JP2012241400A - Reinforcement cage and build-up method of reinforcement cage - Google Patents

Reinforcement cage and build-up method of reinforcement cage Download PDF

Info

Publication number
JP2012241400A
JP2012241400A JP2011111689A JP2011111689A JP2012241400A JP 2012241400 A JP2012241400 A JP 2012241400A JP 2011111689 A JP2011111689 A JP 2011111689A JP 2011111689 A JP2011111689 A JP 2011111689A JP 2012241400 A JP2012241400 A JP 2012241400A
Authority
JP
Japan
Prior art keywords
support member
support
rod
reinforcing bar
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2011111689A
Other languages
Japanese (ja)
Other versions
JP5785775B2 (en
Inventor
Masayoshi Watanabe
正嘉 渡辺
Tsukasa Monai
司 毛内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YOSHINAGA Manufacturing
Taisei Corp
Yoshinaga Manufacturing Co Ltd
Original Assignee
YOSHINAGA Manufacturing
Taisei Corp
Yoshinaga Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YOSHINAGA Manufacturing, Taisei Corp, Yoshinaga Manufacturing Co Ltd filed Critical YOSHINAGA Manufacturing
Priority to JP2011111689A priority Critical patent/JP5785775B2/en
Publication of JP2012241400A publication Critical patent/JP2012241400A/en
Application granted granted Critical
Publication of JP5785775B2 publication Critical patent/JP5785775B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Bulkheads Adapted To Foundation Construction (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement cage of which the body can be wholly built up underground while utilizing a build-up device.SOLUTION: A reinforcement cage A comprises a reinforcement cage body A1 which is formed by combining a plurality of longitudinal reinforcements 1, 1, ... and a plurality of lateral reinforcements 2, 2, ... in a lattice shape, and a temporary section A3 which is formed by extending a part of the plurality of longitudinal reinforcements 1, 1, .. upward. The reinforcement cage body A1 includes a plurality of first auxiliary members 3, 3, ... which are disposed at vertical intervals, and the temporary section A3 includes a plurality of second auxiliary members 4, 4, ... which are disposed at vertical intervals. All the first auxiliary members 3 and the second auxiliary members 4 are laterally framed over at least two longitudinal reinforcements 1.

Description

本発明は、鉄筋籠および鉄筋籠の建込方法に関する。   The present invention relates to a reinforcing bar rod and a method for installing the reinforcing bar rod.

杭や地中連続壁の鉄筋籠を掘削穴に建て込む方法として、建込装置を利用した方法が知られている(特許文献1,2参照)。特許文献1の建込装置は、左右に並べた二個一組のセンタホールジャッキを備えるものであり、特許文献2の建込装置は、上下に並べた二個一組の作動ピンを備えるものである。鉄筋籠には、建込装置に係止するための補助部材(特許文献1の係止部材、特許文献2の補強材)が装着されている。   As a method for building a pile or an underground continuous wall reinforcing bar into a drilling hole, a method using an erection device is known (see Patent Documents 1 and 2). The erection device of Patent Document 1 includes a set of two center hole jacks arranged on the left and right, and the erection device of Patent Document 2 includes a pair of operation pins arranged one above the other. It is. An auxiliary member (a locking member of Patent Document 1 and a reinforcing material of Patent Document 2) for locking to the building device is attached to the reinforcing bar.

特開平1−299915号公報Japanese Patent Laid-Open No. 1-299915 特許第4097242号公報Japanese Patent No. 4097242

特許文献1,2の鉄筋籠では、補助部材が鉄筋籠本体(縦筋と横筋とを格子状に配筋してなる部分)に装着されているので、建込装置だけでは、鉄筋籠本体の全体を地中に建て込むことができない。   In the reinforcing bar rods of Patent Documents 1 and 2, since the auxiliary member is mounted on the reinforcing bar rod main body (the portion formed by arranging the vertical and horizontal bars in a lattice shape) The whole cannot be built underground.

このような観点から、本発明は、建込装置を利用しながらも、鉄筋籠本体の全体を地中に建て込むことが可能な鉄筋籠および鉄筋籠の建込方法を提供することを課題とする。   From such a viewpoint, it is an object of the present invention to provide a reinforcing bar rod and a method of building the reinforcing bar rod that can be used to embed the entirety of the main body of the reinforcing bar rod while using the building device. To do.

上記課題を解決する本発明に係る鉄筋籠は、複数本の縦筋と複数本の横筋とを格子状に組み合わせて形成した鉄筋籠本体と、前記複数本の縦筋のうちの一部を上方向に延長して形成した仮設部と、を備える鉄筋籠であって、前記鉄筋籠本体は、上下方向に間隔をあけて配置された複数の第一補助部材を有し、前記仮設部は、上下方向に間隔をあけて配置された複数の第二補助部材を有し、前記各第一補助部材および前記各第二補助部材は、いずれも、少なくとも二本の前記縦筋に横架されていることを特徴とする。   The reinforcing bar rod according to the present invention that solves the above problems is a reinforcing bar rod main body formed by combining a plurality of vertical bars and a plurality of horizontal bars in a lattice pattern, and a part of the plurality of vertical bars is the upper side. A reinforcing bar rod provided extending in a direction, wherein the reinforcing bar rod main body has a plurality of first auxiliary members arranged at intervals in the vertical direction, the temporary portion, A plurality of second auxiliary members arranged at intervals in the vertical direction, each of the first auxiliary members and each of the second auxiliary members being horizontally mounted on at least two of the vertical bars; It is characterized by being.

建込装置を利用して鉄筋籠を建て込む場合には、例えば、鉄筋籠を建込装置の第一支持部材に載置した状態で前記第一支持部材を下降させるステップと、鉄筋籠を建込装置の第二支持部材に載置した状態で前記第一支持部材を上昇させるステップとを繰り返すことになるが、本発明に係る鉄筋籠によれば、建込装置で支持可能な補助部材が仮設部にも設けられているので、仮設部に対しても、前記したステップを行うことが可能となる。なお、本発明に係る鉄筋籠は、例えば、場所打ちコンクリート杭や地中連続壁に用いることができる。   When the reinforcing bar is built using the building device, for example, the step of lowering the first support member while the reinforcing bar is placed on the first supporting member of the building device, The step of raising the first support member while being placed on the second support member of the setting device is repeated, but according to the reinforcing bar rod according to the present invention, the auxiliary member that can be supported by the building device is Since it is provided also in the temporary part, it becomes possible to perform the above-mentioned step also to the temporary part. The reinforcing bar according to the present invention can be used for, for example, cast-in-place concrete piles or underground continuous walls.

すなわち、第一支持部材と第二支持部材とを具備した建込装置によって本発明に係る鉄筋籠を掘削穴に建て込む際には、一の前記第一補助部材を前記第一支持部材に載置した状態で前記第一支持部材を下降させるステップと、他の前記第一補助部材を前記第二支持部材に載置した状態で前記第一支持部材を上昇させるステップとを繰り返すことで、前記鉄筋籠本体を掘削穴内に挿入した後、一の前記第二補助部材を前記第一支持部材に載置した状態で前記第一支持部材を下降させるステップと、他の前記第二補助部材を前記第二支持部材に載置した状態で前記第一支持部材を上昇させるステップとを繰り返すことで、前記仮設部を掘削穴内に挿入する、という建込方法を実行することができるので、鉄筋籠本体の全体を地中に位置させることが可能となる。   That is, when the reinforcing bar according to the present invention is built in the excavation hole by the building device including the first support member and the second support member, the first auxiliary member is mounted on the first support member. Repeating the step of lowering the first support member in the placed state and the step of raising the first support member in a state where the other first auxiliary member is placed on the second support member, After inserting the reinforcing bar main body into the excavation hole, the step of lowering the first support member with one second auxiliary member placed on the first support member, and the other second auxiliary member By repeating the step of raising the first support member while being placed on the second support member, it is possible to execute the erection method of inserting the temporary part into the excavation hole. To place the whole in the ground It can become.

本発明によれば、建込装置を利用しながらも、鉄筋籠本体の全体を地中に建て込むことが可能となる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to embed the whole reinforcing bar main body in the ground, utilizing an erection device.

