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J4  2010, Vol. 44 Issue (10): 1925-1930    DOI: 10.3785/j.issn.1008-973X.2010.10.014
岩土工程、土木及建筑工程     
地铁运行引起的饱和地基动力响应
高广运1, 何俊锋2, 李佳1
1. 同济大学 岩土及地下工程教育部重点实验室,上海 200092; 2. 四川省宜宾市交通局,四川 宜宾 644000
Dynamic response induced by running subway in saturated ground
GAO Guang-yun1, HE Jun-feng2, LI Jia1
1. Key Laboratory of Geotechnical and Underground Engineering, Ministry of Education, Tongji University, Shanghai
200092, China; 2. Yibin Municipal Bureau of Transportation, Sichuan Province, Yibin 644000, China
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摘要:

基于Biot饱和多孔介质的波动方程,通过对时间的Fourier变换得出频域内的波动方程,结合边界条件利用Galerkin法推导出频域波数域内的uw格式的2.5维有限元方程,通过快速Fourier逆变换求得三维时域空间域内的动力响应.通过计算实例验证了计算模型.建立地铁隧道饱和地基动力相互作用模型,分析地铁移动荷载引起的饱和地基动力响应.研究表明,地铁荷载加振频率对振动幅值及衰减规律的影响很大,控制荷载自振频率是减小环境振动的最佳措施.

Abstract:

The Galerkin method was used to derive the uw format 2.5D finite element equation in the frequency domain and wavenumber domain by Fourier transform based on Biot’s wave propagation equations for a saturated porous medium. The threedimensional timespace domain dynamic response of the track and the ground was obtained from the fast inverse Fourier transform. The model of 2.5D finite element model was verified by the calculation example. The subwaytunnelsaturated ground’s dynamic interaction model was established to analyze the dynamic response induced by subway moving load. Results showed that the oscillation frequency of subway moving loads greatly influenced the vibration amplitude and the attenuation law. It is the best measures to control the oscillation frequency for reducing the environment vibration.

出版日期: 2010-10-01
:  TU 113.5  
基金资助:

国家自然科学基金资助项目(50538010,50678128,50878155);上海市重点学科建设资助项目(B308).

作者简介: 高广运(1961—),男,安徽阜阳人,教授,博导,从事土动力学和桩基的研究.E-mail:gaoguangyun@263.net
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引用本文:

高广运, 何俊锋, 李佳. 地铁运行引起的饱和地基动力响应[J]. J4, 2010, 44(10): 1925-1930.

GAO An-Yun, HE Dun-Feng, LI Jia. Dynamic response induced by running subway in saturated ground. J4, 2010, 44(10): 1925-1930.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.10.014        http://www.zjujournals.com/eng/CN/Y2010/V44/I10/1925

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