JP2018003319A - Cutter of concrete member and dismantling method of concrete member - Google Patents

Cutter of concrete member and dismantling method of concrete member Download PDF

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JP2018003319A
JP2018003319A JP2016127726A JP2016127726A JP2018003319A JP 2018003319 A JP2018003319 A JP 2018003319A JP 2016127726 A JP2016127726 A JP 2016127726A JP 2016127726 A JP2016127726 A JP 2016127726A JP 2018003319 A JP2018003319 A JP 2018003319A
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concrete member
wire saw
cutting device
pulleys
cutting
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JP6914011B2 (en
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奥山　信博
Nobuhiro Okuyama
信博 奥山
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings

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  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a cutter of a concrete member which can suitably cut and dismantle an RC and/or SRC-member, and a dismantling method of the concrete member.SOLUTION: In a method for dismantling a vertically-erected RC or SRC- member 1, a wire saw 11 is made to circulate and turn by using a wire saw cutter A, the concrete member 1 is cut by notching it by a draw/cut method, a flange part 12a of a reinforcing bar or a steel frame 12 at this side of the concrete member 1 remains, cutting work by the wire saw cutter A is finished in a state that the concrete member 1 can self-stand, and the concrete member 1 is pulled down to this side by gripping it to dismantle the concrete member 1.SELECTED DRAWING: Figure 1

Description

本発明は、ＲＣ造（鉄筋コンクリート造）やＳＲＣ造（鉄骨鉄筋コンクリート造）などのコンクリート部材の切断装置及びコンクリート部材の解体方法に関する。   The present invention relates to a cutting apparatus for concrete members such as RC structures (reinforced concrete structures) and SRC structures (steel reinforced concrete structures), and a method for dismantling concrete members.

ＲＣ造やＳＲＣ造などの構造物の上下方向に立設する柱などのコンクリート部材を解体する際には、破砕工法、引き倒し工法が多用され、例えば、図２に示すように、コンクリート部材１の下端部側のコンクリートをブレーカなどの削岩機を用いて先行破壊し、露出した鉄筋や鉄骨をガス溶断によって切断する。   When dismantling concrete members such as columns standing up and down in a structure such as RC structure or SRC structure, a crushing method and a pulling method are frequently used. For example, as shown in FIG. The concrete on the lower end side of the steel is pre-destructed using a rock drill such as a breaker, and the exposed rebar and steel frame are cut by gas fusing.

このとき、鉄筋や鉄骨を完全に溶断せず、一部の鉄筋や鉄骨のフランジ部を残すようにガス溶断を行ってコンクリート部材１を自立可能な状態にし、重機でコンクリート部材１の上端部側を把持して引き倒す。コンクリート部材１を引き倒した段階で残した一部の鉄筋や鉄骨のフランジ部を切断し、完全に分離させる。   At this time, the rebar and the steel frame are not completely melted, and the concrete member 1 is made self-supporting by gas fusing so as to leave a part of the reinforcing bar and the flange of the steel frame. Hold and pull down. A part of the reinforcing bars and the flanges of the steel frame left when the concrete member 1 is pulled down are cut and completely separated.

この場合、構造物内側（手前側）の一部の鉄筋や鉄骨のフランジ部を最終段階まで残すようにし、引き倒し方向を構造物内側にして柱などのコンクリート部材１を解体することで、外壁２や養生足場等が設けられた構造物外側にコンクリート部材１が転倒することを防止できる。   In this case, part of the reinforcing bars and steel flanges on the inner side (front side) of the structure are left until the final stage, and the concrete member 1 such as a pillar is dismantled with the pulling direction on the inner side of the structure. 2 and the concrete member 1 can be prevented from falling to the outside of the structure provided with a curing scaffold or the like.

しかしながら、上記の解体方法においては、ブレーカなどの破砕機によるコンクリート等の破壊時やコンクリート部材の引き倒し時に大きな騒音や振動、大量の粉じんが発生する。また、柱や外壁、養生足場などで囲まれた構造物外側の狭隘な場所で鉄筋や鉄骨のガス溶断作業を行うことになる。すなわち、作業環境が悪い中で火気を使用することになる。   However, in the above dismantling method, large noise, vibration, and a large amount of dust are generated when concrete is broken by a crusher such as a breaker or when a concrete member is pulled down. In addition, gas cutting work of reinforcing bars and steel frames is performed in a narrow area outside the structure surrounded by columns, outer walls, curing scaffolds, and the like. That is, fire is used in a poor working environment.

