JP6121169B2 - Steel column straightening method - Google Patents

Steel column straightening method Download PDF

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JP6121169B2
JP6121169B2 JP2013006153A JP2013006153A JP6121169B2 JP 6121169 B2 JP6121169 B2 JP 6121169B2 JP 2013006153 A JP2013006153 A JP 2013006153A JP 2013006153 A JP2013006153 A JP 2013006153A JP 6121169 B2 JP6121169 B2 JP 6121169B2
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steel column
wire
foundation
steel
column
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JP2014136915A (en
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良隆 齊藤
良隆 齊藤
佑登 足立
佑登 足立
貴也 榎本
貴也 榎本
繁樹 椙山
繁樹 椙山
信也 浜田
信也 浜田
裕明 大野
裕明 大野
輝士 山崎
輝士 山崎
貴志 一瀬
貴志 一瀬
内田　晴久
晴久 内田
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Toda Corp
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Description

本発明は、建物の鉄骨建方時における鉄骨柱歪み直し工法に関するものである。   The present invention relates to a steel column post-repair method for building a steel frame.

従来、鉄骨建方時の建方により生じた柱・梁等の倒れ、曲がり、水平度などの歪みを基準内に納めるために、建入直しを行っている。この鉄骨建方時の建入直しの方法としては、従来例１として、鉄骨柱に予め溶接手段で固着された孔あきの山形鋼からなるピースにワイヤロープを掛止させ、そのワイヤロープの一方を柱下に掛け渡し、前記ワイヤロープ間に設けたレバーブロック(登録商標)等を用いて、ワイヤロープの緊張状態を調節して、鉄骨柱の歪直しを行っているものである。   Conventionally, re-installation has been carried out in order to keep distortions such as falling, bending, and horizontality of columns and beams caused by the construction of steel frames within the standard. As a method of rebuilding the steel frame, as in Conventional Example 1, a wire rope is hung on a piece made of perforated angle steel that is fixed to a steel column in advance by welding means, and one of the wire ropes is attached. The steel column is distorted by adjusting the tension state of the wire rope by using a lever block (registered trademark) provided between the wire ropes and hung under the column.

また、従来例２として、特許文献１に記載されているように、前記ピースを用いること無く手間を掛けずに鉄骨建方時の歪直しを施工できるように、鉄骨柱のフランジへの取付けと索条の取付けが少なくとも可能な歪直し治具を、相対する鉄骨柱の対角位置のフランジにそれぞれ取り付け、前記歪直し治具間に緊張器を介して索条を係合し、鉄骨柱の建入れの計測結果に基づいて、前記緊張器で索条の張力を調節して建入れの矯正をする方法が知られている。   In addition, as described in Patent Document 1, as described in Patent Document 1, the steel column can be attached to the flange so that it can be rectified during the construction of the steel frame without using the piece and without taking time and effort. A straightening jig capable of at least attaching a rope is attached to each of the diagonal flanges of the steel column, and the rope is engaged between the straightening jigs via a tensioner. Based on the measurement result of the erection, a method of correcting the erection by adjusting the tension of the rope with the tension device is known.

特開平０７−２９２９９０号公報JP 07-292990 A

しかし、従来の鉄骨柱歪み直し工法により、例えば、基礎部分から鉄骨柱を建入れする場合（０（ゼロ）節と称する、以下同じ）における鉄骨柱の歪直しでは、図５（Ａ），（Ｂ）に示すように、基礎コンクリートを打設して鉄骨柱１を建入れし、仮梁８を設けて建入直しを行い、基礎梁４用の躯体配筋と型枠を設けた後、再度、前記鉄骨柱１の建て入れ調整し、基礎梁コンクリートを打設して、鉄骨柱１のワイヤ３を一部埋め殺しにして、その後、前記ワイヤ３を切断し撤去する方法となる。   However, with the conventional steel column rectification method, for example, when the steel column is erected from the foundation (referred to as 0 (zero) section, the same applies hereinafter), the steel column is distorted as shown in FIGS. B) After placing the concrete foundation and placing the steel column 1 as shown in B), providing the temporary beam 8 and rebuilding it, and providing the frame reinforcement and the formwork for the foundation beam 4, Again, the construction of the steel column 1 is adjusted, the foundation beam concrete is placed, the wire 3 of the steel column 1 is partially buried, and then the wire 3 is cut and removed.