(a)は本発明の実施形態に係る鉄筋籠を示す側面図、(b)および(c)は(a)の部分拡大図である。(A) is a side view which shows the reinforcing bar rod which concerns on embodiment of this invention, (b) and (c) are the elements on larger scale of (a). (a)は図1の(b)のX1−X1矢視図、(b)は図1の(c)のX2−X2矢視図である。(A) is the X1-X1 arrow view of (b) of FIG. 1, (b) is the X2-X2 arrow view of (c) of FIG. 本発明の実施形態に係る建込装置を示す側面図である。It is a side view which shows the built-in apparatus which concerns on embodiment of this invention. 図3のY1−Y1矢視図である。It is a Y1-Y1 arrow line view of FIG. 昇降支持部および固定支持部を示す側面図である。It is a side view which shows a raising / lowering support part and a fixed support part. (a)は第一支持部材の前部を示す拡大上面図、(b)は(a)の側面図である。(A) is an enlarged top view which shows the front part of a 1st support member, (b) is a side view of (a). 図4のY2−Y2矢視図であって、(a)は昇降支持部を下降させた状態を示す図、(b)は昇降支持部を上昇させた状態を示す図である。FIG. 5 is a view taken in the direction of arrows Y2-Y2 in FIG. 4, (a) is a diagram illustrating a state where the lifting support unit is lowered, and (b) is a diagram illustrating a state where the lifting support unit is lifted. (a)および(b)は、鉄筋籠の建込方法を示す側面図である。(A) And (b) is a side view which shows the construction method of a reinforcing bar rod. (a)および(b)は、図8の(b)に続く手順を示す側面図である。(A) And (b) is a side view which shows the procedure following (b) of FIG. (a)〜(d)は、昇降支持部および固定支持部の動作例を示す側面図である。(A)-(d) is a side view which shows the operation example of a raising / lowering support part and a fixed support part.

本発明の実施形態に係る鉄筋籠Aは、場所打ちコンクリート杭に用いられるものであり、図1の(a)に示すように、鉄筋籠本体A1と、接合部A2と、仮設部A3とを備えている。鉄筋籠Aは、建込装置B,B(図3参照)を利用して掘削穴に建て込まれる。   The reinforcing bar A according to the embodiment of the present invention is used for a cast-in-place concrete pile. As shown in FIG. 1A, a reinforcing bar main body A1, a joint A2, and a temporary part A3 are provided. I have. Reinforcing bar A is built into the excavation hole using the erection devices B and B (see FIG. 3).

鉄筋籠本体A1は、図1の(c)に示すように、複数本の縦筋1,1,…と複数本の横筋2,2,…とを格子状に組み合わせて形成した部位であり、場所打ちコンクリート杭の本体部分に埋設される。鉄筋籠本体A1は、縦筋1および横筋2に加えて、上下方向に間隔をあけて配置された複数の第一補助部材3,3,…を備えている。   As shown in FIG. 1C, the reinforcing bar body A1 is a part formed by combining a plurality of vertical bars 1, 1,... And a plurality of horizontal bars 2, 2,. It is buried in the body part of cast-in-place concrete pile. In addition to the vertical bars 1 and the horizontal bars 2, the reinforcing bar main body A1 includes a plurality of first auxiliary members 3, 3,.

縦筋1は、杭主筋であり、鉄筋継手(図示略)を介して連結された複数の異形鉄筋からなる。   The vertical bar 1 is a pile main bar, and is composed of a plurality of deformed bars connected through reinforcing bar joints (not shown).

横筋2は、いわゆるフープ筋であり、図2の(b)に示すように、総ての縦筋1,1,…を取り囲むように配筋されている。本実施形態の横筋2は、縦筋1,1,…の外周側に配筋されている。   The horizontal line 2 is a so-called hoop line, and is arranged so as to surround all the vertical lines 1, 1,... As shown in FIG. The horizontal bars 2 of the present embodiment are arranged on the outer peripheral side of the vertical bars 1, 1,.

第一補助部材3は、リング状に成形されており、総ての縦筋1,1,…に横架されている。本実施形態の第一補助部材3は、縦筋1,1,…の内周側に配置されており、鉄筋組立時においては、段取り筋として利用される。第一補助部材3の材質、断面形状、縦筋1への固定方法等に制限はないが、本実施形態では、曲げ加工を施した山形鋼を第一補助部材3とし、縦筋1に溶接している。なお、本実施形態では、第一補助部材3を非構造部材(コンクリートの補強に寄与しない部材)とみなして、縦筋1および横筋2の配筋設計を行っている。   The first auxiliary member 3 is formed in a ring shape and is laid across all the vertical bars 1, 1,. The 1st auxiliary member 3 of this embodiment is arrange | positioned at the inner peripheral side of the vertical reinforcement 1, 1, ..., and is utilized as a setup reinforcement at the time of a reinforcing bar assembly. Although there is no restriction | limiting in the material of 1st auxiliary member 3, cross-sectional shape, the fixing method to the vertical reinforcement 1, etc. In this embodiment, the angle-shaped steel which gave the bending process is made into the 1st auxiliary member 3, and it welds to the vertical reinforcement 1. doing. In the present embodiment, the first auxiliary member 3 is regarded as a non-structural member (a member that does not contribute to the reinforcement of concrete), and the vertical bar 1 and horizontal bar 2 are arranged.

接合部A2は、図1の(c)に示すように、総ての縦筋1,1,…を上方向に延長して形成した部位であり、図示せぬコンクリート基礎に埋設される。接合部A2は、縦筋1に加えて、第一補助部材3を備えているが、横筋2を備えていない。第一補助部材3は、鉄筋籠本体A1のものと同様である。   As shown in FIG. 1 (c), the joint A2 is a part formed by extending all the vertical bars 1, 1,... Upward, and is embedded in a concrete foundation (not shown). The joint A2 includes the first auxiliary member 3 in addition to the vertical bars 1, but does not include the horizontal bars 2. The first auxiliary member 3 is the same as that of the reinforcing bar body A1.

仮設部A3は、図1の(b)に示すように、複数本の縦筋1,1,…のうちの一部を上方向に延長して形成した部位であり、コンクリート基礎の構築後に撤去される。仮設部A3は、縦筋1に加えて、上下方向に間隔をあけて配置された複数の第二補助部材4,4,…を備えているが、横筋2を備えていない。   As shown in FIG. 1 (b), the temporary part A3 is a part formed by extending a part of the plurality of vertical bars 1, 1,... Upward and removed after the construction of the concrete foundation. Is done. The temporary portion A3 includes a plurality of second auxiliary members 4, 4,... Arranged at intervals in the vertical direction in addition to the vertical bars 1, but does not include the horizontal bars 2.

本実施形態では、鉄筋籠Aの中心を挟んで対向する二つの領域L,Rのそれぞれにおいて、複数(本実施形態においては五本)の縦筋1,1,…が延長されるとともに、複数の第二補助部材4,4,…が配置されている。図2の(a)に示すように,左右の領域L,Rは、いずれも平面視円弧状となり、二つの領域L,Rの間には、縦筋1が延長されない領域M,Mが存在している。   In the present embodiment, in each of the two regions L and R facing each other across the center of the reinforcing bar A, a plurality of (in the present embodiment, five) vertical bars 1, 1,. Are arranged. As shown in FIG. 2A, the left and right regions L and R are both arcuate in plan view, and there are regions M and M where the vertical stripe 1 is not extended between the two regions L and R. doing.

第二補助部材4は、平面視円弧状に成形されており、少なくとも二本の縦筋1,1,…に横架されている。第二補助部材4の断面形状、平面形状、本数および設置高さは、左右の領域L,Rで同じである。本実施形態の第二補助部材4は、縦筋1,1,…の内周側に配置されており、鉄筋組立時においては、段取り筋として利用される。第二補助部材4の材質、断面形状、縦筋1への固定方法等に制限はないが、本実施形態では、曲げ加工を施した山形鋼を第二補助部材4とし、各縦筋1と溶接している。なお、本実施形態では、領域Lあるいは領域Rにおける縦筋1,1の間隔を、鉄筋籠本体A1における縦筋1,1の間隔と同一にしているが、領域L,Rにおける縦筋1,1の間隔が鉄筋籠本体A1における縦筋1,1の間隔よりも大きくなるよう、延長すべき縦筋1を間引いてもよい。   The second auxiliary member 4 is formed in an arc shape in plan view and is laid across at least two vertical bars 1, 1,. The cross-sectional shape, planar shape, number, and installation height of the second auxiliary member 4 are the same in the left and right regions L and R. The 2nd auxiliary member 4 of this embodiment is arrange | positioned at the inner peripheral side of the vertical bars 1, 1, ..., and is utilized as a setup bar at the time of a reinforcing bar assembly. Although there is no restriction | limiting in the material of the 2nd auxiliary member 4, cross-sectional shape, the fixing method to the vertical reinforcement 1, etc., in this embodiment, the angled steel which performed the bending process is made into the 2nd auxiliary member 4, and each vertical reinforcement 1 and Welding. In this embodiment, the interval between the vertical bars 1 and 1 in the region L or the region R is the same as the interval between the vertical bars 1 and 1 in the reinforcing bar body A1, but the vertical bars 1 and 1 in the regions L and R are the same. The longitudinal bars 1 to be extended may be thinned out so that the interval of 1 is larger than the distance between the longitudinal bars 1 and 1 in the reinforcing bar body A1.

