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| Influence of ballastless track constraint on the seismic responses of high-speed railway train-bridge system |
| Received:July 14, 2012 Revised:December 18, 2012 |
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| DOI：10.7511/jslx201306003 |
| KeyWord:slab ballastless track constraint high-speed railway train-bridge system seismic response |
| Author | Institution |
| 陈令坤 |
扬州大学 建筑科学与工程学院, 扬州 ;中南大学 土木工程学院, 长沙 ;中南大学 高速铁路建造技术国家工程实验室, 长沙 |
| 蒋丽忠 |
扬州大学 建筑科学与工程学院, 扬州 ;中南大学 高速铁路建造技术国家工程实验室, 长沙 |
| 余志武 |
扬州大学 建筑科学与工程学院, 扬州 ;中南大学 高速铁路建造技术国家工程实验室, 长沙 |
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| Abstract: |
| The high-speed train (motor car/trailer car) model with 38 DOFs was build up,based on the nonlinear Hertz contact theory and the Kalker creep theory,the strong earthquake records of PEER-NGA were introduced,the fine model of the high-speed train-ballastless track/rail-box girder-bearing-pier-pier-soil were established in this paper,the influence of bearing and pile-soil dynamic interaction were considered,CRTSⅡslab ballastless track and 32 m span simply-supported box girder bridge were studied,the MATLAB software was developed to calculated the seismic responses and train-running safety during earthquake of high-speed railway train-bridge system,and the comparative analysis was carried out.The calculated results show that,the seismic response of the system were larger compared with the high-speed train-ballastless track-bridge system,the constraint influence of the ballastless track can not be ignored,the ballastless track can effectively improve the train-running safety behavior of vehicle with/without earthquake action;the pulse like fault earthquake can significantly affected the responses of high-speed railway train-ballastless track-bridge system and train-running safety. |
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