摘要
地下连续墙在基槽开挖前通常需进行槽壁加固。随着地连墙开挖深度增加,穿越地层条件更为复杂,槽壁加固措施尤为重要。对工程中常用的水泥搅拌桩、高压旋喷桩及压密注浆法三种槽壁加固措施进行对比分析,利用数值方法对槽壁加固进行仿真模拟,分析不同加固条件下地层变形规律。针对苏州地铁5号线某基坑地连墙工程,对地连墙施工诱发地层变形进行数值模拟,通过与现场实测对比研究发现,槽壁加固能很好抑制地层变形,有效降低施工对周边地层扰动。
The ground improvement is carried out before the excavation during diaphragm wall installation.It has been seen that ground improvement move.In this research,comparison with respect to the ground improvement measures including soilcement mixing,jet grouting and compaction grouting are carried out to discuss the applicability and economics.The reinforcement effect is numerical analyzed.With respect to the diaphragm wall project in Suzhou metro line 5,the soil movement induced by the wall installation is investigated by numerical analysis.As compared to the field measurement,the ground improvement effectively inhabits the soil move and alleviates the disturbance induced by the diaphragm wall installation.
作者
朱宁
吴奔
陈秀鸣
沈伟
ZHU Ning;WU Ben;CHEN Xiuming;SHEN Wei(Suzhou Rail Transit Group,Suzhou,Jiangsu 215000,China;School of Rail Transportation,Soochow University,Suzhou,Jiangsu 215000,China)
出处
《施工技术》
CAS
2019年第S01期1-6,共6页
Construction Technology
基金
软弱土与环境土工教育部重点实验室(浙江大学)开放基金(2017P05)
苏州市2018年度第十六批科技发展计划(民生科技)项目(SS201831)
大学生创新训练计划项目(201710285051Z).
关键词
地下连续墙
槽壁加固
地层变形
数值分析
diaphragm wall
ground improvement
soil movement
numerical analysis
