JP3177016U - Reinforcing brackets for concrete cross-section repair - Google Patents

Abstract

The present invention provides a reinforcing metal fitting for cross-sectional repair that facilitates cross-section repair of concrete and prevents peeling of a filled cross-section repair material.
An anchor pin 2 fixed to a hole drilled in concrete, and a cap member 3 provided at a base end portion thereof and formed integrally with the anchor pin, the cap member in a radial direction. A plurality of antiques 7 are provided. Since the cap member 3 is integral with the anchor pin 2, there is no fear of peeling off at the interface with the original concrete frame, and the cross-sectional repair material can be prevented from peeling off. In addition, since the cap member 3 is formed with a plurality of urns 7 in the radial direction, when the cross-sectional defect is filled in the cross-sectional defect with the anchor pin fixed to the hole drilled in the concrete However, the cross-sectional repair material can be filled in the tip portion side of the anchor pin through the space between the urn 7 and the urn of the shade member 3.
[Selection] Figure 1

Description

  The present invention relates to a reinforcing metal fitting for repairing a cross section of concrete used for a cross section repairing work in which a section of the concrete is filled with a cross section repair material.

  2. Description of the Related Art Conventionally, there is known a reinforcing metal fitting for repairing a cross section of a concrete used for a cross section repairing work in which a cross-section repair material is filled in a peeled portion of the concrete.

  Conventionally, a repair bracket for a concrete structure is known as a reinforcing bracket for repairing a cross section of this type of concrete (see FIG. 7). Here, FIG. 7A is a view showing an anchor part of a conventional repair fitting for a concrete structure, and FIG. 7B is a cross-sectional view of a blade member of the repair fitting for the concrete structure. (C) is a figure which shows the bottom view of the blade member. This repair fitting for a concrete structure includes an anchor 11 provided with a male screw at a base end, a connecting nut 113 coupled to the male screw of the anchor 11, and a blade member 130 attached to the connecting nut 113. Met. The blade member 130 coupled to the connecting nut 113 of the anchor 11 is obtained by fixing a plurality of urns 132 to the mounting disc 131 in the radial direction, and the mounting disc 131 is opened at the center. The screw 11 is screwed to the connecting nut 113 of the anchor 11 by a flat head screw 134 through the mounting hole 133. The urn 132 of this blade member 130 is positioned by being joined to an attachment recess 135 formed in a direction perpendicular to the plane of the attachment disk 131, and is fixed by welding at that position.

  As a repair method using the repair fitting of the concrete structure, the anchor 11 is first fixed to the concrete frame, and then the connecting nut 113 is attached to the anchor 11. Then, a cap is fitted so that the repairing material does not enter the female screw of the connecting nut 113, and the repairing material is filled in the hollow portion to the same height as the connecting nut 113. Then, the cap is removed from the connecting nut 113, the blade member 130 is coupled to the connecting nut 113, and the cavity is filled with a repair material to the same height as the surface of the concrete frame to complete the repair work. It was.

JP 2002-115400 A

  In the above-described conventional repair fitting for a concrete structure, the connecting nut 113 is coupled to the male screw of the anchor 11 and the blade member 130 is attached to the connecting nut 113. Therefore, in the repairing process of the concrete structure, the anchor 11, the step of attaching the connecting nut 113 to the connecting nut 113, the step of fitting the cap into the female screw of the connecting nut 113, the step of removing the cap from the connecting nut 113, and the step of connecting the blade member 130 to the connecting nut 113 are required. In a narrow space such as a hollow part of a concrete frame, these operations were very complicated and laborious.

  Further, a cap is fitted into the female screw of the connecting nut 113 and the cavity is filled with a repair material to a height similar to the height of the connecting nut 113, and then the cap is removed from the connecting nut 113, Since the blade member 130 is connected to the nut 113 and the cavity is filled with the repair material up to the same height as the surface of the concrete frame, the step of removing the cap and the step of filling the replenishment material in two portions Was required, and the working time was increased.

