JP6920118B2 - Demolition system for existing structures - Google Patents

Demolition system for existing structures Download PDF

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JP6920118B2
JP6920118B2 JP2017135253A JP2017135253A JP6920118B2 JP 6920118 B2 JP6920118 B2 JP 6920118B2 JP 2017135253 A JP2017135253 A JP 2017135253A JP 2017135253 A JP2017135253 A JP 2017135253A JP 6920118 B2 JP6920118 B2 JP 6920118B2
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installation floor
crane installation
crane
support
jack
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JP2019015151A (en
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英樹 市原
英樹 市原
清志 矢島
清志 矢島
誠 萱嶋
誠 萱嶋
裕介 野口
裕介 野口
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Taisei Corp
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本発明は、既存構造物を解体する解体システムに関する。 The present invention relates to a dismantling system for dismantling an existing structure.

従来より、設備や躯体の老朽化を理由として、既存建物の解体が行われるが、この既存建物を解体する方法としては、以下のような方法がある。
例えば、地表面から既存建物に沿ってマストを設置し、このマストにタワークレーンを取り付けて、このタワークレーンにより解体材を荷下ろしする方法がある。この場合、マストを既存建物の構造体に仮固定しておき、建物の解体に伴って、リフトダウンさせる(特許文献1参照)。
Conventionally, existing buildings have been demolished due to the deterioration of equipment and skeletons. There are the following methods for demolishing existing buildings.
For example, there is a method in which a mast is installed from the ground surface along an existing building, a tower crane is attached to the mast, and the demolition material is unloaded by the tower crane. In this case, the mast is temporarily fixed to the structure of the existing building and lifted down as the building is demolished (see Patent Document 1).

しかしながら、地表面から既存建物に沿ってタワークレーンを用いた場合では、地表面から最上階まで大型のマストを構築する必要があるため、解体工事が大掛かりとなって、施工費用が増大する、という問題があった。 However, when a tower crane is used from the ground surface to the existing building, it is necessary to build a large mast from the ground surface to the top floor, so the demolition work becomes large and the construction cost increases. There was a problem.

この問題を解決するため、以下の特許文献2のような解体方法が提案されている。すなわち、既存建物の屋上階の既存床の一部を含んでクレーン設置床とし、このクレーン設置床上にクレーンを設置するとともに、このクレーン設置床を既存柱である支持柱に仮支持させる。そして、クレーンを用いて既存建物を解体しながら、クレーン設置床を支持柱に沿って下降させる。 In order to solve this problem, a dismantling method as described in Patent Document 2 below has been proposed. That is, a part of the existing floor on the rooftop floor of the existing building is included as the crane installation floor, the crane is installed on the crane installation floor, and the crane installation floor is temporarily supported by the support pillar which is the existing pillar. Then, while dismantling the existing building using a crane, the crane installation floor is lowered along the support columns.

特開2010−255374号公報JP-A-2010-255374 特開2016−17291号公報Japanese Unexamined Patent Publication No. 2016-17291

しかしながら、既存床の一部を利用してクレーン設置床を構築するため、大掛かりな補強が必要であり、施工費用が増大する、という問題があった。 However, since a crane installation floor is constructed using a part of the existing floor, there is a problem that large-scale reinforcement is required and the construction cost increases.

本発明は、施工費用を低減できる既存構造物の解体システムを提供することを目的とする。 An object of the present invention is to provide a dismantling system for an existing structure that can reduce construction costs.

請求項1、2に記載の既存構造物の解体システムは、既存構造物(例えば、後述の既存建物1)を解体する解体システム(例えば、後述の解体システム2)であって、既存構造物の所定のフロアの上に構築されたクレーン設置床(例えば、後述のクレーン設置床20)と、当該クレーン設置床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、前記クレーン設置床上に設置されたクレーン(例えば、後述のクレーン21)と、前記クレーン設置床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、前記支持柱を囲んで設けられた矩形枠状のフレーム(例えば、後述のフレーム40)を備え、前記クレーン設置床は、前記昇降装置のフレーム同士を連結する梁部材(例えば、後述の梁部材30)と、当該梁部材の上に設けられた板状の床部材(例えば、後述の床部材31)と、を備えることを特徴とする。 The dismantling system for an existing structure according to claims 1 and 2 is a dismantling system (for example, a dismantling system 2 described later) for dismantling an existing structure (for example, an existing building 1 described later), and is an existing structure. A crane installation floor constructed on a predetermined floor (for example, the crane installation floor 20 described later), a support pillar (for example, a support pillar 11A described later) which is an existing pillar supporting the crane installation floor, and the crane. The elevating device includes a crane installed on the installation floor (for example, a crane 21 described later) and an elevating device (for example, an elevating device 22 described later) for lowering the crane installation floor along the support pillar. A rectangular frame-shaped frame (for example, a frame 40 described later) provided around the support pillar is provided, and the crane installation floor is a beam member (for example, a beam member described later) for connecting the frames of the elevating device to each other. 30) and a plate-shaped floor member (for example, a floor member 31 described later) provided on the beam member are provided.

この発明によれば、解体システムを、支持柱、クレーン設置床、クレーン、および昇降装置を含んで構成し、クレーンで既存構造物を解体しながら、昇降装置によりクレーン設置床を支持柱に沿って下降させた。よって、従来のようにクレーン設置床に既存床の一部を利用しないので、大掛かりな補強が不要となり、施工費用を削減できる。
また、昇降装置のフレーム同士を梁部材で連結し、この梁部材の上に床部材を設けてクレーン設置床を構成した。よって、梁部材のサイズや長さを適宜選択することで、クレーン設置床を任意の大きさで容易に構築できる。また、梁部材をフレームから取り外すことで昇降装置を容易に転用できるので、施工コストを低減できる。
According to the present invention, the dismantling system is configured to include a support column, a crane installation floor, a crane, and an elevating device, and while dismantling an existing structure with a crane, the elevating device raises the crane installation floor along the support column. It was lowered. Therefore, unlike the conventional case, a part of the existing floor is not used for the crane installation floor, so that large-scale reinforcement is not required and the construction cost can be reduced.
Further, the frames of the lifting device were connected to each other by a beam member, and a floor member was provided on the beam member to form a crane installation floor. Therefore, the crane installation floor can be easily constructed with an arbitrary size by appropriately selecting the size and length of the beam member. Further, since the elevating device can be easily diverted by removing the beam member from the frame, the construction cost can be reduced.

請求項1、2に記載の既存構造物の解体システムは、前記昇降装置は、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64)を有する反力部材(例えば、後述の反力部材41)と、当該反力部材の滑車に巻かれて一端側が前記フレームに連結された吊り材(例えば、後述の吊り材42)と、前記フレームに設けられて前記吊り材の他端側を引っ張る昇降ジャッキ(例えば、後述のストランドジャッキ43)と、をさらに備えることを特徴とする。 In the dismantling system of the existing structure according to claims 1 and 2, the lifting device is attached to the upper end of the support column, extends substantially horizontally, and is rotatably provided on both ends (for example,). , A reaction force member having a pulley 64 described later (for example, a reaction force member 41 described later) and a suspension member wound around the pulley of the reaction force member and one end connected to the frame (for example, a suspension member described later). and 42), the lifting jack to pull the other end of the suspension member provided on the frame (e.g., a strand jack 43) described below, you further comprising a.

