JP2007278043A - Method and structure for reinforcing reinforced concrete structural member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a structure for reinforcing a reinforced concrete structural member capable of easily reinforcing the reinforced concrete structural member in a short time and effectively increasing the strength thereof. <P>SOLUTION: First, hook-shaped reinforcements 3 are temporarily fixed to the outer peripheral surfaces of a beam 1 on both sides at predetermined intervals in the longitudinal direction. The temporary fixing of the hook-shaped reinforcements 3 is performed by bonding it them to the beam 1 with an adhesive agent 13 after the outer peripheral surfaces of the beam 1 are cleaned. Next, a mortar 5 is so sprayed on both sides of the beam 1 as to cover the hook-shaped reinforcements 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for reinforcing an existing reinforced concrete structural member and a reinforcing structure.

  Conventionally, when reinforcing a reinforced concrete structural member having insufficient earthquake resistance due to an earthquake, as shown in FIGS. 21 and 22, a reinforcing bar 101 is arranged around the reinforced concrete structural member 100 so as to surround the reinforcing bar 101. The mold 102 is installed and filled with a cement-based material 103 such as concrete or mortar (FIG. 21), or the spray mortar 104 is sprayed without using the mold 102 (FIG. 22), and the cross section is increased. There is a method for reinforcing a reinforced concrete structural member.

Also, in the case of concrete cracking due to salt damage, etc., or corrosion of the reinforcing bar due to water leakage, etc. in the reinforced concrete structural member, remove the deteriorated part of the cross-sectional surface layer part of the reinforced concrete structural member and reinforce with reinforcing steel if necessary, In the same way as above, the formwork is installed around the reinforced concrete structural member and filled with concrete or mortar, or the sprayed mortar is sprayed without using the formwork to repair the cross-section surface layer and increase the thickness. There is a way to reinforce. For example, in Patent Document 1, a deteriorated portion of a cross-sectional surface layer portion of a reinforced concrete structural member is scraped and removed, a new reinforcing bar is fixed to an existing reinforcing bar of a reinforced concrete structural member, and the sprayed mortar is sprayed and reinforced. A method is disclosed.
JP-A-6-50006

  However, in the above-described method for reinforcing a reinforced concrete structural member, a hole for embedding the reinforcing bar is cut into a sound existing reinforced concrete structural member, and thus the healthy reinforced concrete structural member is damaged. Moreover, there is a possibility of damaging a healthy reinforcing bar in the existing reinforced concrete structural member while drilling the hole. Furthermore, the method of installing a mold around a structural member and filling a cement-based material such as concrete or mortar has a problem in that the installation and removal of the mold takes time and effort, and the work efficiency is poor.

  Therefore, the present invention has been made in view of the above-mentioned problems, and its purpose is a concrete structure that can be easily reinforced in a short time and can effectively improve the proof stress of a reinforced concrete structural member. It is providing the reinforcement method and reinforcement structure of a member.

In order to achieve the above object, a reinforcing method for a reinforced concrete structural member according to the present invention is a reinforcing method for an existing reinforced concrete structural member, wherein a reinforcing material is temporarily fixed to the reinforced concrete structural member, and a spraying material is provided so as to cover the reinforcing material. It is characterized by spraying (first invention).
According to the method for reinforcing a reinforced concrete structural member according to the present invention, it is only necessary to temporarily fix the reinforcing material to the existing reinforced concrete structural member and spray the spray material, so that the structural member can be easily reinforced in a short time. .

According to a second invention, in the first invention, the deteriorated portion of the reinforced concrete structural member is removed, and the reinforced concrete structural member from which the deteriorated portion is removed is repaired by spraying a spraying material, and the sprayed repaired portion is subjected to the repair. The reinforcing material is temporarily fixed.
According to the method for reinforcing a reinforced concrete structural member according to the present invention, it is possible to repair and reinforce the deteriorated reinforced concrete structural member by removing the deteriorated portion of the reinforced concrete structural member and spraying the sprayed material on the removed portion. It becomes.

