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JP2017025514A - Reinforcing method of concrete structure - Google Patents

Reinforcing method of concrete structure Download PDF

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JP2017025514A
JP2017025514A JP2015143010A JP2015143010A JP2017025514A JP 2017025514 A JP2017025514 A JP 2017025514A JP 2015143010 A JP2015143010 A JP 2015143010A JP 2015143010 A JP2015143010 A JP 2015143010A JP 2017025514 A JP2017025514 A JP 2017025514A
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reinforcing
reinforcing bar
reinforcing bars
bar insertion
insertion hole
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JP6633311B2 (en
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平野　勝識
Katsunori Hirano
勝識 平野
笹谷　輝勝
Terumasa Sasatani
輝勝 笹谷
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Fujita Corp
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Abstract

【課題】一つの鉄筋挿入用孔に複数の鉄筋を挿入して既存のコンクリート構造体を補強する場合に、定着長を確保する上で有利なコンクリート構造体の補強工法を提供する。【解決手段】既に設けられた２列の鉄筋１６の両側に、それぞれ鉄筋挿入用孔１４を複数形成し、各鉄筋挿入用孔１４に複数の鉄筋１６を挿入する。鉄筋挿入用孔１４に挿入する複数の鉄筋１６は、同一の外径であり、同一の長さを有している。鉄筋挿入用孔１４に複数の鉄筋１６を挿入後、鉄筋挿入用孔１４に、コンクリートよりも引張強度の高いエポキシ樹脂系接着剤１８を充填し、硬化させる。液状樹脂に硬化剤を混合した硬化前のエポキシ樹脂系接着剤１８は流動性に優れるため、鉄筋挿入用孔１４に充填されると、複数の鉄筋１６の隙間および周囲にわたって充填され、硬化することで鉄筋挿入用孔１４の内周面と複数の鉄筋１６とが一体化される。【選択図】図１PROBLEM TO BE SOLVED: To provide a method for reinforcing a concrete structure which is advantageous for securing a fixing length when a plurality of reinforcing bars are inserted into one hole for inserting a reinforcing bar to reinforce an existing concrete structure. SOLUTION: A plurality of reinforcing bar insertion holes 14 are formed on both sides of two rows of reinforcing bars 16 already provided, and a plurality of reinforcing bars 16 are inserted into each reinforcing bar insertion hole 14. The plurality of reinforcing bars 16 to be inserted into the reinforcing bar insertion holes 14 have the same outer diameter and the same length. After inserting the plurality of reinforcing bars 16 into the reinforcing bar inserting holes 14, the reinforcing bar inserting holes 14 are filled with an epoxy resin adhesive 18 having a tensile strength higher than that of concrete and cured. Since the epoxy resin adhesive 18 before curing, which is a mixture of a liquid resin and a curing agent, has excellent fluidity, when it is filled in the reinforcing bar insertion holes 14, it is filled and cured over the gaps and surroundings of the plurality of reinforcing bars 16. The inner peripheral surface of the reinforcing bar insertion hole 14 and the plurality of reinforcing bars 16 are integrated. [Selection diagram] Fig. 1

Description

本発明は、一つの鉄筋挿入用孔に複数の鉄筋を挿入してコンクリート構造体を補強する工法に関する。   The present invention relates to a method for reinforcing a concrete structure by inserting a plurality of reinforcing bars into one reinforcing bar insertion hole.

鉄筋を用いて既存のコンクリート構造体、例えば、コンクリート製の柱、壁、杭などを補強する場合、設計時に、鉄筋の外径と、鉄筋挿入箇所の個数が決定される。
この場合、設計された鉄筋の外径が大きい場合、その都度、大きい外径の鉄筋を手配するのでは、工期の短縮化を図り、また、コストの削減化を図る上で不利となる。
そこで、予め均一の外径の鉄筋を多数用意しておき、それら鉄筋を束ねた束ね鉄筋として使用できれば、大きい外径の鉄筋をその都度手配する必要がなくなる。
特許文献１には、複数本の鉄筋が、スパイラル鉄筋で巻回されて構成された束ね鉄筋が提案されている。 When reinforcing an existing concrete structure such as a concrete column, wall, or pile using a reinforcing bar, the outer diameter of the reinforcing bar and the number of reinforcing bar insertion points are determined at the time of design.
In this case, when the outer diameter of the designed reinforcing bar is large, arranging a reinforcing bar having a large outer diameter each time is disadvantageous in terms of shortening the construction period and reducing the cost.
Therefore, if a large number of reinforcing bars having a uniform outer diameter are prepared in advance and can be used as a bundled reinforcing bar obtained by bundling the reinforcing bars, it is not necessary to arrange a reinforcing bar having a large outer diameter each time.
Patent Document 1 proposes a bundled reinforcing bar in which a plurality of reinforcing bars are wound around a spiral reinforcing bar.

