人行斜跨拱桥的设计和分析

Design and Analysis of Pedestrian Inclined-span Arch Bridge

以昆明市某人行斜跨拱桥为工程背景,通过建立不同拱肋高度的计算模型,对结构的应力和位移、自振频率、稳定性等进行计算分析。结果表明随着拱肋高度的增加,拱肋的最大应力和各构件的竖向位移有显著影响,竖向频率及稳定系数随之增加。斜跨拱具有很独特的景观效应,是合适的城市景观桥梁。

Based on the engineering background of a pedestrian inclined-span arch bridge in Kunming City and setting up the different arch rib heights of calculation model,the article calculates and analyzes the structural stress,displacement,natural vibration frequency,stabilization and etc.The result makes clear that the maximum stress of arch rib and the vertical displacement of each member are obviously influenced,and the vertical frequency and the stable coefficient are increased with the increment of arch rib height.The inclined-span arch has the unique landscape effect,and is suitable for the urban landscape bridge.