By using the vehicle-bridge coupling dynamics method, the dynamic model and equations for both the vehicle and bridge are established for predicting dynamic responses of Nanjing Yangtze-River bridge subjected to moving high-speed train. The coupling vibration responses of vehicle-bridge system under moving high-speed trains are calculated and analyzed in details. Numerical results show that, under ICE3 running at the speed of 160 km/h∼360 km/h, the maximum value of vertical and lateral displacements of the middle of main span are only 26.79 mm and 2.10 mm respectively, the ratio of deflection to span is only 1/12542. The maximum values of vertical and lateral accelerations of bridge are 0.39 m/s2 and 0.29 m/s2. The maximum values of the derailment coefficient, the wheel-set decrement ratio, the wheel unloading rate, the acceleration, are smaller than the values specified by Chinese code. The vertical and lateral Spering index of vehicle reach excellent and good respectively. Vertical and lateral rigidity of Nanjing Yangtze-River bridge can satisfy the safety and comfort of running high-speed train.
Dynamic Analysis of Long Span Continuous Steel Truss Arch Bridge under High-Speed Train
Second International Conference on Transportation Engineering ; 2009 ; Southwest Jiaotong University, Chengdu, China
2009-07-29
Conference paper
Electronic Resource
English
Highways and roads , Information technology (IT) , Arch bridges , Transportation management , Construction , Freight transportation , Railroad bridges , China , Dynamic analysis , Water transportation , Steel , Trusses , Air transportation , Rail transportation , Span bridges , Optimization , Public transportation , Traffic management
Dynamic Analysis of Long Span Continuous Steel Truss Arch Bridge under High-Speed Train
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