特開平７−１５０６３０号公報Japanese Patent Laid-Open No. 7-150630

しかしながらこのような束ね鉄筋は、複数本の鉄筋が、スパイラル鉄筋で締め付けられ、鉄筋相互の外周面が接触しているため、複数本の鉄筋の内側にコンクリートが行き渡り難い。したがって、設計された鉄筋の外径が大きく、用いる鉄筋の数が４本、５本、６本と増えるにつれ、各鉄筋の相互の隙間にコンクリートが行き渡り難いことから、定着長を確保する上で不利となる。
本発明は、上記のような課題を解決するためになされたもので、本発明は、一つの鉄筋挿入用孔に複数の鉄筋を挿入して既存のコンクリート構造体を補強する場合に、定着長を確保する上で有利なコンクリート構造体の補強工法を提供することを目的とする。 However, in such bundled reinforcing bars, a plurality of reinforcing bars are tightened by spiral reinforcing bars and the outer peripheral surfaces of the reinforcing bars are in contact with each other, so that it is difficult for the concrete to spread inside the plurality of reinforcing bars. Therefore, as the outer diameter of the designed reinforcing bars is large and the number of reinforcing bars to be used increases to 4, 5, and 6, the concrete is difficult to spread through the gaps between the reinforcing bars. Disadvantageous.
The present invention has been made in order to solve the above-described problems. The present invention provides a fixing length when a plurality of reinforcing bars are inserted into one reinforcing bar insertion hole to reinforce an existing concrete structure. An object of the present invention is to provide a method for reinforcing a concrete structure which is advantageous in securing the above.

上記目的を達成するために、請求項１記載の発明は、コンクリート構造体の補強工法であって、前記コンクリート構造体に鉄筋挿入用孔を形成し、前記鉄筋挿入用孔に複数本の鉄筋を挿入し、前記鉄筋挿入用孔にコンクリートよりも大きい引張強度を有する接着剤を充填し硬化させるようにしたことを特徴とする。
請求項２記載の発明は、前記複数の鉄筋は同一の外径を有していることを特徴とする。
請求項３記載の発明は、前記複数の鉄筋を、前記鉄筋挿入用孔内でそれらの外周面を離間させて配置することを特徴とする。
請求項４記載の発明は、前記鉄筋挿入用孔に鋼管を挿入し、前記鉄筋挿入用孔への前記複数本の鉄筋の挿入は、前記複数本の鉄筋を前記鋼管に挿入することで行ない、前記接着剤は、前記鋼管の内側と外側の双方に充填することを特徴とする。
請求項５記載の発明は、前記鋼管には、その外周面と内周面とを貫通する複数の孔が形成されていることを特徴とする。
請求項６記載の発明は、前記コンクリートよりも大きい引張強度を有する接着剤は、エポキシ樹脂系接着剤であることを特徴とする。 In order to achieve the above object, the invention according to claim 1 is a method for reinforcing a concrete structure, wherein a reinforcing bar insertion hole is formed in the concrete structure, and a plurality of reinforcing bars are provided in the reinforcing bar insertion hole. It is inserted and filled with an adhesive having a tensile strength larger than that of concrete in the reinforcing bar insertion hole and cured.
The invention according to claim 2 is characterized in that the plurality of reinforcing bars have the same outer diameter.
The invention according to claim 3 is characterized in that the plurality of reinforcing bars are arranged in the reinforcing bar insertion hole with their outer peripheral surfaces spaced apart from each other.
The invention according to claim 4 inserts a steel pipe into the reinforcing bar insertion hole, and inserts the plurality of reinforcing bars into the reinforcing bar insertion hole by inserting the plurality of reinforcing bars into the steel pipe. The adhesive is filled both inside and outside the steel pipe.
The invention according to claim 5 is characterized in that a plurality of holes penetrating the outer peripheral surface and the inner peripheral surface are formed in the steel pipe.
The invention described in claim 6 is characterized in that the adhesive having a higher tensile strength than the concrete is an epoxy resin adhesive.

