【摘要】 为了对多线地铁高架桥的车桥耦合作用进行分析，基于ANSYS的参数设计语言（parametric design language，简称APDL）建立了能够考虑列车单双线行驶的地铁列车-桥耦合动力分析模型。以一座三跨四线地铁高架连续梁桥为研究对象，采用四动二拖6辆编组B型地铁列车模型，分析了地铁列车分别沿不同单双线运行时桥梁结构的动力响应。结果表明：地铁列车对桥梁的横向位移和加速度影响较小；双线对向运行时桥梁竖向位移和加速度响应峰值大于沿单线运行的情况；双线对向运行时桥梁关键截面内力响应峰值约为沿单线运行时内力代数叠加的67%～99%。所提出的数值模型和计算结果可以为多线地铁高架桥车桥耦合振动研究提供理论方法和评估依据。更多还原

【Abstract】 In order to analyze the vehicle-bridge coupling of viaducts for multi-line subway,this paper establishes a metro train-bridge coupling model based on ANSYS′s parametric design language(APDL),for considering the operation of single and double lines.The prototype bridge is a three-span continuous viaduct for four-line subway,and the train type is the type-B metro train of six cars(4 motor cars and 2 trailers cars).The dynamic response of the viaduct for metro train operations along different single and double lines is analyzed.The results show that the influence of metro train on the viaducts′ lateral displacement and acceleration is small.When the double-line trains run simultaneously in opposite direction,the vertical displacement and acceleration responses of the bridge are greater than the case of running along a single line,and the internal forces of the bridge′s critical section is approximately 67%～99% of the sum as the train running along a single line.The numerical model and calculation results presented in this paper can provide a theoretical method and evaluation basis for the study of train-bridge coupling vibration of multi-line subway viaduct.更多还原