摘要
人行索道桥结构刚度小,步伐荷载作用下结构振动幅度大,容易引起行人心里上的恐惧甚至导致安全事故。由于结构的基频远小于3.0Hz,现行的人行桥设计规范不能适用于该类桥梁振动舒适性评价。为了评估大跨度索道桥在不同人群密度通行条件下的舒适性评估方法,提出基于单一行人行走时的振动响应实测结果的分析方法。为索道桥振动舒适性评估提供一例参考。
The structural rigidity of pedestrian cableway is small, and the vibration amplitude of structure is large under the action of step load, which can cause fear of pedestrians＇heart and even lead to safety accident. As the fundamental frequency of the structure is much smaller than 3.0Hz, the existing pedestrian design specifications can not be applied to the bridge vibration comfort evaluation. In order to evaluate the comfort evaluation method of large span cableway under different population density, the method of analyzing the vibration response based on single pedestrian bleway bridge is provided. walking is put forward. And an example for the evaluation of vibration comfort of cableway bridge is provided.
出处
《佳木斯大学学报（自然科学版）》
CAS
2017年第5期731-734,741,共5页
Journal of Jiamusi University：Natural Science Edition
关键词
人行索道桥
人群荷载
等效舒适性
等效人数
竖向振动
pedestrian cableway
crowd load
equivalent comfort
equivalent number
vertical vibration
