JP5492656B2 - Seismic reinforcement structure separator and seismic reinforcement method - Google Patents

Seismic reinforcement structure separator and seismic reinforcement method Download PDF

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JP5492656B2
JP5492656B2 JP2010118070A JP2010118070A JP5492656B2 JP 5492656 B2 JP5492656 B2 JP 5492656B2 JP 2010118070 A JP2010118070 A JP 2010118070A JP 2010118070 A JP2010118070 A JP 2010118070A JP 5492656 B2 JP5492656 B2 JP 5492656B2
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透 齊藤
秀俊 松野
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株式会社ケー・エフ・シー
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本発明は、例えば鉄筋コンクリート建築構造物等の既設構造物の耐震補強構造に用いる耐震補強構造用セパレーター及び耐震補強工法に関する。   The present invention relates to a seismic reinforcing structure separator and a seismic reinforcing method for use in an existing structure such as a reinforced concrete building structure.

従来、鉄筋コンクリート建築構造物等の既設構造物の耐震補強構造として、例えば特許文献１のように、既設構造物の壁等に設けられている開口部の縁面に多数のアンカーボルトを植設し、外周面に多数のスタッドボルトを植設した鉄骨ブレース等の略枠状の耐震補強フレームを開口部内に設置し、耐震補強フレームの周縁部の両側外面に、耐震補強フレームと開口部縁面との間の隙間を塞ぐようにして型枠を配置し、その両型枠の開口部縁面側を耐震補強構造用のセパレーターで所定の間隔に保持すると共に、耐震補強フレームと開口部縁面と両型枠とで囲まれた固結材充填領域内に、アンカーボルト及びスタッドボルトを埋設するようにしてモルタル等の固結材を充填して固化する構成が知られている。   Conventionally, as an earthquake-proof reinforcement structure for an existing structure such as a reinforced concrete building structure, for example, as in Patent Document 1, a large number of anchor bolts are implanted on the edge of an opening provided in a wall of the existing structure. A frame-shaped seismic reinforcement frame such as a steel brace with a large number of stud bolts planted on the outer peripheral surface is installed in the opening, and the seismic reinforcement frame and the edge of the opening The mold frame is arranged so as to close the gap between the two, and the opening edge surface side of both mold frames is held at a predetermined interval by the separator for the earthquake-proof reinforcement structure, and the earthquake-proof reinforcement frame and the opening edge surface There is known a configuration in which a solidified material such as mortar is filled and solidified so that anchor bolts and stud bolts are embedded in a solidified material filling region surrounded by both molds.

このセパレーターは、略断面円弧状の金属帯板材からなり、その長手方向の複数箇所に貫通孔が形成されている。そして、金属帯板材の両端部に、金属帯板材の長手方向と略直角に屈曲することにより、型枠を挿入嵌合する略Ｕ字状の凹溝が一体的に形成されているものである。   The separator is made of a metal strip having a substantially arc-shaped cross section, and through holes are formed at a plurality of locations in the longitudinal direction. And the substantially U-shaped concave groove which inserts and fits a formwork is integrally formed in the both ends of a metal band board material by bending at a substantially right angle with the longitudinal direction of a metal band board material. .

特開２００６−２５７７８１号公報JP 2006-257781 A

しかしながら、上記セパレーターは、強度を確保するために金属帯板材を略断面円弧状に加工する必要があるため、加工コストが高い。また、貫通孔を通して固結材を回り込ませるために、固結材が回り込みにくく、空気溜まりが生じて固結材充填による強度が低下する可能性もある。また、金属帯板材の断面円弧状の部分が固結材の注入圧で開いて変形する可能性もあり、斯様な変形が生ずると、両端部の凹溝も変形して固結材が漏れてしまう不具合も生ずる。また、例えば型枠として木型枠を用い、その木型枠を除去する場合等に、その両端部の凹溝の部分が残ってしまい、美観に劣るという問題もある。   However, since the separator needs to process the metal strip material into a substantially circular arc shape in order to ensure strength, the processing cost is high. Further, since the caking material is caused to wrap around through the through-hole, the caking material is difficult to circulate, and there is a possibility that an air pool is generated and the strength due to filling of the caking material is reduced. In addition, there is a possibility that the arc-shaped portion of the cross section of the metal band plate material will open and deform due to the injection pressure of the consolidation material, and if such deformation occurs, the concave grooves at both ends will also deform and the consolidation material will leak. The trouble which ends up also arises. In addition, for example, when a wooden frame is used as a mold frame and the wooden frame is removed, there is a problem that the concave groove portions at both ends remain and the appearance is inferior.

本発明は上記課題に鑑み提案するものであって、低コストで、空気溜まりの発生を防止して固結材充填領域に固結材を確実に充填し、固結材充填による強度を確実に確保することができると共に、セパレーターの強度を高め、固結材の漏れを確実に防止でき、更には、両端部の型枠を保持する部分を簡単に撤去して、耐震補強構造の美観を高めることができる耐震補強構造用セパレーター及び耐震補強工法を提供することを目的とする。   The present invention is proposed in view of the above-mentioned problems, and is low-cost, prevents the occurrence of air pockets, reliably fills the consolidated material filling region with the consolidated material, and ensures the strength of the consolidated material filling. In addition to ensuring the strength of the separator, it is possible to reliably prevent the leakage of the binder, and furthermore, the part holding the formwork at both ends can be easily removed to enhance the aesthetics of the seismic reinforcement structure. An object of the present invention is to provide a seismic reinforcement structure separator and a seismic reinforcement method.

本発明の耐震補強構造用セパレーターは、型枠が係合される溝を有するＵ字状部材の一対と、両端側にそれぞれ設けられる前記一対のＵ字状部材を着脱自在に連結する棒状部材とを備え、前記Ｕ字状部材の各々の内壁に内側にへこむ凹部を形成し、前記内壁を貫通する前記棒状部材の端部を前記凹部内に配置し、前記凹部内に配置する締結部材により前記棒状部材の端部と前記Ｕ字状部材とを着脱自在に締結することを特徴とする。   The separator for seismic strengthening structure of the present invention includes a pair of U-shaped members having grooves into which a formwork is engaged, and a rod-shaped member that removably connects the pair of U-shaped members respectively provided on both ends. A concave portion recessed inwardly on each inner wall of the U-shaped member, and an end portion of the rod-shaped member penetrating the inner wall is disposed in the concave portion, and the fastening member disposed in the concave portion The end of the rod-shaped member and the U-shaped member are detachably fastened.

