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Seismic response analysis of high-speed railway vehicle-slab ballastless track-bridge system under near-fault pulse ground motions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chen, L. K. Jiang, L. Z. Zeng, Z. P. |
| Copyright Year | 2014 |
| Abstract | This paper presents a finite element method (FEM) framework for the dynamic analysis of coupled vehicle—bridge systems under nearfield /far-field ground motions. A train car with two bogies is assumed to be represented sufficiently by a discrete, rigid multi-body system with thirty-eight degrees of freedoms (DOFs). The normal Hertzian contact theory and the tangential Kalker linear theory modified by the Shen-Hedrick-Elkins theory is used to establish the dynamic wheel-rail interaction relationship. The triple layered ballastless slab-track is being introduced into the highspeed vehicle-bridge system. Based on the PEER Ground Motion Database, TTBDA, a computer program for the simulation of a high-speed train running on the railway structure under seismic loads, has been developed. The seismic responses of the vehiclebridge system are calculated, and the impact of the near-fault effect on the dynamic responses of the vehicle-bridge system are studied. The case study results demonstrate that near-fault pulse-like ground motions more significantly affect the dynamic responses of the bridge and the running safety of the trains than the nonpulse-like motions of farfield ground motions. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://db.nzsee.org.nz/2014/poster/4_Chen.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
