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工程力学  2015 

高速移动列车荷载作用下层状饱和地基-轨道耦合系统的动力响应

DOI: 10.6052/j.issn.1000-4750.2014.04.0323, PP. 189-200

Keywords: 层状饱和地基-轨道耦合系统,层状饱和地基,移动荷载,土层动力特性,2.5维间接边界元,动力响应

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Abstract:

基于Biot流体饱和多孔介质理论,求得层状饱和地基表面移动荷载的动力格林函数,进而建立2.5维间接边界元方法,研究了高速移动列车荷载作用下层状饱和地基-轨道耦合系统的动力响应。该文通过与已有结果的比较验证了方法的正确性,并以均匀饱和半空间地基和饱和基岩上单一饱和土层地基为模型进行了数值计算,分析了列车移动速度和饱和土层等对动力响应的影响。研究表明,层状饱和地基和均匀饱和地基对应的动力响应有着显著的差别;列车移动速度接近饱和地基的Rayleigh波速时,会引起饱和地基-轨道耦合系统的共振,产生较大的动力响应;饱和地基不透水情况下动力响应最大,饱和地基透水情况下动力响应次之,干土情况下动力响应最小。另外,饱和土孔隙率、饱和基岩与饱和土层刚度比、饱和土层厚度等也对动力响应具有重要影响。

References

[1]  De Barros F C P, Luco J E. Response of a layered viscoelastic half-space to a moving point load [J]. Wave Motion, 1994, 19(2): 189―210.
[2]  Sheng X, Jones C J C, Petyt M. Ground vibration generated by a load moving along a railway track [J]. Journal of Sound and Vibration, 1999, 228(1): 129―156.
[3]  Kaynia A M, Madshus C, Zackrisson P. Ground vibration from high-speed trains: prediction and countermeasure [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 126(6): 531―537.
[4]  Takemiya H, Bian X. Substructure simulation of inhomogeneous track and layered ground dynamic interaction under train passage [J]. Journal of Engineering Mechanics, 2005, 131(7): 699―711.
[5]  Picoux B, Le Houédec D. Diagnosis and prediction of vibration from railway trains [J]. Soil Dynamics and Earthquake Engineering, 2005, 25(12): 905―921.
[6]  巴振宁, 梁建文, 金威. 高速移动列车荷载作用下成层地基-轨道耦合系统的动力响应[J]. 土木工程学报, 2014, 47(11): 108―119. Ba Zhenning, Liang Jianwen, Jin Wei. Dynamic responses of layered ground-track coupled system due to high-speed train moving loads [J] China Civil Engineering Journal, 2014, 47(11): 108―119. (in Chinese)
[7]  Biot M A. Theory of propagation of elastic waves in a fluid-saturated porous solid. I. Low-frequency range [J]. The Journal of the Acoustical Society of America, 2005, 28(2): 168―178.
[8]  Biot M A. Theory of propagation of elastic waves in a fluid-saturated porous solid. II. Higher frequency range [J]. The Journal of the Acoustical Society of America, 2005, 28(2): 179―191.
[9]  Theodorakopoulos D D. Dynamic analysis of a poroelastic half-plane soil medium under moving loads [J]. Soil Dynamics and Earthquake Engineering, 2003, 23(7): 521―533.
[10]  徐斌, 陆建飞, 王建华, 等. 移动荷载作用下层状饱和土的动力响应[J]. 岩土力学, 2008, 29(12): 3186―3192. Xu Bin, Lu Jianfei, Wang Jianhua, et al. Dynamic response of layered saturated soil under moving loads [J]. Rock and Soil Mechanics, 2008, 29(12): 3186―3192. (in Chinese)
[11]  陈远国, 金波. 移动简谐荷载作用下多孔地基的动力响应[J]. 中国科学: G 辑, 2009, 38(3): 250―259. Chen Yuanguo, Jin Bo. Dynamic response of layered saturated soil under moving loads [J]. Science in China: Series G, 2009, 38(3): 250―259. (in Chinese)
[12]  Lu J F, Jeng D S. A half-space saturated poro-elastic medium subjected to a moving point load [J]. International Journal of Solids and Structures, 2007, 44(2): 573―586.
[13]  X B, Lu J F, Wang J H. Dynamic response of a layered water-saturated half space to a moving load [J]. Computers and Geotechnics, 2008, 35(1): 1―10.
[14]  高广运, 李宁, 何俊锋, 等. 列车移动荷载作用下饱和地基的地面振动特性分析[J]. 振动与冲击, 2011, 30(6): 86―92. Gao Guangyun, Li Ning, He Junfeng, et al. Analysis of ground vibration generated by train moving loads on saturated soil [J]. Journal of Vibration and Shock, 2011, 30(6): 86―92. (in Chinese)
[15]  高广运, 何俊锋, 杨成斌, 等. 2.5 维有限元分析饱和地基列车运行引起的地面振动[J]. 岩土工程学报, 2011, 33(2): 234―241. Gao Guangyun, He Jimfeng, Yang Chengbin, et al. Ground vibration induced by trains moving on saturated ground using 2.5 D FEM [J]. Chinese Journal of Geotechnical Engineering, 2011, 33(2): 234―241. (in Chinese)
[16]  蔡袁强, 孙宏磊, 徐长节. 轨道刚度对路轨系统及饱和地基动力响应的影响[J]. 岩土工程学报, 2007, 29(12): 1787―1793. Cai Yuanqiang, Sun Honglei, Xu Changjie. Effect of rail rigidity on track-ground vibrations due to a high-speed train [J]. Chinese Journal of Geotechnical Engineering, 2007, 29(12): 1787―1793. (in Chinese)
[17]  蔡袁强, 王玉, 曹志刚. 移动荷载作用下饱和地基上板式轨道动力分析[J]. 振动工程学报, 2011, 24(1): 48―54. Cai Yuanqiang, Wang Yu, Cao Zhigang. Dynamic analysis of a slab track on the poroelastic soil subjected to moving loads [J]. Journal of Vibration Engineering, 2011, 24(1): 48―54. (in Chinese)
[18]  Xu B, Lu J F, Wang J H. Dynamic response of an infinite beam overlying a layered poroelastic half-space to moving loads [J]. Journal of Sound and Vibration, 2007, 306(1): 91―110.
[19]  Wolf J P. Dynamic soil-structure interaction [M]. Prentice Hall Int, 1985.
[20]  Lefeuve-Mesgouez G, Mesgouez A. Three-dimensional dynamic response of a porous multilayered ground under moving loads of various distributions [J]. Advances in Engineering Software, 2012, 46(1): 75―84.
[21]  Lin C H, Lee V W, Trifunac M D. The reflection of plane waves in a poroelastic half-space saturated with inviscid fluid [J]. Soil Dynamics and Earthquake Engineering, 2005, 25(3): 205―223.

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