JP4985816B2 - Upper floor expansion method for existing buildings - Google Patents

Upper floor expansion method for existing buildings Download PDF

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JP4985816B2
JP4985816B2 JP2010106320A JP2010106320A JP4985816B2 JP 4985816 B2 JP4985816 B2 JP 4985816B2 JP 2010106320 A JP2010106320 A JP 2010106320A JP 2010106320 A JP2010106320 A JP 2010106320A JP 4985816 B2 JP4985816 B2 JP 4985816B2
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existing building
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孝幸 久保田
康正 鈴井
哲 近藤
宏 村岡
康博 今井
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Obayashi Corp
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Description

本発明は、既存建物の上部増床工法に関し、特に、都心部等の表通りに面する既存建物の未利用容積分の空間を有効に利用することができるとともに、街区の再開発、ヒートアイランド対策等の事業を行うのに有効な既存建物の上部増床工法に関する。   The present invention relates to an upper floor expansion method for an existing building, and in particular, can effectively use a space for an unused volume of an existing building facing a main street such as a city center, redevelopment of a block, measures against heat island, etc. This is related to the method of expanding the upper floor of an existing building, which is effective for conducting the project.

一般に、都心部等の表通りに面している既存建物は、未利用の容積を有していることが多く、この未利用の容積空間を有効に利用することが望まれている。既存建物の未利用の容積空間を有効利用する方法としては、「既存建物の上部に増築する」、「既存建物を地下躯体を残して建替える」、「既存建物を全面建替えする」、「既存建物を隣接地等と一緒に協同建替えする」等の方法がある。   In general, existing buildings facing the main street such as the city center often have an unused volume, and it is desired to use this unused volume space effectively. Effective ways to use the unused volume of existing buildings include “extending the existing building”, “rebuilding the existing building leaving the underground building”, “rebuilding the existing building completely”, “ For example, there is a method of “reconstructing an existing building together with adjacent land”.

これらの方法のうち、既存建物の上部に増築する方法は、増築部分の荷重を下部の既存建物で受けるため、下部の既存建物を補強する必要が生じ、既存建物の１階部分の利用面積が減少してしまう。この場合、利用面積の減少の問題をなくすため、増築部分を支持する柱を既存建物の周囲に立てる方法もあるが、建物が密集している都心部等においては、スペースを確保することが困難であるため、実施が不可能である。   Of these methods, the method of adding to the upper part of the existing building receives the load of the added part in the lower existing building, so it is necessary to reinforce the lower existing building, and the use area of the first floor part of the existing building is reduced. It will decrease. In this case, in order to eliminate the problem of reduction in the use area, there is a method of standing pillars that support the extension part around the existing building, but it is difficult to secure space in the city center where the building is dense Therefore, implementation is impossible.

また、地下躯体を残して建替える方法は、その地下躯体の信用度を確かめたり、地下の補強をすることが困難であるため、１階や地下部分の利用が制約されてしまう。   In addition, since the method of rebuilding with the underground structure remaining is difficult to confirm the reliability of the underground structure or to reinforce the underground structure, the use of the first floor or the underground part is restricted.

さらに、既存建物を全面建替えする方法は、建物が密集している都心部等では、地下躯体を構築することが難しため、全面建替えが困難になる。   Furthermore, the method of completely rebuilding an existing building makes it difficult to completely rebuild an underground building in a city center where buildings are densely packed.

さらに、協同建替えする方法は、複数の建物や地権者が存在する場合に、調整に時間や手間がかかる。   Further, the method of cooperative rebuilding takes time and labor for adjustment when there are a plurality of buildings and landowners.

さらに、地区レベルで上記のような事業を行う場合には、一旦、全ての居住者を移住させて、全ての建物を撤去しなければならないため、個々人の状況や個々の建物の状況により調整に非常に時間がかかり、また、耐用性のある建物をも撤去しなければならないため、無駄が生じてしまう。   Furthermore, when conducting the above-mentioned projects at the district level, all residents must be moved once and all buildings must be removed, so adjustments may be made depending on the individual circumstances and individual building conditions. This is very time consuming and wasteful because the durable building must be removed.

一方、上記のような問題に対処するため、市街地の既存建物を跨ぐ人工地盤を構築し、この人工地盤の上部に建替建物を構築し、建替建物が完成した後に既存建物から建替建物に移住し、この後に既存建物を解体し、既存建物の跡地に建替え建物を増築するように構成した建替工法が提案されている（例えば、特許文献１参照。）。   On the other hand, in order to deal with the above problems, an artificial ground straddling an existing building in the city area is constructed, a rebuilt building is constructed on the upper part of the artificial ground, and the rebuilt building is completed after the rebuilt building is completed. There has been proposed a rebuilding method in which an existing building is demolished and an existing building is demolished and an additional building is added to the site of the existing building (see, for example, Patent Document 1).

特許第３３５０８０２号公報Japanese Patent No. 3350802

しかし、上記のような建替工法にあっては、市街地の既存の建物を跨ぐ大掛かりな人工地盤を構築しなければならないため、都心部等の建物が密集している地区においては人工地盤を支持する支柱の立設が困難になるため、適用可能な範囲が制限されてしまう。   However, with the above-mentioned reconstruction method, it is necessary to construct a large artificial ground that straddles the existing buildings in the city, so the artificial ground is supported in areas where buildings such as the city center are dense. Since it is difficult to set up the supporting column, the applicable range is limited.

本発明は、上記のような従来の問題に鑑みなされたものであって、都心部等の建物が密集している地区においても、既存の建物上部の未利用の容積部分に容易に増築建物を構築することができるとともに、街区全体の再開発、ヒートアイランド対策等を実施する場合に、居住したままの状態で再開発、ヒートアイランド対策を実施することができる、既存建物の上部増床工法を提供することを目的とする。   The present invention has been made in view of the conventional problems as described above, and in an area where buildings such as the city center are densely populated, an extension building can be easily added to an unused volume portion above the existing building. Providing an upper floor expansion method for existing buildings that can be built and can be redevelopd and heat island countermeasures while remaining resident when redevelopment of the entire block, heat island countermeasures, etc. For the purpose.