請求項１記載の発明によれば、同一外径の多数の鉄筋を用意しておけば、既存のコンクリート構造体を補強する際、設計された鉄筋の外径が大きい場合、その都度、大きい外径の鉄筋を手配する必要がなくなり、工期の短縮化を図り、また、コストの削減化を図る上で有利となる。
請求項２記載の発明によれば、既存のコンクリート構造体を補強する際、工期の短縮化を図り、また、コストの削減化を図る上で有利となる。
請求項３記載の発明によれば、定着性を確保する上で有利となる。
請求項４記載の発明によれば、鋼管を用いて複数の鉄筋を位置決めする上で有利となり、また、コンクリート構造体の補強強度を高める上で有利となる。
請求項５記載の発明によれば、鋼管と複数の鉄筋の定着性を確保する上で有利となる。
請求項６記載の発明によれば、市販品を用いて既存のコンクリート構造体を補強でき、工期の短縮化を図り、また、コストの削減化を図る上で有利となる。 According to the first aspect of the present invention, if a large number of reinforcing bars having the same outer diameter are prepared, when reinforcing the existing concrete structure, if the outer diameter of the designed reinforcing bar is large, the outer There is no need to arrange reinforcing bars with a diameter, which is advantageous for shortening the construction period and reducing costs.
According to the invention described in claim 2, when reinforcing an existing concrete structure, it is advantageous for shortening the construction period and reducing the cost.
According to the third aspect of the invention, it is advantageous in securing the fixing property.
According to the invention described in claim 4, it is advantageous in positioning a plurality of reinforcing bars using a steel pipe, and is advantageous in increasing the reinforcing strength of the concrete structure.
According to the invention described in claim 5, it is advantageous in securing the fixing property of the steel pipe and the plurality of reinforcing bars.
According to the sixth aspect of the present invention, it is possible to reinforce an existing concrete structure using a commercially available product, which is advantageous in shortening the construction period and reducing costs.

（Ａ）〜（Ｄ）は第１の実施の形態の補強工法の説明図である。(A)-(D) are explanatory drawings of the reinforcement construction method of 1st Embodiment. 第２の実施の形態の補強工法の説明図で、鉄筋挿入用孔に挿入された鋼管および複数の鉄筋と、充填されたエポキシ樹脂系接着剤の平面図である。It is explanatory drawing of the reinforcement construction method of 2nd Embodiment, and is a top view of the steel pipe inserted into the reinforcing-bar insertion hole, a plurality of reinforcing bars, and the filled epoxy resin adhesive. 第３の実施の形態の補強工法の説明図で、鉄筋挿入用孔に挿入された鋼管および複数の鉄筋と、充填されたエポキシ樹脂系接着剤の平面図である。It is explanatory drawing of the reinforcement construction method of 3rd Embodiment, and is a top view of the steel pipe inserted in the reinforcing-bar insertion hole, several reinforcing bars, and the filled epoxy resin adhesive.