次に、図3乃至図7を参照して、建込装置Bの構成を説明する。
図3および図4に示すように、建込装置Bは、掘削穴Hの開口縁部に設置されるものであり、支持架構B1と、昇降支持部B2と、固定支持部B3と、昇降機構B4とを備えている。各建込装置Bは、昇降支持部B2および固定支持部B3を上下に配置してなるユニットを二つ備えるとともに、両ユニットに共通の支持架構B1および昇降機構B4を備えている。なお、本実施形態では、二つの建込装置B,Bを対向させているが、建込装置Bの位置や数は適宜変更してもよい。
Next, the configuration of the erection device B will be described with reference to FIGS.
As shown in FIGS. 3 and 4, the erection device B is installed at the opening edge of the excavation hole H, and includes a support frame B1, an elevating support unit B2, a fixed support unit B3, and an elevating mechanism. B4. Each built-in device B includes two units formed by vertically arranging a lifting support portion B2 and a fixed support portion B3, and includes a support frame B1 and a lifting mechanism B4 common to both units. In addition, in this embodiment, although the two construction apparatuses B and B are made to oppose, you may change the position and number of the construction apparatuses B suitably.

支持架構B1は、図4に示すように、敷桁11、支持桁12、ガイドレール13、支柱14、繋ぎ部材15などを備えている。   As shown in FIG. 4, the support frame B <b> 1 includes a floor girder 11, a support girder 12, a guide rail 13, a column 14, a connecting member 15, and the like.

敷桁11は、掘削穴Hを挟んで両側に配置されている。一対の敷桁11,11は、互いに平行となるように配置されていて、掘削穴Hを挟んで対向している。敷桁11,11は、二本の支持桁12,12によって連結されている。各敷桁11は、他の建込装置Bに向かって延出していて、他の建込装置Bの敷桁11にボルト接合されている。敷桁11は、鋼材(例えば、H型鋼、I形鋼、溝形鋼、角形鋼管など)からなる。   The siding girders 11 are arranged on both sides of the excavation hole H. The pair of span girders 11 and 11 are arranged so as to be parallel to each other, and face each other with the excavation hole H interposed therebetween. The floor girders 11 and 11 are connected by two support girders 12 and 12. Each span girder 11 extends toward another erection device B and is bolted to the spar 11 of the other erection device B. The spar 11 is made of a steel material (for example, H-shaped steel, I-shaped steel, groove-shaped steel, rectangular steel pipe, etc.).

支持桁12は、敷桁11と交差する方向に配置されており、支持桁12の端部は、敷桁11に接合されている。二本の支持桁12,12は、敷桁11の長手方向に間隔をあけて並設されており、互いに平行である。一方の支持桁12は、掘削穴Hに面するように配置されており、他方の支持桁12は、一方の支持桁12を挟んで掘削穴Hの反対側に配置されている。支持桁12は、鋼材からなる。   The support girder 12 is arranged in a direction crossing the spar 11 and the end of the support girder 12 is joined to the spar 11. The two support girders 12 and 12 are arranged in parallel in the longitudinal direction of the spar 11 and are parallel to each other. One support beam 12 is disposed so as to face the excavation hole H, and the other support beam 12 is disposed on the opposite side of the excavation hole H with the one support beam 12 interposed therebetween. The support beam 12 is made of steel.

ガイドレール13は、昇降支持部B2の軌条を兼ねる棒状部材であり、一対の支持桁12,12のうち、前側(掘削穴Hに近い方)の支持桁12に立設されている。ガイドレール13の後面は、上車輪24の走行面となり、ガイドレール13の前面は、下車輪25の走行面となる。本実施形態では、一の昇降支持部B2に対して二本のガイドレール13,13が配置されている。二本一組のガイドレール13,13は、支持桁12の長手方向(以下「左右方向」という。)に間隔をあけて並設されており、第一ホルダ22を挟んで対向している。本実施形態では、I形鋼をガイドレール13としているが、H型鋼、溝形鋼、角形鋼管などをガイドレール13としてもよい。   The guide rail 13 is a rod-shaped member that also serves as a rail for the lifting support portion B <b> 2, and is erected on the support beam 12 on the front side (the one closer to the excavation hole H) of the pair of support beams 12 and 12. The rear surface of the guide rail 13 is a traveling surface of the upper wheel 24, and the front surface of the guide rail 13 is a traveling surface of the lower wheel 25. In this embodiment, the two guide rails 13 and 13 are arrange | positioned with respect to one raising / lowering support part B2. The pair of guide rails 13 and 13 are arranged side by side in the longitudinal direction of the support beam 12 (hereinafter referred to as “left-right direction”) with a space therebetween, and face each other with the first holder 22 interposed therebetween. In this embodiment, the I-shaped steel is used as the guide rail 13, but an H-shaped steel, a grooved steel, a square steel pipe, or the like may be used as the guide rail 13.

支柱14は、一対の支持桁12,12のうち、後側(掘削穴Hから遠い方)の支持桁12に立設されている。すなわち、支柱14は、ガイドレール13の後方に配置されている。本実施形態では、一の昇降支持部B2に対して二本の支柱14,14を配置している。二本一組の支柱14,14は、左右方向に間隔をあけて並設されていて、第一支持部材21を挟んで対向している。支柱14,14の上端部は、繋ぎ部材15を介してガイドレール13,13に接続されている。本実施形態では、角形鋼管を支柱14としているが、H型鋼、I形鋼、溝形鋼などを支柱14としてもよい。   The support column 14 is erected on the support beam 12 on the rear side (away from the excavation hole H) of the pair of support beams 12 and 12. That is, the support column 14 is disposed behind the guide rail 13. In this embodiment, two support columns 14 and 14 are arranged for one lifting support B2. The pair of two columns 14, 14 are arranged in parallel in the left-right direction, and face each other with the first support member 21 interposed therebetween. The upper ends of the columns 14 and 14 are connected to the guide rails 13 and 13 via the connecting member 15. In this embodiment, a square steel pipe is used as the support 14, but an H-shaped steel, I-shaped steel, grooved steel, or the like may be used as the support 14.

繋ぎ部材15は、ガイドレール13および支柱14の上端に配置されており、ガイドレール13と支柱14とを繋いでいる。本実施形態の繋ぎ部材15は、一の昇降支持部B2に対応して配置された棒状部材群(ガイドレール13,13と支柱14,14)を一括して繋いでいる。ガイドレール13,13を繋ぎ部材15で連結すると、各ガイドレール13の横倒れが防止されるようになり、ガイドレール13と支柱14とを繋ぎ部材15で連結すると、ガイドレール13の前方への倒れあるいは後方への倒れが防止されるようになる。   The connecting member 15 is disposed at the upper ends of the guide rail 13 and the support column 14, and connects the guide rail 13 and the support column 14. The connecting member 15 of the present embodiment collectively connects the bar-like member groups (guide rails 13 and 13 and the columns 14 and 14) arranged corresponding to one lifting support portion B2. When the guide rails 13 and 13 are connected by the connecting member 15, the sideways falling of each guide rail 13 is prevented. When the guide rail 13 and the support column 14 are connected by the connecting member 15, the guide rail 13 is moved forward. A fall or backward fall is prevented.

昇降支持部B2は、図5に示すように、第一支持部材21、第一ホルダ22、第一進退用アクチュエータ23、上車輪24、下車輪25などを備えるものであり、ガイドレール13に沿って上下に移動する。なお、本実施形態の昇降支持部B2は、左右一対のガイドレール13,13に対応して、上車輪24および下車輪25を二つずつ備えている(図4参照)。   As shown in FIG. 5, the lifting support portion B <b> 2 includes a first support member 21, a first holder 22, a first advance / retreat actuator 23, an upper wheel 24, a lower wheel 25, and the like, along the guide rail 13. To move up and down. In addition, the raising / lowering support part B2 of this embodiment is provided with two upper wheels 24 and two lower wheels 25 corresponding to the pair of left and right guide rails 13 and 13 (see FIG. 4).

