JP4344300B2 - Seismic reinforcement structure for sleeve wall columns - Google Patents

Seismic reinforcement structure for sleeve wall columns Download PDF

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JP4344300B2
JP4344300B2 JP2004275185A JP2004275185A JP4344300B2 JP 4344300 B2 JP4344300 B2 JP 4344300B2 JP 2004275185 A JP2004275185 A JP 2004275185A JP 2004275185 A JP2004275185 A JP 2004275185A JP 4344300 B2 JP4344300 B2 JP 4344300B2
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sleeve wall
bent
reinforcing steel
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steel plate
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直洋 西山
正彦 立花
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Nishimatsu Construction Co Ltd
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本発明は、柱部に袖壁部が連設されてなる袖壁柱の耐震補強構造に関する。   The present invention relates to a seismic reinforcement structure for a sleeve wall column, in which a sleeve wall portion is connected to a column portion.

従来より、鉄筋コンクリート柱などのコンクリート構造物の耐震補強工法としては、例えば、構造物に鋼板を巻き立てる鋼板巻き立て工法や、構造物にアラミド繊維や炭素繊維シートを接着剤により巻き立てる繊維シート巻き立て工法等が採用されている。
鋼板巻き立て工法は、安価で比較的安定して補強効果を得られる工法であるが、通常、溶接により鋼板の取り付けを行っているので、肉厚４．５ｍｍ以上の鋼板を使用しなければならず、重く、ハンドリングが困難であり、巻き立て時に重機を使用しなければならなかった。また、大きな鋼板を用いるため曲げ加工等の施工性が悪く、さらに、溶接技能やクレーン運転技能等の有資格者を必要としなければならなかった。しかも、鋼板の継ぎ手を現場溶接する溶接工の技量により補強効果にばらつきを生じる可能性があるとともに、溶接用のバーナー等の火気を使用しなければならないという問題もあった。 Conventionally, as a seismic reinforcement method for concrete structures such as reinforced concrete columns, for example, a steel sheet winding method for winding a steel plate around the structure, or a fiber sheet winding for winding an aramid fiber or carbon fiber sheet around the structure with an adhesive A vertical construction method is adopted.
The steel sheet winding method is an inexpensive and relatively stable method of obtaining a reinforcing effect, but since steel plates are usually attached by welding, steel plates with a thickness of 4.5 mm or more must be used. It was heavy and difficult to handle, and heavy machinery had to be used for winding. In addition, since a large steel plate is used, workability such as bending is poor, and furthermore, qualified personnel such as welding skills and crane operation skills must be required. In addition, there is a possibility that the reinforcing effect may vary depending on the skill of the welder who welds the steel plate joint on-site, and there is also a problem that a fire such as a welding burner must be used.

また、特に柱部に袖壁部が連設された袖壁柱の補強に関しては、例えば、袖壁柱の柱部の表面に一対のＦＲＰ成形板を配置し、それぞれのＦＲＰ成形板の各端部を定着用アンカーによって固着することによって補強する工法が開示されている（例えば、特許文献１参照）。この工法において、ＦＲＰ成形板は、強化繊維と樹脂とを複合してコ字型の形状に成形したものであり、柱部のみを覆うようにして互いに対向して配置されており、柱部の表面とＦＲＰ成形板との間にモルタル等の充填材を充填して固定する。その後、袖壁部に形成された貫通孔に複数本の強化繊維が束ねられてなる定着用アンカーを挿通するとともに、定着用アンカーの両端部をそれぞれ扇状に広げてＦＲＰ成形板の両端部に固着させることによって、袖壁部によって分断されたＦＲＰ成形板どうしを連結するとともに、袖壁柱の補強を行っている。
特開２００３−１２００４２号公報 In particular, with regard to the reinforcement of the sleeve wall column in which the sleeve wall portion is connected to the column portion, for example, a pair of FRP molded plates are arranged on the surface of the column portion of the sleeve wall column, and each end of each FRP molded plate is arranged. A method of reinforcing a portion by fixing it with a fixing anchor is disclosed (for example, see Patent Document 1). In this construction method, the FRP molded plate is formed by combining reinforcing fibers and resin into a U-shaped shape, and is disposed to face each other so as to cover only the column portion. A filler such as mortar is filled and fixed between the surface and the FRP molded plate. After that, a fixing anchor formed by bundling a plurality of reinforcing fibers is inserted into a through-hole formed in the sleeve wall portion, and both ends of the fixing anchor are expanded in a fan shape and fixed to both ends of the FRP molded plate. By doing so, the FRP molded plates divided by the sleeve wall portions are connected to each other and the sleeve wall pillars are reinforced.
JP 2003-120042 A

しかしながら、上記特許文献１に示す強化繊維を成形してなるＦＲＰ成形板及び定着アンカーを使用した補強工法は比較的簡易な工法であるが、非常に高価であり、また、柱の形状や寸法によってＦＲＰ成形板を随時成形する必要があるため、施工面及びコスト面で
不利なものであった。また、一対のＦＲＰ成形板どうしを、袖壁部を介して連結する定着アンカーは、袖壁部に形成された貫通孔にそれぞれ挿通させた後に、端部を扇状に開いて接着剤等によりＦＲＰ成形板に固着しているため、十分な補強効果が得られない可能性があった。さらに、この工法の場合、せん断力が働かないように柱のコーナー部分に曲率を設ける必要があるので、ハツリ工事を伴うとともに、施工に熟練を要するという問題があった。また、接着剤が可燃性であるためその対策も必要であった。
本発明は、上記事情に鑑みてなされたもので、接着剤を使用せずにボルト等の機械式継手を使用することにより補強性能を格段に向上させることができるとともに、安価でかつ施工面に優れた袖壁柱の耐震補強構造を提供することを目的としている。 However, although the reinforcing method using the FRP molded plate formed by molding the reinforcing fiber and the fixing anchor shown in Patent Document 1 is a relatively simple method, it is very expensive and depends on the shape and dimensions of the column. Since it was necessary to form the FRP molded plate at any time, it was disadvantageous in terms of construction and cost. In addition, fixing anchors that connect a pair of FRP molded plates through the sleeve wall portions are inserted through through holes formed in the sleeve wall portions, and then the ends are fan-shaped and FRP is formed with an adhesive or the like. Since it is fixed to the molded plate, there is a possibility that a sufficient reinforcing effect cannot be obtained. Furthermore, in the case of this construction method, it is necessary to provide curvature at the corner portion of the column so that shearing force does not work. Moreover, since the adhesive was flammable, the countermeasure was also needed.
The present invention has been made in view of the above circumstances, and by using a mechanical joint such as a bolt without using an adhesive, the reinforcing performance can be remarkably improved, and at a low cost and on the construction surface. The objective is to provide an excellent seismic reinforcement structure for sleeve wall columns.