これに対し、本願の出願人は、ワイヤーソーを押し切り方式で使用可能に構成したコンクリート部材の切断装置、これを用いたコンクリート部材の解体方法の発明について特許出願を行っている（例えば、特許文献１、特許文献２参照）。   On the other hand, the applicant of the present application has applied for a patent on the invention of a concrete member cutting apparatus configured to be able to use a wire saw by a press-cut method, and a method for dismantling a concrete member using the same (for example, patent document) 1, see Patent Document 2).

この解体方法で用いる切断装置は、例えば、油圧ショベルなどの建設作業機のアーム先端に着脱可能に取り付けられたガイドフレームと、ガイドフレームに支持され、駆動源によって回転駆動する駆動プーリー、ガイドプーリー、前後方向に進退自在にガイドフレームに支持された推進プーリー及びテンションプーリーの複数のプーリー（シーブ）と、これらプーリーに巻き掛けられた無端ループ状のワイヤーソーとからなるワイヤーソーユニット（ワイヤーソー機構）を備えて構成されている。   The cutting device used in this dismantling method is, for example, a guide frame that is detachably attached to the tip of an arm of a construction work machine such as a hydraulic excavator, a drive pulley that is supported by the guide frame and that is driven to rotate by a drive source, a guide pulley, A wire saw unit (wire saw mechanism) consisting of a plurality of pulleys (sheaves) of a propulsion pulley and a tension pulley supported by a guide frame so as to be movable back and forth in the front-rear direction, and an endless loop wire saw wound around these pulleys It is configured with.

この切断装置でコンクリート部材を切断する際には、建設作業機のアーム操作によって切断対象物のコンクリート部材にワイヤーソーの一部と反力受け装置を当接させた段階で駆動プーリーを回転駆動させ、ワイヤーソーを各プーリーで支持しながら循環回動させる。そして、推進プーリー駆動手段によって推進プーリーを切断対象物の押し切り方向に前進させることにより、反力受け装置で保持しつつコンクリート部材を切断することができる。これにより、狭い場所で火気を用いることなく、また、騒音や振動、粉じんの発生を大幅に抑えてコンクリート部材を解体することが可能になる。  When cutting the concrete member with this cutting device, the drive pulley is driven to rotate at the stage where a part of the wire saw and the reaction force receiving device are brought into contact with the concrete member to be cut by the arm operation of the construction machine. Rotate the wire saw while supporting it with each pulley. And a concrete member can be cut | disconnected, hold | maintaining with a reaction force receiving apparatus by advancing a propulsion pulley to the pushing-off direction of a cutting target object by a propulsion pulley drive means. As a result, it is possible to dismantle the concrete member without using fire in a narrow place and greatly suppressing the generation of noise, vibration, and dust.

特許第５７２５３４６号公報Japanese Patent No. 5725346 特開２０１４−６９５２９号公報JP 2014-69529 A

しかしながら、上記の押し切り方式のワイヤーソー切断装置を用いる場合には、手前側からコンクリート部材を切断するため、必然的に手前側の一部の鉄筋や鉄骨のフランジ部を残すことができない。これにより、構造物内側の一部の鉄筋や鉄骨のフランジ部を残すように切断を行ってコンクリート部材を自立可能な状態にしておき、コンクリート部材の上端部側を重機で構造物内側に把持して引き倒すことが必要な場合に採用することができない。   However, in the case of using the above-described push-saw type wire saw cutting device, since the concrete member is cut from the front side, it is inevitably left as a part of the reinforcing bars and the steel flange portion on the front side. As a result, the concrete member is cut so as to leave a part of the reinforcing bars inside the structure and the flange of the steel frame so that the concrete member can stand on its own, and the upper end side of the concrete member is held inside the structure by a heavy machine. Can not be adopted when it is necessary to pull down.

さらに、押し切り方式のワイヤーソー切断装置を用いる場合には、切断装置の先端部が切断対象物のコンクリート部材の背面よりも外側（奥側）に突出するため、コンクリート部材の背面から外側に１５０ｍｍ程度以上の空間が必要になる。これにより、例えば切断対象部物のコンクリート部材の柱の外側に近接して壁がある場合などでは、切断装置の先端部が壁などに干渉し、押し切り方式のワイヤーソー切断装置でこの柱を切断できない。   Furthermore, when using a push-cut type wire saw cutting device, the tip of the cutting device protrudes outward (back side) from the back surface of the concrete member of the object to be cut, so about 150 mm outward from the back surface of the concrete member. More space is required. As a result, for example, when there is a wall close to the outside of the pillar of the concrete member of the part to be cut, the tip of the cutting device interferes with the wall and the like, and this pillar is cut with a push-saw type wire saw cutting device. Can not.