第一支持部材21は、進退可能な状態で第一ホルダ22に貫設されており、支持位置(図1に示す第一補助部材3または第二補助部材4を支持可能な位置)と退避位置(鉄筋籠Aに干渉しない位置)とを選択することができる。「支持位置」とするには、第一支持部材21を前進させて、第一ホルダ22の前端からの突出量を増大させればよく、「退避位置」とするには、第一支持部材21を後退させて、第一ホルダ22の前端からの突出量を減少させればよい。すなわち、第一支持部材21を「支持位置」に向けて前進させると、第一支持部材21の前端部が隣り合う縦筋1,1(図2参照)の間を通って鉄筋籠Aの内部に挿入され、図6に示すように、第一補助部材3または第二補助部材4を下から支持し得るようになる。また、第一支持部材21を「退避位置」に向けて後退させると、第一支持部材21の前端部が鉄筋籠Aから抜け出るようになる。   The first support member 21 penetrates the first holder 22 in a state where it can advance and retract, and a support position (a position where the first auxiliary member 3 or the second auxiliary member 4 shown in FIG. 1 can be supported) and a retracted position. (Position not interfering with the reinforcing bar A) can be selected. The “support position” can be achieved by moving the first support member 21 forward to increase the amount of protrusion from the front end of the first holder 22. And the amount of protrusion from the front end of the first holder 22 may be reduced. That is, when the first support member 21 is advanced toward the “support position”, the front end portion of the first support member 21 passes between the adjacent vertical bars 1 and 1 (see FIG. 2), and the inside of the reinforcing bar A. As shown in FIG. 6, the first auxiliary member 3 or the second auxiliary member 4 can be supported from below. Further, when the first support member 21 is retracted toward the “retracted position”, the front end portion of the first support member 21 comes out of the reinforcing bar A.

第一支持部材21の前端部は、縦筋1,1の「あき」よりも小さな幅寸法に成形されており、かつ、横筋2,2の「あき」よりも小さな高さ寸法に成形されている。本実施形態では、第一支持部材21の前端部の高さおよび幅を、その後方の部位よりも小さくしている。   The front end portion of the first support member 21 is formed to have a width dimension smaller than the “opening” of the vertical bars 1, 1 and to a height dimension smaller than the “opening” of the horizontal bars 2, 2. Yes. In the present embodiment, the height and width of the front end portion of the first support member 21 are made smaller than the rear portion thereof.

第一支持部材21の前端部の上面には、突起21aが形成されている。突起21aは、第一支持部材21が支持位置にあるときに、第一補助部材3または第二補助部材4を超えたところに位置し、第一補助部材3または第二補助部材4の脱落を阻止する。   A protrusion 21 a is formed on the upper surface of the front end portion of the first support member 21. The protrusion 21a is located beyond the first auxiliary member 3 or the second auxiliary member 4 when the first support member 21 is in the support position, and prevents the first auxiliary member 3 or the second auxiliary member 4 from dropping off. Stop.

図5に示すように、第一支持部材21は、第一ホルダ22を貫通しており、第一ホルダ22の後端部は、第一ホルダ22の後端から常に突出している。第一支持部材21のうち、第一ホルダ22の後端から突出する部分は、左右の支柱14,14の間に位置している(図4参照)。第一支持部材21の後端部(第一ホルダ22の後端から常に突出する部分)には、下方に向けて延出するロッド取付部21bが形成されている。   As shown in FIG. 5, the first support member 21 passes through the first holder 22, and the rear end portion of the first holder 22 always protrudes from the rear end of the first holder 22. The part which protrudes from the rear end of the 1st holder 22 among the 1st support members 21 is located between the right and left support | pillars 14 and 14 (refer FIG. 4). A rod attachment portion 21b extending downward is formed at the rear end portion of the first support member 21 (a portion that always protrudes from the rear end of the first holder 22).

第一ホルダ22は、第一支持部材21を抱持するものであり、左右のガイドレール13,13の間に配置されている(図4参照)。第一ホルダ22は、第一支持部材21が支持位置に移動したときには、第一支持部材21の中間部を抱持する。第一支持部材21を支持位置に移動させると、第一支持部材21の前部の突出量(第一ホルダ22の前端からの突出量)が増大し、第一支持部材21の前端部が片持ち梁のような状態になるところ、本実施形態においては、第一支持部材21が支持位置に移動したときでも、第一ホルダ22全体で第一支持部材21の中間部を支持することができるので、鉄筋籠Aの重量が作用した状態の第一支持部材21を安定的に支持することが可能となる。なお、第一ホルダ22は、第一支持部材21の前端部に作用する荷重によって第一支持部材21が回転しないよう、少なくとも第一支持部材21の上下を支持している。   The first holder 22 holds the first support member 21 and is disposed between the left and right guide rails 13 and 13 (see FIG. 4). The first holder 22 holds the intermediate portion of the first support member 21 when the first support member 21 moves to the support position. When the first support member 21 is moved to the support position, the protrusion amount of the front portion of the first support member 21 (the protrusion amount from the front end of the first holder 22) increases, and the front end portion of the first support member 21 is a piece. In this embodiment, the intermediate portion of the first support member 21 can be supported by the entire first holder 22 even when the first support member 21 is moved to the support position. Therefore, it becomes possible to stably support the first support member 21 in a state where the weight of the reinforcing bar A is applied. The first holder 22 supports at least the top and bottom of the first support member 21 so that the first support member 21 does not rotate due to a load acting on the front end portion of the first support member 21.

第一進退用アクチュエータ23は、第一支持部材21を支持位置と退避位置との間で往復させるものであり、第一支持部材21の下に配置されている。本実施形態の第一進退用アクチュエータ23は、いわゆる電動シリンダであり、進退可能な第一ロッド23a、第一ロッド23aを抱持する収容筒23b、第一ロッド23aの動力源となる電動モータ23c、減速機(図示せず)を収容したギアケース23dなどを備えている。なお、第一進退用アクチュエータ23は、第一ホルダ22の下面に取り付けられており、第一ホルダ22と一緒に昇降する。   The first advance / retreat actuator 23 reciprocates the first support member 21 between the support position and the retracted position, and is disposed below the first support member 21. The first advancing / retracting actuator 23 of the present embodiment is a so-called electric cylinder, and is a first rod 23a that can advance and retreat, a housing cylinder 23b that holds the first rod 23a, and an electric motor 23c that serves as a power source for the first rod 23a. A gear case 23d that houses a reduction gear (not shown) is provided. The first advance / retreat actuator 23 is attached to the lower surface of the first holder 22 and moves up and down together with the first holder 22.

第一ロッド23aおよび収容筒23bは、ロッド取付部21bの前側(掘削穴H側)に配置されている。第一ロッド23aは、ロッド取付部21bに接続されており、第一ロッド23aを退行させると、第一支持部材21が支持位置に向けて移動し、第一ロッド23aを進出させると、第一支持部材21が退避位置に向けて移動する。第一ホルダ22の後端から突出するロッド取付部21bに第一ロッド23aを接続すると、第一支持部材21を退避位置に移動させたときに、第一支持部材21の前端部を第一ホルダ22に収容することができる。なお、ロッド取付部21bに第一ロッド23aを接続すると、第一支持部材21の前部に第一ロッド23aを接続する場合に比べて、第一支持部材21の前部の突出量を小さくする(片持ち状に張り出す部分を小さくする)ことが可能になるので、鉄筋籠Aを安定的に支持することが可能となる。   The 1st rod 23a and the accommodation cylinder 23b are arrange | positioned at the front side (excavation hole H side) of the rod attachment part 21b. The first rod 23a is connected to the rod attachment portion 21b. When the first rod 23a is retracted, the first support member 21 moves toward the support position, and when the first rod 23a is advanced, The support member 21 moves toward the retracted position. When the first rod 23a is connected to the rod mounting portion 21b protruding from the rear end of the first holder 22, the front end portion of the first support member 21 is moved to the first holder when the first support member 21 is moved to the retracted position. 22 can be accommodated. In addition, when the first rod 23a is connected to the rod mounting portion 21b, the protrusion amount of the front portion of the first support member 21 is made smaller than when the first rod 23a is connected to the front portion of the first support member 21. Since it becomes possible to reduce the portion that projects in a cantilever manner, the reinforcing bar A can be stably supported.

