公轨共建高架车站车桥耦合振动分析
引用文献：
吕尚文. 公轨共建高架车站车桥耦合振动分析[J]. 建筑结构，2023，48（03）：127-132.
LÜ Shangwen. Analysis on vehicle-bridge coupling vibration of highway and rail transit co-construction station[J]. Building Structure，2023,48（03）：127-132.
摘要：公轨共建结构体系是一种复合型交通模式，有利于节约城市的土地和构建合理的城市空间资源。公轨共建高架车站作为典型的交通建筑，同时承受汽车和列车的振动荷载。以温州市域铁路S2线的人民路站为例，研究车辆-车站结构系统的耦合振动分析。先假定汽车荷载为连续的移动荷载，忽略轨道不平顺的因素，研究汽车荷载对列车运行的影响；然后考虑轨道不平顺因素，单列车及双列车越行通过车站，忽略上部汽车荷载的影响，研究列车-车站结构系统的振动响应；最后对汽车-列车-车站结构的整体系统进行耦合振动分析，研究汽车及列车分别以不同的速度通过车站时系统的响应，依据规范采用平稳性指标评价乘客对列车运行平稳性的感知程度。研究结果表明，各工况下列车运行的平稳性指标均小于规范规定限值，总体评价为优秀。
关键词：公轨共建车站；汽车-列车-车站结构耦合系统；轨道不平顺；动力响应；平稳性指标；
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Analysis on vehicle-bridge coupling vibration of highway and rail transit co-construction station
Abstract: Highway and rail transit co-construction system is a type of compound transportation mode, which is conducive to saving urban land and building reasonable urban space resources. As a typical compound traffic building, highway and rail transit co-construction station bears the vibration load of vehicles and trains at the same time. Taking Renmin Road Station of S2 line of Wenzhou City railway as an example, the coupling vibration analysis of the vehicle-train station structure system was studied. Firstly, the vehicle load was assumed to be a continuous moving load, and the factors of track irregularity were ignored to study the influence of vehicle load on train operation. In addition, considering the factors of track irregularity, single train and double train passing through the station, ignoring the influence of the upper vehicle load, the vibration response of the vehicle-train station structure system was studied. Finally, the coupling vibration of the whole system of the vehicle-train-station structure was analyzed to study the response of the system when the vehicles and trains pass through the station at different speeds respectively. The smoothness index was adopted to evaluate the degree of passengers′ perception of the smoothness of the train according to the standard. The results show that the smoothness index of train operation under each working condition is less than the limit value stipulated by the code, and the overall evaluation is excellent.
Keywords: highway and rail transit co-construction station; vehicle-train-station interaction structure system; track irregularity; dynamic response; smoothness index
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