华东交通大学学报Issue(1)：23-29,7.
地铁振动荷载作用下土体动剪应力分析
Analysis of Dynamic Shear Stress of Soil Around the Tunnel under Subway Vibration Load
贺腾飞 1周顺华 1徐司慧1
作者信息
- 1. 同济大学道路与交通工程教育部重点实验室，上海201804
- 折叠
摘要
Abstract
Based on the large-diameter shield tunnel of cross-river part of Line Subway 10 in Nanjing, this study researches the law of dynamic shear stress of soil around the tunnel under subway train loading. The wheel-rail coupling model is adopted to calculate the wheel-rail force, which is used as the input load. Finite element method is adopted to analyze dynamic shear stress change of soil around tunnel under subway train loading in the working conditions of single-train and double-train passing and punching-shear segment before and after scouring. Results show that dynamic shear stress is greater near the tunnel haunch and under the bottom, and changes little with the train passing. The dynamic shear stress distributes unsymmetrically during single-train passing, reaching a lower value in punching-shear segment with the decrease rate of about 17% while increasing 80%near the tunnel haunch after scouring.关键词
地铁列车/振动荷载/大直径盾构隧道/动剪应力Key words
subway train/vibration load/large-diameter shield tunnel/dynamic shear stress分类
交通工程引用本文复制引用
贺腾飞,周顺华,徐司慧..地铁振动荷载作用下土体动剪应力分析[J].华东交通大学学报,2016,(1):23-29,7.
