三岔形单主缆人行悬索桥的设计探讨

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。

Abstract:

According to the three-fork river terrain of Cock-Crowing Three Provinces Grand Canyon, a design scheme of three- fork pedestrian landscape glass suspension bridge with single main cable is proposed. The three-fork single main cable is suspended on three bridge towers with single column, the sling system suspends a three-fork bridge deck stiffening beam with a central ring, and the three- fork single main cable and three- fork bridge deck stiffening beam are stable triangular structures, It has good spatial stiffness.Combined with the actual project, the engineering parameter design is carried out, the Midas finite element analysis model is established, and the static analysis and dynamic modal analysis are carried out to verify the structural rationality of the three -fork pedestrian suspension bridge with single main cable.