某室外景观钢拱桥设计

Design of an Outdoor Landscape Steel Arch Bridge

某室外小区景观桥采用钢拱桥结构形式,拱桥跨度约为11m。采用Midas GEN进行建模、设计和截面校核,分别进行了强度验算、刚度验算以及舒适度验算。针对拱形结构会产生跳跃失稳问题,采用ABAQUS进行了特征值屈曲分析和非线性屈曲分析(材料非线性和几何非线性)。针对拱形结构水平推力大的问题,进行了桩基抗水平力、抗倾覆验算。通过计算分析,该钢拱桥满足规范的强度、刚度、舒适度、稳定性、地基承载力要求。

An outdoor community landscape bridge is a steel arch structure, its arch bridge span of about 11 meters. Steel arch bridge using Midas GEN to carry out modeling, design and cross-section check, and completes the strength checking, stiffness checking and comfort checking. Aiming at the problems of jump instability of the arch structure, the buckling analysis and nonlinear buckling analysis(material nonlinearity and geometric nonlinearity) are carried out by ABAQUS. Aiming at the problem that the horizontal thrust of the arch structure is large, the pile foundation is resistant to the horizontal force and the anti-overturning check. Through the calculation and analysis, the steel arch bridge meets the norms of strength, stiffness, comfort,stability, foundation bearing capacity requirements.