JP2009138478A - Rc column reinforcing method - Google Patents

Rc column reinforcing method Download PDF

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Publication number
JP2009138478A
JP2009138478A JP2007317843A JP2007317843A JP2009138478A JP 2009138478 A JP2009138478 A JP 2009138478A JP 2007317843 A JP2007317843 A JP 2007317843A JP 2007317843 A JP2007317843 A JP 2007317843A JP 2009138478 A JP2009138478 A JP 2009138478A
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corner
panel
column
reinforcing
members
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Shinichi Omaki
慎一 大巻
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Daichi Koei Kk
ダイチ工営株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing method for easily reinforcing an existing RC (reinforced concrete) column. <P>SOLUTION: The reinforcing method comprises steps of covering the periphery of the RC column with a panel structure 10 having a cross section slightly larger than the cross section of the RC column, and filling a shrinkage-compensating mortar in a clearance between the RC column and the panel structure. The panel structure has four corner members 12 and four plate members 14 connecting the adjacent corner members. The corner member is formed by providing the inner surface of each side of an equilateral angle steel with a recessed part or a projecting part, and the plate member is formed by providing the outer surface of a steel plate of predetermined thickness with a projecting part or a recessed part coinciding with the recessed part or projecting part of the corner member. The projecting part or recessed part of the plate member is placed to coincide with the recessed part or projecting part of the corner member and fixed to each other by a fastening member 16 to assemble the panel structure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、既設の鉄筋コンクリート柱(以下「RC柱」という)を補強するための方法に関する。   The present invention relates to a method for reinforcing an existing reinforced concrete column (hereinafter referred to as “RC column”).
RC構造物を建設した後、種々の理由(例えば、剪断耐力や塑性変形能力の向上、耐震基準の改定など)により、既設の構造部材の補強をする必要が生ずる場合がある。従来の代表的な補強方法としては、RC柱の外周を複数の鋼板で囲み、鋼板を現場溶接で固定するやり方が知られている。   After the RC structure is constructed, it may be necessary to reinforce existing structural members for various reasons (for example, improvement in shear strength or plastic deformation capacity, revision of earthquake resistance standards, etc.). As a conventional representative reinforcing method, a method of surrounding the outer periphery of the RC column with a plurality of steel plates and fixing the steel plates by field welding is known.
しかしながら、既設のRC柱を囲む鋼板を現場溶接する際には、横向きで溶接しなければならず、良好な溶接強度を確保することが容易ではないという課題がある。また、水中に位置するRC柱を補強する際には、水中溶接をしなければならず、溶接強度を確保するのが困難であるという課題がある。このように、既設のRC柱を簡単かつ容易に補強するのに、満足すべき方法がないのが現状である。   However, when the steel plates surrounding the existing RC columns are welded in the field, they must be welded sideways, and there is a problem that it is not easy to ensure good welding strength. Moreover, when reinforcing the RC pillar located in water, underwater welding must be performed, and there is a problem that it is difficult to ensure welding strength. Thus, there is currently no satisfactory method for easily and easily reinforcing existing RC columns.
本発明は、このような状況に鑑みて開発されたものであって、既設のRC柱を簡単かつ容易に補強することができる補強方法を提供することを目的としている。   The present invention has been developed in view of such a situation, and an object thereof is to provide a reinforcing method capable of easily and easily reinforcing an existing RC column.
