JP2007138595A - Cutting removal construction method for underground skeleton - Google Patents

Cutting removal construction method for underground skeleton Download PDF

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JP2007138595A
JP2007138595A JP2005334860A JP2005334860A JP2007138595A JP 2007138595 A JP2007138595 A JP 2007138595A JP 2005334860 A JP2005334860 A JP 2005334860A JP 2005334860 A JP2005334860 A JP 2005334860A JP 2007138595 A JP2007138595 A JP 2007138595A
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partial
cutting
housing
skeleton
underground
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Koji Fujio
浩司 藤尾
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Concrete Coring Co Co Ltd
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Concrete Coring Co Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting removal construction method for an underground skeleton for improving work efficiency of cutting removal work by a simple facility. <P>SOLUTION: A channel-type line 31 is laid on an upper face of an upper floor board 11 of an existing skeleton 1 along the longitudinal direction of the existing skeleton 1, and chill tanks 32, 32, etc. gliding on the channel-type line 31 are arranged. A partial skeleton 2 formed by cutting the existing skeleton 1 is lifted by using superlifters 6, 6 arranged on an outer side in the lateral direction of the existing skeleton 1, loaded on the chill tanks 32, 32, etc., towed by a winch 34 along the channel-type line 31, conveyed up to an outlet 50 for the ground surface, and lifted on the ground by a crane. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、地下に埋設された躯体から切断された部分躯体を地上へ搬送し躯体を撤去する地下躯体の切断撤去工法に関する。   The present invention relates to a method for cutting and removing an underground enclosure in which a partial enclosure cut from an underground enclosure is transported to the ground and the enclosure is removed.

地下鉄用の軌道は、地下に埋設された鉄筋コンクリート製の躯体の内部に配されている。躯体は両側壁及び上床板を有し、例えば地下鉄構内におけるプラットホームの延伸増設、増幅、拡張、補修、補強、駅の新設等の工事に際して切断撤去される（特許文献１参照）。   The track for the subway is arranged inside a reinforced concrete frame buried underground. The frame has both side walls and an upper floor board, and is cut and removed during construction such as extending, expanding, amplifying, expanding, repairing, reinforcing, or newly installing a station in a subway yard (see Patent Document 1).

切断撤去の際は、撤去すべき躯体（以下、既設躯体という）の外部の地中に穴を掘設し、掘設した穴に、既設躯体を内包するよう新たな躯体（以下、新設躯体という）を設け、既設躯体と新設躯体との間に撤去作業用の作業空間を設けて既設躯体を切断し、切断された既設躯体を上床板の上側を通過させて地上へ搬送し、撤去する。
従来、切断された躯体の一部（以下、部分躯体という）は、新設躯体の上床板の内面（天井）に敷設されたホイスト式クレーンで吊り上げられ、天井に敷設されたホイストレールに吊下されて搬送されていた。
特公平４−２０４８０号公報 At the time of cutting and removing, a new body (hereinafter referred to as a new body) is created so that a hole is dug in the ground outside the body to be removed (hereinafter referred to as an existing body), and the existing body is included in the drilled hole. ), A working space for removal work is provided between the existing housing and the new housing, and the existing housing is cut, and the cut existing housing is transported to the ground through the upper floor plate and removed.
Conventionally, a part of the cut frame (hereinafter referred to as a partial frame) is lifted by a hoist crane laid on the inner surface (ceiling) of the upper floor plate of the new frame, and suspended by a hoist rail laid on the ceiling. Had been transported.
Japanese Patent Publication No. 4-20480

しかしながら、ホイスト式クレーンで吊り上げ、ホイストレールに吊り下げ可能な重量は一般に小さいため、既設躯体を細かく切断して部分躯体の重量を小さくする必要があり、作業性が悪いという問題があった。
この問題を解決するために、大きな重量に対応している大型のホイスト式クレーン及びホイストレールを用いる場合、設備のコストが上昇するという問題があった。 However, since the weight that can be lifted by a hoist type crane and hung on a hoist rail is generally small, it is necessary to cut an existing housing finely to reduce the weight of the partial housing, and there is a problem that workability is poor.
In order to solve this problem, when a large hoist type crane and hoist rail corresponding to a large weight are used, there is a problem that the cost of the equipment increases.

本発明は斯かる問題を解決するためになされたものであり、その主たる目的は、躯体を切断した部分躯体を、上床板の上面に設けられた搬送路に沿って滑走させて地上への出口まで搬送することにより、切断撤去作業の作業性を向上させることができる地下躯体の切断撤去工法を提供することにある。   The present invention has been made in order to solve such a problem, and a main object of the present invention is to slide a partial casing obtained by cutting the casing along a conveyance path provided on the upper surface of the upper floor board to exit to the ground. It is to provide a method for cutting and removing an underground frame that can improve the workability of the cutting and removing work.

