| 列车动载作用下交叠隧道动力响应数值模拟 |
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| 引用本文： | 陈卫军,张璞.列车动载作用下交叠隧道动力响应数值模拟[J].岩土力学,2002,23(6):770-774. |
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| 作者姓名： | 陈卫军 张璞 |
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| 作者单位： | 同济大学地下建筑与工程系,上海,200092 |
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| 摘 要： | 采用上海地铁某区间隧道现场实测振动加速度数据，对南浦大桥近距离交叠隧道在列车振动荷载作用下的动力响应进行了有限元数值模拟。模拟结果表明：上下重叠隧道在动载作用下相互影响显著；随着隧道间净距的增加，相互影响逐渐减弱；对隧道结构而言，土压静载是结构设计的控制荷载，列车振动引起的附加内力增幅较小。
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| 关 键 词： | 交叠隧道 振动荷载 数值模拟 动力响应 |
| 文章编号： | 1000-7598-(2002)06-0770-05 |
| 收稿时间： | 2001-11-07 |
| 修稿时间： | 2001年11月7日 |
Numerical simulation of dynamic response of overlap tunnels in close proximity due to train's vibrating load |
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| CHEN Wei-jun,ZHANG Pu.Numerical simulation of dynamic response of overlap tunnels in close proximity due to train''''s vibrating load[J].Rock and Soil Mechanics,2002,23(6):770-774. |
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| Authors: | CHEN Wei-jun ZHANG Pu |
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| Institution: | Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Based on track vibrating acceleration data measured from tunnels of Shanghai Metro Project, the numerical simulations by using 3D and 2D FEM are carried out in order to understand the dynamic response of overlap tunnels in close proximity to Nanpu Bridge Project due to the train’s vibrating load. The follwing conclusions are given: 1.mutual influences between the overlap tunnels are much greater than the parallel ones; 2. the longer the distance between the tunnels, the less the mutual influences; 3. for the tunnel structure design, the static soil pressure is the key load, and the additional stress induced by the train’s vibrating load is much smaller than the stress induced by the static load. |
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| Keywords: | overlap tunnels vibrating load numerical simulation dynamic response |
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