  Further, since the anchor 11 and the coupling nut 113 are screw-coupled and the coupling nut 113 and the blade member 130 are screw-coupled, if the screw coupling is insufficient, the filled repair material is the original concrete frame. There was also a problem that it might peel off at the interface. In particular, after filling the repair material, it cannot be confirmed whether or not the screw connection is insufficient.

  The present invention has been made in view of the above problems, and provides a reinforcing bracket for repairing a concrete section that facilitates the construction of a concrete section repair and prevents the filled section repair material from peeling off. Objective.

  In order to solve the above-mentioned problems and achieve the above object, the first aspect of the present invention is a reinforcing bracket for cross-sectional repair of concrete used for cross-section repair work in which a section of concrete is filled with a cross-section repair material. An anchor pin fixed to a hole drilled in the concrete and a cap member provided at a base end portion of the anchor pin and integrally formed with the anchor pin, and the cap member is directed in the radial direction. A plurality of urns are formed.

  According to the present invention, since the cap member is integrally formed with the anchor pin, the cap is fitted into the female screw of the connecting nut 113, as in the conventional process (the step of attaching the connecting nut 113 to the anchor 11). The process, the step of removing the cap from the connecting nut 113, and the step of connecting the blade member 130 to the connecting nut 113) are not required, and the construction of the concrete cross section can be easily repaired, and the working time can be shortened. it can. In addition, since the cap member is formed integrally with the anchor pin, there is no risk that the cross-sectional repair material will be peeled off at the interface with the original concrete frame as in the case where the cap member and the anchor pin are formed by screw connection, The cross-section repair material can be prevented from peeling off. In addition, since the cap member is formed with a plurality of urns in the radial direction, even when the cross-sectional defect material is filled with a cross-sectional repair material in a state where the anchor pin is fixed to the hole drilled in the concrete, The cross-sectional repair material can be filled on the tip portion side of the anchor pin through the space between the urns of the cap member. Thereby, a cross-sectional repair material can be easily filled in the whole area of a cross-sectional defect | deletion part.

  Of the present invention, the second aspect is a reinforcing bracket for repairing a concrete cross section according to the first aspect, wherein the anchor pin is formed by driving a core rod to form a tip of the anchor pin. This is a core rod driving type anchor capable of expanding the expansion portion.

  According to the present invention, the anchor pin uses the core rod driving type anchor that can expand the extended portion of the tip portion of the anchor pin by driving the core rod with a hammer. Thus, a separate driving rod is not required, and no additional resin is required unlike an adhesive anchor, so that the cross section of the concrete can be easily repaired.

  A third aspect of the present invention is the reinforcing bracket for repairing a concrete cross section according to the first aspect or the second aspect of the present invention. It curves in the direction of the tip.

  According to the present invention, since the curl of the cap member is curved in the direction of the tip of the anchor pin as it goes in the radial direction, the rigidity of the curl of the cap member becomes stronger, and the cross-section filled in the peeling site of the concrete We can hold down restoration material strongly.

  According to the reinforcing bracket for repairing a cross section of concrete according to the present invention, since the cap member is formed integrally with the anchor pin, it is possible to facilitate the construction of the cross section of the concrete and prevent the cross section repair material from peeling off. can do.

It is a top perspective view of the reinforcement metal fitting for cross-section restoration of concrete in one embodiment of the present invention. It is a top view of the reinforcing metal fitting for cross-sectional repair of the concrete. It is a lower perspective view of the reinforcing bracket for cross-sectional repair of the same concrete. It is a bottom view of the reinforcing bracket for cross-sectional repair of the concrete. It is a cross-sectional process figure which shows the cross-section repair work process performed using the reinforcing metal fitting for cross-section repair of the concrete. It is a figure which shows the flowchart of the cross-section repair work process performed using the reinforcement metal for cross-section repair of the concrete. (A) It is a figure which shows the anchor component of the repair metal fitting of the conventional concrete structure. (B) It is sectional drawing of the blade member of the repair metal fitting of the concrete structure. (C) It is a figure which shows the bottom view of the blade member.