本発明の他の目的は、躯体を切断した部分躯体を滑走体に搭載して、上床板の上面に敷設された線路上を滑走させて地上への出口まで搬送することにより、簡易な設備で切断撤去作業の作業性を向上させることができる地下躯体の切断撤去工法を提供することにある。   Another object of the present invention is to mount a partial casing cut from the casing on the sliding body, slide it on the track laid on the upper surface of the upper floor board, and transport it to the exit to the ground with simple equipment. An object of the present invention is to provide a method for cutting and removing an underground frame that can improve workability of cutting and removing work.

本発明の他の目的は、躯体を切断した部分躯体を、上床板の上面に敷設された円滑シート上を滑走させて地上への出口まで搬送することにより、更に簡易な設備で切断撤去作業の作業性を向上させることができる地下躯体の切断撤去工法を提供することにある。   Another object of the present invention is to carry out the cutting and removal work with simpler equipment by sliding the partial casing cut off the casing on the smooth sheet laid on the upper surface of the upper floor board and transporting it to the exit to the ground. An object of the present invention is to provide a method for cutting and removing an underground frame that can improve workability.

本発明の更に他の目的は、躯体を切断した部分躯体をジャッキで持ち上げて、上床板の上面に設けられた搬送路へ移動させることにより、一般的な設備で切断撤去作業の作業性を更に向上させることができる地下躯体の切断撤去工法を提供することにある。   Still another object of the present invention is to further improve the workability of the cutting and removing work with general equipment by lifting the partial housing cut from the housing with a jack and moving it to the conveyance path provided on the upper surface of the upper floor board. The object is to provide a method for cutting and removing underground structures that can be improved.

第１発明に係る地下躯体の切断撤去工法は、地下に埋設され、上床板及び両側壁を有する躯体を切断し、切断した部分躯体を地上へ搬送することによって前記躯体を撤去する地下躯体の切断撤去工法において、前記上床板の上側に撤去作業可能な空間を設け、前記上床板の上面に、前記躯体の長手方向に沿う搬送路を設け、切断した部分躯体を、前記搬送路に沿って滑走させて地上への出口まで搬送することを特徴とする。   The method of cutting and removing the underground frame according to the first aspect of the present invention is a method of cutting an underground frame embedded in the underground, cutting the frame having an upper floor board and both side walls, and removing the frame by conveying the cut partial frame to the ground. In the removal method, a space capable of removal work is provided on the upper side of the upper floor board, a conveyance path along the longitudinal direction of the casing is provided on the upper surface of the upper floor board, and the cut partial casing is slid along the conveyance path It is made to convey to the exit to the ground.

第２発明に係る地下躯体の切断撤去工法は、前記搬送路を、前記上面に敷設された線路で構成し、前記線路を滑走すべき滑走体に前記部分躯体を搭載し、前記滑走体に搭載された前記部分躯体を牽引又は押圧して搬送することを特徴とする。   According to a second aspect of the present invention, there is provided a method for cutting and removing an underground gantry, wherein the transport path is configured by a track laid on the upper surface, the partial skeleton is mounted on a planing body to be slid on the track, and is mounted on the planing body. The partial housing is transported by pulling or pressing.

第３発明に係る地下躯体の切断撤去工法は、前記搬送路として、前記部分躯体に対する摩擦が前記上面よりも小さく、前記部分躯体を搭載すべき円滑シートを前記上面に敷設し、前記円滑シートに搭載された前記部分躯体を牽引又は押圧して搬送することを特徴とする。   According to a third aspect of the present invention, there is provided a method for cutting and removing the underground frame, wherein the conveying path has a smaller friction with respect to the partial frame than the upper surface, and a smooth sheet on which the partial frame is to be mounted is laid on the upper surface. The mounted partial housing is pulled or pressed to be conveyed.

第４発明に係る地下躯体の切断撤去工法は、前記両側壁の外側に撤去作業可能な空間を設け、設けられた空間にジャッキを配し、前記部分躯体を、前記ジャッキで持ち上げて前記搬送路へ移動させることを特徴とする。   According to a fourth aspect of the present invention, there is provided a method for cutting and removing the underground frame, wherein a space is provided on the outside of the both side walls, and a jack is disposed in the provided space, and the partial frame is lifted by the jack and the transfer path It is made to move to.