次に、本発明の実施の形態について図面を参照して説明する。
（第１の実施の形態）
図１に示すように、補強すべきコンクリート構造体は、例えば、コンクリート製の壁１０である。
図１（Ａ）に示すように、コンクリート製の壁１０には既に複数の鉄筋１２が２列で設けられている。
本実施の形態では、２列の鉄筋１６１２の両側に、それぞれ鉄筋挿入用孔１４を複数形成し、図１（Ｂ）、（Ｃ）に示すように、各鉄筋挿入用孔１４に複数の鉄筋１６を挿入することでコンクリート製の壁１０を補強する。
各鉄筋挿入用孔１４に挿入する複数の鉄筋１６は、同一の外径であり、同一の長さを有している。
鉄筋挿入用孔１４に複数の鉄筋１６を挿入後、図１（Ｃ）に示すように、鉄筋挿入用孔１４に、コンクリートよりも引張強度の高い接着剤を充填し、硬化させる。
このような接着剤として、例えば、市販品のエポキシ樹脂系接着剤１８を用いることができる。エポキシ樹脂系接着剤１８は、液状樹脂に硬化剤を混合し、硬化させて用いるものである。
液状樹脂に硬化剤を混合した硬化前のエポキシ樹脂系接着剤１８は流動性に優れるため、鉄筋挿入用孔１４に充填されると、複数の鉄筋１６の隙間および周囲にわたって充填され、硬化することで鉄筋挿入用孔１４の内周面と複数の鉄筋１６とが一体化される。 Next, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the concrete structure to be reinforced is, for example, a concrete wall 10.
As shown in FIG. 1A, a concrete wall 10 is already provided with a plurality of reinforcing bars 12 in two rows.
In the present embodiment, a plurality of reinforcing bar insertion holes 14 are formed on both sides of two rows of reinforcing bars 1612, and a plurality of reinforcing bars are inserted in each reinforcing bar insertion hole 14, as shown in FIGS. The concrete wall 10 is reinforced by inserting 16.
The plurality of reinforcing bars 16 inserted into the reinforcing bar insertion holes 14 have the same outer diameter and the same length.
After inserting a plurality of reinforcing bars 16 into the reinforcing bar insertion hole 14, as shown in FIG. 1C, the reinforcing bar insertion hole 14 is filled with an adhesive having a higher tensile strength than concrete, and is cured.
As such an adhesive, for example, a commercially available epoxy resin adhesive 18 can be used. The epoxy resin adhesive 18 is used by mixing a liquid resin with a curing agent and curing it.
The epoxy resin adhesive 18 before curing, in which a curing agent is mixed with a liquid resin, is excellent in fluidity. Therefore, when the reinforcing bar insertion hole 14 is filled, it is filled and cured across the gaps and the periphery of the plurality of reinforcing bars 16. Thus, the inner peripheral surface of the reinforcing bar insertion hole 14 and the plurality of reinforcing bars 16 are integrated.

本実施の形態では、複数の鉄筋１６は、鉄筋挿入用孔１４内においてそれらの外周面の相互が離間して配置され、各鉄筋１６の外周面の全域にエポキシ樹脂系接着剤１８が位置しており、複数の鉄筋１６と鉄筋挿入用孔１４の内周面との一体化がより強固になされる。
なお、本発明では鉄筋挿入用孔１４内において複数の鉄筋１６の外周面相互を接触させて配置してもよい。複数の鉄筋１６の外周面相互が接触している場合であっても、硬化剤を混合した液状のエポキシ樹脂系接着剤１８は流動性に優れるため、複数の鉄筋１６相互の隙間に確実に充填され一体化される。しかしながら、複数の鉄筋１６の外周面の相互を離間して配置した方が、複数の鉄筋１６と鉄筋挿入用孔１４の内周面とを一体化する上で有利となり、定着長を確保する上で有利となる。
なお、鉄筋１６としてねじ節鉄筋１６を用いると、複数の鉄筋１６と鉄筋挿入用孔１４の内周面とを一体化する上で有利となり、定着長を確保する上で有利となる。 In the present embodiment, the plurality of reinforcing bars 16 are arranged in the reinforcing bar insertion hole 14 such that their outer peripheral surfaces are spaced apart from each other, and the epoxy resin adhesive 18 is located over the entire outer peripheral surface of each reinforcing bar 16. Thus, the integration of the plurality of reinforcing bars 16 and the inner peripheral surface of the reinforcing bar insertion hole 14 is made stronger.
In the present invention, the outer peripheral surfaces of the plurality of reinforcing bars 16 may be arranged in contact with each other in the reinforcing bar insertion hole 14. Even when the outer peripheral surfaces of the plurality of reinforcing bars 16 are in contact with each other, the liquid epoxy resin adhesive 18 mixed with a curing agent is excellent in fluidity, so that the gaps between the plurality of reinforcing bars 16 are reliably filled. And integrated. However, arranging the outer peripheral surfaces of the plurality of reinforcing bars 16 apart from each other is advantageous in integrating the plurality of reinforcing bars 16 and the inner peripheral surface of the reinforcing bar insertion hole 14, and securing the fixing length. Is advantageous.
It should be noted that the use of the threaded reinforcing bar 16 as the reinforcing bar 16 is advantageous in integrating the plurality of reinforcing bars 16 and the inner peripheral surface of the reinforcing bar insertion hole 14 and is advantageous in securing the fixing length.

