摘要
以钢管式桥梁栏杆结构为研究对象,采用现场加载试验与有限元分析法相结合方式,探讨传统的钢管式栏杆结构是否满足《城市桥梁设计规范》强制性修订条文设计性能要求;在此基础上进一步分析了立柱间距L、立柱与扶手构件厚度D、栏杆高度H 3个主要设计参数变化对结构性能的影响规律。结果表明:传统的钢管式桥梁栏杆结构满足规范条文要求,安全储备系数较高;当立柱间距L大于2 200 mm时扶手水平变形率会急剧增大,且栏杆的抗侧移能力与立柱和扶手构件厚度参数呈正相关性而与栏杆高度参数呈负相关性。
Taking steel tubular bridge balustrading structure as the research object,this paper discusses whether the traditional steel tubular balustrading structure can meet the design performance requirements of compulsory amendment clause 10.0.7 in 2019 Edition of Urban Bridge Design Code(CJJ 11—2011)by combining field loading test and finite element analysis method.On this basis,the influence law of the three main design parameters on the structural performance was further analyzed,including column spacing L,column and handrail thickness D,and railing height H.The results show that the traditional steel tube bridge railing structure meets the requirements of the code,and the safety reserve coefficient is high.When the column spacing L is greater than 2200 mm,the horizontal deformation rate of the handrail will increase rapidly,and the lateral displacement resistance of the railing is positively correlated with the thickness parameters of the column and handrail components,but negatively correlated with the height parameters of the railing.
作者
徐丹
林建茂
XU Dan;LIN Jianmao(Fujian Provincial Transportation Research Insititute Co.Ltd.,Fuzhou Fujian 350004,China)
出处
《盐城工学院学报（自然科学版）》
CAS
2020年第3期57-61,共5页
Journal of Yancheng Institute of Technology:Natural Science Edition
关键词
钢管式栏杆
结构性能
设计参数
试验
有限元分析
steel tube railing
structural performance
design specification
test
finite element analysis
