大跨径钢-UHPC组合梁桥设计与整体受力分析

Design and Integral Force Analysis of Long-span Steel-UHPC Composite Girder Bridge

嘉兴市市区快速路环线工程跨越京杭大运河地面老桥龙凤桥,采用跨径布置为65 m+95 m+65 m的大跨径钢-UHPC连续组合梁方案,该方案在设计、施工和经济性方面都具有较显著的优势.采用Midas Civil 2021软件建立桥梁空间有限元模型,在承载能力极限状态和正常使用极限状态下各项验算均满足规范要求,可以为类似桥梁设计提供参考.

The span layout 65 m+95 m+65 m long-span steel-UHPC continuous composite girder scheme is adopted for Longfeng Bridge-an old bridge in Jiaxing Urban Expressway Project crossing the Beijing-Hangzhou Grand Canal.This scheme has the significant advantages in design,construction and economy.Midas Civil 2021 software is used to establish a finite element model of bridge space.Every checking calculation all meets the specification requirements under the ultimate limit states of bearing capacity and normal service,which can be referred for the design of the similar bridges.