この構成によれば、低コストで加工できると共に、固結材を回り込みやすくし、空気溜まりの発生を防止して固結材充填領域に固結材を確実に充填し、固結材充填による強度を確実に確保することができる。また、セパレーターの強度を高め、セパレーターの変形による固結材の漏れを確実に防止できる。また、型枠とＵ字状部材を撤去して仕上げる場合に、両端部の型枠を保持するＵ字状部材を、工具での切断等の手間を要する作業を必要とせずに簡単且つ綺麗に撤去して、耐震補強構造の表面仕上げの美観を高めることができる。また、撤去した締結部材とＵ字状部材は再利用することにより、部品コストを低減することも可能である。   According to this configuration, it is possible to process at low cost, and it is easy to circulate the consolidated material, prevents the occurrence of air accumulation, and ensures that the consolidated material filling area is filled with the consolidated material, and the strength by filling the consolidated material. Can be ensured. Further, the strength of the separator can be increased, and leakage of the consolidated material due to the deformation of the separator can be reliably prevented. Also, when removing and finishing the formwork and U-shaped member, the U-shaped member that holds the formwork at both ends can be easily and cleanly without requiring laborious work such as cutting with a tool. Removal can enhance the aesthetics of the surface finish of the seismic reinforcement structure. Further, the cost of parts can be reduced by reusing the removed fastening member and U-shaped member.

本発明の耐震補強構造用セパレーターは、前記Ｕ字状部材の各々の外壁に、前記凹部内の前記締結部材を操作可能な窓部を設けることを特徴とする。前記窓部には、周囲が囲まれた貫通穴或いは周囲の一部が欠落している切欠が含まれる。   The separator for seismic reinforcement structure according to the present invention is characterized in that a window portion capable of operating the fastening member in the recess is provided on each outer wall of the U-shaped member. The window part includes a through hole surrounded by the periphery or a notch in which a part of the periphery is missing.

この構成によれば、特別な工具を用いずに簡単に締結部材を外すことができ、Ｕ字状部材を容易な作業で撤去することができる。   According to this configuration, the fastening member can be easily removed without using a special tool, and the U-shaped member can be removed by an easy operation.

また、本発明の既設構造物の耐震補強工法は、既設構造物の開口部内に略枠状の耐震補強フレームを配置する工程と、前記耐震補強フレームの周縁部の両側外面に、前記開口部の縁面側を本発明の耐震補強構造用セパレーターに係合するようにして型枠を配置し、前記耐震補強フレームと前記開口部の縁面との間の隙間を前記型枠で閉塞する工程と、前記耐震補強フレームと前記開口部縁面と前記両側の型枠とで囲まれる固結材充填領域内に固結材を充填して固化する工程と、前記耐震補強構造用セパレーターの前記締結部材を取り外して前記一対のＵ字状部材を撤去する工程と、前記Ｕ字状部材の撤去跡に仕上材を充填する工程とを備えることを特徴とする。   Further, the seismic reinforcement method for an existing structure according to the present invention includes a step of arranging a substantially frame-shaped seismic reinforcement frame in the opening of the existing structure, and an outer side of the peripheral edge of the seismic reinforcement frame. Disposing the mold so that the edge side engages with the seismic reinforcement structure separator of the present invention, and closing the gap between the seismic reinforcement frame and the edge of the opening with the mold; and A step of filling the solidified material into a solidified material filling region surrounded by the seismic reinforcing frame, the opening edge surface and the molds on both sides, and solidifying the solidified material; and the fastening member of the seismic reinforcing structural separator And a step of removing the pair of U-shaped members and a step of filling a finishing material in the removed traces of the U-shaped members.

この構成によれば、Ｕ字状部材の撤去で表面仕上げが美観に優れる耐震補強構造を得ることができると共に、Ｕ字状部材の撤去跡の美観をも簡単な作業で高めることができる。   According to this structure, the removal of the U-shaped member can provide an anti-seismic reinforcing structure whose surface finish is excellent in aesthetics, and the aesthetics of the removed trace of the U-shaped member can be enhanced with a simple operation.

本発明の耐震補強構造用セパレーター或いは既設構造物の耐震補強工法では、低コストで加工できると共に、固結材を回り込みやすくし、空気溜まりの発生を防止して固結材充填領域に固結材を確実に充填し、固結材充填による強度を確実に確保することができる。また、セパレーターの強度を高め、セパレーターの変形による固結材の漏れを確実に防止できる。また、木型枠等の型枠とＵ字状部材を撤去して、Ｕ字状部材の撤去跡を仕上材を充填して仕上げる場合や、仕上げの充填や表面に化粧板材を施さない場合等に、両端部の型枠を保持するＵ字状部材を、工具での切断等の手間を要する作業を必要とせずに簡単且つ綺麗に撤去して、耐震補強構造の表面仕上げの美観を高めることができる。また、撤去した締結部材とＵ字状部材は再利用することにより、部品コストを低減することも可能である。   In the seismic reinforcement structure separator of the present invention or the seismic reinforcement method for an existing structure, it can be processed at a low cost, and the consolidated material can be easily circulated to prevent the formation of air pockets. Can be reliably filled, and the strength by filling the binder can be ensured. Further, the strength of the separator can be increased, and leakage of the consolidated material due to the deformation of the separator can be reliably prevented. Also, when removing the formwork such as a wooden formwork and U-shaped member and finishing the removed trace of the U-shaped member by filling it with finishing material, or when applying finishing finish or applying no decorative board material to the surface, etc. In addition, the U-shaped member that holds the molds at both ends can be easily and cleanly removed without requiring labor-intensive operations such as cutting with a tool to enhance the aesthetics of the surface finish of the seismic reinforcement structure Can do. Further, the cost of parts can be reduced by reusing the removed fastening member and U-shaped member.