上記課題を解決するために、請求項１の発明は、例えば、図１〜図３に示すように、柱部２に袖壁部３、３が連設されてなる袖壁柱１の耐震補強構造であって、
前記柱部及び袖壁部の表面に、該袖壁部を挟んで互いに対向し、かつ、前記表面から所定間隔をあけて薄肉の補強鋼板４，…が配設され、
前記補強鋼板の袖壁部に面する端部には、該端部が折り曲げられて形成される第一の折り曲げ部４１が設けられ、前記袖壁部の表面には、第一の折り曲げ部を挟持するとともに第一の折り曲げ部に係合する第一の接合治具５が設けられており、これら第一の接合治具と第一の折り曲げ部とが止着材（例えば、ボルトＢ１）により固定され、
前記第一の折り曲げ部は、前記補強鋼板の端部を外側に折り返し角度１８０°となるように折り曲げられて形成されており、
前記第一の接合治具は、前記袖壁部の表面に設けられた固定部５１と、前記第一の折り曲げ部が収納されるとともに係合する凹部５２aを有し、前記固定部とともに前記凹部内に収納された前記第一の折り曲げ部を狭持する押さえ部５２と、を備え、
前記凹部内に前記第一の折り曲げ部が収納された状態における隙間５２bに前記止着材が配置され、前記止着材で止着することにより前記第一の折り曲げ部が前記凹部内で締め付けられて、前記固定部、補強鋼板及び押さえ部が固定され、
さらに、前記柱部及び袖壁部の表面と前記補強鋼板との間に形成された所定間隔の空間に充填材（例えば、無収縮モルタル７）が打設されていることを特徴とする。 In order to solve the above-mentioned problem, the invention of claim 1 is, for example, as shown in FIGS. 1 to 3, and provides seismic reinforcement for a sleeve wall column 1 in which sleeve wall portions 3, 3 are connected to a column portion 2. Structure,
On the surfaces of the pillar part and the sleeve wall part, opposed to each other with the sleeve wall part interposed therebetween, and a thin reinforcing steel plate 4, ... is disposed at a predetermined interval from the surface,
An end portion facing the sleeve wall portion of the reinforcing steel plate is provided with a first bent portion 41 formed by bending the end portion, and a first bent portion is provided on the surface of the sleeve wall portion. A first joining jig 5 that sandwiches and engages with the first bent portion is provided, and the first joining jig and the first bent portion are fixed by a fastening material (for example, bolt B1). Fixed,
The first bent portion is formed by bending the end portion of the reinforcing steel plate outward so that the folding angle is 180 °,
The first joining jig has a fixing portion 51 provided on the surface of the sleeve wall portion, and a concave portion 52a in which the first bent portion is accommodated and engaged, and the concave portion together with the fixing portion. A holding portion 52 that holds the first bent portion housed therein, and
The fastening material is disposed in the gap 52b in a state where the first bent portion is housed in the concave portion, and the first bent portion is fastened in the concave portion by fastening with the fastening material. The fixing part, the reinforcing steel plate and the pressing part are fixed,
Furthermore, a filler (for example, non-shrinking mortar 7) is placed in a space of a predetermined interval formed between the surface of the column part and the sleeve wall part and the reinforcing steel plate.

請求項１の発明によれば、柱部及び袖壁部の表面に、袖壁部を挟んで互いに対向し、かつ、表面から所定間隔をあけて補強鋼板が配設され、袖壁部の表面に設けられた第一の接合治具によって、補強鋼板の第一の折り曲げ部が挟持されるとともに係合し、これら第一の接合治具と第一の折り曲げ部とが止着材により固定されているので、従来の特許文献１のように強化繊維からなる定着アンカーの端部を接着剤等で固着する場合に比して、補強鋼板を柱部及び袖壁部に強固かつ確実に固定することができ、補強性能を格段に向上させることができる。
また、本発明では、高価な強化繊維等を使用しないことから、コストを低減でき、さらに、ＦＲＰ成形板等を随時成形する必要もなく、ハツリ工事も必要ないため、施工面においても優れる。
一方、従来の補強鋼板巻き立て工法に比べて、本発明では溶接しないため、溶接のために必要な補強鋼板の厚さが不要となり、軽量化が可能となり、ハンドリングが容易となる。また、溶接せずに機械加工となることから精度も良く、加えて、止着材を使用した機械式継ぎ手となるので、補強鋼板の材質や厚さを変えることで簡単に剛性を上げることができる。
また、補強鋼板の端部に、該端部を折り曲げて形成した第一の折り曲げ部が設けられているので、例えば専用の継ぎ手部を使用する場合に比べて、工事や現場で簡単に第一の折り曲げ部を形成することができ、施工面に優れるとともにコストの低減を図ることができる。
しかも、第一の折り曲げ部は補強鋼板の端部を折り曲げて形成しているので、袖壁柱の大きさが異なる場合でも、第一の折り曲げ部の折り曲げる長さや折り曲げ回数を適宜変えることによって補強鋼板の長さを変更でき、容易に対応することができる。 According to the invention of claim 1, the reinforcing steel plate is disposed on the surface of the pillar portion and the sleeve wall portion so as to face each other with the sleeve wall portion interposed therebetween and at a predetermined interval from the surface, and the surface of the sleeve wall portion The first bent jig of the reinforcing steel plate is sandwiched and engaged by the first bonding jig provided on the first fixing jig, and the first bent jig and the first bent jig are fixed by the fastening material. Therefore, the reinforcing steel plate is firmly and securely fixed to the column portion and the sleeve wall portion as compared to the case where the end portion of the fixing anchor made of the reinforcing fiber is fixed with an adhesive or the like as in the conventional patent document 1. It is possible to remarkably improve the reinforcing performance.
Further, in the present invention, since no expensive reinforcing fiber or the like is used, the cost can be reduced, and further, it is not necessary to form an FRP molded plate or the like at any time, and no chipping work is required.
On the other hand, as compared with the conventional reinforcing steel sheet winding method, since the present invention does not perform welding, the thickness of the reinforcing steel sheet necessary for welding becomes unnecessary, the weight can be reduced, and handling becomes easy. In addition, since it is machined without welding, the accuracy is high, and in addition, it becomes a mechanical joint using a fastening material, so it is possible to easily increase the rigidity by changing the material and thickness of the reinforcing steel plate. it can.
In addition, since the first bent portion formed by bending the end portion is provided at the end portion of the reinforcing steel plate, for example, compared to the case where a dedicated joint portion is used, for example, the first bent portion can be easily set up at the construction site. The bent portion can be formed, so that the construction surface is excellent and the cost can be reduced.
In addition, since the first bent portion is formed by bending the end of the reinforcing steel plate, even if the sleeve wall column is different in size, the first bent portion is reinforced by appropriately changing the folding length and the number of times of folding. The length of the steel plate can be changed and can be easily handled.

前記薄肉の補強鋼板とは、例えば、厚さ約１ｍｍ以上４ｍｍ以下の鋼板であることが好ましい。   The thin reinforcing steel plate is preferably a steel plate having a thickness of about 1 mm to 4 mm, for example.

