|
|
|
| Analysis of Dynamics of Slab Track and Saturated Foundation Under Train Load |
| WANG Yu1，ZHANG Rong －xin2 |
| 1．The Third Railway Survey ＆ Design Institute Group Corporation，Tianjin 300142，China; 2．Tianjin Vocational Institute，Tianjin 300410，China |
|
|
|
|
Abstract Research purposes:With the more and more high － speed railways being putting into service，the vibration influence of high － speed train on the surrounding environment is increasing gradually． In the coastal area，many high －speed railways are built on saturated soft clay foundation featured with the low shear wave velocity and high water content． The high － speed train could produce the big vibrations response to the saturated soft foundation． A slab track －saturated foundation coupled model was established to research the vibrations response to the saturated soil under the effect of the load of the high － speed train for the purposes of effectively overcoming the environment vibration induced by the high － speed train and proving the theoretical guidance to optimization of subgrade design of high － speed railway．
Research conclusions:The numerical results show using the multiple － aperture saturated medium to simulate the saturated soil foundation can more accurately analyze the vibration response induced by the high － speed train，enhancing the track stiffness can effectively control the rail displacement and increasing the thickness of the foundation bed in design can reduce the impact of the liquid phase medium in soil on the dynamic response to the soil．
|
|
Received: 04 May 2012
|
|
|
|
|
|
［1］ TAKEMIYA H． Simulation of Track － ground Vibration Due to a High － speed Train: the Case of X － 2000 at Ledsgard ［J］．Journal of Sound and Vibration， 2003 (5) : 503－526．
［2］ 周华飞，蒋建群，张土乔． 移动荷载下 Kelvin 地基上无限长梁的稳态响应 ［J］． 浙江大学学报(工学版) ，2004 (10) :1328－1333．
Zhou Huafei，Jiang Jianqun，Zhang Tuqiao． Steady － state Response of Infinite Beam on Kelvin Foundation under Moving Loads ［J］．Journal of Zhejiang University (Engineering Science) ，2004 (10) : 1328－1333．
［3］ SHENG X，JONES C J C，THOMPSON D J． A Theoretical Model for Ground Vibration From Trains Generated by Vertical Track Irregularities ［J］． Journal of Sound and Vibration，2004(4) : 937－965．
［4］ 边学成，陈云敏． 列车荷载作用下轨道和地基的动响应分析［J］． 力学学报，2005(4) :477－484．
Bian Xuecheng，Chen Yunmin． Dynamic Analysis of Track and Ground Coupled System with High － speed Train Ioads［J］． Chinese Journal of Theoretical and Applied Mechanics，2005(4) : 477－484．
［5］ KARLSTROM A，BOSTROM A． An Analytical Model for Train － induced Ground Vibrations from Railways ［J］． Journal of Sound and Vibration，2006(7) : 221－241．
［6］ HUSSEIN M F M，HUNT H E M． Modeling of Floating － slab Tracks with Continuous Slabs under Oscillating Moving Load ［J］． Journal of Sound and Vibration， 2006(3) : 37－54．
［7］ 和振兴，翟婉明． 高速列车作用下板式轨道引起的地面振动［J］． 中国铁道科学，2007(2) :7－11．
He Zhenxing， Zhai Wanming． Ground Vibration Generated by High － speed Trains along Slab Tracks ［J］． China Railway Science，2007(2) :7－11．
［8］ STEEMBERGEN M，METRIKINE A V． The Effect of the Interface Conditions on the Dynamic Response of a Beam on a Half － space to a Moving Load ［J］． European Journal of Mechanics A － Solids，2007 (1) : 33－54．
［9］ ZHAI W M，WANG K Y，CAI C B． Fundamentals of Vehicle － track Coupled Dynamics ［J］． Vehicle System Dynamics，2009(11) : 1349－1376．
［10］ 付兵先，史存林，马伟斌． 客运专线板式轨道动力反应分析［J］． 铁道工程学报，2009(7) :48－53．
Fu Bingxian，Shi Cunlin，Ma Weibin． Analysis of Dynamic Response on Slab Track for Passenger Dedicated Line［J］． Journal of Railway Engineering Society，2009(7) : 48－53．
［11］ BIOT M A． Theory of Propagation of Elastic Waves in a Fluid － saturated Porous Solid， Part I: Low － frequency Range; Part II: High － frequency Range ［J］． Journal of the Acoustical Society of America，1956 (2) :168－191．
［12］ THEODORAKOPOULOS D D． Dynamic Analysis of a Poroelastic Half － plane Soil Medium under Moving Loads ［J］． Soil Dynamics and Earthquake，2003 (6) : 521－533．
［13］ 金波． 高速荷载下多孔饱和地基的动力响应［J］． 力学季刊，2004(2) : 168－174．
Jin Bo． Dynamic Responses of a Poroelastic Half Space Generated by High Speed Load ［J］． Chinese Quarterly of Mechanics，2004(2) : 168－174．
［14］ JIN Bo． Dynamic Displacements of an Infinite Beam on Poroelastic Half Space Due to a Moving Oscillating Load ［J］． Archive of Applied Mechanics，2004 (7) : 277－287．
［15］ 蔡袁强，孙宏磊，徐长节． 移动荷载下上覆弹性板饱和地基的动力响应［J］． 计算力学学报，2008(2) :156－161．
Cai Yuanqiang，Sun Honglei，Xu Changjie． Response of Beams on Poroelastic Half － space Soil Medium to Moving Load ［J］． Chinese Journal of Computational Mechanics，2008(2) : 156－161．
［16］ XU B，LU J F，WANG J H． Dynamic Responses of a Layered Water － saturated Half Space to a Moving Load ［J］． Computers and Geotechnics，2008(1) :1－10．
|
|
|
|
2012, Vol. 29 