（ａ）は本発明による実施形態の耐震補強構造用セパレーターを用いた既設構構造物の耐震補強構造の正面図、同図（ｂ）は（ａ）におけるＢ−Ｂ断面図。(A) is a front view of the earthquake-resistant reinforcement structure of the existing structure using the separator for earthquake-resistant reinforcement structure of embodiment by this invention, The figure (b) is BB sectional drawing in (a). 図１（ａ）におけるＡ−Ａ拡大断面図。AA expanded sectional drawing in Fig.1 (a). 図２の一部の分解説明図。FIG. 3 is a partially exploded explanatory view of FIG. 2. （ａ）は実施形態の耐震補強構造用セパレーターの斜視図、（ｂ）はその一部の分解説明図。(A) is a perspective view of the separator for seismic reinforcement structure of embodiment, (b) is the decomposition | disassembly explanatory drawing of the one part. （ａ）は実施形態の耐震補強構造用セパレーターの正面図、（ｂ）はその縦断面図、（ｃ）はその側面図、（ｄ）は棒状部材の正面図。(A) is the front view of the separator for seismic reinforcement structure of embodiment, (b) is the longitudinal cross-sectional view, (c) is the side view, (d) is the front view of a rod-shaped member. 実施形態における既設構築物の耐震補強構造の施工手順で開口部を示す説明図。Explanatory drawing which shows an opening part in the construction procedure of the earthquake-proof reinforcement structure of the existing structure in embodiment. 実施形態における既設構築物の耐震補強構造の施工手順で開口部にアンカーボルトを設けた状態を示す説明図。Explanatory drawing which shows the state which provided the anchor bolt in the opening part by the construction procedure of the earthquake-proof reinforcement structure of the existing structure in embodiment. 実施形態における既設構築物の耐震補強構造の施工手順で開口部に耐震補強フレームを配置した状態を示す説明図。Explanatory drawing which shows the state which has arrange | positioned the earthquake-proof reinforcement flame | frame in the opening part by the construction procedure of the earthquake-proof reinforcement structure of the existing structure in embodiment. 実施形態における既設構築物の耐震補強構造の施工手順でスパイラル筋を設けた状態を示す説明図。Explanatory drawing which shows the state which provided the spiral streak in the construction procedure of the earthquake-proof reinforcement structure of the existing structure in embodiment. （ａ）〜（ｄ）は実施形態における既設構造物の耐震補強構造の施工手順を示す説明図。(A)-(d) is explanatory drawing which shows the construction procedure of the earthquake-proof reinforcement structure of the existing structure in embodiment. （ａ）及び（ｂ）は型枠とＵ字状部材を撤去する施工手順を示す説明図。(A) And (b) is explanatory drawing which shows the construction procedure which removes a formwork and a U-shaped member. 型枠とＵ字状部材を撤去した状態における耐震補強構造の一部を示す斜視説明図。Explanatory perspective drawing which shows a part of seismic reinforcement structure in the state which removed the formwork and the U-shaped member.

〔実施形態の耐震補強構造用セパレーター、既設構造物の耐震補強構造及び耐震補強工法〕
本発明による実施形態の耐震補強構造用セパレーター、既設構造物の耐震補強構造及び耐震補強工法について説明する。図１（ａ）は実施形態の耐震補強構造用セパレーターを用いた既設構構造物の耐震補強構造の正面図、同図（ｂ）は（ａ）におけるＢ−Ｂ断面図、図２は図１（ａ）におけるＡ−Ａ拡大断面図。図３は図２の一部の分解説明図である。 [Separator for seismic reinforcement structure of embodiment, seismic reinforcement structure and seismic reinforcement method for existing structure]
The separator for seismic reinforcement structure of embodiment by this invention, the seismic reinforcement structure of an existing structure, and a seismic reinforcement construction method are demonstrated. FIG. 1 (a) is a front view of the seismic reinforcement structure of an existing structure using the separator for seismic reinforcement structure of the embodiment, FIG. 1 (b) is a sectional view taken along line BB in FIG. AA expanded sectional view in (a). FIG. 3 is an exploded view of a part of FIG.

本実施形態における既設構造物の耐震補強構造は、図１〜図３に示すように、鉄筋コンクリート製構造物等の既設構造物における外壁等の躯体１に形成された開口部１ａの縁面に設けられるアンカーボルト２と、開口部１ａ内に設置される鉄骨ブレース等の略枠状の耐震補強フレーム４と、耐震補強フレーム４の外周面に設けられるスタッドボルト３と、耐震補強フレーム４の周縁部の両側外面に配置され、耐震補強フレーム４と開口部１ａの縁面との間の隙間を閉塞する型枠５ａ、５ｂと、両側の型枠５ａ、５ｂの開口部１ａの縁面側を所定の間隔に保持する耐震補強構造用のセパレーター６と、耐震補強フレーム４と開口部１ａの縁面と両側の型枠５ａ、５ｂとで囲まれる固結材充填領域Ｓ内に、アンカーボルト２とスタッドボルト３とを埋設するようにして充填され固化される無収縮モルタル等の固結材ｇとを備える。図中、７は耐震補強フレーム４と開口部１ａの縁面との間の隙間において、アンカーボルト２及びスタッドボルト３に絡めて設けられるスパイラル筋で、スパイラル筋７は必要に応じて設けられる。   As shown in FIGS. 1 to 3, the seismic reinforcement structure for an existing structure in the present embodiment is provided on an edge surface of an opening 1 a formed in a housing 1 such as an outer wall of an existing structure such as a reinforced concrete structure. Anchor bolt 2, a substantially frame-like seismic reinforcement frame 4 such as a steel brace installed in the opening 1 a, a stud bolt 3 provided on the outer peripheral surface of the seismic reinforcement frame 4, and a peripheral portion of the seismic reinforcement frame 4 The molds 5a and 5b are arranged on the outer surfaces of both sides and block the gap between the seismic reinforcement frame 4 and the edge of the opening 1a, and the edges of the openings 1a of the molds 5a and 5b on both sides are predetermined. The anchor bolt 2 and the anchor bolt 2 are placed in the filler filling region S surrounded by the seismic reinforcement structure separator 6 held at the interval, the seismic reinforcement frame 4, the edge of the opening 1a, and the molds 5a and 5b on both sides. With stud bolt 3 Filled as embedded and a caking material g of such non-shrink mortar is solidified. In the figure, reference numeral 7 denotes a spiral line provided around the anchor bolt 2 and the stud bolt 3 in the gap between the seismic reinforcement frame 4 and the edge of the opening 1a. The spiral line 7 is provided as necessary.