A reinforcing method for a reinforced concrete structural member according to a third aspect of the present invention is the reinforcing method for an existing reinforced concrete structural member, wherein a surface portion of the reinforced concrete structural member is removed, and a reinforcing material is temporarily fixed to the reinforced concrete structural member from which the surface portion has been removed. And spraying material is sprayed so that the said reinforcing material may be covered.
According to the method for reinforcing a reinforced concrete structural member according to the present invention, the surface portion of the reinforced concrete structural member is removed, the reinforcing material is temporarily fixed to the removed portion, and the spraying material is sprayed. Reinforcement is possible without change.

According to a fourth invention, in any one of the first to third inventions, the temporary fastening of the reinforcing material is performed by adhering to the reinforced concrete structural member with an adhesive.
According to the method for reinforcing a reinforced concrete structural member according to the present invention, since the reinforcing material is bonded to the reinforced concrete structural member with an adhesive, it is possible to temporarily fix the reinforced concrete structural member in a short time without damaging the structural member.

According to a fifth invention, in any one of the first to third inventions, the temporary fastening of the reinforcing material is performed by adhering to the reinforced concrete structural member with the spraying material.
According to the method for reinforcing a reinforced concrete structural member according to the present invention, since the reinforcing material is bonded to the reinforced concrete structural member with a spraying material, the structural member can be easily temporarily fixed in a short time without damaging the structural member. Further, since the spraying material is used as the adhesive, it is not necessary to prepare a new adhesive, and the cost can be reduced.

According to a sixth invention, in any one of the first to third inventions, the temporary fastening of the reinforcing material is performed by fixing the reinforcing material to the reinforced concrete structural member with a temporary fastening material such as a hook or a nail. .
According to the method for reinforcing a reinforced concrete structural member according to the present invention, the reinforcing material is fixed to the reinforced concrete structural member with a temporary fixing material such as a concrete cage or a nail, so that it can be securely fixed in a short time.

  A reinforcing structure for a reinforced concrete structural member according to a seventh aspect of the present invention is characterized in that a reinforcing material is temporarily fixed to the reinforced concrete structural member and a spraying material is sprayed so as to cover the reinforcing material.

  According to the reinforcing method and the reinforcing structure of a reinforced concrete structural member according to the present invention, the proof stress of an existing reinforced concrete structural member can be easily improved in a short time.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a reinforcing method and a reinforcing structure for a reinforced concrete structural member according to the present invention will be described in detail with reference to the drawings.

  1 and 2 are a cross-sectional view and a side view, respectively, showing a beam reinforcing structure according to the first embodiment of the present invention.

As shown in FIGS. 1 and 2, the reinforcing structure 2 of the beam 1 made of reinforced concrete is sprayed on both sides of the beam 1 so as to cover the reinforcing material 3 disposed on both sides of the beam 1 and the reinforcing material 3. The spraying material 5 is comprised.
The beam 1 includes concrete 7, a plurality of main reinforcing bars 9 embedded in the concrete 7 along the longitudinal direction of the beam 1, and a plurality of main reinforcing bars 9 embedded in the concrete 7 at predetermined intervals in the longitudinal direction of the beam. It is comprised from the belt reinforcement 11.
In the present embodiment, for example, the reinforcing member 3 is a hook-type reinforcing bar having semicircular shapes at both ends. A plurality of hook-shaped reinforcing bars 3 are embedded at predetermined intervals in the longitudinal direction of the beam 1.
As the spray material 5, for example, mortar is used in the present embodiment. The mortar 5 is sprayed so as to be integrated with the beam 1.

Below, the reinforcement method of the beam 1 which concerns on this embodiment is demonstrated according to a construction procedure.
FIG. 3 is a side view showing a state where the hook-shaped reinforcing bar 3 is temporarily fastened to the beam 1 according to the present embodiment, and FIG. 4 is a cross-sectional view taken along line AA ′ of FIG.

  As shown in FIGS. 3 and 4, first, hook-type reinforcing bars 3 are temporarily fixed to the outer peripheral surfaces on both sides of the beam 1. Temporary fastening of the hook-shaped reinforcing bar 3 is performed by bonding the beam 1 with the adhesive 13 after cleaning the outer peripheral surface of the beam 1. For example, epoxy, acrylic, cyanoacrylate, silicone, or the like can be used as the adhesive 13, and a material having a large adhesive effect depending on the field conditions such as the temperature, the wet state of the surface to be reinforced, and the workability. Select and use as appropriate.