本願請求項1に記載のRC柱の補強方法は、補強しようとするRC柱の横断面よりも僅かに大きな横断面をもつパネル構造体で前記RC柱の周囲を被覆する段階と、RC柱とパネル構造体との間の隙間に無収縮モルタルを充填する段階とを含み、前記パネル構造体が、4個の隅角部材と、隣接する隅角部材を連結する4個の平板部材とを有し、前記隅角部材が、等辺山形鋼の各辺の内面に凹部又は凸部を設けることによって形成され、前記平板部材が、所定厚の鋼板の外面に、前記隅角部材の凹部又は凸部に合致する凸部又は凹部を設けることによって形成されており、隅角部材の前記凹部又は凸部に平板部材の前記凸部又は凹部を合致させ、締結部材で互いに固定することによって、パネル構造体を組み立てるように構成されていることを特徴とするものである。   The RC column reinforcing method according to claim 1 of the present invention includes a step of covering the periphery of the RC column with a panel structure having a slightly larger cross section than that of the RC column to be reinforced, Filling the gap between the panel structure with non-shrink mortar, and the panel structure has four corner members and four flat plate members connecting adjacent corner members. The corner member is formed by providing a concave portion or a convex portion on the inner surface of each side of the equilateral angle steel, and the flat plate member is formed on the outer surface of the steel plate having a predetermined thickness on the concave portion or the convex portion of the corner member. The panel structure is formed by providing a convex portion or a concave portion that conforms to the corner member, and aligning the convex portion or the concave portion of the flat plate member with the concave portion or the convex portion of the corner member, and fixing them with a fastening member. That is configured to assemble We are an butterfly.
本発明によれば、現場溶接を必要とせずに、既設のRC柱を簡単かつ容易に補強することができる。本発明の方法で使用される隅角部材がRC柱の端部付近で平板部材と連結されるように構成されているため、比較的小さい形状に形作られており、これにより保管スペースや搬送スペースの小型化を可能にし、かつ、軽量で取り扱いも容易にすることができる。   According to the present invention, an existing RC column can be easily and easily reinforced without requiring field welding. Since the corner member used in the method of the present invention is configured to be connected to the flat plate member in the vicinity of the end of the RC pillar, the corner member is formed in a relatively small shape. Can be reduced in size, and can be light and easy to handle.
次に図面を参照して、本発明の好ましい実施の形態に係るRC柱の補強方法について詳細に説明する。本発明の好ましい実施の形態に係るRC柱の補強方法においては、既設RC柱を被覆するパネル構造体10が使用される。パネル構造体10は、4個の隅角部材12と、隣接する隅角部材12を連結する4個の平板部材14とを有している。   Next, a RC column reinforcing method according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. In the RC column reinforcing method according to the preferred embodiment of the present invention, the panel structure 10 that covers the existing RC column is used. The panel structure 10 includes four corner members 12 and four flat plate members 14 that connect adjacent corner members 12.
隅角部材12は、等辺山形鋼の各辺の内面に凹部12aを設けることによって形成されている(図4参照)。凹部12aは、例えば座ぐり加工によって形成される。隅角部材12には、各辺にボルト(締結部材)用の開口部12bも設けられている。   The corner member 12 is formed by providing a recess 12a on the inner surface of each side of the equilateral angle steel (see FIG. 4). The recess 12a is formed, for example, by spot facing. The corner member 12 is also provided with an opening 12b for a bolt (fastening member) on each side.
平板部材14は、所定厚の鋼板の外面に、隅角部材12の凹部12aに合致する凸部14aを設けることによって形成されている。或いは、平板部材14は、図5に示されるように、両端にリブが設けられた鋼板に凸部14aを設けることによって形成してもよい。凸部14aは、例えばプレートを鋼板の所定箇所に溶接することによって形成される。平板部材14には、隅角部材12と組み合わせたときに隅角部材12の開口部12bに対応する箇所に、ボルト(締結部材)用の開口部14bが設けられている。   The flat plate member 14 is formed by providing a convex portion 14a that matches the concave portion 12a of the corner member 12 on the outer surface of a steel plate having a predetermined thickness. Or you may form the flat member 14 by providing the convex part 14a in the steel plate by which the rib was provided in both ends, as FIG. 5 shows. The convex part 14a is formed by welding a plate to the predetermined location of a steel plate, for example. The flat plate member 14 is provided with an opening 14b for a bolt (fastening member) at a location corresponding to the opening 12b of the corner member 12 when combined with the corner member 12.
