大跨异形钢人行景观桥舒适度分析及控制

Analysis and Control of Comfort of Long-span Special-shaped Steel Landscape Footbridge

摘要:

随着城市建设的不断深入和民众生活质量的稳步提升，大跨异形钢人行景观桥在城市景观塑造中的作用逐渐彰显。为满足人行桥的景观特性，此类桥大多采用大跨度钢结构并且结构较为轻薄，由此导致结构基频较低，易引发人与桥梁之间的共振，人行舒适度问题也引起了更多关注。通过对一大跨钢人行景观桥动力特性分析，运用理论计算与有限元模拟等方法，对桥梁的舒适度进行深入研究，并提出相应的控制措施，旨在为同类桥梁的设计与建设提供参考依据，确保行人在桥上行走时具有良好的体验。

Abstract:

With the continuous advancement of urban development and the steady improvement of the life quality of the people, the long-span special-shaped steel landscape footbridges are gradually playing a more prominent role in urban landscape shaping. To satisfy the landscape characteristics of footbridges, the most of the bridges are the long-span steel structures, and the structures are relatively thin and light. As a result, the fundamental frequency of the structure is lower, which easily triggers the resonance between human and the bridge. Therefore, the issue of pedestrian comfort has also attracted more attention. Through the analysis on the dynamic characteristics of a long-span steel landscape footbridge, the methods of theoretical calculations and finite element simulation are used to further study the comfort of the bridge, and the corresponding control measures are proposed in order to provide the reference basis for the design and construction of the similar bridges, and to ensure the pedestrians with the good experience on the bridges.