第一ロッド23aおよび収容筒23bは、第一支持部材21の直下に位置しており、電動モータ23cは、収容筒23bの直下に位置している。このようにすると、第一支持部材21と第一進退用アクチュエータ23とが上下に重なるようになるので、第一進退用アクチュエータ23を第一支持部材21の後方に配置する場合に比べて、昇降支持部B2の奥行き寸法が小さくなる。   The first rod 23a and the housing cylinder 23b are located directly below the first support member 21, and the electric motor 23c is located directly below the housing cylinder 23b. As a result, the first support member 21 and the first advance / retreat actuator 23 overlap each other, so that the first advance / retreat actuator 23 is moved up and down as compared with the case where the first advance / retreat actuator 23 is arranged behind the first support member 21. The depth dimension of the support portion B2 is reduced.

上車輪24は、第一支持部材21の上に位置しており、かつ、ガイドレール13の後面を走行する。上車輪24,24の車軸は、軸箱24aに支持されている。軸箱24aは、上車輪24,24の間に配置されており、第一ホルダ22の上面に固定されている。   The upper wheel 24 is located on the first support member 21 and travels on the rear surface of the guide rail 13. The axles of the upper wheels 24, 24 are supported by the axle box 24a. The axle box 24 a is disposed between the upper wheels 24, 24 and is fixed to the upper surface of the first holder 22.

下車輪25は、第一支持部材21の下に位置しており、かつ、ガイドレール13の前面を走行する。下車輪25,25の車軸は、軸箱25aに支持されている。軸箱25aは、下車輪25,25の間に配置されており、第一ホルダ22の下面に固定されている。   The lower wheel 25 is located below the first support member 21 and travels in front of the guide rail 13. The axles of the lower wheels 25 and 25 are supported by the axle box 25a. The axle box 25 a is disposed between the lower wheels 25, 25 and is fixed to the lower surface of the first holder 22.

固定支持部B3は、第二支持部材31、第二ホルダ32、第二進退用アクチュエータ33などを備えている。昇降支持部B2と異なり、固定支持部B3は、上下に移動しない。本実施形態の固定支持部B3は、昇降支持部B2の直下に位置している。   The fixed support portion B3 includes a second support member 31, a second holder 32, a second advance / retreat actuator 33, and the like. Unlike the lifting support B2, the fixed support B3 does not move up and down. The fixed support part B3 of the present embodiment is located directly below the elevation support part B2.

第二支持部材31の構成は、昇降支持部B2の第一支持部材21と同様である。すなわち、第二支持部材31は、「支持位置」と「退避位置」とを選択可能であり、第二支持部材31の前端部は、隣り合う縦筋1,1の間を通って鉄筋籠Aの内部に挿入され、支持位置において第一補助部材3または第二補助部材4を下から支持する。また、第二支持部材31の前端部の上面には、突起が形成されている。なお、第二支持部材31の後端部には、上方に向けて延出するロッド取付部31bが形成されている。   The structure of the 2nd support member 31 is the same as that of the 1st support member 21 of raising / lowering support part B2. That is, the second support member 31 can select a “support position” and a “retracted position”, and the front end portion of the second support member 31 passes between the adjacent vertical bars 1 and 1 to reinforce bar A. The first auxiliary member 3 or the second auxiliary member 4 is supported from below at the support position. Further, a protrusion is formed on the upper surface of the front end portion of the second support member 31. A rod mounting portion 31b extending upward is formed at the rear end portion of the second support member 31.

第二ホルダ32は、前側の支持桁12に固定されている。第二ホルダ32のその他の構成は、昇降支持部B2の第一ホルダ22と同様である。   The second holder 32 is fixed to the front support beam 12. Other configurations of the second holder 32 are the same as those of the first holder 22 of the lifting support portion B2.

第二進退用アクチュエータ33は、第二支持部材31を支持位置と退避位置との間で往復させるものであり、第二支持部材31の上に配置されている。本実施形態の第二進退用アクチュエータ33は、いわゆる電動シリンダであり、進退可能な第二ロッド33a、第二ロッド33aを抱持する収容筒33b、第二ロッド33aの動力源となる電動モータ33c、減速機(図示せず)を収容したギアケース33dなどを備えている。なお、第二進退用アクチュエータ33は、第二ホルダ32の上面に取り付けられている。   The second advance / retreat actuator 33 reciprocates the second support member 31 between a support position and a retracted position, and is disposed on the second support member 31. The second advancing / retreating actuator 33 according to the present embodiment is a so-called electric cylinder, which is a second rod 33a that can advance and retreat, a housing cylinder 33b that holds the second rod 33a, and an electric motor 33c that serves as a power source for the second rod 33a. And a gear case 33d that houses a reduction gear (not shown). The second advancing / retreating actuator 33 is attached to the upper surface of the second holder 32.

第二ロッド33aおよび収容筒33bは、ロッド取付部31bの前側(掘削穴H側)に配置されている。第二ロッド33aは、ロッド取付部31bに接続されており、第二ロッド33aを退行させると、第二支持部材31が支持位置に向けて移動し、第二ロッド33aを進出させると、第二支持部材31が退避位置に向けて移動する。第二支持部材31を退避位置に移動させると、第二支持部材31の前端部が第二ホルダ32に収容された状態となる。なお、ロッド取付部31bに第二ロッド33aを接続すると、第二支持部材31の前部に第二ロッド33aを接続する場合に比べて、第二支持部材31の前部の突出量を小さくすることが可能になるので、鉄筋籠Aを安定的に支持することが可能となる。   The second rod 33a and the housing cylinder 33b are disposed on the front side (excavation hole H side) of the rod attachment portion 31b. The second rod 33a is connected to the rod mounting portion 31b. When the second rod 33a is retracted, the second support member 31 moves toward the support position, and when the second rod 33a is advanced, The support member 31 moves toward the retracted position. When the second support member 31 is moved to the retracted position, the front end portion of the second support member 31 is accommodated in the second holder 32. In addition, when the second rod 33a is connected to the rod mounting portion 31b, the amount of protrusion of the front portion of the second support member 31 is made smaller than when the second rod 33a is connected to the front portion of the second support member 31. Therefore, the reinforcing bar A can be stably supported.

第二ロッド33aおよび収容筒33bは、第二支持部材31の直上に位置しており、電動モータ33cは、収容筒33bの直上に位置している。このようにすると、第二支持部材31と第二進退用アクチュエータ33とが上下に重なるようになるので、第二進退用アクチュエータ33を第二支持部材31の後方に配置する場合に比べて、固定支持部B3の奥行き寸法が小さくなる。   The second rod 33a and the accommodation cylinder 33b are located immediately above the second support member 31, and the electric motor 33c is located immediately above the accommodation cylinder 33b. If it does in this way, since the 2nd support member 31 and the 2nd advance / retreat actuator 33 will overlap up and down, compared with the case where the 2nd advance / retreat actuator 33 is arranged behind 2nd support member 31, it is fixed. The depth dimension of the support portion B3 is reduced.

昇降機構B4は、図7に示すように、昇降用アクチュエータ41と、連結部42を備えている。本実施形態の昇降機構B4は、左右二つの昇降支持部B2,B2を同時に昇降させるものであり、連結部42は、左右二つの昇降支持部B2,B2に接続されている。   As shown in FIG. 7, the elevating mechanism B <b> 4 includes an elevating actuator 41 and a connecting portion 42. The raising / lowering mechanism B4 of this embodiment raises / lowers two right and left raising / lowering support parts B2, B2 simultaneously, and the connection part 42 is connected to two right / left raising / lowering support parts B2, B2.

昇降用アクチュエータ41は、第一支持部材21,21を昇降させるものであり、昇降支持部B2,B2の間に配置されている。本実施形態の昇降用アクチュエータ41は、いわゆる電動シリンダであり、進退可能な昇降ロッド41a、昇降ロッド41aを抱持する収容筒41b、昇降ロッド41aの動力源となる電動モータ41c、減速機(図示せず)を収容したギアケース41dなどを備えている。なお、昇降用アクチュエータ41は、支持桁12に固定されている。   The raising / lowering actuator 41 raises / lowers the first support members 21, 21, and is disposed between the elevation support parts B 2, B 2. The raising / lowering actuator 41 of this embodiment is what is called an electric cylinder, the raising / lowering rod 41a which can be advanced / retracted, the storage cylinder 41b which holds the raising / lowering rod 41a, the electric motor 41c used as the motive power source of the raising / lowering rod 41a, a reduction gear (FIG. A gear case 41d and the like that house a housing (not shown). The lifting actuator 41 is fixed to the support beam 12.

