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地铁运行引起的饱和地基动力响应.pdf
44 10 浙 江 大 学 学 报() Vol.44 No. 10
2010 10 Journal of Zhejiang University ( Engineering Science) ct. 2010
D I: 10.3785/j.issn. 1008973X.2010. 10.014
1 2 1
高广运, 何俊锋 , 李 佳
( 1. , 200092; 2. , 644000)
: Biot , Fourier ,
Galerkin uw 2.5 , Fourier
..,
., ,
.
:; ;uw 2.5 ;Fourier ;
: TU 113.5 : A : 1008973X( 2010)
Dynamic responseinduced by running subway in saturated ground
1 2 1
GA Guangyun , HE Junfeng , LI Jia
( 1. K ey L aboratory of Geotechnical and Underground Engineering , Ministry of Education, Tongj i Univ ersity , Shanghai
200092, hina; 2. Yibin Municip al Bureau of Transp ortation, Sichuan P rov ince, Yibin 644000, hina)
Abstract: T he Galerkin method was used to derive the uw format 2. 5D finite element equation in the
frequency domain and wavenumber domain by Fourier transform based on Biot s wave propagation
equations for a saturated porous medium. The threedimensional timespace domain dynamic response of
the track and the ground was obtained from the fast inverse Fourier transform. T he model of 2.5D finite
element model was verified by the calculation example. The subwaytunnelsaturated 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.
Key words: subway moving load; saturated soil; uw format 2. 5D finite element; inverse Fourier transform;
dynamic response
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. ,
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