钢拱桥边跨三角区扁平钢箱梁剪力滞影响研究  

Study on shear lag effect of flat steel box girder of side span triangle area of steel arch bridge

作　　者：张东 赵洪蛟 管锡琨 丁毅 ZHANG Dong;ZHAO Hongjiao;GUAN Xikun;DING Yi(Shandong Provincial Communications Planning and Design Institute Group Co.,Ltd.,Shandong Jinan 250101 China)

机构地区：[1]山东省交通规划设计院集团有限公司,山东济南250101

出　　处：《山东交通科技》2023年第4期97-99,共3页

摘　　要：为了研究扁平钢箱梁的剪力滞效应对大跨径钢拱桥边跨三角区刚度的影响,分别建立了梁单元模型和梁壳混合单元模型,结果表明:该扁平钢箱梁的剪力滞后导致边跨三角区刚度减小,使得钢箱梁和拱肋的挠度比按全截面有效的梁单元计算的结果大。In order to study the influence of the stiffness of side span of large span steel arch bridge by the shear lag effects of flat steel box girder,beam element model and beam shell hybrid element model are built.The results show that the stiffness of side span is reduced due to the reduction of the stiffness of section,so that the deflection of steel box girder and arch rib is bigger than the results obtained by beam element model of full effective section.

关 键 词：钢拱桥边跨三角区 扁平钢箱梁 梁壳混合单元 剪力滞效应 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]