is in contact with or facing the outer surface of the structural steel material, or in a state in which it is in contact with an edge portion of the structural steel material.

In the dissimilar material joining structure, any one of concrete material, mortar material, grout material, and synthetic resin material can be used as the solidifying material.

In the dissimilar material joining structure, the shear resistance member has a plurality of through holes, and the protruding edges of the through holes all have the same protruding direction, or the protruding edge of at least one of the through holes protrudes in the same direction. may be opposite to the protruding direction of the protruding edges of the other through-holes.

In the dissimilar material joining structure, at least one pair of the shear resistance members can be fixed to each other in mirror symmetry with a part of the structural steel material interposed therebetween.

In the dissimilar material joining structure, an opening facing the through hole may be provided in a region of the structural steel material facing the through hole of the shear resistance member.

The dissimilar material joining structure may include a reinforcing bar inserted through the through hole of the shear resistance member and the opening of the structural steel material so as to communicate with each other.

In the dissimilar material joining structure, the substrate portion of the shear resistance member may have a curved shape.

In the dissimilar material joining structure, I-beam steel, H-beam steel, square steel pipe, cross-shape steel, or the like can be used as the structural steel material.

According to the present invention, it is possible to provide a dissimilar material joining structure that can be constructed even in a narrow joining area, increases shear rigidity and shear strength, and has excellent versatility.

FIG. 2 is a perspective view showing a shear resistance member constituting a dissimilar material joining structure according to an embodiment of the present invention. 2 is a view seen from the direction of arrow A in FIG. 1. FIG. 3 is a sectional view taken along line BB in FIG. 2. FIG. FIG. 2 is a diagram showing a state in which the shear resistance member shown in FIG. 1 is fixed to a structural steel material. 5 is a partially omitted sectional view taken along line CC in FIG. 4. FIG. FIG. 7 is a partially omitted sectional view showing another embodiment. 1 is a partially omitted cross-sectional view showing a dissimilar material joining structure according to an embodiment of the present invention. It is a partially omitted enlarged sectional view of a portion indicated by arrow D in FIG. 7. It is a figure which shows the shear resistance member and structural steel material which are other embodiments. It is a figure which shows the shear resistance member and structural steel material which are other embodiments. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. It is a partially omitted sectional view showing a shear resistance member, reinforcing bars, and structural steel materials according to another embodiment. FIG. 7 is a partially omitted front view showing a dissimilar material joining structure according to another embodiment. 17 is a partially omitted sectional view taken along line FF in FIG. 16. FIG. FIG. 7 is a partially omitted cross-sectional view showing a dissimilar material bonding structure according to another embodiment. 19 is a partially omitted front view showing the shear resistance member and structural steel material constituting the dissimilar material joining structure shown in FIG. 18, as seen from the direction of arrow G in FIG. 18. FIG. It is a figure which shows the shear resistance member and structural steel material which are other embodiments. It is a figure which shows the shear resistance member and structural steel material which are other embodiments. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. 29 is a partially omitted sectional view taken along line QQ in FIG. 28. FIG. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. 31 is a partially omitted sectional view taken along line RR in FIG. 30. FIG. FIG. 7 is a partially omitted cross-sectional view showing a shear resistance member and structural steel material according to another embodiment. FIG. 7 is a partially omitted perspective view showing a dissimilar material joining structure according to another embodiment. 34 is a partially omitted plan view seen from the arrow S direction in FIG. 33. FIG. 35 is a partially omitted sectional view taken along the line TT in FIG. 34. FIG. FIG. 2 is a partially omitted vertical cross-sectional view showing a conventional dissimilar material bonding structure. 37 is a partially omitted sectional view taken along line U-U in FIG. 36. FIG. FIG. 2 is a partially omitted front view showing a conventional dissimilar material joining structure. 39 is a partially omitted sectional view taken along line VV in FIG. 38. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, a dissimilar material joining structure which is an embodiment of the present invention will be described based on the drawings.

