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Construction method for shallow overburden hard-based rock deep water deep foundation pit combined cofferdam
The invention discloses a construction method for a shallow overburden hard-based rock deep water deep foundation pit combined cofferdam. The construction method comprises the following steps of 1) preparation before construction, 2) cofferdam construction, 3) water stop layer construction, 4) preparation before hoisting and lowering of an inner supporting frame assembly, 5) lowering construction of the inner supporting frame assembly, 6) first inner supporting frame construction, 7) second inner supporting frame construction, 8) third inner supporting frame construction, and 9) fourth inner supporting frame construction. By adopting the construction scheme that a combined pile formed by combining a steel pipe pile and a steel sheet pile is adopted, the combined pile and the steel sheet pile are firstly inserted into a rock stratum surface to be fixed, then holes are drilled in the steel pipe pile, concrete is poured into the holes to form an anchoring pile, a water stop layer is manufactured at the junction of the steel pipe pile and the anchoring pile, and the inner supporting frame is lowered to be fixed, rapid construction and hole forming are achieved, the rock entering depth of the steel sheet pile is reduced, hole forming slurry in the steel pipe pile does not flow out, and the effect of effectively protecting the river water body environment is achieved.
本发明公开了用于浅覆盖层硬基岩深水深基坑组合式围堰的施工方法，包括如下步骤：1)施工前的准备；2)围堰施工；3)止水层施工；4)内撑架组件吊装下放前的准备；5)内撑架组件下放施工；6)第一道内撑架施工；7)第二道内撑架施工；8)第三道内撑架施工；9)第四道内撑架施工。通过采用钢管桩和钢板桩组合而成的组合桩，先将组合桩和钢板桩插打到岩层面固定，再将钢管桩内钻孔浇筑混凝土形成锚固桩，在钢管桩与锚固桩的交界处制作止水层，下放内撑架固定的施工方案，实现了快速施工、成孔，减少钢板桩的入岩深度，钢管桩内成孔泥浆不外流，有效保护河流水体环境的效果。
Construction method for shallow overburden hard-based rock deep water deep foundation pit combined cofferdam
The invention discloses a construction method for a shallow overburden hard-based rock deep water deep foundation pit combined cofferdam. The construction method comprises the following steps of 1) preparation before construction, 2) cofferdam construction, 3) water stop layer construction, 4) preparation before hoisting and lowering of an inner supporting frame assembly, 5) lowering construction of the inner supporting frame assembly, 6) first inner supporting frame construction, 7) second inner supporting frame construction, 8) third inner supporting frame construction, and 9) fourth inner supporting frame construction. By adopting the construction scheme that a combined pile formed by combining a steel pipe pile and a steel sheet pile is adopted, the combined pile and the steel sheet pile are firstly inserted into a rock stratum surface to be fixed, then holes are drilled in the steel pipe pile, concrete is poured into the holes to form an anchoring pile, a water stop layer is manufactured at the junction of the steel pipe pile and the anchoring pile, and the inner supporting frame is lowered to be fixed, rapid construction and hole forming are achieved, the rock entering depth of the steel sheet pile is reduced, hole forming slurry in the steel pipe pile does not flow out, and the effect of effectively protecting the river water body environment is achieved.
本发明公开了用于浅覆盖层硬基岩深水深基坑组合式围堰的施工方法，包括如下步骤：1)施工前的准备；2)围堰施工；3)止水层施工；4)内撑架组件吊装下放前的准备；5)内撑架组件下放施工；6)第一道内撑架施工；7)第二道内撑架施工；8)第三道内撑架施工；9)第四道内撑架施工。通过采用钢管桩和钢板桩组合而成的组合桩，先将组合桩和钢板桩插打到岩层面固定，再将钢管桩内钻孔浇筑混凝土形成锚固桩，在钢管桩与锚固桩的交界处制作止水层，下放内撑架固定的施工方案，实现了快速施工、成孔，减少钢板桩的入岩深度，钢管桩内成孔泥浆不外流，有效保护河流水体环境的效果。
Construction method for shallow overburden hard-based rock deep water deep foundation pit combined cofferdam
用于浅覆盖层硬基岩深水深基坑组合式围堰的施工方法
LIAO YUNZHAO (author) / ZHENG ZHEN (author) / WANG JIE (author) / CHEN YANG (author) / RONG MIN (author) / LAN QIAOXIN (author) / ZHANG FENG (author) / DENG XIAOFENG (author)
2021-12-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Seepage Flow Analysis of Cofferdam in Deep Overburden Foundation
| Trans Tech Publications | 2013
Seepage Flow Analysis of Cofferdam in Deep Overburden Foundation
| Tema Archive | 2013
| European Patent Office | 2023
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