钢管桁架加劲梁——悬索桥简介

Brief Introduction of Steel Pipe V-Truss-Stiffened Beam of Suspension Bridge

忠县长江大桥设计为钢管桁架加劲梁悬索桥 ,主跨为 5 6 0 m,全长 1199.73m,高塔薄壁 ,隧道式锚碇和岩锚 ,结构设计合理。尤其是钢管桁架加劲梁抗弯、抗扭较好 ,风荷载小 ,又无方向性影响 ,构造物轻巧美观 ,重量较钢桁梁轻 1/ 3,较钢箱梁轻 1/ 2 ,该桥型在节省材料、缩短工期。

The 1199.73 meter long Yongtse River Bridge in Zhongxian county is designed as a v truss stiffened beam suspension bridge with span 560 meters, high and thin wall tower, tunnel type anchors and rock anchors. Its structural design is very reasonable, especially to the steel pipe v stuss stiffened beam of the bridge. The beam can resist to the bend and twist very well, the wind burden of the beam is also small and there is no orientation influence. The tectonic substance of the beam is light and artistic. The weight of the beam is only two thirds of a “steel truss beam” or one half of a “steel box beam”. It has the superiority of saving materials, shortening the time limit for the project and economizing in cost of building the bridge.