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A platform for research: civil engineering, architecture and urbanism
Water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method
The invention discloses a water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method, and relates to the technical field of underground structure engineering construction. The water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method comprises a ground, a first underground layer, a second underground layer and a third underground layer; the construction method comprises the following construction steps that a first-stage underground diaphragm wall, uplift piles and main body structure columns are constructed from the ground; a first underground layer of earthwork is excavated in a sloping mode; an underground first-layer annular plate is constructed at the bottom of the underground first layer, wherein the underground first-layer annular plate comprises an underground first-layer plate and an annular hole; underground second-layer earthwork is excavated; an underground second-layer floor is constructed at the bottom of the underground second layer; a secondary underground diaphragm wall, an uplift pile and a main body structure column are constructed below the underground second-layer floor; and underground three-layer earthwork is excavated. The construction method combining basin-type excavation of the water-rich large foundation pit with cover-excavation top-down construction is adopted, supports are replaced by plates, deformation control of an enclosure structure is effectively guaranteed, meanwhile, mounting and dismounting of a large number of reinforced concrete supports are reduced, and cost is effectively saved.
本发明公开一种富水深大基坑盆式开挖结合盖挖逆作施工方法，涉及地下结构工程施工技术领域，一种富水深大基坑盆式开挖结合盖挖逆作施工方法，包括地面，地下一层地下二层和地下三层，包括如下施工步骤：从地面施作一级地下连续墙、抗拔桩和主体结构柱；放坡开挖地下一层土方；在地下一层底部施作地下一层环板，所述地下一层环板包括地下一层板和环孔；开挖地下二层土方；在地下二层底部施作地下二层地板；在地下二层地板下方，施工二级地下连续墙、抗拔桩和主体结构柱；开挖地下三层土方。采用富水深大基坑盆式开挖结合盖挖逆作施工方法以板代撑，围护结构变形控制得到有效保证，同时减少大量钢筋混凝土支撑安装拆除，有效地节省了成本。
Water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method
The invention discloses a water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method, and relates to the technical field of underground structure engineering construction. The water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method comprises a ground, a first underground layer, a second underground layer and a third underground layer; the construction method comprises the following construction steps that a first-stage underground diaphragm wall, uplift piles and main body structure columns are constructed from the ground; a first underground layer of earthwork is excavated in a sloping mode; an underground first-layer annular plate is constructed at the bottom of the underground first layer, wherein the underground first-layer annular plate comprises an underground first-layer plate and an annular hole; underground second-layer earthwork is excavated; an underground second-layer floor is constructed at the bottom of the underground second layer; a secondary underground diaphragm wall, an uplift pile and a main body structure column are constructed below the underground second-layer floor; and underground three-layer earthwork is excavated. The construction method combining basin-type excavation of the water-rich large foundation pit with cover-excavation top-down construction is adopted, supports are replaced by plates, deformation control of an enclosure structure is effectively guaranteed, meanwhile, mounting and dismounting of a large number of reinforced concrete supports are reduced, and cost is effectively saved.
本发明公开一种富水深大基坑盆式开挖结合盖挖逆作施工方法，涉及地下结构工程施工技术领域，一种富水深大基坑盆式开挖结合盖挖逆作施工方法，包括地面，地下一层地下二层和地下三层，包括如下施工步骤：从地面施作一级地下连续墙、抗拔桩和主体结构柱；放坡开挖地下一层土方；在地下一层底部施作地下一层环板，所述地下一层环板包括地下一层板和环孔；开挖地下二层土方；在地下二层底部施作地下二层地板；在地下二层地板下方，施工二级地下连续墙、抗拔桩和主体结构柱；开挖地下三层土方。采用富水深大基坑盆式开挖结合盖挖逆作施工方法以板代撑，围护结构变形控制得到有效保证，同时减少大量钢筋混凝土支撑安装拆除，有效地节省了成本。
Water-rich-depth large foundation pit basin-type excavation combined cover-excavation top-down construction method
一种富水深大基坑盆式开挖结合盖挖逆作施工方法
GAO CHAORAN (author)
2021-12-24
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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