昇降ロッド41aは、連結部42に接続されており、昇降ロッド41aを進出させると、連結部42が上昇し(図7の(a)参照)、昇降ロッド41aを退行させると、連結部42が下降する(図7の(b)参照)。   The elevating rod 41a is connected to the connecting portion 42. When the elevating rod 41a is advanced, the connecting portion 42 rises (see (a) of FIG. 7), and when the elevating rod 41a is retracted, the connecting portion 42 is It descends (see FIG. 7B).

連結部42は、昇降用アクチュエータ41の上に配置された頂部42aと、頂部42aから下方に向かって延びる柱部42bと、柱部42bの下端部から側方に向かって延びる梁部42cとを備えている。なお、柱部42bおよび梁部42cは、二つずつ設けられている。   The connecting portion 42 includes a top portion 42a disposed on the lifting actuator 41, a column portion 42b extending downward from the top portion 42a, and a beam portion 42c extending sideward from the lower end portion of the column portion 42b. I have. Two column portions 42b and two beam portions 42c are provided.

頂部42aは、昇降ロッド41aの上端部に接続されており、梁部42cは、ガイドレール13と支柱14との間を通り(図4参照)、第一ホルダ22に接続されている。柱部42b,42bは、頂部42aと梁部42c,42cとを繋いでおり、昇降ロッド41aおよび収容筒42bを挟んで対向している。頂部42aと梁部42cとの間に柱部42bを介在させると、昇降ロッド41aの上端よりも下がったところに昇降支持部B2が位置するようになるので、柱部42bを介在させない場合に比べて、昇降支持部B2の上昇限を低くすることができ、ひいては、ガイドレール13の長尺化を抑制することができる。   The top part 42a is connected to the upper end part of the raising / lowering rod 41a, and the beam part 42c passes between the guide rail 13 and the support | pillar 14 (refer FIG. 4), and is connected to the 1st holder 22. FIG. The column portions 42b and 42b connect the top portion 42a and the beam portions 42c and 42c, and face each other with the lifting rod 41a and the housing cylinder 42b interposed therebetween. When the column part 42b is interposed between the top part 42a and the beam part 42c, the elevating support part B2 comes to be located at a position lower than the upper end of the elevating rod 41a, so that compared with the case where the column part 42b is not interposed. Thus, the ascent limit of the lifting support portion B2 can be lowered, and consequently the length of the guide rail 13 can be suppressed.

次に、図8乃至図10を参照して、建込装置Bを利用して鉄筋籠Aを掘削穴Hに建て込む方法を説明する。   Next, with reference to FIG. 8 thru | or FIG. 10, the method to build the reinforcing bar A in the excavation hole H using the erection apparatus B is demonstrated.

以下では、鉄筋籠Aがn個のブロックα1,α2,…,αn-1,αnに分割されている場合を例示する。なお、最下段からn−1個のブロックα1,α2,…,αn-1は鉄筋籠本体A1となり、最上段のブロックαnは、接合部A2および仮設部A3となる。 Hereinafter, a case where the reinforcing bar A is divided into n blocks α 1 , α 2 ,..., Α n−1 , α n will be exemplified. Note that n−1 blocks α 1 , α 2 ,..., Α n-1 from the bottom are the reinforcing bar body A1, and the top block α n are the joint A2 and the temporary part A3.

図8の(a)に示すように、まず、揚重機械(図示略)を利用して最下段のブロックα1を掘削穴Hの上方に搬入し、ブロックα1の下部を建込装置B,Bに保持させる。次に、建込装置B,Bを利用してブロックα1を掘削穴Hに挿入する。 As shown in (a) of FIG. 8, first, the lifting machine by using the (not shown) carries the block alpha 1 of the lowermost above the wellbore H, Kenkomi device at the bottom of the block alpha 1 B , B. Next, the block α 1 is inserted into the excavation hole H using the erection devices B and B.

ブロックα1(鉄筋籠本体A1)を掘削穴Hに挿入するには、図10の(a)および(b)に示すように、一の第一補助部材3を第一支持部材21に載置した状態で第一支持部材21を下降させる下降ステップと、図10の(c)および(d)に示すように、他の第一補助部材3を第二支持部材31に載置した状態で第一支持部材21を上昇させる上昇ステップとを繰り返せばよい。 In order to insert the block α 1 (reinforcing bar main body A1) into the excavation hole H, the first auxiliary member 3 is placed on the first support member 21 as shown in FIGS. 10 (a) and 10 (b). The lowering step of lowering the first support member 21 in the state where the second support member 31 is placed on the second support member 31 as shown in FIGS. 10 (c) and 10 (d). What is necessary is just to repeat the raising step which raises the one supporting member 21.

より詳細に説明すると、下降ステップでは、まず、第一支持部材21を第一補助部材3の下に位置させて、第一支持部材21でブロックα1を支持する(図10の(a)参照)。次に、昇降ロッド41aを退行させることで(図7の(a)参照)、昇降支持部B2を下降させる(図10の(b)参照)。なお、下降ステップは、総ての第二支持部材31を退避させた状態で行う。その後、昇降支持部B2の高さ位置を微調整し、他の第一補助部材3(第一支持部材21に支持された第一補助部材3の下側に位置する第一補助部材3)を第二支持部材31のやや上に位置させる。なお、第一支持部材21を下降させる際には、一方の建込装置Bの昇降用アクチュエータ41と他方の建込装置Bの昇降用アクチュエータ41とで、動作を同期させることが望ましい。ちなみに、本実施形態では、電動シリンダを昇降用アクチュエータ41としているので、容易に同期させることができる。 In more detail, in the descending step, first, the first supporting member 21 is positioned below the first auxiliary member 3, a block alpha 1 in the first support member 21 for supporting (in see FIG. 10 (a) ). Next, the lifting rod 41a is retracted (see FIG. 7A), and the lifting support B2 is lowered (see FIG. 10B). The descending step is performed with all the second support members 31 retracted. Thereafter, the height position of the lifting support portion B2 is finely adjusted, and the other first auxiliary member 3 (the first auxiliary member 3 positioned below the first auxiliary member 3 supported by the first support member 21) is moved. It is positioned slightly above the second support member 31. When lowering the first support member 21, it is desirable to synchronize the operation of the lifting actuator 41 of one construction device B and the lifting actuator 41 of the other construction device B. Incidentally, in this embodiment, since the electric cylinder is the lifting actuator 41, it can be easily synchronized.

次に、第二ロッド33aを退行させて、第二支持部材31を支持位置に向けて移動させる。第二支持部材31の前端部が鉄筋籠本体A1の内部に挿入されたら、昇降支持部B2を僅かに下降させて、第一補助部材3を第二支持部材31に載置する。第一補助部材3を第二支持部材31に載置したら、第一ロッド23aを進出させて、第一支持部材21を退避位置に向けて移動させる(図10の(c)参照)。なお、第一支持部材21を退避位置に向けて移動させる作業は、フェールセーフの観点から、一方の建込装置Bの第一進退用アクチュエータ23と他方の建込装置Bの第一進退用アクチュエータ23とを、時間をずらして別々に動作させることが望ましい。   Next, the second rod 33a is retracted, and the second support member 31 is moved toward the support position. When the front end portion of the second support member 31 is inserted into the reinforcing bar main body A 1, the lifting support portion B 2 is slightly lowered and the first auxiliary member 3 is placed on the second support member 31. When the first auxiliary member 3 is placed on the second support member 31, the first rod 23a is advanced to move the first support member 21 toward the retracted position (see FIG. 10C). In addition, the operation | work which moves the 1st support member 21 toward a retracted position is the 1st advance / retreat actuator 23 of one construction apparatus B, and the 1st advance / retreat actuator of the other construction apparatus B from a fail safe viewpoint. 23 are preferably operated separately at different times.