この発明によれば、昇降装置を、フレーム、反力部材、吊り材、および昇降ジャッキを含んで構成し、吊り材を反力部材の滑車に巻いて、この吊り材の一端側をフレームに連結し、吊り材の他端側を昇降ジャッキに連結した。よって、昇降ジャッキにより吊り材を引っ張ることで、クレーン設置床が支持柱に対して上昇し、昇降ジャッキにより吊り材を送り出すことで、クレーン設置床が支持柱に対して下降する。したがって、反力部材の滑車を利用することで、単一の昇降ジャッキでクレーン設置床を昇降できるので、施工コストを削減できる。 According to the present invention, the elevating device includes a frame, a reaction force member, a suspension member, and an elevating jack, the suspension member is wound around a pulley of the reaction force member, and one end side of the suspension member is connected to the frame. Then, the other end side of the hanging material was connected to the elevating jack. Therefore, by pulling the suspension material with the elevating jack, the crane installation floor rises with respect to the support pillar, and by sending out the suspension material with the elevating jack, the crane installation floor descends with respect to the support pillar. Therefore, by using the pulley of the reaction force member, the crane installation floor can be raised and lowered with a single lifting jack, so that the construction cost can be reduced.

請求項に記載の既存構造物の解体システムは、前記昇降ジャッキは、複数本のストランドを引っ張ることが可能なストランドジャッキであり、前記吊り材は、当該ストランドジャッキの複数本のストランドのうち一直線上に並ぶ所定の本数のストランドで構成され、前記プーリは、直径が同一のものを前記所定の枚数だけ重ねて構成されていることを特徴とする。 In the dismantling system of the existing structure according to claim 1 , the elevating jack is a strand jack capable of pulling a plurality of strands, and the suspending material is a straight line among the plurality of strands of the strand jack. It is composed of a predetermined number of strands arranged on a line, and the pulley is characterized in that the pulleys having the same diameter are stacked by the predetermined number of strands.

この発明によれば、吊り材を、昇降ジャッキの複数本のストランドのうち一直線上に並ぶ所定本数のストランドで構成した。また、滑車を、直径が同一のプーリを所定の枚数だけ重ねて構成した。よって、同一形状のプーリを使用できるので、滑車の製作が容易となる。 According to the present invention, the suspending material is composed of a predetermined number of strands arranged in a straight line among the plurality of strands of the elevating jack. Further, the pulley was constructed by stacking a predetermined number of pulleys having the same diameter. Therefore, since pulleys having the same shape can be used, the pulley can be easily manufactured.

請求項に記載の既存構造物の解体システムは、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ジャッキ(例えば、後述の仮固定ジャッキ62)と、を備えることを特徴とする。 In the dismantling system of the existing structure according to claim 2 , the reaction force member is a rectangular tubular box member (for example, a box member 60 described later) in which the upper end is covered with the upper end of the support column and the upper end is closed. A reaction beam (for example, a reaction beam 61 described later) provided on the box member and extending substantially horizontally, and a reaction beam 61 provided on the inner wall surface of the box member and capable of contacting the side surface of the support column. It is characterized by including a temporary fixing jack (for example, a temporary fixing jack 62 described later).

この発明によれば、反力部材を、ボックス部材、反力梁、および仮固定ジャッキを含んで構成したので、ボックス部材を支持柱に被せて、このボックス部材内部の仮固定ジャッキを伸縮させて支持柱の側面に当接させることで、反力部材を容易に支持柱に仮固定できる。 According to the present invention, since the reaction force member is configured to include the box member, the reaction force beam, and the temporary fixing jack, the box member is put on the support column and the temporary fixing jack inside the box member is expanded and contracted. By contacting the side surface of the support column, the reaction force member can be easily temporarily fixed to the support column.

請求項に記載の既存構造物の解体システムは、前記仮固定ジャッキは、ねじ(例えば、後述のねじ66)を回転させることで長さ寸法を変更可能であり、前記ボックス部材の側面には、当該ねじが貫通する長孔(例えば、後述の長孔67)が形成されており、前記ねじの先端には、チェーン(例えば、後述のチェーン69)が巻き回されていることを特徴とする。 In the dismantling system of the existing structure according to claim 2 , the temporary fixing jack can be changed in length by rotating a screw (for example, a screw 66 described later), and the side surface of the box member can be changed. A long hole (for example, a long hole 67 described later) through which the screw penetrates is formed, and a chain (for example, a chain 69 described later) is wound around the tip of the screw. ..

この発明によれば、ボックス部材の側面に、仮固定ジャッキのねじが貫通する長孔を形成した。よって、ねじを回転させて仮固定ジャッキの長さ寸法を変更した際に、ねじの位置が多少動いても、このねじが長孔に引っ掛かることはない。
また、ねじの先端にチェーンを巻き回したので、チェーンを下方から引っ張るだけで、容易に仮固定ジャッキを操作できる。
According to the present invention, an elongated hole through which the screw of the temporary fixing jack penetrates is formed on the side surface of the box member. Therefore, when the screw is rotated to change the length dimension of the temporary fixing jack, even if the position of the screw moves a little, the screw does not get caught in the elongated hole.
Moreover, since the chain is wound around the tip of the screw, the temporary fixing jack can be easily operated by simply pulling the chain from below.

本発明によれば、大掛かりな補強が不要となり、施工費用を削減できる。 According to the present invention, large-scale reinforcement is not required, and the construction cost can be reduced.

本発明の一実施形態に係る既存構造物の解体システムおよびこの解体システムが適用される既存建物の側面図である。It is a side view of the demolition system of the existing structure which concerns on one Embodiment of this invention, and the existing building to which this demolition system is applied. 前記実施形態に係る解体システムおよび既存建物の平面図である。It is a top view of the demolition system and the existing building which concerns on the said Embodiment. 図1のI−I断面図である。FIG. 1 is a cross-sectional view taken along the line II of FIG. 前記実施形態に係る解体システムのイメージ図(その1)である。It is an image diagram (No. 1) of the dismantling system according to the said embodiment. 前記実施形態に係る解体システムのイメージ図(その2)である。It is an image diagram (No. 2) of the dismantling system according to the said embodiment. 図2の破線Aで囲んだ部分の平面図である。It is a top view of the part surrounded by the broken line A of FIG. 図6のII−II矢視図である。FIG. 6 is a view taken along the line II-II of FIG. 図6のIII−III矢視図である。FIG. 6 is a view taken along the line III-III in FIG. 図7および図8のVI−VI断面図である。FIG. 7 is a sectional view taken along line VI-VI of FIGS. 7 and 8. 図7および図8のV−V断面図である。It is a VV cross-sectional view of FIG. 7 and FIG. 図2の破線Aで囲んだ部分のイメージ図である。It is an image figure of the part surrounded by the broken line A of FIG. 前記実施形態に係る解体方法に用いられる解体システムの昇降装置の動作を示す模式図である。It is a schematic diagram which shows the operation of the lifting device of the dismantling system used in the dismantling method which concerns on the said Embodiment. 前記実施形態に係る解体システムのストランドジャッキの先端面および滑車の平面図である。It is a top view of the tip surface and the pulley of the strand jack of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体システムのボックス部材の異なる2方向の縦断面図である。It is a vertical cross-sectional view in two different directions of the box member of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体システムの仮固定ジャッキの動作を示す図である。It is a figure which shows the operation of the temporary fixing jack of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体システムの係止装置の動作を示す模式図(その1)である。It is a schematic diagram (the 1) which shows the operation of the locking device of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体システムの係止装置の動作を示す模式図(その2)である。It is a schematic diagram (No. 2) which shows the operation of the locking device of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体システムの振れ止め装置の平面図である。It is a top view of the steady rest device of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体システムの振れ止め装置の拡大平断面図である。It is an enlarged plan sectional view of the steady rest device of the dismantling system which concerns on the said embodiment. 前記実施形態に係る解体方法により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 by the dismantling method which concerns on the said Embodiment. 前記実施形態に係る既存建物の解体手順の説明図(その1)である。It is explanatory drawing (the 1) of the dismantling procedure of the existing building which concerns on the said embodiment. 前記実施形態に係る既存建物の解体手順の説明図(その2)である。It is explanatory drawing (the 2) of the dismantling procedure of the existing building which concerns on the said embodiment. 前記実施形態に係る既存建物の解体手順の説明図(その3)である。It is explanatory drawing (the 3) of the dismantling procedure of the existing building which concerns on the said embodiment. 前記実施形態に係る既存建物の解体手順の説明図(その4)である。It is explanatory drawing (the 4) of the dismantling procedure of the existing building which concerns on the said embodiment.

