JP6061339B2 - Structure reconstruction method and structure reconstruction system - Google Patents

Structure reconstruction method and structure reconstruction system Download PDF

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JP6061339B2
JP6061339B2 JP2013142208A JP2013142208A JP6061339B2 JP 6061339 B2 JP6061339 B2 JP 6061339B2 JP 2013142208 A JP2013142208 A JP 2013142208A JP 2013142208 A JP2013142208 A JP 2013142208A JP 6061339 B2 JP6061339 B2 JP 6061339B2
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JP2015014161A (en
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清志 矢島
清志 矢島
英樹 市原
英樹 市原
実 佐々
実 佐々
誠 萱嶋
誠 萱嶋
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Taisei Corp
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本発明は、構造物改築方法および構造物改築システムに関する。詳しくは、既存構造物を改築する構造物改築方法および構造物改築システムに関する。   The present invention relates to a structure reconstruction method and a structure reconstruction system. Specifically, the present invention relates to a structure reconstructing method and a structure reconstructing system for reconstructing an existing structure.

従来より、高層建物の既存外壁を解体して、新たに外壁パネルを取り付ける場合がある。この場合、高層建物に枠組み足場を設置することが困難であるうえに、外壁パネルはかなりの重量物であるため、例えば、以下のような施工システムが提案されている(特許文献1参照)。   Conventionally, there is a case where an existing outer wall of a high-rise building is dismantled and a new outer wall panel is attached. In this case, since it is difficult to install a framework scaffold in a high-rise building and the outer wall panel is quite heavy, for example, the following construction system has been proposed (see Patent Document 1).

すなわち、施工システムは、建物の屋上階に設けられた支持フレームと、支持フレームに支持されて外壁面の所定位置まで作業員を搬送するゴンドラ機構と、支持フレームに支持されて外壁面の所定位置まで外壁パネルを搬送する走行式搬送機構と、支持フレームに吊り下げ支持されてゴンドラ機構および走行式搬送機構の移動範囲を覆う養生する吊り足場と、地表から建物上部に向かって外壁パネルを搬送する仮設リフトと、を備える。   That is, the construction system includes a support frame provided on the roof floor of a building, a gondola mechanism that is supported by the support frame and conveys workers to a predetermined position on the outer wall surface, and a predetermined position on the outer wall surface that is supported by the support frame. The transporting mechanism that transports the outer wall panel to the surface, the suspension scaffold that is supported by being suspended by the support frame and covers the moving range of the gondola mechanism and the traveling transport mechanism, and the outer wall panel is transported from the ground surface toward the top of the building A temporary lift.

支持フレームは、建物の屋上階に設けられて外方に張り出した複数の支持アームと、これら支持アームの先端に設けられて建物の外周に沿って延びる2条の軌条と、を備える。
ゴンドラ機構は、作業員が搭乗するゴンドラと、ワイヤを介してゴンドラを吊り下げ支持しつつ支持フレーム先端の軌条に沿って移動可能な台車と、を備える。このゴンドラ機構によれば、作業員が搭乗したゴンドラを、水平方向あるいは上下方向に移動することができる。
The support frame includes a plurality of support arms that are provided on the roof floor of the building and project outward, and two rails that are provided at the ends of the support arms and extend along the outer periphery of the building.
The gondola mechanism includes a gondola on which an operator gets on, and a cart that can move along a rail at the tip of the support frame while hanging and supporting the gondola via a wire. According to this gondola mechanism, the gondola on which the worker has boarded can be moved horizontally or vertically.

走行式搬送機構は、支持フレーム先端の軌条に沿って移動可能であり、ワイヤを介して外壁パネルを吊り下げ支持可能である。この走行式搬送機構によれば、外壁パネルを、水平方向あるいは上下方向に移動することができる。
仮設リフトは、外壁面に沿って地表から建物上部まで延びた軌条と、この軌条に沿って移動するケージと、を備えている。この仮設リフトによれば、ケージを軌条に沿って上昇させることにより、外壁パネルを地表から建物上部まで搬送できる。
The traveling type transport mechanism can move along the rails at the tip of the support frame, and can support the outer wall panel by hanging it through a wire. According to this traveling type transport mechanism, the outer wall panel can be moved horizontally or vertically.
The temporary lift includes a rail that extends from the ground surface to the top of the building along the outer wall surface, and a cage that moves along the rail. According to this temporary lift, the outer wall panel can be conveyed from the ground surface to the upper part of the building by raising the cage along the rail.

この施工システムによれば、以下の手順で外壁パネルを取り付ける。
まず、ゴンドラ機構および走行式搬送機構の作業範囲を決定し、この作業範囲を覆うように吊り足場をセットする。
次に、仮設リフトのケージに外壁パネルを載せて、その後、ケージを軌条に沿って上昇させて、外壁パネルを地表から建物上部まで搬送する。次に、仮設リフトのケージ上の外壁パネルを走行式搬送機構により吊り下げ支持させる。次に、ゴンドラ機構によりゴンドラを所定位置まで移動させるととともに、走行式搬送機構により外壁パネルを所定位置まで移動させる。次に、ゴンドラ上の作業員により、走行式搬送機構に支持された外壁パネルを所定位置に取り付ける。このような作業を繰り返すことにより、所定の作業範囲に外壁パネルを取り付ける。
According to this construction system, the outer wall panel is attached by the following procedure.
First, the work ranges of the gondola mechanism and the traveling transport mechanism are determined, and the suspension scaffold is set so as to cover the work range.
Next, the outer wall panel is placed on the cage of the temporary lift, and then the cage is raised along the rails to transport the outer wall panel from the ground surface to the upper part of the building. Next, the outer wall panel on the temporary lift cage is suspended and supported by the traveling transport mechanism. Next, the gondola is moved to a predetermined position by the gondola mechanism, and the outer wall panel is moved to the predetermined position by the traveling transport mechanism. Next, the worker on the gondola attaches the outer wall panel supported by the traveling transport mechanism to a predetermined position. By repeating such work, the outer wall panel is attached to a predetermined work range.