アンカーボルト２は、開口部１ａの縁面から突出するようにして前記縁面に多数植設されている。また、スタッドボルト３は、耐震補強フレーム４の外周面から突出するようにして前記外周面に多数植設されている。   A large number of anchor bolts 2 are implanted on the edge surface so as to protrude from the edge surface of the opening 1a. A large number of stud bolts 3 are implanted on the outer peripheral surface so as to protrude from the outer peripheral surface of the seismic reinforcement frame 4.

耐震補強フレーム４は、略方形のフレーム本体４ａと、その内部に溶接等で取付けた複数本の補強用の筋交い４ｂとから構成され、フレーム本体４ａ及び筋交い４ｂは例えば図２のＨ型鋼等で形成される。フレーム本体４ａをＨ型鋼で構成する場合、外周側の片のうち固結材充填作業等の作業側となる片の一部は予め工場等で切除しておくとよく、図２の例では作業側となることが多い既設構造物の屋内側の一方の片を切除したものが用いられている。これにより、耐震補強フレーム４と開口部１ａの縁面との間の隙間に対する開放部分を大きく確保し、後述する固結材ｇの充填作業やスパイラル筋７の装填作業等を容易且つ迅速に行うことが可能となる。   The seismic reinforcement frame 4 includes a substantially square frame body 4a and a plurality of reinforcement braces 4b attached to the inside thereof by welding or the like. The frame body 4a and the brace 4b are made of, for example, H-shaped steel shown in FIG. It is formed. When the frame body 4a is made of H-shaped steel, a part of the outer side piece on the work side such as a filling material filling work may be cut in advance at a factory or the like. In the example of FIG. The one which cut off one piece of the indoor side of the existing structure which often becomes the side is used. As a result, a large open portion with respect to the gap between the seismic reinforcement frame 4 and the edge surface of the opening 1a is ensured, and the filling operation of the consolidated material g and the loading operation of the spiral muscle 7 described later are performed easily and quickly. It becomes possible.

型枠５ａ、５ｂは、耐震補強フレーム４と開口部１ａの縁面との間の隙間の内側と外側とにそれぞれ設けられ、本例では木製の型枠（木型枠）である。図２の例では、耐震補強フレーム４を建物の外側から建て込むことを想定した耐震補強フレーム４の形状であるため、耐震補強フレーム４と開口部１ａの縁面との間の隙間に対する開放部分が作業側である屋内側で大きくなることから、屋内側の型枠５ａは屋外側の型枠５ｂよりも幅広に形成されている。   The molds 5a and 5b are provided on the inner side and the outer side of the gap between the seismic reinforcement frame 4 and the edge surface of the opening 1a, respectively, and are wooden molds (wooden frames) in this example. In the example of FIG. 2, since it is the shape of the seismic reinforcement frame 4 assuming that the seismic reinforcement frame 4 is built from the outside of the building, the open portion with respect to the gap between the seismic reinforcement frame 4 and the edge surface of the opening 1a Is larger on the indoor side which is the work side, the indoor formwork 5a is formed wider than the outdoor formwork 5b.

セパレーター６は、図４及び図５に示すように、型枠５ａ、５ｂの厚みに対応し、型枠５ａ、５ｂがそれぞれ挿入して係合される溝６１１を有するＵ字状部材６１の一対と、両端側にそれぞれ設けられる一対のＵ字状部材６１・６１を着脱自在に連結する棒状部材６２とを備える。棒状部材６２は、好適には直径を５ｍｍ〜１０ｍｍとする略円柱状の丸棒材であり、その両端部にはそれぞれ螺子部６２１・６２１が形成され、螺子部６２１・６２１には溝６１１の向きを揃えるようにしてＵ字状部材６１が螺着されている。尚、棒状部材６２は、略円柱状に限定されず、例えば略楕円柱状、或いは断面視三角形、四角形、六角形等の略多角柱状とすることも可能である。   4 and 5, the separator 6 corresponds to the thickness of the molds 5a and 5b, and a pair of U-shaped members 61 each having a groove 611 into which the molds 5a and 5b are inserted and engaged. And a rod-shaped member 62 that removably connects a pair of U-shaped members 61 and 61 provided on both ends. The rod-like member 62 is preferably a substantially cylindrical round rod member having a diameter of 5 mm to 10 mm, and screw portions 621 and 621 are formed at both ends thereof, and grooves 611 are formed in the screw portions 621 and 621, respectively. A U-shaped member 61 is screwed so that the directions are aligned. The rod-shaped member 62 is not limited to a substantially cylindrical shape, and may be a substantially elliptical column shape, or a substantially polygonal column shape such as a triangular shape, a square shape, a hexagonal shape, etc.

Ｕ字状部材６１の各々の内壁６１２には、内側に截頭円錐形にへこんで形成されている凹部６１３が設けられており、凹部６１３の貫通孔６１４を貫通するようにして棒状部材６２の端部が内壁６１２を貫通して配置され、棒状部材６２の端部にある螺子部６２１が凹部６１３内に配置され、溝６１１内に突出しないようになっている。螺子部６２１には、凹部６１３の底部を挟むようにして内側のナット６３と凹部６１３内に収納して配置される締結部材に相当する外側のナット６４が螺合されており、Ｕ字状部材６１は、ナット６３、６４の締め付けで棒状部材６２の端部である螺子部６２１の所定位置に着脱自在に締着されている。また、Ｕ字状部材６１の各々の外壁６１５に、凹部６１３内の締結部材である外側のナット６４を操作可能な窓部６１６が設けられている。窓部６１６は、周囲が囲まれた貫通穴或いは周囲の一部が欠落している切欠等とすることが可能であるが、本例では貫通穴になっている。   Each inner wall 612 of the U-shaped member 61 is provided with a recess 613 formed in a conical conical shape on the inside, and the bar-shaped member 62 is formed so as to penetrate the through hole 614 of the recess 613. The end portion is disposed through the inner wall 612, and the screw portion 621 at the end portion of the rod-shaped member 62 is disposed in the recessed portion 613 so as not to protrude into the groove 611. An inner nut 63 and an outer nut 64 corresponding to a fastening member housed in the recess 613 are screwed into the screw portion 621 so as to sandwich the bottom portion of the recess 613, and the U-shaped member 61 is The nuts 63 and 64 are detachably fastened to a predetermined position of a screw portion 621 that is an end portion of the rod-like member 62 by tightening the nuts 63 and 64. Further, each outer wall 615 of the U-shaped member 61 is provided with a window portion 616 capable of operating an outer nut 64 that is a fastening member in the recess 613. The window portion 616 can be a through-hole surrounded by the periphery or a notch in which a part of the periphery is missing, but is a through-hole in this example.

