WO2014006780A1

WO2014006780A1 - Anchoring device for transmitting shear force having tensile resistance functionality

Info

Publication number: WO2014006780A1
Application number: PCT/JP2012/083399
Authority: WO
Inventors: 等塩原; 芳生井上; 佐藤　貴志; 八木沢　康衛; 健治横田; 岡　功治
Original assignee: サンコーテクノ株式会社; 株式会社ＫＳＥｎｅｔｗｏｒｋ; 株式会社大本組
Priority date: 2012-07-03
Filing date: 2012-12-25
Publication date: 2014-01-09
Also published as: SG11201408825YA

Abstract

[Problem] To allow an anchoring device, disposed spanning between a main structure and an auxiliary structure capable of behaving independently when a horizontal force is applied, that transmits the shear force in the direction intersecting the direction in which the two structures are mutually facing in between the main structure and the auxiliary structure, to be given resistive functionality for tensile forces and to be applied to the conventional joining section that transmits shear force and tensile force while transmitting the bending moment. [Solution] An anchoring device (1) is configured from: a main anchoring member (2) fixed in a location in a main structure (7), placed a distance from the interface with an auxiliary structure (8); a shear resisting member (3) disposed in the boundary between the main structure (7) and auxiliary structure (8) spanning between the main structure (7) and auxiliary structure (8); an auxiliary anchoring member (4), fixed on a line passing through the main anchoring member (2) and the shear resisting member (3), in a location in the auxiliary structure (8) placed a distance from the interface with the main structure (7); and a tensile member (5) coupled to the main anchoring member (2) and the auxiliary anchoring member (4), passing through and hanging across the shear resisting member (3) between the main anchoring member (2) and the auxiliary anchoring member (4).

Description

Fixing device for shear force transmission with tensile resistance function

The present invention is in contact with each other, for example, an existing concrete structure and a new concrete structure constructed in contact with the structure, or a structure that is the main body of the structure and a structure that is additionally constructed in contact with the structure. It is installed between the main structure and the additional structure, which are adjacent to each other, such as constructed in a state that is constructed, and can behave independently when the horizontal force is applied, between the main structure and the additional structure, The present invention relates to a fixing device for shearing force transmission with a tensile resistance function in which a fixing device for transmitting a shearing force in a direction orthogonal to a direction in which both structures face each other is provided with a resistance function against a tensile force.

For example, when constructing a new concrete structure (new structure) to supplement the earthquake resistance of an existing concrete structure (old structure), the new structure (additional structure) is used for the purpose of seismic reinforcement. Then, it is joined to the existing structure (main structure) so that the shearing force at the time of earthquake is transmitted between the existing structure (main structure) (see Patent Documents 1 to 3).

On the other hand, for example, when the additional structure (new structure) and the main structure (old structure) behave independently of each other when a horizontal force is applied due to differences in bending rigidity (natural frequency), The additional structure is forcibly deformed in such a way that it follows (drags) the deformation of the main structure, but when both structures are deformed, a relative rotational deformation occurs between the opposing faces of each housing. Can do.

The deformation of the additional structure by following the deformation of the main structure occurs when the main structure bends and deforms in the direction in which both structures face each other, so the relative rotation between the main structure and the additional structure Deformation occurs around a horizontal axis parallel to the surface (in-plane direction) where both structures face each other.

At this time, a bending moment around the horizontal axis parallel to the surface (boundary surface) where the two structures face each other acts at the joint between the main structure and the additional structure. A tensile force acts and a compressive force acts on the other cross section. The tensile force and compressive force are alternately changed every time the additional structure is deformed in the positive and negative directions with respect to the main structure. Therefore, there is tensile and compressive force on one side and the other side of the neutral shaft. Acts alternately and repeatedly.

In addition, for example, when the main structure and the additional structure having different natural frequencies are joined at a portion corresponding to the antinode of each vibration, the joined portion is located at a place where the amplitude of both structures is the largest. Therefore, in the joint portion, the two structural bodies try to be relatively displaced alternately in a direction approaching and away from each other, and thus a tensile force and a compressive force act alternately on the joint portion.

The situation where the tensile force and the compressive force act alternately can occur in all joints where the main structure and the additional structure are joined in contact with each other. For example, when each superstructure of the main structure and the additional structure undergoes bending deformation, each foundation bears a bending moment so as to suppress the bending deformation of the superstructure. There is a possibility that a tensile force and a compressive force act on a joint portion between the foundation of the structure and the foundation of the additional structure.

In this way, between the joints of structures that are in contact with each other and can transmit bending moments, for example, the joint between the foundation of the superstructure and the head of the pile that supports the foundation. It is possible to prevent the tensile force associated with the bending moment from acting on the foundation and the pile head in the joint portion adopting a structure that does not transmit the bending moment. However, since the foundation needs to transmit the horizontal force to the pile head without lifting from the pile head when the horizontal force is applied, it is possible to transmit at least the axial tensile force and horizontal shear force of the pile. It must be joined to the pile head in a state (see Patent Document 4).

Japanese Patent No. 4038472 (paragraphs 0067 and 0080, FIGS. 11 and 12) Japanese Patent No. 4230533 (paragraphs 0081 to 0083, FIGS. 6 and 7) Japanese Patent No. 4628491 (Claims 1 to 3, paragraphs 0017 to 0056, FIG. 1, FIG. 3, FIG. 4, FIG. 8 to FIG. 11) JP 2002-070036 (Claim 1, paragraphs 0004 to 0006, 0045 to 0057, FIGS. 1 to 4)

Patent Document 4 has a structure in which a certain degree of relative rotation occurs in order to avoid an increase in the cross-section of the pile head due to the transmission of bending moment at the joint between the foundation and the pile head. In order to transmit the force and the pulling force acting on the foundation to the pile, the stress transmission device arranged at the joint has both resistance to shear force and tensile force.

However, when the foundation and the pile head are joined in a state where no bending moment is transmitted as in Patent Document 4, the foundation and the pile head need to be joined in a state in which relative rotational displacement is allowed. Since a clearance is secured in the horizontal direction between the fixed member and the member fixed to the pile head (Figs. 1 to 4, paragraph 0057), shear force (horizontal force) is transmitted within the clearance range. It will not be done.

In addition, as described in Patent Document 4, a joint that allows relative rotational displacement between structures by forming a clearance is a structure that does not transmit a bending moment between structures that can behave independently. It is constructed in a state where it is in contact with each other as between the structure and the additional structure, and it cannot be applied to the structure between which the bending moment is transmitted. Therefore, the structure of Patent Document 4 remains in a structure peculiar to the joint between the foundation and the pile head, and does not have a content that can be applied (deployed) to a general joint.