特開2006−348691号公報JP 2006-348691 A

しかしながら、上述のような施工システムでは、所定の作業範囲内で、既存外壁の取り外し作業および新設の外壁パネルの取り付け作業を同時に行う。したがって、作業が複雑になるので、作業効率が低下するうえに、取り外した既存外壁が新設外壁に接触して、新設外壁が損傷するおそれがあった。   However, in the construction system as described above, the existing outer wall removal work and the new outer wall panel attachment work are simultaneously performed within a predetermined work range. Therefore, the work becomes complicated, so that the work efficiency is lowered and the removed existing outer wall comes into contact with the new outer wall, and the new outer wall may be damaged.

本発明は、既存外壁を新設外壁に取り替える場合に、作業効率の低下を防止しつつ、新設外壁が損傷するのを防止できる構造物改築方法および構造物改築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 structure reconstructing method and a structure reconstructing system capable of preventing damage to a new outer wall while preventing a decrease in work efficiency when an existing outer wall is replaced with a new outer wall.

請求項1に記載の構造物改築方法は、既存構造物(例えば、後述の既存建物1)を改築する構造物改築方法であって、前記既存構造物に支持されて当該既存構造物を囲む基部(例えば、後述の基部21)、当該基部の上側に設けられて前記既存構造物の外周面を覆う上側仮設壁(例えば、後述の上側仮設壁22)、および前記基部の下側に設けられて前記既存構造物の外周面を覆う下側仮設壁(例えば、後述の下側仮設壁23)を備える仮設壁を架設する初期工程(例えば、後述のステップS1、S2)と、前記下側仮設壁で囲まれた空間(例えば、後述の解体作業スペース40)で、少なくとも既存外壁(例えば、後述の既存外壁14)を解体するとともに、前記上側仮設壁で囲まれた空間(例えば、後述の新設作業スペース50)で、少なくとも新設外壁(例えば、後述の新設外壁16)を取り付ける改築工程(例えば、後述のステップS3)と、前記仮設壁を下方に移動しながら前記改築工程を繰り返す繰り返し工程(例えば、後述のステップS4、S5)と、を備えることを特徴とする。   The structure remodeling method according to claim 1 is a structure remodeling method for remodeling an existing structure (for example, an existing building 1 described later), and is supported by the existing structure and surrounds the existing structure (For example, a base 21 which will be described later), an upper temporary wall (for example, an upper temporary wall 22 which will be described later) provided on the upper side of the base and covering the outer peripheral surface of the existing structure, and provided on the lower side of the base. An initial step (for example, steps S1 and S2 to be described later) for constructing a temporary wall including a lower temporary wall (for example, a lower temporary wall 23 to be described later) covering the outer peripheral surface of the existing structure, and the lower temporary wall In a space surrounded by (for example, a dismantling work space 40 described later), at least an existing outer wall (for example, an existing outer wall 14 described later) is disassembled, and a space surrounded by the upper temporary wall (for example, a new work described later) Space 50), small At least a remodeling step (for example, step S3 to be described later) for attaching a new outer wall (for example, a new outer wall 16 to be described later) and a repeating step (for example, step S4 to be described later) for repeating the remodeling step while moving the temporary wall downward. , S5).

この発明によれば、基部、上側仮設壁、下側仮設壁を備える仮設壁を架設する。このとき、基部により、仮設壁で囲まれた作業空間を、上下2つの作業空間、つまり、上側仮設壁で囲まれた上側の作業空間と、下側仮設壁で囲まれた下側の作業空間と、に仕切る。
次に、下側仮設壁で囲まれた空間で、少なくとも既存外壁を解体するとともに、上側仮設壁で囲まれた空間で、少なくとも新設外壁を取り付ける。そして、仮設壁を下方に移動しながら、既存外壁の解体および新設外壁の取り付けを繰り返す。
According to this invention, the temporary wall including the base, the upper temporary wall, and the lower temporary wall is constructed. At this time, the work space surrounded by the temporary wall is divided into two upper and lower work spaces, that is, the upper work space surrounded by the upper temporary wall and the lower work space surrounded by the lower temporary wall. And partition.
Next, at least the existing outer wall is disassembled in the space surrounded by the lower temporary wall, and at least the new outer wall is attached in the space surrounded by the upper temporary wall. Then, the disassembly of the existing outer wall and the attachment of the new outer wall are repeated while moving the temporary wall downward.