First, a shear resistance member 1 constituting a dissimilar material joining structure according to an embodiment of the present invention will be described based on FIGS. 1 to 3. As shown in FIGS. 1 to 3, the shear resistance member 1 is made of a steel plate, and includes a flat plate-shaped substrate portion 2, one through hole 3 that penetrates the substrate portion 2 in a thickness direction of 2t, and a through hole. 3 and a protruding edge portion 4 projecting outward from one surface (surface 2a) of the substrate portion 2 from the inner circumferential edge of the substrate portion 3.

Although the through hole 3 and the protruding edge portion 4 of the shear resistance member 1 are formed by pressing (burring) a steel plate, the manufacturing method is not limited thereto. Furthermore, although the outer shape of the substrate portion 2 of the shear resistance member 1 is rectangular and the through hole 3 is circular, the shape is not limited to these shapes.

Next, a mode of fixing the shear resistance member 1 shown in FIG. 1 to the structural steel material 5 will be described based on FIGS. 4 to 6. As shown in FIGS. 4 and 5, the back surface 2b of the substrate portion 2 of the shear resistance member 1 is brought into contact with the outer surface 5a of the flat plate portion of the structural steel material 5, and the outer periphery of the substrate portion 2 and the outer surface of the structural steel material 5 are brought into contact. 5a, the two are fixed by welding W.

In the form shown in FIG. 5, the shear resistance member 1 is fixed by welding W without processing the flat plate portion of the structural steel material 5, but the present invention is not limited to this, so as shown in FIG. In the structural steel material 5, a circular opening 6 passing through the structural steel material 5 in a thickness direction of 5t is provided in a region facing the through hole 3 of the shear resistance member 1. It is also possible to fix both of them while facing the opening 6 of the structural steel material 5.

In the form shown in FIG. 6, the shear resistance member 1 is attached to the structural steel material 5 with the axis 3c of the through hole 3 of the shear resistance member 1 aligned with the axis 6c of the opening 6 of the structural steel material 5. Although it is fixed to , it is not limited to this.

Next, a dissimilar material joining structure 100, which is an embodiment of the present invention, will be described based on FIGS. 7 and 8. FIG. 7 is a partially omitted sectional view showing a dissimilar material joining structure 100 according to an embodiment of the present invention, and FIG. 8 is an enlarged view showing the part indicated by arrow D in FIG. 7 with the concrete material 13 omitted. FIG.

As shown in FIG. 7, the dissimilar material joining structure 100 includes an H-beam 11, which is a type of structural steel, and a plurality of shear resistance members 1, 1 fixed to the outer surface of a web 11a of the H-beam 11. It includes reinforcing bars 12 arranged around an H-beam 11 and a concrete material 13 cast so as to enclose the shear resistance members 1, 1.

Each of the plurality of shear resistance members 1, 1 is the same as the shear resistance member 1 shown in FIGS. 1 to 3, and as shown in FIG. The shear resistance members 1, 1 are fixed to the H-section steel 11 by welding W to the outer surface.

As shown in FIG. 8, in the dissimilar material joining structure 100, a pair of shear resistance members 1, 1 are fixed to each other in mirror symmetry with a web 11a of an H-beam 11 interposed therebetween. Further, in a region of the web 11a where the through holes 3, 3 of the shear resistance members 1, 1 face each other, a circular opening 6 coaxially communicating with the through holes 3, 3 is provided. The concrete material 13 (see FIG. 7) cast so as to enclose the H-shaped steel 11, reinforcing bars 12, and shear resistance members 1, 1 is also filled in the through holes 3, 3 and the opening 6 without any gaps. ing.

In the dissimilar material joining structure 100 shown in FIG. Since the projecting edges 4, 4 each exhibit a strong bearing pressure resistance against the shear force applied in the plane direction of the web 11a, the shear rigidity and shear resistance are improved compared to the conventional joint structure 300 shown in FIGS. 38 and 39. increases significantly.

Furthermore, compared to the total length 301t of the headed stud 301 used in the conventional joining structure 300 shown in FIGS. 38 and 39, the thickness 1t (see FIG. 2) of the shear resistance member 1 as a whole is small, so that different types of The joining structure 100 can be constructed even in a narrow joining area. Furthermore, as will be described later, the shear resistance member 1 can be fixed to structural steel materials of various shapes in various states, so it can accurately respond to a wide variety of construction conditions and can be used for general purposes. It is also excellent in sex.