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既存構造物の解体システム2およびこの解体システム2が適用される既存構造物としての既存建物1の側面図である。図2は、解体システム2および既存建物1の平面図である。図3は、図1のI−I断面図である。図4よび図5は、解体システム2のイメージ図である。
既存建物1は、n(nは自然数)階の建物であり、平面視で長方形状である。以下、この既存建物1の長手方向をX方向とし、このX方向に略直交する短手方向をY方向とする。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of an existing structure dismantling system 2 according to an embodiment of the present invention and an existing building 1 as an existing structure to which the dismantling system 2 is applied. FIG. 2 is a plan view of the demolition system 2 and the existing building 1. FIG. 3 is a cross-sectional view taken along the line II of FIG. 4 and 5 are image diagrams of the dismantling system 2.
The existing building 1 is a building with n (n is a natural number) floor, and has a rectangular shape in a plan view. Hereinafter, the longitudinal direction of the existing building 1 will be referred to as the X direction, and the lateral direction substantially orthogonal to the X direction will be referred to as the Y direction.

既存建物1は、ラーメン構造であり、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。 The existing building 1 has a rigid frame structure and 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、以下の仮設構造物である解体システム2を用いて解体する。
解体システム2は、既存建物1の屋上階のコア部3上に構築されたクレーン設置床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の上面に係止可能な係止装置23と、クレーン設置床20が水平方向に揺れるのを防止する振れ止め装置24と、を備える。
The existing building 1 is dismantled using the dismantling system 2 which is the following temporary structure.
The dismantling system 2 includes a crane installation floor 20 constructed on the core portion 3 of the rooftop floor of the existing building 1, a crane 21 installed on the crane installation floor 20, and a crane installation floor 20 attached to a support column 11A. A lifting device 22 that lowers the crane 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 of the support column 11A, and the crane installation floor 20 in the horizontal direction. A steady rest device 24 for preventing shaking is provided.

クレーン設置床20は、既存建物1の屋上階中央部に構築されている。このクレーン設置床20は、具体的には、昇降装置22同士を連結する複数のH形鋼である梁部材30と、これら梁部材30の上に載置される覆工板である板状の床部材31と、を備える。 The crane installation floor 20 is constructed in the central part of the rooftop floor of the existing building 1. Specifically, the crane installation floor 20 has a beam member 30 which is a plurality of H-shaped steels connecting the elevating devices 22 to each other, and a plate-shaped lining plate which is placed on the beam member 30. A floor member 31 is provided.

クレーン設置床20の上には、X方向に延びるH形鋼である一対の走行レール32が載置されている。
クレーン21は、走行レール32の上を走行する走行台車33と、この走行台車33に旋回可能に支持されたクレーン本体34と、このクレーン本体34に起伏可能に支持されたジブ35と、このジブ35の先端に吊り下げ支持された図示しないフックと、クレーン本体34に設けられてフックを昇降させる巻上装置36と、を備える。
A pair of traveling rails 32 made of H-shaped steel extending in the X direction are placed on the crane installation floor 20.
The crane 21 includes a traveling bogie 33 traveling on a traveling rail 32, a crane main body 34 rotatably supported by the traveling bogie 33, a jib 35 undulatingly supported by the crane main body 34, and the jib. A hook (not shown) suspended and supported at the tip of the 35, and a hoisting device 36 provided on the crane main body 34 for raising and lowering the hook are provided.

支持柱11Aは、既存柱11の一部の柱であり、既存建物1のコア部3を構成する2列の既存柱11を2本おきに選択したものである。
支持柱11Aのフランジは、X方向に延びており、支持柱11Aのウエブは、Y方向に延びている。
The support pillar 11A is a part of the existing pillar 11, and two rows of existing pillars 11 constituting the core portion 3 of the existing building 1 are selected every two pillars.
The flange of the support column 11A extends in the X direction, and the web of the support column 11A extends in the Y direction.

図6は、図2の破線Aで囲んだ部分の平面図である。図7は、図6のII−II矢視図であり、図8は、図6のIII−III矢視図である。図9は、図7および図8のVI−VI断面図であり、図10は、図7および図8のV−V断面図である。図11は、図2の破線Aで囲んだ部分のイメージ図である。 FIG. 6 is a plan view of the portion surrounded by the broken line A in FIG. FIG. 7 is a view taken along the line II-II of FIG. 6, and FIG. 8 is a view taken along the line III-III of FIG. 9 is a VI-VI cross-sectional view of FIGS. 7 and 8, and FIG. 10 is a V-V cross-sectional view of FIGS. 7 and 8. FIG. 11 is an image diagram of a portion surrounded by a broken line A in FIG.

昇降装置22は、支持柱11Aを囲んでクレーン設置床20の一部となる矩形枠状のフレーム40と、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41と、反力部材41に巻かれて一端側がフレーム40に連結された吊り材42と、フレーム40に設けられて吊り材42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43と、を備える。 The elevating device 22 includes a rectangular frame-shaped frame 40 that surrounds the support column 11A and becomes a part of the crane installation floor 20, a reaction force member 41 that is attached to the upper end of the support column 11A and extends substantially horizontally, and a reaction force member. A suspension member 42 wound around a 41 and one end side connected to a frame 40, and a strand jack 43 as an elevating jack provided on the frame 40 and pulling the other end side of the suspension member 42 are provided.

フレーム40は、矩形枠状の基部50と、基部50に回動可能に設けられた門型状のジャッキ支持部51と、基部50の支持柱11Aを挟んでジャッキ支持部51の反対側の位置に回動可能に設けられた門型状の吊り材支持部52と、を備える。 The frame 40 is located at a position opposite to the rectangular frame-shaped base portion 50, the gate-shaped jack support portion 51 rotatably provided on the base portion 50, and the jack support portion 51 with the support pillar 11A of the base portion 50 interposed therebetween. The gate-shaped suspension member support portion 52 provided so as to be rotatable is provided.

基部50は、略平行にX方向に延びるH形鋼からなる一対の梁部材53Aと、この梁部材53A同士を連結して略平行にY方向に延びるH形鋼からなる一対の梁部材53Bと、を備える。クレーン設置床20の梁部材30は、昇降装置22のフレーム40同士を連結しており、これら昇降装置22の梁部材53A、53B同士の接合部には、クレーン設置床20の梁部材30が連結されている。 The base 50 includes a pair of beam members 53A made of H-shaped steel extending substantially in parallel in the X direction, and a pair of beam members 53B made of H-shaped steel extending substantially parallel in the Y direction by connecting the beam members 53A to each other. , Equipped with. The beam member 30 of the crane installation floor 20 connects the frames 40 of the elevating device 22 to each other, and the beam member 30 of the crane installation floor 20 is connected to the joint between the beam members 53A and 53B of the elevating device 22. Has been done.