請求項２の発明は、例えば、図１及び図２に示すように、請求項１に記載の袖壁柱の耐震補強構造において、
前記止着材は、前記袖壁部を挟んで互いに対向する２つの第一の折り曲げ部及び２つの第一の接合治具を、前記袖壁部を貫通することにより一体に固定していることを特徴とする。 The invention of claim 2 is, for example, as shown in FIGS. 1 and 2, in the seismic reinforcement structure for a sleeve wall pillar according to claim 1,
The fastening material integrally fixes two first bent portions and two first joining jigs facing each other across the sleeve wall portion by penetrating the sleeve wall portion. It is characterized by.

請求項２の発明によれば、止着材は、袖壁部を挟んで互いに対向する２つの第一の折り曲げ部及び２つの第一の接合治具を、袖壁部を貫通することにより一体に固定しているので、互いに対向する補強鋼板どうしを袖壁部に一体に固定することができ、個別に止着材によって袖壁部に固定する場合に比べて、より一層補強性能を高めることができる。また、互いに対向する２つの第一の折り曲げ部及び２つの第一の接合治具を一度に固定できるので、その作業も省略でき好都合である。さらに、第一の折り曲げ部における強度を補強鋼板の母材強度とほぼ同等とすることができる。   According to the invention of claim 2, the fastening material is integrated by penetrating the two first bent portions and the two first joining jigs facing each other across the sleeve wall portion. Since the steel plates facing each other can be integrally fixed to the sleeve wall portion, the reinforcing performance can be further enhanced compared to the case where the steel plate is fixed individually to the sleeve wall portion with a fastening material. Can do. Further, since the two first bent portions and the two first joining jigs facing each other can be fixed at a time, the operation can be omitted conveniently. Furthermore, the strength at the first bent portion can be made substantially equal to the base material strength of the reinforcing steel plate.

請求項３の発明は、例えば、図１及び図２に示すように、請求項１又は２に記載の袖壁柱の耐震補強構造において、
前記補強鋼板は、前記柱部の表面と前記袖壁部の表面とを覆うように複数配設され、
前記補強鋼板の柱部に面する端部には、該端部が折り曲げられて形成される第二の折り曲げ部４２が設けられ、前記柱部の表面には、互いに隣接する補強鋼板の第二の折り曲げ部どうしを挟持するとともに、これら第二の折り曲げ部に係合する第二の接合治具６が設けられており、
前記第二の接合治具と隣接する第二の折り曲げ部とが止着材（例えば、ボルトＢ２）により固定され、
前記第二の折り曲げ部は、前記補強鋼板の端部を内側に折り返し角度１８０°となるように折り曲げられて形成されており、
前記第二の接合治具は、前記柱部の表面に設けられて互いに隣接する補強鋼板の前記第二の折り曲げ部が収納されるとともに係合する凹部６１aを有する固定部６１と、前記固定部とともに前記凹部内に収納された互いに隣接する補強鋼板の前記第二の折り曲げ部を狭持する押さえ部６２と、を備え、
前記凹部内に収納された互いに隣接する前記第二の折り曲げ部の端部間に形成された隙間６１b内に前記止着材が配置され、前記止着材で止着することにより各第二の折り曲げ部の端部が前記凹部内で締め付けられて、前記固定部、補強鋼板及び押さえ部が固定されていることを特徴とする。 The invention of claim 3 is, for example, as shown in FIGS. 1 and 2, in the seismic reinforcement structure for a sleeve wall column according to claim 1 or 2,
A plurality of the reinforcing steel plates are disposed so as to cover the surface of the column portion and the surface of the sleeve wall portion,
A second bent portion 42 formed by bending the end portion is provided at an end portion facing the column portion of the reinforcing steel plate, and a second of the reinforcing steel plates adjacent to each other is provided on the surface of the column portion. And a second joining jig 6 that engages with the second bent portions is provided,
The second bending jig adjacent to the second joining jig is fixed by a fastening material (for example, bolt B2) ,
The second bent portion is formed by bending the end portion of the reinforcing steel plate inward so that the folding angle is 180 °,
The second joining jig includes a fixing portion 61 having a recess 61a that is provided on the surface of the pillar portion and engages and engages with the second bent portions of the reinforcing steel plates adjacent to each other, and the fixing portion. And a holding part 62 for holding the second bent part of the reinforcing steel plates adjacent to each other stored in the concave part, and
The fastening material is disposed in a gap 61b formed between the end portions of the second bent portions adjacent to each other and stored in the recess, and each second is secured by the fastening material. An end portion of the bent portion is fastened in the concave portion, and the fixing portion, the reinforcing steel plate, and the pressing portion are fixed .

請求項３の発明によれば、補強鋼板は、柱部の表面と袖壁部の表面とを覆うように複数配設され、柱部の表面に設けられた第二の接合治具によって、互いに隣接する補強鋼板の第二の折り曲げ部どうしが挟持されるとともに係合されており、第二の接合治具と隣接する第二の折り曲げ部とが止着材により固定されているので、柱部においても補強鋼板を強固かつ確実に固定することができ、補強性能を格段に向上させることができる。
また、補強鋼板は、柱部の表面と袖壁部の表面とを覆うように複数配設されていることから、袖壁柱の大きさが異なる場合でも、補強鋼板の個数を適宜変えることによって容易に対応することができる。
また、補強鋼板の柱部に面する端部には第二の折り曲げ部が設けられているので、第一の折り曲げ部と同様に、第二の折り曲げ部も工事や現場で簡単に形成することができ、施工面に優れるとともに、コストの低減を図ることができる。
さらに、第二の折り曲げ部の折り曲げる長さや折り曲げ回数を適宜変えることによっても補強鋼板の長さを変更できるので、補強柱の大きさが異なる場合でも容易に対応することができる。 According to the invention of claim 3, a plurality of reinforcing steel plates are arranged so as to cover the surface of the column portion and the surface of the sleeve wall portion, and the second joining jig provided on the surface of the column portion mutually Since the second bent portions of the adjacent reinforcing steel plates are sandwiched and engaged, and the second joining jig and the adjacent second bent portion are fixed by the fastening material, the column portion In this case, the reinforcing steel plate can be firmly and securely fixed, and the reinforcing performance can be remarkably improved.
In addition, since a plurality of reinforcing steel plates are disposed so as to cover the surface of the column portion and the surface of the sleeve wall portion, even if the size of the sleeve wall column is different, by appropriately changing the number of reinforcing steel plates It can be easily handled.
In addition, since the second bent portion is provided at the end facing the column portion of the reinforcing steel plate, the second bent portion can be easily formed at the construction site as well as the first bent portion. It is possible to reduce the cost while being excellent in construction.
Furthermore, since the length of the reinforcing steel plate can be changed by appropriately changing the bending length and the number of times of bending of the second bent portion, it is possible to easily cope with the case where the size of the reinforcing column is different.

