异型系杆拱桥

Variant Tied-Arch Bridge

一般系杆拱桥的吊杆是竖直向布置的，其合理拱轴线为对称曲线，若将吊杆按一定斜率斜向布置，便可开发出一种合理拱轴线为偏态曲线的新型桥梁结构即异型拱桥结构、理论分析和实桥设计表明，异型拱桥结构合理、造价经济、施工方便，特别是其外型美观别致、适用范围广，值得推广。

The suspenders are vertical in an ordinary tied arch bridge with symmetric optimal arch axis.If the suspenders are inclined, the optimal arch axis will be unsymmetric.In'the light of theoretical analysis and design,a new type of bridge-the variant tied--archbridge is developed and presented in the paper.The variant tied-arch bridge is eaSy toconstruct and aesthetic in appearance, adaptable to wide range of application with good economic benefit.