かかる建入直しにおいては、以下のような課題がある。即ち、図５（Ａ）に示すように、基礎梁４と平行に架設されるワイヤ３なので、配筋された鉄筋とワイヤ３とが干渉して、作業がやりにくくなる。また、ワイヤ３の一部を埋めたまま切断するので、ワイヤ３の転用ができないことになる。   Such rebuilding has the following problems. That is, as shown in FIG. 5A, since the wire 3 is laid in parallel with the foundation beam 4, the reinforcing bars and the wire 3 interfere with each other, and the work becomes difficult. Further, since the wire 3 is cut while being partially filled, the wire 3 cannot be diverted.

前記ワイヤ３を緊張調整するレバーブロック(登録商標)７ａの取り付け位置が高いので、作業に危険が付きまとい、作業能率が悪くなる。そして、鉄骨柱１に設けられるブレースの腕とワイヤとが干渉したり、鉄骨柱１間のスパンが長かったり配置がランダムだったりすると、前記仮梁８を設けることができない場合もある。本発明に係る鉄骨柱歪み直し工法は、このような課題を解決するために提案されたものである。   Since the attachment position of the lever block (registered trademark) 7a for adjusting the tension of the wire 3 is high, there is a danger in the work and the work efficiency is deteriorated. If the brace arm provided on the steel column 1 interferes with the wire, the span between the steel columns 1 is long, or the arrangement is random, the temporary beam 8 may not be provided. The steel column straightening method according to the present invention has been proposed in order to solve such problems.

本発明に係る鉄骨柱歪み直し工法の上記課題を解決して目的を達成するための要旨は、
鉄骨柱の基礎部における建入れ時に施工する前記鉄骨柱の歪み直しにおいて、鉄骨柱の頂部に一端部を掛止するワイヤの他端部を、前記鉄骨柱に接続される基礎梁を避けてベタ基礎部に設けた掛止部に掛止させて、前記ワイヤの緊張力を調節し、前記鉄骨柱の頂部に着脱自在に取り付けられるとともに、ワイヤの一端部を掛止するための治具であって、前記鉄骨柱の頂部に取り付けられるプレートに前記ワイヤの一端部を掛止する掛止プレートが基礎梁を避けるように所望の位置に突設されてなる建入直し用治具を有することである。 The gist for achieving the object by solving the above-described problems of the steel column repairing method according to the present invention is as follows:
In re-distortion of the steel column to be constructed at the time of erection in the foundation of the steel column, the other end of the wire that hooks one end on the top of the steel column is solid, avoiding the foundation beam connected to the steel column. It is a jig that is hooked on a hooking portion provided on a foundation portion, adjusts the tension of the wire, is detachably attached to the top of the steel column , and hooks one end of the wire. A hook plate for hooking one end of the wire to a plate attached to the top of the steel column has a re-installation jig protruding from a desired position so as to avoid the foundation beam. is there.

本発明に係る鉄骨柱歪み直し工法の上記課題を解決して目的を達成するための要旨は、
鉄骨柱の基礎部における建入れ時に施工する前記鉄骨柱の歪み直しにおいて、鉄骨柱の頂部に一端部を掛止するワイヤの他端部を、前記鉄骨柱に接続される基礎梁を避けてベタ基礎部に設けた掛止部に掛止させて、前記ワイヤの緊張力を調節し、ワイヤには、建入れする鉄骨柱に近い方とベタ基礎部に設けた掛止部に近い方との２箇所の位置に、それぞれターンバックルが介装されていることである。 The gist for achieving the object by solving the above-described problems of the steel column repairing method according to the present invention is as follows:
In re-distortion of the steel column to be constructed at the time of erection in the foundation of the steel column, the other end of the wire that hooks one end on the top of the steel column is solid, avoiding the foundation beam connected to the steel column. The tension of the wire is adjusted by hooking on the latching portion provided on the foundation , and the wire has a direction closer to the steel column to be erected and a direction closer to the latching portion provided on the solid foundation. That is, turnbuckles are interposed at two positions.

