交岔隧道稳定性的有限元分析

Stability analysis of crossing tunnel using FEM

以深溪沟水电站改线公路交岔隧道为例,研究了复杂隧洞结构的稳定性分析和设计优化。介绍了非线性有限元对复杂隧洞结构模拟时的关键技术,包括地应力的回归、衬砌支护的模拟和锚杆支护作用的模拟等。分析了有限元的计算结果,为工程的安全性做了评估,对初步设计提出了修改意见,从而为工程设计提供了理论依据。

The stability and design optimization of complicated tunnel stiucture are studied with a practical case at Shenxigou Power Station. Some key techniques in non - linear FEM simulation of complicated tunnel are introduced, including the regression analysis of geo - stress, and the simulations of concrete lining and anchor rod support. Through result analysis, the safety of the project is evaluated, and the suggestions on the initial design are put forward to provide theoretical basis for engineering design.