第１発明の地下躯体の切断撤去工法による場合、上床板の上側に、撤去作業可能な空間（以下、作業区間という）を設け、躯体（既設躯体）を切断してなる部分躯体を、既設躯体の上床板の上面に、躯体の長手方向に沿って設けられた搬送路に乗せ、この搬送路に沿って滑走させて地上への出口まで搬送する。このため、例えばホイストレールを用いて新設躯体の天井から吊り下げて搬送する場合よりも、躯体を大きく切断し、大きい重量の部分躯体を搬送することができる。この結果、切断撤去作業の作業性を向上させることができる。   In the case of using the method for cutting and removing the underground frame of the first invention, a space that can be removed (hereinafter referred to as a work section) is provided above the upper floor board, and the partial frame formed by cutting the frame (existing frame) is replaced with the existing frame. It is placed on the upper surface of the upper floor board on a conveyance path provided along the longitudinal direction of the housing, and is slid along this conveyance path and conveyed to the exit to the ground. For this reason, for example, a housing can be cut | disconnected largely and the partial housing of a heavy weight can be conveyed rather than the case where it hangs and conveys from the ceiling of a new housing using a hoist rail. As a result, the workability of the cutting and removing work can be improved.

第２発明の地下躯体の切断撤去工法による場合、搬送路として、上床板の上面に、溝型線路のような線路を敷設し、この線路上を、チルタンクのような滑走体に滑走させるため、部分躯体の搬送設備を簡易に構成することができる。この滑走体に、躯体を切断してなる部分躯体を搭載し、溝型線路に沿って牽引又は押圧することによって部分躯体を搬送路に沿って滑走させて地上への出口まで搬送するため、部分躯体を容易に搬送することができる。   In the case of the method of cutting and removing the underground frame of the second invention, as a conveyance path, on the upper surface of the upper floor board, a track such as a grooved track is laid, and on this track, a slide body such as a chill tank is slid, The transportation equipment for the partial housing can be configured easily. In order to transport the partial chassis along the transport path by pulling or pressing along the groove-type track and transporting it to the exit to the ground, the partial chassis formed by cutting the chassis is mounted on this sliding body. The housing can be easily transported.

第３発明の地下躯体の切断撤去工法による場合、上床板の上面に敷設されたテフロン（登録商標）シートのような円滑シートで搬送路を構成するため、部分躯体の搬送設備を簡易に設けることができる。この円滑シートに、躯体を切断してなる部分躯体を搭載して牽引又は押圧することによって部分躯体を搬送路に沿って滑走させて地上への出口まで搬送するため、部分躯体を容易に搬送することができる。   In the case of the underground frame cutting and removing method according to the third aspect of the present invention, since the conveyance path is constituted by a smooth sheet such as a Teflon (registered trademark) sheet laid on the upper surface of the upper floor board, a conveyance system for the partial frame is simply provided. Can do. By mounting or pulling the partial casing formed by cutting the casing on this smooth sheet, the partial casing is slid along the transport path and transported to the exit to the ground, so the partial casing is easily transported. be able to.

第４発明の地下躯体の切断撤去工法による場合、例えば新設躯体の天井に設けられたホイスト式クレーンが吊り上げるよりも一般的に重い物体を持ち上げることができるスーパーリフターのようなジャッキを既設躯体の両側壁の外側の作業区間に配する。このジャッキで、躯体を切断してなる部分躯体を持ち上げて、上床板の上面に設けられた搬送路へ移動させ、移動させた部分躯体を搬送路に沿って滑走させて地上への出口まで搬送する。このため、ホイスト式クレーンを用いる場合よりも、躯体を大きく切断し、大きい重量の部分躯体を搬送することができる。この結果、特別な重機を用いず一般的な設備で切断撤去作業の作業性を更に向上させることができる。   In the case of the method for cutting and removing the underground frame according to the fourth aspect of the invention, for example, a jack like a super lifter capable of lifting a generally heavy object than a hoist crane provided on the ceiling of the new frame is lifted on both sides of the existing frame. Place in the work section outside the wall. With this jack, lift the partial housing made by cutting the housing, move it to the transport path provided on the upper surface of the upper floor board, and slide the moved partial housing along the transport path to the exit to the ground To do. For this reason, compared with the case where a hoist type crane is used, a housing can be cut | disconnected largely and a partial housing with a heavy weight can be conveyed. As a result, it is possible to further improve the workability of the cutting / removing work with general equipment without using special heavy machinery.

以下、本発明を、その実施の形態を示す図面に基づいて詳述する。   Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.

