摘要
深基坑施工会引起周边道路开裂和临近构筑物沉降,如果变形过大会影响构筑物正常使用。以某临近地铁隧道深基坑施工为例,分析了降低承压水头和分坑法施工对减小土体位移的作用。结果表明通过数值模拟对比分析了不同围护结构对土体位移的影响,优化了围护结构方案;采用分坑施工方法减小了围护结构和临近构筑物变形;存在承压水的情况下,通过降低地下水位防止基坑突涌。施工中采取的技术措施为今后临近构筑物深基坑施工提供了一定的参考。
The construction of deep foundation pit will cause the surrounding road cracking and settlement of adjacent structures.If the deformation is too large,it will affect the normal use of structures.Taking the deep foundation pit construction of a nearby subway tunnel as an example,this paper analyzes the effect of reducing the confined water head and dividing the pit method on reducing the soil displacement.The results show that the effect of different enclosure structures on soil displacement is compared and analyzed by numerical simulation,and the enclosure structure scheme is optimized.The use of pit division construction method reduces the deformation of the enclosure structure and adjacent structures.The presence of confined water prevents crushing of soil and water by reducing the groundwater level.The technical measures taken in the construction provide some reference for the construction of deep foundation pits of adjacent structures.
作者
李向阳
金成
魏达
叶科
LI Xiangyang;JIN Cheng;WEI Da;YE Ke(Hangzhou Shangcheng District Construction Project Quality And Safety Supervision Station,Hangzhou 310020,China;Zhejiang University of Technology Engineering Design Group Co.,Ltd.,Hangzhou 310014,China;Zhejiang Construction Engineering Group Co.,Ltd.,Hangzhou 310012,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310012,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S01期2527-2530,共4页
Building Structure
关键词
超深基坑
临近构筑物
承压水
分坑施工
围护结构变形
deep excavation
adjacent structures
confined water
pit division construction
envelope distortion
作者简介
第一作者:李向阳,学士,高级工程师,Email:13795291@qq.com。
