摘要
本文采用有限元法和SAP-5程序系统计算了组合式薄壳肋拱桥的挠度、内力和应力,并和两座桥的静态试验结果和近似计算值作了对比分析,充分肯定了新桥型是中小型桥梁的一种合理构造形式,在条件适宜的地区(包括高等级公路和城市桥梁)可以推广应用,并对其简化设计方法提出了具体建议。
In this paper, we analyse the deflection internal forces and stress of the composite two-way curved rib arch bridge by the finite clement method and the SAP-5 program, comparing the calculation results with those of the static load test and a approximate calculation method of two bridges, demonstrate that this new bridge is a reasonable structure and it can be spreaded and applied in suitable condition place (include high-degree Highways and city bridges). Finally, the simplized method are advanced.
关键词
薄壳
节点
板单元
疲劳破损
拱桥
thin shell, rib arch, gusset, plate element, fatigue fracture