主たる解決手段は、既存建物の上部に増築建物を構築する既存建物の上部増床工法であって、前記既存建物の上部に構築した増築建物を、前記既存建物に隣接する支持構造物から張り出させた吊構造支持部に吊設する工法であり、前記既存建物に隣接して支持構造物を構築する支持構造物の構築工程と、該支持構造物の構築工程で構築した支持構造物から前記既存建物の上部に水平に張り出る前記吊構造支持部を構築する吊構造支持部の構築工程と、該吊構造支持部の構築工程で構築した吊構造支持部から、吊材を介して吊床を順次下方に送り出すことによって、前記既存建物に向かって順次増床し、前記既存建物の上部空間に前記吊構造支持部によって吊設された前記増築建物を構築する増築建物の構築工程と、該増築建物の構築工程によって構築された増築建物の下部と前記既存建物の上部との間を連結する既存建物と増築建物との連結工程とを備えていることを特徴とする既存建物の上部増床工法、である。The main solution is an upper floor extension method for an existing building that builds an extension building on top of the existing building, and the extension building built on the upper part of the existing building is projected from the support structure adjacent to the existing building. A construction method for suspending the suspension structure, and a support structure construction process for constructing a support structure adjacent to the existing building, and a support structure constructed in the construction process of the support structure. A suspension structure support portion for constructing the suspension structure support portion that projects horizontally on the upper part of an existing building, and a suspension floor from the suspension structure support portion constructed in the construction step of the suspension structure support portion via a suspension material. An extension building construction step of building the extension building that is sequentially expanded downward toward the existing building and constructing the extension building suspended by the suspension structure support portion in the upper space of the existing building, and the extension According to the building construction process Top up bed method of existing buildings, characterized in that a connecting process with existing buildings and build-building for connecting the bottom and the top of the existing building build-building constructed Te is.

本発明の既存建物の上部増床工法によれば、既存建物を撤去することなく、既存建物の上部に増築建物を構築することができるので、大規模の地下躯体の再構築が困難な既存建物であっても、既存建物の未利用容積部分を有効に利用することができる。従って、都心部等の表通りに面している既存建物の増床に有効に利用することができる。   According to the upper floor expansion method of the existing building of the present invention, it is possible to construct an additional building on the upper part of the existing building without removing the existing building, so it is difficult to reconstruct a large-scale underground building Even so, the unused volume portion of the existing building can be used effectively. Therefore, it can be effectively used for increasing the floor area of an existing building facing the main street such as a city center.

また、既存街区に適用することにより、既存建物を撤去することなく、既存建物に居住したままの状態で、人工地盤を構築することができ、この人工地盤を利用することにより、既存建物の上部に増築建物を構築したり、人工地盤の上部に公園等の緑化施設を構築したりすることができ、既存街区の再開発、ヒートアイランド対策等を行うことができ、環境保全に貢献できる街づくりを行うことができる。   In addition, by applying to an existing block, an artificial ground can be constructed while remaining in the existing building without removing the existing building. By using this artificial ground, the upper part of the existing building can be constructed. Building a building that can contribute to environmental conservation, such as building an additional building or building a greening facility such as a park above the artificial ground, redeveloping the existing block, taking measures against heat islands, etc. It can be carried out.

本発明による既存建物の上部増床工法の第１の実施の形態を示した説明図である。It is explanatory drawing which showed 1st Embodiment of the upper floor expansion method of the existing building by this invention. 本発明による既存建物の上部増床工法の第２の実施の形態を示した説明図である。It is explanatory drawing which showed 2nd Embodiment of the upper floor expansion method of the existing building by this invention. 本発明による既存建物の上部増床工法の第３の実施の形態を示した説明図である。It is explanatory drawing which showed 3rd Embodiment of the upper floor expansion method of the existing building by this invention. 本発明による既存建物の上部増床工法の第４の実施の形態を示した説明図である。It is explanatory drawing which showed 4th Embodiment of the upper floor expansion method of the existing building by this invention. 本発明による既存建物の上部増床工法の第５の実施の形態を示した説明図である。It is explanatory drawing which showed 5th Embodiment of the upper floor expansion method of the existing building by this invention. 本発明による既存建物の上部増床工法の第６の実施の形態を示した説明図である。It is explanatory drawing which showed 6th Embodiment of the upper floor expansion method of the existing building by this invention.

以下、図面に示す本発明の実施の形態について説明する。
なお、本明細書及び添付図面には、少なくとも以下の事項が開示されている。 Hereinafter, embodiments of the present invention shown in the drawings will be described.
Note that at least the following matters are disclosed in the present specification and the accompanying drawings.

第１事項は、既存建物の上部に増築建物を構築する既存建物の上部増床工法であって、前記既存建物の上部に構築した増築建物を、前記既存建物に隣接する支持構造物から張り出させた吊構造支持部に吊設することを特徴とする。The first matter is an upper floor construction method for an existing building that builds an extension building on the upper part of the existing building, and the extension building constructed on the upper part of the existing building is projected from the support structure adjacent to the existing building. It is characterized by being hung on a suspended structure support portion.
本事項による既存建物の上部増床工法によれば、既存建物の上部に構築した増築建物は、既存建物に隣接する支持構造物から張り出た吊構造支持部に吊設されることになる。According to the upper floor expansion method of the existing building according to this matter, the extension building constructed on the upper part of the existing building is suspended by the suspension structure support portion that protrudes from the support structure adjacent to the existing building.