  Next, mortar 5 is sprayed on both sides of the beam 1 so as to cover the hook-shaped reinforcing bar 3. The mortar 5 is sprayed by adjusting a mortar made of a polymer cement-based premix material and reinforcing fibers such as vinylon and alkali-resistant glass with water, then pumping with a spraying machine, and a curing control agent in the middle Are mixed and sprayed so as to cover the hook-shaped rebars and integrated with the beam. In the present embodiment, for example, fiber reinforced polymer cement mortar (trade name: NS Power Shot, manufactured by Nippon Kasei Co., Ltd.) having high peeling resistance and high fluidity was used as the mortar agent.

  In addition, in this embodiment, although the method to spray the mortar 5 without performing surface treatments, such as curling, on the surface of the beam 1 was demonstrated, it is not limited to this, In order to improve the adhesiveness of the mortar 5 In addition, unevenness may be provided on the surface of the beam 1.

  According to the reinforcing method of the reinforced concrete structural member in the present embodiment described above, the hook-shaped reinforcing bars 3 are temporarily fastened to both sides of the beam 1 and only the mortar 5 is sprayed. Therefore, the beam 1 is easily reinforced in a short time. It becomes possible. Further, since the hook-shaped reinforcing bar 3 is bonded to the beam 1 with the adhesive 13, it is possible to easily temporarily fix the beam 1 without damaging the beam 1.

  Next, a second embodiment of the present invention will be described. In the following description, portions corresponding to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.

The reinforcing method of the beam 1 in the second embodiment is to temporarily attach the hook-shaped reinforcing bar 3 by bonding with a mortar 5 using a spraying material.
The hook-type reinforcing bar 3 is temporarily fastened by cleaning the outer peripheral surface of the beam 1 and then bonding the hook-type reinforcing bar 3 to the beam 1 with a mortar 5. And the mortar 5 is sprayed on both sides of the beam 1 so that the hook-shaped reinforcement 3 may be covered similarly to 1st embodiment.

  According to the reinforcing method of the reinforced concrete structural member in the present embodiment described above, the hook-shaped reinforcing bars 3 are temporarily fastened to both sides of the beam 1 and only the mortar 5 is sprayed. Therefore, the beam 1 is easily reinforced in a short time. It becomes possible. Further, since the hook-shaped reinforcing bar 3 is bonded to the beam 1 with the mortar 5, the beam 1 can be temporarily fixed without being damaged. Furthermore, by using the mortar 5 as the adhesive material 13, the properties such as the elastic modulus and the strength are the same as the spray material 5, and the adhesive effect is enhanced, and it is not necessary to newly prepare the adhesive material 13. Costs can be reduced.

Next, a third embodiment of the present invention will be described.
The reinforcing method of the beam 1 in the third embodiment is to reinforce the lower side of the beam 1 instead of reinforcing both sides of the beam 1 of the first embodiment.
5 and 6 are a sectional view and a side view, respectively, showing a reinforcing structure 32 of the beam 1 according to the third embodiment of the present invention.

As shown in FIGS. 5 and 6, the reinforcing structure 32 of the beam 1 includes a reinforcing material 3 disposed on the lower side of the beam 1 and a spraying sprayed on the lower side of the beam 1 so as to cover the reinforcing material 3. It is comprised from the material 5.
As in the first embodiment, a plurality of reinforcing members 3 are embedded under the beam 1 at predetermined intervals using hook-shaped reinforcing bars having semicircular ends at both ends.
The spray material 5 is sprayed so as to be integrated with the beam 1 on the lower side of the beam 1 so as to cover the hook-shaped reinforcing bar 3 using a mortar similarly to the first embodiment.

  According to the reinforcing method of the reinforced concrete structural member in the present embodiment described above, the beam can be easily reinforced in a short time by temporarily fastening the hook-shaped reinforcing bar 3 to the lower side of the beam 1 and spraying the mortar 5. It becomes possible.

  In the first to third embodiments, the method for reinforcing the two surfaces on both sides of the beam 1 and the one surface on the lower side of the beam 1 has been described. However, the reinforcement points are limited to these points. For example, it is possible to reinforce the three surfaces on both sides and the lower side of the beam 1 and the outer peripheral surface of the beam 1, and select the location to be reinforced according to the load conditions to be loaded on the beam 1 and the site conditions. Is possible.