本発明に係る袖壁柱の耐震補強構造によれば、補強鋼板を柱部及び袖壁部に強固かつ確実に固定することができ、補強性能を格段に向上させることができる。
また、高価な強化繊維等を使用しないことからコストを低減でき、さらに、ハツリ工事も必要ないため施工面においても優れる。
また、溶接しないため軽量化が可能となりハンドリングが容易となる。さらに、補強鋼板の材質や厚さを変えることで簡単に剛性を上げることができる。
また、工事や現場で簡単に第一の折り曲げ部や第二の折り曲げ部を形成することができ、袖壁柱の大きさが異なる場合でも、各折り曲げ部の折り曲げる長さや折り曲げ回数を適宜変えることによって補強鋼板の長さを変更でき、容易に対応することができる。 According to the seismic reinforcement structure for a sleeve wall column according to the present invention, the reinforcing steel plate can be firmly and securely fixed to the column part and the sleeve wall part, and the reinforcing performance can be remarkably improved.
In addition, since no expensive reinforcing fiber or the like is used, the cost can be reduced, and further, there is no need for a scraping work.
Further, since it is not welded, the weight can be reduced and handling becomes easy. Furthermore, the rigidity can be easily increased by changing the material and thickness of the reinforcing steel plate.
In addition, the first and second folds can be easily formed at construction and on-site, and even when the sleeve wall column size is different, the fold length and the number of folds of each fold are changed appropriately. The length of the reinforced steel sheet can be changed by and can be easily handled.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、本発明に係る袖壁柱の耐震補強構造の概略斜視図、図２は、図１における平断面図、図３は、第一の接合治具に第一の折り曲げ部が挟持された状態を示す斜視図である。
図１及び図２に示すように、袖壁柱１は、四角柱状の柱部２と、柱部２の両端面に連設された袖壁部３、３とを備えてなるものである。
柱部２及び袖壁部３、３の表面に、該袖壁部３を挟んで互いに対向するとともに、表面から所定間隔をあけて平断面視略Ｚ型の薄肉の補強鋼板４，…が４つ配設されている。
補強鋼板４は、その厚さが約１ｍｍ以上４ｍｍ以下のものが好ましいが、特に、ハンドリングの面では薄い方が良い。例えば、３．２ｍｍ、２．３ｍｍ、１．６ｍｍの規定のものを使用することができる。また、材質としては、例えばステンレス等で、表面にヘアライン加工やデザイン付きのものが強度が大きく、厚さを薄くできることから好ましい。
また、補強鋼板４の袖壁部３に面する端部には、予め工場において、その端部を外側に１回折り曲げられた第一の折り曲げ部４１が形成されている。すなわち、外側に折り返し角度１８０°となるように折り曲げ加工されている。
一方、補強鋼板４の柱部２に面する端部には、その端部を内側に１回折り曲げられた第二の折り曲げ部４２が形成されている。第二の折り曲げ部４２は、内側に折り返し角度１８０°となるように折り曲げ加工されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a schematic perspective view of a seismic reinforcement structure for a sleeve wall column according to the present invention, FIG. 2 is a plan sectional view of FIG. 1, and FIG. 3 is a diagram showing a first bending portion sandwiched between first joining jigs. FIG.
As shown in FIGS. 1 and 2, the sleeve wall column 1 includes a quadrangular columnar column portion 2 and sleeve wall portions 3 and 3 connected to both end surfaces of the column portion 2.
4 are thin reinforcing steel plates 4,..., Which are opposed to each other on the surfaces of the pillar portion 2 and the sleeve wall portions 3 and 3 with the sleeve wall portion 3 interposed therebetween, and are substantially Z-shaped in plan view with a predetermined interval from the surface. One is arranged.
The reinforcing steel plate 4 preferably has a thickness of about 1 mm or more and 4 mm or less, but it is particularly preferable that the thickness is thin in terms of handling. For example, it is possible to use the ones defined as 3.2 mm, 2.3 mm, and 1.6 mm. Further, as the material, for example, stainless steel or the like with a hairline processing or a design on the surface is preferable because the strength is high and the thickness can be reduced.
In addition, a first bent portion 41 is formed at the end of the reinforcing steel plate 4 facing the sleeve wall 3 in advance at the factory by bending the end one turn outward. That is, it is bent outward so that the folding angle is 180 °.
On the other hand, a second bent portion 42 is formed at the end portion of the reinforcing steel plate 4 facing the column portion 2 by bending the end portion inward by one turn. The second bent portion 42 is bent inward so that the turn-back angle is 180 °.

また、袖壁部３の表面のうち、袖壁部３を挟んで互いに対向する面に、第一の折り曲げ部４１を挟持するとともに係合する第一の接合治具５がそれぞれ設けられている。そして、袖壁部３の一方の面と他方の面とにそれぞれ設けられた２つの第一の接合治具５、５及び２つの補強鋼板４、４の第一の折り曲げ部４１、４１は、１つのボルト（止着材）Ｂ１によって一体に固定されている。
第一の接合治具５は、第一の折り曲げ部４１をその表面で固定する固定部５１と、第一の折り曲げ部４１を覆い、かつ、固定部５１とともに第一の折り曲げ部４１を挟持する押さえ部５２とを備えている。
固定部５１は、袖壁部３の上下方向に沿って長尺で、矩形板状の圧延鋼材であって、ボルトＢ１が挿通される挿通孔５１aが上下に所定間隔に形成されている。
押さえ部５２は、袖壁部３の上下方向に沿って長尺で、平断面視略Ｕ字型の圧延鋼材であって、内面に長尺な平断面視略矩形状の凹部５２aが形成されている。この凹部５２aに、第一の折り曲げ部４１が係合するとともに収納されるようになっている。また、凹部５２aに収納される第一の折り曲げ部４１の端部と凹部５２aを形成する壁面との間には、ボルトＢが挿通可能なように隙間５２bがあいている（図３参照）。
さらに、押さえ部５２には、長手方向に沿ってルーズホール５２cが形成されている。
したがって、袖壁部３を挟んで袖壁部３の一方の面に配置された第一の接合治具５の押さえ部５２のルーズホール５２cから挿通されたボルトＢ１は、固定部５１の挿通孔５１aを介して、袖壁部３を貫通して他方の面に配置された第一の接合治具５の固定部５１の挿通孔５１a、押さえ部５２のルーズホール５２cへと挿通されて、その頭部がナットにより締め付けられることによって、２つの第一の接合治具５、５及び２つの第一の折り曲げ部４１、４１が袖壁部３に固定されている。 Moreover, the 1st joining jig | tool 5 which clamps and engages the 1st bending part 41 is provided in the surface which mutually opposes across the sleeve wall part 3 among the surfaces of the sleeve wall part 3, respectively. . And the first bent portions 41, 41 of the two first joining jigs 5, 5 and the two reinforcing steel plates 4, 4 respectively provided on one surface and the other surface of the sleeve wall portion 3, It is integrally fixed by one bolt (fastening material) B1.
The first joining jig 5 covers the first bent portion 41 with the fixing portion 51 that fixes the first bent portion 41 on the surface thereof, and sandwiches the first bent portion 41 together with the fixing portion 51. And a pressing portion 52.
The fixing part 51 is a long and rectangular rolled steel material along the vertical direction of the sleeve wall part 3, and insertion holes 51 a through which the bolts B <b> 1 are inserted are formed at predetermined intervals in the vertical direction.
The holding part 52 is a rolled steel material that is long along the vertical direction of the sleeve wall part 3 and is substantially U-shaped in plan view, and has a concave part 52a that is substantially rectangular in plan view. ing. The first bent portion 41 is engaged and stored in the recess 52a. Further, a gap 52b is provided between the end of the first bent portion 41 housed in the recess 52a and the wall surface forming the recess 52a so that the bolt B can be inserted (see FIG. 3).
Further, a loose hole 52c is formed in the pressing portion 52 along the longitudinal direction.
Therefore, the bolt B1 inserted from the loose hole 52c of the pressing portion 52 of the first joining jig 5 arranged on one surface of the sleeve wall portion 3 with the sleeve wall portion 3 interposed therebetween is inserted into the insertion hole of the fixing portion 51. 51a is inserted through the sleeve wall portion 3 into the insertion hole 51a of the fixing portion 51 of the first joining jig 5 arranged on the other surface and the loose hole 52c of the holding portion 52, The two first joining jigs 5 and 5 and the two first bent portions 41 and 41 are fixed to the sleeve wall portion 3 by tightening the head portion with a nut.