また、押し切り方式のワイヤーソー切断装置を用いて柱などのコンクリート部材を切断する際には、基本的に完全にコンクリート部材を切断することになるため、コンクリート部材のずれ止め、切断後の転倒防止用のブラケットなどを予め取り付けておくことが必要になる。   Also, when concrete members such as pillars are cut using a push-saw type wire saw cutting device, the concrete members are basically completely cut. It is necessary to attach a bracket for the use in advance.

さらに、押し切り方式のワイヤーソー切断装置においては、押し切り方向に沿って進退する一対の推進プーリー間の間隔を超える幅が広いコンクリート部材や奥行きのあるコンクリート部材の切断に対応できない。   Furthermore, the press-cut type wire saw cutting device cannot cope with the cutting of a concrete member having a wide width or a concrete member having a depth exceeding a distance between a pair of propulsion pulleys moving forward and backward along the push-cut direction.

本発明は、上記事情に鑑み、ＲＣ造及び／又はＳＲＣ造のコンクリート部材を好適に切断／解体することを可能にするコンクリート部材の切断装置及びコンクリート部材の解体方法を提供することを目的とする。   In view of the circumstances described above, an object of the present invention is to provide a concrete member cutting apparatus and a concrete member disassembly method that can suitably cut / disassemble a RC and / or SRC concrete member. .

上記の目的を達するために、この発明は以下の手段を提供している。   In order to achieve the above object, the present invention provides the following means.

本発明のコンクリート部材の切断装置は、コンクリート部材を切断／解体するための切断装置であって、ベースマシンに取り付けて切断装置を支持させるためのアダプターと、前記アダプターに一体に取り付けられる前記ガイドフレームと、前記ガイドフレームに支持されるワイヤーソー機構とを備えており、前記ワイヤーソー機構が、複数のプーリーと、前記複数のプーリーに無端ループ状に巻き掛けられ、前記駆動プーリーの回転駆動とともに循環回動するワイヤーソーとを備え、前記複数のプーリーとして、回転駆動する駆動プーリーと、前記ワイヤーソーを回動自在に支持するためのガイドプーリーと、前後方向に進退自在に設けられ、前記ワイヤーソーの張力を調整するためのテンションプーリーと、前後方向に進退自在に設けられた左右一対の推進プーリーと、前記一対の推進プーリーと連結して前後方向に進退自在に設けられ、且つ互いの間の前記ワイヤーソーを前記コンクリート部材に切り込ませるとともに反力を受けるように設けられた左右一対の引き切り用推進支持プーリーとを備えていることを特徴とする。   The concrete member cutting device according to the present invention is a cutting device for cutting / disassembling a concrete member, the adapter being attached to a base machine to support the cutting device, and the guide frame integrally attached to the adapter. And a wire saw mechanism supported by the guide frame. The wire saw mechanism is wound around the plurality of pulleys and the plurality of pulleys in an endless loop, and circulates together with the rotational drive of the drive pulley. A wire pulley that rotates; a drive pulley that rotates and drives as the plurality of pulleys; a guide pulley that rotatably supports the wire saw; A tension pulley for adjusting the tension of the belt A pair of left and right propulsion pulleys, connected to the pair of propulsion pulleys so as to be able to advance and retreat in the front-rear direction, and to cut the wire saw between them into the concrete member and to receive a reaction force And a pair of left and right pulling propulsion support pulleys.

本発明のコンクリート部材の解体方法は、上下方向に立設されたＲＣ造又はＳＲＣ造のコンクリート部材を解体する方法であって、ワイヤーソー切断装置を用い、ワイヤーソーを循環回動させるとともに引き切り方式で切り込ませて前記コンクリート部材を切削し、前記コンクリート部材の手前側の鉄筋又は鉄骨のフランジ部を残し、前記コンクリート部材が自立可能な状態で前記ワイヤーソー切断装置による切削作業を完了し、前記コンクリート部材を把持して手前側に引き倒して解体することを特徴とする。   The method for dismantling a concrete member according to the present invention is a method for dismantling an RC or SRC concrete member standing up and down in a vertical direction, using a wire saw cutting device, circulating and rotating the wire saw. Cutting the concrete member by cutting in a manner, leaving the reinforcing bar or steel flange on the near side of the concrete member, and completing the cutting work by the wire saw cutting device in a state where the concrete member can stand alone, The concrete member is grasped and pulled down toward the front side to be disassembled.

また、本発明のコンクリート部材の解体方法においては、前記ワイヤーソー切断装置として、上記のコンクリート部材の切断装置を用いることが望ましい。   In the concrete member disassembling method of the present invention, it is desirable to use the concrete member cutting device described above as the wire saw cutting device.

