变截面钢-混凝土组合连续桁梁桥设计与施工

Design and Construction of Variable Cross-section Steel-Concrete Continuous Composite Truss Girder Bridge

钢桁架-混凝土组合桥梁是组合结构桥梁的一个重要分支。虽然我国起步较晚,钢桁架-混凝土组合桥梁更是少之又少,但该结构经济效益佳,并能兼顾美学功能,因此在国内具有广阔的发展空间。现以北京顺于路西延跨温榆河桥为例,总结变截面钢-混凝土组合连续桁梁桥的设计、建造要点,并提出措施优化设计、施工。

The steel truss-concrete composite girder bridge is an important branch of the composite structural bridge.This kind of bridge is very few because of its start relatively late in China,but this kind of structure has a good economic benefit,and can take into account the aesthetic function.Therefore,its development space is wide in China.Taking a bridge across Wenyu River in Shunyu Road of Beijing as an example,the article summarizes the design and construction gist of variable cross-section steel-concrete continuous composite truss girder bridge,and puts forward the measures to optimize its design and construction.