Next, a fourth embodiment of the present invention will be described.
In the fourth embodiment, the beam 1 is reinforced by temporarily fixing the hook-shaped reinforcing bar 3 to the beam 1 using a concrete rod as the temporary fixing material 17.
FIG. 7 is a cross-sectional view showing a state in which the hook-shaped reinforcing bar 3 according to the fourth embodiment of the present invention is temporarily fixed to the beam 1 with a U-shaped concrete rod 17a.
As shown in FIG. 7, the hook-type reinforcing bar 3 is temporarily fixed by placing the hook-shaped reinforcing bar 3 along the beam 1 and driving the concrete rod 17a into the beam 1 to temporarily fix the hook-type reinforcing bar 3 to the beam 1. To do. The concrete rod 17a is driven by a concrete hammer or the like and hardly damages the beam 1.

FIG. 8 is a cross-sectional view showing a state in which the hook-shaped reinforcing bar 3 according to the present embodiment is temporarily fixed to the beam 1 using a rod-shaped concrete rod 17 b and a binding wire 19.
As shown in FIG. 8, the hook-shaped reinforcing bar 3 is temporarily fixed by driving a rod-shaped concrete rod 17b, which is a temporary fixing material, into the beam 1, and assembling the hook-shaped reinforcing bar 3 to the concrete rod 17b with a binding wire 19 to the beam 1. It is done by temporarily fixing to.

  According to the method for reinforcing a reinforced concrete structural member in the present embodiment described above, the hook-type reinforcing bar 3 is simply fastened to the beam 1 with the concrete rods 17a and 17b and the mortar 5 is sprayed. 1 can be reinforced. Moreover, since the hook-shaped reinforcing bar 3 is temporarily fixed to the beam 1 with the concrete rods 17a and 17b, the hook-shaped reinforcing bar 3 can be temporarily fixed easily in a short time.

Next, a fifth embodiment of the present invention will be described.
The reinforcing method of the reinforced concrete structural member in the fifth embodiment is to reinforce the beam 1 while repairing the deteriorated portion of the beam 1.
FIG. 9 is a cross-sectional view showing the reinforcing structure 52 of the beam 1 according to the fifth embodiment of the present invention.
As shown in FIG. 9, the reinforcing structure 52 of the beam 1 includes a hook-shaped reinforcing bar 3 disposed on both sides of the beam 1 and a mortar 5 sprayed on both sides of the beam 1 so as to cover the hook-shaped reinforcing bar 3. Composed.
The beam 1 includes an existing concrete 7, a repaired portion 21 that has been repaired by removing a deteriorated portion of the existing concrete and sprayed with mortar, and a plurality of main reinforcing bars 9 embedded along the longitudinal direction of the beam 1. And a plurality of rebars 11 embedded at predetermined intervals along the longitudinal direction of the beam 1.

Below, the reinforcement method of the beam 1 which concerns on this embodiment is demonstrated according to a construction procedure.
First, the deteriorated portion (lattice hatching portion in FIG. 9) of the lower end portion of the existing concrete 7 of the beam 1 is removed so as not to damage the rebar 11.
Next, the mortar 5 is sprayed and repaired on the part from which the concrete 7 has been removed to form the repaired portion 21.
Similar to the first embodiment, the hook-shaped reinforcing bars 3 are temporarily fixed to the outer peripheral surfaces on both sides of the beam 1, and the same as the mortar 5 sprayed when forming the repair portion 21 so as to cover the hook-shaped reinforcing bars 3. Spray with 5 mortar. In addition, in this embodiment, although the mortar 5 sprayed when forming the repair part 21 and the mortar 5 sprayed for reinforcement were used the same thing, it is not limited to this and is different You may use what consists of materials.

  According to the reinforcing method for a reinforced concrete structural member in the present embodiment described above, the deteriorated portion of the beam 1 is removed and the mortar 5 is sprayed to repair the deteriorated portion of the beam 1 and to reinforce the beam 1. Is possible.

