JP6950041B1 - Structure dismantling system and structure dismantling method - Google Patents

Structure dismantling system and structure dismantling method Download PDF

Info

Publication number
JP6950041B1
JP6950041B1 JP2020090979A JP2020090979A JP6950041B1 JP 6950041 B1 JP6950041 B1 JP 6950041B1 JP 2020090979 A JP2020090979 A JP 2020090979A JP 2020090979 A JP2020090979 A JP 2020090979A JP 6950041 B1 JP6950041 B1 JP 6950041B1
Authority
JP
Japan
Prior art keywords
reaction force
support column
support
jack
force member
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.)
Active
Application number
JP2020090979A
Other languages
Japanese (ja)
Other versions
JP2021188263A (en
Inventor
達也 本藏
達也 本藏
英樹 市原
英樹 市原
清志 矢島
清志 矢島
栄一 久松
栄一 久松
誠 萱嶋
誠 萱嶋
裕介 野口
裕介 野口
陸朗 齋藤
陸朗 齋藤
上田 大輔
大輔 上田
慶 藤岡
慶 藤岡
治 長谷川
治 長谷川
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.)
Taisei Corp
Original Assignee
Taisei Corp
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 Taisei Corp filed Critical Taisei Corp
Priority to JP2020090979A priority Critical patent/JP6950041B1/en
Application granted granted Critical
Publication of JP6950041B1 publication Critical patent/JP6950041B1/en
Publication of JP2021188263A publication Critical patent/JP2021188263A/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Working Measures On Existing Buildindgs (AREA)

Abstract

【課題】ジャッキダウン作業を円滑にできる構造物解体システムを提供すること。【解決手段】構造物解体システム2は、クレーン設置床20、支持柱11A、および昇降装置22を備える。昇降装置22は、支持柱11Aの上端に取り付けられた反力部材50と、反力部材50の滑車612に巻かれて一端側がクレーン設置床20に連結された吊り材51と、クレーン設置床20に設けられて吊り材51の他端側を引っ張るストランドジャッキ52と、を備える。反力部材50は、支持柱11Aの上端に被せられたボックス部材60と、ボックス部材60の上に設けられて略水平に延びる反力梁61と、ボックス部材60の内壁面に設けられて支持柱11Aの側面に当接可能な仮固定用のエアジャッキ62と、ボックス部材60の側面に設けられてエアジャッキ62のエアホース63が巻き取られた巻き取りドラム64と、を備える。【選択図】図2PROBLEM TO BE SOLVED: To provide a structure dismantling system capable of smooth jacking down work. A structure dismantling system 2 includes a crane installation floor 20, support columns 11A, and an elevating device 22. The lifting device 22 includes a reaction force member 50 attached to the upper end of the support column 11A, a suspension member 51 wound around a pulley 612 of the reaction force member 50 and one end connected to the crane installation floor 20, and a crane installation floor 20. The strand jack 52 is provided in the above and pulls the other end side of the hanging member 51. The reaction force member 50 is provided on the upper end of the support column 11A, the box member 60, the reaction force beam 61 provided on the box member 60 and extending substantially horizontally, and the inner wall surface of the box member 60 to support the reaction member 50. It includes an air jack 62 for temporary fixing that can come into contact with the side surface of the pillar 11A, and a take-up drum 64 that is provided on the side surface of the box member 60 and on which the air hose 63 of the air jack 62 is wound. [Selection diagram] Fig. 2

Description

本発明は、構造物を解体するための構造物解体システム、および、この構造物解体システムを用いた構造物解体方法に関する。 The present invention relates to a structure dismantling system for dismantling a structure, and a structure dismantling method using this structure dismantling system.

従来より、既存構造物を解体する方法としては、以下のような方法がある(特許文献1参照)。
特許文献1には、既存構造物の所定の既存柱を支持柱とし、この支持柱に仮支持させてクレーンが設置されたクレーン設置床を構築しておき、このクレーンで各フロアを解体しながら、クレーン設置床を支持柱に沿って下降させることで、既存構造物を上層から下層に向かって解体する方法が示されている。
この解体方法では、クレーン設置床を下降させる(ジャッキダウン)際には、支持柱の上端に反力部材を固定して、この反力部材を利用して昇降ジャッキによりクレーン設置床を下降させる。一方、支持柱の上端部を切断して撤去する際には、この反力部材を一端取り外す必要がある。
そこで、反力部材の内壁面に仮固定ジャッキを設け、この仮固定ジャッキで支持柱の側面を押圧することで、反力部材を支持柱の上端に仮固定している。この仮固定ジャッキは、ねじを回転させることで厚さを変更可能であり、ねじの先端には、チェーンが巻き回されている。よって、このチェーンを引っ張ることで、ねじを回転させて、仮固定ジャッキで支持柱の側面を押圧する。
Conventionally, there are the following methods as a method of disassembling an existing structure (see Patent Document 1).
In Patent Document 1, a predetermined existing pillar of an existing structure is used as a support pillar, and a crane installation floor on which a crane is installed is constructed by temporarily supporting the support pillar, and each floor is dismantled by this crane. , A method of dismantling an existing structure from the upper layer to the lower layer by lowering the crane installation floor along the support column is shown.
In this dismantling method, when the crane installation floor is lowered (jack down), a reaction force member is fixed to the upper end of the support column, and the reaction force member is used to lower the crane installation floor by an elevating jack. On the other hand, when the upper end of the support column is cut and removed, it is necessary to remove the reaction force member once.
Therefore, a temporary fixing jack is provided on the inner wall surface of the reaction force member, and the reaction force member is temporarily fixed to the upper end of the support column by pressing the side surface of the support column with the temporary fixing jack. The thickness of this temporary fixing jack can be changed by rotating the screw, and a chain is wound around the tip of the screw. Therefore, by pulling this chain, the screw is rotated and the side surface of the support column is pressed by the temporary fixing jack.

