摘要
地质较差地段的隧道施工一般采用CRD工法,进行二次模筑前要对临时支撑进行拆除,拆除顺序对隧道衬砌的受力影响较大.在对CRD工法施工过程进行数值计算的基础上,分析围岩及衬砌结构的内力,并按不同顺序对临时支撑拆除进行了变形计算,通过计算结果分析了临时支撑的拆除顺序.
The CRD methods are always used to excavate the tunnel when the geological is poor. We need to remove the temporary timbering for constructing the second lining, but the removal sequence will greatly affect the force of the tunnel lining. In this paper, the proceeding of tunnel excavation is numerically simulated with CRD methods, and the temporary timbering removal is numerically simulated with different sequences. A best removal sequence for the construction is suggested based on the calculating results.
出处
《南昌工程学院学报》
CAS
2010年第3期17-19,59,共4页
Journal of Nanchang Institute of Technology
基金
江西省教育厅科学技术研究项目(GJJ09371)
关键词
CRD工法
隧道支护
临时支撑
CRD excavation methods
tunnel lining
temporary timbering
