下承式钢管混凝土系杆拱桥力学特性分析  

Analysis of Mechanical Characteristics of the Through CFST Arch Bridge

作　　者：张通[1] 孙建平 季日臣[1] 范琴锋[1] 石明星[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]陕西省红柠铁路公司,陕西榆林719300

出　　处：《甘肃科学学报》2010年第1期138-141,共4页Journal of Gansu Sciences

基　　金：兰州交通大学"青蓝"人才工程基金项目(QL-05-13A)

摘　　要：根据格丑沟特大桥主桥——下承式钢管混凝土系杆拱桥的结构特点,利用有限元程序Midas,计算出了全桥的轴力、剪力、弯矩,以及整体的稳定安全系数.分析探讨了桥的静力特性、动力特性和稳定性,为该桥的设计和施工提供了参考,也为桥梁在运营过程中的健康检测和维护提供了基础性数据,对于改进同类拱桥的结构布置和设计具有参考意义.According to the structural characteristics of the long-span through CFST （concrete-filled steel tube） arch bridge（Gechougou main bridge in Shaanxi）,the finite element software Midas is used to calcu- late the axis force, shearing force, bending moment, and all the coefficients of stability and safety. We have analyzed and discussed the static,dynamic and stable characteristics of the bridge, for they play a great role for its design and construction. Significant technical parameters and basic statistics are given here for its detection and maintenance. They can be used as references in building similar arch bridges.

关 键 词：钢管混凝土 下承式拱桥 有限元方法 静力特性 动力特性 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]