セパレーター６で所定の間隔に保持された各型枠５ａ、５ｂの他端側や中央は、耐震補強フレーム４の周縁部外側面に当接配置された型枠把持部材８で把持される。本例の型枠把持部材８はねじタイプであり、引掛部８１を耐震補強フレーム４に引っ掛け、ねじ式の把持部８２で外側から型枠５ａ、５ｂを把持するようになっている。   The other ends and the centers of the molds 5 a and 5 b held at a predetermined interval by the separator 6 are gripped by a mold gripping member 8 disposed in contact with the outer peripheral surface of the seismic reinforcement frame 4. The formwork gripping member 8 of this example is a screw type. The hooking part 81 is hooked on the seismic reinforcement frame 4, and the formwork 5 a, 5 b is gripped from the outside by the screw-type gripping part 82.

型枠５ａの下部の左右方向中央部には、図１に示すように固結材充填領域Ｓ内にモルタル等の固結材ｇを注入充填するための注入口９が設けられ、開口部１ａの左右両側部に位置する型枠５ａの上下方向中央部には予備注入口９ａが、また型枠５ａの上部の左右方向中央部には予備注入口９ｂがそれぞれ設けられている。各注入口９、予備注入口９ａ・９ｂには、図示省略する注入ホースを接続することによって固結材充填領域Ｓ内に固結材ｇを注入する構成であるが、注入口９、予備注入口９ａ・９ｂの配置位置や、それに対する注入ホースの接続構造等は適宜である。   An injection port 9 for injecting and filling a consolidated material g such as mortar into the consolidated material filling region S as shown in FIG. A pre-injection port 9a is provided at the center in the vertical direction of the mold 5a located on both left and right sides, and a pre-injection port 9b is provided at the center in the left-right direction at the top of the mold 5a. Each of the injection ports 9 and the preliminary injection ports 9a and 9b is configured to inject the consolidated material g into the consolidated material filling region S by connecting an injection hose (not shown). The arrangement positions of the inlets 9a and 9b, the connection structure of the injection hose with respect thereto, and the like are appropriate.

型枠５ａの最上部の両側角部には、図１に示すように空気抜き孔１１が設けられ、その空気抜き孔１１には図示省略する抜気ホースを挿通することによって固結材充填領域Ｓ内に固結材ｇを注入する際に固結材充填領域Ｓ内に残留する空気を排出させるようになっている。空気抜き孔１１の配置位置や、それに対する抜気ホースの接続構造も適宜である。また、各型枠５ａ、５ｂの外面と開口部１ａの縁面との角部には、必要に応じてシール専用モルタル又はエポキシ樹脂等のシール部材１３を設けるとよい。   As shown in FIG. 1, air vent holes 11 are provided at the upper corners of the uppermost part of the mold 5 a, and an air exhaust hose (not shown) is inserted into the air vent hole 11 so that the inside of the consolidated material filling region S is inserted. When the caking material g is injected into the caulking material, air remaining in the caking material filling region S is discharged. The arrangement position of the air vent hole 11 and the connection structure of the air hose relative thereto are also appropriate. Moreover, it is good to provide the sealing members 13, such as mortar only for a seal | sticker, or an epoxy resin, at the corner | angular part of the outer surface of each mold 5a, 5b and the edge surface of the opening part 1a.

次に、耐震補強工法を施工する場合の具体的な手順の一例を説明する。先ず、図６に示すように耐震補強すべき鉄筋コンクリート製建築構造物等の既設構築物における外壁等の躯体１に形成した開口部１ａの縁面をピック等で目荒らしした後、図７に示すように開口部１ａの縁面にアンカーボルト２を開口部１ａの周方向に所定のピッチで植設する。その植設方法は適宜であるが、例えば開口部１ａの縁面にアンカーボルト２の挿入孔を穿孔した後、挿入孔内に接着系カプセル等を挿入し、そのカプセルをアンカーボルト２で破壊すると共にアンカーボルト２で接着剤を攪拌混合して反応させながら固定すればよい。   Next, an example of a specific procedure when constructing the seismic reinforcement method will be described. First, as shown in FIG. 7, the edge surface of the opening 1a formed in the housing 1 such as the outer wall in an existing structure such as a reinforced concrete building structure to be seismically reinforced as shown in FIG. 6 is roughened with a pick or the like. Anchor bolts 2 are planted at a predetermined pitch in the circumferential direction of the opening 1a on the edge surface of the opening 1a. For example, after an insertion hole of the anchor bolt 2 is drilled in the edge surface of the opening 1a, an adhesive capsule or the like is inserted into the insertion hole, and the capsule is broken by the anchor bolt 2. At the same time, the anchor bolt 2 may be stirred and mixed to fix it while reacting.

尚、開口部１ａの縁面には、必要に応じてフレーム仮止め用のアンカー（不図示）等を打設すると共に、開口部１ａの縁面を適宜の手段で清掃した後、その表面にシール部材１３との密着強度の確保および耐震補強フレーム４と開口部１ａの縁面との間に充填される固結材ｇの品質を確保するためのプライマーを噴霧器等で塗布しておくとよい。   In addition, an anchor (not shown) for temporarily fixing the frame is provided on the edge surface of the opening 1a as necessary, and the edge surface of the opening 1a is cleaned by an appropriate means, and then the surface is removed. A primer for ensuring the adhesion strength with the seal member 13 and the quality of the consolidated material g filled between the seismic reinforcement frame 4 and the edge surface of the opening 1a may be applied with a sprayer or the like. .

