峡谷河流的挂网式人行悬索桥设计  

Design of Hanging-net Pedestrian Suspension Bridge in Canyon River

作　　者：李兵[1] 王国华[1] 王天宇 陈若飞 LI Bing;WANG Guohua;WANG Tianyu;CHEN Ruofei

机构地区：[1]江苏交通工程咨询监理有限公司,江苏南京211800 [2]东南大学土木工程学院,江苏南京211189

出　　处：《城市道桥与防洪》2022年第9期95-98,M0010,共5页Urban Roads Bridges & Flood Control

基　　金：江苏省自然科学基金资助项目(BK2012755)。

摘　　要：以某150 m跨径峡谷河流人行景观悬索桥设计为实例,为降低造价,提出了一种挂网式双曲抛物面空间缆索人行悬索桥结构,并通过所建立的Midas有限元分析模型,开展该桥的动力模态特性分析研究,以验证其抗风稳定性。由于该桥将双曲抛物面空间缆索网分散锚固于峡谷河流两侧的悬崖陡壁岩石之上,管桁架式桥面加劲梁则直接搁置在双曲抛物面空间缆索网之上,取消了桥塔和吊索体系,因此节约了造价,且施工简便,同时具有良好的抗风稳定性。Taking the design of a 150 m-span pedestrian landscape suspension bridge in a canyon river as an example,in order to reduce the cost,a structure of hanging-net hyperbolic paraboloid spatial cable pedestrian suspension bridge is proposed.By establishing the Midas finite element analysis model,the dynamic mode characteristics of this bridge are analyzed and studied to verify its stability against wind.Due to the hyperbolic paraboloid spatial cable net of this bridge dispersed and anchored on the cliff and steep wall rocks on both sides of the canyon river,the pipe truss deck stiffening beams are directly placed on the hyperbolic paraboloid spatial cable net.The bridge pylon and sling system is cancelled.Therefore,the cost is saved,the construction is simple and convenient,and also the stability against wind is good.

关 键 词：人行景观桥 挂网式悬索桥 空间缆索网 双曲抛物面 抗风稳定性 

分 类 号：U448.2[建筑科学—桥梁与隧道工程]