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大跨径人行桥结构由于轻柔的结构特点,在外荷载的作用下容易产生大幅不利的振动,对行人安全造成威胁。尤其处于景区的此类结构,更是承受着极大的人流荷载。因此,对于景区大跨径人行桥的运营安全管控十分关键。依托某景区大跨人行悬索桥,通过国内人行桥人流量研究,以及行人和风荷载作用下结构振动研究,阐明了景区大跨径人行桥安全管控的必要性和严重性。在此基础之上,重点在人流容量控制和监控系统两个方面提出了相应的运营安全管控措施,为该类结构的管理提供参考。
Due to the gentle structural features of the large-span footbridge structure, it is easy to produce a substantial negative vibration under the action of an external load, posing a threat to pedestrian safety. Especially in the scenic area of such structures, it is to withstand the great flow of people. Therefore, it is very important to control the operation safety of the scenic long-span footbridge. Based on the research on the pedestrian bridge of a large spanned pedestrian crossing in a certain scenic area, the study on the flow of people in the domestic pedestrian bridge and the study on the structural vibration under pedestrian and wind loads clarify the necessity and seriousness of the safety control of the large-span pedestrian bridge in the scenic area. On this basis, the author puts forward corresponding operation safety control measures in two aspects of capacity control and monitoring system of people flow, and provides references for the management of this kind of structure.