実施の形態 １．
図１は、本発明の実施の形態１に係る地下躯体の切断撤去工法を説明するための正面図である。また、図２は、搬送路３の構成を示す拡大正面図である。
図中Ｇは地面であり、地面Ｇの地下に、鉄筋コンクリート製の既設躯体１が埋設されている。既設躯体１は、長手方向が地下鉄の走行すべき方向に沿う横断面略矩形の筒状である。また、既設躯体１は、側壁（構内壁）１２，１２、天井である上床板１１、床である下床板１４、及び横方向を略２分割する位置に設けられ、上床板１１及び下床板１４に介在する支持柱１３で構成されている。 Embodiment 1.
FIG. 1 is a front view for explaining a method for cutting and removing an underground frame according to Embodiment 1 of the present invention. FIG. 2 is an enlarged front view showing the configuration of the conveyance path 3.
In the figure, G is the ground, and an existing frame 1 made of reinforced concrete is buried in the basement of the ground G. The existing housing 1 has a cylindrical shape whose longitudinal direction is substantially rectangular in cross section along the direction in which the subway is to run. In addition, the existing frame 1 is provided at side walls (premise walls) 12, 12, an upper floor board 11 that is a ceiling, a lower floor board 14 that is a floor, and a position that divides the horizontal direction into two substantially, and an upper floor board 11 and a lower floor board 14. It is comprised by the support pillar 13 interposed in.

支持柱１３の両側方かつ下床板１４の上面には、地下鉄用の軌道としてレールＬ，Ｌ，…が一対ずつ敷設されている。また、支持柱１３の両側方に突出するようにして図示しないプラットホームが設けられている。図中Ｗは、工事中にも地下鉄が安全に走行するための縮小建築限界である。
以下では、プラットホームの延伸増設、増幅、拡張等の工事に際して既設躯体１の上床板１１を切断撤去する場合について主に説明する。 A pair of rails L, L,... Are laid on both sides of the support pillar 13 and on the upper surface of the lower floor board 14 as subway tracks. Further, a platform (not shown) is provided so as to protrude on both sides of the support column 13. In the figure, W is a reduced building limit for the subway to travel safely even during construction.
Below, the case where the upper floor board 11 of the existing housing 1 is cut and removed at the time of construction such as extending, expanding, and expanding the platform will be mainly described.

まず、地面Ｇの地下に穴を掘設し、既設躯体１を内包するように新設躯体５を形成する。
形成された新設躯体５は、既設躯体１と同様に、長手方向が地下鉄の走行すべき方向に沿う横断面略矩形の筒状である。また、新設躯体５は、天井である上床板５１、及び側壁（構内壁）５２，５２を備える。
新設躯体５の上床板５１及び側壁５２，５２夫々の内面と既設躯体１の上床板１１及び側壁１２，１２の外面との間には撤去作業用の作業空間Ｓが設けられる。つまり、上床板１１の上側及び側壁１２，１２の外側夫々に撤去作業可能な空間が設けられる。
新設躯体５の上床板５１の内面には、例えば既設躯体１の側壁１２，１２の切断撤去に用いられるホイスト式クレーン７，７，…が設置される。 First, a hole is dug in the basement of the ground G, and the new housing 5 is formed so as to include the existing housing 1.
Like the existing housing 1, the new housing 5 thus formed has a cylindrical shape whose longitudinal direction is substantially rectangular along the direction in which the subway is to travel. Further, the new housing 5 includes an upper floor board 51 which is a ceiling, and side walls (interior walls) 52 and 52.
A work space S for removal work is provided between the inner surfaces of the upper floor plate 51 and the side walls 52 and 52 of the new housing 5 and the outer surfaces of the upper floor plate 11 and the side walls 12 and 12 of the existing housing 1. That is, the space which can be removed is provided in the upper side of the upper floor board 11, and the outer side of the side walls 12 and 12, respectively.
On the inner surface of the upper floor plate 51 of the new housing 5, hoist type cranes 7, 7,... Used for cutting and removing the side walls 12, 12 of the existing housing 1, for example, are installed.

側壁１２，１２の外面近傍夫々には門型のジャッキとしてのスーパーリフター６，６が配される。各スーパーリフター６は、その長手方向が既設躯体１の長手方向に沿う移動用のレール６０を下部に備え、６０トンの物体を載置して上下動可能なジャッキ部６１を上部に備える。本実施の形態においては、２台のスーパーリフター６，６のジャッキ部６１，６１で、既設躯体１から切断された部分躯体２を持ち上げ、ホイスト式クレーン７，７，…は用いない。   Superlifters 6 and 6 as gate-type jacks are arranged near the outer surfaces of the side walls 12 and 12, respectively. Each super lifter 6 is provided with a rail 60 for movement along the longitudinal direction of the existing housing 1 in the lower part, and a jack part 61 on which an object of 60 tons can be moved up and down. In the present embodiment, the jack sections 61, 61 of the two super lifters 6, 6 lift the partial casing 2 cut from the existing casing 1, and the hoist type cranes 7, 7, ... are not used.