このように、仮設壁で囲まれた作業空間を基部で上下に仕切って、一方の作業空間つまり仮設壁で囲まれた下側の空間では、既存外壁を解体しつつ、他方の作業空間つまり仮設壁で囲まれた上側の空間では、新設外壁を新たに取り付ける。したがって、既存外壁の取り外し作業と新設外壁の取り付け作業とを異なる作業エリアで同時に行うことができ、作業効率を向上できる。また、作業者の安全性を確保できるうえに、資材や工具の飛来や落下を確実に防止できる。
また、新設外壁の取り付け作業を行う層(フロア)では、既に既存外壁の取り外し作業が完了しているので、取り外した既存外壁が新設外壁に接触して、新設外壁が損傷することはない。
In this way, the work space surrounded by the temporary wall is partitioned vertically at the base, and in the lower space surrounded by one work space, that is, the temporary wall, the existing outer wall is disassembled while the other work space, that is, the temporary In the upper space surrounded by walls, a new outer wall will be installed. Therefore, the work of removing the existing outer wall and the work of attaching the new outer wall can be performed simultaneously in different work areas, and work efficiency can be improved. In addition, the safety of the worker can be ensured, and the flying and dropping of materials and tools can be reliably prevented.
Further, in the layer (floor) on which the installation work of the new outer wall is completed, the removal work of the existing outer wall has already been completed, so the existing outer wall that has been removed does not come into contact with the new outer wall and the new outer wall is not damaged.

また、作業エリアを上側仮設壁および下側仮設壁で囲んだので、既存構造物の解体時に、粉塵が周囲に飛散するのを防止できるうえに、騒音を低減でき、さらには、解体材の落下も防止できる。よって、周辺環境に与える負荷を少なくできる。   In addition, because the work area is enclosed by the upper temporary wall and the lower temporary wall, dust can be prevented from scattering around the existing structure when it is dismantled, and noise can be reduced. Can also be prevented. Thus, the load on the surrounding environment can be reduced.

また、既存構造物の高層部を解体する場合でも、仮設壁により風の影響を受けないので、効率よく既存構造物を解体できる。   Further, even when disassembling a high-rise part of an existing structure, the existing structure can be disassembled efficiently because the temporary wall does not affect the wind.

請求項2に記載の構造物改築方法は、前記上側仮設壁および前記下側仮設壁を、それぞれ、枠組足場(例えば、後述の枠組足場24)を積層して構成することを特徴とする。   The structure reconstructing method according to claim 2 is characterized in that the upper temporary wall and the lower temporary wall are configured by laminating frame scaffolds (for example, a frame scaffold 24 described later), respectively.

この発明によれば、上側仮設壁を、枠組足場を積層して構成したので、上側仮設壁の基部からの高さを適宜調整して、新設外壁の取り付け作業の作業エリアを任意の広さに設定できる。また、下側仮設壁を、枠組足場を積層して構成したので、下側仮設壁の基部からの深さ(すなわち、基部から下側仮設壁の下端までの距離)を適宜調整して、既設壁の解体作業の作業エリアを任意の広さに設定できる。
また、枠組足場をさらに積層したり、一部の枠組足場を撤去したりすることで、仮設壁の高さ(深さ)を後から自在に調整できる。
According to the present invention, since the upper temporary wall is configured by laminating the frame scaffolding, the height of the upper temporary wall from the base is appropriately adjusted, and the work area for the installation work of the new outer wall is made arbitrarily wide. Can be set. In addition, since the lower temporary wall is configured by stacking frame scaffolds, the depth of the lower temporary wall from the base (that is, the distance from the base to the lower end of the lower temporary wall) is appropriately adjusted to The work area for wall demolition work can be set to any size.
Further, the height (depth) of the temporary wall can be freely adjusted later by further stacking the frame scaffolds or removing some of the frame scaffolds.

請求項3に記載の構造物改築システムは、既存構造物を改築する構造物改築システムであって、前記既存構造物に支持されて当該既存構造物を囲む基部、当該基部の上側に設けられて前記既存構造物の外周面を覆う上側仮設壁、および前記基部の下側に設けられて前記既存構造物の外周面を覆う下側仮設壁を有する仮設壁を備え、前記下側仮設壁で囲まれた空間内では、少なくとも既存外壁が解体され、前記上側仮設壁で囲まれた空間内では、少なくとも新設外壁が取り付けられることを特徴とする。   The structure remodeling system according to claim 3 is a structure remodeling system for remodeling an existing structure, and is provided on the upper side of the base portion that is supported by the existing structure and surrounds the existing structure. An upper temporary wall that covers the outer peripheral surface of the existing structure, and a temporary wall that is provided below the base and has a lower temporary wall that covers the outer peripheral surface of the existing structure, and is surrounded by the lower temporary wall In the space, at least the existing outer wall is disassembled, and in the space surrounded by the upper temporary wall, at least the new outer wall is attached.

この発明によれば、上述の請求項1と同様の効果がある。   According to the present invention, there is an effect similar to that of the first aspect.

請求項4に記載の構造物改築システムは、前記上側仮設壁および前記下側仮設壁は、それぞれ、枠組足場を積層して構成されることを特徴とする。   The structure reconstruction system according to a fourth aspect is characterized in that the upper temporary wall and the lower temporary wall are each configured by stacking frame scaffolds.

この発明によれば、上述の請求項2と同様の効果がある。   According to the present invention, there is an effect similar to that of the second aspect described above.

請求項5に記載の構造物改築方法は、既存構造物(例えば、後述の既存建物1)を改築する構造物改築方法であって、前記既存構造物を囲む基部(例えば、後述の基部21)で作業空間を上下に仕切って、一方の作業空間(例えば、後述の解体作業スペース40)では、当該既存構造物の外壁(例えば、後述の既存外壁14)を解体し、他方の作業空間では、当該既存構造物に新たに外壁(例えば、後述の新設外壁16)を取り付けることを特徴とする。   The structure reconstructing method according to claim 5 is a structure reconstructing method for reconstructing an existing structure (for example, an existing building 1 to be described later), and a base (for example, a base 21 to be described later) surrounding the existing structure. In one work space (for example, a dismantling work space 40 described later), the outer wall of the existing structure (for example, an existing outer wall 14 described later) is dismantled, and in the other work space, A new outer wall (for example, a new outer wall 16 described later) is attached to the existing structure.

