设有纵向连杆的异型拱桥受力性能分析  

Stress Performance Analysis of Special-shaped Arch Bridge with Longitudinal Linkage

作　　者：申永刚[1] 项贻强 言明忠 朱卫国[3] 

机构地区：[1]浙江大学建工学院,浙江杭州310027 [2]嘉兴市中路交通设计有限公司,浙江嘉兴314001 [3]江苏省交通规划设计院,江苏南京210005

出　　处：《中国市政工程》2007年第5期18-20,共3页China Municipal Engineering

摘　　要：在两异型拱之间设置纵向连杆的异型拱桥设计思路,可更好地满足桥梁美学要求。通过南通机耕桥的工程实例计算,发现设置纵向连杆后,拱肋的结构内力发生较大变化,尤其是相连拱肋截面的剪力明显增大,同时全桥拱肋的面外稳定性有所减弱,但全桥整体刚度和自振频率得到提高。由此说明,该方法在异型拱桥的实际设计中是可以采用的。The idea can meet with the bridge aesthetics better that is to install the longitudinal linkage between 2 special-shaped arches.Through the project calculation of Jigeng Bridge in Nantong,the structure internal force of arch rib was changed greatly,especially the shearing force of the contiguous arch rib sections was strengthened evidently after installing the longitudinal linkage.Meanwhile,the external stability of the whole arch rib was lowered but the total rigidity of the whole bridge and natural frequencies were improved.The results showed that the idea should be adopted in the practical design of special-shaped arch bridge.

关 键 词：异型拱桥 纵向连杆 桥梁美学 受力性能 

分 类 号：U448.220.15[建筑科学—桥梁与隧道工程]