また、柱部２の表面のうち、袖壁部３を挟んで互いに対向する面に、隣接する２つの補強鋼板４、４の第二の折り曲げ部４２、４２どうしを挟持するとともに係合する第二の接合治具６が設けられている。
第二の接合治具６は、第二の折り曲げ部４２、４２をその表面で固定する固定部６１と、第二の折り曲げ部４２、４２を覆い、かつ、固定部６１とともに第二の折り曲げ部４２、４２を挟持する押さえ部６２とを備えている。
固定部６１は、柱部２の上下方向に沿って長尺で、平断面視略Ｕ字型の圧延鋼材であって、表面に長尺な平断面視略矩形状の凹部６１aが形成されている。この凹部６１aに、互いに隣接する補強鋼板４、４の第二の折り曲げ部４２、４２が係合するとともに収納されるようになっている。凹部６１a内に収納された二つの第二の折り曲げ部４２、４２の端部間には、ボルトＢ２が挿通可能なように隙間６１bがあいている。
押さえ部６２は、柱部２の上下方向に沿って長尺で、矩形板状の圧延鋼材であって、ボルトＢ２が挿通される挿通孔（図示略）が上下に所定間隔に形成されている。
したがって、押さえ部６２の挿通孔を介してボルトＢ２が第二の折り曲げ部４２、４２の端部間に形成された隙間６１b内に配置され、固定部６１の凹部６１aで締め付けられることによって固定部６１、押さえ部６２、第二の折り曲げ部４２、４２が固定されている。 Further, the second bent portions 42 and 42 of the two adjacent reinforcing steel plates 4 and 4 are sandwiched and engaged with the surfaces of the column portion 2 facing each other with the sleeve wall portion 3 interposed therebetween. Two joining jigs 6 are provided.
The second joining jig 6 includes a fixed portion 61 that fixes the second bent portions 42 and 42 on the surface thereof, and covers the second bent portions 42 and 42, and the second bent portion together with the fixed portion 61. 42, and a pressing portion 62 that holds the 42 therebetween.
The fixed portion 61 is a rolled steel material that is long along the vertical direction of the column portion 2 and is substantially U-shaped in plan view, and has a concave portion 61a that is substantially rectangular in plan view. Yes. The second bent portions 42 and 42 of the reinforcing steel plates 4 and 4 adjacent to each other are engaged and stored in the recess 61a. A gap 61b is provided between the ends of the two second bent portions 42 and 42 accommodated in the recess 61a so that the bolt B2 can be inserted.
The pressing part 62 is a long and rectangular plate-shaped rolled steel material along the vertical direction of the column part 2, and insertion holes (not shown) through which the bolts B <b> 2 are inserted are formed at predetermined intervals in the vertical direction. .
Therefore, the bolt B <b> 2 is disposed in the gap 61 b formed between the end portions of the second bent portions 42 and 42 through the insertion hole of the pressing portion 62, and is fastened by the concave portion 61 a of the fixing portion 61. 61, the holding | maintenance part 62, and the 2nd bending parts 42 and 42 are being fixed.

なお、第一の接合治具５の固定部５１及び第二の接合治具６の固定部６１は、袖壁部３や柱部２に打ち込まれたメカニカルアンカーやホールインアンカーに、ボルト挿通用の孔を介してボルト（図示略）が挿通されて締結されることにより袖壁部３や柱部２の表面に取り付けられている。   The fixing part 51 of the first joining jig 5 and the fixing part 61 of the second joining jig 6 are used for inserting bolts into mechanical anchors or hole-in anchors driven into the sleeve wall part 3 or the column part 2. Bolts (not shown) are inserted through the holes and fastened to be attached to the surfaces of the sleeve wall portion 3 and the column portion 2.

また、柱部２及び袖壁部３の表面と補強鋼板４，…の内面との間に形成された所定間隔の空間には、無収縮モルタル７等の充填材が充填されている。   Moreover, the space of the predetermined space | interval formed between the surface of the pillar part 2 and the sleeve wall part 3, and the inner surface of the reinforcement steel plate 4, ... is filled with fillers, such as the non-shrink mortar 7. FIG.

次に、本発明に係る袖壁柱１の耐震補強構造を施工する耐震補強方法について図１〜図３を参照して説明する。
まず、予め、袖壁柱１の表面の脆弱部分を除去し、掃除機又は塗れウエス等を用いて付着強度を低下させるような物質や汚れを取り除き、下地処理を施しておく。
そして、袖壁柱１の袖壁部３、３及び柱部２に対して、それぞれ第一の接合治具５及び第二の接合治具６の取付位置を決めるための墨出しを行う。
さらに、袖壁柱３、３及び柱部２に第一の接合治具５及び第二の接合治具６を取り付けるためのメカニカルアンカーを墨出しした位置に打ち込む。そして、袖壁柱３、３の表面に４つ配置し、柱部２の表面に２つ配置したうえで、第一の接合治具５及び第二の接合治具６の各固定部５１、６１に形成されたボルト挿通用の孔を介してメカニカルアンカー内にボルトを挿通し締結することにより第一の接合治具５及び第二の接合治具６の各固定部５１、６１を取り付ける。 Next, the seismic reinforcement method for constructing the seismic reinforcement structure of the sleeve wall column 1 according to the present invention will be described with reference to FIGS.
First, a fragile portion on the surface of the sleeve wall column 1 is removed in advance, and a substance or dirt that lowers the adhesion strength is removed using a vacuum cleaner or a wet cloth, and a base treatment is performed.
Then, marking is performed to determine the attachment positions of the first joining jig 5 and the second joining jig 6 on the sleeve wall portions 3 and 3 and the column portion 2 of the sleeve wall column 1, respectively.
Furthermore, the mechanical anchor for attaching the 1st joining jig | tool 5 and the 2nd joining jig | tool 6 to the sleeve wall pillars 3 and 3 and the pillar part 2 is driven in the position which marked. And after arrange | positioning four on the surface of the sleeve wall pillars 3 and 3 and arrange | positioning two on the surface of the pillar part 2, each fixing | fixed part 51 of the 1st joining jig 5 and the 2nd joining jig 6, The fixing portions 51 and 61 of the first joining jig 5 and the second joining jig 6 are attached by inserting and fastening bolts into the mechanical anchors through the bolt insertion holes formed in 61.