本発明のコンクリート部材の切断装置及びコンクリート部材の解体方法によれば、火気を使わず、また、完全な破砕工法と比較し、騒音や振動、粉じんの発生を抑えて、ＲＣ造及び／又はＳＲＣ造のコンクリート部材を好適に柱などのコンクリート部材を切断／解体することができる。   According to the concrete member cutting apparatus and the concrete member disassembling method of the present invention, no fire is used, and compared with a complete crushing method, generation of noise, vibration, and dust is suppressed, and RC construction and / or SRC are performed. A concrete member such as a pillar can be cut / disassembled suitably.

本発明の一実施形態に係るコンクリート部材の切断装置及びコンクリート部材の解体方法を示す図である。It is a figure which shows the cutting device of the concrete member which concerns on one Embodiment of this invention, and the demolition method of a concrete member. 従来のコンクリート部材の解体方法（引き倒し工法）を示す図である。It is a figure which shows the dismantling method (pulling method) of the conventional concrete member.

以下、図１（及び図２）を参照し、本発明の一実施形態に係るコンクリート部材の切断装置及びコンクリート部材の解体方法について説明する。   Hereinafter, with reference to FIG. 1 (and FIG. 2), the concrete member cutting device and the concrete member disassembling method according to an embodiment of the present invention will be described.

ここで、本実施形態は、図２に示すようなＲＣ造やＳＲＣ造で上下方向に立設された柱などのコンクリート部材１を切断／解体する際に用いて好適なコンクリート部材の切断装置及び解体方法に関するものである。   Here, the present embodiment is a concrete member cutting apparatus suitable for use in cutting / disassembling a concrete member 1 such as a pillar standing up and down in RC or SRC as shown in FIG. It relates to the dismantling method.

はじめに、本実施形態のコンクリート部材の切断装置Ａは、図１に示すように、ワイヤーソーを備えた切断装置（ワイヤーソー切断装置）であり、コンクリート部材１を引き切り方式で切断するように構成したものである。   First, as shown in FIG. 1, the concrete member cutting apparatus A of the present embodiment is a cutting apparatus (wire saw cutting apparatus) provided with a wire saw, and is configured to cut the concrete member 1 by a drawing method. It is a thing.

具体的に、本実施形態のコンクリート部材の切断装置Ａは、油圧ショベルなどのベースマシンに取り付けて切断装置Ａを支持させるためのチルト機構付アダプター３と、アダプター３に一体に取り付けられるガイドフレーム４と、ガイドフレーム４に支持されるワイヤーソー機構５と、反力受け装置１３とを備えて構成されている。   Specifically, the concrete member cutting apparatus A according to the present embodiment includes an adapter 3 with a tilt mechanism that is attached to a base machine such as a hydraulic excavator to support the cutting apparatus A, and a guide frame 4 that is integrally attached to the adapter 3. And a wire saw mechanism 5 supported by the guide frame 4 and a reaction force receiving device 13.

ガイドフレーム４は、左右方向Ｔ１の幅方向に延設されるとともに幅方向略中央をアダプター３に接続して配設されるベース部４ａと、ベース部４ａの両側部から前方に直線状に延びる左右一対のガイド部４ｂを備えて略コ字状に形成されている。   The guide frame 4 extends in the width direction of the left-right direction T1 and extends linearly forward from both side portions of the base portion 4a and a base portion 4a that is disposed by connecting the approximate center in the width direction to the adapter 3. A pair of left and right guide portions 4b is provided and is formed in a substantially U shape.

ワイヤーソー機構５は、複数のプーリー（シーブ）６〜１０と、これら複数のプーリー６〜１０に無端ループ状に巻き掛けられて循環回動するワイヤーソー１１とを備えて構成されている。   The wire saw mechanism 5 includes a plurality of pulleys (sieves) 6 to 10 and a wire saw 11 that is wound around the plurality of pulleys 6 to 10 in an endless loop shape and circulates and rotates.

また、複数のプーリー６〜１０として、ガイドフレーム４のベース部４ａ側に配設されて支持された駆動プーリー６と、複数のガイドプーリー７と、ガイドフレーム４の一対のガイド部４ｂにそれぞれ前後方向Ｔ２に進退自在に支持された一対の推進プーリー８と、各推進プーリー８に従動し、各推進プーリー８とともにそれぞれ前後方向に進退する一対の引き切り用推進支持プーリー９と、ガイドフレーム４に前後方向Ｔ２に進退自在に支持されたテンションプーリー１０とが設けられている。   Further, as the plurality of pulleys 6 to 10, the drive pulley 6 disposed and supported on the base portion 4 a side of the guide frame 4, the plurality of guide pulleys 7, and the pair of guide portions 4 b of the guide frame 4 are respectively front and rear. A pair of propulsion pulleys 8 supported so as to be able to advance and retreat in the direction T2; A tension pulley 10 is provided that is supported so as to be movable back and forth in the front-rear direction T2.