総ての第一支持部材21を退避させたら、上昇ステップを行う。上昇ステップでは、まず、昇降ロッド41aを進出させることで(図7の(b)参照)、昇降支持部B2を上昇させ、他の第一補助部材3(下降ステップで第一支持部材21が支持していた第一補助部材3の上側に位置する第一補助部材3)のやや下に第一支持部材21を位置させる(図10の(d)参照)。その後、第一ロッド23aを退行させて、第一支持部材21を支持位置に向けて移動させる。第一支持部材21の前端部がブロックα1の内部に挿入されたら、昇降支持部B2を僅かに上昇させて、ブロックα1を第一支持部材21に受け替える。第一支持部材21への受け替えが完了したら、第二ロッド33aを進出させて、第二支持部材31を退避位置に向けて移動させる(図10の(a)参照)。なお、第二支持部材31を退避位置に向けて移動させる作業は、フェールセーフの観点から、一方の建込装置Bの第二進退用アクチュエータ33と他方の建込装置Bの第二進退用アクチュエータ33とを、時間をずらして別々に動作させることが望ましい。 When all the first support members 21 are retracted, the ascending step is performed. In the ascending step, first, the elevating rod 41a is advanced (see FIG. 7B) to elevate the elevating support part B2, and the other first auxiliary member 3 (supported by the first support member 21 in the descending step). The first support member 21 is positioned slightly below the first auxiliary member 3) located on the upper side of the first auxiliary member 3 (see FIG. 10D). Thereafter, the first rod 23a is retracted, and the first support member 21 is moved toward the support position. When the front end portion of the first support member 21 is inserted into the block α 1 , the lifting support portion B 2 is slightly raised, and the block α 1 is replaced with the first support member 21. When the replacement to the first support member 21 is completed, the second rod 33a is advanced to move the second support member 31 toward the retracted position (see (a) of FIG. 10). In addition, the operation | work which moves the 2nd support member 31 toward a retracted position is the second advancing / retreating actuator 33 of one erection apparatus B, and the second advancing / retreating actuator of the other erection apparatus B from a fail-safe viewpoint. It is desirable to operate 33 separately at different times.

上記各ステップを繰り返し、ブロックα1の上端部が建込装置B,Bに保持された状態となったら、図8の(b)に示すように、揚重機械(図示略)を利用して下から二段目のブロックα2を掘削穴Hの上方に搬入する。最下段のブロックα1の直上にブロックα2を位置させたら、図示せぬ機械式鉄筋継手を用いてブロックα1,α2を連結し、その後、建込装置B,Bを利用してブロックα1,α2を下降させる。以後、上記各ステップと同様の作業を繰り返す。 When the above steps are repeated and the upper end of the block α 1 is held by the erection devices B and B, as shown in FIG. 8B, a lifting machine (not shown) is used. The second block α 2 from the bottom is carried above the excavation hole H. Once it positions the block alpha 2 immediately above the bottom of the block alpha 1, block alpha 1 using a mechanical reinforcing bar joint (not shown) connects the alpha 2, then, by using Kenkomi device B, the B block Decrease α 1 and α 2 . Thereafter, the same operation as the above steps is repeated.

図9の(a)に示すように、上から二段目のブロックαn-1の上端部が建込装置B,Bに保持された状態となったら、揚重機械(図示略)を利用して最上段のブロックαnを掘削穴Hの上方に搬入する。ブロックαn-1の直上に最上段のブロックαn(仮設部A3を含むブロック)を位置させたら、図示せぬ機械式鉄筋継手を用いてブロックαn-1,αnを連結し、その後、建込装置B,Bを利用してブロックα1,α2,…,αn-1,αnを下降させる(図9の(b)参照)。 As shown in FIG. 9 (a), when the upper end of the second block α n-1 from the top is held by the erection devices B and B, a lifting machine (not shown) is used. Then, the uppermost block α n is carried above the excavation hole H. Once it positions the uppermost block alpha n (block including a temporary portion A3) directly above the block alpha n-1, connecting the blocks α n-1, α n using a mechanical reinforcing bar joint (not shown), then Then, the blocks α 1 , α 2 ,..., Α n−1 , α n are lowered using the built-in devices B and B (see FIG. 9B).

ブロックαnを掘削穴Hに挿入するには、図示は省略するが、一の第二補助部材4を第一支持部材21に載置した状態で第一支持部材21を下降させるステップと、他の第二補助部材4を第二支持部材31に載置した状態で第一支持部材21を上昇させるステップとを繰り返せばよい。詳細は、図10に示す手順と同様である。 In order to insert the block α n into the excavation hole H, although not shown in the figure, the step of lowering the first support member 21 with the one second auxiliary member 4 placed on the first support member 21, and the like The step of raising the first support member 21 in a state where the second auxiliary member 4 is placed on the second support member 31 may be repeated. Details are similar to the procedure shown in FIG.

最上段のブロックαn(すなわち、仮設部A3)を掘削穴Hに挿入すると、ブロックα1,α2,…,αn-1(すなわち、鉄筋籠本体A1)を建込装置Bの下方に位置させることが可能となる。 When the uppermost block α n (that is, the temporary part A3) is inserted into the excavation hole H, the blocks α 1 , α 2 ,..., Α n-1 (that is, the reinforcing bar body A1) are placed below the erection device B. It becomes possible to position.

なお、最上段のブロックαnの上端部が建込装置B,Bに保持された状態となったら、図9の(b)に示すように、鉄筋籠Aを支持部材16に受け替え、建込装置Bを撤去する。その後、接合部A2の上端部までコンクリートを打設すると、場所打ちコンクリート杭が形成される。仮設部A3は、コンクリートが硬化した後に切除する。 When the upper end portion of the uppermost block α n is held by the erection devices B and B, as shown in FIG. The insertion device B is removed. Thereafter, when the concrete is placed up to the upper end of the joint A2, a cast-in-place concrete pile is formed. The temporary part A3 is excised after the concrete has hardened.

以上のように、本実施形態に係る鉄筋籠Aによれば、上記の建込方法を採用することが可能となるので、建込装置Bを利用しながらも、鉄筋籠本体A1の全体を地中に建て込むことが可能となる。   As described above, according to the reinforcing bar rod A according to the present embodiment, the above-described erection method can be adopted, so that the entire reinforcing bar rod main body A1 can be grounded while using the erection device B. It can be built inside.

また、第一支持部材21と第一進退用アクチュエータ23とを上下に重ね、さらには、第一支持部材21の後端部に第一ロッド23aを接続するとともに、第一支持部材21と第一ロッド23aの進退方向を逆にしたので、昇降支持部B2の奥行き寸法が小さくなる。固定支持部B3についても同様である。すなわち、本実施形態に係る建込装置Bによれば、昇降支持部B2および固定支持部B3のコンパクト化を図ることができるので、作業スペースが狭隘であっても、建込装置Bを設置することが可能となる。   Further, the first support member 21 and the first advance / retreat actuator 23 are stacked one above the other, and further, the first rod 23a is connected to the rear end portion of the first support member 21, and the first support member 21 and the first Since the advancing / retreating direction of the rod 23a is reversed, the depth dimension of the lifting support portion B2 is reduced. The same applies to the fixed support portion B3. That is, according to the build-in device B according to the present embodiment, the elevating support portion B2 and the fixed support portion B3 can be made compact, so that the build-in device B is installed even if the work space is narrow. It becomes possible.

また、本実施形態の建込装置Bでは、上車輪24がガイドレール13の後面に当接し、下車輪25がガイドレール13の前面に当接するので、鉄筋籠Aを第一支持部材21に載置したときに生じるモーメントに好適に対抗することが可能となる。   Further, in the erection device B of the present embodiment, the upper wheel 24 contacts the rear surface of the guide rail 13 and the lower wheel 25 contacts the front surface of the guide rail 13, so that the reinforcing bar A is mounted on the first support member 21. It is possible to suitably counter the moment that occurs when placed.

なお、本実施形態では、鉄筋籠本体A1と仮設部A3との間に接合部A2を介在させた場合を例示したが、接合部A2は省略してもよい。   In addition, in this embodiment, although the case where the junction part A2 was interposed between the reinforcing bar main body A1 and the temporary part A3 was illustrated, the junction part A2 may be omitted.

本実施形態では、昇降支持部B2の下に固定支持部B3を配置した場合を例示したが、昇降支持部B2の上に固定支持部B3を配置してもよい。   In this embodiment, although the case where fixed support part B3 was arrange | positioned under raising / lowering support part B2 was illustrated, you may arrange fixed support part B3 on raising / lowering support part B2.

