A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deep foundation pit supporting construction method for soft soil foundation high-confined water environment adjacent to high-speed rail
The invention discloses a deep foundation pit supporting construction method for a soft soil foundation high-confined water environment adjacent to a high-speed rail. The method includes the steps that an isolation pile is constructed between a foundation pit and the existing high-speed rail, and an underground diaphragm wall is constructed along the periphery of the foundation pit; vertical RJP construction method piles are constructed at the wall seam position of the underground diaphragm wall for water stop and reinforcement, a plurality of N-jet construction method piles are constructed at the bottom of the foundation pit to form a bottom sealing layer, and the bottom sealing layer is connected with the wall bottom of the underground diaphragm wall for bottom sealing, water insulation and reinforcement; a plurality of high-pressure jet grouting piles are constructed above the bottom sealing layer in the foundation pit to form drawing strips and skirt edges; a plurality of stand column piles are constructed in the foundation pit at intervals, and the lower ends of the stand column piles are located between the depth ranges of the bottom sealing layer and a drawing edge; and a dewatering well is constructed inside and outside the foundation pit, meanwhile, concrete pile heads of the isolation piles and the underground diaphragm wall are chiseled away manually, and crown beams of the isolation piles and the underground diaphragm wall, straining beams between the isolation piles and the underground diaphragm wall and a first concrete support in the foundation pit are constructed.
本发明公开了一种邻近高铁的软土地基高承压水环境的深基坑支护施工方法，施工方法包括以下步骤：在基坑与既有高铁之间施作隔离桩，并沿基坑四周施作地下连续墙；在各地下连续墙的墙缝位置处施作竖向的RJP工法桩进行止水加固，在基坑底部施作若干N‑jet工法桩形成封底层，封底层与地下连续墙的墙底连接以封底隔水加固；在基坑内的封底层上方施作若干高压旋喷桩以形成抽条和裙边；在基坑内间隔施作若干立柱桩，立柱桩的下端部位于封底层与抽边的深度范围之间；在基坑内外施作降水井，同时人工凿除隔离桩与地下连续墙的混凝土桩头，施工隔离桩与地下连续墙的冠梁、隔离桩与地下连续墙之间的系梁，以及基坑内的首道混凝土支撑。
Deep foundation pit supporting construction method for soft soil foundation high-confined water environment adjacent to high-speed rail
The invention discloses a deep foundation pit supporting construction method for a soft soil foundation high-confined water environment adjacent to a high-speed rail. The method includes the steps that an isolation pile is constructed between a foundation pit and the existing high-speed rail, and an underground diaphragm wall is constructed along the periphery of the foundation pit; vertical RJP construction method piles are constructed at the wall seam position of the underground diaphragm wall for water stop and reinforcement, a plurality of N-jet construction method piles are constructed at the bottom of the foundation pit to form a bottom sealing layer, and the bottom sealing layer is connected with the wall bottom of the underground diaphragm wall for bottom sealing, water insulation and reinforcement; a plurality of high-pressure jet grouting piles are constructed above the bottom sealing layer in the foundation pit to form drawing strips and skirt edges; a plurality of stand column piles are constructed in the foundation pit at intervals, and the lower ends of the stand column piles are located between the depth ranges of the bottom sealing layer and a drawing edge; and a dewatering well is constructed inside and outside the foundation pit, meanwhile, concrete pile heads of the isolation piles and the underground diaphragm wall are chiseled away manually, and crown beams of the isolation piles and the underground diaphragm wall, straining beams between the isolation piles and the underground diaphragm wall and a first concrete support in the foundation pit are constructed.
本发明公开了一种邻近高铁的软土地基高承压水环境的深基坑支护施工方法，施工方法包括以下步骤：在基坑与既有高铁之间施作隔离桩，并沿基坑四周施作地下连续墙；在各地下连续墙的墙缝位置处施作竖向的RJP工法桩进行止水加固，在基坑底部施作若干N‑jet工法桩形成封底层，封底层与地下连续墙的墙底连接以封底隔水加固；在基坑内的封底层上方施作若干高压旋喷桩以形成抽条和裙边；在基坑内间隔施作若干立柱桩，立柱桩的下端部位于封底层与抽边的深度范围之间；在基坑内外施作降水井，同时人工凿除隔离桩与地下连续墙的混凝土桩头，施工隔离桩与地下连续墙的冠梁、隔离桩与地下连续墙之间的系梁，以及基坑内的首道混凝土支撑。
Deep foundation pit supporting construction method for soft soil foundation high-confined water environment adjacent to high-speed rail
邻近高铁的软土地基高承压水环境的深基坑支护施工方法
LIU LIZHOU (author) / WANG GANG (author) / CHEN PEI (author) / WANG YUSHI (author) / CHEN HE (author) / ZHOU YIN (author) / SHENG CANJUN (author) / FENG JIANGYU (author) / LI JIANGLONG (author)
2021-08-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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