基于曲线变宽连续箱梁的单梁法和梁格法对比研究  

Comparative Study on Single Beam Method and Grillage Method Based on Curve Widened Continuous Box Girder

作　　者：刘世刚 LIU Shigang(CCCC Comprehensive Planning and Design Institute Co.,Ltd.,Beijing 100024,China)

机构地区：[1]中交综合规划设计院有限公司,北京100024

出　　处：《工程技术研究》2023年第18期48-50,共3页Engineering and Technological Research

摘　　要：文章以某匝道桥为工程案例,利用桥梁博士V4.4.1有限元软件计算方法中的单梁法和梁格法分别对该桥进行建模分析计算,对比了两种计算方法计算所得支反力、内力及结构刚度结果的差异,证实了在曲线梁桥设计计算分析中,梁格法相比单梁法更能反映实际受力特征,同时提出了两种计算方法的选取建议,旨在为工程设计人员选用曲线梁桥计算方法提供一定的借鉴。Taking a ramp bridge as an engineering case,this paper uses the single beam method and the grillage method in the calculation method of Dr.Bridge V4.4.1 finite element software to model,analyze and calculate the bridge respectively.The difference in the results of support reaction force,internal force,and structural stiffness calculated by the two calculation methods is compared.It is confirmed that the grillage method can better reflect the actual stress characteristics than the single beam method in the design and calculation analysis of curved beam bridges.At the same time,the selection suggestions of the two calculation methods are put forward,aiming to provide some reference for engineering designers to choose the calculation method for curved beam bridges.

关 键 词：曲线变宽箱梁 单梁法 梁格法 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]