また、第２事項は、第１事項に記載の既存建物の上部増床工法であって、前記既存建物に隣接して支持構造物を構築する支持構造物の構築工程と、該支持構造物の構築工程で構築した支持構造物から前記既存建物の上部に張り出る前記吊構造支持部を構築する吊構造支持部の構築工程と、該吊構造支持部の構築工程で構築した吊構造支持部から前記既存建物に向かって順次増床し、前記既存建物の上部空間に前記吊構造支持部によって吊設された前記増築建物を構築する増築建物の構築工程と、該増築建物の構築工程によって構築された増築建物の下部と前記既存建物の上部との間を連結する既存建物と増築建物との連結工程とを備えていることを特徴とする。  In addition, the second matter is an upper floor expansion method for the existing building described in the first matter, wherein a support structure construction step for constructing a support structure adjacent to the existing building, and the support structure From the construction process of the suspension structure support part that constructs the suspension structure support part projecting from the support structure constructed in the construction process to the upper part of the existing building, and the suspension structure support part constructed in the construction process of the suspension structure support part It is constructed by an extension building construction process for constructing the extension building that is successively expanded toward the existing building and is suspended by the suspension structure support portion in the upper space of the existing building, and the extension building construction process. A step of connecting the existing building and the extension building connecting the lower part of the extension building and the upper part of the existing building.
本事項による既存建物の上部増床工法によれば、支持構造物の構築工程において、既存建物に隣接する部分に支持構造物が構築され、吊構造支持部の構築工程において、支持構造物から既存建物の上部に張り出る吊構造支持部が構築される。そして、増築建物の構築工程において、吊構造支持部から既存建物の上部に向かって順次増床されて、吊構造支持部に吊設された状態で増築構造物が構築され、既存建物と増築建物との連結工程において、増築建物と既存建物との間が連結され、既存建物の未利用空間に増築建物が構築されることになる。According to the upper floor expansion method for existing buildings according to this matter, in the construction process of the support structure, the support structure is constructed in the part adjacent to the existing building, and in the construction process of the suspended structure support part, A suspended structure support is built over the building. Then, in the construction process of the extension building, the floor is sequentially expanded from the suspension structure support part toward the upper part of the existing building, and the extension structure is constructed in a state of being suspended from the suspension structure support part. In the connecting process, the extension building and the existing building are connected, and the extension building is constructed in the unused space of the existing building.

さらに、第３事項は、第２事項に記載の既存建物の上部増床工法であって、前記吊構造支持部の構築工程において、前記支持構造物の構築工程で構築した支持構造物の上部に前記吊構造支持部を構築し、該吊構造支持部を前記既存建物の上方まで延出させることを特徴とする。  Further, the third matter is an upper floor expansion method for the existing building described in the second matter, and in the construction process of the suspension structure support part, the third matter is provided above the support structure constructed in the construction process of the support structure. The suspension structure support portion is constructed, and the suspension structure support portion is extended to above the existing building.
本事項による既存建物の上部増床工法によれば、吊構造支持部の構築工程において、支持構造物の構築工程で構築した支持構造物の上部に吊構造支持部が構築され、この吊構造支持部が既存建物の上方まで延出され、この吊構造支持部に吊設された状態で増築構造物が構築される。According to the upper floor expansion method for an existing building according to this matter, in the construction process of the suspension structure support part, the suspension structure support part is constructed on the upper part of the support structure constructed in the construction process of the support structure. The extension structure is constructed in a state where the portion extends to above the existing building and is suspended from the suspension structure support.

さらに、第４事項は、第２又は第３事項に記載の既存建物の上部増床工法であって、前記既存建物と増築建物との連結工程の後に、前記既存建物を撤去する既存建物の撤去工程と、該既存建物の撤去工程で撤去した前記既存建物の跡地に建替建物を構築する建替建物の構築工程とを備えていることを特徴とする。Furthermore, the fourth item is the method of expanding the upper floor of the existing building as described in the second or third item, and the existing building is removed after the connecting process of the existing building and the additional building. And a construction step of constructing a rebuilt building that constructs a rebuilt building on the site of the existing building removed in the removal step of the existing building.
本事項による既存建物の上部増床工法によれば、既存建物の撤去工程において、耐用年数の経過によって撤去する必要が生じた既存建物が撤去される。そして、建替建物の構築工程において、既存建物が撤去された跡地に建替建物が構築されることになる。According to the upper floor expansion method for existing buildings according to this matter, existing buildings that had to be removed due to the end of their useful lives will be removed in the process of removing existing buildings. And in the construction process of a rebuilding building, a rebuilding building will be built in the ruins where the existing building was removed.

さらに、第５事項は、第２又は第３事項に記載の既存建物の上部増床工法であって、前記既存建物と増築建物との連結工程の後に、既存建物を上部から下部に向かって順次解体し、既存建物の解体に追従して増築建物を下方に延ばして、増築建物を再構築する既存建物の撤去・増築建物の再増築工程を備えていることを特徴とする。  Further, the fifth item is the method of increasing the floor area of the existing building described in the second or third item, and after the connecting process of the existing building and the additional building, the existing building is sequentially moved from the upper part toward the lower part. Dismantling, extending the extension building downward following the dismantling of the existing building, and removing the existing building and rebuilding the extension building to reconstruct the extension building.
本事項による既存建物の上部増床工法によれば、既存建物の撤去・増築建物の再構築工程において、耐用年数の経過によって撤去する必要が生じた既存建物が上部から順次解体されるとともに、既存建物の解体に追従して増築建物が下方に向かって順次増床され、増築建物の先端が地上に到達することになる。According to the upper floor expansion method for existing buildings in accordance with this matter, existing buildings that had to be removed due to the lapse of their useful lives in the process of removing existing buildings and reconstructing additional buildings are sequentially dismantled from the top. Following the dismantling of the building, the extension building is gradually expanded downward and the tip of the extension building reaches the ground.

さらに、第６事項は、第２又は第３事項に記載の既存建物の上部増床工法であって、前記既存建物と増築建物との連結工程の後に、既存建物の撤去工程、吊構造支持部及び増築建物の降下工程、吊構造支持部の再構築工程、増築建物の再構築工程とを備えていることを特徴とする。  Furthermore, the sixth item is an upper floor expansion method for an existing building as described in the second or third item, wherein after the connecting step between the existing building and the additional building, the removal step of the existing building, the suspension structure support part And an extension building descent process, a suspension structure support part rebuilding process, and an extension building rebuilding process.
本事項による既存建物の上部増床工法によれば、既存建物の撤去工程において既存建物を撤去した後に、吊構造支持部及び増築建物の降下工程において、既存建物の跡地に吊構造支持部及び増築建物が一体となって降下する。そして、吊構造支持部の再構築工程、増築建物の再構築工程において、支持構造物の上部に吊構造支持部が構築され、この吊構造支持部に吊設された状態で増築建物が再構築されることになる。According to the upper floor expansion method for existing buildings according to this matter, after the existing building is removed in the removal process of the existing building, the suspension structure support and extension are added to the existing building in the descending process of the suspension structure support and extension building. The building descends as a unit. And in the process of rebuilding the suspension structure support part and the process of rebuilding the extension building, the suspension structure support part is constructed on the upper part of the support structure, and the extension building is rebuilt in a state of being suspended on the suspension structure support part Will be.