次いで、柱部２の四角部、すなわち、各角部から袖壁部３、３に跨るようにして袖壁柱１の表面から所定間隔をあけて４つの補強鋼板４，…を配置する。このとき、補強鋼板４の第一の折り曲げ部４１を第一の接合治具５の固定部５１の表面に配置させる。
そして、第一の折り曲げ部４１の表面に押さえ部５２を配置し、押さえ部５２のルーズホール５２cからボルトＢ１を挿通させて固定部５１の挿通孔５１aを介して、さらに袖壁部３を貫通させ、袖壁部３を挟んで対向する他方の固定部５１の挿通孔５１a、押さえ部５２のルーズホール５２cへと挿通させる。その後、ボルトＢ１の頭部をナットで締め付けることにより、袖壁部３の一方の面と他方の面とにそれぞれ設けられた２つの第一の接合治具５、５及び２つの補強鋼板４、４の第一の折り曲げ部４１、４１を一体に固定する。 Next, four reinforcing steel plates 4 are arranged at predetermined intervals from the surface of the sleeve wall column 1 so as to straddle the square portions of the column portion 2, that is, from the respective corner portions to the sleeve wall portions 3 and 3. At this time, the first bent portion 41 of the reinforcing steel plate 4 is arranged on the surface of the fixing portion 51 of the first joining jig 5.
Then, the pressing portion 52 is disposed on the surface of the first bent portion 41, and the bolt B <b> 1 is inserted from the loose hole 52 c of the pressing portion 52, and further penetrates the sleeve wall portion 3 through the insertion hole 51 a of the fixing portion 51. Then, it is inserted into the insertion hole 51a of the other fixing portion 51 and the loose hole 52c of the pressing portion 52 which are opposed to each other with the sleeve wall portion 3 interposed therebetween. After that, by tightening the head of the bolt B1 with a nut, the two first joining jigs 5 and 5 and the two reinforcing steel plates 4 respectively provided on one surface and the other surface of the sleeve wall portion 3, Four first bent portions 41, 41 are fixed together.

一方、互いに隣接する補強鋼板４、４の第二の折り曲げ部４２、４２どうしを、第二の接合治具６の固定部６１の凹部６１aに係合させるとともに、凹部６１a内に収納する。
そして、第二の折り曲げ部４２、４２の表面に押さえ部６２を配置し、押さえ部６２の挿通孔を介してボルトＢ２を挿通し、第二の折り曲げ部４２、４２の端部間の隙間６１b内に配置するとともに凹部６１aで締め付けて固定する。 On the other hand, the second bent portions 42 and 42 of the reinforcing steel plates 4 and 4 adjacent to each other are engaged with the concave portion 61a of the fixing portion 61 of the second joining jig 6 and stored in the concave portion 61a.
Then, the holding part 62 is arranged on the surface of the second bent parts 42, 42, the bolt B2 is inserted through the insertion hole of the holding part 62, and the gap 61b between the end parts of the second bent parts 42, 42 is inserted. It is arranged inside and tightened and fixed by the recess 61a.

このようにして補強鋼板４，…の第一の折り曲げ部４１及び第二の折り曲げ部４２を袖壁部３、３及び柱部２に固定した後、補強鋼板４，…の下部に無収縮モルタル７の注入の際に必要となる型枠を取り付け、無収縮モルタル７の付着面、すなわち、袖壁柱１の表面及び補強鋼板４，…の内面に硬化不良を防ぐための水湿しを行う。なお、このときの余剰水は型枠の外に排出されるように型枠に排水口をあけておく。
次いで、排水口を塞いで、予め練っていた高強度の無収縮モルタル７をモルタルポンプを使用して袖壁柱１の上部の隙間まで注入する。注入の際には、木槌又はプラスチックハンマー等を使用して軽く叩きながら四隅が均等となるように上部まで注入し養生を行う。
さらに、袖壁柱１の最表面に耐火被覆が必要な場合には、例えば石膏ボード等、適当な仕様とする。 In this way, after the first bent portion 41 and the second bent portion 42 of the reinforcing steel plates 4,... Are fixed to the sleeve wall portions 3, 3 and the column portion 2, the non-shrink mortar is formed below the reinforcing steel plates 4,. 7 is attached, and water dampening is performed on the adhesion surface of the non-shrink mortar 7, that is, on the surface of the sleeve wall column 1 and the inner surface of the reinforcing steel plate 4,. . In addition, a drain outlet is opened in the mold so that excess water at this time is discharged out of the mold.
Next, the drainage port is closed, and a high-strength, non-shrinking mortar 7 kneaded in advance is poured into the upper gap of the sleeve wall column 1 using a mortar pump. When injecting, use a mallet or plastic hammer, etc. to lightly tap and inject to the top so that the four corners are even.
Furthermore, when a fireproof coating is required on the outermost surface of the sleeve wall column 1, for example, a plaster board or the like is set to an appropriate specification.

以上、本発明の実施の形態の袖壁柱１の耐震補強構造によれば、柱部２及び袖壁部３、３の表面に、袖壁部３を挟んで互いに対向し、かつ、表面から所定間隔をあけて補強鋼板４，…が配設され、袖壁部３の表面に設けられた第一の接合治具５によって、補強鋼板４の第一の折り曲げ部４１が挟持されるとともに係合し、また、袖壁部３を挟んで互いに対向する２つの第一の接合治具５、５と２つの第一の折り曲げ部４１、４１とが、ボルトＢ１が袖壁部３を貫通することによって一体に固定されているので、補強鋼板４を袖壁部３に強固かつ確実に固定することができ、補強性能を格段に向上させることができる。さらに、ボルトＢ１により一度に固定できることから、作業も省略できて好都合である。また、第一の折り曲げ部４１における強度を補強鋼板４の母材強度とほぼ同等とすることができる。
さらに、本発明では高価な強化繊維等を使用しないことから、コストを低減でき、ハツリ工事も必要ないため施工面においても優れる。
さらに、本発明では溶接しないため、溶接のために必要な補強鋼板４の厚さが不要となり軽量化が可能となり、ハンドリングが容易となる。また、溶接せずに機械加工となることから精度も良く、加えて、ボルトＢ１を使用した機械式継ぎ手となるので、補強鋼板４の材質や厚さを変えることで簡単に剛性を上げることができる。
また、補強鋼板４の端部に設けられた第一の折り曲げ部４１や第二の折り曲げ部４２は、工事や現場で簡単に形成することができ、袖壁柱１の大きさが異なる場合でも、第一の折り曲げ部４１や第二の折り曲げ部４２の折り曲げる長さや回数を適宜変えることによって補強鋼板４の長さを変更でき、容易に対応することができる。 As described above, according to the seismic reinforcement structure of the sleeve wall column 1 according to the embodiment of the present invention, the surfaces of the column portion 2 and the sleeve wall portions 3 and 3 are opposed to each other with the sleeve wall portion 3 interposed therebetween, and from the surface. Reinforcing steel plates 4,... Are arranged at a predetermined interval, and the first bent portion 41 of the reinforcing steel plate 4 is sandwiched and engaged by the first joining jig 5 provided on the surface of the sleeve wall portion 3. In addition, the two first joining jigs 5 and 5 and the two first bent portions 41 and 41 facing each other with the sleeve wall 3 interposed therebetween, the bolt B1 penetrates the sleeve wall 3. Therefore, the reinforcing steel plate 4 can be firmly and securely fixed to the sleeve wall portion 3, and the reinforcing performance can be greatly improved. Furthermore, since it can be fixed at once by the bolt B1, it is convenient to omit the work. Further, the strength at the first bent portion 41 can be made substantially equal to the strength of the base material of the reinforcing steel plate 4.
Furthermore, since expensive reinforcing fibers or the like are not used in the present invention, the cost can be reduced, and the construction work is also excellent because no chiseling work is required.
Furthermore, since welding is not performed in the present invention, the thickness of the reinforcing steel plate 4 necessary for welding is not required, and the weight can be reduced, and handling is facilitated. In addition, since it is machined without welding, the accuracy is high, and in addition, since it becomes a mechanical joint using the bolt B1, rigidity can be easily increased by changing the material and thickness of the reinforcing steel plate 4. it can.
Moreover, the 1st bending part 41 provided in the edge part of the reinforced steel plate 4 and the 2nd bending part 42 can be easily formed in construction or the field, and even when the size of the sleeve wall column 1 is different. The length of the reinforcing steel plate 4 can be changed by appropriately changing the length and the number of times the first bent portion 41 and the second bent portion 42 are bent, and can be easily handled.