この発明によれば、上述の請求項1と同様の効果がある。   According to the present invention, there is an effect similar to that of the first aspect.

本発明の構造物改築方法は、既存構造物を上階から下階に向かって改築する構造物改築方法であって、任意の階の少なくとも一部の躯体を残して解体する解体工程と、当該解体した階を改築する改築工程と、仮設壁が下降する下降工程を備え、前記解体工程および前記改築工程を同時期に並行して行う(例えば、後述のステップS3)ことが好ましい The structure reconstructing method of the present invention is a structure reconstructing method for reconstructing an existing structure from the upper floor toward the lower floor, wherein the dismantling step of dismantling leaving at least a part of the frame of any floor, and renovation process of renovation the floor that was disassembled, comprising a lowering step in which the temporary wall descends, perform the dismantling step and the renovation process in parallel the same time (e.g., step S3 will be described later) is preferred.

この発明によれば、上述の請求項1と同様の効果がある。   According to the present invention, there is an effect similar to that of the first aspect.

本発明によれば、仮設壁で囲まれた作業空間を基部で上下に仕切って、一方の作業空間つまり仮設壁で囲まれた下側の空間では、既存外壁を解体しつつ、他方の作業空間つまり仮設壁で囲まれた上側の空間では、新設外壁を新たに取り付ける。したがって、既存外壁の取り外し作業と新設外壁の取り付け作業とを異なる作業エリアで同時に行うことができ、作業効率を向上できる。また、作業者の安全性を確保できるうえに、資材や工具の飛来や落下を確実に防止できる。また、新設外壁の取り付け作業を行う層(フロア)では、既に既存外壁の取り外し作業が完了しているので、取り外した既存外壁が新設外壁に接触して、新設外壁が損傷することはない。また、作業エリアを上側仮設壁および下側仮設壁で囲んだので、既存構造物の解体時に、粉塵が周囲に飛散するのを防止できるうえに、騒音を低減でき、さらには、解体材の落下も防止できる。よって、周辺環境に与える負荷を少なくできる。また、既存構造物の高層部を解体する場合でも、仮設壁により風の影響を受けないので、効率よく既存構造物を解体できる。   According to the present invention, the work space surrounded by the temporary wall is divided up and down at the base, and in the lower space surrounded by one work space, that is, the temporary wall, the other outer work space is disassembled. That is, a new outer wall is newly attached in the upper space surrounded by the temporary wall. Therefore, the work of removing the existing outer wall and the work of attaching the new outer wall can be performed simultaneously in different work areas, and work efficiency can be improved. In addition, the safety of the worker can be ensured, and the flying and dropping of materials and tools can be reliably prevented. Further, in the layer (floor) on which the installation work of the new outer wall is completed, the removal work of the existing outer wall has already been completed, so the existing outer wall that has been removed does not come into contact with the new outer wall and the new outer wall is not damaged. In addition, because the work area is enclosed by the upper temporary wall and the lower temporary wall, dust can be prevented from scattering around the existing structure when it is dismantled, and noise can be reduced. Can also be prevented. Thus, the load on the surrounding environment can be reduced. Further, even when disassembling a high-rise part of an existing structure, the existing structure can be disassembled efficiently because the temporary wall does not affect the wind.

本発明の一実施形態に係る構造物改築方法が適用される既存構造物の断面図である。It is sectional drawing of the existing structure to which the structure reconstruction method which concerns on one Embodiment of this invention is applied. 前記実施形態に係る構造物改築方法により既存構造物を改築する手順のフローチャートである。It is a flowchart of the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法により既存構造物を改築する手順を説明するための図(その1)である。It is FIG. (1) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法の仮設壁を架設する手順を説明するための図である。It is a figure for demonstrating the procedure which constructs the temporary wall of the structure reconstruction method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法の仮設壁の基部の拡大断面図である。It is an expanded sectional view of the base part of the temporary wall of the structure reconstruction method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法により既存構造物を改築する手順を説明するための図(その2)である。It is FIG. (2) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法により既存構造物を改築する手順を説明するための図(その3)である。It is FIG. (3) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法により既存構造物を改築する手順を説明するための図(その4)である。It is FIG. (4) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. 前記実施形態に係る構造物改築方法により既存構造物を改築する手順を説明するための図(その5)である。It is FIG. (5) for demonstrating the procedure which rebuilds an existing structure with the structure rebuilding method 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構造物改築方法が適用される既存構造物としての既存建物1の断面図である。
既存建物1は、m(mは自然数)階建ての高層建物である。この既存建物1は、骨組みつまり構造体として、複数本の既存柱11と、これら既存柱11同士を連結する複数の既存大梁12と、を備える。また、この既存建物1は、非構造体として、既存床スラブ13、既存外壁14、既存間仕切壁15などを備える。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of an existing building 1 as an existing structure to which a structure reconstructing method according to an embodiment of the present invention is applied.
The existing building 1 is a high-rise building with m (m is a natural number) floors. This existing building 1 includes a plurality of existing pillars 11 and a plurality of existing large beams 12 that connect these existing pillars 11 as a framework, that is, a structure. Moreover, this existing building 1 is provided with the existing floor slab 13, the existing outer wall 14, the existing partition wall 15, etc. as a non-structural body.

