【摘要】 针对人行天桥舒适度评价标准合理性不明确的问题，基于MSD (mass-spring-dumper)简化分析模型，建立多人随机作用下的人桥耦合动力方程，通过有限多次数值计算结果进行概率统计分析，发现采用均方根加速度作为评价标准更加合理。对一座新建人行天桥，采用均方根加速度评价标准，应用改进的烦恼率模型进行舒适度评估。结果表明：天桥舒适度主要取决于行人振感限值，并与桥上的人流量有关。研究成果可为人行天桥的舒适度设计提供参考。更多还原

【Abstract】 Aim at the indeterminate rationality of the evaluation criteria used in the comfort level evaluation of pedestrian bridges, based on the simplified analysis model of MSD,the human-bridge coupling dynamic equation under the random action of many people was established.Through the probability statistical analysis of the results of many times numerical calculations, it was found that the root-mean-square acceleration as the evaluation criteria was more reasonable than the structural peak acceleration.Using the RMS( Root Mean Square)Acceleration as the evaluation criterion, the comfort level of a pedestrian bridge engineering case was evaluated by the improved annoyance rate model.The results show that the comfort level of a pedestrian bridge is mainly determined by the vibration threshold of the pedestrian, and is related to the pedestrian flow.The research results provide a reference for the comfort level design of pedestrian bridges.更多还原