A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Micro-disturbance combined type foundation pit supporting wall and construction method thereof
The invention discloses a micro-disturbance combined type foundation pit supporting wall and a construction method thereof. The micro-disturbance combined type foundation pit supporting wall comprises steel pipe piles and cement mixing piles which are sequentially arranged at intervals. In the construction process, the steel pipe pile with the sharp bottom is inserted and pulled out in a static rotation mode, the adverse effect on the surrounding environment in the steel pipe pile pressing-in process in a conventional vibration mode can be avoided, and a soil core in the steel pipe pile can be prevented from being taken out together; welding a steel pipe on the inner side of the steel pipe pile to form a grouting hole, and inserting a steel pipe with a closed bottom end into the grouting hole to ensure that the grouting hole is not blocked by a soil body in the inserting process; before the steel pipe pile is pulled out, the steel pipe in the grouting hole is taken out, the grouting pipe is inserted, grouting is conducted while the steel pipe pile is pulled out, a gap left when the steel pipe pile is pulled out can be fully filled, and disturbance of the surrounding environment caused by soil collapse in the gap can be prevented. According to the method, the influence of construction on the surrounding environment can be controlled while the safety of the foundation pit is guaranteed.
本发明公开了一种微扰动组合型基坑支护墙及其施工方法，所述微扰动组合型基坑支护墙包括依次间隔布置的钢管桩和水泥搅拌桩。施工过程中采用静力旋转的方式插入和拔出底部锋利的钢管桩，能够避免常规的振动方式在压入钢管桩过程中对周边环境产生的不利影响，并能避免钢管桩内的土芯被一同带出；在钢管桩内侧焊接钢管形成一注浆孔，并在所述注浆孔内插入一底端封闭的钢管，以确保在插入过程中注浆孔不被土体堵塞；在拔出钢管桩之前，取出注浆孔内的钢管并插入注浆管，边拔出钢管桩边注浆，可充分填充拔除钢管桩时所留下的空隙，并能够防止空隙内土体塌落引起周边环境的扰动。本发明能够在保证基坑安全性的同时，控制施工对周边环境的影响。
Micro-disturbance combined type foundation pit supporting wall and construction method thereof
The invention discloses a micro-disturbance combined type foundation pit supporting wall and a construction method thereof. The micro-disturbance combined type foundation pit supporting wall comprises steel pipe piles and cement mixing piles which are sequentially arranged at intervals. In the construction process, the steel pipe pile with the sharp bottom is inserted and pulled out in a static rotation mode, the adverse effect on the surrounding environment in the steel pipe pile pressing-in process in a conventional vibration mode can be avoided, and a soil core in the steel pipe pile can be prevented from being taken out together; welding a steel pipe on the inner side of the steel pipe pile to form a grouting hole, and inserting a steel pipe with a closed bottom end into the grouting hole to ensure that the grouting hole is not blocked by a soil body in the inserting process; before the steel pipe pile is pulled out, the steel pipe in the grouting hole is taken out, the grouting pipe is inserted, grouting is conducted while the steel pipe pile is pulled out, a gap left when the steel pipe pile is pulled out can be fully filled, and disturbance of the surrounding environment caused by soil collapse in the gap can be prevented. According to the method, the influence of construction on the surrounding environment can be controlled while the safety of the foundation pit is guaranteed.
本发明公开了一种微扰动组合型基坑支护墙及其施工方法，所述微扰动组合型基坑支护墙包括依次间隔布置的钢管桩和水泥搅拌桩。施工过程中采用静力旋转的方式插入和拔出底部锋利的钢管桩，能够避免常规的振动方式在压入钢管桩过程中对周边环境产生的不利影响，并能避免钢管桩内的土芯被一同带出；在钢管桩内侧焊接钢管形成一注浆孔，并在所述注浆孔内插入一底端封闭的钢管，以确保在插入过程中注浆孔不被土体堵塞；在拔出钢管桩之前，取出注浆孔内的钢管并插入注浆管，边拔出钢管桩边注浆，可充分填充拔除钢管桩时所留下的空隙，并能够防止空隙内土体塌落引起周边环境的扰动。本发明能够在保证基坑安全性的同时，控制施工对周边环境的影响。
Micro-disturbance combined type foundation pit supporting wall and construction method thereof
一种微扰动组合型基坑支护墙及其施工方法
YU JIANLIN (author) / WANG JIAN (author) / ZHOU JIAJIN (author) / HUANG JIEQING (author) / ZHAN XIAOBO (author) / GUO JIN (author) / GAN XIN (author) / GONG XIAONAN (author) / WANG LUBO (author)
2022-09-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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