次いで、開口部１ａ内に図８に示すように耐震補強フレーム４を収容配置する。耐震補強フレーム４は、予め工場等で開口部１ａの大きさに合わせて所定形状に形成すると共に、耐震補強フレーム４の外周面にスタッドボルト３を所定ピッチで溶接等で固着しておく。また、耐震補強フレーム４は、耐震補強すべき躯体１の開口部１ａの縁面との間に固結材ｇの固結材充填領域Ｓが充分に確保できるように開口部１ａの縁面より一回り小さく形成する。尚、耐震補強フレーム４は図８に示すような、いわゆるＫ型ブレースのほか、Ｄ型ブレースなどと呼称されるもの、さらには耐震補強フレーム４に出入口通路を設置できるようにフレーム本体４ａの下部の一部が切り欠かれている、いわゆるマンサード型等もあり、本発明はいずれの構成のものにも適用できる。   Next, the seismic reinforcement frame 4 is accommodated in the opening 1a as shown in FIG. The seismic reinforcement frame 4 is formed in advance in a predetermined shape in accordance with the size of the opening 1a at a factory or the like, and the stud bolt 3 is fixed to the outer peripheral surface of the earthquake resistance reinforcement frame 4 at a predetermined pitch by welding or the like. Further, the seismic reinforcement frame 4 is provided from the edge surface of the opening 1a so that the consolidation material filling region S of the consolidation material g can be sufficiently secured between the seismic reinforcement frame 4 and the edge surface of the opening 1a of the housing 1 to be seismically reinforced. Form a little smaller. In addition to the so-called K-type brace as shown in FIG. 8, the seismic reinforcement frame 4 is called a D-type brace or the like, and the lower part of the frame body 4 a so that an entrance / exit passage can be installed in the seismic reinforcement frame 4. There is also a so-called Mansard type in which a part of is cut out, and the present invention can be applied to any configuration.

開口部１ａ内に収容配置した耐震補強フレーム４は、フレーム仮止め用のアンカー（不図示）に溶接する等して所定の位置に固定するもので、そのとき、開口部１ａの縁面に植設したアンカーボルト２と、耐震補強フレーム４の外周面に植設したスタッドボルト３とは、図８のように互いに交互にかみ合うように配置される。そして、耐震補強フレーム４と開口部１ａの縁面との間には、必要に応じて図９、図１０（ａ）に示すようにスパイラル筋７等を配筋するもので、その際、スパイラル筋７はアンカーボルト２とスタッドボルト３に図に省略した針金等で結束するのが望ましい。   The seismic reinforcement frame 4 accommodated in the opening 1a is fixed to a predetermined position by welding or the like to an anchor (not shown) for temporarily fixing the frame. At that time, it is planted on the edge surface of the opening 1a. The anchor bolt 2 provided and the stud bolt 3 planted on the outer peripheral surface of the seismic reinforcement frame 4 are arranged so as to alternately engage with each other as shown in FIG. Then, as shown in FIG. 9 and FIG. 10 (a), the spiral reinforcement 7 and the like are arranged between the seismic reinforcement frame 4 and the edge surface of the opening 1a. The muscle 7 is preferably bound to the anchor bolt 2 and the stud bolt 3 with a wire or the like omitted in the drawing.

次いで、図１０（ｂ）、（ｃ）のように、耐震補強フレーム４と開口部１ａとの間の隙間において、開口部１ａの縁面にセパレーター６を設けると共に、セパレーター６の溝６１１に挿入係合し、且つ、耐震補強フレーム４の周縁部の両側外面に、耐震補強フレーム４と開口部１ａの縁面との間の隙間を塞ぐようにして、型枠５ａ、５ｂを配置する。型枠５ａ、５ｂの開口部１ａの縁面側の端部は、セパレーター６により所定の間隔に保持され、開口部１ａの縁面に配置固定される。尚、型枠５ａ、５ｂを溝６１１に挿入する際に、棒状部材６２の端部とナット６４は凹部６１３内に配置されているため、干渉することはない。また、各型枠５ａ、５ｂの幅は、耐震補強フレーム４と開口部１ａの縁面との間隔よりもやや広めに形成しておき、各型枠５ａ、５ｂの一部が耐震補強フレーム４をラップするように構成することが望ましい。   Next, as shown in FIGS. 10B and 10C, a separator 6 is provided on the edge surface of the opening 1a in the gap between the seismic reinforcement frame 4 and the opening 1a, and is inserted into the groove 611 of the separator 6. The molds 5a and 5b are arranged so as to close the gap between the seismic reinforcement frame 4 and the edge surface of the opening 1a on the outer surfaces on both sides of the peripheral edge of the seismic reinforcement frame 4. The edge part of the edge part of the opening part 1a of the formwork 5a, 5b is hold | maintained at the predetermined space | interval by the separator 6, and is arrange | positioned and fixed to the edge face of the opening part 1a. When the molds 5a and 5b are inserted into the groove 611, the end of the rod-shaped member 62 and the nut 64 are disposed in the recess 613, so that they do not interfere with each other. The width of each mold 5a, 5b is formed to be slightly wider than the distance between the seismic reinforcement frame 4 and the edge of the opening 1a, and a part of each mold 5a, 5b is seismic reinforcement frame 4. It is desirable to configure to wrap.

次に、図１０（ｃ）に示すように、セパレーター６で所定の間隔に保持された状態で開口部１ａの縁面に配置固定された各型枠５ａ、５ｂの耐震補強フレーム４側について、耐震補強フレーム４の外側面にラップさせて型枠把持部材８で固定する。型枠把持部材８は、引掛部８１を耐震補強フレーム４に引っ掛け、ねじ式の把持部８２で外側から型枠５ａ、５ｂを押圧して把持する。尚、型枠把持部材８もセパレーター６と同様に各型枠５ａ、５ｂの長手方向に複数個に設置するのが望ましい。   Next, as shown in FIG. 10C, the seismic reinforcement frame 4 side of each of the molds 5a and 5b arranged and fixed on the edge surface of the opening 1a while being held at a predetermined interval by the separator 6, It is wrapped with the outer surface of the seismic reinforcement frame 4 and fixed with the mold gripping member 8. The mold gripping member 8 hooks the hook portion 81 on the seismic reinforcement frame 4 and presses and grips the molds 5 a and 5 b from the outside with the screw-type gripping portion 82. In addition, it is desirable to install a plurality of mold holding members 8 in the longitudinal direction of the respective molds 5a and 5b, similarly to the separator 6.