一方の梁部材53Aの上面には、ジャッキ支持部51が回動可能に支持されており、他方の梁部材53Aの上面には、吊り材支持部52が回動可能に支持されている。
ストランドジャッキ43は、ジャッキ支持部51に上向きに固定されている。
一対の梁部材53Aの下部には、この梁部材53Aの長さ方向に延びる挿通孔54が形成されている。この挿通孔54の下面には、複数のボルト挿通孔55が梁部材53Aの長さ方向に並んで形成されている(図18参照)。
The jack support portion 51 is rotatably supported on the upper surface of one beam member 53A, and the suspension member support portion 52 is rotatably supported on the upper surface of the other beam member 53A.
The strand jack 43 is fixed upward to the jack support portion 51.
An insertion hole 54 extending in the length direction of the beam member 53A is formed in the lower portion of the pair of beam members 53A. On the lower surface of the insertion hole 54, a plurality of bolt insertion holes 55 are formed side by side in the length direction of the beam member 53A (see FIG. 18).

反力部材41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のフランジの外面に当接可能な仮固定ジャッキ(ユニブロック)62(図14参照)と、を備える。 The reaction force member 41 includes a rectangular tubular box member 60 that covers 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 temporary fixing jack (uniblock) 62 (see FIG. 14) provided on the inner wall surface of the member 60 and capable of contacting the outer surface of the flange of the support column 11A made of H-shaped steel is provided.

反力梁61は、互いに略平行な一対の水平部材63と、この一対の水平部材63の両端側同士の間に回転自在に支持された一対の滑車64と、を備える。
吊り材42は、一対の滑車64に巻かれており、一端側が吊り材支持部52に連結され、他端側がジャッキ支持部51に固定されたストランドジャッキ43に連結されている。
The reaction beam 61 includes a pair of horizontal members 63 that are substantially parallel to each other, and a pair of pulleys 64 that are rotatably supported between both ends of the pair of horizontal members 63.
The suspension member 42 is wound around a pair of pulleys 64, one end side of which is connected to the suspension member support portion 52, and the other end side of which is connected to a strand jack 43 fixed to the jack support portion 51.

以上の昇降装置22では、図12(a)に示すように、ストランドジャッキ43が吊り材42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、図12(b)に示すように、ストランドジャッキ43が吊り材42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。 In the above elevating device 22, when the strand jack 43 pulls the suspension member 42, the crane installation floor 20 rises with respect to the support pillar 11A, as shown in FIG. 12A. On the other hand, as shown in FIG. 12B, when the strand jack 43 sends out the suspension member 42, the crane installation floor 20 descends with respect to the support pillar 11A.

図13(a)は、ストランドジャッキ43の先端面(上端面)の平面図である。図13(b)は、滑車64の平面図である。
ストランドジャッキ43は、先端面が円形であり、例えば7本のストランドを引っ張ることが可能である。本実施形態では、図13(a)に示すように、7本のストランドのうち、ストランドジャッキ43の先端面の中心を通る一直線上に並ぶ3本のストランドのみを、吊り材42として用いる。
滑車64は、直径が同一のプーリ65を3枚重ねて構成されており、ストランドジャッキ43の3本のストランドとしての吊り材42が巻かれている。
FIG. 13A is a plan view of the tip end surface (upper end surface) of the strand jack 43. FIG. 13B is a plan view of the pulley 64.
The strand jack 43 has a circular tip surface, and can pull, for example, seven strands. In the present embodiment, as shown in FIG. 13A, of the seven strands, only three strands aligned in a straight line passing through the center of the tip surface of the strand jack 43 are used as the suspending member 42.
The pulley 64 is formed by stacking three pulleys 65 having the same diameter, and a suspension member 42 as three strands of the strand jack 43 is wound around the pulley 64.

図14は、ボックス部材60の異なる2方向の縦断面図である。図15は、仮固定ジャッキ62の動作を示す図である。
仮固定ジャッキ62は、ねじ66を回転させることで伸縮し、水平方向の長さ寸法lを変更可能となっている。この仮固定ジャッキ62では、ねじ66は、仮固定ジャッキ62の長さ方向の中央に位置する構造である。
FIG. 14 is a vertical cross-sectional view of the box member 60 in two different directions. FIG. 15 is a diagram showing the operation of the temporary fixing jack 62.
The temporary fixing jack 62 expands and contracts by rotating the screw 66, and the length dimension l 1 in the horizontal direction can be changed. In the temporary fixing jack 62, the screw 66 has a structure located at the center of the temporary fixing jack 62 in the length direction.

ボックス部材60の側面には、水平方向に延びる長孔67が形成されており、ねじ66はこの長孔67を貫通して外部に突出している。上述のように、ねじ66が仮固定ジャッキ62の長さ方向中央に位置するため、長孔67を水平方向に延びる形状とすることで、仮固定ジャッキ62の長さ寸法の変化に対応可能となっている。 An elongated hole 67 extending in the horizontal direction is formed on the side surface of the box member 60, and the screw 66 penetrates the elongated hole 67 and projects to the outside. As described above, since the screw 66 is located at the center of the temporary fixing jack 62 in the length direction, it is possible to respond to a change in the length dimension of the temporary fixing jack 62 by forming the elongated hole 67 in the horizontal direction. It has become.

ねじ66の先端には、円盤状のハンドル68が設けられている。このハンドル68には、チェーン69が巻かれて下方に垂れ下がっている。よって、ボックス部材60の下方からチェーン69を引っ張ってねじ66を回転させることで、仮固定ジャッキ62の長さ寸法を適宜調整できる。これにより、仮固定ジャッキ62が支持柱11Aのフランジの外面に当接し、ボックス部材60を支持柱11Aに仮固定できるようになっている。 A disk-shaped handle 68 is provided at the tip of the screw 66. A chain 69 is wound around the handle 68 and hangs downward. Therefore, by pulling the chain 69 from below the box member 60 and rotating the screw 66, the length dimension of the temporary fixing jack 62 can be appropriately adjusted. As a result, the temporary fixing jack 62 comes into contact with the outer surface of the flange of the support pillar 11A, and the box member 60 can be temporarily fixed to the support pillar 11A.

図16および図17は、係止装置23の動作を示す模式図である。
図7〜図10にも示すように、係止装置23は、一対のかんぬき梁70と、この一対のかんぬき梁70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71A、71Bと、を備える。
支持柱11Aの互いに背中合わせの側面には、一対の継手部14が側方に延びており、係止装置23は、この一対の継手部14の上面に一対のかんぬき梁70を載せて係止させる。
16 and 17 are schematic views showing the operation of the locking device 23.
As shown in FIGS. 7 to 10, the locking device 23 is a pair of opening / closing mechanisms 71A and 71B that move substantially horizontally in the direction of approaching or separating the pair of piercing beams 70 and the pair of piercing beams 70 from each other. And.
A pair of joint portions 14 extend sideways on the back-to-back side surfaces of the support columns 11A, and the locking device 23 places a pair of through beams 70 on the upper surfaces of the pair of joint portions 14 to lock the support columns 11A. ..

