大跨人行天桥动力性能优化设计

Optimized Design of Dynamic Performance of Long-span Pedestrian Overpass

以山东烟台某人行天桥为例,采用Midas Civil建立空间有限元模型,从经济、美观和舒适性方面对主梁结构进行优化设计,采用了调谐质量阻尼器(TMD)技术提高人行桥阻尼。参考德国指南叙述动力性能优化设计的原理并对TMD主要设计参数进行设计,给类似工程优化设计提供了可靠的借鉴经验。

Taking a pedestrian overpass in Yantai of Shandong as an example,the spatial finite element model is established by using Midas Civil.The main beam structure is optimized and designed from the economic,beautiful and comfortable aspects.The TMD technology is used to improve the overpass damping.Referring the German Guide to describe the principle of dynamic performance optimization and design,the main design parameters of TMD are designed,which provide the reliable referring experience for the optimization and design of the similar projects.