摘要
采用数值分析方法,对隧道开挖管棚支护进行了三维有限元模拟,分析了开挖进尺、钢管直径、管间距、注浆层厚度、混凝土强度、断面跨度和围岩等级因素对管棚支护的影响效果,得到了不同因素的围岩沉降位移和支护结构的内力情况。
In this paper, a 3D numerical model of pipe - shed support in tunnel construction is developed and calculated by FEM. The influence of different factors （different excavation progress, pipe diameter, pipe interval, concrete thickness, concrete intensity, cross- section size and surrounding rocks grade） to pipe - shed support was analyzed. The subsidence and displacement of surrounding rocks and intemal force of support structure were obtained.
出处
《低温建筑技术》
2007年第6期79-81,共3页
Low Temperature Architecture Technology
关键词
地下工程
管棚支护
有限元法
underground engineering
pipe- shed support
FEM
displacement
stress distribution