  Hereinafter, an embodiment of a reinforcing bracket for repairing a cross section of concrete according to the present invention will be described with reference to the drawings. Here, FIG. 1 is a top perspective view of a reinforcing bracket for repairing a cross section of concrete in an embodiment of the present invention, FIG. 2 is a top view of the reinforcing bracket for repairing a cross section of the concrete, and FIG. FIG. 4 is a bottom perspective view of the reinforcing bracket for cross-sectional repair, and FIG. 4 is a bottom view of the reinforcing bracket for cross-sectional repair of the same concrete.

  The concrete cross-section repair reinforcing metal fitting 1 is used for cross-section repair work in which a resin mortar that is a cross-section repair material is filled in a peeled portion of concrete, and is composed of an anchor pin 2 and a cap member 3. Yes. In addition, in this embodiment, although the reinforcement metal fitting 1 for cross-section restoration of concrete was comprised from the anchor pin 2 and the cap member 3, you may provide another component.

  The anchor pin 2 has an anchor pin main body 5 having an extended portion 4 having four slits formed in the axial direction at the tip portion, and a core rod 6 disposed through the anchor pin main body 5. Yes. As the anchor pin 2 of the present embodiment, a core rod driving type anchor in which the expansion portion 4 at the tip end portion of the anchor pin 2 is expanded by driving the core rod 6 with a hammer is used. Then, by striking the base end portion of the core rod 6 protruding from the anchor pin main body 5 with a hammer or the like, the extension portion 4 at the distal end portion embedded in the concrete of the anchor pin main body 4 is opened, and the inner peripheral wall of the concrete hole The anchor pin 2 is bitten into the concrete. A stainless steel material is used as the material for the anchor pin main body 5 and the core rod 6.

  The cap member 3 is integrally provided with the anchor pin 2 at the proximal end of the anchor pin 2 (anchor pin main body 5), and six antiques 7 from the anchor pin 2 (anchor pin main body 5) in the radial direction. Is formed. In this embodiment, six antiques 7 are provided. However, the present invention is not limited to this, and a plurality of antiques such as three or nine may be provided. Further, in the present embodiment, the cap member 3 and the anchor pin 2 are manufactured as one body. Not limited to this, a male screw is provided at the base end portion of the anchor pin main body 5, and an adhesive is applied to the male screw of the anchor pin main body 5 and the female screw at the center of the cap member 3 and screwed together to be integrated. May be. The urn 7 of the shade member 3 is bent in the direction of the distal end portion of the anchor pin 2 in the radial direction from the anchor pin 2 (anchor pin main body 5). In other words, the urn 7 of the cap member 3 is curved toward the distal end portion of the anchor pin 2 as it goes toward the distal end of the urn 7.

  Next, a concrete cross-section repair procedure using the concrete cross-section repair reinforcing metal fitting 1 according to an embodiment of the present invention will be described with reference to FIGS. 5 and 6. Here, FIG. 5 is a process cross-sectional view showing the cross-section repair work process performed using the reinforcing metal fitting for cross-section repair of concrete in one embodiment of the present invention, and FIG. 6 is a flowchart showing the cross-section repair work process. is there. In addition, this embodiment demonstrates the process of repairing the peeling part of the concrete of concrete structures, such as a school, using a cross-section repair material. In the present embodiment, the resin mortar is used as the cross-sectional repair material. However, the present invention is not limited to this, and other cross-sectional repair materials may be used.

  First, a drilling step (S1) is performed. The drilling step is a step for drilling a hole for inserting the anchor pin 2 into the cross-sectional defect where the reinforcing bars corroded and the concrete has fallen off (see FIG. 5A). Specifically, the reinforcing bars corrode and the concrete peels off, and a hole corresponding to the size of the anchor pin 2 is drilled on the exposed concrete surface using a drill. In addition, when a fragile material adheres to the surface of the cross-sectional defect portion of the concrete, the piercing step is performed after the fragile material is dropped.