上述の解体方法では、ジャッキダウンの際、仮固定ジャッキの長いチェーンが邪魔になり、ジャッキダウン作業を円滑に行うことができなかった。 In the above-mentioned dismantling method, the long chain of the temporarily fixed jack became an obstacle during jacking down, and the jacking down work could not be performed smoothly.

特開2019−15151号公報Japanese Unexamined Patent Publication No. 2019-15151

本発明は、解体対象階を覆うクレーン設置床をジャッキダウンさせながら、構造物を上階から下層階に向かって解体する場合に、クレーン設置床のジャッキダウン作業を円滑に行うことができる、構造物解体システムおよび構造物解体方法を提供することを課題とする。 The present invention has a structure capable of smoothly jacking down the crane installation floor when the structure is dismantled from the upper floor to the lower floor while jacking down the crane installation floor covering the floor to be demolished. An object of the present invention is to provide a material dismantling system and a structure dismantling method.

第1の発明の構造物解体システム(例えば、後述の構造物解体システム2)は、構造物(例えば、後述の既存建物1)を解体する解体システムであって、構造物の所定階の上に構築された仮設屋根(例えば、後述のクレーン設置床20)と、当該仮設屋根を支持する既存柱である支持柱(例えば、後述の支持柱11A)と、前記仮設屋根を前記支持柱に沿って下降させる昇降装置(例えば、後述の昇降装置22)と、を備え、当該昇降装置は、前記支持柱の上端に取り付けられて略水平に延びてかつ両端側に回転自在に設けられた一対の滑車(例えば、後述の滑車612)を有する反力部材(例えば、後述の反力部材50)と、当該反力部材の滑車に巻かれて一端側が前記仮設屋根に連結された吊り材(例えば、後述の吊り材51)と、前記仮設屋根に設けられて前記吊り材の他端側に設けられた昇降ジャッキ(例えば、後述のストランドジャッキ52)と、を備え、前記反力部材は、前記支持柱の上端に被せられて上端が塞がれた矩形筒状のボックス部材(例えば、後述のボックス部材60)と、当該ボックス部材の上に設けられて略水平に延びる反力梁(例えば、後述の反力梁61)と、前記ボックス部材の内壁面に設けられて前記支持柱の側面に当接可能な仮固定用のエアジャッキ(例えば、後述のエアジャッキ62)と、前記ボックス部材の側面に設けられた巻き取りドラム(例えば、後述の巻き取りドラム64)と、を備えることを特徴とする。 The structure dismantling system of the first invention (for example, the structure dismantling system 2 described later) is a dismantling system for dismantling a structure (for example, an existing building 1 described later) on a predetermined floor of the structure. A constructed temporary roof (for example, a crane installation floor 20 described later), a support pillar (for example, a support pillar 11A described later) which is an existing pillar supporting the temporary roof, and the temporary roof along the support pillar. A pair of cranes provided with an elevating device (for example, an elevating device 22 described later) for lowering the elevating device, which is attached to the upper end of the support column, extends substantially horizontally, and is rotatably provided on both end sides. A reaction force member (for example, a reaction force member 50 described later) having (for example, a crane 612 described later) and a hanging member wound around the pulley of the reaction force member and one end connected to the temporary roof (for example, described later). 51) and an elevating jack (for example, a strand jack 52 described later) provided on the temporary roof and provided on the other end side of the suspension member, and the reaction force member is the support pillar. A rectangular tubular box member (for example, a box member 60 described later) which is covered on the upper end of the box member and whose upper end is closed, and a reaction beam (for example, a reaction force beam described later) provided on the box member and extending substantially horizontally. The reaction beam 61), an air jack for temporary fixing (for example, an air jack 62 described later) provided on the inner wall surface of the box member and capable of contacting the side surface of the support column, and the side surface of the box member. It is characterized by including a provided take-up drum (for example, a take-up drum 64 described later).

この発明によれば、以下の手順で反力部材を支持柱に仮固定する。すなわち、反力部材のボックス部材を支持柱の上端に被せて、この状態で、巻き取りドラムからエアホースの先端をクレーン設置床上まで引き出す。そして、この引き出したエアホースの先端をコンプレッサに接続し、コンプレッサを駆動して、エアホースを通して圧縮空気をエアジャッキに注入する。これにより、エアジャッキを伸長させて、エアジャッキにより支持柱の外面に載荷し、反力部材を支持柱に仮固定する。その後、エアジャッキのバルブを閉じてエアジャッキによる載荷を保持し、その後、コンプレッサからエアホースを取り外して巻き取りドラムに収納しておく。
よって、昇降ジャッキにより仮設屋根を下降させる(ジャッキダウン)際、エアホースを巻き取りドラムに収納しておくので、エアホースが邪魔にならず、ジャッキダウン作業を円滑に行うことができる。
また、コンプレッサを駆動することで、迅速にエアジャッキに軸力を導入できるので、従来と比べて工期を短縮できる。
According to the present invention, the reaction force member is temporarily fixed to the support column by the following procedure. That is, the box member of the reaction force member is put on the upper end of the support column, and in this state, the tip of the air hose is pulled out from the take-up drum to the floor where the crane is installed. Then, the tip of the drawn air hose is connected to the compressor, the compressor is driven, and compressed air is injected into the air jack through the air hose. As a result, the air jack is extended, loaded on the outer surface of the support column by the air jack, and the reaction force member is temporarily fixed to the support column. After that, the valve of the air jack is closed to hold the load by the air jack, and then the air hose is removed from the compressor and stored in the take-up drum.
Therefore, when the temporary roof is lowered (jacked down) by the elevating jack, the air hose is wound up and stored in the drum, so that the air hose does not get in the way and the jacking down work can be smoothly performed.
Further, by driving the compressor, the axial force can be quickly introduced into the air jack, so that the construction period can be shortened as compared with the conventional case.