本発明の鉄骨柱歪み直し工法によれば、ワイヤが基礎梁を避けて張設されているので、干渉することが避けられ、歪直し作業が容易となる。ワイヤにターンバックルを２箇所に配置したことで、建入直しの作業において基礎梁の配筋等の工事進捗に合わせて、作業者が下段のターンバックルで建入直しを行った後に、上段のターンバックルにより再度の建入直しができるようになり、作業者の体勢が高所でも不安定にならず効率的に建入直しができる。
また、建入れ柱の頂部の建入直し用治具と、ワイヤ及びターンバックルとを転用することができるので、コスト低減できると言う優れた効果を奏するものである。 According to the steel column straightening method of the present invention, since the wire is stretched avoiding the foundation beam, interference is avoided and the straightening work is facilitated. By arranging the turnbuckles in two places on the wire, the worker rebuilt the upper beam with the lower turnbuckle according to the progress of the construction of the reinforcement of the foundation beam, etc. The turnbuckle makes it possible to rebuild the building, and the worker's posture can be restored efficiently without being unstable even at high places.
Moreover, since the rebuilding jig, the wire, and the turnbuckle at the top of the erection column can be diverted, an excellent effect that the cost can be reduced is achieved.

本発明に係る鉄骨柱歪み直し工法の概要を示す平面図（Ａ）、側面図（Ｂ）である。It is the top view (A) and side view (B) which show the outline | summary of the steel column distortion correction method which concerns on this invention. 本発明に係る鉄骨柱歪み直し工法の実施例を示す正面図である。It is a front view which shows the Example of the steel frame column straightening method concerning this invention. 本発明に係る鉄骨柱歪み直し工法の実施例を示す側面図である。It is a side view which shows the Example of the steel-frame column straightening method concerning this invention. 同本発明の鉄骨柱歪み直し工法の実施例に係る一部を拡大して示す柱頭部の側面図（Ａ）、同側面図のＡ−Ａ線に沿った断面図及びＢ視図（Ｂ）である。The side view (A) of the column head which expands and shows a part which concerns on the Example of the steel column rectification method of this invention, sectional drawing along AA line of the same side view, and B view (B) It is. 従来例に係る鉄骨柱歪み直し工法の実施例を示す平面図（Ａ）、側断面図（Ｂ）である。It is the top view (A) and side sectional view (B) which show the Example of the steel-column postdistortion repair method concerning a prior art example.

本発明に係る鉄骨柱歪み直し工法は、図１に示すように、基礎部の鉄骨柱１を単独で建てる場合、その建入れにおいて精度確保のために行われる歪直し作業で、ワイヤを基礎梁から逃がした位置に張設して建入直しを行うものである。   As shown in FIG. 1, in the steel column straightening method according to the present invention, when the steel column 1 of the foundation is singly constructed, the wire is used for the foundation beam in the straightening work performed for ensuring accuracy in the erection. It will be installed at the position where it escaped from and will be rebuilt.

本発明に係る鉄骨柱歪み直し工法は、図１乃至図３に示すように、０節の鉄骨柱１の基礎部２における建入れ時に施工する、前記鉄骨柱１の歪み直しにおいて、ワイヤ３の張設方向を、鉄骨柱１に直交する基礎梁４から避けるようにしている。   As shown in FIG. 1 to FIG. 3, the steel column straightening method according to the present invention is performed at the time of erection in the foundation portion 2 of the steel column 1 of 0 node. The stretching direction is avoided from the foundation beam 4 orthogonal to the steel column 1.

即ち、鉄骨柱１の頂部１ａに一端部３ａを掛止するワイヤ３の他端部３ｂを、前記鉄骨柱１に接続される基礎梁４を避けてベタ基礎部５に設けた掛止部６に掛止させて、前記ワイヤ３の緊張力を調節する鉄骨柱歪み直し工法である。   In other words, the other end 3 b of the wire 3 that hooks the one end 3 a on the top 1 a of the steel column 1 is provided on the solid base 5 while avoiding the foundation beam 4 connected to the steel column 1. It is a steel column rectification method that adjusts the tension of the wire 3 by being hooked onto the wire 3.

