大跨径连续曲线梁桥抗倾覆稳定性分析

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【中图分类号】：U441 【文献标志码】：A 【文章编号】：1008-3197（2025）04-17-04

【DOI编码】：10.3969/j.issn.1008-3197.2025.04.005

Stability Analysis of Long-span Continuous Curved Girder Bridge Anti-overturning

HEXingwen，LIANGJiahao'，SHILei²，GUOZihua²

1.SchoolffrastructureEngineering，alianUniversityofTehnology，Dalian64，China;2.DesignInstituteofCivilEig &Architecture of DalianUniversity of Technology Co.，Ltd.，Dalian116ooo，China）

【Abstract】：Toanalyzetheanti-overturningstabilityoflong-spancurvedgirderbridgesundertraffcloads，theself-developed vehicle-bridge coupling vibration analysis program wasunutilized toestablish a three-dimensional finite elementbridge modelanda17-degree-of-freedomvehicle dynamic model.The vehicle-bridgecoupling vibration equation wasderived based onthe finite element method and d'Alembert's principle.A numerical simulation FORTRAN program was developed based on the modal superposition method and Newmark- β numericalintegration method to investigatethe response characteristicsofvehicle speed，vehicledriving eccentricity，bridge support spacing and other factors on the bridge support reaction.The influence of these factors on the bridge anti-overturning stability was analyzed.

【Keywords】：curved girder bridge；vehicle-bridge coupling；anti-overturning

随着我国交通基础设施建设的发展，为了适应路线设计需要并提升整体美观性，越来越多的曲线梁桥被广泛应用于公路交通中。（剩余3295字）