本発明の構造物改築方法は、この既存建物1を改築するものである。具体的には、既存建物1の既存外壁14を解体して、新設外壁16(図9参照)を取り付けるものである。   The structure reconstruction method of the present invention is to reconstruct the existing building 1. Specifically, the existing outer wall 14 of the existing building 1 is disassembled and a new outer wall 16 (see FIG. 9) is attached.

以下、既存建物1を改築する手順について、図2のフローチャートを参照しながら説明する。   Hereinafter, the procedure for renovating the existing building 1 will be described with reference to the flowchart of FIG.

ステップS1では、図3に示すように、仮設壁としての外周足場20を架設する。
この外周足場20は、既存建物1の屋上階の既存床スラブ13から吊下げ支持されて既存建物1を囲む矩形枠状の基部21と、この基部21の上側に設けられて既存建物1の外周面を覆う上側仮設壁22と、基部21の下側に設けられて既存建物1の外周面を覆う下側仮設壁23と、を備える。
In step S1, as shown in FIG. 3, the outer periphery scaffolding 20 as a temporary wall is constructed.
The outer periphery scaffold 20 is suspended and supported from an existing floor slab 13 on the roof floor of the existing building 1 and has a rectangular frame-shaped base portion 21 surrounding the existing building 1 and an outer periphery of the existing building 1 provided above the base portion 21. The upper temporary wall 22 which covers a surface, and the lower temporary wall 23 which is provided under the base 21 and covers the outer peripheral surface of the existing building 1 are provided.

上側仮設壁22および下側仮設壁23は、それぞれ、既存建物1の2層分の高さであり、枠組足場24を例えば6段ずつ積層して構成される。すなわち、上側仮設壁22は、基部21上に枠組足場24を上方に向かって積層することで架設される。一方、下側仮設壁23は、基部21の下面から、枠組足場24を吊下げ支持しながら下方に向かって積層することで架設される。   Each of the upper temporary wall 22 and the lower temporary wall 23 has a height corresponding to two layers of the existing building 1, and is configured by stacking frame scaffolds 24, for example, in six stages. That is, the upper temporary wall 22 is constructed by laminating the frame scaffold 24 upward on the base 21. On the other hand, the lower temporary wall 23 is constructed from the lower surface of the base portion 21 by being laminated downward while hanging and supporting the frame scaffold 24.

また、上側仮設壁22の外周面は、メッシュシート25で覆われている。なお、これに限らず、上側仮設壁22の外周面を防音パネルで覆ってもよい。
また、下側仮設壁23の外周面は、防音パネル26で覆われている。なお、これに限らず、下側仮設壁23の外周面をメッシュシートで覆ってもよい。
The outer peripheral surface of the upper temporary wall 22 is covered with a mesh sheet 25. However, the present invention is not limited thereto, and the outer peripheral surface of the upper temporary wall 22 may be covered with a soundproof panel.
The outer peripheral surface of the lower temporary wall 23 is covered with a soundproof panel 26. However, the present invention is not limited thereto, and the outer peripheral surface of the lower temporary wall 23 may be covered with a mesh sheet.

具体的には、まず、図4に示すように、既存建物1の屋上階の既存床スラブ13に、基部21を支持する支持装置30を所定間隔おきに設ける。この支持装置30は、屋上階の既存床スラブ13に設けられて既存建物1の外側に向かって突出して延びる延出部31と、この延出部31の先端に設けられた油圧ジャッキ32と、この油圧ジャッキ32に昇降可能に支持されて基部21に連結された吊り材33と、を備える。
なお、本実施形態では、延出部31をトラス梁とするが、これに限らず、H鋼など直線状の鋼材でもよい。
Specifically, first, as shown in FIG. 4, support devices 30 that support the base 21 are provided at predetermined intervals on the existing floor slab 13 on the roof floor of the existing building 1. The support device 30 is provided on the existing floor slab 13 on the rooftop floor, and extends and protrudes toward the outside of the existing building 1, and a hydraulic jack 32 provided at the tip of the extension 31. A suspension member 33 supported by the hydraulic jack 32 so as to be movable up and down and coupled to the base portion 21.
In the present embodiment, the extending portion 31 is a truss beam. However, the present invention is not limited to this, and a straight steel material such as H steel may be used.

次に、図4に示すように、外周足場20を、支持装置30で吊下げ支持して架設する。なお、図4では、理解の容易のため、上側仮設壁22および下側仮設壁23を破線で示している。   Next, as shown in FIG. 4, the outer circumference scaffold 20 is suspended and supported by the support device 30. In FIG. 4, the upper temporary wall 22 and the lower temporary wall 23 are indicated by broken lines for easy understanding.

すなわち、まず、油圧ジャッキ32から吊り材33を介して基部21を吊下げ支持する。このとき、基部21の高さを(m−3)階床レベルとし、基部21の外側を吊り材33で吊下げ支持する。
次に、この基部21の上側に上側仮設壁22を架設するとともに、基部21の下側に下側仮設壁23を架設する。
That is, first, the base 21 is suspended and supported from the hydraulic jack 32 via the suspension member 33. At this time, the height of the base 21 is set to (m−3) floor level, and the outside of the base 21 is suspended and supported by the suspension member 33.
Next, the upper temporary wall 22 is installed above the base 21 and the lower temporary wall 23 is installed below the base 21.

以下、上側仮設壁22で囲まれた空間を新設作業スペース50とし、下側仮設壁23で囲まれた空間を解体作業スペース40とする。すると、新設作業スペース50は、m階および(m−1)階に設けられ、解体作業スペース40は、(m−2)階および(m−3)階に設けられる。   Hereinafter, a space surrounded by the upper temporary wall 22 is referred to as a new work space 50, and a space surrounded by the lower temporary wall 23 is referred to as a dismantling work space 40. Then, the new work space 50 is provided on the m floor and the (m-1) floor, and the dismantling work space 40 is provided on the (m-2) floor and the (m-3) floor.

