装配式单柱雨棚在列车高速通过时的结构响应  

Structural Response of Prefabricated Single-Column Canopy During High-Speed Train Passage

作　　者：王太宁 卫振飞 沈千宝 查晓雄 陈德劲 WANG Taining;WEI Zhenfei;SHEN Qianbao;ZHA Xiaoxiong;CHEN Dejing(China Railway Construction Group Co.Ltd.,Beijing 100040,China;School of Civil and Environmental Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen Guangdong 518055,China)

机构地区：[1]中铁建设集团有限公司,北京100040 [2]哈尔滨工业大学(深圳)土木与环境工程学院,广东深圳518055

出　　处：《铁道建筑技术》2025年第1期59-63,85,共6页Railway Construction Technology

基　　金：国家自然科学基金项目(52178129);深圳市科技计划项目(GJHZ20220913143007013,KCXST20221021111408021)。

摘　　要：为研究装配式单柱雨棚在列车高速通过时的结构响应,首先提出单柱雨棚在列车高速越站时表面风压理论模型,基于上述风压理论模型,针对2跨单柱雨棚输入列车高速通过时雨棚风压时程曲线,研究该单柱雨棚结构在列车风作用下的位移、速度以及加速度等响应,同时分析得到装配式关键部位应力的发展规律;对列车通过速度分别为300、400、500、600 km/h的雨棚结构响应进行分析,结果表明,当列车提速至600 km/h,雨棚结构速度峰值为7.2 mm/s,满足规范要求,同时远低于钢结构雨棚的速度峰值,说明装配式雨棚结构振动舒适度上较钢结构雨棚有较大优势。To investigate the structural response of prefabricated single-column canopy during high-speed train passage,a theoretical model of surface wind pressure on a single-column canopy is first proposed for high-speed train passing stations.Based on the proposed wind pressure model,the wind pressure time-history curve for high-speed train passage is applied to a two-span canopy to study the displacement,velocity,and acceleration responses of the canopy under train-induced wind loads.Additionally,the stress development patterns at critical position in the prefabricated structure are analyzed.Structural responses of the canopy are examined for train speeds of 300 km/h,400 km/h,500 km/h,and 600 km/h.The results indicate that when the train speed reaches 600 km/h,the peak velocity of the canopy structure is 7.2 mm/s,meeting regulatory requirements and significantly lower than the peak velocity of steel canopy structures.This demonstrates that the prefabricated single-column canopy structure offers considerable advantages in vibration comfort compared to steel canopy structures.

关 键 词：装配式雨棚 列车风 结构响应 有限元 

分 类 号：TU398[建筑科学—结构工程] U291.6[交通运输工程—交通运输规划与管理]