上述のような隅角部材12と平板部材14を組み合わせることによって、既設RC柱の横断面よりも僅かに大きなパネル構造体10を形成する。組み合わせ法としては、1個の隅角部材12に2個の平板部材14を組み合わせてL形にした部材を2個準備し、2個のL形部材を既設RC柱の周囲に配して締結部材(ボルト)16で連結してもよいし、或いは、1個の平板部材14の両端に隅角部材12を組み合わせた部材を2個準備し、当該部材を既設RC柱の対向面に配して締結部材(ボルト)16で平板部材14と連結するようにしてもよい。或いは、他の所望のやり方で、既設RC柱の周囲にパネル構造体10を配してもよい。   By combining the corner member 12 and the flat plate member 14 as described above, the panel structure 10 slightly larger than the cross section of the existing RC column is formed. As a combination method, two L-shaped members are prepared by combining two flat plate members 14 with one corner member 12, and two L-shaped members are arranged around an existing RC column and fastened. You may connect with the member (bolt) 16, or prepare the two members which combined the corner member 12 at the both ends of one flat plate member 14, and distribute the said member on the opposing surface of the existing RC pillar The plate member 14 may be connected by a fastening member (bolt) 16. Alternatively, the panel structure 10 may be arranged around the existing RC pillar in another desired manner.
上述のようにして、既設RC柱の高さ方向(垂直方向)に沿ってパネル構造体10を順次組み立てる(図3参照)。   As described above, the panel structures 10 are sequentially assembled along the height direction (vertical direction) of the existing RC pillar (see FIG. 3).
しかる後、既設RC柱とパネル構造体10との間の隙間に、無収縮モルタルを注入する。なお、無収縮モルタルは、普通の種類のものを使用してよい。   Thereafter, non-shrink mortar is injected into the gap between the existing RC pillar and the panel structure 10. The non-shrinking mortar may be a normal type.
本発明は、以上の発明の実施の形態に限定されることなく、特許請求の範囲に記載された発明の範囲内で、種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。   The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.
たとえば、前記実施の形態では、隅角部材12に凹部12aが設けられ、平板部材14に凸部14aが設けられているが、隅角部材12に凸部を設け、この凸部に対応する凹部を平板部材14に設けるようにしてもよい。   For example, in the above embodiment, the corner member 12 is provided with the recess 12a and the flat plate member 14 is provided with the projection 14a. However, the corner member 12 is provided with a projection, and the recess corresponding to the projection. May be provided on the flat plate member 14.
本発明の好ましい実施の形態に係る補強工法によって補強されたRC柱を模式的に示した部分切り取り斜視図である。It is the partial cutaway perspective view which showed typically the RC pillar reinforced by the reinforcement construction method which concerns on preferable embodiment of this invention. 本発明の好ましい実施の形態に係る補強工法によって補強されたRC柱の横断面図である。It is a cross-sectional view of the RC column reinforced by the reinforcing method according to the preferred embodiment of the present invention. 本発明の好ましい実施の形態に係る補強工法によって補強されたRC柱の正面図である。It is a front view of RC pillar reinforced by the reinforcement construction method concerning a preferred embodiment of the present invention. 本発明の補強工法に用いられる隅角部材を示した図である。It is the figure which showed the corner member used for the reinforcement construction method of this invention. 本発明の補強工法に用いられる平板部材を示した図である。It is the figure which showed the flat plate member used for the reinforcement construction method of this invention. 図2の部分6の拡大断面図である。It is an expanded sectional view of the part 6 of FIG.
