单箱双室连续刚构桥主梁剪力滞影响因素研究  

Influencing factors of shear lag of main girder of single box and double chamber continuous rigid frame bridge

作　　者：曾勇[1,2] 刘新[1,2] 谭红梅[1,2] ZENG Yong;LIU Xin;TAN Hong-mei(State Key Laboratory of Mountain Bridge&Tunnel Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Research Center for Mountain Bridge&Materials Engineering of Ministry of Education,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学山区桥梁与隧道工程国家重点实验室,重庆400074 [2]重庆交通大学山区桥梁结构与材料教育部工程研究中心,重庆400074

出　　处：《河南城建学院学报》2020年第4期1-7,共7页Journal of Henan University of Urban Construction

基　　金：国家自然科学基金资助项目(51478071);重庆市留学人员回国创业创新支持基金(cx2018113);山区桥梁与隧道工程国家重点实验室培育基地开放基金(CQSLBF-Y14-3,CQSLBF-Y16-10)。

摘　　要：以某大跨度连续刚构的悬臂根部截面为参考截面,分别建立空间实体模型和杆系模型,分析箱梁在不同几何参数(宽跨比、宽高比、顶板厚度、腹板厚度以及承托尺寸)下单箱双室箱梁剪力滞效应的变化规律,分析箱梁在不同荷载(集中力、均布力)作用下剪力滞效应的变化规律。Taking the cantilever root section of a long-span continuous rigid frame as reference section,different spatial models and bar models are established to analyze the shear lag effect of single box double chamber box girder with different geometric parameters(width span ratio,width height ratio,roof thickness,web thickness and support size),and the shear lag effect of box girder under different loads(concentrated force and uniform force)is analyzed The law of change.

关 键 词：单箱双室 连续刚构桥 正应力 剪力滞 宽跨比 宽高比 

分 类 号：U412.33[交通运输工程—道路与铁道工程]