図5は、外周足場20の基部21の拡大断面図である。
基部21には、基部21と既存建物1の外壁面との隙間を塞ぐ隙間塞ぎ部材27が設けられている。この隙間塞ぎ部材27は、平板状の塞ぎ部材本体271と、この塞ぎ部材本体271の先端縁に設けられて弾性変形可能なゴム部材272と、を備える。ゴム部材272は、既存建物1の外壁面に密着しており、これにより、基部21と既存建物1の外壁面との隙間を確実に塞いでいる。
FIG. 5 is an enlarged cross-sectional view of the base 21 of the outer periphery scaffold 20.
The base 21 is provided with a gap closing member 27 that closes the gap between the base 21 and the outer wall surface of the existing building 1. The gap closing member 27 includes a flat closing member main body 271 and a rubber member 272 that is provided at a distal end edge of the closing member main body 271 and is elastically deformable. The rubber member 272 is in close contact with the outer wall surface of the existing building 1, thereby reliably closing the gap between the base portion 21 and the outer wall surface of the existing building 1.

したがって、この基部21の隙間塞ぎ部材27は、外周足場20で囲まれた作業空間を、上下2つの作業空間、つまり、上側仮設壁22で囲まれた新設作業スペース50と、下側仮設壁23で囲まれた解体作業スペース40と、に仕切っている。   Therefore, the gap closing member 27 of the base portion 21 is divided into two upper and lower work spaces, that is, a new work space 50 surrounded by the upper temporary wall 22, and a lower temporary wall 23. And the dismantling work space 40 surrounded by.

また、上側仮設壁22および下側仮設壁23には、既存建物1の外壁面に沿って移動可能な移動壁繋ぎ28が設けられている。移動壁繋ぎ28の先端部は、既存建物1の外壁面に設けられて略鉛直方向に延びる図示しないゴンドラガイドに係止しており、これにより、移動壁繋ぎ28は、ゴンドラガイドに沿って移動可能でかつ外壁面の面外方向への移動が規制される。   Further, the upper temporary wall 22 and the lower temporary wall 23 are provided with a moving wall joint 28 that can move along the outer wall surface of the existing building 1. The distal end of the moving wall joint 28 is locked to a gondola guide (not shown) provided on the outer wall surface of the existing building 1 and extending in a substantially vertical direction, so that the moving wall joint 28 moves along the gondola guide. The movement of the outer wall surface in the out-of-plane direction is restricted.

ステップS2では、図6に示すように、新設作業スペース50内で、既存建物1の既存外壁14を解体する。
この解体作業では、既存外壁14を取り外した後、解体作業スペース40内で小割りして、既存建物1の図示しない内部エレベータを利用して下階に運搬する。あるいは、既存建物1の内部または外周部に図示しない搬出口を設け、この搬出口を通して、下階に運搬してもよい。下階に運搬した解体材は、リサイクル可能な材料と産業廃棄物との仕分けを行って、場外に搬出する。
In step S <b> 2, as shown in FIG. 6, the existing outer wall 14 of the existing building 1 is dismantled in the new work space 50.
In this dismantling work, after the existing outer wall 14 is removed, it is subdivided in the dismantling work space 40 and transported to the lower floor using an internal elevator (not shown) of the existing building 1. Alternatively, a carry-out port (not shown) may be provided inside or on the outer periphery of the existing building 1 and transported to the lower floor through this carry-out port. The demolished material transported to the lower floor is sorted out into recyclable materials and industrial waste, and then taken out of the venue.

ステップS3では、図7に示すように、解体作業スペース40内で、ステップS2と同様に既存建物1の既存外壁14を解体する。
また、既存外壁14の解体と同時に、図7に示すように、新設作業スペース50内で、新設外壁16を取り付ける。このとき、補強柱や補強梁を適宜設けてもよい。
この取り付け作業では、既存建物1の図示しない内部エレベータを利用して、新設外壁16を下階から当階まで運搬する。
In step S3, as shown in FIG. 7, the existing outer wall 14 of the existing building 1 is dismantled in the dismantling work space 40 in the same manner as in step S2.
Simultaneously with the disassembly of the existing outer wall 14, the new outer wall 16 is attached in the new work space 50 as shown in FIG. 7. At this time, reinforcing columns and reinforcing beams may be provided as appropriate.
In this attachment work, the new outer wall 16 is transported from the lower floor to the current floor using an unillustrated internal elevator of the existing building 1.

ステップS4では、図8に示すように、外周足場20を2層分だけ下方に移動する。具体的には、油圧ジャッキ32を駆動して、吊り材33を下降させることで、外周足場20を下方に移動させる。
これにより、新設作業スペース50および解体作業スペース40を2層だけ下方に形成する。つまり、新設作業スペース50は、(m−2)階および(m−3)階に位置し、解体作業スペース40は、(m−4)階および(m−5)階に位置する。
In step S4, as shown in FIG. 8, the outer periphery scaffold 20 is moved downward by two layers. Specifically, the outer peripheral scaffold 20 is moved downward by driving the hydraulic jack 32 and lowering the suspension member 33.
As a result, the new work space 50 and the dismantling work space 40 are formed downward by two layers. That is, the new work space 50 is located on the (m-2) floor and the (m-3) floor, and the dismantling work space 40 is located on the (m-4) floor and the (m-5) floor.

