多动力作用下高速铁路轨道-桥梁结构体系动力学及关键技术研究

发布时间：2018-03-24 11:15

本文选题：高速铁路轨道-桥梁　切入点：列车　出处：《土木工程学报》2017年11期

【摘要】：针对多动力(列车、地震、侧风)作用下高速列车-轨道-桥梁系统动力学理论与关键技术存在的诸多技术疑难,持续开展了高速铁路轨道-桥梁结构体系模型试验、现场测试、理论分析与数值仿真,提出基于概率密度演化理论的多动力作用下轨道-桥梁系统随机振动分析方法和基于可靠度理论的桥上行车安全评定方法,研发了高速铁路轨道-桥梁系统试验平台和成套试验技术,提出高速铁路轨道-桥梁系统抗震设防和防风设计理念和评估方法,并研发了抗震防风及减灾技术,研究成果已在高速铁路轨道-桥梁结构体系设计与运营维护中推广应用。
[Abstract]:Aiming at the technical difficulties existing in the theory and key technologies of high-speed train-track bridge system dynamics under the action of multi-power (train, earthquake, crosswind), the model test of high-speed railway railway-bridge structure system is carried out continuously. Field test, theoretical analysis and numerical simulation, the stochastic vibration analysis method of track bridge system based on probability density evolution theory and the safety assessment method based on reliability theory are proposed. The high-speed railway track-bridge system test platform and complete set of test technology are developed, and the design concept and evaluation method of seismic fortification and wind-proof system of high-speed railway railway-bridge system are put forward, and the anti-seismic wind-proof and anti-wind mitigation technology are also developed. The research results have been popularized and applied in the design, operation and maintenance of track-bridge structure system of high-speed railway.
【作者单位】：中南大学;高速铁路建造技术国家工程实验室;中国铁路总公司;中国铁路设计集团有限公司;中铁二院工程集团有限责任公司;
【基金】：国家自然科学基金(51578549);国家自然科学基金-高铁联合基金(U1434204;U1534206) 中国铁路总公司科技开发计划(2015G002-C;SY2016G001)
【分类号】：U211;U441

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