第2の発明の構造物解体方法は、上述の構造物解体システムを用いて構造物を解体する解体方法であって、当該構造物の所定の既存柱を支持柱とし、当該支持柱に仮支持させて前記構造物の所定階の上に前記仮設屋根を構築する第1工程(例えば、後述のステップS1)と、少なくとも前記支持柱を残して前記所定階から1層分を解体する第2工程(例えば、後述のステップS2)と、前記支持柱による前記仮設屋根の仮支持を解除し、前記仮設屋根を前記支持柱に沿って1層分下降させて、その後、前記仮設屋根を前記支持柱に再度仮支持させる第3工程(例えば、後述のステップS3〜S5)と、前記反力部材を前記支持柱から取り外して、前記支持柱の上部を撤去し、その後、当該支持柱の頂部に前記反力部材を再度被せて、前記反力部材を前記支持柱に再度仮固定する第4工程(例えば、後述のステップS6)と、前記第2工程から第4工程までを繰り返す第5工程(例えば、後述のステップS7)と、を備え、前記反力部材を前記支持柱の頂部に仮固定する際には、前記反力部材を前記支持柱の頂部に配置し、この状態で、前記巻き取りドラムからエアホース(例えば、後述のエアホース63)の先端を前記仮設屋根上に引き出してコンプレッサ(例えば、後述のコンプレッサ65)に接続し、当該コンプレッサから圧縮空気を前記エアジャッキに供給することで、前記反力部材を前記支持柱の頂部に仮固定し、その後、前記コンプレッサから前記エアホースを取り外して前記巻き取りドラムに収納することを特徴とする。 The structure dismantling method of the second invention is a dismantling method of dismantling a structure using the above-mentioned structure dismantling system, in which a predetermined existing pillar of the structure is used as a support pillar and provisionally supported by the support pillar. The first step of constructing the temporary roof on the predetermined floor of the structure (for example, step S1 described later) and the second step of disassembling one layer from the predetermined floor while leaving at least the support pillars. (For example, in step S2 described later), the temporary support of the temporary roof by the support pillars is released, the temporary roof is lowered by one layer along the support pillars, and then the temporary roof is lowered by the support pillars. In the third step (for example, steps S3 to S5 described later) of temporarily supporting the support column again, the reaction force member is removed from the support column, the upper part of the support column is removed, and then the top of the support column is covered with the above. A fourth step (for example, step S6 described later) in which the reaction force member is re-covered and the reaction force member is temporarily fixed to the support column, and a fifth step (for example, step S6) in which the second step to the fourth step are repeated are repeated. When the reaction force member is temporarily fixed to the top of the support column, the reaction force member is placed on the top of the support column, and in this state, the winding is performed. The tip of an air hose (for example, an air hose 63 described later) is pulled out from a drum onto the temporary roof and connected to a compressor (for example, a compressor 65 described later), and compressed air is supplied from the compressor to the air jack. The reaction force member is temporarily fixed to the top of the support column, and then the air hose is removed from the compressor and stored in the take-up drum.

この発明によれば、第1の発明と同様の効果がある。 According to the present invention, the same effect as that of the first invention is obtained.

本発明によれば、解体対象階を覆うクレーン設置床をジャッキダウンさせながら、構造物を上階から下層階に向かって解体する場合に、クレーン設置床のジャッキダウン作業を円滑に行うことができる、構造物解体システムおよび構造物解体方法を提供できる。 According to the present invention, when the structure is dismantled from the upper floor to the lower floor while the crane installation floor covering the dismantling target floor is jacked down, the crane installation floor can be smoothly jacked down. , Structure dismantling systems and structure dismantling methods can be provided.

本発明の一実施形態に係る構造物解体システムが設けられた既存建物の側面図である。It is a side view of the existing building provided with the structure demolition system which concerns on one Embodiment of this invention. 図1の構造物解体システムの破線Aで囲んだ部分の拡大図である。It is an enlarged view of the part surrounded by the broken line A of the structure dismantling system of FIG. 構造物解体システムの反力部材を構成するボックス部材の縦断面図である。It is a vertical cross-sectional view of the box member which constitutes the reaction force member of the structure dismantling system. 反力部材を支持柱に仮固定する手順の説明図である。It is explanatory drawing of the procedure of temporarily fixing a reaction force member to a support column. 構造物解体システムを用いて既存建物を解体する手順のフローチャートである。It is a flowchart of the procedure of dismantling an existing building using a structure dismantling system. 既存建物の解体手順の説明図(その1、既存建物を屋上階から2層分解体した状態)である。It is explanatory drawing of the dismantling procedure of an existing building (No. 1, the state where the existing building was disassembled into two layers from the rooftop floor). 既存建物の解体手順の説明図(その2、クレーン設置床を1層分下降させた状態)である。It is an explanatory view of the dismantling procedure of an existing building (No. 2, the state where the crane installation floor is lowered by one layer). 既存建物の解体手順の説明図(その3、支持柱の上部を切断した状態)である。It is explanatory drawing (3, the state which cut the upper part of the support pillar) of the dismantling procedure of an existing building.

