大跨度索道桥几何非线性有限元分析

索道桥是以拉索作为主要受力构件,钢横梁及木板等作为局部受力构件的一种悬索体系桥梁,具有建造成本低,工程周期短、易于维修保养等特点,有着广泛的应用前景,但相关技术资料较少。索道桥作为非永久使用桥梁,目前我国还没有关于其设计施工的规程规范。该文以云南某索道桥为例,运用有限元软件MIDAS/civil对索力及横向稳定性进行了计算分析,并对拉索、钢横梁、锚杆的设计进行了验算,所得结果及计算过程可为同类索道桥设计提供参考。

Analysis of Geometrical Nonlinear Finite Element Method for Long-span Cable Bridge

Cable bridge is a type of suspension bridge taking the cable as the main stress component,and taking the steel beam and board as the partial stress components with the characteristics of low construction cost,short engineering period,easy to maintain and the wide using foreground,but a few relative technical materials.There is no the regulations and criterions for the design and construction of the cable bridge as the impermanent bridge in China.Taking a cable bridge of Yunnan as an example,the article uses the finite element software MIDA/civil to calculate and analyze the cable force and the transverse stability,and checks and calculates the design of cable,steel beam and anchor.The achieved result and the calculation process can be referred for the design of the same cable bridges.