Next, dissimilar material joining structures 101 to 120, which are other embodiments of the present invention, will be described based on FIGS. 9 to 32. In the dissimilar material joining structures 101 to 120 shown in FIGS. 9 to 32, the parts common to the constituent parts of the dissimilar material joining structure 100 shown in FIGS. 7 and 8 are designated by the same reference numerals as in FIGS. 7 and 8. Reference numerals are given and explanations are omitted. Further, in the dissimilar material joining structures 101 to 120 shown in FIGS. 9 to 32, concrete materials and reinforcing bars cast around shear resistance members, structural steel materials, etc. are omitted.

The dissimilar material joining structure 101 shown in FIG. It includes reinforced reinforcement (not shown) and a concrete material (not shown) cast so as to enclose the shear resistance member 20. The shear resistance member 20 has the same configuration as the shear resistance member 1 shown in FIG. 1, but the length of one side of the substrate portion 2, the inner diameter of the through hole 3, etc. It is.

The dissimilar material joining structure 102 shown in FIG. (not shown) and a concrete material (not shown) cast so as to enclose the shear resistance member 21. The shear resistance member 21 has the same configuration as the shear resistance member 1 shown in FIG. is set smaller than the case.

The dissimilar material joining structure 103 shown in FIG. 11 includes an H-beam 11 and a plurality of shear resistance members 1 each fixed to the outer surface (the surface not connected to the web 11a) of the flanges 11b, 11b of the H-beam 11. and reinforcing bars (not shown) arranged around the H-shaped steel 11 and concrete material (not shown) cast so as to enclose the shear resistance member 1. The shear resistance member 1 has the same configuration as the shear resistance member 1 shown in FIG.

The dissimilar material joining structure 104 shown in FIG. 12 includes an H-shaped steel 11 and a plurality of shear resistance members 1 each fixed to the outer surface (the surface connected to the web 11a) of the flanges 11b, 11b of the H-shaped steel 11. and reinforcing bars (not shown) arranged around the H-shaped steel 11 and concrete material (not shown) cast so as to enclose the shear resistance member 1. The shear resistance member 1 has the same configuration as the shear resistance member 1 shown in FIG.

The dissimilar material joining structure 105 shown in FIG. 13 consists of an H-beam 11 and a plurality of pairs of shear-resistance members 1 that are fixed in mirror symmetry across the web 11a and flanges 11b, 11b of the H-beam 11, respectively. , reinforcing bars (not shown) arranged around the H-shaped steel 11 and concrete material (not shown) cast so as to enclose the shear resistance member 1. The shear resistance member 1 has the same configuration as the shear resistance member 1 shown in FIG.

In the dissimilar material joining structure 106 shown in FIG. 14, a plurality of openings 6 are opened in the flanges 11b, 11b of the H-shaped steel 11, and a plurality of openings 6 are formed in the outer surface (the surface connected to the web 11a) of the flanges 11b, 11b. The substrate portion 2 of the shear resistance member 1 is fixedly attached. The shear resistance member 1 has the same configuration as the shear resistance member 1 shown in FIG.

The through holes 3 (see FIG. 3) of the plurality of shear resistance members 1 communicate with the openings 6 of the flanges 11b and 11b, respectively, as shown in FIG. Reinforcing bars 7 are arranged so as to pass through the through holes 3 of the shear resistance member 1 and also through the through holes 3 of the shear resistance member 1 on the other flange 11b side and the openings 6 of the flange 11b. Although not shown in the drawings, a concrete material is placed so as to enclose reinforcing bars arranged around the H-shaped steel 11 and the shear resistance member 1.

In the dissimilar material joining structure 106 shown in FIG. 14, the H-shaped steel 11, the shear resistance member 1, the reinforcing bars 7, and the concrete material are firmly integrated, so that cracking of the concrete material can be effectively prevented.