  Next, an anchor pin fixing step (S2) is performed. In the anchor pin fixing step, the anchor pin 2 is inserted into the hole drilled in the drilling step, and the anchor pin 2 is fixed (see FIGS. 5B, 5C, and 5D). Specifically, after inserting the anchor pin 2 into the hole drilled in the drilling step, the core rod 6 is driven with a hammer to expand the expanded portion 4 at the tip of the anchor pin 2 and drilled. And the anchor pin 2 is fixed. Thus, in this embodiment, since the core rod driving type anchor that can expand the expansion portion 4 at the tip of the anchor pin 2 by driving the core rod 6 with a hammer is used, The anchor pin 2 can be easily fixed.

  Next, a primer application process (S3) is performed. The primer application step is a base treatment step performed to enhance the adhesion of the resin mortar to be applied. By performing this base treatment, the resin mortar is hardly turned over even if the resin mortar is applied. Specifically, a primer corresponding to the resin mortar is applied to the surface of the cross-sectional defect portion of the concrete. In this embodiment, an epoxy resin primer is used as the primer.

  Next, a cross-section repair material filling step (S4) is performed. The cross-section repair material filling step is performed within the working time of the primer applied by the primer application step, and the resin mortar that is the cross-section repair material is filled from the upper part of the cap member 3. As a result, the cap member 3 is formed with six urns 7 in the radial direction, so that the cross-section defect portion is filled with resin mortar while the anchor pin 2 is fixed to the hole drilled in the concrete. Even in this case, the resin mortar can be filled in the distal end side of the anchor pin 2 via the space between the urn 7 and the urn 7 of the cap member 3. Thereby, the resin mortar can be easily filled in the entire cross-sectional defect portion. Further, in this case, since the urn 7 of the cap member 3 is curved in the direction of the distal end portion of the anchor pin 2 as it goes in the radial direction, the rigidity of the urn 7 of the cap member 3 is increased and the concrete is peeled off. The filled resin mortar can be pressed down strongly.

  Next, a curing step (S5) is performed. In the curing process, curing is performed until the resin mortar filled in the cross-sectional defect portion is completely cured.

  As described above, in this embodiment, the cap member 3 is formed integrally with the anchor pin 2, so that the construction for repairing the cross section of the concrete can be easily performed, and the working time can also be shortened. . Further, since the cap member 3 is formed integrally with the anchor pin 2, the cross-sectional repair material may be peeled off at the interface with the original concrete frame as in the case where the cap member and the anchor pin are formed by screw connection. Therefore, the resin mortar can be prevented from peeling off.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. Further, the scope of the present invention is shown not by the above description but by the description of the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

DESCRIPTION OF SYMBOLS 1 Reinforcement metal fitting for cross-section repair of concrete 2 Anchor pin 3 Cap member 4 Expansion part 5 Anchor pin main body 6 Core rod 7 Antique

Claims (3)

Reinforcement bracket for concrete cross-section repair used for cross-section repair work in which the section of concrete is filled with cross-section repair material,
Anchor pins fixed in holes drilled in concrete,
A cap member provided at a base end portion of the anchor pin and formed integrally with the anchor pin;
The shade member is a reinforcing metal fitting for repairing a cross section of concrete in which a plurality of urns are formed in the radial direction.   2. The concrete cross-section repair according to claim 1, wherein the anchor pin is a core rod driving type anchor capable of expanding an extended portion of a tip portion of the anchor pin by driving the core rod. Reinforcing metal fittings. 3. The reinforcing bracket for repairing a concrete cross section according to claim 1, wherein the urn of the cap member is curved toward the tip of the anchor pin as it goes in the radial direction.

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