既設躯体１の上床板１１の上面は、部分躯体２を搬送する搬送路３として用いられる。このために、上床板１１の上面の横方向端部、具体的には側壁１２，１２の上方には、横断面Ｕ字状の溝型鋼を複数並置してなる溝型線路３１，３１が、各溝型線路３１の長手方向が既設躯体１の長手方向に沿うように敷設される。各溝型線路３１，３１上には、外力を与えられることによって溝型線路３１，３１上を滑走するチルタンク３２，３２，…が配される。各チルタンク３２は、上面３２ａに１２トンの物体を載置して滑走移動可能であり、このため、前後左右に配された４個のチルタンク３２，３２，…で部分躯体２を支持する。   The upper surface of the upper floor plate 11 of the existing housing 1 is used as a transport path 3 for transporting the partial housing 2. For this purpose, groove-type lines 31, 31 formed by juxtaposing a plurality of groove-shaped steels having a U-shaped cross section on the lateral end of the upper surface of the upper floor plate 11, specifically, above the side walls 12, 12 Each groove-type line 31 is laid so that the longitudinal direction thereof is along the longitudinal direction of the existing housing 1. On each of the groove-type lines 31, 31, chill tanks 32, 32,... That slide on the groove-type lines 31, 31 when external force is applied are arranged. Each chill tank 32 is slidable by placing an object of 12 tons on the upper surface 32a. Therefore, the partial casing 2 is supported by four chill tanks 32, 32,.

図３及び図４は、部分躯体２の上床板１１への持ち上げを説明するための側面図及び正面図である。
地面Ｇには、部分躯体２を搬出するための孔が設けられ、この孔と位置を合わせて、新設躯体５の上床板５１に、地上への出口５０が設けられる。 3 and 4 are a side view and a front view for explaining the lifting of the partial housing 2 to the upper floor plate 11.
A hole for carrying out the partial housing 2 is provided in the ground G, and an outlet 50 to the ground is provided on the upper floor plate 51 of the new housing 5 in alignment with the hole.

既設躯体１の上床板１１は、例えば特許文献１で開示されているようなワイヤソーを用いた切断工法で、側壁１２，１２の上部及び支持柱１３の上部を含む転倒Ｅ字状の部分躯体２，２，…に切断される。切断された部分躯体２は、上床板１１であった基部２１と、側壁１２，１２の上部であった左右の脚部２２，２２と、支持柱１３の上部であった脚部２３とで構成される。部分躯体２の重量は、約３７．４トンである。
部分躯体２及び側壁１２，１２と、部分躯体２，２，…同士とには、切断後の部分躯体２，２，…のズレ止めのためのズレ止め金具２０，２０，…が打ち込まれている。搬送すべき部分躯体２のズレ止め金具２０，２０，…は、搬送直前に抜き取られる。 The upper floor plate 11 of the existing housing 1 is a cutting method using, for example, a wire saw as disclosed in Patent Document 1, and a falling E-shaped partial housing 2 including the upper portions of the side walls 12 and 12 and the upper portions of the support columns 13 is used. , 2... The cut partial housing 2 includes a base portion 21 that is the upper floor board 11, left and right leg portions 22 and 22 that are upper portions of the side walls 12 and 12, and leg portions 23 that are upper portions of the support pillars 13. Is done. The weight of the partial housing 2 is about 37.4 tons.
.. Are inserted into the partial housing 2 and the side walls 12, 12 and the partial housings 2, 2,... Yes. The shift stoppers 20, 20,... Of the partial housing 2 to be transported are extracted just before transport.

次に、上床板１１上に溝型線路３１，３１を敷設する。溝型線路３１，３１は、部分躯体２の切り出し位置側から出口５０の下側まで充分な長さで敷設される。ただし、部分躯体２，２，…の搬送に伴って上床板５１の長さが短くなるため、搬送すべき部分躯体２の上面に敷設されている溝型線路３１，３１を構成する溝型鋼を適宜に除去することによって溝型線路３１，３１の長さが調整される。
部分躯体２の切り出し位置側の逆側の溝型線路３１，３１近傍には、部分躯体２の牽引用のウインチ３４が配される。 Next, the groove-type lines 31 and 31 are laid on the upper floor board 11. The groove-type lines 31 are laid with a sufficient length from the cutout position side of the partial housing 2 to the lower side of the outlet 50. However, since the length of the upper floor board 51 is shortened along with the conveyance of the partial housings 2, 2,..., The grooved steel constituting the grooved lines 31 and 31 laid on the upper surface of the partial housing 2 to be conveyed. The lengths of the groove-type lines 31 and 31 are adjusted by removing them as appropriate.
A winch 34 for pulling the partial casing 2 is disposed in the vicinity of the groove-type lines 31 and 31 on the opposite side of the partial casing 2 on the cut-out position side.

