一座无加劲弦连续钢桁拱桥结构设计与施工

Structural Design and Construction of a Continuous Steel Truss Arch Bridge Without Stiffening String

以一座跨河市政连续钢桁拱为工程背景,介绍了一种无加劲弦连续钢桁拱结构,对主桁、钢桥面、双吊杆、联结系、施工方案进行了说明,阐述了设计应考虑的因素,重点分析了主桁片数选择、节间长度、钢桥面杆件布置及传力,为同类型连续钢桁拱设计提供参考。

Taking a municipal continuous steel truss arch crossing the river as the engineering background,a kind of continuous steel truss arch structure without stiffening string is introduced,the main truss,steel bridge deck,double suspenders,coupling system and construction scheme are illustrated,the factors that should be considered in the design are elaborated,and the selection of main truss number,the length of joints,the member bar arrangement of steel bridge deck and force transmission are mainly analyzed,so as to provide reference for the design of the continuous steel truss arch of the same type.