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| 钢管式桥梁栏杆结构性能及设计参数研究 |
| Research on Structural Performance and Design Parameters of Steel Tube Bridge Railing |
| 投稿时间：2020-03-03 |
| DOI：10.16018/j.cnki.cn32-1650/n.202003011 |
| 中文关键词: 钢管式栏杆 结构性能 设计参数 试验 有限元分析 |
| 英文关键词: steel tube railing structural performance design specification test finite element analysis |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 2 200 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. |
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