鉄筋挿入用孔１４内において複数の鉄筋１６をそれらの外周面の相互を離間して配置するには、例えば、鉄筋１６の外径に対応した大きさの網目を有し鉄筋挿入用孔１４に挿入可能な外径の金網を用意する。
そして、複数の鉄筋１６の長手方向両端に金網をそれぞれ配置し、それら鉄筋１６の両端を一対の金網の網目に挿入し、複数の鉄筋１６を、それらの外周面の相互を離間させた状態に位置関係を定め一体化させておく。
そして、一対の金網により位置関係が定められ一体化された複数の鉄筋１６を鉄筋挿入用孔１４に挿入する。
これにより鉄筋挿入用孔１４内において複数の鉄筋１６がそれらの外周面の相互を離間して配置される。 In order to dispose the plurality of reinforcing bars 16 in the reinforcing bar insertion hole 14 so that their outer peripheral surfaces are spaced apart from each other, for example, the reinforcing bar 16 has a mesh having a size corresponding to the outer diameter of the reinforcing bar 16. Prepare a wire mesh with an outer diameter that can be inserted.
Then, wire meshes are arranged at both longitudinal ends of the plurality of reinforcing bars 16, both ends of the reinforcing bars 16 are inserted into a pair of wire meshes, and the plurality of reinforcing bars 16 are in a state in which their outer peripheral surfaces are separated from each other. The positional relationship is determined and integrated.
Then, a plurality of reinforcing bars 16 whose positional relationship is determined and integrated by a pair of wire meshes are inserted into the reinforcing bar insertion holes 14.
As a result, a plurality of reinforcing bars 16 are arranged in the reinforcing bar insertion hole 14 with their outer peripheral surfaces spaced apart from each other.

本実施の形態のコンクリート構造体の補強工法によれば、エポキシ樹脂系接着剤１８が複数の鉄筋１６の隙間からそれら鉄筋１６の外周にわたって充填され、鉄筋挿入用孔１４の内周面と一体化される。
したがって、太い一本の鉄筋と同様の補強効果を得る上で有利となる。
また、複数の鉄筋１６相互は、エポキシ樹脂系接着剤１８により一体化されているので、複数の鉄筋１６に設計通りの定着長を確保する上で有利となる。
また、エポキシ樹脂系接着剤１８は、コンクリートよりも引張強度が高いため、複数の鉄筋１６の定着長を確保する上で有利となる。
また、複数の鉄筋１６は同一の外径を有しているので、補強強度の計算を簡単に行なえ、コンクリート製の壁１０を簡単に補強する上で有利となる。 According to the method for reinforcing a concrete structure of the present embodiment, the epoxy resin adhesive 18 is filled from the gap between the plurality of reinforcing bars 16 to the outer periphery of the reinforcing bars 16 and integrated with the inner peripheral surface of the reinforcing bar insertion hole 14. Is done.
Therefore, it is advantageous in obtaining the same reinforcing effect as that of a single thick reinforcing bar.
Further, since the plurality of reinforcing bars 16 are integrated with each other by the epoxy resin adhesive 18, it is advantageous in securing a fixing length as designed in the plurality of reinforcing bars 16.
Further, since the epoxy resin adhesive 18 has a higher tensile strength than concrete, it is advantageous in securing the fixing length of the plurality of reinforcing bars 16.
Further, since the plurality of reinforcing bars 16 have the same outer diameter, the reinforcement strength can be easily calculated, which is advantageous for easily reinforcing the concrete wall 10.

したがって、同一外径の多数の鉄筋１６を用意しておけば、既存のコンクリート製の壁１０を補強する際、設計された鉄筋の外径が大きい場合、その都度、大きい外径の鉄筋を手配する必要がなくなり、工期の短縮化を図り、また、コストの削減化を図る上で有利となる。   Therefore, if a large number of reinforcing bars 16 having the same outer diameter are prepared, when reinforcing the existing concrete wall 10, if the outer diameter of the designed reinforcing bar is large, arrange a reinforcing bar with a larger outer diameter each time. This is advantageous in terms of shortening the construction period and reducing costs.