本実施形態では、左右の一対の推進プーリー８と引き切り用推進支持プーリー９の互いの軸部（軸支部）を連結するなどし、これら左右の一対の推進プーリー８と引き切り用推進支持プーリー９が回転自在に連結されている。   In the present embodiment, the pair of right and left propulsion pulleys 8 and the pulling propulsion support pulley 9 are connected to each other (shaft support portions), and the left and right propulsion pulleys 8 and the pulling propulsion support pulley are connected. 9 is rotatably connected.

一対の引き切り用推進支持プーリー９はそれぞれ、左右方向Ｔ１の内側端部９ａが、連結する推進プーリー８の左右方向Ｔ１の内側端部８ａよりも内側に配設され、且つ前後方向Ｔ２の後端部９ｂが、連結する推進プーリー８の前端部８ｂよりも後方に配設されている。  Each of the pair of propulsion support pulleys 9 for pulling is provided such that the inner end portion 9a in the left-right direction T1 is disposed inside the inner end portion 8a in the left-right direction T1 of the propulsion pulley 8 to be coupled, and the rear end in the front-rear direction T2 The end 9b is disposed behind the front end 8b of the propulsion pulley 8 to be connected.

また、ワイヤーソー機構５は、駆動プーリー６を回転軸周りに回転駆動させるための駆動プーリー回転駆動手段（不図示）と、無端ループ状のワイヤーソー１１の張力が所定の状態で保持されるようにテンションプーリー１０を例えば前後方向Ｔ２に進退させるためのテンションプーリー進退駆動手段（不図示）と、各推進プーリー８及び引き切り用推進支持プーリー９を前後方向Ｔ２に進退させるための推進プーリー進退駆動手段（不図示）とを備えている。   The wire saw mechanism 5 is configured so that the tension of the drive pulley rotation driving means (not shown) for rotating the drive pulley 6 around the rotation axis and the endless loop-shaped wire saw 11 is held in a predetermined state. For example, a tension pulley advancing / retreating drive means (not shown) for advancing and retracting the tension pulley 10 in the front-rear direction T2, and a propulsion pulley advancing / retreating drive for advancing and retracting each propulsion pulley 8 and the pulling propulsion support pulley 9 in the front-rear direction T2. Means (not shown).

そして、本実施形態のコンクリート部材の切断装置Ａでは、駆動プーリー回転駆動手段によって駆動プーリー６がガイド部４ｂの延設方向に直交する上下方向に延びる回転軸周りに回転駆動するとともに、複数のプーリー６〜１０に巻き掛けられて上下方向に直交する水平面内に配設された無端ループ状のワイヤーソー１１が循環して回動するように構成されている。   In the concrete member cutting apparatus A of the present embodiment, the drive pulley 6 is driven to rotate around the rotation axis extending in the vertical direction perpendicular to the extending direction of the guide portion 4b by the drive pulley rotation driving means, and the plurality of pulleys An endless loop wire saw 11 wound around 6 to 10 and disposed in a horizontal plane perpendicular to the vertical direction is configured to circulate and rotate.

また、本実施形態のコンクリート部材の切断装置Ａにおいては、引き切り方式で使用する際に、左右の一対の推進プーリー８の前端部８ｂ側から引き切り用推進支持プーリー９の後端部９ｂ側に巻き掛けるように、且つワイヤーソー１１の内部にコンクリート部材１が配されるように（ワイヤーソー１１でコンクリート部材１を囲繞するように）ワイヤーソー１１を取り付ける。これにより、引き切り方式で使用する際には、ワイヤーソー１１の左右一対の引き切り用推進支持プーリー９の間に架け渡された部分がコンクリート部材１を切削する切削部１１ａとなる。   In the concrete member cutting apparatus A of the present embodiment, when used in the pulling method, the rear end portion 9b side of the pulling propulsion support pulley 9 from the front end portion 8b side of the pair of left and right propulsion pulleys 8 is used. The wire saw 11 is attached so that the concrete member 1 is arranged inside the wire saw 11 (so that the concrete member 1 is surrounded by the wire saw 11). Thereby, when using it by a drawing system, the part spanned between the pair of right and left pulling propulsion support pulleys 9 of the wire saw 11 becomes a cutting part 11 a for cutting the concrete member 1.

次に、図１（及び図２）を参照し、本実施形態のコンクリート部材の切断装置Ａを用い、引き切り方式でＲＣ造やＳＲＣ造の柱などのコンクリート部材１を解体する方法について説明する。   Next, with reference to FIG. 1 (and FIG. 2), a method of dismantling the concrete member 1 such as an RC or SRC column by a drawing method using the concrete member cutting apparatus A of the present embodiment will be described. .