本発明は、解体対象階を覆うクレーン設置床をジャッキダウンさせながら、構造物を上階から下層階に向かって解体する場合に、クレーン設置床を支持する支持柱とクレーン設置床を下降させる昇降装置との間にエアジャッキを配置し、このエアジャッキにより昇降装置を支持柱に仮固定させることで、クレーン設置床のジャッキダウン作業を円滑に行うことができる、構造物解体システムおよび構造物解体方法である。
以下、本発明の一実施形態について、図面を参照しながら説明する。
図1は、本発明の一実施形態に係る構造物解体システム2が設けられた構造物としての既存建物1の側面図である。
既存建物1は、n(nは自然数)階建てのラーメン構造の建物であり、平面視で長方形状である。この既存建物1は、複数のH形鋼である既存柱11と、複数の鉄骨造の既存梁12と、鉄筋コンクリート造の既存床13と、を備える。ここで、既存柱11の一部を、クレーン設置床20を支持する支持柱11Aとする。
According to the present invention, when the structure is dismantled from the upper floor to the lower floor while the crane installation floor covering the floor to be dismantled is jacked down, the support pillars supporting the crane installation floor and the crane installation floor are lowered. A structure dismantling system and structure dismantling that can smoothly jack down the crane installation floor by arranging an air jack between the device and the air jack and temporarily fixing the lifting device to the support column by this air jack. The method.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of an existing building 1 as a structure provided with a structure dismantling system 2 according to an embodiment of the present invention.
The existing building 1 is an n (n is a natural number) building with a rigid frame structure, and has a rectangular shape in a plan view. The existing building 1 includes a plurality of existing columns 11 made of H-shaped steel, a plurality of existing steel-framed beams 12, and an existing reinforced concrete floor 13. Here, a part of the existing pillar 11 is a support pillar 11A that supports the crane installation floor 20.

この既存建物1を、以下の構造物解体システム2を用いて解体する。
構造物解体システム2は、既存建物1の屋上階に構築された仮設屋根としてのクレーン設置床20と、クレーン設置床20上に設置されたクレーン21と、支持柱11Aに取り付けられてクレーン設置床20を支持柱11Aに沿って下降させる昇降装置22と、クレーン設置床20に設けられて支持柱11Aの継手部14(図7参照)の上面に係止可能な係止装置23と、既存建物1の外周に沿って設置された外周足場24と、クレーン設置床20を外周足場24に沿って移動させるスライド機構25と、を備える。
The existing building 1 is demolished using the following structure demolition system 2.
The structure dismantling system 2 includes a crane installation floor 20 as a temporary roof constructed on the roof floor of the existing building 1, a crane 21 installed on the crane installation floor 20, and a crane installation floor attached to a support column 11A. An elevating device 22 that lowers 20 along the support column 11A, a locking device 23 that is provided on the crane installation floor 20 and can be locked to the upper surface of the joint portion 14 (see FIG. 7) of the support column 11A, and an existing building. An outer peripheral scaffold 24 installed along the outer circumference of 1 and a slide mechanism 25 for moving the crane installation floor 20 along the outer peripheral scaffold 24 are provided.

クレーン設置床20は、既存建物1の屋上階に構築されることで、既存建物1の解体対象階の上面を覆うものである。
係止装置23は、かんぬき梁30と、このかんぬき梁30同士を接近あるいは離間させる方向に略水平に移動する一対の開閉機構31と、を備える。支持柱11Aの側面には、継手部14が側方に延びており、係止装置23は、この継手部14の上面にかんぬき梁30を移動させて係止させることが可能である。
外周足場24は、地表面上に構築された複数段の枠組足場である。
スライド機構25は、クレーン設置床20に設けられて上下に延びるガイド部材40と、外周足場24に複数段設けられてガイド部材40に係止した状態でスライド可能な移動壁繋ぎ41と、を備える。
The crane installation floor 20 is constructed on the rooftop floor of the existing building 1 to cover the upper surface of the floor to be demolished of the existing building 1.
The locking device 23 includes a perforated beam 30 and a pair of opening / closing mechanisms 31 that move substantially horizontally in a direction in which the perforated beams 30 approach or separate from each other. A joint portion 14 extends laterally on the side surface of the support column 11A, and the locking device 23 can move the through beam 30 to the upper surface of the joint portion 14 to lock it.
The outer peripheral scaffold 24 is a multi-stage framework scaffold constructed on the ground surface.
The slide mechanism 25 includes a guide member 40 provided on the crane installation floor 20 and extending vertically, and a moving wall connecting 41 provided on the outer peripheral scaffold 24 in a plurality of stages and slidable in a state of being locked to the guide member 40. ..

図2は、図1の構造物解体システム2の破線Aで囲んだ部分の拡大図である。
昇降装置22は、支持柱11Aの上端に取り付けられて略水平に延びる反力部材50と、反力部材50に巻かれて一端側がクレーン設置床20に連結された吊り材51と、クレーン設置床20に設けられて吊り材51の他端側を引っ張る昇降ジャッキとしてのストランドジャッキ52と、を備える。
クレーン設置床20の上面には、門型状のジャッキ支持部53が回動可能に設けられており、ストランドジャッキ52は、このジャッキ支持部53に設けられている。
また、クレーン設置床20の上面でかつ支持柱11Aを挟んでジャッキ支持部53の反対側の位置には、門型状の吊り材支持部54が回動可能に設けられており、吊り材51の一端は、この吊り材支持部54に連結されている。
FIG. 2 is an enlarged view of a portion of the structure dismantling system 2 of FIG. 1 surrounded by a broken line A.
The lifting device 22 includes a reaction force member 50 attached to the upper end of the support column 11A and extending substantially horizontally, a suspension member 51 wound around the reaction force member 50 and one end connected to the crane installation floor 20, and a crane installation floor. A strand jack 52 as an elevating jack provided on the 20 and pulling the other end side of the hanging member 51 is provided.
A gate-shaped jack support portion 53 is rotatably provided on the upper surface of the crane installation floor 20, and the strand jack 52 is provided on the jack support portion 53.
Further, a gantry-shaped suspension member support portion 54 is rotatably provided on the upper surface of the crane installation floor 20 and at a position opposite to the jack support portion 53 with the support pillar 11A interposed therebetween. One end of the suspension member is connected to the suspension member support portion 54.