A dissimilar material bonding structure 107 shown in FIG. 15 is a modification of the dissimilar material bonding structure 106 shown in FIG. 14 in the portion indicated by arrow E. In the dissimilar material joining structure 107, each of the plurality of shear resistance members 1 fixed to one surface (the surface connected to the web 11a) of the flange 11b in the dissimilar material joining structure 106 shown in FIG. The shear resistance member 1 is fixed so as to have mirror symmetry with 11b in between. The reinforcing bar 7 extends through the through hole 3 of the shear resistance member 1 fixed to one surface of the flange 11b, the opening 6 of the flange 11b, and the through hole 3 of the shear resistance member 1 fixed to the other surface of the flange 11b. Reinforcement is placed in a penetrating state.

Also in the dissimilar material joining structure 107 shown in FIG. 15, the H-shaped steel 11, the shear resistance member 1, the reinforcing bars 7, and the concrete material are firmly integrated, so cracking of the concrete material can be effectively prevented. In particular, peeling of the concrete material in the longitudinal direction of the reinforcing bars 7 can be prevented.

The dissimilar material joining structure 108 shown in FIGS. 16 and 17 includes an H-beam 11 and a plurality of shear resistance members fixed to side edges (margins) 11c, 11c of flanges 11b, 11b of the H-beam 11. 22, and a concrete material 13 cast in an area defined by the web 11a of the H-shaped steel 11 and the flanges 11b, 11b. The shear resistance member 22 has the same configuration as the shear resistance member 1 shown in FIG. 1 except that the outer shape of the substrate portion 2 is rectangular.

The plurality of shear resistance members 22, 22 have their respective projecting edges 4 facing the web 11a of the H-section steel 11, and the base plate portions 2 facing inside the side edges (margins) 11c, 11c of the flanges 11b, 11b. It is fixed by welding W in the fitted state. The plurality of shear resistance members 22, 22 are arranged in mirror symmetry with the web 11a of the H-beam 11 interposed therebetween.

In the dissimilar material joining structure 108 shown in FIGS. 16 and 17, the concrete material 13 is strongly restrained by the web 11a of the H-shaped steel 11, the flanges 11b, 11b, and the shear resistance member 22, so that shear rigidity and shear resistance are improved. can be achieved.

In the dissimilar material joining structure 109 shown in FIGS. 18 and 19, shear resistance members 23, 23 are fixed to the side edges (margins) 11c, 11c of the flanges 11b, 11b of the H-beam 11, and A concrete material 13 is placed so as to enclose the reinforcing bars 12 arranged around the reinforcing bars 11 and the shear resistance members 23, 23. The shear resistance member 23 is the same as the shear resistance member 1 shown in FIG. It has the same configuration as .

The plurality of shear resistance members 23, 23 have the back surface 2b of each base plate 2 (the surface without the protrusion 4) facing the web 11a of the H-shaped steel 11, and the back surface 2b of the base plate 2 facing the flange 11b, It is fixed by welding W in a state where it is brought into contact with the side edges (margins) 11c, 11c of 11b. The plurality of shear resistance members 23, 23 are arranged in mirror symmetry with the web 11a of the H-beam 11 interposed therebetween.

In the dissimilar material joining structure 109 shown in FIGS. 18 and 19, the concrete material 13 is strongly restrained by the web 11a of the H-shaped steel 11, the flanges 11b, 11b, and the shear resistance member 22, as described above, so that the shear rigidity and It is possible to improve shear strength.

In the dissimilar material joining structure 110 shown in FIG. Concrete material (not shown) is placed so as to enclose reinforced reinforcing bars (not shown) and shear resistance members 24 . In the shear resistance member 24, the substrate portion 2 has a rectangular outer shape, and a plurality of (four) through holes 3 and a protruding edge portion 4 are formed. The projecting edges 4 of two of the four through holes 3 protrude toward the web 11a of the H-section steel 11, and the projecting edges 4 of the other two through holes 3 project in a direction away from the web 11a. There is.

In the dissimilar material joining structure 111 shown in FIG. Concrete material (not shown) is placed so as to enclose reinforced reinforcing bars (not shown) and shear resistance members 25 . In the shear resistance member 25, the substrate portion 2 has a rectangular outer shape, and a plurality of (two) through holes 3 and a protruding edge portion 4 are formed. One of the projecting edges 4 of the two through holes 3 projects toward the web 11a of the H-beam 11, and the projecting edge 4 of the other through hole 3 projects in a direction away from the web 11a.