開閉機構71Aは、基部50の一方の梁部材53B上に設けられており、一対のかんぬき梁70の一端側を下から支持する一対の支持部72と、この一対の支持部72を略水平に移動する移動機構73と、を備える。 The opening / closing mechanism 71A is provided on one beam member 53B of the base 50, and the pair of support portions 72 that support one end side of the pair of piercing beams 70 from below and the pair of support portions 72 are substantially horizontal. A moving mechanism 73 for moving is provided.

支持部72は、かんぬき梁70の底面を下から支持する水平片721と、この水平片721の両端から鉛直方向に延びてかんぬき梁70の両側面に当接する一対の鉛直片722と、を備える。
図16および図17に示すように、支持部72の水平片721の上面から梁部材53Bの下面までの距離をhは、かんぬき梁70の高さ寸法hよりも僅かに高くなっている。
The support portion 72 includes a horizontal piece 721 that supports the bottom surface of the punching beam 70 from below, and a pair of vertical pieces 722 that extend vertically from both ends of the horizontal piece 721 and abut on both side surfaces of the punching beam 70. ..
As shown in FIGS. 16 and 17, the distance h 1 from the upper surface of the horizontal piece 721 of the support portion 72 to the lower surface of the beam member 53B is slightly higher than the height dimension h 2 of the beam 70. ..

移動機構73は、モータ74と、モータ74から水平方向に離れた位置に回転自在に設けられた滑車75と、これらモータ74と滑車75との間に巻き回されたチェーン76と、を備える。一方の支持部72は、チェーン76の上側の部分に固定され、他方の支持部72は、チェーン76の下側の部分に固定されている。また、ねじ77を回転させることで、滑車75がモータ74に対して接近あるいは離隔し、これにより、チェーン76の張力を調整可能となっている。 The moving mechanism 73 includes a motor 74, a pulley 75 rotatably provided at a position horizontally separated from the motor 74, and a chain 76 wound between the motor 74 and the pulley 75. One support portion 72 is fixed to the upper portion of the chain 76, and the other support portion 72 is fixed to the lower portion of the chain 76. Further, by rotating the screw 77, the pulley 75 approaches or separates from the motor 74, whereby the tension of the chain 76 can be adjusted.

開閉機構71Bは、基部50の他方の梁部材53B上に設けられており、一対のかんぬき梁70の他端側を下から支持する一対の支持部72と、この一対の支持部72を略水平に移動する移動機構73と、を備える。これら開閉機構71Bの支持部72および移動機構73は、開閉機構71Aの支持部72および移動機構73と同様の構成である。 The opening / closing mechanism 71B is provided on the other beam member 53B of the base 50, and the pair of support portions 72 that support the other end side of the pair of piercing beams 70 from below and the pair of support portions 72 are substantially horizontal. It is provided with a moving mechanism 73 that moves to. The support portion 72 and the moving mechanism 73 of the opening / closing mechanism 71B have the same configuration as the supporting portion 72 and the moving mechanism 73 of the opening / closing mechanism 71A.

係止装置23では、以下のようにして、クレーン設置床20を支持柱11Aから側方に突出した継手部14の上面に係止する。
すなわち、開閉機構71A、71Bのモータ74を駆動して、チェーン76を図16中矢印方向に回転させることで、支持部72に支持された一対のかんぬき梁70同士を接近させ、一対のかんぬき梁70を支持柱11Aの継手部14の上に位置させる。
In the locking device 23, the crane installation floor 20 is locked to the upper surface of the joint portion 14 projecting laterally from the support column 11A as follows.
That is, by driving the motors 74 of the opening / closing mechanisms 71A and 71B and rotating the chain 76 in the direction of the arrow in FIG. 70 is positioned on the joint portion 14 of the support column 11A.

この状態で、昇降装置22によりクレーン設置床20を下降させると、かんぬき梁70が支持柱11Aの継手部14の上面に係止し、このかんぬき梁70にクレーン設置床20の梁部材53Aが係止する(図7および図8参照)。これにより、クレーン設置床20が支持柱11Aに支持される。
このとき、かんぬき梁70は支持部72に対して上方に相対移動するが、支持部72の一対の鉛直片がかんぬき梁70の両側面に当接しているので、かんぬき梁70が上方に移動しても、このかんぬき梁70の脱落を防止できる。
In this state, when the crane installation floor 20 is lowered by the lifting device 22, the crane beam 70 is locked to the upper surface of the joint portion 14 of the support column 11A, and the beam member 53A of the crane installation floor 20 is engaged with the crane beam 70. Stop (see FIGS. 7 and 8). As a result, the crane installation floor 20 is supported by the support pillar 11A.
At this time, the perforated beam 70 moves upward relative to the support portion 72, but since the pair of vertical pieces of the support portion 72 are in contact with both side surfaces of the perforated beam 70, the perforated beam 70 moves upward. However, it is possible to prevent the plumb bob beam 70 from falling off.

一方、係止装置23では、以下のようにして、クレーン設置床20の継手部14の係止状態を解除する。
すなわち、昇降装置22によりクレーン設置床20を少し上昇させて、かんぬき梁70を支持部72に対して下方に相対移動させ、支持部72の水平片721の上に載せる。これにより、かんぬき梁70の上面と梁部材53Bの下面との間には、隙間が形成される。
この状態で、開閉機構71A、71Bのモータ74を駆動して、チェーン76を図17中矢印方向に回転させることで、支持部72に支持された一対のかんぬき梁70同士を離間させる。一対のかんぬき梁70を支持柱11Aの継手部14の上から退避させる。これにより、かんぬき梁70と梁部材53Bとが接触することなく、かんぬき梁70を円滑に水平移動できる。
On the other hand, in the locking device 23, the locked state of the joint portion 14 of the crane installation floor 20 is released as follows.
That is, the crane installation floor 20 is slightly raised by the elevating device 22, the beam 70 is moved downward relative to the support portion 72, and is placed on the horizontal piece 721 of the support portion 72. As a result, a gap is formed between the upper surface of the beam 70 and the lower surface of the beam member 53B.
In this state, the motors 74 of the opening / closing mechanisms 71A and 71B are driven to rotate the chain 76 in the direction of the arrow in FIG. 17, so that the pair of through-beams 70 supported by the support portion 72 are separated from each other. The pair of piercing beams 70 are retracted from above the joint portion 14 of the support column 11A. As a result, the beam 70 can be smoothly moved horizontally without the beam 70 and the beam member 53B coming into contact with each other.

図18は、振れ止め装置24の平面図である。図19は、振れ止め装置24の拡大平断面図である。
振れ止め装置24は、クレーン設置床20に支持されて支持柱11Aの側面のフランジ面に当接して押さえるものである。
この振れ止め装置24は、クレーン設置床20の梁部材53A間にX方向に水平移動可能に架設されてY方向に延びる一対の第1支持部材80と、各第1支持部材80に一対ずつY方向に水平移動可能に設けられた第2支持部材81と、各第2支持部材81に螺合されて第2支持部材からのY方向の突出寸法を調整可能なボルト82と、各第2支持部材81に設けられて表面が円滑な滑り材83と、を備える。
FIG. 18 is a plan view of the steady rest device 24. FIG. 19 is an enlarged plan sectional view of the steady rest device 24.
The steady rest device 24 is supported by the crane installation floor 20 and abuts on the flange surface on the side surface of the support pillar 11A to hold it down.
The steady rest device 24 is erected between the beam members 53A of the crane installation floor 20 so as to be horizontally movable in the X direction and extends in the Y direction, and a pair of first support members 80 and a pair of Y on each of the first support members 80. A second support member 81 provided so as to be horizontally movable in the direction, a bolt 82 screwed into each second support member 81 to adjust the protrusion dimension in the Y direction from the second support member, and each second support. A sliding member 83 provided on the member 81 and having a smooth surface is provided.