さらに、第７事項は、第２事項から第６事項の何れかに記載の既存建物の上部増床工法であって、前記増築建物の構築工程は、下方から上方に向かって順次増床させて増築建物を構築することを特徴とする。  Furthermore, the seventh item is an upper floor expansion method for an existing building according to any one of the second item to the sixth item, and the building process of the additional building is performed by increasing the floor sequentially from the bottom to the top. It is characterized by constructing an extension building.
本事項による既存建物の上部増床工法によれば、増築建物の構築工程において、下方から上方に向かって順次増床されて、吊構造支持部に吊設された増築構造物が構築されることになる。According to the upper floor extension method for existing buildings according to this matter, in the process of building an extension building, an extension structure is constructed in which the floors are sequentially expanded from the bottom upward and suspended from the suspension structure support. become.

さらに、第８事項は、第１事項から第７事項の何れかに記載の既存建物の上部増床工法であって、前記既存建物と前記支持構造物との間又は前記既存建物と前記増築建物との間の少なくとも何れか一方に制振装置を介装させたことを特徴とする。Furthermore, the 8th matter is the upper floor expansion method of the existing building described in any of the 1st matter to the 7th matter, and is between the existing building and the supporting structure or between the existing building and the extended building. A vibration damping device is interposed in at least one of the two.
本事項による既存建物の上部増床工法によれば、既存建物と支持構造物との間又は既存建物と増築建物との間の少なくとも一方に介装させた制振装置により、既存建物、支持構造物、及び増築建物が制振されることになる。According to the upper floor expansion method for existing buildings according to this matter, existing buildings and support structures are installed by means of vibration control devices interposed between existing buildings and support structures or between existing buildings and extension buildings. Things and extension buildings will be damped.

さらに、第９事項は、第１事項から第８事項に記載の既存建物の上部増床工法における吊構造支持部を人工地盤とすることを特徴とする。Furthermore, the ninth matter is characterized in that the suspension structure support portion in the upper floor expansion method for the existing building described in the first matter to the eighth matter is an artificial ground.
本事項による既存建物の上部増床工法によれば、既存街区の既存建物に隣接して支持構造物を構築し、この支持構造物に既存建物の上部に張り出る吊構造支持部を構築し、この吊り構造支持部を既存街区を覆う人工地盤とすることにより、既存建物の上部に吊構造支持部に吊設された増築建物を構築することができる。According to the upper floor expansion method of the existing building according to this matter, a support structure is constructed adjacent to the existing building of the existing block, and a suspended structure support portion that projects above the existing building is constructed on this support structure, By using the suspension structure support portion as an artificial ground covering the existing block, it is possible to construct an extension building suspended from the suspension structure support portion above the existing building.

さらに、第１０事項は、第９事項に記載の既存建物の上部増床工法であって、前記人工地盤の上部に、公園、庭園等の緑化施設を構築することを特徴とする。Furthermore, the tenth matter is the upper floor expansion method for the existing building described in the ninth matter, characterized in that a greening facility such as a park or a garden is constructed on the artificial ground.
本事項による既存建物の上部増床工法によれば、既存街区全体を覆う人工地盤の上部に公園、緑化施設を構築することにより、ヒートアイランド対策等を施すことができる。  According to the upper floor expansion method for existing buildings according to this matter, measures such as heat island can be taken by constructing a park and a greening facility on the artificial ground covering the entire existing block.

図１には、本発明による既存建物の上部増床工法の第１の実施の形態が示されていて、この既存建物の上部増床方法は、都心部等の表通りに面している既存建物の未利用容積分の空間を利用して増築建物を構築するのに有効な工法であって、支持構造物の構築工程と、吊構造支持部の構築工程と、増築建物の構築工程と、増築建物と既存建物との連結工程とを備えている。   FIG. 1 shows a first embodiment of an upper floor expansion method for an existing building according to the present invention. This upper floor expansion method for an existing building is an existing building facing a main street such as a city center. It is an effective method for constructing an extension building using the space of unused volume of the building, including the construction process of the support structure, the construction process of the suspension structure support part, the construction process of the extension building, and the extension It has a connection process between the building and the existing building.

（１）支持構造物の構築工程
支持構造物の構築工程は、都心部等の表通りに面している既存建物１に隣接する部分に支持構造物２を構築する工程であって、図１（ａ）に示すように、既存建物１に隣接する部分に既存建物１よりも高層のメグストラクチャー構造の支持構造物２を構築する。 (1) Construction process of support structure The construction process of the support structure is a process of constructing the support structure 2 in a portion adjacent to the existing building 1 facing the main street such as the city center. As shown to a), the support structure 2 of the Meg structure structure higher than the existing building 1 is constructed in the part adjacent to the existing building 1.

一般に、都心部等の表通りに面している既存建物１に隣接する部分、例えば、既存建物１の裏側の裏通りに面する部分等には、低密度の建物や時間貸し駐車場等の施設があることが多く、これらの建物や施設は容易に撤去することが可能であり、その撤去後の跡地に大掛かりな地下躯体を構築することも可能であるので、その撤去後の跡地に支持構造物２を構築する。なお、既存建物１に隣接する部分が空き地になっている場合には、そのまま支持構造物２を構築すればよい。   In general, there are facilities such as low-density buildings and time-rented parking lots in the part adjacent to the existing building 1 facing the main street such as the city center, for example, the part facing the back street behind the existing building 1. There are many cases, and these buildings and facilities can be easily removed, and it is also possible to build a large underground building on the site after the removal, so the support structure on the site after the removal Construct 2 In addition, what is necessary is just to build the support structure 2 as it is, when the part adjacent to the existing building 1 is vacant land.

支持構造物２は、梁、柱等を組み合わせて構成したメガストラクチャー構造であって、低密度の建物等を撤去した跡地に地下躯体を構築し、その地下躯体を基礎として既存建物１よりも高層の支持構造物２を構築する。   The support structure 2 is a mega structure constructed by combining beams, pillars, etc., and builds an underground structure on the site where low-density buildings are removed, and is higher than the existing building 1 based on the underground structure. The support structure 2 is constructed.