In the dissimilar material joining structure 112 shown in FIG. 22, the shear resistance member 1 is fixed to each of the four flat parts 8a on the outer periphery of the square steel pipe 8, and the shear resistance member 1 and around the square steel pipe 8 are fixed inside the square steel pipe 8. Concrete material (not shown) is placed so as to enclose the reinforced reinforcing bars (not shown). In the shear resistance member 1, the back surface 2b of each substrate part 2 is brought into contact with the flat part 8a, and the protruding edge part 4 protrudes toward the outside (in the direction away from the flat part 8a).

In the dissimilar material joining structure 113 shown in FIG. 23, the shear resistance member 1 is fixed to each of the four flat surfaces 8b on the inner circumference of the square steel pipe 8, and the inside of the square steel pipe 8, around the shear resistance member 1 and the square steel pipe 8. Concrete material (not shown) is placed so as to enclose reinforcing bars (not shown) arranged in the concrete. In the shear resistance member 1, the back surface 2b of each substrate part 2 is brought into contact with the flat part 8b, and the protruding edge part 4 protrudes inward (in the direction away from the flat part 8b).

The dissimilar material bonding structure 114 shown in FIG. 24 has a structure that is a combination of the dissimilar material bonding structure 112 shown in FIG. 22 and the dissimilar material bonding structure 113 shown in FIG. 23. In the dissimilar material joining structure 114 shown in FIG. Concrete material (not shown) is placed inside, so as to enclose reinforcing bars (not shown) arranged around the shear resistance member 1 and the square steel pipe 8.

The shear resistance member 1 fixed to the four flat parts 8a on the outer periphery of the square steel pipe 8 has the back surface 2b of each base plate part 2 in contact with the flat part 8a, and the protruding edge 4 is on the outside (separated from the flat part 8a). protruding in the direction).

The shear resistance member 1 fixed to the four flat parts 8b on the inner periphery of the square steel pipe 8 has the back surface 2b of each base plate part 2 in contact with the flat part 8b, and the protruding edge 4 is placed inside (from the flat part 8b). protruding toward the direction of departure).

The dissimilar material joining structure 115 shown in FIG. 9. A concrete material (not shown) is cast so as to enclose reinforcing bars (not shown) arranged around the plurality of shear resistance members 1 and the cross-shaped steel 9. The shear resistance member 1 shown in FIG. 25 has the same configuration as the shear resistance member 1 shown in FIG.

In the dissimilar material joining structure 115 shown in FIG. 25, the plurality of shear resistance members 1 are fixed to the same position of the web 9a in a state sandwiching them from both sides, but the invention is not limited to this. 1 can also be arranged and fixed in a staggered manner on both sides of the web 9a.

The dissimilar material joining structure 116 shown in FIG. 26 includes a cross-shaped steel 9 and a plurality of shear resistors each fixed to the outer surface (the surface not connected to the web 9a) of the four flanges 9b constituting the cross-shaped steel 9. A member 1, a concrete material (not shown) cast so as to include a cross-shaped steel 9, a plurality of shear resistance members 1, and reinforcing bars (not shown) arranged around the cross-shaped steel 9. , is equipped with. The shear resistance member 1 shown in FIG. 26 has the same configuration as the shear resistance member 1 shown in FIG.

The dissimilar material joining structure 117 shown in FIG. 27 is constructed so as to straddle between the side edges (margins) 9c, 9c of the adjacent flanges 9b in the cross-shaped steel 9 and the four flanges 9b constituting the cross-shaped steel 9. A plurality of shear resistance members 1 fixed to the side edges (margins) 9c, 9c in a state of A concrete material (not shown) is cast so as to enclose a concrete material (not shown). The shear resistance member 1 shown in FIG. 26 has the same configuration as the shear resistance member 1 shown in FIG.

In the dissimilar material joining structure 117 shown in FIG. 27, the plurality of shear resistance members 1 are arranged at the side edges (sides) of the flanges 9b with their respective projecting edges 4 facing outward (in the direction away from the center of the cross-shaped steel 9). Although it is fixed to the edges) 9c, 9c, it is not limited thereto.

