摘要
为了减少基坑开挖引起地铁隧道的位移,采用影响较小的大面积深层搅拌桩加固,但在变形要求控制十分严格的运营地铁隧道两侧进行深层搅拌桩施工会对隧道产生很大的影响。通过考虑隧道等效刚度,推导出深层搅拌桩施工对邻近隧道变形的计算方法,并将上海某工程实例的实测结果与计算结果进行比较,同时提出了控制隧道隆起的措施。
To reduce the displacement of subway tunnels due to the excavation, deep-mixing-piles ground treatment method which induces little influence of subway tunnel, is adopted in many projects. However, it will produce serious influence on tunnel due to the construction of deep-mixing-pile at both sides of running subway tunnel, of which deformation control is very rigorous. The deformation computation method of adjacent tunnel is deduced in view of the influence of deep-mixing-pile construction and the tunnel＇ s equivalent stiffness, and the computation results are compared with the actual measurement ones of an engineering example in Shanghai. Meanwhile, the measures of controlling tunnel blowups are put forward.
出处
《建筑结构》
CSCD
北大核心
2007年第11期36-38,共3页
Building Structure
关键词
深层搅拌桩
地铁隧道
等效刚度
隆起
deep-mixing-pile
subway tunnel
equivalent stiffness
blowup
