摘要
以兰州地铁2号线一期工程某区间段地铁盾构为例,在详细研究该区段工程地质条件和地铁主要设计参数的基础上,采用MIDAS-GTS有限元软件对地铁盾构过程中周边围岩及地层表面变形进行了数值模拟,研究了地铁盾构对临近建筑物基础的影响.数值模拟结果表明,建筑物基础左侧桩体受盾构掘进影响较大,应采取有效的变形控制技术来保证地铁安全施工,避免工程事故的发生.
This article takes the subway shield of Lanzhou subway 2 line as an example, illustrates the geological engineering condition and the main subway design paramenters, simulates the deformation in the surrounding are-as of the subway shield with MIDAS-GTS finite element software to study the subway shield influence on the foun-dation of the surrounding buildings. The results indicated that the left side of the pile clobody of building founda-tion is greatly influenced, so that the effective distortion control technology should be adopted to guarantee the safe subway construction and avoid the project accident.
出处
《兰州工业学院学报》
2016年第2期34-37,49,共5页
Journal of Lanzhou Institute of Technology
关键词
地铁盾构
围岩变形
临近建筑物
桩基础
数值模拟
subway shield
adjacent formation distortion
surrounding buildings
pile foundation
numerical simulation