某小净距浅埋偏压隧道优化设计方法探讨

目前隧道设计主要采用工程类比法，缺乏定量标准。以改进的有限元强度折减法计算的隧道安全系数作为定量指标对某小净距偏压隧道的支护参数进行优化设计，有的放矢地对薄弱部位支护进行加强，对安全部位的支护适当减弱。优化结果表明，在工程造价节省的前提下隧道安全性能还有一定提高。对隧道的定量设计进行探索性尝试，为类似问题的解决提供基本...

Probe into Optimal Design Methods for Some Shallow Embedded Asymmetrical Loading Tunnel with Small Clear Space

As present the engineering analog method is mainly adopted in design of tunnels in the absence of quantitative criteria.This paper performs optimal design for supporting parameters of some asymmetrical loading tunnel with small clear space with safety factors for tunnels calculated by modified finite element strength reduction method as quantitative indices to reinforce the supports at weak parts on purpose and weaken the supports at safe parts.The optimized results show that the safety performance of tunne...