支持構造物２は、後述する吊構造支持部３及び吊構造支持部３に吊設される増築建物６を支持するための支柱としてのみ使用してもよいし、居住用空間、オフィス用空間等と兼用してもよいし、階段、エレベーターシャフト等と兼用してもよい。支持構造物２は、１棟に限らず、２棟以上としてもよい。   The support structure 2 may be used only as a support for supporting a suspension structure support section 3 and an extension building 6 suspended from the suspension structure support section 3 to be described later, a residential space, an office space, etc. May also be used as a staircase or an elevator shaft. The support structure 2 is not limited to one building and may be two or more buildings.

（２）吊構造支持部の構築工程
吊構造支持部の構築工程は、支持構造物の構築工程で構築した支持構造物２から既存建物１の上部に張り出る吊構造支持部３を構築する工程であって、例えば、図１（ｂ）、（ｃ）に示すように、支持構造物２の上部に吊構造支持部３を水平に構築し、吊構造支持部３の両端部を支持構造物２を中心として外方に延出させ、既存建物１の上方まで延出させる。 (2) Construction process of suspension structure support part The construction process of the suspension structure support part is a process of constructing the suspension structure support part 3 projecting from the support structure 2 constructed in the construction process of the support structure to the upper part of the existing building 1. For example, as shown in FIGS. 1B and 1C, a suspension structure support portion 3 is constructed horizontally on the support structure 2, and both ends of the suspension structure support portion 3 are supported by the support structure. 2 is extended outward, and is extended above the existing building 1.

この場合、支持構造物２の上部において、吊構造支持部３に吊材４を介して所定数の吊床５を取り付け、吊構造支持部３の両端部を支持構造物２から外方に延出させる際に、吊構造支持部３と一緒に吊床４及び吊材４を外方に送り出し、既存建物１の上方の所定の位置に位置決めする。   In this case, in the upper part of the support structure 2, a predetermined number of suspension floors 5 are attached to the suspension structure support portion 3 via suspension members 4, and both ends of the suspension structure support portion 3 are extended outward from the support structure 2. When carrying out, the suspension floor 4 and the suspension material 4 are sent out together with the suspension structure support part 3 and positioned at a predetermined position above the existing building 1.

吊構造支持部３は、梁、柱、ブレース等を組み合わせて構成したメガストラクチャー構造であって、この吊構造支持部３の両端部に既存建物１の上部に構築される増築建物６が吊設される。吊構造支持部３としては、増築建物６を吊設できる構造ものであれば特に制限はなく、例えば、トラス構造、可変形状トラス（Ｖａｒｉａｂｌｅ Ｇｅｏｍｅｔｒｙ Ｔｒｕｓｓ）構造等が挙げられる。吊構造支持部３は、増築建物６を支持する用途のみに使用してもよいし、吊構造支持部３の内部を居住空間、オフィス空間等と兼用してもよい。   The suspension structure support portion 3 has a megastructure structure configured by combining beams, columns, braces and the like, and an extension building 6 constructed on the upper part of the existing building 1 is suspended at both ends of the suspension structure support portion 3. Is done. There is no restriction | limiting in particular as the suspension structure support part 3 if it is a structure which can suspend the extension building 6, For example, a truss structure, a variable shape truss (Variable Geometry Truss) structure, etc. are mentioned. The suspension structure support part 3 may be used only for the purpose of supporting the extension building 6, or the interior of the suspension structure support part 3 may be used as a living space, an office space, or the like.

なお、吊構造支持部３は、建替建物２の高さ方向の途中部分に設けてもよいし、工場等で製作した後に、支持構造物２の上部、途中部分に設けてもよい。   In addition, the suspension structure support part 3 may be provided in the middle part of the height direction of the rebuilding building 2, and may be provided in the upper part and middle part of the support structure 2 after manufacturing in a factory etc.

（３）増築建物の構築工程
増築建物の構築工程は、図１（ｄ）に示すように、吊構造支持部の構築工程で構築した吊構造支持部３の両端部に吊材４を介して取り付けた吊床５を順次下方に送り出し、吊構造支持３から既存建物１の上部に向かって所定の間隔ごとに吊床５を設置し、既存建物１の上部に複数階層の増築建物６を構築する。 (3) Extension Building Construction Process As shown in FIG. 1 (d), the extension building construction process is performed through suspension members 4 at both ends of the suspension structure support portion 3 constructed in the suspension structure support portion construction process. The attached suspended floor 5 is sequentially sent downward, the suspended floor 5 is installed at a predetermined interval from the suspended structure support 3 toward the upper part of the existing building 1, and a multi-level extension building 6 is constructed on the upper part of the existing building 1.

（４）増築建物と既存建物との連結工程
増築建物と既存建物との連結工程は、図１（ｅ）に示すように、吊構造支持部３の両端に吊設した増築建物６の下部と、増築建物６の下方に位置する既存建物１の上部との間を連結する工程であって、両建物６、１間を柱、梁、ブレース等を介して連結する。この場合、両建物６、１間の連結部に必要に応じて、既存建物１の上部と増築建物６の下部との間を連結する階段等を設置する。 (4) Connection process between the extension building and the existing building The connection process between the extension building and the existing building is performed as shown in FIG. 1 (e) by the lower part of the extension building 6 suspended at both ends of the suspension structure support portion 3. This is a step of connecting the upper part of the existing building 1 located below the extension building 6, and connecting the two buildings 6, 1 via columns, beams, braces and the like. In this case, a staircase or the like that connects between the upper part of the existing building 1 and the lower part of the extension building 6 is installed in the connecting part between the two buildings 6 and 1 as necessary.

そして、上述した支持構造物の構築工程、吊構造支持部の構築工程、増築建物の構築工程、及び増築建物と既存建物との連結工程を経ることにより、既存建物１を撤去することなく、既存建物１を使用したままの状態で、既存建物１の上部の未利用容積分の空間に増築建物６を構築することができる。   And the existing building 1 is removed without going through the building process of the supporting structure, the building process of the suspension structure support part, the building process of the extension building, and the connection process of the extension building and the existing building. The extension building 6 can be constructed in a space corresponding to the unused volume above the existing building 1 while the building 1 is still used.