また、柱部２の表面に設けられた第二の接合治具６によって、互いに隣接する補強鋼板４、４の第二の折り曲げ部４２、４２どうしが挟持されるとともに係合し、第二の接合治具６と第二の折り曲げ部４２、４２とがボルトＢ２により固定されているので、柱部２においても補強鋼板４、４を強固かつ確実に固定することができ、補強性能を格段に向上させることができる。   Further, the second bent jigs 42 and 42 of the reinforcing steel plates 4 and 4 adjacent to each other are sandwiched and engaged by the second joining jig 6 provided on the surface of the column part 2, and the second Since the joining jig 6 and the second bent portions 42 and 42 are fixed by the bolts B2, the reinforcing steel plates 4 and 4 can be firmly and securely fixed also in the column portion 2, and the reinforcing performance is remarkably improved. Can be improved.

なお、本発明は、上記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で適宜変更可能である。
例えば、袖壁柱１の表面と補強鋼板４，…の内面との間に充填する充填材として、上記実施の形態では無収縮モルタル７を挙げたが、一般のモルタル、レジンモルタル、セメントミルクやセメントペースト等を充填材として使用しても良い。
また、補強鋼板４，…は袖壁柱１の四隅に４つ設けたが、さらに多数設けても良い。この場合、各補強鋼板４，…はより軽量化されるのでハンドリングが極めて容易となる。また、袖壁柱１の袖壁部３を挟んで互いに対向するように２つ設けるようにしても良い。この場合には、補強鋼板４、４の両端部が袖壁部３に面することとなるので、第二の折り曲げ部４２を形成する必要がなく、第一の折り曲げ部４１のみとなる。
また、図１に示す補強鋼板４，…の端部は、柱部２近傍の袖壁部３の表面に固定されているが、例えば図４に示すように、補強鋼板４，…の端部を袖壁部３側にさらに延長させて、適当な間隔に上述した第一の接合治具５や第二の接合治具６を用いて、壁に固定しても構わない。このように補強鋼板４を袖壁部３側へ延長させることにより、耐震性をより向上させることができる。 In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can change suitably.
For example, as the filler to be filled between the surface of the sleeve wall column 1 and the inner surface of the reinforcing steel plates 4..., The non-shrink mortar 7 is mentioned in the above embodiment, but general mortar, resin mortar, cement milk, Cement paste or the like may be used as a filler.
Further, four reinforcing steel plates 4,... Are provided at the four corners of the sleeve wall column 1, but a larger number may be provided. In this case, since each reinforced steel sheet 4 is further reduced in weight, handling becomes extremely easy. Two sleeve wall columns 1 may be provided so as to face each other across the sleeve wall portion 3. In this case, since both ends of the reinforcing steel plates 4 and 4 face the sleeve wall portion 3, it is not necessary to form the second bent portion 42, and only the first bent portion 41 is provided.
1 is fixed to the surface of the sleeve wall portion 3 in the vicinity of the column portion 2, for example, as shown in FIG. 4, the end portions of the reinforcing steel plates 4,. May be further extended to the sleeve wall 3 side and fixed to the wall by using the first joining jig 5 or the second joining jig 6 described above at an appropriate interval. Thus, by extending the reinforcing steel plate 4 toward the sleeve wall 3 side, the earthquake resistance can be further improved.

また、本発明では、柱部２は四角柱状としたが、多角柱状や円柱状としても良い。さらに、上記実施の形態の袖壁柱１は、柱部２の両端面に袖壁柱３、３が連設されてなるものとしたが、柱部２の一方の端面のみに袖壁部３を連設したものとしても構わない。
さらに、第一の折り曲げ部４１は、外側に１８０°折り曲げるとしたが、第二の折り曲げ部４２と同様に内側に１８０°折り曲げるようにしても良い。この場合、第一の接合治具５の固定部５１及び押さえ部５２を、第二の接合治具６の固定部６１及び押さえ部６２と同様の形状としたものを使用する。反対に、第二の折り曲げ部４２に関しても、第一の折り曲げ部４１と同様に外側に１８０°折り曲げるようにしても良く、これに伴って第二の接合治具６の形状も適宜変更すれば良い。
また、袖壁柱１の大きさに応じて、補強鋼板４の端部を数回折り曲げ角度１８０°となるように折り曲げて補強鋼板４の長さを適宜変更しても構わない。 In the present invention, the column portion 2 is a quadrangular column shape, but may be a polygonal column shape or a cylindrical shape. Furthermore, the sleeve wall column 1 of the above embodiment is configured such that the sleeve wall columns 3 and 3 are connected to both end surfaces of the column portion 2, but the sleeve wall portion 3 is formed only on one end surface of the column portion 2. It does not matter if they are connected in series.
Further, the first bent portion 41 is bent 180 ° outward, but may be bent 180 ° inward in the same manner as the second bent portion 42. In this case, the fixing part 51 and the pressing part 52 of the first joining jig 5 are formed in the same shape as the fixing part 61 and the pressing part 62 of the second joining jig 6. On the contrary, the second bent portion 42 may be bent 180 ° outward as in the case of the first bent portion 41, and if the shape of the second bonding jig 6 is changed accordingly, the second bent portion 42 may be bent. good.
Further, according to the size of the sleeve wall column 1, the length of the reinforcing steel plate 4 may be appropriately changed by bending the end portion of the reinforcing steel plate 4 several times so that the bending angle is 180 °.