前記ワイヤ３は、前記基礎梁４を避ける具体的な方法として、建入れした鉄骨柱１に直交して構築される基礎梁４に対して、図１（Ａ）に示すように、平面視で前記鉄骨柱１を中心に回転角度θ＝４５度で、回転させた位置に張設されているのである。この角度は、勿論厳密な角度に規制されるものでは無く、要は、基礎梁４を十分に避けている状態の回転角度θであれば良い。   As a specific method for avoiding the foundation beam 4, the wire 3 is shown in a plan view as shown in FIG. 1 (A) with respect to the foundation beam 4 constructed orthogonal to the installed steel column 1. The steel pillar 1 is stretched around the steel column 1 at a rotation angle θ = 45 degrees. Of course, this angle is not restricted to a strict angle, and it is only necessary that the rotation angle θ is in a state where the foundation beam 4 is sufficiently avoided.

前記掛止部６は、図２に示すように、所用範囲のベタ基礎部５を形成することで、掛止部６の下部を前記ベタ基礎部５に埋設させて固着するものである。掛止部６の上部に掛止孔が用意されていて、ワイヤ３の他端部３ｂが掛着される。   As shown in FIG. 2, the latching portion 6 is formed by forming a solid base portion 5 in a desired range, and the lower portion of the latching portion 6 is embedded in the solid base portion 5 and fixed. A hooking hole is prepared in the upper part of the hooking part 6, and the other end part 3 b of the wire 3 is hooked.

前記ワイヤ３には、建入れする鉄骨柱１に近い方とベタ基礎部５に設けた掛止部６に近い方との２箇所の位置に、それぞれターンバックル７，７が介装されている。   The wire 3 is provided with turnbuckles 7 and 7 at two positions, one closer to the steel column 1 to be erected and the other closer to the latching portion 6 provided on the solid base portion 5, respectively. .

図２乃至図３に示すように、前記２箇所のターンバックル７，７があることで、基礎コンクリートの打設後に、鉄骨柱１の建て入れ直しをする時には、作業を邪魔する鉄筋などが少ないので、下側のターンバックル７で調整し、その後、基礎梁４用の配筋や型枠を設けた後は、上側のターンバックル７で再度の建て入れ調整を高所で行うことができる。これにより、作業者の建て入れ調整作業がやりやすくなり、作業能率が向上する。   As shown in FIGS. 2 to 3, since there are the two turnbuckles 7 and 7, there are few reinforcing bars or the like that disturb the work when the steel column 1 is rebuilt after the foundation concrete is placed. Then, after adjusting with the lower turnbuckle 7 and then providing the reinforcement for the foundation beam 4 and the formwork, the upper turnbuckle 7 can be used to adjust the installation again at a high place. As a result, it is easier for the worker to perform the adjustment work and the work efficiency is improved.

前記ワイヤ３は、鉄骨柱１と掛止部６との間において張設され且つ着脱自在であって、ターンバックル７，７を含めて全部転用可能である。従来の工法ではワイヤ３の一部が、基礎梁４用のコンクリートに埋め殺しとなるが、これに対して、本発明に係る鉄骨柱歪み直し工法では、基礎梁４を避けて配設される前記ワイヤ３が、埋め殺しとなることが無いからである。   The wire 3 is stretched between the steel column 1 and the latching portion 6 and is detachable, and the entire wire 3 including the turnbuckles 7 and 7 can be diverted. In the conventional construction method, a part of the wire 3 is buried in the concrete for the foundation beam 4, whereas in the steel column repairing method according to the present invention, it is arranged avoiding the foundation beam 4. This is because the wire 3 is not buried.

