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通过有限元法建立斜靠式钢管混凝土拱桥的结构模型,采用反应谱理论对桥梁结构进行了抗震性能分析,并计算其动力特性。对考虑结构初应力与不考虑结构初应力两种工况做了比较,结果表明,初应力对该桥结构的力学性能影响不大,桥梁结构的抗震性能良好。
The structural model of the rectilinear CFST arch bridge was established by finite element method. The seismic behavior of the bridge structure was analyzed by response spectrum theory and its dynamic characteristics were calculated. The results show that the initial stress has little effect on the mechanical properties of the bridge structure and the seismic performance of the bridge structure is good.