From the above background, the present invention can be applied to general joints that transmit shearing force and tensile force while transmitting bending moment, such as between adjacent structures that can behave independently. The fixing device for shear force transmission with the tensile resistance function is proposed.

The fixing device for shear force transmission with a tensile resistance function according to the first aspect of the present invention is between the main structure and the additional structure which are adjacent to each other in contact with each other and can behave independently when a horizontal force is applied. A fixing device that is installed across the main structure and the additional structure and transmits a shearing force in a direction perpendicular to a direction in which both the structures are opposed to each other;
A main fixing material fixed at a position away from a boundary surface with the additional structure in the main structure, and the main structure and the additional at the boundary between the main structure and the additional structure A boundary between the main structure in the additional structure and a shear resistance material disposed between the structures and bearing a shearing force when the main structure and the additional structure are relatively displaced An additional fixing material fixed on a line passing through the main fixing material and the shear resistance material at a distance from the surface, and the shear resistance material is penetrated between the main fixing material and the additional fixing material. And a tension member that is connected to the main fixing material and the additional fixing material and bears a tensile force when the distance between the main fixing material and the additional fixing material is to be increased. Is a configuration requirement.

“The main structure and the additional structure behave independently of each other when a horizontal force is applied” mainly means that the main structure and the additional structure bend and deform independently in the opposing direction. This includes a case in which a shear force acts between the body and the additional structure, which involves relative deformation (relative displacement) in a direction orthogonal to the direction in which the main structure and the additional structure face each other. The shearing force acting between the main structure and the additional structure refers to the force generated when the main structure and the additional structure are relatively deformed (relative displacement) in the direction perpendicular to the opposing direction. It is not necessarily power.

The tensile force acting between the main structure and the additional structure is simply the tensile force associated with the bending moment acting on the joint when the main structure and the additional structure bend independently. It includes a tensile force when the main structure and the additional structure are deformed away from each other. The latter tensile force occurs when the main structure and the additional structure having different natural frequencies are joined at a portion corresponding to the antinode of each vibration.

The main structure and additional structure are mainly part of reinforced concrete structure, but some may be unreinforced concrete or mortar. For example, the main structure refers to all existing concrete structures, and the additional structure refers to all concrete structures that are additionally constructed in contact with the surface of the existing concrete structure. In some cases, the main structure and the additional structure are both new structures. The main structure and additional structures include both building structures and civil engineering structures, and include bridge girders, bridge piers, footings, etc. in addition to building columns, beams, slabs, foundations, and the like.

“Adjacent in contact with each other” means that the main structure and the additional structure are in contact with each other as a result of being constructed or installed in a state where the main structure and the additional structure are in contact with each other. If it is a relationship, it is the meaning which does not ask | require each structure and joining site | part of a main structure and an additional structure. When the additional structure is the same structure as the main structure, the joint site depends on, for example, the old and new slabs, beams (girder), columns, foundations, etc., or the construction position of the additional structure These are arbitrary combinations and the like, and include a joint portion between a foundation and a pile.

When the additional structure has the role of seismic (damping) reinforcement for the main structure, it is constructed with the slab or beam of the additional structure joined to the surface of any part of the main structure . Regardless of the time of construction of the additional structure with respect to the main structure, the additional structure is constructed immediately after the construction of the main structure, such as the joining of the main structure and the additional structure. In other cases, the construction of the main structure is completed, and when the necessity for reinforcement of the main structure occurs during the period of use.

The main fixing material positioned in the main structure is fixed (embedded) in the main structure, and the additional fixing material positioned in the additional structure is fixed (embedded) in the additional structure. The “position in the main structure at a distance from the interface with the additional structure” where the main fixing material is fixed refers to the interface between the main structure and the additional structure in the direction in which both structures face each other. The position where the additional fixing material is fixed is the "position in the additional structure at a distance from the boundary surface with the main structure" where the additional fixing material is fixed. The boundary surface between the main structure and the additional structure It is the position which entered from the side to the additional structure side. Since “the additional fixing material is fixed on a line passing through the main fixing material and the shear resistance material”, the shear resistance material is located at an intermediate portion on a straight line connecting the main fixing material and the additional fixing material.

The shear resistance material is arranged between the main structure and the additional structure at the boundary between the main structure and the additional structure, so that when the main structure and the additional structure are relatively displaced, Bear the shear force in the direction of displacement. The direction of relative displacement includes all directions orthogonal to the direction in which both structures face each other, and is not limited to the horizontal direction. “Arranged across” means that the main structure and the additional structure are fixed or embedded on both sides of the main structure and the additional structure. When the additional structure is about to be displaced relative to the main structure in parallel with the boundary surface, the fixing portion (which may be a main body described later) to the main structure receives a reaction force from the main structure. Thus, it exerts shear resistance and prevents the deformation of the additional structure relative to the main structure.

Specifically, as shown in FIG. 1, the shear resistance material 3 is in a state where the main structure 7 and the additional structure 8 face each other in the axial direction (the axial direction of the “insertion hole 3a” described later). The fixing part 31 is fixed to one of the main structure 7 and the additional structure 8, and the main part 32 is fixed to the other part of the fixing part 31. It fits into a groove 7b formed in the structure (concrete) from the surface side.

As shown in FIG. 1, the fixing unit 31 is continuously or intermittently formed (projected) in the circumferential direction at a position near the periphery of the main body 32, and is formed in an annular shape as a whole. When any portion of the fixing unit 31 bears a shearing force, the fixing unit 31 is continuously formed to distribute the load throughout the fixing unit 31. “Intermittently formed” means that the depth of the fixing unit 31 changes in the circumferential direction as in the case where the fixing unit 31 is formed in a wave shape.

By fixing the fixing portion 31 and the main body portion 32 to the structures on the respective sides, contact between one structure (main structure 7) and the other structure (additional structure 8) at the time of an earthquake, etc. When the relative displacement (displacement deformation) in the direction parallel to the contact surface is about to occur while the surface (boundary surface) is in a parallel state, the shear resistance material 3 has both structures (the additional structure 7 and the main structure). Transmits shear forces between the bodies 8).