反力部材50は、支持柱11Aの上端に被せられて上端が塞がれた矩形筒状のボックス部材60と、ボックス部材60の上に設けられて略水平に延びる反力梁61と、ボックス部材60の内壁面に設けられてH形鋼である支持柱11Aの外面に当接可能な一対のエアジャッキ62と、ボックス部材60の側面に設けられてエアジャッキ62のエアホース63が巻き取られた巻き取りドラム64と、を備える。 The reaction force member 50 includes a rectangular tubular box member 60 that is placed over the upper end of the support column 11A and the upper end is closed, a reaction force beam 61 that is provided on the box member 60 and extends substantially horizontally, and a box. A pair of air jacks 62 provided on the inner wall surface of the member 60 and capable of contacting the outer surface of the support column 11A made of H-shaped steel, and an air hose 63 of the air jack 62 provided on the side surface of the box member 60 are wound up. It also includes a take-up drum 64.

反力梁61は、互いに略平行な一対の水平部材611と、この一対の水平部材611の両端側同士の間に回転自在に支持された一対の滑車612と、を備える。
吊り材51は、一対の滑車612に巻かれており、一端側が吊り材支持部54に連結され、他端側がジャッキ支持部53に固定されたストランドジャッキ52に連結されている。
The reaction beam 61 includes a pair of horizontal members 611 that are substantially parallel to each other, and a pair of pulleys 612 that are rotatably supported between both ends of the pair of horizontal members 611.
The suspension member 51 is wound around a pair of pulleys 612, one end of which is connected to the suspension member support portion 54, and the other end side of which is connected to a strand jack 52 fixed to the jack support portion 53.

以上の昇降装置22では、ストランドジャッキ52が吊り材51を引っ張ると、クレーン設置床20が支持柱11Aに対して上昇する。一方、ストランドジャッキ52が吊り材51を送り出すと、クレーン設置床20が支持柱11Aに対して下降する(図7参照)。 In the above elevating device 22, when the strand jack 52 pulls the suspension member 51, the crane installation floor 20 rises with respect to the support pillar 11A. On the other hand, when the strand jack 52 sends out the suspension member 51, the crane installation floor 20 descends with respect to the support pillar 11A (see FIG. 7).

図3は、反力部材50のボックス部材60の縦断面図である。
エアジャッキ62は、コンプレッサ65(図4参照)からエアホース63を通して圧縮空気を注入することで厚さtを変更可能となっている。
巻き取りドラム64には、エアホース63が付勢力によって巻き取られている。このエアホース63の一端側は、ボックス部材60の側面に形成された貫通孔を通して、エアジャッキ62に接続されている。エアホース63の他端側には、ロープ66が連結されており、このロープ66を下方から引っ張ることで、エアホース63の他端側を下方に引き出せるようになっている。
FIG. 3 is a vertical cross-sectional view of the box member 60 of the reaction force member 50.
The thickness t of the air jack 62 can be changed by injecting compressed air from the compressor 65 (see FIG. 4) through the air hose 63.
An air hose 63 is wound around the take-up drum 64 by an urging force. One end side of the air hose 63 is connected to the air jack 62 through a through hole formed on the side surface of the box member 60. A rope 66 is connected to the other end side of the air hose 63, and by pulling the rope 66 from below, the other end side of the air hose 63 can be pulled out downward.

したがって、反力部材50を支持柱11Aに仮固定する場合、図4に示すように、反力部材50を支持柱11Aの上端に被せて、この状態で、ロープ66を下方から引っ張ることで、巻き取りドラム64からエアホース63の先端をクレーン設置床20まで引き出す。そして、この引き出したエアホース63の先端をコンプレッサ65に接続し、コンプレッサ65を駆動して、エアホース63を通して圧縮空気をエアジャッキ62に供給する。これにより、エアジャッキ62を伸長させて支持柱11Aの外面に載荷し、反力部材50を支持柱11Aに仮固定する。その後、エアジャッキ62のバルブを閉じてエアジャッキ62による載荷を保持し、次に、コンプレッサ65からエアホース63を取り外して手から放すことで、エアホース63が巻き取りドラム64の付勢力により自動的に巻き取られて収納される。
一方、反力部材50の仮固定を解除する場合、エアジャッキ62のバルブを開いて空気を抜く。これにより、エアジャッキ62が短縮し、反力部材50を支持柱11Aから取り外すことが可能となる。
Therefore, when the reaction force member 50 is temporarily fixed to the support column 11A, as shown in FIG. 4, the reaction force member 50 is placed on the upper end of the support column 11A, and in this state, the rope 66 is pulled from below. Pull out the tip of the air hose 63 from the take-up drum 64 to the crane installation floor 20. Then, the tip of the drawn air hose 63 is connected to the compressor 65, the compressor 65 is driven, and compressed air is supplied to the air jack 62 through the air hose 63. As a result, the air jack 62 is extended and loaded on the outer surface of the support column 11A, and the reaction force member 50 is temporarily fixed to the support column 11A. After that, the valve of the air jack 62 is closed to hold the load by the air jack 62, and then the air hose 63 is removed from the compressor 65 and released from the hand, so that the air hose 63 is automatically driven by the urging force of the take-up drum 64. It is wound up and stored.
On the other hand, when the temporary fixing of the reaction force member 50 is released, the valve of the air jack 62 is opened to release the air. As a result, the air jack 62 is shortened, and the reaction force member 50 can be removed from the support column 11A.

