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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, the finite element method and SAP-5 program are used to calculate the deflection, internal force and stress of the combined thin-walled rib arch bridge. The static test results and approximate calculated values of the two bridges are compared and analyzed. It is a reasonable structure of small and medium-sized bridges. It can be applied in suitable conditions (including high-grade highways and urban bridges) and put forward specific suggestions for its simplified design.