The dissimilar material joining structure 118 shown in FIG. 28 and FIG. Concrete material (not shown) is placed in the concrete. The shear resistance member 26 includes a plate-shaped substrate portion 27 having a curved shape, a through hole 28 penetrating the substrate portion 27 in the direction of its thickness 27t, and a portion extending outward from the inner peripheral edge of the through hole 28 from the surface 27a of the substrate portion 27. A protruding edge portion 29 that protrudes in the direction away from the substrate portion 27 is provided.

The base plate 27 of the shear resistance member 26 has a curved shape with a convex surface 27a (the surface where the protruding edge 29 is located), and a concave back surface 27b ( They are fixed by welding W with their sides facing each other (the surfaces without the projecting edge 29). A concrete material (not shown) is also cast between the structural steel material 5 and the shear resistance member 26 in a state that the concrete material passes through the through hole 28 . The poured concrete material (not shown) flows between the outer surface 5a of the structural steel material 5 and the back surface 27b of the base plate 27 of the shear resistance member 26, so that The entire shear resistance member 26 can resist the peeling force (separation force, floating force) that occurs in the direction in which the concrete material lifts up from the outer surface 5a, thereby achieving integration.

In addition, in the dissimilar material joining structure 118 shown in FIGS. 28 and 29, the through hole 28 of the shear resistance member 26 is effective in improving the filling property (integrity property) of the concrete material, and is The provided concrete material is effective in improving the rigidity of the projecting edge portion 29. Furthermore, the protruding edge portion 29 exerts resistance against horizontal shearing force (shearing force in the plane direction of the structural steel material 5) generated at the interface between the structural steel material 5 and the concrete material, and the concave shape of the base plate portion 27 The curved back surface 27b exhibits resistance to peeling force (normal force) generated at the interface between the structural steel material 5 and the concrete material.

In this way, in the dissimilar material joining structure 118 shown in FIGS. 28 and 29, the structural steel material 5 and the concrete material are firmly integrated due to the presence of the shear resistance member 26 having the curved base portion 27. Therefore, shear rigidity and shear resistance can be improved.

The dissimilar material joining structure 119 shown in FIG. 30 and FIG. Concrete material (not shown) is placed in the concrete. The shear resistance member 30 includes a plate-shaped substrate portion 31 having a curved shape, a through hole 32 penetrating the substrate portion 31 in the direction of its thickness 31t, and a portion extending from the inner peripheral edge of the through hole 32 to the outside from the back surface 31b of the substrate portion 31. A protruding edge portion 33 that protrudes in the direction away from the substrate portion 31 is provided.

The substrate portion 31 of the shear resistance member 30 has a curved shape with its front surface 31a (the surface without the protruding edge portion 33) being convex, and has a concave back surface 31b (with respect to the outer surface 5a of the structural steel material 5). They are fixed by welding W with their sides facing each other (surfaces with projecting edges 33) facing each other. A concrete material (not shown) is also cast between the structural steel material 5 and the shear resistance member 30 in a state where it passes through the through hole 32 .

In the dissimilar material joining structure 119 shown in FIGS. 30 and 31, similar to the dissimilar material joining structure 118 shown in FIGS. 28 and 29, the structural steel material 5 Since the concrete material and the concrete material are strongly integrated, shear rigidity and shear resistance can be improved.

In the dissimilar material bonding structure 120 shown in FIG. 32, the back surface 2b of the substrate portion 2 of the shear resistance member 1 is fixed to the outer surface 5a of the flat plate portion of the structural steel material 5 via the adhesive 35, thereby bonding both. Concrete material (not shown) is cast so as to integrate and enclose the structural steel material 5 and the shear resistance member 26.

In the dissimilar material joining structure 121 shown in FIGS. 33 to 35, a plurality of shear resistance members 1 are fixed by welding at predetermined intervals to the outer surface 5a of the flat plate portion of the structural steel material 5, and the shear resistance members 1 are arranged A timber 40 having a plurality of through parts 41 opened at the same phase as the intervals is fixed to the outer surface 5a of the structural steel material 5 with an adhesive, and concrete material 13 is poured into the through parts 41. The shape of the substrate portion 2 of the shear resistance member 1 in plan view and the shape of the penetration portion 41 in plan view are similar, and the size of the substrate portion 2 is such that it fits inside the penetration portion 41 . The concrete material 13 is filled into the penetrating portion 41 without any gaps, and includes the outer surface 5a of the structural steel material 5 and the shear resistance member 1.

