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该文以泗洪至许昌高速公路淮北段钢波纹管拱桥为例,利用有限元软件Midas/Fea建立了该桥的实际波纹形状有限元实体模型,根据现有的稳定分析理论,采用线性屈曲分析方法分析了车辆荷载作用下该桥的稳定性及影响因素。结果表明:该多孔波纹板桥稳定性能较好;稳定系数有随填土高度增加先增大后减小的趋势,并随着跨径的增大而减小;低覆土厚度情况下,波形较大的钢波纹板桥稳定性能比小波形的钢波纹板桥好。
Taking the steel bellows arch bridge of Huaibei section from Sihong to Xuchang expressway as an example, the actual corrugated finite element model of the bridge was established by finite element software Midas / Fea. Based on the existing stability analysis theory and linear buckling analysis Methods The stability and influencing factors of the bridge under vehicle load are analyzed. The results show that the stability of the perforated corrugated board bridge is better; the stability coefficient first increases and then decreases with the increase of fill height, and decreases with the increase of span diameter; Large steel corrugated board bridge stability than corrugated steel corrugated board bridge better.