撤去作業者は、溝型線路３１，３１上の前後左右に互いに適長離隔させて４個のチルタンク３２，３２，…を予め配する。
次に、撤去作業者は、スーパーリフター６，６で部分躯体２を持ち上げるために、部分躯体２の側面から横方向に突設するように、ブラケット金具６２，６２を取り付ける。ブラケット金具６２，６２の底面はスーパーリフター６，６のジャッキ部６１，６１の上面に対向する。
更に、撤去作業者は、スーパーリフター６，６のジャッキ部６１，６１でブラケット金具６２，６２を押し上げることによって、脚部２２，２２，２３の下面が上床板１１上面の高さよりも高くなるよう白抜矢符Ａ方向に部分躯体２を持ち上げる。更に、部分躯体２を持ち上げた状態でジャッキ部６１，６１をレール６０，６０に沿って白抜矢符Ｂ方向へ移動させる。 The removal operator arranges four chill tanks 32, 32,.
Next, the removal operator attaches bracket fittings 62 and 62 so as to project from the side surface of the partial casing 2 in order to lift the partial casing 2 with the super lifters 6 and 6. The bottom surfaces of the bracket fittings 62, 62 are opposed to the upper surfaces of the jack portions 61, 61 of the super lifters 6, 6.
Further, the removal operator pushes up the bracket fittings 62, 62 with the jack portions 61, 61 of the super lifters 6, 6, so that the lower surfaces of the leg portions 22, 22, 23 are higher than the height of the upper surface of the upper floor board 11. Lift the partial housing 2 in the direction of the white arrow A. Furthermore, the jack parts 61 and 61 are moved along the rails 60 and 60 in the direction of the white arrow B while the partial housing 2 is lifted.

図５及び図６は、部分躯体２の出口５０への搬送を説明するための側面図及び正面図である。
撤去作業者は、更にジャッキ部６１，６１を移動させて、脚部２２，２２の下面が４個のチルタンク３２，３２，…の上面３２ａの真上に位置した場合に部分躯体２を下ろして、部分躯体２をチルタンク３２，３２，…に載置する。このとき、図２に示すように、各チルタンク３２に脚部２２が接触する。また。脚部２３は上床板１１上面から離隔する。
撤去作業者は、ジャッキ部６１，６１を部分躯体２から離隔させる。更に、部分躯体２からブラケット金具６２，６２を取り外す。 5 and 6 are a side view and a front view for explaining the conveyance of the partial housing 2 to the outlet 50. FIG.
The removal operator further moves the jack portions 61 and 61 to lower the partial housing 2 when the lower surfaces of the leg portions 22 and 22 are positioned directly above the upper surfaces 32a of the four chill tanks 32, 32,. The partial housing 2 is placed on the chill tanks 32, 32,. At this time, as shown in FIG. 2, the leg portion 22 contacts each chill tank 32. Also. The leg portion 23 is separated from the upper surface of the upper floor board 11.
The removal operator separates the jack portions 61, 61 from the partial housing 2. Further, the bracket fittings 62 and 62 are removed from the partial housing 2.

更にまた、チルタンク３２，３２，…に載置された部分躯体２に滑車を用いてなる連結具３３を取り付け、連結具３３に牽引用のワイヤ３５を取り付けて、ウインチ３４でワイヤ３５を巻き取ることによって、チルタンク３２，３２，…に溝型線路３１，３１上を滑走させ、白抜矢符Ｂ方向へ部分躯体２を搬送する。   Further, a connecting tool 33 using a pulley is attached to the partial housing 2 placed on the chill tanks 32, 32,..., A pulling wire 35 is attached to the connecting tool 33, and the wire 35 is wound up by the winch 34. As a result, the chill tanks 32, 32,... Slide on the groove-type lines 31, 31, and convey the partial housing 2 in the direction of the white arrow B.

出口５０下方まで搬送された部分躯体２は、図示しない門型クレーンによって白抜矢符Ｃ方向へ吊り上げられ、地面Ｇ上に載置されて、更に小さい部分躯体（１０トン以下）に切断されて、ダンプトラックに載置され、工事現場から搬送撤去される。   The partial housing 2 conveyed to the lower side of the outlet 50 is lifted in the direction of the white arrow C by a gate crane (not shown), placed on the ground G, and cut into a smaller partial housing (10 tons or less). It is placed on a dump truck and removed from the construction site.

以上のような地下躯体の切断撤去工法においては、一般的にスーパーリフター６の持ち上げ重量よりも吊り上げ重量が小さいホイスト式クレーン７を用いることがないため、既設躯体１を大きく切断することができ、作業性を向上させることができる。また、スーパーリフター６，６という一般的なジャッキを用いることができ、しかも搬送路３の構成が簡易であるため、既設躯体１の切断撤去のために大型で複雑な設備を準備する必要がなく、設備のコストを低減させることができる。   In the above-mentioned underground housing cutting and removing method, since the hoist type crane 7 having a lifting weight smaller than the lifting weight of the super lifter 6 is generally not used, the existing housing 1 can be largely cut, Workability can be improved. Moreover, since the general jacks of the super lifters 6 and 6 can be used and the structure of the transport path 3 is simple, it is not necessary to prepare a large and complicated facility for cutting and removing the existing housing 1. , Equipment costs can be reduced.