（第２の実施の形態）
図２に示すように、第２の実施の形態は、鉄筋挿入用孔１４に鋼管２０を挿入し、鉄筋挿入用孔１４への複数本の鉄筋１６の挿入を、複数本の鉄筋１６を鋼管２０に挿入することで行ない、エポキシ樹脂系接着剤１８を、鋼管２０の内側と外側の双方に充填するようにしたものである。
鉄筋挿入用孔１４の内周面と複数の鉄筋１６とは、エポキシ樹脂系接着剤１８および鋼管２０を介して一体化される。
第２の実施の形態によれば、第１の実施の形態と同様に、既存のコンクリート構造体を補強する際、設計された鉄筋の外径が大きい場合、その都度、大きい外径の鉄筋を手配する必要がなくなり、工期の短縮化を図り、また、コストの削減化を図る上で有利となる。
また、鉄筋挿入用孔１４内において、鋼管２０を用いて複数の鉄筋１６を位置決めする上で有利となり、また、コンクリート製の壁１０を、複数の鉄筋１６と鋼管２０との双方により補強できるので、コンクリート製の壁１０の補強強度を高める上で有利となる。 (Second Embodiment)
As shown in FIG. 2, in the second embodiment, a steel pipe 20 is inserted into the reinforcing bar insertion hole 14, and a plurality of reinforcing bars 16 are inserted into the reinforcing bar insertion hole 14. The epoxy resin adhesive 18 is filled into both the inside and the outside of the steel pipe 20 by being inserted into the pipe 20.
The inner peripheral surface of the reinforcing bar insertion hole 14 and the plurality of reinforcing bars 16 are integrated via an epoxy resin adhesive 18 and a steel pipe 20.
According to the second embodiment, as in the first embodiment, when reinforcing the existing concrete structure, if the designed outer diameter of the reinforcing bar is large, the reinforcing bar with a larger outer diameter is used each time. There is no need to make arrangements, which is advantageous in shortening the construction period and reducing costs.
Further, it is advantageous in positioning the plurality of reinforcing bars 16 using the steel pipes 20 in the reinforcing bar insertion holes 14, and the concrete wall 10 can be reinforced by both the plurality of reinforcing bars 16 and the steel pipes 20. This is advantageous in increasing the reinforcing strength of the concrete wall 10.

（第３の実施の形態）
図３に示すように、第３の実施の形態は、第２の実施の形態で用いた鋼管２０に、その外周面と内周面とに貫通する孔２００２を鋼管２０の周方向および長手方向に間隔をおいて複数形成したものである。
第３の実施の形態によれば、第２の実施の形態と同様な効果が奏されることは無論のこと、複数の孔２００２により鉄筋挿入用孔１４の内周面と鋼管２０との付着性が高まり、複数の鉄筋１６および鋼管２０の定着性を確保する上で有利となる。 (Third embodiment)
As shown in FIG. 3, in the third embodiment, the steel pipe 20 used in the second embodiment is provided with holes 2002 penetrating the outer peripheral surface and the inner peripheral surface thereof in the circumferential direction and the longitudinal direction of the steel pipe 20. A plurality of them are formed at intervals.
According to the third embodiment, it is needless to say that the same effect as in the second embodiment is achieved, and the adhesion between the inner peripheral surface of the reinforcing bar insertion hole 14 and the steel pipe 20 by the plurality of holes 2002. This is advantageous in securing the fixing property of the plurality of reinforcing bars 16 and the steel pipe 20.

なお、実施の形態では、鉄筋挿入用孔１４に挿入する複数の鉄筋１６の外径が同一である場合について説明したが、複数種類の外径の鉄筋１６を多数用意した場合、鉄筋挿入用孔１４に、複数の外径の鉄筋１６を組み合わせて挿入するなど任意である。   In the embodiment, the case where the outer diameters of the plurality of reinforcing bars 16 inserted into the reinforcing bar insertion holes 14 are the same has been described. However, when a large number of reinforcing bars 16 having a plurality of types of outer diameters are prepared, the reinforcing bar insertion holes are provided. 14, a plurality of outer diameter reinforcing bars 16 are combined and inserted.

