论文部分内容阅读
按照空间组合有限元法的分析思路,采用大型有限元软件Midas/Civil建立了某异形拱桥全桥三维有限元模型。基于此,分析了该异形拱桥在恒载、活载、风荷载、温度荷载和移动荷载单独作用下,其主、副拱圈位移、内力和应力响应;总结了各荷载工况对主、副拱圈内力的影响程度,并分析了最大内力的产生部位;最后,分析了不同荷载组合工况下异形拱桥的受力特性,确定出其结构设计的最不利工况。以期为该类特殊结构形式拱桥的设计提供参考。
According to the analysis idea of the space combination finite element method, a three-dimensional full-bridge finite element model of a special-shaped arch bridge was established by using the large-scale finite element software Midas / Civil. Based on this, the displacement, internal force and stress response of the arch arch bridge under the action of dead load, live load, wind load, temperature load and moving load alone are analyzed. The influence of the internal force on the arch ring, and analyzes the location of the maximum internal force. Finally, the force characteristics of the arch bridge with different load combinations are analyzed and the most unfavorable condition of the structural design is determined. With a view to providing reference for the design of such special structure arch bridge.