前記ワイヤ３は、図４（ａ），（Ｂ）に示すように、鉄骨柱１の上部に設けられる建入直し用治具１０に掛止される。この建入直し用治具１０は、建入れされる鉄骨柱１の頭部に設置されるものであり、Ｌ型プレート１０ａ，１０ｂで矩形状に組み立てられて、鉄骨柱１に固定される。なお、鉄骨柱１は、その断面形状が矩形状の柱に限らず、円形状の鋼管柱等であってもよい。前記建入直し用治具１０は、鉄骨柱１の頂部において、上下方向で位置決めされれば、水平方向の回り止めがなくても、複数箇所に張設されるワイヤ３で水平方向の位置決めがされるからである。   As shown in FIGS. 4A and 4B, the wire 3 is hooked on a repositioning jig 10 provided on the upper part of the steel column 1. The rebuilding jig 10 is installed at the head of the steel column 1 to be installed, and is assembled into a rectangular shape by the L-shaped plates 10 a and 10 b and fixed to the steel column 1. The steel column 1 is not limited to a column having a rectangular cross-sectional shape, and may be a circular steel pipe column or the like. If the repositioning jig 10 is positioned in the vertical direction at the top of the steel column 1, the horizontal positioning can be performed by the wires 3 stretched at a plurality of locations even if there is no horizontal detent. Because it is done.

なお、この建入直し用治具１０の上に、架設プレート９が固着されているので、これを利用して、下げ止めワイヤ９ａによって、前記建入直し治具１０の下がり止めの措置をとるようにしても良い。Ｌ型プレート１０ａ，１０ｂに設けられる孔は、前記下げ止めワイヤ９ａを掛止させる場合の仮孔である。   In addition, since the installation plate 9 is fixed on the rebuilding jig 10, the lowering wire 9a is used to take a measure for preventing the lowering of the rebuilding jig 10. You may do it. The holes provided in the L-shaped plates 10a and 10b are temporary holes when the lowering wire 9a is hooked.

前記建入直し用治具１０には、平面視して斜め４５度に突出する掛止用プレート１０ｃが設けられている。この掛止用プレート１０ｃには、図４（Ｂ）に示すように、掛止孔１０ｄが貫通して設けられている。この掛止孔１０ｄに、ワイヤ３の一端部３ａが掛着される。この建入直し用治具１０は、ボルト等で組み立てられるので、解体が容易であり、他の鉄骨柱１に転用が可能である。   The rebuilding jig 10 is provided with a latching plate 10c that protrudes at an angle of 45 degrees in plan view. As shown in FIG. 4B, the latching plate 10c is provided with a latching hole 10d. One end 3a of the wire 3 is hooked on the hooking hole 10d. Since the rebuilding jig 10 is assembled with bolts or the like, it can be easily disassembled and can be diverted to other steel columns 1.

以上のような、鉄骨歪み直し工法に必要な歪直しユニットである建入直し用治具１０、ターンバックル７，７を有したワイヤ３、一部埋め殺しの掛止部６によって、建入れした０節における鉄骨柱１の歪直しを行う。   As described above, the erection was performed by the erection jig 10 which is a rectification unit necessary for the steel rectification method, the wire 3 having the turnbuckles 7 and 7, and the latching part 6 which is partially buried. The distortion of the steel column 1 at node 0 is performed.

前記建入直し用治具１０とワイヤ３とを、予め鉄骨柱１に取り付けておく。基礎部２に基礎コンクリートを打設して、０節の鉄骨建方を行う。そして、鉄骨柱１の歪みを直すべく、建入直しを行う。前記ワイヤ３を、図１に示すように、基礎梁４に対して４５度の回転角度θで４箇所に張設する。そして、前記ワイヤ３の下側のターンバックル７で調整し、鉄骨柱１を鉛直方向において基準内に納める。   The rebuilding jig 10 and the wire 3 are attached to the steel column 1 in advance. Place foundation concrete on the foundation part 2 and perform steel construction of 0 nodes. Then, in order to correct the distortion of the steel column 1, rebuilding is performed. As shown in FIG. 1, the wire 3 is stretched at four locations with a rotation angle θ of 45 degrees with respect to the foundation beam 4. And it adjusts with the turnbuckle 7 below the said wire 3, and the steel column 1 is stored in a reference | standard in a perpendicular direction.

基礎梁４を構築するための躯体配筋と型枠の設置を行う。そして、再度、鉄骨柱１の建入れ調整を、前記４箇所のワイヤ３の上側のターンバックル７で調整して行う。前記鉄骨柱１を鉛直方向において基準内に納める。そして、前記型枠内にコンクリートを打設して、基礎梁４を構築する。   The frame reinforcement and the formwork for constructing the foundation beam 4 are installed. And again, the adjustment of the installation of the steel column 1 is performed by adjusting the turnbuckles 7 on the upper side of the four wires 3. The said steel column 1 is stored in a reference | standard in a perpendicular direction. And concrete is cast in the said formwork, and the foundation beam 4 is constructed | assembled.

