期刊论文

Upper bound analysis of horizontal yield acceleration for a side slope containing tunnel

Niu, J.

中文

振动与冲击

1000-3835

2019

38

9

133-139,165

10.13465/j.cnki.jvs.2019.09.018

51204215:国家自然科学基金 51404309:国家自然科学基金

本校为第一且通讯机构

基于拟静力法和强度折减法,采用极限分析上限定理,推导了含隧道边坡在地震作用下的水平屈服加速度系数的上限解,该上限解考虑了隧道对边坡的影响。分别计算了边坡设计参数、岩土体的抗剪强度、浅埋偏压隧道设计参数等因素影响下边坡的水平屈服加速度系数极限值。根据正交试验法,给出了地震作用下含隧道边坡水平屈服加速度系数对各因素的敏感性大小。研究表明:边坡高度、坡角、岩土体黏聚力以及强度折减系数对水平屈服加速度系数的敏感性和影响程度均较大,而隧道距坡脚距离、隧道半径以及水平和竖向地震力比例系数的敏感性和影响程度则较小。

Based on the pseudo-static method and the strength reduction technique, the upper bound theorem of limit analysis was used to derive the upper bound solution to the horizontal yield acceleration coefficient of a side slope containing tunnel under earthquakes considering effects of tunnel on the side slope. Limit values of the side slope's yield acceleration coefficient were computed, respectively under influences of side slope design parameters, shear strength of rock and soil, and shallow buried bias tunnel's design parameters. Sensitivity val...