本発明の実施の形態を示すためのもので、袖壁柱の耐震補強構造の概略斜視図である。It is for demonstrating embodiment of this invention, and is a schematic perspective view of the seismic reinforcement structure of a sleeve wall pillar. 同、図１における平断面図である。FIG. 2 is a plan sectional view of FIG. 同、第一の接合治具に第一の折り曲げ部が挟持された状態を示す斜視図である。It is a perspective view which shows the state by which the 1st bending part was clamped by the 1st joining jig. 本発明の実施の形態の変形例を示すためのもので、袖壁柱の耐震補強構造の概略斜視図である。It is for demonstrating the modification of embodiment of this invention, and is a schematic perspective view of the seismic reinforcement structure of a sleeve wall pillar.

符号の説明Explanation of symbols

１ 袖壁柱
２ 柱部
３ 袖壁部
４ 補強鋼板
５ 第一の接合治具
６ 第二の接合治具
７ 無収縮モルタル（充填材）
４１ 第一の折り曲げ部
４２ 第二の折り曲げ部
Ｂ１、Ｂ２ ボルト（止着材）






DESCRIPTION OF SYMBOLS 1 Sleeve wall pillar 2 Column part 3 Sleeve wall part 4 Reinforced steel plate 5 First joining jig 6 Second joining jig 7 Non-shrink mortar (filler)
41 1st bending part 42 2nd bending part B1, B2 Bolt (fastening material)






Claims (3)

柱部に袖壁部が連設されてなる袖壁柱の耐震補強構造であって、
前記柱部及び袖壁部の表面に、該袖壁部を挟んで互いに対向し、かつ、前記表面から所定間隔をあけて薄肉の補強鋼板が配設され、
前記補強鋼板の袖壁部に面する端部には、該端部が折り曲げられて形成される第一の折り曲げ部が設けられ、前記袖壁部の表面には、第一の折り曲げ部を挟持するとともに第一の折り曲げ部に係合する第一の接合治具が設けられており、これら第一の接合治具と第一の折り曲げ部とが止着材により固定され、
前記第一の折り曲げ部は、前記補強鋼板の端部を外側に折り返し角度１８０°となるように折り曲げられて形成されており、
前記第一の接合治具は、前記袖壁部の表面に設けられた固定部と、前記第一の折り曲げ部が収納されるとともに係合する凹部を有し、前記固定部とともに前記凹部内に収納された前記第一の折り曲げ部を狭持する押さえ部と、を備え、
前記凹部内に前記第一の折り曲げ部が収納された状態における隙間に前記止着材が配置され、前記止着材で止着することにより前記第一の折り曲げ部が前記凹部内で締め付けられて、前記固定部、補強鋼板及び押さえ部が固定され、
さらに、前記柱部及び袖壁部の表面と前記補強鋼板との間に形成された所定間隔の空間に充填材が打設されていることを特徴とする袖壁柱の耐震補強構造。 A seismic reinforcement structure for a sleeve wall column in which a sleeve wall portion is connected to the column portion,
On the surfaces of the column part and the sleeve wall part, opposed to each other across the sleeve wall part, and a thin reinforcing steel plate is disposed at a predetermined interval from the surface,
The end portion of the reinforcing steel plate facing the sleeve wall portion is provided with a first bent portion formed by bending the end portion, and the first bent portion is sandwiched on the surface of the sleeve wall portion. And a first joining jig that engages with the first bent portion is provided, and the first joining jig and the first bent portion are fixed by a fastening material,
The first bent portion is formed by bending the end portion of the reinforcing steel plate outward so that the folding angle is 180 °,
The first joining jig has a fixing portion provided on the surface of the sleeve wall portion, and a concave portion that engages with the first bent portion, and is disposed in the concave portion together with the fixing portion. A holding portion that holds the first bent portion stored therein, and
The fastening material is disposed in a gap in a state where the first bent portion is housed in the concave portion, and the first bent portion is fastened in the concave portion by fastening with the fastening material. The fixing part, the reinforcing steel plate and the pressing part are fixed,
Furthermore, the seismic reinforcement structure of a sleeve wall column, wherein a filler is provided in a space of a predetermined interval formed between the surface of the column part and the sleeve wall part and the reinforcing steel plate. 前記止着材は、前記袖壁部を挟んで互いに対向する２つの第一の折り曲げ部及び２つの第一の接合治具を、前記袖壁部を貫通することにより一体に固定していることを特徴とする請求項１に記載の袖壁柱の耐震補強構造。   The fastening material integrally fixes two first bent portions and two first joining jigs facing each other across the sleeve wall portion by penetrating the sleeve wall portion. The seismic reinforcement structure for a sleeve wall column according to claim 1. 前記補強鋼板は、前記柱部の表面と前記袖壁部の表面とを覆うように複数配設され、
前記補強鋼板の柱部に面する端部には、該端部が折り曲げられて形成される第二の折り曲げ部が設けられ、前記柱部の表面には、互いに隣接する補強鋼板の第二の折り曲げ部どうしを挟持するとともに、これら第二の折り曲げ部に係合する第二の接合治具が設けられており、前記第二の接合治具と隣接する第二の折り曲げ部とが止着材により固定され、
前記第二の折り曲げ部は、前記補強鋼板の端部を内側に折り返し角度１８０°となるように折り曲げられて形成されており、
前記第二の接合治具は、前記柱部の表面に設けられて互いに隣接する補強鋼板の前記第二の折り曲げ部が収納されるとともに係合する凹部を有する固定部と、前記固定部とともに前記凹部内に収納された互いに隣接する補強鋼板の前記第二の折り曲げ部の端部間の隙間内に前記止着材が配置され、前記止着材で止着することにより各第二の折り曲げ部の端部が前記凹部内で締め付けられて、前記固定部、補強鋼板及び押さえ部が固定されていることを特徴とする請求項１又は２に記載の袖壁柱の耐震補強構造。 A plurality of the reinforcing steel plates are disposed so as to cover the surface of the column portion and the surface of the sleeve wall portion,
A second bent portion formed by bending the end portion is provided at an end portion facing the column portion of the reinforcing steel plate, and a second bent portion of the reinforcing steel plate adjacent to each other is provided on the surface of the column portion. A second joining jig that sandwiches the bent portions and engages with the second bent portions is provided, and the second bent jig adjacent to the second bent jig is a fastening material. Fixed by
The second bent portion is formed by bending the end portion of the reinforcing steel plate inward so that the folding angle is 180 °,
The second joining jig is provided on the surface of the pillar portion, and includes a fixing portion having a recessed portion that engages with the second bent portion of the reinforcing steel plates adjacent to each other, and the fixing portion and the fixing portion. The fastening material is disposed in the gap between the ends of the second bent portions of the reinforcing steel plates adjacent to each other stored in the recess, and each second bent portion is secured by the fastening material. 3. The seismic reinforcement structure for a sleeve wall column according to claim 1 , wherein an end portion of the sleeve wall column is tightened in the concave portion, and the fixing portion, the reinforcing steel plate, and the pressing portion are fixed .
JP2004275185A 2004-09-22 2004-09-22 Seismic reinforcement structure for sleeve wall columns Expired - Fee Related JP4344300B2 (en)

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