In the case of FIG. 1 where the boundary surface between the main structure 7 and the additional structure 8 is a vertical surface, when the shear resistance material 3 is viewed in a direction orthogonal to the axial direction (the direction of FIG. 1 and the like) The shear resistance material 3 has a shape (three-dimensional shape) having the same length (projection area) in two directions (horizontal direction and vertical direction), and has a spherical shape or the like like the main fixing material 2 shown in FIG. If the shape has no directivity in the direction orthogonal to the direction, the shearing force in the vertical direction can also be transmitted. Here, one structure (main structure 7) and the other structure (additional structure 8) behave independently, and a bending moment at the joint (boundary surface of the main structure 7 and additional structure 8). When the shear resistance material 3 exhibits a function of causing a relative rotational deformation about the horizontal axis between the opposing surfaces of the two

structures

7 and 8 when acting, the additional fixing of the main body 32 is performed. The surface on the material 4 side is a convex three-dimensional shape such as a spherical surface or a curved surface that does not hinder the relative rotational deformation of the two

structures

7 and 8 like the surface on the shear resistance material 3 side of the main fixing material 2 shown in FIG. It is formed into a shape.

“A shape that does not hinder the relative rotational deformation of both structures” means that the structure 8 on the main body 32 side remains in a state where the fixing portion 31 of the shear resistance material 3 is fixed to the structure 7 on that side. In other words, the shape of the main body 32 having a convex shape is formed so that it can be rotationally deformed relative to the structure 7 on the fixing portion 31 side. “Rotating and deforming along the surface of the main body 32” means, for example, when viewed in a horizontal direction parallel to the contact surface of one structure (main structure 7) and the other structure (additional structure 8). In addition, the other structure (additional structure 8) rotates along the surface of the main body 32 with respect to the one structure (main structure 7) so as to cause a slip.

As described above, the shear resistance material 3 is fixed in one structure (main structure 7) in the fixing portion 31, and is embedded in the other structure (additional structure 8) in the main body portion 32, thereby the other structure. A shearing force in a direction perpendicular to an axis of a tension member 5 described later is received from the structure 8 and transmitted to one structure 7. Or conversely, the shearing force received from one structure 7 is transmitted to the other structure 8. As described above, the fixing unit 31 enters (inserts) into the groove 7b formed from the surface (boundary surface) of the one structure 7 on the other structure 8 side, and the groove 7b is filled with mortar, adhesive, or the like. By being filled with the material, it is fixed to one of the structures 7.

FIG. 1 shows a state in which the fixing portion 31 of the shear resistance material 3 is fitted and fixed in the main structure 7 and the main body portion 32 is embedded in the additional structure 8, but the fixing portion 31 is shown in FIG. 1. The main body 32 may be embedded in the main structure 7 by being fitted and fixed in the additional structure 8. In any case, the region sandwiched between the main fixing material 2 fixed in the main structure 7 and the shear resistance material 3 arranged at the boundary between the main structure 7 and the additional structure 8 has no shear. A shearing force may be transmitted from the fixing portion 31 or the main body portion 32 of the shearing resistance material 3 that bears the force. Hereinafter, a region sandwiched between the main fixing material 2 and the shear resistance material 3 is referred to as a “cured body 6” for convenience.

When the shearing force is transmitted from the shearing resistance material 3 to the “curing body 6” in a region sandwiched between the main fixing material 2 and the shearing resistance material 3, the fixing portion 31 and the main body portion 32 are included in the “curing body 6”. This occurs when one of the above is fixed (embedded). When the main structure 7 is an existing structure, the “cured body 6” is formed by filling the main structure 7 with the filler after the main fixing material 2 and the shear resistance material 3 are arranged. When 7 is a new structure, it is concrete (reinforced concrete), mortar, or the like constituting the main body 7 when the main structure 7 is constructed. Regardless of existing or newly established, the hardened body 6 is concrete, mortar, adhesive, etc., and refers to a cement-based material that develops compressive strength by being mainly cured, but is an organic adhesive. Is also included.

When the fixing portion 31 of the shear resistance material 3 faces the main structure 7 side as shown in FIG. 1, the fixing portion 31 is formed in a position that fits in the cross section of the cured body 6 and is embedded in the cured body 6. A shearing force is transmitted from the portion 31 to the cured body 6. When the fixing unit 31 is formed so as to be located outside the range of the cross section of the cured body 6, the fixing unit 31 is not embedded in the cured body 6 but fits in the groove 7 b. No shear force is directly transmitted to 6, but indirectly. When the fixing portion 31 faces the additional structure 8 side, at least a part of the main body portion 32 is embedded in the cured body 6, so that shear force is transmitted from the embedded portion to the cured body 6.

When at least a part of either the fixing portion 31 or the main body portion 32 of the shear resistance material 3 is embedded in the cured body 6, the shear resistance material 3 is associated with the relative displacement of the additional structure 8 with respect to the main structure 7. Bears a shearing force, and when the shearing force is transmitted from the shear resistance material 3 to the main structure 7, a part of the shearing force is also transmitted to the cured body 6. As shown in FIG. 1, when the outer peripheral surface of the fixing portion 31 of the shear resistance material 3 is in contact with the casing of the main structure 7 and the inner peripheral surface of the fixing portion 31 is in contact with the cured body 6, Shear force is transmitted from the outer peripheral surface to the housing of the main structure 7, and shear force is transmitted from the inner peripheral surface to the cured body 6.

An insertion hole 3a is formed in the center of the shear resistance material 3 when viewed in the axial direction, through the main body 32 in the axial direction, and through which the tensile material 5 fixed to the

structures

7 and 8 is inserted. Is done. This insertion hole 3 a is caused by a bending moment acting between the main structure 7 and the additional structure 8 while applying a shearing force to the shear resistance material 3 when the additional structure 8 is displaced relative to the main structure 7. A tensile member 5 that causes a tensile force to act between the main structure 7 and the additional structure 8 is inserted. Even when the main structure 7 and the additional structure 8 are relatively displaced between the main structure 7 and the additional structure 8 in the opposing direction, the tensile force acts directly and alternately with the compressive force.

The tensile material 5 is connected to the additional fixing material 4 in the additional structure 8 and is connected to the main fixing material 2 in the main structure 7, so that, for example, the additional structure 8 is bent and deformed relative to the main structure 7. When trying to do so, the tensile force caused by the bending moment acting from the additional fixing material 4 or the direct tensile force is borne and transmitted to the main fixing material 2. When the main structure 7 is about to bend and deform with respect to the additional structure 8, a tensile force is transmitted from the main fixing material 2 to the additional fixing material 4 through the tensile material 5. The situation where the tensile force is transmitted from the additional fixing material 4 to the main fixing material 2 and the situation where the tensile force is transmitted from the main fixing material 2 to the additional fixing material 4 occur alternately.

