中小跨径多梁式钢混组合梁桥的简要设计指南

目前国内一些市政桥梁因通行能力需要,桥面设计得比较宽。更宽的桥面就需要更多的主梁或是增加主梁截面尺寸。对于有一定设计高度要求的桥梁,一般采用多主梁形式的结构。现通过现阶段中小跨径多梁式钢混组合梁桥的应用实践情况,以及设计施工规范,对其设计及施工方面提出一些简要设计指南及相关方面的建议。

Brief Design Guide of Small-span and Middle-span Multi-beam Steel-concrete Composite Girder Bridges

At present,the decks of some municipal bridges are designed to be wide because of the traffic capacity needs in China.Wider decks need more main girders or increase the section dimension of the main girder.For the bridges with a certain design height requirement,the multi-girder structure is generally adopted.According to the practical application of small-span and middle-span multi-beam steel-concrete composite girder bridges in the present stage,and based on the design construction specifications,some brief design guides and the relative proposals are put forward for the design and construction of the bridges.