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CONSTRUCTION METHOD OF UNDERGROUND CONTINUOUS WALL AND UNDERGROUND CONTINUOUS WALL
PROBLEM TO BE SOLVED: To provide a construction method or the like of an underground continuous wall which allows easy ground excavation and skeleton construction at the construction of an underground structure.SOLUTION: Concrete 31 is placed into an excavation groove 20 formed at the ground by inserting a reinforced cage 100a into the excavation groove, and a preceding element 301a of an underground continuous wall is constructed. After that, a reinforced cage 200 is inserted into an excavation groove formed at a sideway of the preceding element 301, the concrete 31 is placed therein, a succeeding element 302 of the underground continuous wall is constructed, thus constructing the underground continuous wall so that a lower end reaches a depth exceeding a water non-permeable layer of the ground. At this time, a block part 23 is formed by injecting an injection material into a clearance 22 of a corner part of the preceding element 301 of the underground continuous wall at a depth reaching at least the water non-permeable layer by using an injection pipe 120 which is arranged in the vicinity of the corner part of the reinforced cage 100a. By this constitution, it is prevented that water leakage occurs due to the clearance 22 which becomes a water passage in a vertical direction, and hindrance occurs at the ground excavation and the skeleton construction at the construction of an underground structure.SELECTED DRAWING: Figure 3
【課題】地下構造物の構築時の地盤掘削や躯体構築が容易に行えるようになる地中連続壁の構築方法等を提供する。【解決手段】地盤に形成された掘削溝２０に鉄筋籠１００ａを挿入してコンクリート３１を打設し、地中連続壁の先行エレメント３０１ａを構築する。その後、先行エレメント３０１ａの側方に形成された掘削溝に鉄筋籠２００を挿入してコンクリート３１を打設し地中連続壁の後行エレメント３０２ａを構築することで、下端が地盤の不透水層を越える深さに達するように地中連続壁を構築する。この際、鉄筋籠１００ａの隅部近傍に設けられた注入管１２０を利用して、少なくとも不透水層に対応する深さで、地中連続壁の先行エレメント３０１ａの隅部の隙間２２に注入材を注入して閉塞部２３とする。これにより、当該隙間２２が鉛直方向の水道となって漏水が起こり、地下構造物の構築時の地盤掘削や躯体構築の支障となるのを防ぐ。【選択図】図３
CONSTRUCTION METHOD OF UNDERGROUND CONTINUOUS WALL AND UNDERGROUND CONTINUOUS WALL
PROBLEM TO BE SOLVED: To provide a construction method or the like of an underground continuous wall which allows easy ground excavation and skeleton construction at the construction of an underground structure.SOLUTION: Concrete 31 is placed into an excavation groove 20 formed at the ground by inserting a reinforced cage 100a into the excavation groove, and a preceding element 301a of an underground continuous wall is constructed. After that, a reinforced cage 200 is inserted into an excavation groove formed at a sideway of the preceding element 301, the concrete 31 is placed therein, a succeeding element 302 of the underground continuous wall is constructed, thus constructing the underground continuous wall so that a lower end reaches a depth exceeding a water non-permeable layer of the ground. At this time, a block part 23 is formed by injecting an injection material into a clearance 22 of a corner part of the preceding element 301 of the underground continuous wall at a depth reaching at least the water non-permeable layer by using an injection pipe 120 which is arranged in the vicinity of the corner part of the reinforced cage 100a. By this constitution, it is prevented that water leakage occurs due to the clearance 22 which becomes a water passage in a vertical direction, and hindrance occurs at the ground excavation and the skeleton construction at the construction of an underground structure.SELECTED DRAWING: Figure 3
【課題】地下構造物の構築時の地盤掘削や躯体構築が容易に行えるようになる地中連続壁の構築方法等を提供する。【解決手段】地盤に形成された掘削溝２０に鉄筋籠１００ａを挿入してコンクリート３１を打設し、地中連続壁の先行エレメント３０１ａを構築する。その後、先行エレメント３０１ａの側方に形成された掘削溝に鉄筋籠２００を挿入してコンクリート３１を打設し地中連続壁の後行エレメント３０２ａを構築することで、下端が地盤の不透水層を越える深さに達するように地中連続壁を構築する。この際、鉄筋籠１００ａの隅部近傍に設けられた注入管１２０を利用して、少なくとも不透水層に対応する深さで、地中連続壁の先行エレメント３０１ａの隅部の隙間２２に注入材を注入して閉塞部２３とする。これにより、当該隙間２２が鉛直方向の水道となって漏水が起こり、地下構造物の構築時の地盤掘削や躯体構築の支障となるのを防ぐ。【選択図】図３
CONSTRUCTION METHOD OF UNDERGROUND CONTINUOUS WALL AND UNDERGROUND CONTINUOUS WALL
地中連続壁の構築方法、地中連続壁
YASUNAGA MASAMICHI (author)
2017-12-07
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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