はじめに、本実施形態のコンクリート部材の解体方法では、建設作業機などのベースマシンを操作して切断装置Ａのガイドフレーム４を所定位置に配置する。このとき、本実施形態では、ガイドフレーム４を水平状態にするとともにコンクリート部材１の中心とガイドフレーム４の中心を概略合わせ、一対のガイド部４ｂがコンクリート部材１の左右それぞれの側に均等に配されるようにする。   First, in the method for dismantling a concrete member according to the present embodiment, a base machine such as a construction machine is operated to place the guide frame 4 of the cutting device A at a predetermined position. At this time, in this embodiment, the guide frame 4 is placed in a horizontal state, the center of the concrete member 1 and the center of the guide frame 4 are roughly aligned, and the pair of guide portions 4b are evenly arranged on the left and right sides of the concrete member 1. To be.

この状態で、左右一対の推進プーリー８及び引き切り用推進支持プーリー９をガイド部４ｂの前端側に配置し、これら推進プーリー８及び引き切り用推進支持プーリー９に巻き掛けつつコンクリート部材１を囲繞するようにワイヤーソー１１を無端ループ状にしてセットする。また、反力受け装置１３をコンクリート部材１の前面（手前側の側面）に当接させる。   In this state, a pair of left and right propulsion pulleys 8 and a pulling propulsion support pulley 9 are arranged on the front end side of the guide portion 4b, and the concrete member 1 is surrounded while being wound around the propulsion pulley 8 and the pulling propulsion support pulley 9. As shown, the wire saw 11 is set in an endless loop. Further, the reaction force receiving device 13 is brought into contact with the front surface (front side surface) of the concrete member 1.

ワイヤーソー１１をセットした段階で、駆動プーリー６を回転駆動させてワイヤーソー１１を循環回動させるとともに、ガイド部４ｂに沿って推進プーリー８及び引き切り用推進支持プーリー９を後退させ、一対の引き切り用推進支持プーリー９の間のワイヤーソー１１の切削部１１ａをコンクリート部材１の背面側に切り込ませる。   At the stage where the wire saw 11 is set, the drive pulley 6 is rotationally driven to circulate and rotate the wire saw 11, and the propulsion pulley 8 and the pulling propulsion support pulley 9 are moved backward along the guide portion 4b. The cutting part 11 a of the wire saw 11 between the pulling propulsion support pulley 9 is cut into the back side of the concrete member 1.

順次ガイド部４ｂに沿って推進プーリー８及び引き切り用推進支持プーリー９を後退させ、また、必要に応じてベースマシンを操作して切断装置Ａを後方に移動させながらワイヤーソー１１でコンクリート部材１を切削する。   Sequentially retract the propulsion pulley 8 and the pulling propulsion support pulley 9 along the guide portion 4b, and operate the base machine as necessary to move the cutting device A backward while moving the concrete member 1 with the wire saw 11. To cut.

本実施形態では、コンクリート部材１の手前側（構造物内側）の一部の鉄筋や鉄骨１２のフランジ部１２ａを残した状態でワイヤーソー切断装置Ａによる引き切り切削作業を完了する。   In the present embodiment, the cutting operation by the wire saw cutting device A is completed in a state where a part of the reinforcing bars on the near side (inside the structure) of the concrete member 1 and the flange portion 12a of the steel frame 12 are left.

そして、重機でコンクリート部材１の上端部側を構造物内側に押圧（把持）し、構造物内側にコンクリート部材１を引き倒す。コンクリート部材１を引き倒した段階で、残した一部の鉄筋や鉄骨１２のフランジ部１２ａを切断し、完全に分離させる。   And the upper end part side of the concrete member 1 is pressed (gripped) inside the structure with a heavy machine, and the concrete member 1 is pulled down inside the structure. When the concrete member 1 is pulled down, the remaining part of the reinforcing bars and the flange 12a of the steel frame 12 are cut and completely separated.

したがって、本実施形態のコンクリート部材の切断装置Ａ及びコンクリート部材の解体方法においては、火気を使わず、また、完全な破砕工法と比較し、騒音や振動、粉じんの発生を抑えて柱などのコンクリート部材１を解体することができる。   Therefore, in the concrete member cutting apparatus A and the concrete member disassembling method of this embodiment, no fire is used, and compared to a complete crushing method, the generation of noise, vibration, and dust is suppressed and concrete such as a pillar is used. The member 1 can be disassembled.

