下承式钢管混凝土刚架系杆拱桥拱脚有限元应力分析  

FEM stress analysis of springing joint for CFST and rigid frame tied through arch bridge

作　　者：彭桂瀚[1] 陈宝春[1] 孙潮[1] 

机构地区：[1]福州大学土木工程学院,福建福州350002

出　　处：《福州大学学报（自然科学版）》2007年第1期85-88,共4页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省重大科技基金资助项目(2003F007)

摘　　要：采用三维块体单元,进行了大汾北水道特大桥拱脚结点空间有限元分析.计算结果表明:拱脚结点以纵桥向受压为主,结点内部应力分布较均匀,总体受力合理,满足设计要求.但施工中应注意刚度突变处以及预应力锚点等应力集中区域的施工质量,并建议进行局部钢筋网的加强,便于应力的分散.The spatial FEM analysis of springing joint for Dafenbei Shuidao Bridge is carried out in this paper by using 3D solid element. The results show that the main inner force in springing is compressed stress which distributing uniform. It means that the design of this bridge is reasonable. But the local structure reinforcing should be placed in the places where the rigidity changed abruptly, in order to disperse stress.

关 键 词：钢管混凝土 拱桥 刚架系杆拱 拱脚 有限元 

分 类 号：U433.23[交通运输工程—道路与铁道工程]