波折腹板组合箱梁桥结构体系分析

Analysis of Structural System of Box Girder Bridge Composited with Corrugated Steel Webs

通过用波折钢腹板代替混凝土腹板,箱梁的顶、底板及其腹板相互间不受到约束,能够减小徐变、干燥收缩、温差的影响,从而达到主动控制设计的目的。依据大量的实桥数据,详细地论述了波折腹板组合箱梁桥的结构布置特点、截面各组成部分的连接形式、腹板尺寸的取值等设计方法。

The way to substitute corrugated steel webs for concrete webs of a box girder bridge will result in no restraint among the upper deck slab, lower deck slab and webs of the bridge, alleviate influences due to concrete creep, drying shrinkage and temperature differences, and consequently achieve the purpose of an active control design. On the basis of the massive data of the observed bridges, this paper describes in details the design method for the box girder bridge composited with corrugated steel webs, including structural layout, connections of all parts of the girder section and determination of web size values of the type of the bridge. 