符号の説明Explanation of symbols
10 パネル構造体
12 隅角部材
12a 凹部
12b 開口部
14 平板部材
14a 凸部
14b 開口部
16 締結部材(ボルト)
DESCRIPTION OF SYMBOLS 10 Panel structure 12 Corner member 12a Concave part 12b Opening part 14 Flat plate member 14a Convex part 14b Opening part 16 Fastening member (bolt)

Claims (1)

  1. 既設のRC柱を補強するための方法であって、
    補強しようとするRC柱の横断面よりも僅かに大きな横断面をもつパネル構造体で前記RC柱の周囲を被覆する段階と、
    RC柱とパネル構造体との間の隙間に無収縮モルタルを充填する段階とを含み、
    前記パネル構造体が、4個の隅角部材と、隣接する隅角部材を連結する4個の平板部材とを有し、前記隅角部材が、等辺山形鋼の各辺の内面に凹部又は凸部を設けることによって形成され、前記平板部材が、所定厚の鋼板の外面に、前記隅角部材の凹部又は凸部に合致する凸部又は凹部を設けることによって形成されており、隅角部材の前記凹部又は凸部に平板部材の前記凸部又は凹部を合致させ、締結部材で互いに固定することによって、パネル構造体を組み立てるように構成されていることを特徴とする方法。
    A method for reinforcing an existing RC pillar,
    Covering the periphery of the RC column with a panel structure having a slightly larger cross section than the cross section of the RC column to be reinforced;
    Filling the non-shrink mortar in the gap between the RC pillar and the panel structure,
    The panel structure has four corner members and four flat plate members connecting adjacent corner members, and the corner members are recessed or protruded on the inner surface of each side of the equilateral angle steel. The flat plate member is formed by providing, on the outer surface of the steel plate having a predetermined thickness, a convex portion or a concave portion that matches the concave portion or the convex portion of the corner member. A method comprising assembling a panel structure by aligning the protrusions or recesses of a flat plate member with the recesses or protrusions and fixing them with a fastening member.
JP2007317843A 2007-12-10 2007-12-10 Rc column reinforcing method Pending JP2009138478A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852034A (en) * 2010-05-10 2010-10-06 中国电力科学研究院 Dual-arc steel section structure design method
CN101852022A (en) * 2010-05-10 2010-10-06 中国电力科学研究院 Method for reinforcing transmission angle steel tower
JP2011236618A (en) * 2010-05-10 2011-11-24 Eiji Makitani Reinforcement structure of concrete column
RU2498035C1 (en) * 2012-05-11 2013-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) Spacer for building column reinforcement
RU2507356C2 (en) * 2012-05-11 2014-02-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) Method to manufacture spacers for reinforcement of building column
CN103669901A (en) * 2013-12-04 2014-03-26 岩土科技股份有限公司 Method used for reforming pile in underground space into pillar
JP2017031653A (en) * 2015-07-31 2017-02-09 東急建設株式会社 Existing column reinforcement structure and reinforcement method
JP2017031651A (en) * 2015-07-31 2017-02-09 東急建設株式会社 Existing column reinforcement structure and reinforcement method
KR102311223B1 (en) * 2020-02-14 2021-10-08 서울시립대학교 산학협력단 Resistance to earthquake reinforcement method for DIY reinforcement of multi-household house piloti column

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852034A (en) * 2010-05-10 2010-10-06 中国电力科学研究院 Dual-arc steel section structure design method
CN101852022A (en) * 2010-05-10 2010-10-06 中国电力科学研究院 Method for reinforcing transmission angle steel tower
JP2011236618A (en) * 2010-05-10 2011-11-24 Eiji Makitani Reinforcement structure of concrete column
RU2498035C1 (en) * 2012-05-11 2013-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) Spacer for building column reinforcement
RU2507356C2 (en) * 2012-05-11 2014-02-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) Method to manufacture spacers for reinforcement of building column
CN103669901A (en) * 2013-12-04 2014-03-26 岩土科技股份有限公司 Method used for reforming pile in underground space into pillar
JP2017031653A (en) * 2015-07-31 2017-02-09 東急建設株式会社 Existing column reinforcement structure and reinforcement method
JP2017031651A (en) * 2015-07-31 2017-02-09 東急建設株式会社 Existing column reinforcement structure and reinforcement method
KR102311223B1 (en) * 2020-02-14 2021-10-08 서울시립대학교 산학협력단 Resistance to earthquake reinforcement method for DIY reinforcement of multi-household house piloti column

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