The tensile member 5 is also arranged in a state of being inserted through the insertion hole 3a of the shear resistance member 3 and straddling the main structure 7 and the additional structure 8, and fixed to the main structure 7 and the additional structure 8 at both ends. When the main fixing material 2 and the additional fixing material 4 are connected, the shear force applied from the additional structure 8 (main structure 7) together with the shear resistance material 3 is applied to the main structure 7 in the acting direction of the shearing force. It works to transmit to (additional structure 8). In addition, the tensile member 5 supplements the shearing force transmission capability of the shear resistance member 3 and also exhibits a restoring function after a relative rotational deformation between the main structure 7 and the additional structure 8.

The tensile member 5 is maintained in a state where it is fixed to each of the main structure 7 and the additional structure 8 on both sides of the shear resistance member 3, so that the tensile member 5 is bent and deformed within the elastic range, or is bent and stretched. By causing the deformation, the direction of the bending moment follows the relative rotational deformation between the main structure 7 and the additional structure 8 while bearing the bending moment. When the tensile member 5 is bent and deformed within the elastic range, it follows the relative rotational deformation of the two

structures

7 and 8 and, after the rotational deformation ends, acts as a spring to restore the deformation. . Since the main fixing material 2 and the additional fixing material 4 at both ends in the axial direction of the tensile material 5 remain fixed to the main structure 7 and the additional structure 8, the deformation of the tensile material 5 is accompanied by elongation deformation. In this case, it also serves to suppress (limit) separation of the main structure 7 and the additional structure 8.

As the tension member 5, a rod-shaped steel material such as a reinforcing bar, a bolt (anchor bolt) or a steel bar is mainly used, but a fiber reinforced plastic or the like is also used. When a bolt or a threaded reinforcing bar is used for the tension member 5, a nut 33 for fastening the tension member 5 to the shear resistance member 3 may be attached to the tension member 5. In FIG. 1, the nut 33 is disposed only on the side of the additional fixing material 4 of the shear resistance material 3, but the nut 33 may be disposed on both sides of the shear resistance material 3. When the nut is connected to the end portion in the axial direction of the tension member 5, the nut 41 works together with the additional fixing member 4 to secure the fixing effect (pulling resistance) in the

structures

7 and 8. When the nut 33 is connected to a position in contact with the shear resistance material 3, the tension material 5 is joined (regulated) to the shear resistance material 3 so that the position of the tension material 5 relative to the shear resistance material 3 does not fluctuate. To do. The insertion hole 3a of the main body portion 32 is formed at the central portion of the main body portion 32 or the like. However, the insertion hole 3a is not necessarily provided at the central portion of the main body portion 32, and a plurality of holes may be formed.

When the tensile material 5 functions as a resistance element against the shearing force in the direction perpendicular to the axis, the resistance force corresponding to the projected area in the shearing force acting direction of the tensile material 5 is added to the shearing resistance force of the fixing unit 32. When the tensile material 5 is expected to function as a resistance element against a shearing force, a diameter (thickness) and a length corresponding to the expected shearing resistance force are given.

The tensile material 5 is sheared by being screwed into an insertion hole 3a formed in the shear resistance material 3 or simply passing through the insertion hole 3a and filling the insertion hole 3a with an adhesive or mortar. It may be integrated with the main body 32 of the material 3. However, in order to transmit most of the tensile force borne by the tensile material 5 to the main fixing material 2 when the additional structure 8 is about to be displaced relative to the main structure 7, the tensile material 5 is used as the shear resistance material 3. It is better to ensure a certain amount of clearance between the inner peripheral surface of the insertion hole 3a and the surface of the tensile material 5 in a state where the insertion is made through the insertion hole 3a of the (main body portion 32). When the tensile material 5 is screwed to the shear resistance material 3, the tensile force borne by the tensile material 5 is easily transmitted to the shear resistance material 3, but the tensile material 5 simply passes through the shear resistance material 3. This is because the tensile force of the tensile material 5 is easily transmitted to the main fixing material 2.

The tensile material 5 is installed between the main fixing material 2 and the additional fixing material 4 so as to penetrate the shear resistance material 3, so that it is parallel to the boundary surface between the additional structure 8 and the main structure 7. When the bending moment about the horizontal axis acts or when relative displacement occurs between the additional structure 8 and the main structure 7 without any bending moment, the additional fixing material 4 and A tensile force acts between the main fixing material 2 and the tensile material 5. The tensile material 5 bears a tensile force when the distance between the main fixing material 2 and the additional fixing material 4 is to be increased.

As long as the tensile force is transmitted from the tensile material 5 to the main fixing material 2 in the main structure 7, as long as the shear resistance material 3 maintains the state of contact with the interface between the main structure 7 and the additional structure 8, As indicated by arrows in FIG. 1, a compressive force acts on the cured body 6 such as concrete existing between the main fixing material 2 and the shear resistance material 3. At the same time that the cured body 6 bears the compressive force, a reaction force of the compressive force acts on the main fixing material 2 and the shear resistance material 4.

At this time, since the main fixing material 2 and the shear resistance material 3 are paired and apply a compressive force in the axial direction to the cured body 6, the axial direction of the cured body 6 is orthogonal to the axial direction of the cured body 6. For the flat surface, it is appropriate that the main fixing material 2 and the shear resistance material 3 have the same projected area. In the drawing, the fixing portion 31 is formed in an annular shape from the outer periphery of the main body portion 32 to the inner peripheral side, and the inner peripheral surface of the fixing portion 31 matches the outer peripheral surface of the cured body 6. Therefore, the projected area in a range including the fixing portion 31 that can apply a compressive force from the shear resistance material 3 to the cured body 6 is equal to the projected area of the main fixing material 2. The portion of the main body 32 on the outer peripheral side of the fixing unit 31 applies a compressive force to the housing of the main structure 7 existing on the outer peripheral side of the cured body 6.

The hardened body 6 between the main fixing material 2 and the shear resistance material 3 bears a compressive force and resists the compressive force, so that the main fixing material 2 is in the main structure 7 (in the hardened body 6). The fixed state is maintained, and the shear resistance material 3 is arranged at the boundary between the main structure 7 and the additional structure 8.

