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Pile foundation bearing platform river-near deep foundation pit supporting system and construction method
The invention provides a pile foundation bearing platform river-near deep foundation pit supporting system and a construction method. The transverse moving direction of a sliding connecting frame is limited through a suspension cross beam, and a vertical rolling and pulling machine and a transverse rolling and pulling machine are combined to control the rolling and laying direction of a blanket rolling shaft and an anti-seepage blanket; the stability and the water level of soil outside the pit are monitored by adopting a combined monitoring pipe; a recycling mud jacking pipe and an indwellingmud jacking pipe are arranged in the soil body outside the pit, and mud jacking can be conducted to form a mud jacking solidified body; the driving direction of a steel sheet pile is limited through an outer side guide plate; in the inserting process of the steel sheet pile, pile side mud jacking body construction is conducted synchronously through the built-in mud jacking pipe; and a position adjusting jacking body can move up and down along a reinforcing supporting column, and transverse jacking force can be applied to the steel sheet pile through the position adjusting jacking body. The positions of back pressure bags are limited through bag bottom supporting plates and bag side supporting plates, extrusion force can be applied to the back pressure bags through the bag filling liquid, the stability of the foundation pit supporting structure can be improved, the anti-permeability performance of the steel sheet piles is improved, and the permeation disease treatment difficulty is reduced.
本发明提供一种桩基承台临河深基坑支护体系及施工方法,通过悬挂横梁限定滑移连接架的横移方向,组合采用竖向卷拉机和横向卷拉机控制铺盖滚轴及防渗铺盖的卷铺方向;采用组合监测管进行坑外土体稳定性和水位监测;在坑外土体内设置了回收压浆管和留置压浆管,可压浆形成压浆固化体;通过外侧导板限定钢板桩的打设方向;在钢板桩插设过程中,同步通过内置压浆管进行桩侧压浆体施工;调位顶压体可沿补强撑柱上下移动,可通过调位顶压体对钢板桩施加横向顶压力;通过囊袋底撑板和囊袋侧撑板限定反压囊袋的位置,并可通过囊袋填充液对反压囊袋施加挤压力,可提高基坑支护结构的稳定性、改善钢板桩的抗渗性能、降低渗透病害处治难度。
Pile foundation bearing platform river-near deep foundation pit supporting system and construction method
The invention provides a pile foundation bearing platform river-near deep foundation pit supporting system and a construction method. The transverse moving direction of a sliding connecting frame is limited through a suspension cross beam, and a vertical rolling and pulling machine and a transverse rolling and pulling machine are combined to control the rolling and laying direction of a blanket rolling shaft and an anti-seepage blanket; the stability and the water level of soil outside the pit are monitored by adopting a combined monitoring pipe; a recycling mud jacking pipe and an indwellingmud jacking pipe are arranged in the soil body outside the pit, and mud jacking can be conducted to form a mud jacking solidified body; the driving direction of a steel sheet pile is limited through an outer side guide plate; in the inserting process of the steel sheet pile, pile side mud jacking body construction is conducted synchronously through the built-in mud jacking pipe; and a position adjusting jacking body can move up and down along a reinforcing supporting column, and transverse jacking force can be applied to the steel sheet pile through the position adjusting jacking body. The positions of back pressure bags are limited through bag bottom supporting plates and bag side supporting plates, extrusion force can be applied to the back pressure bags through the bag filling liquid, the stability of the foundation pit supporting structure can be improved, the anti-permeability performance of the steel sheet piles is improved, and the permeation disease treatment difficulty is reduced.
本发明提供一种桩基承台临河深基坑支护体系及施工方法,通过悬挂横梁限定滑移连接架的横移方向,组合采用竖向卷拉机和横向卷拉机控制铺盖滚轴及防渗铺盖的卷铺方向;采用组合监测管进行坑外土体稳定性和水位监测;在坑外土体内设置了回收压浆管和留置压浆管,可压浆形成压浆固化体;通过外侧导板限定钢板桩的打设方向;在钢板桩插设过程中,同步通过内置压浆管进行桩侧压浆体施工;调位顶压体可沿补强撑柱上下移动,可通过调位顶压体对钢板桩施加横向顶压力;通过囊袋底撑板和囊袋侧撑板限定反压囊袋的位置,并可通过囊袋填充液对反压囊袋施加挤压力,可提高基坑支护结构的稳定性、改善钢板桩的抗渗性能、降低渗透病害处治难度。
Pile foundation bearing platform river-near deep foundation pit supporting system and construction method
桩基承台临河深基坑支护体系及施工方法
RONG HAISHENG (author) / LIANG JIA (author) / LI YAHUI (author) / LI XIONGJUN (author) / WEI MING (author) / WANG FEI (author) / JIN LIANG (author) / ZHU HONGZHENG (author) / ZHANG KUN (author) / LI ZHENGRU (author)
2021-02-05
Patent
Electronic Resource
Chinese
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