第1支持部材80は、一対の梁部材53A間に支持柱11AをX方向から挟んで架設されている。この第1支持部材80の両端側は、梁部材53Aの挿通孔54に挿通され、複数のボルト挿通孔55に選択的にボルト固定されている。これにより、第1支持部材80を梁部材53AのX方向の任意の位置に仮固定可能となっている。 The first support member 80 is erected with the support column 11A sandwiched between the pair of beam members 53A from the X direction. Both ends of the first support member 80 are inserted into the insertion holes 54 of the beam member 53A, and are selectively bolted to the plurality of bolt insertion holes 55. As a result, the first support member 80 can be temporarily fixed at an arbitrary position in the X direction of the beam member 53A.

第2支持部材81は、各第1支持部材80に支持柱11AをY方向から挟んだ位置に設けられている。第1支持部材80には、複数のボルト挿通孔84が第2支持部材81の長さ方向に並んで形成されている。この第2支持部材81は、複数のボルト挿通孔84に選択的にボルト固定されている。これにより、第2支持部材81を第1支持部材80のY方向の任意の位置に仮固定可能となっている。 The second support member 81 is provided at a position where the support pillar 11A is sandwiched between the first support members 80 from the Y direction. The first support member 80 is formed with a plurality of bolt insertion holes 84 arranged side by side in the length direction of the second support member 81. The second support member 81 is selectively bolted to a plurality of bolt insertion holes 84. As a result, the second support member 81 can be temporarily fixed at an arbitrary position in the Y direction of the first support member 80.

滑り材83は、支持柱11Aのフランジの端縁の近傍に位置している。クレーン設置床20を下降させる際に、この滑り材83が支持柱11Aに摺動することで、クレーン設置床20の円滑な昇降を確保する。 The sliding member 83 is located near the edge of the flange of the support column 11A. When the crane installation floor 20 is lowered, the sliding member 83 slides on the support pillar 11A to ensure smooth ascent and descent of the crane installation floor 20.

振れ止め装置24では、ボルト82を回転させて前進させ、このボルト82の頭部を支持柱11Aのフランジ面に当接させることにより、クレーン設置床20のY方向の振れ止めを行う。一方、ボルト82を回転させて後退させることで、クレーン設置床20のY方向の振れ止めを解除できる。
また、図19に示すように、滑り材83と支持柱11Aのフランジの端縁との間にくさび85を打ち込むことで、クレーン設置床20のX方向の振れ止めを行う。一方、くさび85を取り外すことで、クレーン設置床20のX方向の振れ止めを解除できる。
In the steady rest device 24, the bolt 82 is rotated to move forward, and the head of the bolt 82 is brought into contact with the flange surface of the support pillar 11A to prevent the crane installation floor 20 from being steady in the Y direction. On the other hand, by rotating the bolt 82 to retract it, the steady rest of the crane installation floor 20 in the Y direction can be released.
Further, as shown in FIG. 19, a wedge 85 is driven between the sliding member 83 and the edge of the flange of the support column 11A to prevent the crane installation floor 20 from being swayed in the X direction. On the other hand, by removing the wedge 85, the steady rest of the crane installation floor 20 in the X direction can be released.

以下、既存建物1を解体する手順について、図20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の屋上階に解体システム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、振れ止め装置24を構築する。
Hereinafter, the procedure for dismantling the existing building 1 will be described with reference to the flowchart of FIG.
In step S1, as shown in FIG. 1, the demolition system 2 is constructed on the rooftop floor of the existing building 1.
That is, a crane installation floor 20, a crane 21, an elevating device 22, a locking device 23, and a steady rest device 24 are constructed on the rooftop floor of the existing building 1.

ここで、クレーン設置床20を構築する部分について、所定の既存柱11の上に仮設柱15を取り付けて、この既存柱11のうち支持柱11Aについて、昇降装置22の反力部材41を仮設柱15の頂部に取り付ける。このとき、反力部材41の仮固定ジャッキ62を駆動して、反力部材41を支持柱11Aに仮固定する。
また、係止装置23のかんぬき梁70を、仮設ピース16を介して、屋上階床レベルの支持柱11Aの継手部14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。
また、振れ止め装置24のボルト82でクレーン設置床20のY方向の振れ止めを行うとともに、振れ止め装置24のくさび85を取り付けて、クレーン設置床20のX方向の振れ止めを行う。
Here, for the portion where the crane installation floor 20 is constructed, the temporary pillar 15 is mounted on the predetermined existing pillar 11, and the reaction force member 41 of the lifting device 22 is attached to the support pillar 11A of the existing pillar 11 as a temporary pillar. Attach to the top of 15. At this time, the temporary fixing jack 62 of the reaction force member 41 is driven to temporarily fix the reaction force member 41 to the support column 11A.
Further, the crane installation floor 20 is temporarily supported on the support pillar 11A by mounting the crane beam 70 of the locking device 23 on the joint portion 14 of the support pillar 11A at the rooftop floor level via the temporary piece 16. Let me.
Further, the bolt 82 of the steady rest device 24 is used to hold the crane installation floor 20 in the Y direction, and the wedge 85 of the steady rest device 24 is attached to hold the crane installation floor 20 in the X direction.

ステップS2では、図21に示すように、クレーン21を用いて、支持柱11Aおよびこの支持柱11Aに隣接する既存柱11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S9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. 21, the existing building 1 is disassembled into two layers from the rooftop floor by using the crane 21 and leaving the support pillar 11A and the existing pillar 11 adjacent to the support pillar 11A. At this time, the joint portion 14 of the support column 11A is left.
When step S2 is repeated in step S9 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。
すなわち、支持柱11Aによるクレーン設置床20の振れ止めを解除する。具体的には、振れ止め装置24のボルト82を後退させるとともに、振れ止め装置24のくさび85を取り外す。
次に、ストランドジャッキ43により吊り材42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71A、71Bを駆動して、一対のかんぬき梁70を支持柱11Aの継手部14の上から退避させる。
In step S3, the temporary support of the crane installation floor 20 by the support pillar 11A is released.
That is, the steady rest of the crane installation floor 20 by the support pillar 11A is released. Specifically, the bolt 82 of the steady rest device 24 is retracted, and the wedge 85 of the steady rest device 24 is removed.
Next, tension is introduced into the suspension material 42 by the strand jack 43, and the crane installation floor 20 is lifted slightly upward to cut the ground. In this state, the opening / closing mechanisms 71A and 71B of the locking device 23 are driven to retract the pair of punching beams 70 from above the joint portion 14 of the support column 11A.

ステップS4では、図22に示すように、ストランドジャッキ43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、振れ止め装置24の滑り材83でクレーン設置床20の下降をガイドする。 In step S4, as shown in FIG. 22, the strand jack 43 is driven to lower the crane installation floor 20 by one layer along the support pillar 11A. At this time, the sliding member 83 of the steady rest device 24 guides the descent of the crane installation floor 20.