When the main structure 7 is an existing structure, the main fixing material 2 is installed on the back side (bottom side) of the drilling hole 7a formed by core-extruding the existing concrete using a core drill or the like. The hole 7a is filled with a filler and is fixed in the cured body 6 by curing. Since the hardened body 6 is formed of concrete, mortar, adhesive, or the like as described above, it is integrated into the existing structural body by hardening in the hole 7a. When the main structure 7 is a new structure, the main fixing material 2 may be disposed at a position in the main structure 7 at a distance from the boundary surface with the additional structure 8. Since the inner peripheral surface of the cored hole 7a becomes a boundary surface with the cured body 6, in order to ensure adhesion between the main structure 7 and the cured body 6, the inner peripheral surface of the hole 7a If necessary, roughening (applying unevenness) is applied.

Regardless of whether the main structure 7 is an existing structure or a new structure, a tensile material 5 is connected to the main fixing material 2 when the main fixing material 2 is installed or at a time before the installation. The shear resistance material 3 is connected to an intermediate portion in the axial direction of 5, and the main fixing material 2, the shear resistance material 3, and the tension material 5 are embedded in the cured body 6. The section of the tension member 5 protruding from the main structure 7 and the additional fixing material 4 are embedded in the casing when the additional structure 8 is constructed.

When the tensile force from the additional fixing material 4 is transmitted to the main fixing material 2, if the tensile material 5 is connected to the shear resistance material 3 by screwing or the like, the tensile force generated in the tensile material 5 Is transmitted to the shear resistance material 3, the tensile force acting on the main fixing material 2 is reduced, and the compressive force borne by the cured body 6 is also reduced accordingly. In this case, a part of the tensile force transmitted to the shear resistance material 3 and borne by the shear resistance material 3 is between the main structure 7 in the fixing unit 31 fixed in the main structure 7 or a cured body. The main structure 7 is borne by the adhesive force between the main structure 7 and the adhesive member 6 (through the adhesive force).

When the tensile material 5 is not connected to the shear resistance material 3, the tensile material 5 is simply inserted through the shear resistance material 3 as described above. It is transmitted to the fixing material 2 and transmitted from the main fixing material 2 to the cured body 6 as a compression force. In the state in which the tensile material 5 is not connected to the shear resistance material 3, the tensile material 5 is inserted through the insertion hole 3a of the shear resistance material 3 with a clearance, and the clearance is not filled with the filler. 5 corresponds to the case where the nut 33 is not screwed.

When a compressive force as a reaction force of the tensile force is transmitted from the main fixing material 2 to the cured body 6, the main fixing material 2 receives the reaction force from the cured body 6 as a supporting pressure on the entire surface. The whole is in a state of bearing a bending moment in a direction perpendicular to the axis around the axis (connecting portion with the tensile material). It does not matter whether the shape of the main fixing material 2 is a flat plate shape or a curved surface shape. However, when deformation of the main fixing material 2 is assumed due to a bending moment load due to a support pressure, FIG. As shown, by forming the surface of the main fixing material 2 on the side of the shear resistance material 3 into a curved surface (Claim 2), it is possible to give the main fixing material 2 stability and safety against bending deformation. .

Forming the main fixing material 2 in a curved shape means that the surface of the main fixing material 2 on the side of the shear resistance material 3 is convex toward the shear resistance material 3 as shown in FIG. 1, FIG. 2, FIG. 4 to FIG. Forming a curved surface such as a spherical surface, an elliptical curved surface, or a conical curved surface. However, even if the main fixing material 2 has a flat plate shape, a protrusion (rib) or the like is formed on at least one of the main structure 7 side surface and the additional structure 8 side surface of the main fixing material 2. Therefore, the main fixing member 2 does not necessarily have a curved surface shape, and may have a flat plate shape.

When the tensile force from the additional fixing material 4 fixed in the additional structure 8 is transmitted to the tensile material 5 or the main fixing material 2, the additional fixing material 4 generates a reaction force of the tensile force from the additional structure 8. Since receiving is the same as that of the main fixing material 2, the surface of the additional fixing material 4 on the side of the shear resistance material 3, or the surface on the opposite side is formed into a convex curved surface, or a protrusion is formed on the additional fixing material 4. Sometimes it forms. Further, the additional fixing material 4 is provided in the additional structure 8 according to the axial section (distance) of the tensile material 5 embedded in the additional structure 8 such as the width and depth of the additional structure 8. A plurality may be arranged in the axial direction and connected to the tension member 5.

As described above, when at least a part of either the fixing portion 31 or the main body portion 32 of the shear resistance material 3 is embedded in the cured body 6 in a region sandwiched between the main fixing material 2 and the shear resistance material 3. In addition, when the shear resistance material 3 bears a shearing force, a part of the shearing force is also transmitted to the cured body 6. At this time, the cured body 6 bears a shearing force in a direction perpendicular to the axis. In order to reliably prevent breakage caused by bearing this shearing force, as shown in FIG. Inside, “within the main structure in the region sandwiched between the main fixing material and the shear resistance material”, the region is constrained from the periphery, for example, a spiral shape or a hoop shape It is appropriate to arrange the restraining muscles 9 (claim 3). The restraint muscle 9 restrains the inner portion of the hardened body 6 from the peripheral portion, thereby increasing the shear strength of the hardened body 6 and ensuring the safety against shear fracture.

A position in the main structure at a distance from the interface with the additional structure, between the main structure and the additional structure that are adjacent to each other and can behave independently when a horizontal force is applied. The main fixing material is fixed to the additional structure, and the additional fixing material is fixed at a position away from the boundary surface with the main structure in the additional structure, and a tensile force is applied between the main fixing material and the additional fixing material. In order to construct a tensile material that can be used, a tensile force can be applied to the main fixing material through the tensile material when the distance between the main fixing material and the additional fixing material is to be increased.

When a tensile force is transmitted to the main fixing material, the hardened body such as concrete existing between the shear resistance material and the main fixing material arranged across the boundary between the main structure and the additional structure is compressed. In order to maintain the main fixing material in a fixed state, it is possible to maintain the state in which the main fixing material is fixed in the main structure. Since the shear resistance material spans the boundary between the main structure and the additional structure and bears the shearing force between the main structure and the additional structure, eventually, the adjacent main structure and the additional structure The fixing device shears between the main structure and the additional structure in both the joint where the tensile force due to the bending moment acts and the joint where the tensile force and the compressive force directly act alternately. Force and tensile force can be transmitted.

