The half-analytical solution to train-induced ground vibration
Received:April 02, 2013  Revised:August 01, 2013
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DOI:10.7511/jslx201501010
KeyWord:layered soils  Green's functions  wavenumber field  high-speed trains
              
AuthorInstitution
周星德 河海大学 土木与交通学院, 南京
林荣庚 河海大学 土木与交通学院, 南京
李勇直 河海大学 土木与交通学院, 南京
王现凯 河海大学 土木与交通学院, 南京
吴利平 河海大学 土木与交通学院, 南京
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Abstract:
      The ground vibrations caused by moving trains have been intensified as the trains run faster.Based on the finite element theory,track dynamics and the Green's functions of foundation soil,an integrated track-soil dynamic interaction model is established.In order to acquire the dynamic equations,in the paper,a static degree-of-freedom(DOF) condensation mode is utilized to eliminate the rotation DOF existed in beam.The stiffness matrix can be determined by aid of the definition of receptance matrix in literature [12] and Hankel Transformation,furthermore,the dynamic responses of system can also be calculated by Newmark method.In the last,the Sweden's X2000 high-speed passenger train is taken as the object,the feasibility of the proposed method is demonstrated by comparing with the experimental data.