以下、構造物解体システム2を用いて既存建物1を解体する手順について、図5のフローチャートを参照しながら説明する。
ステップS1では、図1に示すように、既存建物1に構造物解体システム2を構築する。
すなわち、既存建物1の屋上階にクレーン設置床20、クレーン21、昇降装置22、係止装置23、およびスライド機構25を構築する。また、既存建物1の周囲に外周足場24を設置する。
ここで、屋上階には支持柱11Aが存在しないため、屋上階に支持柱11Aの代わりに仮設柱15を取り付けて、この仮設柱15の頂部に反力部材50を仮固定しておく。また、係止装置23のかんぬき梁30を、屋上階床レベルの支持柱11Aの上に載置することで、クレーン設置床20を支持柱11Aに仮支持させる。
Hereinafter, the procedure for dismantling the existing building 1 using the structure dismantling system 2 will be described with reference to the flowchart of FIG.
In step S1, as shown in FIG. 1, the structure demolition system 2 is constructed in the existing building 1.
That is, a crane installation floor 20, a crane 21, an elevating device 22, a locking device 23, and a slide mechanism 25 are constructed on the rooftop floor of the existing building 1. In addition, an outer peripheral scaffold 24 will be installed around the existing building 1.
Here, since the support pillar 11A does not exist on the rooftop floor, a temporary pillar 15 is attached to the rooftop floor instead of the support pillar 11A, and the reaction force member 50 is temporarily fixed to the top of the temporary pillar 15. Further, the crane installation floor 20 is temporarily supported by the support pillar 11A by placing the crane beam 30 of the locking device 23 on the support pillar 11A at the rooftop floor level.

ステップS2では、図6に示すように、クレーン21を用いて、支持柱11Aを残して既存建物1を屋上階から2層分解体する。このとき、支持柱11Aの継手部14を残すようにする。
なお、後述のステップS7においてステップS2を繰り返す場合には、既存建物1を2層分ではなく1層分解体するものとする。
In step S2, as shown in FIG. 6, a crane 21 is used to disassemble the existing building 1 into two layers from the rooftop floor, leaving the support columns 11A. At this time, the joint portion 14 of the support column 11A is left.
When step S2 is repeated in step S7 described later, the existing building 1 is disassembled into one layer instead of two layers.

ステップS3では、支持柱11Aによるクレーン設置床20の仮支持を解除する。具体的には、ストランドジャッキ52により吊り材51に張力を導入して、クレーン設置床20少し上方に持ち上げて地切りする。この状態で、係止装置23の開閉機構31を駆動して、一対のかんぬき梁30を支持柱11Aの継手部14の上から退避させて、支持柱11Aによる仮支持を解除する。 In step S3, the temporary support of the crane installation floor 20 by the support pillar 11A is released. Specifically, tension is introduced into the suspension member 51 by the strand jack 52, and the crane installation floor 20 is lifted slightly upward to cut the ground. In this state, the opening / closing mechanism 31 of the locking device 23 is driven to retract the pair of punching beams 30 from above the joint portion 14 of the support column 11A, and the temporary support by the support column 11A is released.

ステップS4では、図7に示すように、ストランドジャッキ52を駆動して、クレーン設置床20を支持柱11Aに沿って1層分下降させる。このとき、ガイド部材40が移動壁繋ぎ41に沿って下降して、移動壁繋ぎ41がガイド部材40に水平方向に係止した状態でスライドする。
ステップS5では、図7に示すように、クレーン設置床20を支持柱11Aに再度仮支持させる。すなわち、係止装置23の開閉機構31を駆動して、かんぬき梁30を支持柱11Aの継手部14の上に位置させる。次に、ストランドジャッキ52によりクレーン設置床20を下降させて、かんぬき梁30を支持柱11Aの継手部14の上面に係止させる。
In step S4, as shown in FIG. 7, the strand jack 52 is driven to lower the crane installation floor 20 by one layer along the support pillar 11A. At this time, the guide member 40 descends along the moving wall connection 41 and slides in a state where the moving wall connection 41 is horizontally locked to the guide member 40.
In step S5, as shown in FIG. 7, the crane installation floor 20 is temporarily supported by the support pillar 11A again. That is, the opening / closing mechanism 31 of the locking device 23 is driven to position the through beam 30 on the joint portion 14 of the support column 11A. Next, the crane installation floor 20 is lowered by the strand jack 52, and the piercing beam 30 is locked to the upper surface of the joint portion 14 of the support column 11A.

ステップS6では、図8に示すように、支持柱11Aの上部を切断して撤去する。具体的には、反力部材50の仮固定を解除し、この反力部材50をクレーン21で吊り上げて、支持柱11Aから取り外す。次に、支持柱11Aの上部を切断して撤去する。その後、反力部材50をクレーン21で吊り上げて、支持柱11Aの頂部に再度被せて、この反力部材50を支持柱11Aの頂部に再度仮固定しておく。また、外周足場24の上部つまりクレーン設置床20よりも上方に突出した部分を解体し、取り外した移動壁繋ぎ41をガイド部材40の下部に盛り替える。
ステップS7は、ステップS2からステップS6までを繰り返して、既存建物1を屋上階から下階に向かって解体する。
In step S6, as shown in FIG. 8, the upper part of the support column 11A is cut and removed. Specifically, the temporary fixing of the reaction force member 50 is released, and the reaction force member 50 is lifted by the crane 21 and removed from the support column 11A. Next, the upper part of the support column 11A is cut and removed. After that, the reaction force member 50 is lifted by the crane 21 and put on the top of the support pillar 11A again, and the reaction force member 50 is temporarily fixed to the top of the support pillar 11A again. Further, the upper part of the outer peripheral scaffold 24, that is, the portion protruding above the crane installation floor 20, is disassembled, and the removed moving wall connecting 41 is replaced with the lower part of the guide member 40.
In step S7, steps S2 to S6 are repeated to dismantle the existing building 1 from the rooftop floor to the lower floor.

