Three-dimensional elastic dynamic response of close crisscross tunnels subjected to subway loading

BAI Bing; LI Chun-feng

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Three-dimensional elastic dynamic response of close crisscross tunnels subjected to subway loading

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- Three-dimensional elastic dynamic response of close crisscross tunnels subjected to subway loading
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  北京交通大学土木建筑工程学院,北京,100044
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU435
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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BAI Bing, LI Chun-feng. Three-dimensional elastic dynamic response of close crisscross tunnels subjected to subway loading[J]. 2007, 28(S1).
DOI：

BAI Bing, LI Chun-feng. Three-dimensional elastic dynamic response of close crisscross tunnels subjected to subway loading[J]. 2007, 28(S1). DOI：

摘要

通过数值计算方法研究了地铁列车振动荷载作用下，由左右平行隧道过渡到上下平行隧道情形下的三维弹性动力响应。建议了三维情形下列车动力荷载的施加方式，对隧道结构变形特征以及振动加速度响应特征进行研究。计算表明，在拱底中央位置处，模型中部断面的位移峰值比起始段的位移峰值有一定减小，而其加速度峰值则变化不大；双列列车交会动载作用下的位移峰值比单行动载作用下的位移峰值要大，而相应的峰值加速度则出现得要早。

Abstract

Three-dimensional elastic dynamic responses surrounding subway tunnels subjected to subway dynamic loading are studied by numerical method. This paper considers the case that two left-right parallel tunnels transform into two up-down parallel tunnels. For this

a method of applying subway dynamic loading is proposed firstly

and then the dynamic response characteristics such as deformation and acceleration values etc. are analyzed. Calculation results show that at the middle position of the arch bottom of the tunnel

the peak displacement in the middle section of the tunnel is smaller than the peak displacement in the end section. However

the acceleration value has small changes. Besides

the peak displacement under the action of two cross subways is greater than the peak displacement under the action of single subway

and the peak acceleration is advanced.

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