既有双曲拱桥承载能力的空间分析与评估  

Spatial Analysis and Loading Capacity Assessment of Existing Double-curvature Arch Bridge

作　　者：李金枝[1] 

机构地区：[1]广州市市政工程设计研究院,广州510060

出　　处：《交通科技》2010年第3期7-9,共3页Transportation Science & Technology

摘　　要：采用有限元法建立既有双曲拱桥的空间模型,运用空间分析对双曲拱桥的承载能力进行评定。以阳头大桥为工程实例,利用上述建模方法建立了该桥的实体有限元模型,计算了主拱圈在自重作用下的应力。在有限元模型中进行加载仿真计算,将有限元计算结果与荷载试验实测值进行对比,以评定实桥的承载能力。The spatial analysis of existing double-curvature arch bridge by making use of finite element method is presented,by which the loading ability can be evaluated. The finite element model of double-curvature arch bridge is established and internal force caused by self-gravity of main arch is calculated. The result of finite element method is compared with that determinated by load experiment. According to the above work,loading capacity of double-curvature arch bridge can be obtained.

关 键 词：双曲拱桥 承载能力 有限元法 

分 类 号：U448.221[建筑科学—桥梁与隧道工程]