In the dissimilar material joining structure 121 shown in FIGS. 33 to 35, the presence of the shear resistance member 1 and the concrete material 13 allows the structural steel material 5 and the wood 40 to be firmly integrated, so that the shear rigidity and shear resistance are increased. It is possible to improve the Note that the wood 40 is not limited to this, and synthetic resin materials (including FRP) and concrete materials can be used. Further, instead of the concrete material 13, a mortar material or a grout material may be placed in the penetrating portion 41, or an adhesive may be filled in the penetrating portion 41.

Note that the dissimilar material bonding structures 100 to 121 described based on FIGS. 1 to 35 are examples of the dissimilar material bonding structures according to the present invention, and the dissimilar material bonding structures according to the invention are the dissimilar material bonding structures described above. It is not limited to 100-121.

The dissimilar material joining structure according to the present invention can be widely used in industrial fields such as the civil engineering construction industry and the building industry.

1, 20, 21, 22, 23, 24, 25, 26, 30 Shear resistance member 2, 27, 31 Substrate part 2a, 27a Front surface 2b, 27b Back surface 2t, 5t, 27t, 31t Thickness 3, 28, 32 Penetration Hole 3c, 6c Axis 4, 29, 33 Projection edge 5 Structural steel 5a External surface 6 Opening 7, 12 Rebar 8 Square steel pipe 8a, 8b Plane portion 9 Cross-shaped steel 9b, 11b Flange 9c, 11c Side edge 11 H-shaped steel 11a Web 13 Concrete material 35 Adhesive 40 Wood 41 Penetrating part 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121 Dissimilar material joining structure W Welding

Claims (17)

