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A platform for research: civil engineering, architecture and urbanism
Foundation pit support underground continuous composite wall micro-disturbance construction method under complex working conditions
The invention provides a foundation pit support underground continuous composite wall micro-disturbance construction method under complex working conditions, which comprises the following steps of: constructing a stand column pile by adopting a cast-in-situ bored pile and adopting a section steel latticed column as a stand column latticed column; the three-shaft mixing pile groove wall reinforcement and the passive soil reinforcement are synchronously constructed; high-pressure jet grouting pile reinforcing construction is conducted, and pit edge passive soil reinforcing and pit interior reinforcing are conducted through high-pressure jet grouting piles; the construction method comprises the steps of underground diaphragm wall construction, surveying and setting-out, guide wall construction, slurry preparation, groove section excavation, foundation cleaning, reinforcement cage hoisting and placing, fore shaft pipe hoisting and placing, concrete pouring and fore shaft pipe pulling out. According to the construction method, combined construction of multiple technologies such as three-axis jet grouting construction, underground diaphragm wall construction, cast-in-place pile construction, stand column pile construction and high-pressure jet grouting pile construction is adopted, the construction period is effectively shortened, the unsupported exposure time of a foundation pit is shortened, the construction difficulty and risk are reduced, the grooving perpendicularity stability in underground diaphragm wall construction is well controlled, and the construction quality under the complex working condition is improved.
本发明提供一种复杂工况条件下基坑围护地下连续复合墙微扰动施工方法，包括以下步骤：立柱桩施工，采用钻孔灌注桩，立柱格构柱采用型钢格构柱；三轴搅拌桩槽壁加固及被动土加固同步施工；高压旋喷桩加固施工，坑边被动土加固及坑内加固采用高压旋喷桩加固；地下连续墙施工，测量放线、导墙施工、泥浆配制、槽段开挖、清基、钢筋笼吊放、锁口管吊放、砼浇筑、锁口管拔出；本发明采用三轴旋喷施工、地下连续墙施工、灌注桩、立柱桩、高压旋喷桩等多项工艺组合施工，有效缩短工期，减小基坑无支撑暴露时间，降低施工难点和风险，在地连墙施工中成槽垂直度稳定性控制良好，提高复杂工况条件下施工质量。
Foundation pit support underground continuous composite wall micro-disturbance construction method under complex working conditions
The invention provides a foundation pit support underground continuous composite wall micro-disturbance construction method under complex working conditions, which comprises the following steps of: constructing a stand column pile by adopting a cast-in-situ bored pile and adopting a section steel latticed column as a stand column latticed column; the three-shaft mixing pile groove wall reinforcement and the passive soil reinforcement are synchronously constructed; high-pressure jet grouting pile reinforcing construction is conducted, and pit edge passive soil reinforcing and pit interior reinforcing are conducted through high-pressure jet grouting piles; the construction method comprises the steps of underground diaphragm wall construction, surveying and setting-out, guide wall construction, slurry preparation, groove section excavation, foundation cleaning, reinforcement cage hoisting and placing, fore shaft pipe hoisting and placing, concrete pouring and fore shaft pipe pulling out. According to the construction method, combined construction of multiple technologies such as three-axis jet grouting construction, underground diaphragm wall construction, cast-in-place pile construction, stand column pile construction and high-pressure jet grouting pile construction is adopted, the construction period is effectively shortened, the unsupported exposure time of a foundation pit is shortened, the construction difficulty and risk are reduced, the grooving perpendicularity stability in underground diaphragm wall construction is well controlled, and the construction quality under the complex working condition is improved.
本发明提供一种复杂工况条件下基坑围护地下连续复合墙微扰动施工方法，包括以下步骤：立柱桩施工，采用钻孔灌注桩，立柱格构柱采用型钢格构柱；三轴搅拌桩槽壁加固及被动土加固同步施工；高压旋喷桩加固施工，坑边被动土加固及坑内加固采用高压旋喷桩加固；地下连续墙施工，测量放线、导墙施工、泥浆配制、槽段开挖、清基、钢筋笼吊放、锁口管吊放、砼浇筑、锁口管拔出；本发明采用三轴旋喷施工、地下连续墙施工、灌注桩、立柱桩、高压旋喷桩等多项工艺组合施工，有效缩短工期，减小基坑无支撑暴露时间，降低施工难点和风险，在地连墙施工中成槽垂直度稳定性控制良好，提高复杂工况条件下施工质量。
Foundation pit support underground continuous composite wall micro-disturbance construction method under complex working conditions
复杂工况条件下基坑围护地下连续复合墙微扰动施工方法
JI JIANGUO (author) / QIN RONGZHEN (author) / XU ZHENG (author) / CHEN FEI (author) / XU MING (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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