ステップS5では、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71A、71Bを駆動して、一対のかんぬき梁70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43によりクレーン設置床20を下降させて、かんぬき梁70を支持柱11Aの継手部14の上面に係止させる。次に、振れ止め装置24のボルト82でクレーン設置床20のY方向の振れ止めを行うとともに、振れ止め装置24のくさび85を取り付けて、クレーン設置床20のX方向の振れ止めを行う。
In step S5, the crane installation floor 20 is temporarily supported by the support pillar 11A again.
That is, the opening / closing mechanisms 71A and 71B of the locking device 23 are driven to position the pair of punching beams 70 on the joint portion 14 of the support column 11A. Next, the crane installation floor 20 is lowered by the strand jack 43, and the piercing beam 70 is locked to the upper surface of the joint portion 14 of the support column 11A. Next, the bolt 82 of the steady rest device 24 is used to hold the crane installation floor 20 in the Y direction, and the wedge 85 of the steady rest device 24 is attached to hold the crane installation floor 20 in the X direction.

ステップS6では、図23に示すように、既存柱11の上部を切断して撤去し、昇降装置22の反力部材41を支持柱11Aから取り外して、他の既存柱11の頂部に仮置きする。
すなわち、クレーン設置床20上からチェーン69を引っ張ることで、反力部材41の仮固定ジャッキ62を駆動して、反力部材41の仮固定を解除する。次に、反力部材41をクレーン21で吊り上げて、この支持柱11Aに隣接する既存柱11の頂部に仮置きする。
ステップS7は、支持柱11Aの上部を切断して撤去する。このようにして、支持柱11Aを含む全ての既存柱11の上部を撤去する。
In step S6, as shown in FIG. 23, the upper part of the existing pillar 11 is cut and removed, the reaction force member 41 of the elevating device 22 is removed from the support pillar 11A, and the existing pillar 11 is temporarily placed on the top of the other existing pillar 11. ..
That is, by pulling the chain 69 from the crane installation floor 20, the temporary fixing jack 62 of the reaction force member 41 is driven to release the temporary fixing of the reaction force member 41. Next, the reaction force member 41 is lifted by the crane 21 and temporarily placed on the top of the existing pillar 11 adjacent to the support pillar 11A.
In step S7, the upper part of the support column 11A is cut and removed. In this way, the upper part of all the existing pillars 11 including the support pillar 11A is removed.

ステップS8は、図24に示すように、他の既存柱11の頂部に仮置きした反力部材41を、支持柱11Aの頂部に再度仮固定する。
すなわち、仮置きした反力部材41をクレーン21で吊り上げて、支持柱11Aの頂部に再度配置する。次に、クレーン設置床20上からチェーン69を引っ張ることで、反力部材41の仮固定ジャッキ62を駆動して、反力部材41を支持柱11Aに仮固定する。
ステップS9は、ステップS2からステップS8までを繰り返す。
In step S8, as shown in FIG. 24, the reaction force member 41 temporarily placed on the top of the other existing pillar 11 is temporarily fixed to the top of the support pillar 11A again.
That is, the temporarily placed reaction force member 41 is lifted by the crane 21 and rearranged on the top of the support column 11A. Next, by pulling the chain 69 from above the crane installation floor 20, the temporary fixing jack 62 of the reaction force member 41 is driven to temporarily fix the reaction force member 41 to the support pillar 11A.
Step S9 repeats steps S2 to S8.

本実施形態によれば、以下のような効果がある。
(1)解体システム2を、支持柱11A、クレーン設置床20、クレーン21、昇降装置22、および係止装置23を含んで構成し、クレーン21で既存建物1を解体しながら、昇降装置22によりクレーン設置床20を支持柱11Aに沿って下降させた。よって、従来のようにクレーン設置床に既存床の一部を利用しないので、大掛かりな補強が不要となり、施工費用を削減できる。
また、昇降装置22のフレーム40同士を梁部材30で連結し、この梁部材30の上に板状の床部材31を設けてクレーン設置床20を構成した。よって、梁部材30のサイズや長さを適宜選択することで、クレーン設置床20を任意の大きさで容易に構築できる。また、梁部材30を昇降装置22のフレーム40から取り外すことで、昇降装置22を容易に転用できるので、施工コストを低減できる。
According to this embodiment, there are the following effects.
(1) The dismantling system 2 includes a support column 11A, a crane installation floor 20, a crane 21, an elevating device 22, and a locking device 23, and the elevating device 22 dismantles the existing building 1 with the crane 21. The crane installation floor 20 was lowered along the support column 11A. Therefore, unlike the conventional case, a part of the existing floor is not used for the crane installation floor, so that large-scale reinforcement is not required and the construction cost can be reduced.
Further, the frames 40 of the elevating device 22 are connected to each other by a beam member 30, and a plate-shaped floor member 31 is provided on the beam member 30 to form a crane installation floor 20. Therefore, the crane installation floor 20 can be easily constructed with an arbitrary size by appropriately selecting the size and length of the beam member 30. Further, by removing the beam member 30 from the frame 40 of the elevating device 22, the elevating device 22 can be easily diverted, so that the construction cost can be reduced.

(2)昇降装置22を、フレーム40、反力部材41、吊り材42、およびストランドジャッキ43を含んで構成した。さらに、吊り材42を反力部材41の滑車64に巻いて、この吊り材42の一端側をフレーム40の吊り材支持部52に連結し、吊り材42の他端側をストランドジャッキ43に連結した。よって、ストランドジャッキ43により吊り材42を引っ張ることで、クレーン設置床20が支持柱11Aに対して上昇し、ストランドジャッキ43により吊り材42を送り出すことで、クレーン設置床20が支持柱11Aに対して下降する。したがって、反力部材41の滑車64を利用することで、単一のストランドジャッキ43でクレーン設置床20を昇降できるので、施工コストを削減できる。 (2) The lifting device 22 includes a frame 40, a reaction force member 41, a suspending member 42, and a strand jack 43. Further, the suspension material 42 is wound around the pulley 64 of the reaction force member 41, one end side of the suspension material 42 is connected to the suspension material support portion 52 of the frame 40, and the other end side of the suspension material 42 is connected to the strand jack 43. bottom. Therefore, by pulling the suspension material 42 by the strand jack 43, the crane installation floor 20 rises with respect to the support pillar 11A, and by sending out the suspension material 42 by the strand jack 43, the crane installation floor 20 with respect to the support pillar 11A. And descend. Therefore, by using the pulley 64 of the reaction force member 41, the crane installation floor 20 can be raised and lowered by a single strand jack 43, so that the construction cost can be reduced.

(3)吊り材42を、ストランドジャッキ43の7本のストランドのうち一直線上に並ぶ3本のストランドで構成し、滑車64を、直径が同一のプーリ65を3枚重ねて構成した。よって、同一形状のプーリ65を使用できるので、滑車64の製作が容易となる。 (3) The suspension member 42 was composed of three strands arranged in a straight line among the seven strands of the strand jack 43, and the pulley 64 was constructed by stacking three pulleys 65 having the same diameter. Therefore, since the pulley 65 having the same shape can be used, the pulley 64 can be easily manufactured.

(4)反力部材41を、ボックス部材60、反力梁61、および仮固定ジャッキ62を含んで構成したので、ボックス部材60を支持柱11Aに被せて、このボックス部材60内部の仮固定ジャッキ62を伸縮させて支持柱11Aの側面に当接させることで、反力部材41を容易に支持柱11Aに仮固定できる。 (4) Since the reaction force member 41 is configured to include the box member 60, the reaction force beam 61, and the temporary fixing jack 62, the box member 60 is put on the support column 11A and the temporary fixing jack inside the box member 60 is covered. By expanding and contracting the 62 and bringing it into contact with the side surface of the support column 11A, the reaction force member 41 can be easily temporarily fixed to the support column 11A.

