【作者】 陈大柱； 丁勇； 布占宇； 黄剑源；

【Author】 CHEN Dazhu~1,DING Yong~2,BU Zhanyu~2,HUANG Jianyuan~2 (1.Yinzhou Area Traffic Bureau,Ningbo 315100,China;2.Department of Civil Engineering,Ningbo University,Ningbo 315211)

【机构】 宁波市鄞州区交通局； 宁波大学土木工程系；

【摘要】 采用基于实体有限元的分析方法,对某公路匝道曲线箱梁桥进行了抗倾覆分析,并提出了加固方案。结果表明,实体有限元模型合理反映了曲线梁桥的受力特性,是一种高精度的抗侧倾分析方法。以双支座代替单支座,或者拉大支座横向间距都可以避免曲线梁桥的侧倾,可以通过数值仿真与比选寻求经济有效的加固方法。更多还原

【Abstract】 The anti-overturning analysis of a curved box girder bridge in highway ramp was performed based on solid finite element method,and the scheme of structural reinforcement was presented.The results indicate that the mechanical characteristics of curved girder bridge can be reflected accurately by solid finite element method, and it is an efficient method for anti-overturning analysis with high precision.The overturning of the curved bridge could be avoided by replacing the single support with the double supports or lengthening the space with supports,and the most economical and effective approach can be explored by numerical simulation.更多还原