自锚式悬索桥钢-混结合段局部受力分析  

Local Stress Analysis of Steel and Concrete Joint Section of Self-anchored Suspension Bridge

作　　者：许世展 怀臣子[2] 杨纪[2] 梁岩[1] XU Shizhan;HUAI Chenzi;YANG Ji;LIANG Yan(School of Civil Engineering,Zhengzhou University,Zhengzhou,Henan 450001,China;Huanghe Investigation Survey,Planning and Design Co.,Ltd., Zhengzhou,Henan 450001,China)

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]黄河勘测规划设计有限公司,河南郑州450001

出　　处：《公路工程》2019年第5期1-3,30,共4页Highway Engineering

基　　金：国家自然科学基金项目(51608488)

摘　　要：为了解自锚式悬索桥钢-混结合段局部应力分布和连接件受力特点及是否满足设计要求,以怀化市高堰西路舞水自锚式悬索桥为背景,建立该桥钢-混结合段局部分析精细化空间有限元模型。对最大轴力、最大竖向弯矩、最大竖向剪力等力学性能进行分析,研究钢结构、混凝土及螺栓等主要受力构件应力分布和受力情况。结果表明,钢-混结合面处内力值较大,除混凝土拉应力值超限外,结合段钢结构及螺栓应力安全,建议对于应力水平高的混凝土结构局部优化配筋,增加构造钢筋。研究成果可为同类桥梁设计、施工提供技术参考。To investigate the local stress distribution and connectors’ stress characteristicsofsteeland concrete joint section of self-anchored suspension bridge.The WuShui BridgeofGao yanxi Road in Huaihua was cited as an example toset up the three-dimensional model.The loadcases ofmaximum axial force,vertical bending moment and vertical shear force were analyzed to research the stressdistribution and force conditions of the steel-concrete structure and the bolt ofthe joint section in the construction.The results show because of the largeinternal force of joint surface,the stress force of concrete overrun the standard.The stressof steel structure and bolt have good engineering precision.It’s suggested that concretestructure with high stress level should optimize the reinforcement and increasestructuralreinforcement.The results can provide technical reference for the design and construction of similar bridges.

关 键 词：自锚式悬索桥 钢-混结合段 荷载工况 有限元 局部应力分析 

分 类 号：U441[建筑科学—桥梁与隧道工程]