A dissimilar material joining structure for joining a structural steel material and a solidified material different in material from the structural steel material,
It has a plate-shaped substrate portion, at least one through hole penetrating the substrate portion in the thickness direction, and a projecting edge portion protruding outward from one surface of the substrate portion from an inner peripheral edge of the through hole. fixing a shear resistant member to the structural steel;
The solidifying material is filled inside the through hole of the fixed shear resistance member, and the solidifying material is cast or filled so as to enclose the structural steel material to which the shear resistance member is fixed, A dissimilar material joining structure for joining the structural steel material and the solidifying material,
The shear resistance member is attached to the structural steel member with the other surface located on the back side of one surface of the base plate from which the protruding edge portion of the shear resistance member protrudes in contact with the same surface of the structural steel material. stuck to steel
A dissimilar material joining structure characterized by: the structural steel, the plurality of shear resistance members fixed to the structural steel, reinforcing bars disposed around the structural steel to which the shear resistance members are fixed, and the shear resistance members fixed; 2. The dissimilar material joining structure according to claim 1, further comprising: said solidifying material so as to enclose said structural steel material and said reinforcing bar. The dissimilar material joining structure according to claim 1 or 2, wherein the solidifying material is any one of concrete material, mortar material, grout material, and synthetic resin material. The dissimilar material joining structure according to any one of claims 1 to 3, wherein the shear resistance member has a plurality of through holes, and the projecting directions of the projecting edges of the through holes are all the same . The dissimilar material joining structure according to any one of claims 1 to 4, wherein at least one pair of said shear resistance members are fixed to each other in mirror symmetry with a part of said structural steel material sandwiched therebetween. The dissimilar material joining structure according to any one of claims 1 to 5, wherein the shear resistance members are arranged approximately symmetrically in a cross section of the structural steel material to which the shear resistance members are fixed. The dissimilar material joining structure according to any one of claims 1 to 6, wherein the structural steel material does not have an opening in a region facing the through hole of the shear resistance member. The dissimilar material joining structure according to any one of claims 1 to 6 , wherein an opening facing the through hole is provided in a region of the structural steel material facing the through hole of the shear resistance member. 9. The dissimilar material joining structure according to claim 8 , further comprising a reinforcing bar inserted through the through hole of the shear resistance member and the opening of the structural steel material in a state of communication. The dissimilar material joining structure according to any one of claims 1 to 9, wherein the entire outer periphery of the other surface of the substrate portion of the shear resistance member is fixed to the structural steel material. The dissimilar material joining structure according to any one of claims 1 to 10 , wherein the structural steel material is an I-beam steel, an H-beam steel, a square steel pipe, or a cross-shape steel. The structural steel material is an H-beam steel, the plurality of shear resistance members are fixed to the webs and/or flanges of the H-beam steel, and the structure is arranged around the structural steel material to which the shear resistance members are fixed. The dissimilar material joining structure according to any one of claims 1 to 11, further comprising reinforcing bars having been fixed thereto, and the solidifying material so as to enclose the structural steel material to which the shear resistance member is fixed. The solidifying material is arranged to enclose the structural steel material that is a square steel pipe, the plurality of shear resistance members fixed to each of the four flat parts of the square steel pipe, and the structural steel material to which the shear resistance members are fixed. The dissimilar material joining structure according to any one of claims 1 to 11, comprising: The structural steel material is a cruciform steel, the plurality of shear resistance members fixed to four webs and/or four flanges constituting the cruciform steel, and the structural steel material to which the shear resistance members are fixed. The dissimilar material joining structure according to any one of claims 1 to 11, further comprising the solidifying material so as to enclose the solidifying material. A dissimilar material joining structure for joining a structural steel material and a solidified material having a different material from the structural steel material,
It has a plate-shaped substrate portion, at least one through hole penetrating the substrate portion in the thickness direction, and a projecting edge portion protruding outward from one surface of the substrate portion from an inner peripheral edge of the through hole. affixing a shear resistant member to the structural steel;
The solidifying material is filled inside the through hole of the fixed shear resistance member, and the solidifying material is cast or filled so as to enclose the structural steel material to which the shear resistance member is fixed, A dissimilar material joining structure for joining the structural steel material and the solidifying material,
(i) The base plate portion of the shear resistance member has a curved shape with one side from which the protruding edge protrudes convex, and the one side has a concave shape with respect to the surface of the structural steel material. The shear resistance member is fixed to the surface of the structural steel material with the other surface located on the back side of the surface facing the surface, or
(ii) The substrate portion of the shear resistance member has a curved shape with the other surface being convex, and the one concave surface is opposed to the surface of the structural steel material. the shear resistance member is fixed to the surface of the structural steel material in a state where the shear resistance member is fixed to the surface of the structural steel material
A dissimilar material joining structure characterized by: A dissimilar material joining structure for joining a structural steel material and a solidified material having a different material from the structural steel material,
It has a plate-shaped substrate portion, at least one through hole penetrating the substrate portion in the thickness direction, and a projecting edge portion protruding outward from one surface of the substrate portion from an inner peripheral edge of the through hole. affixing a shear resistant member to the structural steel;
The solidifying material is filled inside the through hole of the fixed shear resistance member, and the solidifying material is cast or filled so as to enclose the structural steel material to which the shear resistance member is fixed, A dissimilar material joining structure for joining the structural steel material and the solidifying material,
The structural steel material is a cruciform steel, and the plurality of shear resistance members are fixed to the side edges of the four flanges constituting the cruciform steel so as to straddle the side edges of adjacent flanges. and the solidifying material to enclose the structural steel material to which the shear resistance member is fixed.
A dissimilar material joining structure characterized by: A dissimilar material joining structure for joining a structural steel material and a solidified material having a different material from the structural steel material,
It has a plate-shaped substrate portion, at least one through hole penetrating the substrate portion in the thickness direction, and a projecting edge portion protruding outward from one surface of the substrate portion from an inner peripheral edge of the through hole. affixing a shear resistant member to the structural steel;
The solidifying material is filled inside the through hole of the fixed shear resistance member, and the solidifying material is cast or filled so as to enclose the structural steel material to which the shear resistance member is fixed, A dissimilar material joining structure for joining the structural steel material and the solidifying material,
The structural steel material, which is an H-section steel, the plurality of shear resistance members fixed to each other so as to straddle the side edges of the flanges constituting the H section steel, and and the solidifying material so as to enclose the structural steel material.
A dissimilar material joining structure characterized by:

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