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时程分析法对某独柱墩人行天桥舒适度的分析与控制 被引量:2

Waling comfort analysis and control for a single-comlumn-supported footbridge using time-related method
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摘要 采用时程分析方法模拟随机人行荷载激励,分四种人行荷载工况对某人行天桥进行了人致振动分析。考虑到现有人行天桥结构动力特性,提出了考虑人行荷载下结构双向耦合振动的计算方法。采用基于Grundmann模型模拟分析人群行走,较好地揭示了结构振动特性。对人行天桥舒适度国内外现有标准和规范进行了研究比较,按EN03标准对结构舒适度进行评价,通过增设TMD的方法有效控制了结构振动,改善了人行天桥舒适度性能水准。 Pedestrian load has been simulated under four cases using time-related method to analysis pedestrian-induced vibration. Considering the dynamic characters of existing footbridges, calculation method involved vertical-horizontal coupled pedestrian load has been proposed,which revealed the structural vibration characters accurately based on Grundmann model. By comparing standards and codes of footbridge comfort at home and broad, EN03 standard was chosen to evaluate the comfort of the footbridge. Additionally, TMD has been used to control the vibration of the structure,which improved the comfort level effectively.
作者 李东 肖遥
出处 《四川建筑科学研究》 北大核心 2015年第1期210-213,共4页 Sichuan Building Science
关键词 人行天桥 独柱墩 舒适度 时程分析 TMD footbridge single-comlumn-supported comfort time-related method TMD
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