本実施形態では、第一支持部材21の下に第一進退用アクチュエータ23を配置したが、第一支持部材21の上に第一進退用アクチュエータ23を配置してもよい。また、本実施形態では、第二支持部材31の上に第二進退用アクチュエータ33を配置したが、第二支持部材31の下に第二進退用アクチュエータ33を配置してもよい。   In the present embodiment, the first advance / retreat actuator 23 is disposed below the first support member 21, but the first advance / retreat actuator 23 may be disposed on the first support member 21. In the present embodiment, the second advance / retreat actuator 33 is disposed on the second support member 31, but the second advance / retreat actuator 33 may be disposed below the second support member 31.

本実施形態では、第一進退用アクチュエータ23、第二進退用アクチュエータ33および昇降用アクチュエータ41が電動シリンダである場合を例示したが、電動シリンダに代えて油圧シリンダやエアシリンダを用いても勿論差し支えない。また、第一進退用アクチュエータ23および第二進退用アクチュエータ33を省略し、第一支持部材21および第二支持部材31の進退動作を手動で行ってもよい。   In the present embodiment, the case where the first advance / retreat actuator 23, the second advance / retreat actuator 33, and the elevating actuator 41 are electric cylinders is exemplified, but it goes without saying that a hydraulic cylinder or an air cylinder may be used instead of the electric cylinder. Absent. Alternatively, the first advance / retreat actuator 23 and the second advance / retreat actuator 33 may be omitted, and the advance / retreat operation of the first support member 21 and the second support member 31 may be performed manually.

A 鉄筋籠
A1 鉄筋籠本体
A3 仮設部
1 縦筋
2 横筋
3 第一補助部材
4 第二補助部材
B 建込装置
21 第一支持部材
31 第二支持部材
H 掘削穴
A Reinforcing bar A1 Reinforcing bar main body A3 Temporary part 1 Vertical bar 2 Horizontal bar 3 First auxiliary member 4 Second auxiliary member B Construction device 21 First support member 31 Second support member H Drilling hole

Claims (2)

複数本の縦筋と複数本の横筋とを格子状に組み合わせて形成した鉄筋籠本体と、
前記複数本の縦筋のうちの一部を上方向に延長して形成した仮設部と、を備える鉄筋籠であって、
前記鉄筋籠本体は、上下方向に間隔をあけて配置された複数の第一補助部材を有し、
前記仮設部は、上下方向に間隔をあけて配置された複数の第二補助部材を有し、
前記各第一補助部材および前記各第二補助部材は、いずれも、少なくとも二本の前記縦筋に横架されている、ことを特徴とする鉄筋籠。
A rebar rod main body formed by combining a plurality of vertical bars and a plurality of horizontal bars in a grid pattern;
A rebar bar comprising a temporary part formed by extending a part of the plurality of vertical bars upward,
The reinforcing bar main body has a plurality of first auxiliary members arranged at intervals in the vertical direction,
The temporary part has a plurality of second auxiliary members arranged at intervals in the vertical direction,
Each said 1st auxiliary member and each said 2nd auxiliary member are horizontally mounted by the at least 2 said vertical reinforcement, Reinforcing rod.
請求項1に記載の鉄筋籠を掘削穴に建て込む方法であって、
第一支持部材と第二支持部材とを具備した建込装置を、前記掘削穴の開口縁部に設置しておき、
一の前記第一補助部材を前記第一支持部材に載置した状態で前記第一支持部材を下降させるステップと、他の前記第一補助部材を前記第二支持部材に載置した状態で前記第一支持部材を上昇させるステップとを繰り返すことで、前記鉄筋籠本体を掘削穴内に挿入し、
その後、一の前記第二補助部材を前記第一支持部材に載置した状態で前記第一支持部材を下降させるステップと、他の前記第二補助部材を前記第二支持部材に載置した状態で前記第一支持部材を上昇させるステップとを繰り返すことで、前記仮設部を掘削穴内に挿入する、ことを特徴とする鉄筋籠の建込方法。
A method for building a reinforcing bar rod according to claim 1 in a drilling hole,
A built-in device having a first support member and a second support member is installed at the opening edge of the excavation hole,
A step of lowering the first support member in a state in which one of the first auxiliary members is placed on the first support member, and a state in which the other first auxiliary member is placed on the second support member By repeating the step of raising the first support member, the reinforcing bar body is inserted into the excavation hole,
Thereafter, the step of lowering the first support member with one second auxiliary member placed on the first support member, and the state where the other second auxiliary member is placed on the second support member The step of raising the first support member is repeated to insert the temporary portion into the excavation hole.
JP2011111689A 2011-05-18 2011-05-18 Reinforcement rods and methods for installing them Expired - Fee Related JP5785775B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011111689A JP5785775B2 (en) 2011-05-18 2011-05-18 Reinforcement rods and methods for installing them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011111689A JP5785775B2 (en) 2011-05-18 2011-05-18 Reinforcement rods and methods for installing them

Publications (2)

Publication Number Publication Date
JP2012241400A true JP2012241400A (en) 2012-12-10
JP5785775B2 JP5785775B2 (en) 2015-09-30

Family

ID=47463422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011111689A Expired - Fee Related JP5785775B2 (en) 2011-05-18 2011-05-18 Reinforcement rods and methods for installing them

Country Status (1)

Country Link
JP (1) JP5785775B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113911901A (en) * 2021-09-09 2022-01-11 北京城建集团有限责任公司 Lifting device for steel reinforcement cage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124768A (en) * 1984-07-12 1986-02-03 株式会社大林組 Apparatus for hanging iron wire cage
JPH02147716A (en) * 1988-11-29 1990-06-06 Taisei Corp Locating method for reinforced cage and device
JP2001159134A (en) * 1999-12-02 2001-06-12 Kajima Corp Cage-building method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124768A (en) * 1984-07-12 1986-02-03 株式会社大林組 Apparatus for hanging iron wire cage
JPH02147716A (en) * 1988-11-29 1990-06-06 Taisei Corp Locating method for reinforced cage and device
JP2001159134A (en) * 1999-12-02 2001-06-12 Kajima Corp Cage-building method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113911901A (en) * 2021-09-09 2022-01-11 北京城建集团有限责任公司 Lifting device for steel reinforcement cage
CN113911901B (en) * 2021-09-09 2023-12-05 北京城建集团有限责任公司 Lifting equipment for reinforcement cage

Also Published As

Publication number Publication date
JP5785775B2 (en) 2015-09-30

Similar Documents

Publication Publication Date Title
KR101803353B1 (en) Structure for underground vertical extension in the building
KR102084829B1 (en) Top-down method using precast-concrete colum
CN104196163A (en) Two-direction pre-stressed prefabricated hollow concrete slab and manufacturing method thereof
JP5785776B2 (en) Built-in equipment
JP5785775B2 (en) Reinforcement rods and methods for installing them
CN210975840U (en) Movable inner supporting device for foundation pit supporting
KR101296856B1 (en) Reinforcement structure for wall of underground structure and construction method of underground structure using the same
CN110159323B (en) Construction method suitable for extra-large section underground chamber excavation and steel arch frame fixing
JP5187969B2 (en) Overhead viaduct construction equipment and construction method
KR20200122037A (en) The construction method using a exterio wall of undergound structure
CN111852516B (en) Limiting jacking device for tunnel portal shed tunnel steel frame and construction method thereof
CN109826173A (en) A kind of pile base construction method using stake top mobile platform
JP5558757B2 (en) Climbing crane refilling mechanism and floor climbing method
JP6391135B2 (en) How to install temporary pillars
CN110777848B (en) Construction method of movable support based on underground space development above subway
CN209873759U (en) Portable pile foundation construction platform
JP3741784B2 (en) Lifting platform
CN114215072B (en) Lifting type foundation pit construction platform and using method thereof
JP5960786B2 (en) Shield machine collection method in open shield method
JP2016044470A (en) Temporary column installation method
CN115387586B (en) Lifting platform for foundation pit reverse construction and construction method
KR101483939B1 (en) Excavation Propulsion Apparatus of Underground Concrete Structure on Segement Construction Base
CN220099903U (en) Steel protects a pile sinking three-dimensional direction stop device
CN217378909U (en) Subway station enclosure structure
KR20150018053A (en) Construction Method of Underground Concrete Structure on Segement Construction Base

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140515

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150127

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150324

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20150630

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20150727

R150 Certificate of patent or registration of utility model

Ref document number: 5785775

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees