CHARACTERISTICS OF WAVE PROPAGATION ON THE SOFT GROUND WITH NON-FLAT BASE-FROM THE VIEW POINT OF RAILWAY VEHICLE DYNAMIC BEHAVIOR-
In order to check the running safety of trains on structures, it is essential to take into account the characteristics of input earthquake motions. On the soft ground with a non-flat base, waves generate in a base slant area and propagate in the horizontal direction. The behavior of railway vehicle, therefore, is affected by the horizontally propagating waves. In this paper, we clarify the effects of these characteristics of wave propagations on the railway vehicle dynamic behavior. By the simulations, the following two characteristics were obtained: 1) the smaller shear wave velocity of soft surface layer becomes, the more cautions are necessary to secure the running safety of trains; 2) The running safety of vehicle running with high speed on the soft ground with a non-flat base is influenced by the amplification of the earthquake ground motion due to the basin effects rather than the difference of displacements between two adjacent piers.
Soft ground with non-flat base horizontally propagating wave vehicle dynamics behavior
T.Kawanishi Y.Murono T.Miyamoto M.Sogabe
Researcher,Structure Technology Division,Railway Technical Research Institute,Tokyo,Japan Senior Researcher,Structure Technology Division,Railway Technical Research Institute,Tokyo,Japan Laboratory Head,Railway Dynamics Division,Railway Technical Research Institute,Tokyo,Japan Senior Researcher,Railway Dynamics Division,Railway Technical Research Institute,Tokyo,Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）