Next, a sixth embodiment of the present invention will be described.
The reinforcing method of the reinforced concrete structural member in the sixth embodiment is to reinforce the beam 1 without changing the width of the beam 1.
FIG. 10A is a cross-sectional view showing the structure 61 of the beam 1 before reinforcement according to the sixth embodiment of the present invention, and FIG. 10B is a cross-section showing the reinforcement structure 62 after the beam 1 is reinforced. FIG.
As shown in FIG. 10B, the reinforcing structure 62 of the beam 1 includes the reinforcing material 3 disposed on both sides of the beam 1 and the beam 1 so as to cover the reinforcing material 3 as in the first embodiment. It is comprised from the spraying material 5 sprayed on both sides, and the width | variety of the beam 1 after reinforcement is made the same as that before reinforcement.

Below, the reinforcement method of the beam 1 which concerns on this embodiment is demonstrated according to a construction procedure.
First, both sides of the concrete 7 of the existing beam 1 (both side portions in FIG. 10A) are removed within a necessary range.
Next, as shown in FIG. 10 (b), the hook-shaped reinforcing bars 3 are temporarily fixed to the outer peripheral surfaces on both sides of the beam 1 exposed by removing the surface portion, as in the first to fifth embodiments. A spraying material 5 such as mortar is sprayed so as to cover the hook-shaped reinforcing bar 3. The spraying is performed so that the width of the beam 1 after spraying is the same as the width of the beam 1 before reinforcement.

  In the present embodiment, the method of reinforcing the beam 1 without changing the width of the beam 1 has been described. However, the present invention is not limited to this, and depending on the load condition acting on the beam 1, for example, The lower surface portion of the beam 1 is removed, the hook-shaped reinforcing bar 3 is attached, and the mortar 5 is sprayed so as to be the same as the height of the beam 1 before reinforcement, so that the beam 1 is changed without changing the height of the beam 1. A reinforcing method may be used.

  According to the reinforcing method of the reinforced concrete structural member in the present embodiment described above, the surface portion of the beam 1 is removed, the hook-shaped reinforcing bar 3 is attached, and the mortar 5 is sprayed so as to be equal to the width of the beam 1 before reinforcement. Thus, the beam 1 can be reinforced without changing the width of the beam 1.

  In the present embodiment, the method of making the width of the beam 1 before reinforcement equal to the width of the beam 1 after reinforcement has been described. However, the present invention is not limited to this, and the width of the beam 1 before reinforcement. And the width of the beam 1 after reinforcement may change.

  In all the embodiments described above, the method of reinforcing the beam 1 as a reinforced concrete structural member has been described. However, the method is not limited to this, and for example, a column may be used as long as it is a member made of reinforced concrete.

  In all of the above-described embodiments, the method using the hook-shaped reinforcing bar 3 having semicircular ends as the reinforcing member 3 has been described. However, the present invention is not limited to this, and for example, shown in FIGS. As described above, hook-type reinforcing bars each having an acute angle (FIG. 11) and right-angle (FIG. 12) shape, a fixing type reinforcing bar (FIG. 13) having mechanical fixing portions at both ends, and a circular closed type reinforcing bar (FIG. 14). Or a square closed rebar (Fig. 15), a ladder-type combined rebar (Fig. 16) in which the hook-shaped rebar 3 and the guide member 18 are assembled in a ladder shape by a binding wire 19 or welding, or a ladder shape by welding. Ladder-type reinforcing bars (Fig. 17) assembled into a bent type reinforcing bar having a substantially U-shaped (Fig. 18) and V-shaped (Fig. 19), and a semi-circular hook shape and a substantially U-shaped mixture. Type rebars (Fig. 20) may be used, Rui may combine these, loading conditions, appropriately selecting the reinforcing member according to the site conditions and the like.

  In all the embodiments described above, the method using a reinforcing bar as the reinforcing material 3 has been described. However, the method is not limited to this, and any method that satisfies the load condition based on the design may be used. Etc. may be used.

