Effects of Arch Installation Sequence on the Mechanical Response of an Arch-Steel Girder Structure
-
摘要: 以我国西北地区首座公轨两用钢桁梁桥为研究背景,利用ANSYS有限元软件建立顶推施工模型,对比分析了拱的两种施工顺序对结构的力学性能影响。结果表明:当拱的施工顺序采取先梁后拱施工时,结构的应力较小,更有利于结构的稳定;当拱的施工顺序采取梁拱共同施工时,结构的位移较小,这是由于拱形结构的存在,不仅对主梁提供了较大的竖向刚度,而且具有较好的分散桥梁自重的作用。Abstract: This study takes the first dual-purpose steel truss bridge in northwest China as the research background. Using ANSYS finite element software, a finite element model for incremental launching construction was established to analyze and compare the effects of two different arch construction sequences on the mechanical properties of the structure. The results showed that the construction sequence of erecting the girder prior to the arch resulted in lower structural stress, which proved more conducive to structural stability. In contrast, the “girder-and-arch simultaneous construction” sequence resulted in relatively smaller structural displacement. This was because the presence of the arch not only provided substantial vertical stiffness to the main girder but also effectively helped distribute the bridge’s self-weight.
-
Key words:
- steel truss bridge /
- finite element model /
- arch construction sequence /
- arch structure
-
[1] 许三平. 中国铁路桥梁“走出去”的几点思考[J]. 铁道标准设计,2021,65(3):93-98. [2] 高义奇,林超伟,刘红星,等. 长沙国际会议中心大跨钢桁架受力性能分析与设计[J]. 建筑结构,2023,53(4):93-100. [3] 谭敏刚,李军平,车平. 下承式钢桁拱桥制作安装技术[J]. 钢结构(中英文),2021,36(8):42-49. [4] Yarnold M,Salaman S,James E. Deconstruction monitoring of a steel truss bridge[J]. Transportation Research Record,2017,2642(1):139-146. [5] Ma C F,Huang P M,Hao Z G,et al. Research on standardized structure and construction technology of steeltruss bridge with 40 m span[J]. Earth and Environmental Science,2019,371(2),022081. [6] Ding S H,Fang J,Zhang S L,et al. A construction technique of incremental launching for a continuous steel truss girder bridge with suspension cable stiffening chords[J]. Structural Engineering International,2021,31(1):93-98. [7] 潘军. 帕德玛大桥主桥150 m跨连续钢-混组合梁施工技术[J]. 桥梁建设,2021,51(5):8-13. [8] 陈星宇,徐昕宇,宋晓东,等. 考虑附加变形的公路-磁浮合建桥车桥耦合动力响应研究[J]. 桥梁建设,2021,51(2):71-77. [9] 刘传志,妥鹏. 平潭海峡公铁两用大桥元洪航道桥桥塔墩顶钢梁施工技术[J]. 世界桥梁,2019,47(2):39-43. [10] 吴楠. 跨铁路预应力混凝土箱梁顶推施工监控与分析[D]. 西安:长安大学,2019. [11] 王立国,廖巍葳,张振雨,等. 山东渤海先进技术研究院巨型钢桁架设计[J]. 建筑结构,2022,52(增刊1):1155-1158. [12] Wang L,Wang H,Li L,et al. An adjustment method for the suspender tension of CFSTTTHAB based on influence matrix of single suspender[J]. Advances in Civil Engineering,2020,20(20):1-10. [13] 赵中伟. 大跨度双螺旋单层网壳施工分析优化及温度效应研究[D]. 天津:天津大学,2016. -
点击查看大图
计量
- 文章访问数: 20
- HTML全文浏览量: 5
- PDF下载量: 1
- 被引次数: 0



登录
注册
下载: