A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Open caisson construction method suitable for silt soft soil foundation and high underground water level
The invention relates to an open caisson construction method suitable for the slit soft soil foundation and the high underground water level. An open caisson adopts a circular open caisson, and the construction steps are as follows: S1, measuring and positioning are carried out; S2, basic leveling and tamping are carried out; S3, a waterproof curtain is built; S4, cement mixing pile support is built; S5, open caisson blade feet and the well wall are built on the cement mixing pile support; S6, open caisson sinking is carried out, cement stirring pile support is cut off segment by segment in the sinking process and dug out, and the open caisson gradually sinks; and S7, bottom sealing is carried out, when the sinking well sinks to the height which is 0.1 m higher than the designed elevation,soil digging and water pumping in the well are stopped, the sinking well is enabled to sink to or approach the designed elevation under the action of the dead weight, and after sinking and stabilizing, open caisson bottom sealing can be carried out. According to the open caisson construction method suitable for the slit soft soil foundation and the high underground water level, the waterproof curtain and the cement stirring pile support are built, the eccentric and uneven settlement of the open caisson can be prevented, the pressure of the lateral slit soft soil is resisted, and collapse anda large amount of water inrush are prevented.
本发明涉及一种适用于淤泥质软土地基、高地下水位的沉井施工方法，沉井采用圆形沉井，施工步骤为：S1测量定位：S2基础平整夯实：S3建造防水帷幕；S4建造水泥搅拌桩支撑；S5：水泥搅拌桩支撑上建造沉井刃脚及井壁：S6沉井下沉，在下沉的过程中逐段切断挖出水泥搅拌桩支撑，使沉井逐渐下沉；S7封底，当沉井下沉到距设计高0.1m时，应停止井内挖土和抽水，使其靠自重下沉至设计或接近设计标高，下沉稳定后，即可进行沉井封底。本发明通过建造防水帷幕和水泥搅拌桩支撑，能防止沉井偏心和不均匀沉降，抵抗侧向淤泥土压力，防止坍塌及大量涌水。
Open caisson construction method suitable for silt soft soil foundation and high underground water level
The invention relates to an open caisson construction method suitable for the slit soft soil foundation and the high underground water level. An open caisson adopts a circular open caisson, and the construction steps are as follows: S1, measuring and positioning are carried out; S2, basic leveling and tamping are carried out; S3, a waterproof curtain is built; S4, cement mixing pile support is built; S5, open caisson blade feet and the well wall are built on the cement mixing pile support; S6, open caisson sinking is carried out, cement stirring pile support is cut off segment by segment in the sinking process and dug out, and the open caisson gradually sinks; and S7, bottom sealing is carried out, when the sinking well sinks to the height which is 0.1 m higher than the designed elevation,soil digging and water pumping in the well are stopped, the sinking well is enabled to sink to or approach the designed elevation under the action of the dead weight, and after sinking and stabilizing, open caisson bottom sealing can be carried out. According to the open caisson construction method suitable for the slit soft soil foundation and the high underground water level, the waterproof curtain and the cement stirring pile support are built, the eccentric and uneven settlement of the open caisson can be prevented, the pressure of the lateral slit soft soil is resisted, and collapse anda large amount of water inrush are prevented.
本发明涉及一种适用于淤泥质软土地基、高地下水位的沉井施工方法，沉井采用圆形沉井，施工步骤为：S1测量定位：S2基础平整夯实：S3建造防水帷幕；S4建造水泥搅拌桩支撑；S5：水泥搅拌桩支撑上建造沉井刃脚及井壁：S6沉井下沉，在下沉的过程中逐段切断挖出水泥搅拌桩支撑，使沉井逐渐下沉；S7封底，当沉井下沉到距设计高0.1m时，应停止井内挖土和抽水，使其靠自重下沉至设计或接近设计标高，下沉稳定后，即可进行沉井封底。本发明通过建造防水帷幕和水泥搅拌桩支撑，能防止沉井偏心和不均匀沉降，抵抗侧向淤泥土压力，防止坍塌及大量涌水。
Open caisson construction method suitable for silt soft soil foundation and high underground water level
一种适用于淤泥质软土地基、高地下水位的沉井施工方法
ZHANG KAI (author) / XU PING (author) / LU HANGXIAN (author) / LUO YINI (author) / LI PENGYANG (author) / LIU XINRAN (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Open caisson method for rotational flow well in high-water-level silt foundation soil
| European Patent Office | 2023
Replacement type open caisson construction method suitable for soft foundation
| European Patent Office | 2020
Construction method for reinforcing deep and thick silt stratum open caisson foundation pit
| European Patent Office | 2021
Open caisson type soft soil foundation and soft soil foundation reinforcing method
| European Patent Office | 2022