その後、図１０（ｄ）に示すように、注入口９に注入ホース１０を接続し、開口部１ａの上部角部等に抜気ホースを設置した後、各型枠５ａ、５ｂの外面と開口部１ａの縁面との角部に、必要に応じてシール専用モルタル又はエポキシ樹脂等のシール部材１３を設けて密封する。そして、注入ホース１０からモルタル等の固結材ｇを耐震補強フレーム４と開口部１ａの縁面との間の両型枠５ａ、５ｂで閉塞された固結材充填領域Ｓに注入充填し、固結材充填領域Ｓ内にアンカーボルト２とスタットボルト３を埋設するようにして、固結材ｇを固化させる。更に、この固結材ｇは、Ｕ字状部材６１の内壁６１２やその一部である凹部６１３の内側面に亘って接触すると共に、Ｕ字状部材６１・６１を連結する棒状部材６２をほぼ全長に亘って埋設するようにして、固化される。尚、固結材充填領域Ｓに固結材ｇを注入する際、固結材充填領域Ｓ内に残留する空気は前述の抜気ホースから排出されるため、固結材充填領域Ｓの上部に空気溜まり等が生じるのが防止される。   After that, as shown in FIG. 10 (d), the injection hose 10 is connected to the injection port 9, and after the extraction hose is installed at the upper corner of the opening 1a, the outer surface and the opening of each mold 5a, 5b. A sealing member 13 such as a seal-only mortar or an epoxy resin is provided at the corner with the edge surface of the portion 1a as necessary, and sealed. Then, a filling material g such as mortar is injected and filled from the injection hose 10 into the filling material filling region S closed by both mold frames 5a and 5b between the seismic reinforcement frame 4 and the edge surface of the opening 1a. The anchor bolt 2 and the stat bolt 3 are embedded in the consolidated material filling region S, and the consolidated material g is solidified. Further, the consolidated material g contacts the inner wall 612 of the U-shaped member 61 and the inner surface of the concave portion 613 which is a part of the U-shaped member 61, and substantially connects the rod-shaped member 62 that connects the U-shaped members 61 and 61. It is solidified so as to be buried over the entire length. In addition, when the consolidated material g is injected into the consolidated material filling region S, air remaining in the consolidated material filled region S is discharged from the above-described venting hose. Air accumulation and the like are prevented from occurring.

固結材９が所定強度に達するまで固化したなら、次いで、図１１（ａ）に示すように、把持部８２のねじを弛めて引掛部８１を耐震補強フレーム４から取り外して型枠保持部材８を撤去すると共に、型枠５ａ、５ｂを溝６１１への係合から抜き出して撤去する。更に、図１１（ｂ）に示すように、Ｕ字状部材６１の窓部６１６から工具を入れて凹部６１３内の締結部材であるナット６４の螺合を弛めて螺子部６２１から取り外し、Ｕ字状部材６１も螺子部６２１も取り外して、棒状部材６２から両端部のＵ字状部材６１・６１を撤去する。   When the consolidated material 9 is solidified until it reaches a predetermined strength, as shown in FIG. 11A, the screw of the gripping portion 82 is loosened and the hooking portion 81 is detached from the seismic reinforcement frame 4 to form the mold holding member. 8 is removed, and the molds 5a and 5b are removed from the engagement with the groove 611 and removed. Further, as shown in FIG. 11 (b), a tool is inserted from the window portion 616 of the U-shaped member 61, the screwing of the nut 64, which is a fastening member in the recess 613, is loosened and removed from the screw portion 621. Both the character-shaped member 61 and the screw portion 621 are removed, and the U-shaped members 61 and 61 at both ends are removed from the rod-shaped member 62.

Ｕ字状部材６１を撤去した固結材ｇには、図１２に示すように、Ｕ字状部材６１の撤去跡ｇ１である窪みがへこんで残るので、この撤去跡ｇ１にはモルタル等の仕上材を充填してコテ仕上げする。また、撤去したＵ字状部材６１とナット６４は、再利用することが可能である。尚、撤去跡ｇ１への仕上材の充填や表面に化粧板材を敷設することを行わずに、撤去跡ｇ１をそのままの状態にすることも可能である。   As shown in FIG. 12, the caulking material g from which the U-shaped member 61 has been removed has a dent that remains as the removed trace g1 of the U-shaped member 61, and the removed trace g1 has a finish such as mortar. Fill the material and finish the iron. Further, the removed U-shaped member 61 and the nut 64 can be reused. It is also possible to leave the removal trace g1 as it is without filling the removal trace g1 with a finishing material or laying a decorative board material on the surface.

本実施形態では、セパレーター６を低コストで加工できると共に、固結材ｇを回り込みやすくし、空気溜まりの発生を防止して固結材充填領域Ｓに固結材ｇを確実に充填し、固結材充填による強度を確実に確保することができる。また、セパレーター６の強度を高め、セパレーター６の変形による固結材ｇの漏れを確実に防止できる。また、型枠５ａ、５ｂとＵ字状部材６１を撤去して仕上げる場合に、両端部の型枠５ａ、５ｂを保持するＵ字状部材６１を、工具での切断等の手間を要する作業を必要とせずに簡単且つ綺麗に撤去して、耐震補強構造の表面仕上げの美観を高めることができる。また、撤去した締結部材であるナット６４とＵ字状部材６１は再利用することにより、部品コストを低減することも可能である。   In the present embodiment, the separator 6 can be processed at low cost, and the consolidated material g can be easily circulated, and air can be prevented from being generated, and the consolidated material filling region S can be reliably filled with the consolidated material g. It is possible to ensure the strength by filling the binder. Further, the strength of the separator 6 can be increased, and the leakage of the consolidated material g due to the deformation of the separator 6 can be reliably prevented. Moreover, when removing and finishing the molds 5a and 5b and the U-shaped member 61, the U-shaped member 61 holding the molds 5a and 5b at both ends is subjected to work that requires labor such as cutting with a tool. It can be removed easily and neatly without the need to improve the surface finish of the seismic reinforcement structure. Moreover, it is also possible to reduce component cost by reusing the nut 64 and the U-shaped member 61 which are the removed fastening members.