また、引き切り方式のワイヤーソー切断装置Ａでコンクリート部材１を切断／切削するため、構造物内側の一部の鉄筋や鉄骨１２のフランジ部１２ａを残してコンクリート部材１を自立可能な状態にしておき、コンクリート部材１の上端部側を重機で構造物内側に押圧（把持）して引き倒すことができる。これにより、ワイヤーソー切断装置Ａを引き倒し工法に適用することが可能になる。   Moreover, in order to cut / cut the concrete member 1 with the wire saw cutting apparatus A of the draw system, the concrete member 1 is made in a state where it can stand on its own, leaving a part of the reinforcing bars inside the structure and the flange portion 12a of the steel frame 12. The upper end side of the concrete member 1 can be pushed (gripped) to the inside of the structure with a heavy machine and pulled down. Thereby, it becomes possible to pull down the wire saw cutting device A and apply it to the construction method.

さらに、引き切り方式のワイヤーソー切断装置Ａでコンクリート部材１を切断／切削することにより、一対の推進プーリー８間の間隔を超える幅が広いコンクリート部材１や奥行きのあるコンクリート部材１の切断にも対応することができる。   Further, by cutting / cutting the concrete member 1 with the wire saw cutting device A of the pulling method, the concrete member 1 having a wide width exceeding the distance between the pair of propulsion pulleys 8 or the concrete member 1 having a depth can be cut. Can respond.

また、引き切り方式のワイヤーソー切断装置Ａでコンクリート部材１を切断／切削することにより、押し切り方式のワイヤーソー切断装置Ａを用いる場合のように切断装置Ａの先端部が切断対象物のコンクリート部材１の背面よりも外側に突出することがない。これにより、例えば切断対象物の柱の外側に近接して壁がある場合でも、切断装置Ａの先端部が壁などに干渉することがない。よって、ワイヤーソー切断装置Ａの適用範囲を大幅に拡大することが可能になる。   Further, by cutting / cutting the concrete member 1 with the wire saw cutting device A of the pulling type, the tip of the cutting device A is a concrete member whose cutting object is the same as when using the wire saw cutting device A of the push cutting method. It does not protrude outward from the back surface of 1. Thereby, for example, even when there is a wall close to the outside of the pillar of the cutting object, the tip of the cutting apparatus A does not interfere with the wall or the like. Therefore, the applicable range of the wire saw cutting apparatus A can be greatly expanded.

また、押し切り方式のワイヤーソー切断装置を用いて柱などのコンクリート部材１を切断する場合のように完全にコンクリート部材１を切断する必要がなく、構造物内側の一部の鉄筋や鉄骨１２のフランジ部１２ａを残すように切断を行うことができる。このため、コンクリート部材１のずれ止め、切断後の転倒防止用のブラケットなどを予め取り付けることを不要にできる。これにより、ブラケットなどの取り付け手間、これに要するコストを削減することができる。   Further, there is no need to completely cut the concrete member 1 as in the case of cutting the concrete member 1 such as a pillar using a push-cut type wire saw cutting device, and some reinforcing bars inside the structure and the flange of the steel frame 12 Cutting can be performed to leave the portion 12a. For this reason, it is possible to eliminate the need to attach a bracket for preventing the concrete member 1 from slipping and preventing the concrete member 1 from falling after being cut. As a result, it is possible to reduce the time and effort required for mounting the bracket and the like.

以上、本発明に係るコンクリート部材の切断装置及びコンクリート部材の解体方法の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。   As mentioned above, although one embodiment of the concrete member cutting device and the concrete member disassembling method according to the present invention has been described, the present invention is not limited to the above-described embodiment, and may be appropriately selected within the scope of the present invention. It can be changed.

１ コンクリート部材（柱）
２ 外壁
３ アダプター
４ ガイドフレーム
４ａ ベース部
４ｂ ガイド部
５ ワイヤーソー機構（ワイヤーソーユニット）
６ 駆動プーリー
７ ガイドプーリー
８ 推進プーリー
８ａ 内側端部
８ｂ 前端部
９ 引き切り用推進支持プーリー
９ａ 内側端部
９ｂ 後端部
１０ テンションプーリー
１１ ワイヤーソー
１１ａ 切削部
１２ 鉄骨
１２ａ 構造物内側のフランジ部
１３ 反力受け装置
Ａ コンクリート部材の切断装置（ワイヤーソー切断装置）
Ｔ１ 左右方向（幅方向）
Ｔ２ 前後方向 1 Concrete member (pillar)
2 Outer wall 3 Adapter 4 Guide frame 4a Base part 4b Guide part 5 Wire saw mechanism (wire saw unit)
6 Driving pulley 7 Guide pulley 8 Propulsion pulley 8a Inner end 8b Front end 9 Pulling propulsion support pulley 9a Inner end 9b Rear end 10 Tension pulley 11 Wire saw 11a Cutting part 12 Steel 12a Flange 13 inside the structure Reaction force receiving device A Concrete material cutting device (wire saw cutting device)
T1 Left and right direction (width direction)
T2 longitudinal direction

