三岔形单主缆人行悬索桥的设计探讨  

Discussion on Design of Three-fork Main Single-cable Pedestrian Suspension Bridge

作　　者：陈朝阳 宋守坛[2] CHEN Zhaoyang;SONG Shoutan

机构地区：[1]中国市政工程西北设计研究院有限公司,甘肃兰州730099 [2]东南大学,江苏南京211189

出　　处：《城市道桥与防洪》2022年第9期48-52,M0007,共6页Urban Roads Bridges & Flood Control

基　　金：江苏省自然科学基金项目资助(BK2012755)。

摘　　要：针对鸡鸣三省大峡谷的三岔形河流地形,提出一种三岔形单主缆人行景观玻璃悬索桥的设计方案,三岔形单主缆悬挂在三个独柱桥塔之上,吊索体系悬挂带有中央圆环的三岔形桥面加劲梁,三岔形单主缆和三岔形桥面加劲梁均为稳定的三角形结构形式,具有良好的空间刚度。结合实际工程,进行工程参数设计,建立MIDAS有限元分析模型,进行静力分析和动力模态分析研究,验证三岔形单主缆人行悬索桥的结构合理性。Aiming at the three-fork river terrain of the Grand Canyon of the Three Provinces,a design scheme of three-fork main single-cable pedestrian landscape glass suspension bridge is proposed.The three-fork main single cable is suspended on three single-column bridge pylons.The sling system suspends a three-fork bridge deck stiffening beam with a central ring.The three-fork single main cable and three-fork bridge deck stiffening beam are the stable triangular structures with the good spatial stiffness.Combined with the actual project,the engineering parameter design is carried out.The Midas finite element analysis model is established to carry out the static analysis and the dynamic modal analysis,which verify the structural rationality of the three-fork single main cable pedestrian suspension bridge.

关 键 词：鸡鸣三省大峡谷 三岔形单主缆人行悬索桥 三岔形桥面加劲梁 人行景观玻璃悬索桥 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]