中南大学学报（自然科学版）2025，Vol.56Issue(4)：1454-1465,12.DOI:10.11817/j.issn.1672-7207.2025.04.017
地震波浪联合作用下高速列车深水斜拉桥系统空间耦合振动分析
Spatial coupling vibration analysis of deep-water cable-stayed bridge system for high-speed train under combined action of earthquake and wave
摘要
Abstract
A spatial coupling vibration analysis method for high-speed train deep-water cable-stayed bridge time-varying system considering both seismic and wave combined effects was proposed.A train-track cable-stayed bridge system dynamic analysis model considering the effect of track irregularity was established.The seismic hydrodynamic pressure of the bridge underwater structure was based on the radiation theory of water by converting it into additional mass through the rigid column method.The wave force of the underwater structure of the bridge was simulated by using the Morison equation and diffraction wave theory.The spatial vibration equation of the time-varying system of the high-speed train deep-water cable-stayed bridge under the combined action of earthquake and wave was established.Based on the joint simulation analysis platform of ANSYS and SIMPACK,the spatial vibration analysis of high-speed train deep-water cable-stayed bridge system was carried out under only seismic action,only wave action,and combined action of seismic and wave,respectively.The effects of the seismic hydrodynamic pressure alone,wave force alone,and the combined action of the two on the dynamic response of the train-bridge system were investigated.The results show that considering the seismic hydrodynamic pressure,the wheel load reduction rate,derailment coefficient,wheel and axle lateral force,lateral acceleration and other indicators of the train significantly increase.When the seismic intensity exceeds 0.10g,the effect of seismic hydrodynamic pressure on the train-bridge response becomes more significant.The impact of wave action alone on the dynamic response of the coupled system is relatively small.The phase difference between earthquakes and waves has significant impact on the dynamic response of coupled system.Comparing the case that the wave action is considered with that the wave action is absent,when the phase difference changes,the maximum increasing parameter in the dynamic response of the coupled system is the derailment coefficient,with a maximum increase of 11.0％.关键词
车桥耦合/深水斜拉桥/地震动水力/波浪作用/相位差Key words
train-bridge coupling/deep-water cable-stayed bridge/seismic hydrodynamic pressure/wave action/phase difference分类
交通工程引用本文复制引用
郭文华,薛超,段彬鑫,赵大亮..地震波浪联合作用下高速列车深水斜拉桥系统空间耦合振动分析[J].中南大学学报（自然科学版）,2025,56(4):1454-1465,12.基金项目
国家自然科学基金资助项目(52078489) （52078489）
中南大学中央高校基本科研业务费专项资金资助项目(2024ZZTS0494) （2024ZZTS0494）
中国铁建股份有限公司科研计划项目(2021-C56) （2021-C56）
中铁第五勘察设计院集团有限公司科研计划项目(T5Y2021-A03)(Project(52078489)supported by the National Natural Science Foundation of China （T5Y2021-A03）
Project(2024ZZTS0494)supported by the Fundamental Research Funds for the Central Universities of Central South University （2024ZZTS0494）
Project(2021-C56)supported by China Railway Construction Co.Ltd. （2021-C56）
Project(T5Y-2021-A03)supported by China Railway Fifth Survey and Design Institute Group Co.Ltd.) （T5Y-2021-A03）
