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A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION METHOD FOR NEW UNDERGROUND SKELETON, ACCOMPANIED BY DEMOLITION OF EXISTING UNDERGROUND SKELETON
PROBLEM TO BE SOLVED: To provide a construction method for a new underground skeleton that is accompanied by demolition of an existing underground skeleton, capable of reducing the costs and curtailing the construction period.SOLUTION: A temporary wall 4 that faces an outer wall 13 is built in all the tiers of an existing underground skeleton 11, inside the outer wall 13 of the existing underground skeleton 11. At the same time, a counterfort 5 is built in the direction orthogonal to the temporary wall 4, and fluidized soil 6 is filled between the temporary wall 4 and the outer wall 13, thereby backfilling the existing underground skeleton 11 to a backfill level 10 located in an intermediate part in the height direction. The part of the existing underground skeleton 11 inside the temporary wall 4 and above the backfill level 10 is demolished and removed, and then the outer wall 13 is demolished and an earth retaining wall is built near the area where the outer wall 13 was located. The portion above the backfill level 10 is demolished and removed, and a floor and a beam of a new underground skeleton are installed immediately above the backfill level 10. The part of the new underground skeleton above the floor and the beam is constructed by an ordinary basement construction method, while the part of the new underground skeleton below the floor and the beam is constructed by an inverted construction method.
【課題】コスト削減や工期短縮を図ることができる既存地下躯体の解体を伴う新設地下躯体の施工方法を提供する。【解決手段】既存地下躯体１１の外壁１３の内側に外壁１３と対向する仮設壁４を既存地下躯体１１の全層にわたって設けるとともに、仮設壁４と交差する向きの控え壁５を設け、仮設壁４と外壁１３との間に流動化土６を充填し、既存地下躯体１１の高さ方向の中間部に位置する埋戻しレベル１０まで埋戻しを行う。既存地下躯体１１のうちの仮設壁４の内側かつ埋戻しレベル１０よりも上方の部分を解体して撤去し、外壁１３を解体して外壁１３が設けられていた領域近傍に山留壁を設ける。埋戻しレベル１０よりも上方の部分を解体して撤去し、埋戻しレベル１０の直上の新設地下躯体の床および梁を設け、この床および梁よりも上側の部分では、順打ち工法で新設地下躯体の施工を行い、下側の部分では、逆打ち工法で新設地下躯体の施工を行う。【選択図】図５
CONSTRUCTION METHOD FOR NEW UNDERGROUND SKELETON, ACCOMPANIED BY DEMOLITION OF EXISTING UNDERGROUND SKELETON
PROBLEM TO BE SOLVED: To provide a construction method for a new underground skeleton that is accompanied by demolition of an existing underground skeleton, capable of reducing the costs and curtailing the construction period.SOLUTION: A temporary wall 4 that faces an outer wall 13 is built in all the tiers of an existing underground skeleton 11, inside the outer wall 13 of the existing underground skeleton 11. At the same time, a counterfort 5 is built in the direction orthogonal to the temporary wall 4, and fluidized soil 6 is filled between the temporary wall 4 and the outer wall 13, thereby backfilling the existing underground skeleton 11 to a backfill level 10 located in an intermediate part in the height direction. The part of the existing underground skeleton 11 inside the temporary wall 4 and above the backfill level 10 is demolished and removed, and then the outer wall 13 is demolished and an earth retaining wall is built near the area where the outer wall 13 was located. The portion above the backfill level 10 is demolished and removed, and a floor and a beam of a new underground skeleton are installed immediately above the backfill level 10. The part of the new underground skeleton above the floor and the beam is constructed by an ordinary basement construction method, while the part of the new underground skeleton below the floor and the beam is constructed by an inverted construction method.
【課題】コスト削減や工期短縮を図ることができる既存地下躯体の解体を伴う新設地下躯体の施工方法を提供する。【解決手段】既存地下躯体１１の外壁１３の内側に外壁１３と対向する仮設壁４を既存地下躯体１１の全層にわたって設けるとともに、仮設壁４と交差する向きの控え壁５を設け、仮設壁４と外壁１３との間に流動化土６を充填し、既存地下躯体１１の高さ方向の中間部に位置する埋戻しレベル１０まで埋戻しを行う。既存地下躯体１１のうちの仮設壁４の内側かつ埋戻しレベル１０よりも上方の部分を解体して撤去し、外壁１３を解体して外壁１３が設けられていた領域近傍に山留壁を設ける。埋戻しレベル１０よりも上方の部分を解体して撤去し、埋戻しレベル１０の直上の新設地下躯体の床および梁を設け、この床および梁よりも上側の部分では、順打ち工法で新設地下躯体の施工を行い、下側の部分では、逆打ち工法で新設地下躯体の施工を行う。【選択図】図５
CONSTRUCTION METHOD FOR NEW UNDERGROUND SKELETON, ACCOMPANIED BY DEMOLITION OF EXISTING UNDERGROUND SKELETON
既存地下躯体の解体を伴う新設地下躯体の施工方法
INOUE SHINSUKE (author) / NOMURA SHIGETAKA (author) / KISHIDA SATORU (author)
2015-07-06
Patent
Electronic Resource
Japanese
DEMOLITION METHOD OF UNDERGROUND SKELETON, AND HOLDING STRUCTURE OF OUTER WALL
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