The main fixing material is embedded in the main structure, the additional fixing material is embedded in the additional structure, and added to the main fixing material through the shear resistance material arranged at the boundary between the main structure and the additional structure. It is the longitudinal cross-sectional view which showed a mode that the tension | tensile_strength material was constructed between the fixing materials. It is the perspective view which showed the junction part of the wall of the existing structure, or the beam and the beam of a new structure as an example of the main structure and the additional structure in which the fixing device shown in FIG. 1 is embedded. It is the perspective view which showed a mode that the fixing device shown in FIG. 1 was installed between the foundation (footing) of the existing structure as a main structure, and the foundation of the new structure as an additional structure. FIG. 4 is an enlarged perspective view of the fixing device shown in FIG. 3 when the main fixing material is formed in a hemispherical shape. FIG. 4 is an enlarged perspective view of the fixing device shown in FIG. 3 when a main fixing material is formed in a conical surface. FIG. 6 is a perspective view showing a state in which helical shear reinforcement reinforcing bars that reinforce a cured body are arranged between a main fixing member and a shear resistance member of the fixing device shown in FIG. 5. (A) is an elevation view showing a specific example of the fixing device formed in a shape different from that of the fixing device shown in FIG. 1 and the like, and (b) is a longitudinal section showing a hole for housing the fixing device shown in (a). FIG. (A) is an elevation view showing another specific example of the fixing device formed in a shape different from the fixing device shown in FIG. 1 and the like, and (b) shows a drilling hole in which the fixing device shown in (a) is accommodated. FIG.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is constructed between the main structure 7 and the additional structure 8 that are constructed in contact with each other, are adjacent by being installed, etc., and can behave independently when a horizontal force is applied, A fixing device for shear force transmission with a tensile resistance function (hereinafter, fixing) between the main structure 7 and the additional structure 8 that transmits a shear force in a direction perpendicular to the direction in which both the

structures

7 and 8 face each other. A configuration example and an installation example of the apparatus 1 are shown. The joining part of the main structure 7 and the additional structure 8 is not limited as long as they are in contact with each other, and the main structure 7 and the additional structure 8 may be a new structure or an existing structure. Absent.

The fixing device 1 includes a main fixing material 2 to be fixed (embedded) at a position away from a boundary surface with the additional structure 8 in the main structure 7, and a boundary between the main structure 7 and the additional structure 8. Fixed at a position in the additional structure 8 at a distance from the boundary surface between the main structure 7 and the shear resistance material 3 disposed between the main structure 7 and the additional structure 8. ) Additional fixing material 4 and a tensile material 5 installed between the main fixing material 2 and the additional fixing material 4. The additional fixing material 4 is fixed on a line passing through the main fixing material 2 and the shear resistance material 3, and the tensile material 5 is laid between the main fixing material 2 and the additional fixing material 4 through the shear resistance material 3. A tensile force is borne when the distance between the fixing material 2 and the additional fixing material 4 is to be increased.

1 and 2 show the case where the main structure 7 is a beam, wall, etc. in an existing structure of reinforced concrete, and the additional structure 8 is a beam, etc. in a new structure of reinforced concrete. An installation example of the fixing device 1 to the main structure 7 and the additional structure 8 is shown. When the main structure 7 is an existing structure, a hole 7a for arranging the main fixing material 2 and the shear resistance material 3 is formed in the concrete body of the main structure 7 from the surface side. After the main fixing material 2 and the shear resistance material 3 are arranged in the hole 7a, the hole 7a is filled with a filler made of cement or other material such as concrete, mortar, adhesive or the like. The filler becomes a cured body 6 by curing in the hole 7a. The hardened body 6 may refer to a part of the casing of the new structure (such as concrete).

When the main structure 7 is an existing structure, the fixing device 1 is cut in a state in which, for example, a tensile material 5 is connected to the main fixing material 2 and the shear resistance material 3 is temporarily fixed to the additional fixing material 4 to the tensile material 5. It is inserted into the hole 7a. In a state where the main fixing material 2 is disposed at the back of the hole 7 a, a filler that becomes the cured body 6 is filled from the vicinity of the boundary surface between the main structure 7 and the additional structure 8. Since an insertion hole 3a through which the tensile material 5 is inserted is formed in the shear resistance material 3, if a gap (clearance) is secured around the tensile material 5 in a state where the tensile material 5 is inserted into the insertion hole 3a. Since the filling material can be filled through the insertion hole 3a, the main structure 7 and the additional structure 8 are set in such a state that the distance between the shear resistance material 3 and the main fixing material 2 is adjusted in advance to the distance in the installed state. It may be arranged on the boundary surface.

The tensile material 5 is installed between the main fixing material 2 and the additional fixing material 4, and a tensile force is transmitted to the tensile material 5 from the additional fixing material 4 fixed to the additional structure 8, and further to the main fixing material 2. Therefore, the tension member 5 is connected to the main fixing member 2 and the additional fixing member 4 so that the tensile force can be transmitted by insertion or insertion and filling with the filler. In FIG. 1, the tension material 5 is connected to the main fixing material 2 and the additional fixing material 4 by screwing.

In the drawing, for the purpose of preventing deformation when the main fixing material 2 transmits a tensile force from the tensile material 5 to the cured body 6 as a compressive force, the shear resistance material 3 side of the main fixing material 2 is a convex curved surface (spherical surface). When the main fixing material 2 is viewed in the axial direction, the insertion portion 21 having the insertion hole 2a for inserting the tension material 5 is formed in a cylindrical shape when the main fixing material 2 is viewed in the axial direction. In addition, the screwing section of the tension member 5 is earned. A female screw into which the male screw of the tension member 5 is screwed is cut on the inner peripheral surface of the insertion hole 2a.

In the drawing, the plate (flat plate) -shaped additional fixing material 4 is connected to the tensile material 5 by

nuts

41, 41 fastened on both sides in the thickness direction. They may be formed and connected directly by screwing. As with the main fixing material 2, the additional fixing material 4 may be formed in a curved shape convex to the shear resistance material 3 side, or to a curved surface convex to the opposite side, or both. A plurality of tensile members 5 may be arranged in the axial direction and connected to the tensile member 5.

The shear resistance material 3 includes a fixing unit 31 fixed to one of the main structure 7 and the additional structure 8 and a main body 32 fixed (embedded) to the other structure. Is fixed to one structure and the main body 32 is fixed (embedded) to the other structure, so that when one structure moves relative to the other structure while being parallel to each other, the tension is Shear force in a direction perpendicular to the axis of the material 5 is transmitted to the other structure. In the drawing, the fixing portion 31 is fitted and fixed in the groove 7b formed in the main structure 7, and the main body portion 32 is embedded in the additional structure 8. However, the fixing portion 31 is fixed to the additional structure 8 and the main body 32 is fixed. The portion 32 may be embedded in the main structure 7. As shown in FIG. 1, the groove 7b may be a part of the hole 7a or may be formed separately from the hole 7a.