ステップS5では、図9に示すように、ステップS3を実行して、既存外壁14を解体するとともに新設外壁16を取り付ける。このように、ステップS3、S4を1セットとして繰り返して、上階から下階に向かって改築作業を行う。   In step S5, as shown in FIG. 9, step S3 is executed to disassemble the existing outer wall 14 and attach the new outer wall 16. Thus, steps S3 and S4 are repeated as one set, and the reconstruction work is performed from the upper 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)外周足場20で囲まれた作業空間を基部21で上下に仕切って、下側仮設壁23で囲まれた下側の空間つまり解体作業スペース40内では、既存外壁14を解体しつつ、上側仮設壁22で囲まれた上側の空間つまり新設作業スペース50内では、新設外壁16を新たに取り付ける。したがって、既存外壁14の取り外し作業と新設外壁16の取り付け作業とを異なる作業エリアで同時に行うことができ、作業効率を向上できる。また、作業者の安全性を確保できるうえに、資材や工具の飛来や落下を確実に防止できる。
また、新設外壁16の取り付け作業を行う層(フロア)では、既に既存外壁14の取り外し作業が完了しているので、取り外した既存外壁14が新設外壁16に接触して、新設外壁16が損傷することはない。
According to this embodiment, there are the following effects.
(1) The work space surrounded by the outer periphery scaffold 20 is divided up and down by the base 21, and the existing outer wall 14 is dismantled in the lower space surrounded by the lower temporary wall 23, that is, in the dismantling work space 40, In the upper space surrounded by the upper temporary wall 22, that is, in the new work space 50, the new outer wall 16 is newly attached. Therefore, the work of removing the existing outer wall 14 and the work of attaching the new outer wall 16 can be performed simultaneously in different work areas, and work efficiency can be improved. In addition, the safety of the worker can be ensured, and the flying and dropping of materials and tools can be reliably prevented.
Further, since the existing outer wall 14 has already been removed from the layer (floor) where the new outer wall 16 is attached, the removed existing outer wall 14 comes into contact with the new outer wall 16 and the new outer wall 16 is damaged. There is nothing.

作業エリアを上側仮設壁22および下側仮設壁23で囲んだので、既存建物1の解体時に、粉塵が周囲に飛散するのを防止できるうえに、騒音を低減でき、さらには、解体材の落下も防止できる。よって、周辺環境に与える負荷を少なくできる。   Since the work area is surrounded by the upper temporary wall 22 and the lower temporary wall 23, when the existing building 1 is dismantled, dust can be prevented from being scattered around, the noise can be reduced, and the dismantling material can be dropped. Can also be prevented. Thus, the load on the surrounding environment can be reduced.

また、既存建物1の高層部を解体する場合でも、外周足場20により風の影響を受けないので、効率よく既存建物1を解体できる。   Even when the high-rise part of the existing building 1 is dismantled, the existing scaffold 1 can be dismantled efficiently because it is not affected by the wind from the outer periphery scaffold 20.

(2)上側仮設壁22を、枠組足場24を積層して構成したので、上側仮設壁22の基部21からの高さを適宜調整して、新設作業スペース50を任意の広さに設定できる。また、下側仮設壁23を、枠組足場24を積層して構成したので、下側仮設壁23の基部21からの深さ(すなわち、基部21から下側仮設壁23の下端までの距離)を適宜調整して、解体作業スペース40を任意の広さに設定できる。
また、枠組足場24をさらに積層したり、一部の枠組足場24を撤去したりすることで、仮設壁22、23の高さ(深さ)を後から自在に調整できる。
(2) Since the upper temporary wall 22 is configured by laminating the frame scaffold 24, the height of the upper temporary wall 22 from the base 21 can be adjusted as appropriate to set the new work space 50 to an arbitrary size. In addition, since the lower temporary wall 23 is configured by laminating the frame scaffold 24, the depth of the lower temporary wall 23 from the base 21 (that is, the distance from the base 21 to the lower end of the lower temporary wall 23) is set. By appropriately adjusting, the dismantling work space 40 can be set to an arbitrary size.
Further, the height (depth) of the temporary walls 22 and 23 can be freely adjusted later by further stacking the frame scaffolds 24 or removing some of the frame scaffolds 24.

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。
また、本実施形態では、外周足場20を既存建物1の屋上階近傍で架設したが、これに限らず、外周足場20を地上にて架設し、その後、油圧ジャッキ32を駆動して、外周足場20を地上から既存建物1の屋上階近傍まで上昇させてもよい。
It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
Moreover, in this embodiment, the outer periphery scaffold 20 was constructed near the rooftop floor of the existing building 1. However, the present invention is not limited to this, and the outer periphery scaffold 20 is constructed on the ground, and then the hydraulic jack 32 is driven to construct the outer periphery scaffold. 20 may be raised from the ground to the vicinity of the rooftop floor of the existing building 1.

また、本実施形態では、基部21を、既存建物1の屋上階の既存床スラブ13から吊下げ支持したが、これに限らない。例えば、既存建物1の構造体から略水平に基部21を張り出してもよい。この場合、基部21を盛り替えることで、外周足場20を下方に移動する。   Moreover, in this embodiment, although the base 21 was suspended and supported from the existing floor slab 13 of the rooftop floor of the existing building 1, it is not restricted to this. For example, you may project the base 21 from the structure of the existing building 1 substantially horizontally. In this case, the outer periphery scaffold 20 is moved downward by changing the base 21.