It is sectional drawing which shows the reinforcement structure of the beam which concerns on 1st embodiment of this invention. It is a side view which shows the reinforcement structure of the beam which concerns on 1st embodiment of this invention. It is a side view which shows the state which hook-fastened the reinforcing bar temporarily to the beam which concerns on this embodiment. FIG. 4 is a cross-sectional view taken along the line A-A ′ of FIG. 3. It is sectional drawing which shows the reinforcement structure of the beam which concerns on 3rd embodiment of this invention. It is a side view which shows the reinforcement structure of the beam which concerns on 3rd embodiment of this invention. It is sectional drawing which shows the state which temporarily fixed the hook-shaped reinforcing bar which concerns on 4th embodiment of this invention to the beam with the U-shaped concrete fence. It is sectional drawing which shows the state which temporarily fixed to the beam 1 the hook-shaped reinforcing bar which concerns on this embodiment using a rod-shaped concrete cage | basket and a binding wire. It is sectional drawing which shows the reinforcement structure of the beam which concerns on 5th embodiment of this invention. FIG. 10A is a cross-sectional view showing the structure of the beam before reinforcement according to the sixth embodiment of the present invention, and FIG. 10B is a cross-sectional view showing the reinforcement structure after reinforcing the beam. This shows another shape of the reinforcing bar, and is a hook-type reinforcing bar having both ends of an acute angle. It shows another shape of the reinforcing bar, and is a hook-type reinforcing bar having a right-angle shape at both ends. This shows another shape of the reinforcing bar, and is a fixing type reinforcing bar having mechanical fixing portions at both ends. It shows another shape of the reinforcing bar and is a circular closed type reinforcing bar. It shows another shape of the reinforcing bar and is a square closed type reinforcing bar. It shows another shape of the reinforcing bar, and is a ladder-type combined reinforcing bar in which a hook-shaped reinforcing bar and a guide member are assembled in a ladder shape by binding wires or welding. It shows another shape of the reinforcing bar, and is a ladder type reinforcing bar in which the reinforcing bars are assembled in a ladder shape by welding. This shows another shape of the reinforcing bar, and is a folding type reinforcing bar having a substantially U shape. It shows another shape of the reinforcing bar, and is a folding type reinforcing bar having a substantially V-shape. It shows another shape of the reinforcing bar, and is a mixed reinforcing bar having a semicircular hook shape and a substantially U-shaped shape. It is a figure which shows the reinforcement method of the conventional reinforced concrete structural member. It is a figure which shows the reinforcement method of the conventional reinforced concrete structural member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Beam 2 Reinforcement structure 3 Reinforcement material 5 Spraying material 7 Concrete 9 Main reinforcement 11 Band reinforcement 13 Adhesive material 17 Temporary fastening material 17a, 17b Concrete rod 18 Guide material 19 Bundling wire 21 Restoration part 32 Reinforcement structure 52 Reinforcement structure 61 Before reinforcement Beam structure 62 Reinforcement structure 100 Reinforced concrete structural member 101 Reinforcement 102 Form 103 Cement-based material 104 Sprayed mortar

Claims (7)

In the reinforcement method of existing reinforced concrete structural members,
Temporarily fastening a reinforcing material to the reinforced concrete structural member,
A method for reinforcing a reinforced concrete structural member, wherein a spraying material is sprayed so as to cover the reinforcing material. Removing the deteriorated part of the reinforced concrete structural member,
Repairing the reinforced concrete structure member from which the deteriorated part has been removed by spraying a spraying material,
The method for reinforcing a reinforced concrete structural member according to claim 1, wherein the reinforcing material is temporarily fixed to the portion repaired by spraying. In the reinforcement method of existing reinforced concrete structural members,
Removing the surface portion of the reinforced concrete structural member;
Temporarily fastening a reinforcing material to the reinforced concrete structural member from which the surface portion has been removed,
A method for reinforcing a reinforced concrete structural member, wherein a spraying material is sprayed so as to cover the reinforcing material.   The reinforcing method for a reinforced concrete structural member according to any one of claims 1 to 3, wherein the temporary fastening of the reinforcing material is performed by bonding the reinforcing material to the reinforced concrete structural member with an adhesive.   The method for reinforcing a reinforced concrete structural member according to any one of claims 1 to 3, wherein the temporary fastening of the reinforcing material is performed by bonding the reinforcing material to the reinforced concrete structural member with the spraying material.   The reinforcing method for a reinforced concrete structural member according to any one of claims 1 to 3, wherein the temporary fastening of the reinforcing material is performed by fixing the reinforcing material to the reinforced concrete structural member with a temporary fastening material such as a hook or a nail. It is a reinforcement structure of existing reinforced concrete structural members,
Temporarily fastening a reinforcing material to the reinforced concrete structural member,
A reinforcing structure for a reinforced concrete structural member, wherein a spraying material is sprayed so as to cover the reinforcing material.

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