図２には、本発明による既存建物の上部増床工法の第２の実施の形態が示されていて、この既存建物の上部増床工法は、第１の実施の形態による既存建物の上部増床工法の４つの工程（支持構造物の構築工程、吊構造支持部の構築工程、増築建物の構築工程、及び増築建物と既存建物との連結工程）の後に、既存建物１を撤去する既存建物の撤去工程、及び既存建物１の撤去後の跡地に建替建物７を構築する建替建物の構築工程を備えたものであって、その他の構成は前記第１の実施の形態に示すものと同様であるので、第１の実施の形態と異なる部分についてのみ説明する。   FIG. 2 shows a second embodiment of an upper floor expansion method for an existing building according to the present invention. This upper floor expansion method for an existing building is the same as that for an upper portion of an existing building according to the first embodiment. The existing building 1 is removed after the four floor construction methods (support structure construction process, suspension structure support part construction process, extension building construction process, and extension building and existing building connection process) And the construction process of the rebuilt building for constructing the rebuilt building 7 on the former site after the removal of the existing building 1, and the other configuration is as shown in the first embodiment. Since this is the same, only the differences from the first embodiment will be described.

（５）既存建物の撤去工程
既存建物の撤去工程は、図２（ａ）に示すように、既存建物１の上部に増築建物６を構築し、既存建物１と増築建物６とを連結した後に、図２（ｂ）に示すように、耐用年数が経過したこと等を理由として既存建物１を撤去する工程であって、既存建物１の地下躯体を残して既存建物１の地上部の全体を解体し、撤去する。 (5) Removal process of the existing building The removal process of the existing building is performed after the extension building 6 is constructed on the upper part of the existing building 1 and the existing building 1 and the extension building 6 are connected as shown in FIG. As shown in FIG. 2 (b), the process of removing the existing building 1 for the reason that the useful life has passed, etc. Dismantle and remove.

都心部等の表通りに面している部分には、建築基準に合致した優良建物が密集しており、これらの建物は当面の使用には何ら問題はないが、耐用年数の経過によって建替えの必要性が生じることがあり、そのような場合に有効に適用することができる。優良建物の地下躯体は、そのままでも強度的には問題はなく、十分に使用することができるので、その地下躯体を利用して既存建物１の撤去後の跡地に建替建物７を構築する。   The buildings facing the streets of the city center are densely packed with excellent buildings that meet the building standards, and these buildings have no problem for the immediate use, but they will be rebuilt due to the passage of their useful lives. The necessity may arise, and it can be effectively applied in such a case. The underground building of the excellent building is not problematic in terms of strength and can be used sufficiently. Therefore, the rebuilding building 7 is constructed on the former site after the existing building 1 is removed using the underground building.

（６）建替建物の構築工程
建替建物の構築工程は、図２（ｃ）に示すように、既存建物１の地上部を撤去した後の跡地に、既存建物１の地下躯体を基礎とする建替建物７を、その上方に位置している増築建物６に向かって構築し、建替建物７の構築後に、建替建物７の上部と増築建物６の下部との間を連結する。
このようにして、既存建物の撤去工程、及び建替建物の構築工程を経ることにより、既存建物１を、地下躯体を再構築することなく、建替えることができる。 (6) Construction process of rebuilding building As shown in Fig. 2 (c), the building process of rebuilding building is based on the underground structure of existing building 1 on the former site after the ground part of existing building 1 is removed. The rebuilding building 7 to be constructed is constructed toward the extension building 6 located thereabove, and after the rebuilding building 7 is constructed, the upper part of the rebuilding building 7 and the lower part of the extension building 6 are connected.
In this manner, the existing building 1 can be rebuilt without reconstructing the underground building by going through the removal process of the existing building and the building process of the rebuilt building.

図３には、本発明による既存建物の上部増床工法の第３の実施の形態が示されていて、この既存建物の上部増床工法は、第１の実施の形態の既存建物の上部増床工法の４つの工程（支持構造物の構築工程、吊構造支持部の構築工程、増築建物の構築工程、及び増築建物と既存建物との連結工程）の後に、既存建物の撤去・増築建物の再増築工程を備えたものであって、その他の構成は前記第１の実施の形態に示すものと同様であるので、第１の実施の形態と異なる部分についてのみ説明する。   FIG. 3 shows a third embodiment of the upper floor expansion method for an existing building according to the present invention. The upper floor expansion method for the existing building is the same as the upper floor expansion of the existing building of the first embodiment. After the four floor construction methods (support structure construction process, suspension structure support part construction process, extension building construction process, and extension building and existing building connection process), the removal of the existing building and the extension building Since the re-extension process is provided and the other configurations are the same as those shown in the first embodiment, only the parts different from the first embodiment will be described.

（７）既存建物の撤去・増築建物の再増築工程
既存建物の撤去・増築建物の再増築工程は、既存建物１の上部に増築建物６を構築し、既存建物１と増築建物６とを連結した後に、耐用年数が経過したこと等を理由として既存建物１を撤去する際に、図３（ａ）、（ｂ）に示すように、既存建物１を上部から下部向かって順次解体し、既存建物１の解体に追従して増築建物２を下方に延ばし、既存建物１を撤去した跡地に増築建物６の先端（下端部）を到達させる。 (7) Removal of existing building / re-extension process of extension building In the removal of existing building / re-extension process of extension building, extension building 6 is built on top of existing building 1, and existing building 1 and extension building 6 are connected. When the existing building 1 is removed for the reason that the useful life has passed, the existing building 1 is dismantled sequentially from the upper part to the lower part as shown in FIGS. 3 (a) and 3 (b). Following the dismantling of the building 1, the extension building 2 is extended downward, and the tip (lower end) of the extension building 6 is made to reach the site where the existing building 1 has been removed.

このようにして、既存建物１を解体しながら、増築建物６を地上に向けて順次延ばしていくことにより、既存建物１の跡地に吊構造支持部３に吊設された増築建物６を構築することができる。   In this way, by extending the extension building 6 toward the ground while dismantling the existing building 1, the extension building 6 suspended by the suspension structure support portion 3 is constructed on the site of the existing building 1. be able to.