(5)ボックス部材60の側面に、仮固定ジャッキ62のねじ66が貫通する長孔67を形成した。よって、ねじ66を回転させて仮固定ジャッキ62の長さ寸法を変更した際に、ねじ66の位置が多少動いても、このねじ66が長孔67に引っ掛かることはない。
また、ねじ66の先端のハンドル68にチェーン69を巻き回したので、チェーン69を下方から引っ張るだけで、容易に仮固定ジャッキ62を操作できる。
(5) An elongated hole 67 through which the screw 66 of the temporary fixing jack 62 penetrates is formed on the side surface of the box member 60. Therefore, when the screw 66 is rotated to change the length dimension of the temporary fixing jack 62, the screw 66 does not get caught in the elongated hole 67 even if the position of the screw 66 moves slightly.
Further, since the chain 69 is wound around the handle 68 at the tip of the screw 66, the temporary fixing jack 62 can be easily operated by simply pulling the chain 69 from below.

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(既存構造物) 2…解体システム 3…コア部
11…既存柱 11A…支持柱 12…既存梁 13…既存床
14…支持柱の継手部 15…仮設柱 16…仮設ピース
20…クレーン設置床 21…クレーン 22…昇降装置 23…係止装置
24…振れ止め装置
30…梁部材 31…床部材 32…走行レール 33…走行台車
34…クレーン本体 35…ジブ 36…巻上装置
40…フレーム 41…反力部材 42…吊り材
43…ストランドジャッキ(昇降ジャッキ)
50…基部 51…ジャッキ支持部 52…吊り材支持部 53A、53B…梁部材
54…挿通孔 55…ボルト挿通孔
60…ボックス部材 61…反力梁 62…仮固定ジャッキ 63…水平部材
64…滑車 65…プーリ 66…ねじ 67…長孔 68…ハンドル
69…チェーン
70…かんぬき梁 71A、71B…開閉機構 72…支持部 73…移動機構
74…モータ 75…滑車 76…チェーン 721…水平片 722…鉛直片
80…第1支持部材 81…第2支持部材 82…ボルト 83…滑り材
84…ボルト挿通孔 85…くさび
1 ... Existing building (existing structure) 2 ... Dismantling system 3 ... Core part 11 ... Existing pillar 11A ... Support pillar 12 ... Existing beam 13 ... Existing floor 14 ... Support pillar joint part 15 ... Temporary pillar 16 ... Temporary piece 20 ... Crane installation floor 21 ... Crane 22 ... Lifting device 23 ... Locking device 24 ... Steering device 30 ... Beam member 31 ... Floor member 32 ... Travel rail 33 ... Traveling carriage 34 ... Crane body 35 ... Jib 36 ... Hoisting device 40 ... Frame 41 ... Reaction force member 42 ... Hanging material 43 ... Strand jack (elevating jack)
50 ... Base 51 ... Jack support 52 ... Suspension support 53A, 53B ... Beam member 54 ... Insertion hole 55 ... Bolt insertion hole 60 ... Box member 61 ... Reaction beam 62 ... Temporary fixing jack 63 ... Horizontal member 64 ... Pulley 65 ... Pulley 66 ... Screw 67 ... Long hole 68 ... Handle 69 ... Chain 70 ... Jack beam 71A, 71B ... Opening and closing mechanism 72 ... Support 73 ... Moving mechanism 74 ... Motor 75 ... Pulley 76 ... Chain 721 ... Horizontal piece 722 ... Vertical Piece 80 ... 1st support member 81 ... 2nd support member 82 ... Bolt 83 ... Sliding material 84 ... Bolt insertion hole 85 ... Wedge

Claims (2)

既存構造物を解体する解体システムであって、
既存構造物の所定のフロアの上に構築されたクレーン設置床と、当該クレーン設置床を支持する既存柱である支持柱と、前記クレーン設置床上に設置されたクレーンと、前記クレーン設置床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、前記支持柱を囲んで設けられた矩形枠状のフレームを備え、
前記クレーン設置床は、前記昇降装置のフレーム同士を連結する梁部材と、当該梁部材の上に設けられた板状の床部材と、を備え
前記昇降装置は、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フレームに連結された吊り材と、前記フレームに設けられて前記吊り材の他端側を引っ張る昇降ジャッキと、をさらに備え、
前記昇降ジャッキは、複数本のストランドを引っ張ることが可能なストランドジャッキであり、
前記吊り材は、当該ストランドジャッキの複数本のストランドのうち一直線上に並ぶ所定の本数のストランドで構成され、
前記滑車は、直径が同一のプーリを前記所定の枚数だけ重ねて構成されていることを特徴とする既存構造物の解体システム。
A dismantling system that dismantles existing structures
The crane installation floor constructed on a predetermined floor of the existing structure, the support pillars which are the existing pillars supporting the crane installation floor, the crane installed on the crane installation floor, and the crane installation floor are described as described above. Equipped with an elevating device that lowers along the support pillar,
The elevating device includes a rectangular frame-shaped frame provided so as to surround the support pillar.
The crane installation floor includes a beam member that connects the frames of the elevating device to each other, and a plate-shaped floor member provided on the beam member .
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 hanging member whose side is connected to the frame and an elevating jack provided on the frame and pulling the other end side of the hanging member are further provided.
The elevating jack is a strand jack capable of pulling a plurality of strands.
The suspending material is composed of a predetermined number of strands arranged in a straight line among a plurality of strands of the strand jack.
The pulley is a dismantling system for an existing structure, characterized in that a predetermined number of pulleys having the same diameter are stacked.
既存構造物を解体する解体システムであって、
既存構造物の所定のフロアの上に構築されたクレーン設置床と、当該クレーン設置床を支持する既存柱である支持柱と、前記クレーン設置床上に設置されたクレーンと、前記クレーン設置床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、前記支持柱を囲んで設けられた矩形枠状のフレームを備え、
前記クレーン設置床は、前記昇降装置のフレーム同士を連結する梁部材と、当該梁部材の上に設けられた板状の床部材と、を備え
前記昇降装置は、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フレームに連結された吊り材と、前記フレームに設けられて前記吊り材の他端側を引っ張る昇降ジャッキと、をさらに備え、
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ジャッキと、を備え、
前記仮固定ジャッキは、ねじを回転させることで長さ寸法を変更可能であり、
前記ボックス部材の側面には、当該ねじが貫通する長孔が形成されており、
前記ねじの先端には、チェーンが巻き回されていることを特徴とする既存構造物の解体システム。
A dismantling system that dismantles existing structures
The crane installation floor constructed on a predetermined floor of the existing structure, the support pillars which are the existing pillars supporting the crane installation floor, the crane installed on the crane installation floor, and the crane installation floor are described as described above. Equipped with an elevating device that lowers along the support pillar,
The elevating device includes a rectangular frame-shaped frame provided so as to surround the support pillar.
The crane installation floor includes a beam member that connects the frames of the elevating device to each other, and a plate-shaped floor member provided on the beam member .
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 hanging member whose side is connected to the frame and an elevating jack provided on the frame and pulling the other end side of the hanging member are further provided.
The reaction force member includes a rectangular tubular box member that is covered on the upper end of the support column and the upper end is closed.
A reaction beam provided on the box member and extending substantially horizontally,
A temporary fixing jack provided on the inner wall surface of the box member and capable of contacting the side surface of the support column is provided.
The length of the temporary fixing jack can be changed by rotating the screw.
An elongated hole through which the screw penetrates is formed on the side surface of the box member.
A dismantling system for existing structures, characterized in that a chain is wound around the tip of the screw.
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