その後、前記建入直し用治具１０，ターンバックル７，７を有したワイヤ３のユニットを撤去して、他の鉄骨柱１に転用する。一部がベタ基礎部５に埋設された掛止部６はそのまま存置とする。   Thereafter, the unit of the wire 3 having the re-installation jig 10 and the turnbuckles 7 and 7 is removed and diverted to another steel column 1. The retaining portion 6 partially embedded in the solid base portion 5 is left as it is.

本発明に係る鉄骨柱歪み直し工法は、鉄骨柱に限らず、多様な部材を立設させる際の、鉛直方向において基準内に納める工法に広く適用できるものである。   The steel column rectification method according to the present invention is not limited to a steel column, and can be widely applied to a method of placing various members within a standard in a vertical direction.

１ 鉄骨柱、
２ 基礎部、
３ ワイヤ、 ３ａ 一端部、
３ｂ 他端部、
４ 基礎梁、
５ ベタ基礎部、
６ 掛止部、
７ ターンバックル、
７ａ レバーブロック(登録商標)、
８ 仮梁、
９ 仮設プレート、 ９ａ 下げ止めワイヤ、
１０ 建入直し用治具、
１０ａ，１０ｂ Ｌ型プレート、
１０ｃ 掛止用プレート、 １０ｄ 掛止孔。 1 steel column,
2 foundation,
3 wires, 3a one end,
3b the other end,
4 Foundation beam,
5 solid foundation,
6 Hook,
7 Turnbuckle,
7a Lever block (registered trademark),
8 temporary beams,
9 Temporary plate, 9a Lowering wire,
10 Reinstallation jig,
10a, 10b L-shaped plate,
10c latch plate, 10d latch hole.

Claims (2)

鉄骨柱の基礎部における建入れ時に施工する前記鉄骨柱の歪み直しにおいて、鉄骨柱の頂部に一端部を掛止するワイヤの他端部を、前記鉄骨柱に接続される基礎梁を避けてベタ基礎部に設けた掛止部に掛止させて、前記ワイヤの緊張力を調節し、前記鉄骨柱の頂部に着脱自在に取り付けられるとともに、ワイヤの一端部を掛止するための治具であって、前記鉄骨柱の頂部に取り付けられるプレートに前記ワイヤの一端部を掛止する掛止プレートが基礎梁を避けるように所望の位置に突設されてなる建入直し用治具を有すること、を特徴とする鉄骨柱歪み直し工法。 In re-distortion of the steel column to be constructed at the time of erection in the foundation of the steel column, the other end of the wire that hooks one end on the top of the steel column is solid, avoiding the foundation beam connected to the steel column. It is a jig that is hooked on a hooking portion provided on a foundation portion, adjusts the tension of the wire, is detachably attached to the top of the steel column , and hooks one end of the wire. And a repositioning jig in which a hooking plate for hooking one end of the wire to a plate attached to the top of the steel column protrudes at a desired position so as to avoid a foundation beam, A steel column straightening method characterized by 鉄骨柱の基礎部における建入れ時に施工する前記鉄骨柱の歪み直しにおいて、鉄骨柱の頂部に一端部を掛止するワイヤの他端部を、前記鉄骨柱に接続される基礎梁を避けてベタ基礎部に設けた掛止部に掛止させて、前記ワイヤの緊張力を調節し、ワイヤには、建入れする鉄骨柱に近い方とベタ基礎部に設けた掛止部に近い方との２箇所の位置に、それぞれターンバックルが介装されていること、を特徴とする鉄骨柱歪み直し工法。 In re-distortion of the steel column to be constructed at the time of erection in the foundation of the steel column, the other end of the wire that hooks one end on the top of the steel column is solid, avoiding the foundation beam connected to the steel column. The tension of the wire is adjusted by hooking on the latching portion provided on the foundation , and the wire has a direction closer to the steel column to be erected and a direction closer to the latching portion provided on the solid foundation. A steel column straightening method characterized in that turnbuckles are interposed at two positions, respectively.
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