実施の形態 ２．
図７は、本発明の実施の形態２に係る地下躯体の切断撤去工法を説明するための正面図である。
本実施の形態においては、既設躯体１の上床板１１の上面に、実施の形態１の搬送路３の代わりに、搬送路４が設けられる。このために、上床板１１の上面の横方向端部及び中央部、具体的には側壁１２，１２及び支持柱１３夫々の上方には、細長い矩形状に形成された円滑シートとしてのテフロンシート４１，４１，４１が、長手方向が既設躯体１の長手方向に沿うように敷設される。 Embodiment 2. FIG.
FIG. 7 is a front view for explaining a method for cutting and removing an underground frame according to Embodiment 2 of the present invention.
In the present embodiment, a transport path 4 is provided on the upper surface of the upper floor plate 11 of the existing housing 1 instead of the transport path 3 of the first embodiment. For this purpose, a Teflon sheet 41 as a smooth sheet formed in an elongated rectangular shape is formed at the lateral end and center of the upper surface of the upper floor board 11, specifically above the side walls 12, 12 and the support pillar 13. , 41, 41 are laid such that the longitudinal direction thereof is along the longitudinal direction of the existing casing 1.

撤去作業者は、スーパーリフター６，６を用いて部分躯体２を持ち上げ、部分躯体２の脚部２２，２２，２３の下面が３本のテフロンシート４１，４１，４１の真上に位置した場合に部分躯体２を下ろして、部分躯体２をテフロンシート４１，４１，４１上に載置する。このとき、脚部２２，２２，２３はテフロンシート４１，４１，４１に接触する。   The removal operator lifts the partial housing 2 using the super lifters 6 and 6, and the lower surfaces of the leg portions 22, 22, and 23 of the partial housing 2 are positioned directly above the three Teflon sheets 41, 41, 41. Then, the partial casing 2 is lowered, and the partial casing 2 is placed on the Teflon sheets 41, 41, 41. At this time, the leg portions 22, 22, 23 are in contact with the Teflon sheets 41, 41, 41.

各テフロンシート４１の表面は、部分躯体２に対する摩擦が上床板１１の上面よりも小さい。このため、チルタンク３２，３２，…のような滑走体を用いることなく、実施の形態１と同様にして、部分躯体２を牽引して搬送することができる。
各テフロンシート４１の長さの調節は、搬送すべき部分躯体２の上面に敷設されているテフロンシート４１を巻き取ることによって行なう。
その他、実施の形態１に対応する部分には同一符号を付してそれらの説明を省略する。 The surface of each Teflon sheet 41 has a smaller friction with respect to the partial housing 2 than the upper surface of the upper floor plate 11. Therefore, the partial housing 2 can be pulled and transported in the same manner as in the first embodiment without using a sliding body such as the chill tanks 32, 32,.
The length of each Teflon sheet 41 is adjusted by winding the Teflon sheet 41 laid on the upper surface of the partial casing 2 to be transported.
Other parts corresponding to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

以上のような地下躯体の切断撤去工法は、切断撤去のための設備が更に簡易である。
なお、地下鉄の構内に限らず、例えばトンネルの拡張工事のために本発明の工法を用いてもよい。また、牽引ではなく押圧によって部分躯体２を搬送してもよい。 In the above-described method of cutting and removing the underground frame, the equipment for cutting and removing is simpler.
The construction method of the present invention may be used not only for the subway premises but also for tunnel expansion work, for example. Moreover, you may convey the partial housing 2 not by pulling but by a press.

本発明の実施の形態１に係る地下躯体の切断撤去工法を説明するための正面図である。It is a front view for demonstrating the cutting and removal construction method of the underground frame which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る地下躯体の切断撤去工法における搬送路の構成を示す拡大正面図である。It is an enlarged front view which shows the structure of the conveyance path in the cutting removal method of the underground frame which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る地下躯体の切断撤去工法における部分躯体の上床板への持ち上げを説明するための側面図である。It is a side view for demonstrating the raising to the upper floor board of the partial frame in the cutting and removal construction method of the underground frame which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る地下躯体の切断撤去工法における部分躯体の上床板への持ち上げを説明するための正面図である。It is a front view for demonstrating the raising to the upper floor board of the partial frame in the cutting and removal construction method of the underground frame which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る地下躯体の切断撤去工法における部分躯体の出口への搬送を説明するための側面図である。It is a side view for demonstrating conveyance to the exit of the partial frame in the cutting and removal construction method of the underground frame which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る地下躯体の切断撤去工法における部分躯体の出口への搬送を説明するための正面図である。It is a front view for demonstrating conveyance to the exit of the partial frame in the cutting removal method of the underground frame which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る地下躯体の切断撤去工法を説明するための正面図である。It is a front view for demonstrating the cutting and removal construction method of the underground frame which concerns on Embodiment 2 of this invention.