また、窓部６１６により、特別な工具を用いずに簡単にナット６４を外すことができ、Ｕ字状部材６１を容易な作業で撤去することができる。また、仕上材の充填により、Ｕ字状部材６１の撤去跡ｇ１の美観をも簡単な作業で高めることができる。   In addition, the window portion 616 can easily remove the nut 64 without using a special tool, and the U-shaped member 61 can be removed by an easy operation. Moreover, the beauty of the removal trace g1 of the U-shaped member 61 can be enhanced by a simple operation by filling the finishing material.

尚、本明細書開示の発明には、各発明や実施形態等の構成の他に、これらの部分的な構成を本明細書開示の他の構成に変更して特定したもの、或いはこれらの構成に本明細書開示の他の構成を付加して特定したもの、或いはこれらの部分的な構成を部分的な作用効果が得られる限度で削除して特定した上位概念化したものも含まれる。また、上記実施形態では、耐震補強フレーム４を用いる耐震補強構造を例としたが、本発明の耐震補強構造用セパレーターは、耐震補強フレーム４を用いない耐震補強構造にも適用可能である。   In addition to the configurations of the inventions and embodiments, the invention disclosed in the present specification includes those specified by changing these partial configurations to other configurations disclosed in the present specification, or these configurations. To which other configurations disclosed in the present specification are added and specified, or those partial configurations deleted and specified to the extent that partial effects can be obtained are included. Moreover, in the said embodiment, although the earthquake-resistant reinforcement structure using the earthquake-resistant reinforcement frame 4 was taken as an example, the separator for earthquake-resistant reinforcement structure of this invention is applicable also to the earthquake-resistant reinforcement structure which does not use the earthquake-resistant reinforcement frame 4. FIG.

本発明は、既設構造物の耐震補強に利用することができる。   The present invention can be used for seismic reinforcement of existing structures.

１…躯体 １ａ…開口部 ２…アンカーボルト ３…スタッドボルト ４…耐震補強フレーム ４ａ…フレーム本体 ４ｂ…筋交い ５ａ、５ｂ…型枠 ６…セパレーター ６１…Ｕ字状部材 ６１１…溝 ６１２…内壁 ６１３…凹部 ６１４…貫通孔 ６１５…外壁 ６１６…窓部 ６２…棒状部材 ６２１…螺子部 ６３、６４…ナット ７…スパイラル筋 ８…型枠把持部材 ８１…引掛部 ８２…把持部 ９…注入口 ９ａ…予備注入口 ９ｂ…予備注入口 １０…注入ホース １１…空気抜き孔 １３…シール部材 Ｓ…固結材充填領域 ｇ…固結材 ｇ１…撤去跡 DESCRIPTION OF SYMBOLS 1 ... Housing 1a ... Opening 2 ... Anchor bolt 3 ... Stud bolt 4 ... Seismic reinforcement frame 4a ... Frame main body 4b ... Bracing 5a, 5b ... Formwork 6 ... Separator 61 ... U-shaped member 611 ... Groove 612 ... Inner wall 613 ... Recessed part 614 ... Through hole 615 ... Outer wall 616 ... Window part 62 ... Bar-shaped member 621 ... Screw part 63, 64 ... Nut 7 ... Spiral muscle 8 ... Formwork gripping member 81 ... Hooking part 82 ... Holding part 9 ... Injection port 9a ... Preliminary Injection port 9b ... Preliminary injection port 10 ... Injection hose 11 ... Air vent hole 13 ... Sealing member S ... Solidified material filling area g ... Solidified material g1 ... Trace of removal

Claims (3)

型枠が係合される溝を有するＵ字状部材の一対と、
両端側にそれぞれ設けられる前記一対のＵ字状部材を着脱自在に連結する棒状部材とを備え、
前記Ｕ字状部材の各々の内壁に内側にへこむ凹部を形成し、
前記内壁を貫通する前記棒状部材の端部を前記凹部内に配置し、
前記凹部内に配置する締結部材により前記棒状部材の端部と前記Ｕ字状部材とを着脱自在に締結することを特徴とする耐震補強構造用セパレーター。 A pair of U-shaped members having grooves into which the formwork is engaged;
A rod-like member that removably connects the pair of U-shaped members provided on both ends,
Forming a recess recessed inside on each inner wall of the U-shaped member;
An end of the rod-shaped member that penetrates the inner wall is disposed in the recess,
A separator for an earthquake-proof reinforcement structure, wherein an end of the rod-shaped member and the U-shaped member are detachably fastened by a fastening member disposed in the recess. 前記Ｕ字状部材の各々の外壁に、前記凹部内の前記締結部材を操作可能な窓部を設けることを特徴とする請求項１記載の耐震補強構造用セパレーター。   The separator for an earthquake-proof reinforcement structure according to claim 1, wherein a window portion capable of operating the fastening member in the recess is provided on each outer wall of the U-shaped member. 既設構造物の開口部内に略枠状の耐震補強フレームを配置する工程と、
前記耐震補強フレームの周縁部の両側外面に、前記開口部の縁面側を請求項１又は２記載の耐震補強構造用セパレーターに係合するようにして型枠を配置し、前記耐震補強フレームと前記開口部の縁面との間の隙間を前記型枠で閉塞する工程と、
前記耐震補強フレームと前記開口部縁面と前記両側の型枠とで囲まれる固結材充填領域内に固結材を充填して固化する工程と、
前記耐震補強構造用セパレーターの前記締結部材を取り外して前記一対のＵ字状部材を撤去する工程と、
前記Ｕ字状部材の撤去跡に仕上材を充填する工程と、
を備えることを特徴とする既設構造物の耐震補強工法。 Placing a substantially frame-shaped seismic reinforcement frame in the opening of an existing structure;
A mold is arranged on both outer surfaces of the peripheral edge of the seismic reinforcement frame so that the edge side of the opening is engaged with the seismic reinforcement structural separator according to claim 1, and the seismic reinforcement frame and Closing the gap between the edge of the opening with the mold, and
Filling the solidified material in a solidified material filling region surrounded by the seismic reinforcement frame, the opening edge surface and the molds on both sides, and solidifying;
Removing the fastening member of the seismic reinforcing structural separator and removing the pair of U-shaped members;
Filling a finishing material into the removal trace of the U-shaped member;
A seismic reinforcement method for existing structures characterized by comprising:
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