本実施形態によれば、以下のような効果がある。
(1)ストランドジャッキ52によりクレーン設置床20を下降させる(ジャッキダウン)際、付勢力によりエアジャッキ62のエアホース63を巻き取りドラム64に収納しておくので、エアホース63が邪魔にならず、ジャッキダウン作業を円滑に行うことができる。
また、コンプレッサ65を駆動することで、迅速にエアジャッキ62に軸力を導入できるので、従来と比べて工期を短縮できる。
エアジャッキ62を用いたので、ユニブロックのようなねじで厚さを変更可能な仮固定ジャッキと比べて、厚みが薄くなり、反力部材50を支持柱11Aに取り付ける際に、エアジャッキ62が支持柱11Aに引っ掛かるのを防止できる。また、エアジャッキ62の厚みが薄くなったことで、支持柱の柱形状の変更に容易に追従可能である。
(2)支持柱11Aと昇降装置22の内壁面との間にエアジャッキ62を設けたので、クレーン設置床20を支持柱11Aに比較的短時間で仮固定でき、既存建物1を短工期で解体できる。
According to this embodiment, there are the following effects.
(1) When the crane installation floor 20 is lowered (jacked down) by the strand jack 52, the air hose 63 of the air jack 62 is wound up and stored in the drum 64 by an urging force, so that the air hose 63 does not get in the way and the jack is used. Down work can be performed smoothly.
Further, by driving the compressor 65, the axial force can be quickly introduced into the air jack 62, so that the construction period can be shortened as compared with the conventional case.
Since the air jack 62 is used, the thickness is thinner than that of the temporary fixing jack whose thickness can be changed with a screw such as a uniblock, and when the reaction force member 50 is attached to the support column 11A, the air jack 62 is used. It is possible to prevent the support pillar 11A from being caught. Further, since the thickness of the air jack 62 is reduced, it is possible to easily follow the change in the column shape of the support column.
(2) Since the air jack 62 is provided between the support pillar 11A and the inner wall surface of the lifting device 22, the crane installation floor 20 can be temporarily fixed to the support pillar 11A in a relatively short time, and the existing building 1 can be temporarily fixed in a short construction period. Can be disassembled.

なお、本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。 The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.

1…既存建物(構造物) 2…構造物解体システム
11…既存柱 11A…支持柱 12…既存梁 13…既存床 14…継手部
15…仮設柱
20…クレーン設置床(仮設屋根) 21…クレーン 22…昇降装置
23…係止装置 24…外周足場 25…スライド機構
30…かんぬき梁 31…開閉機構 40…ガイド部材 41…移動壁繋ぎ
50…反力部材 51…吊り材 52…ストランドジャッキ(昇降ジャッキ)
53…ジャッキ支持部 54…吊り材支持部
60…ボックス部材 61…反力梁 62…エアジャッキ 63…エアホース
64…ドラム 65…コンプレッサ 66…ロープ
611…水平部材 612…滑車
1 ... Existing building (structure) 2 ... Structure dismantling system 11 ... Existing pillar 11A ... Support pillar 12 ... Existing beam 13 ... Existing floor 14 ... Joint 15 ... Temporary pillar 20 ... Crane installation floor (temporary roof) 21 ... Crane 22 ... Elevating device 23 ... Locking device 24 ... Outer scaffolding 25 ... Slide mechanism 30 ... Crane beam 31 ... Opening and closing mechanism 40 ... Guide member 41 ... Moving wall connection 50 ... Reaction force member 51 ... Suspension material 52 ... Strand jack (elevating jack) )
53 ... Jack support 54 ... Suspension material support 60 ... Box member 61 ... Reaction beam 62 ... Air jack 63 ... Air hose 64 ... Drum 65 ... Compressor 66 ... Rope 611 ... Horizontal member 612 ... Pulley

Claims (2)