図４には、本発明による既存建物の上部増床工法の第４の実施の形態が示されていて、この既存建物の上部増床工法は、第１の実施の形態の既存建物の上部増床工法の４つの工程（支持構造物の構築工程、吊構造支持部の構築工程、増築建物の構築工程、及び増築建物と既存建物との連結工程）の後に、既存建物の撤去工程、吊構造支持部及び増築建物の降下工程、吊構造支持部の再構築工程、増築建物の再構築工程とを備えたものであって、その他の構成は前記第１の実施の形態に示すものと同様であるので、第１の実施の形態と異なる部分についてのみ説明する。   FIG. 4 shows a fourth embodiment of the upper floor expansion method for an existing building according to the present invention. The upper floor expansion method for the existing building is the upper floor expansion method for the existing building according to the first embodiment. After the four steps of the flooring method (support structure construction process, suspension structure support part construction process, extension building construction process, and extension building and existing building connection process), the removal process of the existing building and the suspension structure The support part and the extension building descent process, the suspension structure support part rebuilding process, and the extension building rebuilding process are provided, and the other configurations are the same as those shown in the first embodiment. Therefore, only the parts different from the first embodiment will be described.

（８）既存建物の撤去工程
既存建物の撤去工程は、第２実施の形態の既存建物の撤去工程と同一の工程であって、既存建物１の上部に増築建物６を構築し、既存建物１と増築建物６とを連結した後に、図４（ａ）に示すように、耐用年数が経過したこと等を理由として既存建物１を撤去する。この場合にも、第２の実施の形態と同様に、既存建物１の地下躯体を残して既存建物１の地上部の全体を解体し、撤去する。 (8) Removal process of existing building The removal process of the existing building is the same process as the removal process of the existing building of the second embodiment, and the extension building 6 is constructed above the existing building 1, and the existing building 1 After connecting the building 6 and the extension building 6, as shown in FIG. 4 (a), the existing building 1 is removed because the service life has passed. Also in this case, as in the second embodiment, the entire ground portion of the existing building 1 is dismantled and removed, leaving the underground building of the existing building 1.

（９）吊構造支持部及び増築建物の降下工程
この工程では、図４（ｂ）に示すように、吊構造支持部３と増築建物６とを一体として降下させ、増築建物６を既存建物１の撤去後の跡地に到達させる。この場合、吊構造支持部３及び増築建物６は、吊材４によって支持構造物２の上部に支持されたままの状態とする。 (9) Descent process of suspension structure support part and extension building In this process, as shown in FIG. 4 (b), the suspension structure support part 3 and the extension building 6 are lowered together, and the extension building 6 is moved to the existing building 1. Reach the site after the removal. In this case, the suspended structure support unit 3 and the extension building 6 are supported on the upper part of the support structure 2 by the suspended material 4.

（１０）吊り構造支持部の再構築工程、増築建物の再構築工程
この工程では、図４（ｃ）に示すように、支持構造物２の上部に、吊構造支持部３を再構築し、この吊構造支持部３の両端部に増築建物６を再構築して吊設する。この場合、上側の増築建物６と下側の増築建物６との間を吊構造支持部３を介して相互に連結してもよい。
なお、前記各実施の形態においては、支持構造物２から両側に吊構造支持部３を延出させたが、複数方向に延出させてもよいし、片側のみに延出させてもよい。 (10) Suspension structure support part rebuilding process, extension building rebuilding process In this process, as shown in FIG. 4 (c), the suspension structure support part 3 is rebuilt on the upper part of the support structure 2, The extension building 6 is reconstructed and suspended at both ends of the suspension structure support portion 3. In this case, the extension building 6 on the upper side and the extension building 6 on the lower side may be connected to each other via the suspension structure support portion 3.
In addition, in each said embodiment, although the suspension structure support part 3 was extended to the both sides from the support structure 2, you may extend in multiple directions and may be extended only to one side.

図５には、本発明による既存建物の上部増床工法の第５の実施の形態が示されていて、この既存建物の上部増床工法は、第１の実施の形態の既存建物の上部増床工法の４つの工程（支持構造物の構築工程、吊構造支持部の構築工程、増築建物の構築工程、及び増築建物と既存建物との連結工程）を備え、増築建物の構築工程において、下方から上方に向かって順次増床させて増築建物を構築するように構成したものであって、その他の構成は前記第１の実施の形態に示すものと同様である。   FIG. 5 shows a fifth embodiment of the upper floor expansion method for an existing building according to the present invention. The upper floor expansion method for the existing building is the upper floor expansion method for the existing building according to the first embodiment. 4 steps of floor construction method (support structure construction process, suspension structure support part construction process, extension building construction process, and connection process between extension building and existing building). The building is constructed such that an additional building is constructed by sequentially increasing the floor upward from the top, and the other configuration is the same as that shown in the first embodiment.

すなわち、この増築建物の構築工程においては、図５（ｂ）〜（ｅ）に示すように、吊構造支持部３に吊材４を介して吊床５を吊設し、この吊床５を既存建物２の上方の所定の位置に最下層として位置決めし、この吊床５から上方に向かって順次各階層を構築し、既存建物２の上部に所定階層の増築建物６を構築する。増築建物６の構造形式としては、メガトラス、フィーレンデールトラス等の構造を採用することができる。   That is, in the construction process of this extension building, as shown in FIGS. 5B to 5E, the suspension floor 5 is suspended from the suspension structure support 3 via the suspension material 4, and the suspension floor 5 is installed in the existing building. Positioned as a lowermost layer at a predetermined position above 2, each level is constructed sequentially from the suspended floor 5 upward, and an extension building 6 having a predetermined level is constructed above the existing building 2. As a structure type of the extension building 6, a structure such as a mega truss or a feelerdale truss can be adopted.

そして、増築建物６を構築した後に、図５（ｆ）に示すように、既存建物１と増築建物６との間を連結する。この場合、必要に応じて、両建物１、６間の連結部に制振装置８を介装させてもよい。   And after constructing the extension building 6, as shown in FIG.5 (f), between the existing building 1 and the extension building 6 is connected. In this case, you may interpose the damping device 8 in the connection part between both the buildings 1 and 6 as needed.

