刚架拱桥拱索加固体系的受力特性  

Mechanical behavior of rigid frame arch bridge strengthened by stayed cable

作　　者：潘仁泉 项贻强 余泉[2] 陈向阳[2] 

机构地区：[1]浙江省公路管理局,浙江杭州310006 [2]浙江大学交通工程研究所,浙江杭州310027

出　　处：《长沙理工大学学报（自然科学版）》2007年第1期34-38,共5页Journal of Changsha University of Science and Technology:Natural Science

基　　金：浙江省交通厅科研资助项目(2004H08)

摘　　要：对某钢筋混凝土刚架拱桥提出了采用拱索体系的加固方法,用空间有限元对其受力特性进行了分析,并与试验测试值进行了比较.研究结果表明,对于用钢缆索斜拉法加固刚架拱桥的新结构,其空间受力效应明显;对处于软土地基上的桥的动力特征分析,必须考虑桥台与地基土壤之间的弹性抗力作用;原拱桥的面外刚度比面内刚度大,反映原拱桥具有足够的横向刚度.Aiming at a typical reinforced concrete rigid frame arch bridge, the method for strengthening a concret rigid frame arch bridge by stayed cable is put forward. The static and dynamic behaviors are analyzed. The results from field testing show that the spatial effect of reinforced concrete rigid frame arch bridge strengthened by stayed cable is notable and analyzing. The dynamic behaviors in soft and weak soil foundation must be analyzed when the elastic resistance between abutment and soil foundation is considered. The stiffness of an out-plane structure is larger than that in-plane and the crude structure which have enough transverse stiffness.

关 键 词：钢筋混凝土 刚架拱桥 加固 钢缆索斜拉法 受力特性 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]