構造物を解体する解体システムであって、
構造物の所定階の上に構築された仮設屋根と、当該仮設屋根を支持する既存柱である支持柱と、前記仮設屋根を前記支持柱に沿って下降させる昇降装置と、を備え、
当該昇降装置は、前記支持柱の上端に取り付けられて略水平に延びてかつ両端側に回転自在に設けられた一対の滑車を有する反力部材と、当該反力部材の滑車に巻かれて一端側が前記仮設屋根に連結された吊り材と、前記仮設屋根に設けられて前記吊り材の他端側に設けられた昇降ジャッキと、を備え、
前記反力部材は、前記支持柱の上端に被せられて上端が塞がれた矩形筒状のボックス部材と、当該ボックス部材の上に設けられて略水平に延びる反力梁と、前記ボックス部材の内壁面に設けられて前記支持柱の側面に当接可能な仮固定用のエアジャッキと、前記ボックス部材の側面に設けられた巻き取りドラムと、を備えることを特徴とする構造物解体システム。
A dismantling system that dismantles structures
A temporary roof constructed on a predetermined floor of the structure, a support pillar which is an existing pillar supporting the temporary roof, and an elevating device for lowering the temporary roof along the support pillar are provided.
The elevating device includes a reaction force member having a pair of pulleys attached to the upper end of the support column, extending substantially horizontally and rotatably provided on both ends, and one end wound around the pulleys of the reaction force member. A suspension material whose side is connected to the temporary roof and an elevating jack provided on the temporary roof and provided on the other end side of the suspension material are provided.
The reaction force member includes a rectangular tubular box member that is placed over the upper end of the support column and the upper end is closed, a reaction force beam that is provided on the box member and extends substantially horizontally, and the box member. A structure dismantling system including an air jack for temporary fixing provided on the inner wall surface of the box member and capable of contacting the side surface of the support column, and a take-up drum provided on the side surface of the box member. ..
請求項1に記載の構造物解体システムを用いて構造物を解体する解体方法であって、
当該構造物の所定の既存柱を支持柱とし、当該支持柱に仮支持させて前記構造物の所定階の上に前記仮設屋根を構築する第1工程と、
少なくとも前記支持柱を残して前記所定階から1層分を解体する第2工程と、
前記支持柱による前記仮設屋根の仮支持を解除し、前記仮設屋根を前記支持柱に沿って1層分下降させて、その後、前記仮設屋根を前記支持柱に再度仮支持させる第3工程と、
前記反力部材を前記支持柱から取り外して、前記支持柱の上部を撤去し、その後、当該支持柱の頂部に前記反力部材を再度被せて、前記反力部材を前記支持柱に再度仮固定する第4工程と、
前記第2工程から第4工程までを繰り返す第5工程と、を備え、
前記反力部材を前記支持柱の頂部に仮固定する際には、前記反力部材を前記支持柱の頂部に配置し、この状態で、前記巻き取りドラムからエアホースの先端を前記仮設屋根上に引き出してコンプレッサに接続し、当該コンプレッサから圧縮空気を前記エアジャッキに供給することで、前記反力部材を前記支持柱の頂部に仮固定し、その後、前記コンプレッサから前記エアホースを取り外して前記巻き取りドラムに収納することを特徴とする構造物解体方法。
A dismantling method for dismantling a structure using the structure dismantling system according to claim 1.
The first step of constructing the temporary roof on the predetermined floor of the structure by using the predetermined existing pillar of the structure as a support pillar and temporarily supporting the support pillar.
The second step of dismantling one layer from the predetermined floor while leaving at least the support pillar,
A third step of releasing the temporary support of the temporary roof by the support pillars, lowering the temporary roof by one layer along the support pillars, and then temporarily supporting the temporary roof to the support pillars again.
The reaction force member is removed from the support column, the upper part of the support column is removed, and then the reaction force member is re-covered on the top of the support column, and the reaction force member is temporarily fixed to the support column again. 4th step to do
The fifth step, which repeats the second step to the fourth step, is provided.
When the reaction force member is temporarily fixed to the top of the support column, the reaction force member is placed on the top of the support column, and in this state, the tip of the air hose from the take-up drum is placed on the temporary roof. By pulling out and connecting to the compressor and supplying compressed air from the compressor to the air jack, the reaction force member is temporarily fixed to the top of the support column, and then the air hose is removed from the compressor and the winding is performed. A structure dismantling method characterized by being stored in a drum.
JP2020090979A 2020-05-26 2020-05-26 Structure dismantling system and structure dismantling method Active JP6950041B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020090979A JP6950041B1 (en) 2020-05-26 2020-05-26 Structure dismantling system and structure dismantling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020090979A JP6950041B1 (en) 2020-05-26 2020-05-26 Structure dismantling system and structure dismantling method

Publications (2)

Publication Number Publication Date
JP6950041B1 true JP6950041B1 (en) 2021-10-13
JP2021188263A JP2021188263A (en) 2021-12-13

Family

ID=78001385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020090979A Active JP6950041B1 (en) 2020-05-26 2020-05-26 Structure dismantling system and structure dismantling method

Country Status (1)

Country Link
JP (1) JP6950041B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0441869A (en) * 1990-06-06 1992-02-12 Touden Sekkei Kk Drill method and drill device for chimney inner surface
JP2005068758A (en) * 2003-08-22 2005-03-17 Fujita Corp Chimney washing demolition device
JP6253480B2 (en) * 2014-03-27 2017-12-27 株式会社熊谷組 Rebar cutting method and rebar cutting device
JP6920118B2 (en) * 2017-07-11 2021-08-18 大成建設株式会社 Demolition system for existing structures
JP6893188B2 (en) * 2018-03-09 2021-06-23 大成建設株式会社 Demolition system and demolition method of existing structures

Also Published As

Publication number Publication date
JP2021188263A (en) 2021-12-13

Similar Documents

Publication Publication Date Title
JP6503716B2 (en) Demolition system and demolition method
JP6474151B2 (en) Dismantling system and dismantling method
JP2010242429A (en) Demolition method for steel tower
JP6893188B2 (en) Demolition system and demolition method of existing structures
JP6950041B1 (en) Structure dismantling system and structure dismantling method
JP3881343B2 (en) Method and apparatus for disassembling cylindrical structure
JP6508958B2 (en) Demolition system and demolition method
JP6508959B2 (en) Demolition system and demolition method
JP6391134B2 (en) Dismantling method and dismantling system
JP5435569B2 (en) Dismantling equipment and method for dismantling steel tower support
JP6991271B2 (en) Structure demolition system and structure demolition method
JP2019015151A (en) Demolition system of existing structure
JP6318076B2 (en) Steel tower dismantling method and steel tower dismantling apparatus
JP6029066B2 (en) Demolition method for multi-story buildings
JP2018091098A (en) Temporary strut and construction method of roof frame structure
JP6967383B2 (en) How to dismantle an existing structure
JP5948828B2 (en) Lifting device used for assembling cargo lift for building demolition work, cargo lift for building demolition work, and assembling method thereof
JP3220397B2 (en) Elevating scaffold
JP6418825B2 (en) Jack reaction force support member and building dismantling method using the reaction force support member
JP3532161B2 (en) Tower construction machine and tower construction method
JP7245098B2 (en) Relocation method of mast guide device for tower assembly work
JP2009108476A (en) Building demolition method
JP2023067542A (en) Net support device and method for dismantling structure using net support device
JPH0321777A (en) Construction method of iron-frame pillar
JP2023023264A (en) Crane elevating system, method of constructing structure, and method of dismantling structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210714

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20210714

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: 20210827

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210922

R150 Certificate of patent or registration of utility model

Ref document number: 6950041

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150