In FIG. 1, the fixing portion 31 of the shear resistance material 3 protrudes from the inner side closer to the center side (insertion hole 3 a side) than the outer periphery (edge) of the main body portion 32 toward the main structure 7 side. The fixing unit 31 may protrude from the outer periphery (edge) of the main body 32. When the fixing unit 31 protrudes inward from the outer periphery of the main body 32 as shown in FIG. 1, when the fixing unit 31 is fitted into the groove 7 b of the main structure 7, The portion on the outer peripheral side comes into contact (contact) with the boundary surface of the main structure 7 with the additional structure 8 and is locked to the main structure 7 side.

For this reason, when the tensile force acts on the portion of the main body portion 32 on the outer peripheral side from the fixing portion 31 from the main structure 7 side to the additional structure 8 side through the tensile material 5, the tensile force is applied to the casing of the main structure 7. By transmitting to, it is possible to resist the tensile force. As a result, the shear resistance material 3 protrudes from the main body 32 to the additional structure 8 side and is embedded in the additional structure 8 with respect to the tensile force acting from the main structure 7 side to the additional structure 8 side. The additional structure 8 functions to behave integrally with the main structure 7 via the material 5 and the additional fixing material 4. The portion on the outer peripheral side of the fixing portion 31 is against the bending moment acting on the boundary surface when the additional structure 8 tries to rotate and deform around the horizontal axis in the direction orthogonal to the opposing direction with respect to the main structure 7. It also becomes a resistance element.

In the shear resistance material 3, the surface on the main structure 7 side of the inner peripheral side portion of the annular fixing portion 31 including the fixing portion 31 is in contact with the hardening body 6 in the drilling hole 7 a, and this hardening body 6 The area of the contact surface with the main fixing material 2 is paired with the hardened body 6 to apply a compressive force in the axial direction of the tensile material 5. The main fixing material 2 maintains the state of being fixed in the hardened body 6 by resisting the compressive force that the hardened body 6 in the hole 7 a receives from the shear resistance material 3 and the main fixing material 2.

The shear resistance material 3 is formed with one or a plurality of insertion holes 3a through which the tensile material 5 is inserted in a central portion or the like in a plane parallel to the boundary surface between the main structure 7 and the additional structure 8. The tension member 5 is inserted into the hole 3a with a clearance or screwed as shown in FIG. When a plurality of insertion holes 3a are formed, a plurality of tension members 5 are used, and one tension member 5 is inserted into each insertion hole 3a. When the tension member 5 is screwed, a female screw is cut on the inner peripheral surface of the insertion hole 3a. As shown in FIG. 1, when the tension member 5 is screwed into the insertion hole 3 a, the tension member 5 is integrally connected to the shear resistance member 3 by tightening a nut 33 that is screwed to the male screw. Become.

When the tensile material 5 is inserted through the insertion hole 3a, the clearance may remain or the clearance may be filled with a filler. When the clearance is left and the nut 33 is not screwed into the tension member 5, the tension member 5 and the shear resistance member 3 are tensioned in a situation where the additional structure 8 is separated (separated from the main structure 7). It will be in the state which can be relatively moved to the axial direction of the material 5. In this case, it is assumed that only the tensile material 5 extends with the deformation of the additional structure 8 while the shear resistance material 3 is fixed to the main structure 7, but the shear resistance material 3 is the main structure 7. As long as it remains in the state, the compression force is applied from the main fixing material 2 and the shear resistance material 3 to the cured body 6. When the filler is filled in the clearance and when the tension material 5 is screwed, the tensile force of the tension material 5 is transmitted to the shear resistance material 3 and the tensile force is distributed to the shear resistance material 3 and the main fixing material 2. To be paid.

When the tensile force generated in the tensile material 5 is distributed and applied to the shear resistance material 3 and the main fixing material 2, the tensile force from the shear resistance material 3 is the outer peripheral surface and inner peripheral surface of the fixing portion 31 of the shear resistance material 3. It is transmitted to the housing of the main structure 7 and the cured body 6 by the adhesion force.

The tensile force transmitted from the tensile material 5 to the main fixing material 2 is transmitted from the surface of the main fixing material 2 on the side of the shear resistance material 3 to the hardened body 6 filled in the hole 7a, and the main fixing material. 2 is transmitted as a compressive force from the surface of 2 to the hardened body 6 in the hole 7a. Since the compressive force transmitted to the hardened body 6 is borne by the surface of the shear resistance material 3 on the side of the main fixing material 2, the hardened body 6 in the drilling hole 7 a is the main fixing material 2 and the shear resistance material 3 as described above. Will receive a compressive force in the axial direction.

When a compressive force acts on the cured body 6 from the main fixing material 2, the main fixing material 2 receives a supporting pressure (surface pressure) as a reaction force of the compressing force in the axial direction of the tensile material 5. In the drawing, the main fixing material 2 is formed in a convex curved shape on the shear resistance material 3 side. Since the main fixing material 2 is formed in a curved surface, the projected area in the direction of the shearing force borne by the shearing resistance material 3 is increased, so that the shearing force in the same direction as the shearing force borne by the shearing resistance material 3 is obtained. It also has the ability to resist. As described above, since the main fixing material 2 and the shear resistance material 3 are paired to apply a compressive force to the cured body 6, the surface of the shear resistance material 3 on the main fixing material 2 side may be formed in a convex curved surface. is there.

Since the hardened body 6 in the hole 7a receives a compressive force in the axial direction when a tensile force is transmitted from the tensile material 5 to the main fixing material 2, and receives a shear force borne by the shear resistance material 3, the shear force For the purpose of reinforcement against the above, in FIG. 6, spiral restraint bars 9 are arranged around the outer peripheral side with respect to the axis in the hardened body 6 to restrain the hardened body 6 against deformation. In some cases, the restraining bars 9 may be annular (in the form of a hoop). In this case, a plurality of restraining bars 9 are arranged at intervals in the axial direction in the cured body 6.

FIG. 2 shows a specific arrangement example of the fixing device 1 shown in FIG. 1 at the joint portion (boundary surface) between the main structure 7 and the additional structure 8. Here, as described above, when the main structure 7 is a frame such as a beam or wall of an existing structure, and the additional structure 8 is a frame such as a beam of a new structure, both the

structures

7 and 8 are used. The arrangement and the arrangement state (interval) of the fixing device 1 when the boundary surface is viewed in the length direction are shown.