１０ コンクリート製の壁
１４ 鉄筋挿入用孔
１６ 鉄筋
１８ エポキシ樹脂系接着剤
２０ 鋼管
２００２ 孔 DESCRIPTION OF SYMBOLS 10 Concrete wall 14 Reinforcing bar insertion hole 16 Reinforcing bar 18 Epoxy resin adhesive 20 Steel pipe 2002 Hole

Claims (6)

コンクリート構造体の補強工法であって、
前記コンクリート構造体に鉄筋挿入用孔を形成し、
前記鉄筋挿入用孔に複数本の鉄筋を挿入し、
前記鉄筋挿入用孔にコンクリートよりも大きい引張強度を有する接着剤を充填し硬化させるようにした、
ことを特徴とするコンクリート構造体の補強工法。 A method for reinforcing a concrete structure,
Reinforcing bar insertion holes are formed in the concrete structure,
Insert a plurality of reinforcing bars into the reinforcing bar insertion hole,
The reinforcing bar insertion hole was filled with an adhesive having a tensile strength greater than that of concrete and cured.
Reinforcement method for concrete structures. 前記複数の鉄筋は同一の外径を有している、
ことを特徴とする請求項１記載のコンクリート構造体の補強工法。 The plurality of reinforcing bars have the same outer diameter,
The method for reinforcing a concrete structure according to claim 1, wherein: 前記複数の鉄筋を、前記鉄筋挿入用孔内でそれらの外周面を離間させて配置する、
ことを特徴とする請求項１または２記載のコンクリート構造体の補強工法。 The plurality of reinforcing bars are arranged with their outer peripheral surfaces spaced apart in the reinforcing bar insertion hole,
The method for reinforcing a concrete structure according to claim 1 or 2, characterized in that 前記鉄筋挿入用孔に鋼管を挿入し、
前記鉄筋挿入用孔への前記複数本の鉄筋の挿入は、前記複数本の鉄筋を前記鋼管に挿入することで行ない、
前記接着剤は、前記鋼管の内側と外側の双方に充填する、
ことを特徴とする請求項１〜３の何れか１項記載のコンクリート構造体の補強工法。 Insert a steel pipe into the rebar insertion hole,
Inserting the plurality of reinforcing bars into the reinforcing bar insertion hole is performed by inserting the plurality of reinforcing bars into the steel pipe,
The adhesive fills both the inside and the outside of the steel pipe.
The method for reinforcing a concrete structure according to any one of claims 1 to 3, wherein: 前記鋼管には、その外周面と内周面とを貫通する複数の孔が形成されている、
ことを特徴とする請求項４記載のコンクリート構造体の補強工法。 In the steel pipe, a plurality of holes penetrating the outer peripheral surface and the inner peripheral surface are formed,
The method for reinforcing a concrete structure according to claim 4, wherein: 前記コンクリートよりも大きい引張強度を有する接着剤は、エポキシ樹脂系接着剤である、
ことを特徴とする請求項１〜５の何れか１項記載のコンクリート構造体の補強工法。 The adhesive having a greater tensile strength than the concrete is an epoxy resin adhesive,
The method for reinforcing a concrete structure according to any one of claims 1 to 5, wherein:
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212181A (en) * 1987-11-12 1989-07-19 David Patrick Payne Cavity wall tie of rod and binder
JPH0978576A (en) * 1995-09-14 1997-03-25 Kensetsu Kiso Eng Co Ltd High-strength structure
US20050097849A1 (en) * 2003-11-12 2005-05-12 Hayes John T. Masonry wall anchoring device, system, and anchoring method
KR101303666B1 (en) * 2012-08-22 2013-09-24 이현남 The earthquake-proof reinforcement structure of building
JP2015021299A (en) * 2013-07-19 2015-02-02 株式会社フジタ Internal reinforcement type reinforcement method for concrete structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212181A (en) * 1987-11-12 1989-07-19 David Patrick Payne Cavity wall tie of rod and binder
JPH0978576A (en) * 1995-09-14 1997-03-25 Kensetsu Kiso Eng Co Ltd High-strength structure
US20050097849A1 (en) * 2003-11-12 2005-05-12 Hayes John T. Masonry wall anchoring device, system, and anchoring method
KR101303666B1 (en) * 2012-08-22 2013-09-24 이현남 The earthquake-proof reinforcement structure of building
JP2015021299A (en) * 2013-07-19 2015-02-02 株式会社フジタ Internal reinforcement type reinforcement method for concrete structure

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