基于总安全系数法的甬舟铁路支护参数优化与试验研究
OPTIMIZATION AND EXPERIMENTAL STUDY OF SUPPORTING PARAMETERS OF YONGZHOU RAILWAY BASED ON TOTAL SAFETY FACTOR METHOD
邓立群 1牛野1
作者信息
- 1. 中铁第四勘察设计院集团有限公司,武汉 430063
- 折叠
摘要
为解决传统复合式衬砌设计方法难以统一评价整体支护结构安全性的问题,结合支护参数优化理论和甬舟铁路实际工况,选取一个典型计算断面,采用数值模拟和总安全系数法对在不同围岩级别工况下优化后的支护参数进行安全性分析.结果表明,优化后的支护参数均满足安全性要求,说明总安全系数法用于支护参数的精细优化是可行的.
Abstract
In order to solve the problem that traditional composite lining design method is difficult to evaluate the safety of the overall support structure uniformly,combined with the support parameter optimisation theory and the actual working conditions of Yongzhou railway,a typical calculation section is selected,and numerical simulation and the total safety coefficient method are adopted to analyse the safety of the optimised support parameters under the working conditions of different peripheral rock levels.The results show that the optimised support parameters meet the safety requirements,indicating that the total safety coefficient method is feasible to be used for the fine optimisation of support parameters.
关键词
铁路隧道/复合式衬砌/总安全系数法/支护参数优化Key words
railway tunnel/composite lining/total safety factor method/support parameter optimization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据