某高压电缆隧道顶管施工中圆形工作井的稳定性分析

Stability Analysis of the Round Working Well in a High Voltage Cable Tunnel Construction

针对某高压电缆工程的顶管圆形工作井,利用Midas-GTS有限元计算软件建立局部顶管和始发工作井的三维有限元模型,研究了管片分步顶进引起的井体水平应力和位移的分布特征,以及底板和后靠背的受力和变形性状,通过分析较好地模拟了顶管工作井的施工动态,结果表明顶进过程中井体始终处于稳定状态。

This paper use Midas-GTS finite element calculation software to establish a three-dimensional finite element model of the local pipe jacking and originating work well for the pipe jacking circular working well in a high voltage cable project. It study the distribution characteristics of horizontal stress and displacement of work well caused by pipe jacking,and the stress and deformation characteristics of the bottom plate and the rear backrest. Three dimensional finite element numerical analysis can better simulation work well for pipe jacking construction dynamics,simulation results show that the well body is always in a steady state during jacking process.