Claims (3)

コンクリート部材を切断／解体するための切断装置であって、
ベースマシンに取り付けて切断装置を支持させるためのアダプターと、前記アダプターに一体に取り付けられる前記ガイドフレームと、前記ガイドフレームに支持されるワイヤーソー機構とを備えており、
前記ワイヤーソー機構が、複数のプーリーと、前記複数のプーリーに無端ループ状に巻き掛けられ、前記駆動プーリーの回転駆動とともに循環回動するワイヤーソーとを備え、
前記複数のプーリーとして、回転駆動する駆動プーリーと、前記ワイヤーソーを回動自在に支持するためのガイドプーリーと、前後方向に進退自在に設けられ、前記ワイヤーソーの張力を調整するためのテンションプーリーと、前後方向に進退自在に設けられた左右一対の推進プーリーと、前記一対の推進プーリーと連結して前後方向に進退自在に設けられ、且つ互いの間の前記ワイヤーソーを前記コンクリート部材に切り込ませるとともに反力を受けるように設けられた左右一対の引き切り用推進支持プーリーとを備えていることを特徴とするコンクリート部材の切断装置。 A cutting device for cutting / disassembling a concrete member,
An adapter for attaching to a base machine to support a cutting device, the guide frame attached integrally to the adapter, and a wire saw mechanism supported by the guide frame,
The wire saw mechanism includes a plurality of pulleys, and a wire saw that is wound around the plurality of pulleys in an endless loop shape and circulates and rotates together with a rotational drive of the drive pulley,
As the plurality of pulleys, a drive pulley that is rotationally driven, a guide pulley that rotatably supports the wire saw, and a tension pulley that is provided so as to be able to advance and retract in the front-rear direction and adjust the tension of the wire saw. A pair of left and right propulsion pulleys provided to be movable forward and backward in the front-rear direction, and connected to the pair of propulsion pulleys to be movable in the front-rear direction, and the wire saw between them is cut into the concrete member. A concrete member cutting device comprising: a pair of left and right pulling propulsion support pulleys which are provided so as to be inserted and receive a reaction force. 上下方向に立設されたＲＣ造又はＳＲＣ造のコンクリート部材を解体する方法であって、
ワイヤーソー切断装置を用い、ワイヤーソーを循環回動させるとともに引き切り方式で切り込ませて前記コンクリート部材を切削し、
前記コンクリート部材の手前側の鉄筋又は鉄骨のフランジ部を残し、前記コンクリート部材が自立可能な状態で前記ワイヤーソー切断装置による切削作業を完了し、
前記コンクリート部材を把持して手前側に引き倒して解体することを特徴とするコンクリート部材の解体方法。 A method of dismantling RC or SRC concrete members standing up and down,
Using a wire saw cutting device, the wire saw is circulated and rotated, and the concrete member is cut by a cutting method,
Leaving the reinforcing bar or the steel flange on the near side of the concrete member, the cutting work by the wire saw cutting device is completed in a state where the concrete member can stand by itself,
A method for dismantling a concrete member, wherein the concrete member is grasped and pulled down toward the near side to dismantle. 請求項２記載のコンクリート部材の解体方法において、
前記ワイヤーソー切断装置として、請求項１記載のコンクリート部材の切断装置を用いることを特徴とするコンクリート部材の解体方法。 In the dismantling method of the concrete member according to claim 2,
A concrete member disassembling method using the concrete member cutting device according to claim 1 as the wire saw cutting device.
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JP2000141355A (en) * 1998-11-13 2000-05-23 Venture:Kk Adapter for wire type cutter, cutting method using the same, and wire type cutter
JP2009101542A (en) * 2007-10-22 2009-05-14 Daiichi Cutter Kogyo Kk Cutting method and cutting device
JP2011058295A (en) * 2009-09-11 2011-03-24 Kajima Corp Method of over-turning and demolishing
JP2013023922A (en) * 2011-07-21 2013-02-04 Ohbayashi Corp Cutting apparatus, cutting method, and demolition method for structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29821386U1 (en) * 1998-12-01 2000-03-30 Steiner Andreas Rope saw machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000141355A (en) * 1998-11-13 2000-05-23 Venture:Kk Adapter for wire type cutter, cutting method using the same, and wire type cutter
JP2009101542A (en) * 2007-10-22 2009-05-14 Daiichi Cutter Kogyo Kk Cutting method and cutting device
JP2011058295A (en) * 2009-09-11 2011-03-24 Kajima Corp Method of over-turning and demolishing
JP2013023922A (en) * 2011-07-21 2013-02-04 Ohbayashi Corp Cutting apparatus, cutting method, and demolition method for structure

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