図６には、本発明による既存建物の上部増床工法の第６の実施の形態が示されていて、この既存建物の上部増床工法は、図６（ａ）に示すように、複数の大小の建物が建てられている街区の再開発、ヒートアイランド対策に適用したものである。   FIG. 6 shows a sixth embodiment of the upper floor expansion method for an existing building according to the present invention. This upper floor expansion method for an existing building includes a plurality of methods as shown in FIG. This is applied to redevelopment of the block where large and small buildings are built and measures against heat island.

すなわち、この既存建物の上部増床工法は、前述した第１〜第５の実施の形態によって構築される吊構造支持部３を人工地盤１０としたものであって、図６（ｂ）に示すように、既存建物１に隣接する部分に既存建物１よりも高層の支持構造物２を構築し、図６（ｃ）に示すように、支持構造物２の上部に既存建物１の上方に張り出る吊構造支持部３を構築し、この吊構造支持部３を街区の複数の既存建物１の全体を覆う人工地盤１０とする。そして、図６（ｄ）に示すように、人工地盤１０から下方に順次増床して、各既存建物１の上部空間に増築建物６を構築し、さらに、人工地盤１０の上部に公園、庭園等の緑化施設１１を構築する。   That is, the upper floor expansion method of this existing building uses the suspended structure support part 3 constructed by the first to fifth embodiments described above as the artificial ground 10, and is shown in FIG. 6 (b). As shown in FIG. 6 (c), a support structure 2 that is higher than the existing building 1 is constructed in a portion adjacent to the existing building 1, and is stretched above the existing building 1 above the support structure 2. The extended suspension structure support part 3 is constructed, and the suspension structure support part 3 is used as an artificial ground 10 that covers the entire existing buildings 1 in the block. Then, as shown in FIG. 6 (d), the floor is sequentially expanded downward from the artificial ground 10 to construct the additional building 6 in the upper space of each existing building 1. A greening facility 11 is constructed.

このようにして、既存建物１に居住したままの状態で街区全体の再開発を行うことができるとともに、人工地盤１０の上部に構築した公園、庭園等の緑化施設１１によってヒートアイランド対策を施すこともでき、環境保全に大いに貢献することができる。   In this way, the entire block can be redeveloped while remaining in the existing building 1, and heat island countermeasures can be taken by the greening facilities 11 such as parks and gardens built on the artificial ground 10. Can contribute greatly to environmental conservation.

１ 既存建物 ２ 支持構造物
３ 吊構造支持部 ４ 吊材
５ 吊床 ６ 増築建物
７ 建替建物 ８ 制振装置
１０ 人工地盤 １１ 緑化施設 DESCRIPTION OF SYMBOLS 1 Existing building 2 Support structure 3 Suspension structure support part 4 Suspension material 5 Suspension floor 6 Extension building 7 Reconstruction building 8 Damping device 10 Artificial ground 11 Greening facility

Claims (5)

既存建物の上部に増築建物を構築する既存建物の上部増床工法であって、
前記既存建物の上部に構築した増築建物を、前記既存建物に隣接する支持構造物から張り出させた吊構造支持部に吊設する工法であり、
前記既存建物に隣接して支持構造物を構築する支持構造物の構築工程と、
該支持構造物の構築工程で構築した支持構造物から前記既存建物の上部に水平に張り出る前記吊構造支持部を構築する吊構造支持部の構築工程と、
該吊構造支持部の構築工程で構築した吊構造支持部から、吊材を介して吊床を順次下方に送り出すことによって、前記既存建物に向かって順次増床し、前記既存建物の上部空間に前記吊構造支持部によって吊設された前記増築建物を構築する増築建物の構築工程と、
該増築建物の構築工程によって構築された増築建物の下部と前記既存建物の上部との間を連結する既存建物と増築建物との連結工程とを備えていることを特徴とする既存建物の上部増床工法。 An upper floor expansion method for an existing building that builds an extension building on top of the existing building,
The extension building constructed on the upper part of the existing building is a method of suspending on a suspension structure support portion projecting from a support structure adjacent to the existing building ,
A construction process of a support structure for constructing a support structure adjacent to the existing building;
A construction process of the suspension structure support part for constructing the suspension structure support part that projects horizontally from the support structure constructed in the construction process of the support structure to the upper part of the existing building;
From the suspension structure support portion constructed in the construction process of the suspension structure support portion, the suspension floor is sequentially sent downward through the suspension material, so that the floor is sequentially increased toward the existing building, and the upper space of the existing building is An extension building construction process for constructing the extension building suspended by the suspension structure support;
And a step of connecting the existing building and the extension building connecting the lower part of the extension building constructed by the construction process of the extension building and the upper part of the existing building. Floor construction method. 前記吊構造支持部の構築工程において、前記支持構造物の構築工程で構築した支持構造物の上部に前記吊構造支持部を構築し、該吊構造支持部を前記既存建物の上方まで延出させることを特徴とする請求項１に記載の既存建物の上部増床工法。   In the construction process of the suspension structure support part, the suspension structure support part is constructed above the support structure constructed in the construction process of the support structure, and the suspension structure support part is extended above the existing building. The upper floor expansion method of the existing building of Claim 1 characterized by the above-mentioned. 前記吊構造支持部は、メガストラクチャー構造であることを特徴とする請求項１又は２に記載の既存建物の上部増床工法。   The upper floor expansion method for an existing building according to claim 1, wherein the suspension structure support portion has a megastructure structure. 前記吊構造支持部は、トラス構造、又は、可変形状トラス構造であることを特徴とする請求項１〜３のいずれか１項に記載の既存建物の上部増床工法。   The upper floor expansion method for an existing building according to any one of claims 1 to 3, wherein the suspension structure support portion is a truss structure or a variable shape truss structure. 前記吊構造支持部の内部を、居住空間、又はオフィス空間と兼用することを特徴とする求項１〜４のいずれか１項に記載の既存建物の上部増床工法。   The upper floor expansion method for an existing building according to any one of claims 1 to 4, wherein the interior of the suspension structure support portion is also used as a living space or an office space.
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CN104018691A (en) * 2014-06-17 2014-09-03 中铁城建集团第二工程有限公司 Safety protection method for steel-structure house hoisting construction across existing lines
CN104018691B (en) * 2014-06-17 2017-01-11 中铁城建集团第二工程有限公司 Safety protection method for steel-structure house hoisting construction across existing lines

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