摘要
对实腹式波形顶板-UHPC(超高性能混凝土)组合桥面板进行了改进,采用空腹式结构建立波形钢板-UHPC组合桥面板有限元模型,研究UHPC层厚度、波形钢板厚度、波形长度、下缘板宽度和波形高度等截面参数变化对组合桥面板受力特性的影响,并确定其合理取值范围.在此基础上,通过理想点法对参数组合进行优化,得到合理的参数匹配.研究结果表明:相较于实腹式组合桥面板,优化后的组合桥面板自重减小35%,钢板弯折处应力减小16%;相较于正交异性钢桥面板,桥面板用钢量减小7%,顶板与U肋连接位置应力减小47%.
Based on the spandrel-filled innovative corrugated steel-UHPC composite bridge deck,the FEM of the improved structure is developed by choosing an open-wed structure in this study.The effects of varied parameters including the UHPC layer thickness,the corrugated steel thickness,the wave length,the lower edge plate width,and the wave depths are studied and the feasible ranges are determined.The parameters’ combination is further optimized by the Ideal Point solution method,with which the reasonable parameter matching is established.Comparing with the spandrel-filled composite bridge deck,the weight is reduced by 35%,and the tensile stress in the bend of steel is reduced by 16%.Comparing with the orthotropic steel bridge deck,the steel quantity is reduced by 7%,and the tensile stress in the rib-to-deck weld joints is reduced by 47%.
作者
孙瑜
王焕然
王飞
朋茜
SUN Yu;WANG Huanran;WANG Fei;PENG Xi(Key Laboratory of Impact and Engineering of Ministry of Education,Ningbo University,Ningbo 315211,China;Engineering Research Centre of Industrial Construction in Civil Engineering of Zhejiang Province,Ningbo University of Technology,Ningbo 315211,China)
出处
《宁波大学学报（理工版）》
CAS
2020年第3期105-110,共6页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
国家自然科学基金(51478437)
浙江省自然科学基金(LQ20E080012,LQ20E080013).
关键词
组合结构
波形钢板
超高性能混凝土
桥面板
参数优化
composite structure
corrugated steel plate
UHPC
bridge deck
parameters optimization