In the example of FIG. 2, since both the main structure 7 and the additional structure 8 are a casing having a shape in which the boundary surface is continuous, the fixing device 1 is arranged at intervals along the boundary surface in the horizontal direction. Here, in order to supplement the function of the fixing device 1 in addition to the fixing device 1 and to enhance the unity of the main structure 7 and the additional structure 8, a joint 10 that straddles both

structures

7 and 8 is arranged, Established on both sides. A main reinforcing bar 11 and a shear reinforcing bar 12 are arranged in the beam of the additional structure 8.

In FIG. 3, when the main structure 7 is a foundation (footing) of an existing structure and the additional structure 8 is a foundation (footing) of a new structure, between the main structure 7 and the additional structure 8. An arrangement example in which the fixing device 1 is installed across both

structures

7 and 8 in order to transmit shearing force and tensile force is shown. In this example, since the main structure 7 and the additional structure 8 have a shape having a distance in the horizontal direction and the height direction (vertical direction), a plurality of fixing devices 1 are arranged in the horizontal direction and the height direction, respectively.

In the example of FIG. 3, the distance (depth) between the main structure 7 and the additional structure 8 when viewed in the axial direction (the erection direction) of the tensile material 5 is large. The fixing length (buried section) of the tension member 5 in the additional structure 8 is increased. In this example, there is no qualitative difference between the distance of the main structure 7 and the distance of the additional structure 8 when viewed in the axial direction of the tensile material 5, but from the section where the tensile material 5 is embedded in the main structure 7. The section embedded in the additional structure 8 is long.

In FIG. 3, the reason why the fixing length to the main structure 7 is relatively smaller than the fixing length of the tensile material 5 to the additional structure 8 is that the main fixing material is passed from the additional structure 8 through the tensile material 5. This is because the tensile force transmitted to 2 is borne as a compressive force on the cured body 6 in the main structure 7, so that it is not always necessary to ensure a large embedded section in the main structure 7. On the other hand, in the additional structure 8, an embedded section in the additional structure 8 is made large so that the tensile force from the additional structure 8 is transmitted to the main structure 7 through the adhesive force of the entire length of the tensile material 5. .

4 to 6 show detailed examples of the fixing device 1 shown in FIG. 4 shows a case where the main fixing material 2 is formed in the same three-dimensional shape as the main fixing material 2 of the fixing device 1 shown in FIGS. 1 and 2, and FIG. 5 shows a case where the main fixing material 2 is formed in a conical curved shape. Reference numeral 6 denotes a case where the spiral constraining bars 9 whose axes are oriented in the axial direction of the tensile material 5 are arranged in the hardened body 6 in the hole 7a as described above. The restraining muscles 9 are arranged closest to the periphery from the material axis in the cured body 6 so that the restraining effect acts on the entire cured body 6.

The arrangement example of the fixing device 1 shown in FIGS. 1 to 6 shows a case where the axial direction of the tensile material 5 is oriented in the horizontal direction, but the axial direction of the tensile material 5 is oriented in the vertical direction or the horizontal direction. It may be arranged in a direction inclined in both vertical directions.

7 and 8 show a specific example of the fixing device 1 formed in a shape different from that of the fixing device 1 shown in FIG. 1 and the like, and an example of forming the hole 7a corresponding to the fixing device 1. FIG. 7 (a) and 8 (a) are cross-sectional areas passing through the axis of the main body 32 of the shear resistance material 3, that is, a direction perpendicular to the axial direction of the main body 32 (the main structure 7 and the additional structure). 8 shows an example in which the projected area (cross-sectional area) when viewed in the in-plane direction of the boundary surface with 8 is increased and the shear resistance of the main body 32 is increased.

In particular, in FIGS. 7A and 8A, the main body 32 is formed in a two-stage shape in the axial direction of the tensile material 5. FIG. FIG. 7A shows the rigidity of the main body 32 and the additional structure while increasing the cross-sectional area when viewed in the direction orthogonal to the axial direction by increasing the cross-sectional area of the two-step portion of the main body 32. This is a case where the shear resistance in 8 is increased. FIG. 8- (a) increases the cross-sectional area when viewed in the direction orthogonal to the axial direction by increasing the area in the axial direction of the main fixing material 2 side portion of the two-stage portion of the main body 32. In this case, the distance between the inner peripheral surfaces of the fixing unit 31 is increased while the shear resistance force in the main structure 7 of the main body unit 32 is increased.

7- (a) and 8- (a), the insertion portion 21 into which the tension member 5 is screwed is formed on the entire length in the axial direction while forming the surface of the main fixing member 2 in a hyperboloid shape. ing. Each of FIG. 7 and FIG. 8B shows a hole 7b into which the fixing device 1 of FIG.

1 …… Shearing force transmission fixing device,
2 ... Main fixing material, 21 ... Insertion part, 2a ... Insertion hole,
3 ... Shear resistance material, 31 ... Fixing part, 32 ... Body part, 3a ... Insertion hole, 33 ... Nut,
4 …… Additional fixing material, 41 …… Nut,
5 ... Tensile material, 6 ... Hardened body,
7: Main structure, 7a: Drilling hole, 7b: Groove,
8 ... additional structure, 9 ... restraint,
10: Joint, 11 ... Main, 12 ... Shear reinforcement.

Claims

Installed between the main structure and the additional structure, which are adjacent to each other in contact with each other and can behave independently when a horizontal force is applied, between the main structure and the additional structure. A fixing device that transmits a shearing force in a direction perpendicular to a direction in which both structures face each other;
A main fixing material fixed at a position away from a boundary surface with the additional structure in the main structure, and the main structure and the additional at the boundary between the main structure and the additional structure A boundary between the main structure in the additional structure and a shear resistance material disposed between the structures and bearing a shearing force when the main structure and the additional structure are relatively displaced An additional fixing material fixed on a line passing through the main fixing material and the shear resistance material at a distance from the surface, and the shear resistance material is penetrated between the main fixing material and the additional fixing material. And a tension member that is connected to the main fixing material and the additional fixing material and bears a tensile force when the distance between the main fixing material and the additional fixing material is to be increased. A fixing device for shear force transmission with a tensile resistance function.
2. The fixing device for shear force transmission with a tensile resistance function according to claim 1, wherein the surface of the main fixing material on the side of the shear resistance material is a curved surface.
The restraint bar which restrains the area | region from the periphery is arranged in the area | region pinched | interposed into the main fixing material and the shear resistance material in the main structure, or The fixing device for shear force transmission with a tensile resistance function according to claim 2.