符号の説明Explanation of symbols

１ 既設躯体（躯体）
１１ 上床板
１２ 側壁
２ 部分躯体
３，４ 搬送路
３１ 溝型線路（線路）
３２ チルタンク（滑走体）
４１ テフロンシート（円滑シート）
５０ 出口
６ スーパーリフター（ジャッキ）
Ｓ 作業空間（撤去作業可能な空間） 1 Existing frame (frame)
11 Upper floor board 12 Side wall 2 Partial frame 3, 4 Conveyance path 31 Groove type track (track)
32 Chill tank (sliding body)
41 Teflon sheet (smooth sheet)
50 Exit 6 Super lifter (jack)
S Work space (space where removal work is possible)

Claims (4)

地下に埋設され、上床板及び両側壁を有する躯体を切断し、
切断した部分躯体を地上へ搬送することによって前記躯体を撤去する地下躯体の切断撤去工法において、
前記上床板の上側に撤去作業可能な空間を設け、
前記上床板の上面に、前記躯体の長手方向に沿う搬送路を設け、
切断した部分躯体を、前記搬送路に沿って滑走させて地上への出口まで搬送することを特徴とする地下躯体の切断撤去工法。 Embedded in the basement, cutting the frame with the upper floor board and both side walls,
In the method of cutting and removing the underground skeleton that removes the skeleton by conveying the cut partial skeleton to the ground,
Provide a space that can be removed on the upper floor plate,
On the upper surface of the upper floor plate, a conveyance path is provided along the longitudinal direction of the casing,
A method of cutting and removing an underground skeleton, wherein the cut partial skeleton is slid along the conveyance path and conveyed to an exit to the ground. 前記搬送路を、前記上面に敷設された線路で構成し、
前記線路を滑走すべき滑走体に前記部分躯体を搭載し、
前記滑走体に搭載された前記部分躯体を牽引又は押圧して搬送することを特徴とする請求項１に記載の地下躯体の切断撤去工法。 The transport path is constituted by a track laid on the upper surface,
The partial housing is mounted on a sliding body to be slid on the track,
The method for cutting and removing an underground skeleton according to claim 1, wherein the partial skeleton mounted on the sliding body is pulled or pressed to be conveyed. 前記搬送路として、前記部分躯体に対する摩擦が前記上面よりも小さく、前記部分躯体を搭載すべき円滑シートを前記上面に敷設し、
前記円滑シートに搭載された前記部分躯体を牽引又は押圧して搬送することを特徴とする請求項１に記載の地下躯体の切断撤去工法。 As the conveyance path, the friction with respect to the partial housing is smaller than the upper surface, and a smooth sheet on which the partial housing is to be mounted is laid on the upper surface,
The method for cutting and removing the underground skeleton according to claim 1, wherein the partial skeleton mounted on the smooth sheet is pulled or pressed to be conveyed. 前記両側壁の外側に撤去作業可能な空間を設け、
設けられた空間にジャッキを配し、
前記部分躯体を、前記ジャッキで持ち上げて前記搬送路へ移動させることを特徴とする請求項１乃至３の何れか一項に記載の地下躯体の切断撤去工法。 A space is provided on the outside of the both side walls to allow removal work,
Place a jack in the space provided,
The method of cutting and removing an underground skeleton according to any one of claims 1 to 3, wherein the partial skeleton is lifted by the jack and moved to the conveyance path.
JP2005334860A 2005-11-18 2005-11-18 Cutting removal construction method for underground skeleton Pending JP2007138595A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021008718A (en) * 2019-06-28 2021-01-28 鹿島建設株式会社 Concrete wall removing device and concrete wall removing method
JP2021085275A (en) * 2019-11-29 2021-06-03 鹿島建設株式会社 Base pushing jack facility in box body propulsion method and box body propulsion method using thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021008718A (en) * 2019-06-28 2021-01-28 鹿島建設株式会社 Concrete wall removing device and concrete wall removing method
JP7249216B2 (en) 2019-06-28 2023-03-30 鹿島建設株式会社 CONCRETE WALL REMOVAL DEVICE AND CONCRETE WALL REMOVAL METHOD
JP2021085275A (en) * 2019-11-29 2021-06-03 鹿島建設株式会社 Base pushing jack facility in box body propulsion method and box body propulsion method using thereof
JP7093930B2 (en) 2019-11-29 2022-07-01 鹿島建設株式会社 Main push jack equipment in the box propulsion method and the box propulsion method using it

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