摘要
以乌鲁木齐地铁1号线三-新区间大断面隧道为例,采用MIDAS/GTS有限元软件,针对CD法、CRD法、双侧壁导洞法等3种工法分别进行数值计算。以对比分析不同工法下围岩变形、应力、塑性区及地表沉降规律。研究结果表明,采用CD法产生的地表沉降最大,CRD法施工可以有效减小隧道拱腰、拱肩处的水平变形,相对来说双侧壁导洞法能够有效控制拱顶沉降。
This paper takes the large section tunnel of Urumqi Metro Line 1 San-Xin district as an example,using MIDAS/GTS finite element software,the calculation for the CD method,CRD method and double heading method three kinds of numerical method respectively. The deformation,stress,plastic zone and surface subsidence law of surrounding rock under different work methods are compared and analyzed. The results show that the surface generated by CD method of settlement,the construction of the CRD method can effectively reduce the tunnel arch waist and arch shoulder horizontal deformation,relatively double wall pilot method can effectively control the settlement of vault.
出处
《施工技术》
CAS
2018年第S1期876-879,共4页
Construction Technology
基金
中国铁建大桥工程局集团有限公司乌鲁木齐市轨道交通1号线工程02标段项目
关键词
浅埋隧道
大段面
数值模拟
工法优化
shallow buried tunnel
large section
numerical simulation
optimization of engineering method
