（1 上海大学土木工程系，上海 200072； 2 上海宝钢工程技术有限公司，上海 201900；3 同济大学结构工程与防灾研究所，上海 200092； 4 济南市同圆建筑设计研究院，济南 250001； 5 山东省建筑材料工业设计研究院，济南 250022）

［摘要］通过模拟人行随机荷载激励，分别采用四种人行荷载工况对一座既有钢结构人行桥进行了人致振动时程分析，从而更好地了解该人行桥在行人激励下的动力特性。考虑到现有人行桥的动力特点及对其振动舒适度评价方法的不足，提出了考虑结构双向耦合振动的舒适

度评价方法，并对该桥进行了舒适度评价，证明了该桥在动力性能上存在的问题。这对人行桥人行荷载模拟、人行桥振动舒适度评价以及防振减振研究都具有参考借鉴意义。

［关键词］人行桥；随机人行荷载；荷载工况；人致振动；舒适度评价

Analysis on pedestrian-induced vibration and comfort evaluation of an footbridge

Li Dong1, Fa Yongsheng2, Sun Cuihua3,4, Bao Liang 5

(1 Civil Engineering Department, Shanghai University, Shanghai 200072, China; 2 Shanghai Baosteel Engineering & Technology Co.,Ltd.,Shanghai 201900, China;3 Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China; 4 Jinan Tongyuan Research Institute of Architectural Design, Jinan 250001, China; 5 Shandong Province Design and Research Institute of Building Materials Industry, Jinan 250022, China)

Abstract:According to simulating stochastic pedestrian loads, and adopting fourload cases respectively, it analyzed the time-history responses of an existingsteel footbridge, which made the dynamic characteristics of the bridge understood better. By considering the dynamic characteristics of modern footbridges and the deficiencies of comfort evaluation method, it proposes a new evaluation method by considering coupling effect of bi-direction vibration. Using this method, a conclusion is drawn that some problems exist in dynamic performance of this footbridge certainly. This procedure, for simulating pedestrian loads, comfort evaluation and vibration reduction study, can be reference for similar engineering.

Keywords:footbridge; stochastic pedestrian load; load cases; pedestrian -induced vibration; comfort evaluation

作者简介：李东，博士，副教授。