また、外周足場20を既存建物1の側面毎に分割可能としてもよい。例えば、本実施形態では、外周足場20を4つに分割可能とし、分割した外周足場20のそれぞれが既存建物1の一つの側面を覆うようにする。この場合、既存建物1の各側面の工事の進行状況に応じて、分割した外周足場20を下方に移動させると、分割した外周足場20同士の間には段差が生じるので、この段差部分にも足場を架設する。   Further, the outer periphery scaffold 20 may be divided for each side of the existing building 1. For example, in this embodiment, the outer periphery scaffold 20 can be divided into four, and each of the divided outer periphery scaffolds 20 covers one side of the existing building 1. In this case, if the divided outer scaffold 20 is moved downward according to the progress of the construction of each side surface of the existing building 1, a step is generated between the divided outer scaffolds 20, so that this step portion also Build a scaffold.

1…既存建物(既存構造物)
11…既存柱
12…既存大梁
13…既存床スラブ
14…既存外壁
15…既存間仕切壁
16…新設外壁
20…外周足場(仮設壁)
21…基部
22…上側仮設足場
23…下側仮設足場
24…枠組足場
25…メッシュシート
26…防音パネル
27…隙間塞ぎ部材
28…移動壁繋ぎ
30…支持装置
31…延出部
32…油圧ジャッキ
33…吊り材
40…解体作業スペース
50…新設作業スペース
271…板本体
272…ゴム部材
1 ... Existing building (existing structure)
DESCRIPTION OF SYMBOLS 11 ... Existing pillar 12 ... Existing large beam 13 ... Existing floor slab 14 ... Existing outer wall 15 ... Existing partition wall 16 ... Newly installed outer wall 20 ... Outer periphery scaffold (temporary wall)
DESCRIPTION OF SYMBOLS 21 ... Base 22 ... Upper temporary scaffold 23 ... Lower temporary scaffold 24 ... Frame scaffold 25 ... Mesh sheet 26 ... Sound insulation panel 27 ... Gap closing member 28 ... Moving wall connection 30 ... Supporting device 31 ... Extension part 32 ... Hydraulic jack 33 ... Suspension material 40 ... Demolition work space 50 ... New work space 271 ... Plate body 272 ... Rubber member

Claims (5)

既存構造物を改築する構造物改築方法であって、
前記既存構造物に支持されて当該既存構造物を囲む基部、当該基部の上側に設けられて前記既存構造物の外周面を覆う上側仮設壁、および前記基部の下側に設けられて前記既存構造物の外周面を覆う下側仮設壁を備える仮設壁を架設する初期工程と、
前記下側仮設壁で囲まれた空間で、少なくとも既存外壁を解体するとともに、前記上側仮設壁で囲まれた空間で、少なくとも新設外壁を取り付ける改築工程と、
前記仮設壁を下方に移動しながら前記改築工程を繰り返す繰り返し工程と、を備えることを特徴とする構造物改築方法。
A method for reconstructing a structure that remodels an existing structure,
A base part that is supported by the existing structure and surrounds the existing structure, an upper temporary wall that is provided above the base part and covers an outer peripheral surface of the existing structure, and a base part that is provided below the base part and the existing structure An initial step of constructing a temporary wall comprising a lower temporary wall covering the outer peripheral surface of the object;
In the space surrounded by the lower temporary wall, at least the existing outer wall is demolished, and in the space surrounded by the upper temporary wall, at least a renovation step of attaching a new outer wall;
And a repeating step of repeating the remodeling step while moving the temporary wall downward.
前記上側仮設壁および前記下側仮設壁を、それぞれ、枠組足場を積層して構成することを特徴とする請求項1に記載の構造物改築方法。   The method for reconstructing a structure according to claim 1, wherein the upper temporary wall and the lower temporary wall are configured by stacking frame scaffolds, respectively. 既存構造物を改築する構造物改築システムであって、
前記既存構造物に支持されて当該既存構造物を囲む基部、当該基部の上側に設けられて前記既存構造物の外周面を覆う上側仮設壁、および前記基部の下側に設けられて前記既存構造物の外周面を覆う下側仮設壁を有する仮設壁を備え、
前記下側仮設壁で囲まれた空間内では、少なくとも既存外壁が解体され、
前記上側仮設壁で囲まれた空間内では、少なくとも新設外壁が取り付けられることを特徴とする構造物改築システム。
A structure reconstruction system for remodeling an existing structure,
A base part that is supported by the existing structure and surrounds the existing structure, an upper temporary wall that is provided above the base part and covers an outer peripheral surface of the existing structure, and a base part that is provided below the base part and the existing structure A temporary wall having a lower temporary wall covering the outer peripheral surface of the object,
In the space surrounded by the lower temporary wall, at least the existing outer wall is dismantled,
In the space surrounded by the upper temporary wall, at least a new outer wall is attached.
前記上側仮設壁および前記下側仮設壁は、それぞれ、枠組足場を積層して構成されることを特徴とする請求項3に記載の構造物改築システム。   4. The structural reconstruction system according to claim 3, wherein the upper temporary wall and the lower temporary wall are each configured by stacking frame scaffolds. 既存構造物を改築する構造物改築方法であって、
前記既存構造物を囲む基部で作業空間を上下に仕切って、
一方の作業空間では、当該既存構造物の外壁を解体し、他方の作業空間では、当該既存構造物に新たに外壁を取り付けることを特徴とする構造物改築方法
A method for reconstructing a structure that remodels an existing structure,
Dividing the work space up and down at the base surrounding the existing structure,
A structure reconstructing method comprising disassembling an outer wall of the existing structure in one work space and attaching a new outer wall to the existing structure in the other work space .
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