提篮式系杆钢拱桥顶推施工仿真分析  

Simulation Analysis of Incremental Launching Construction of Basket Handle Tied Steel Arch Bridge

作　　者：何德华 杨创捷[1,2] 曹钰 HE De-hua;YANG Chuang-jie;CAO Yu(Guangzhou No.3 Municipal Engineering Group Co.,Ltd.,Guangzhou 510060;Guangzhou Municipal Engineering Group Ltd.,Guangzhou 510060)

机构地区：[1]广州市第三市政工程有限公司,广州510060 [2]广州市市政集团有限公司,广州510060

出　　处：《广州建筑》2024年第9期6-9,共4页GUANGZHOU ARCHITECTURE

基　　金：广东省住房和城乡建设厅科技创新计划(2022-K4-022465);广州市建筑集团有限公司科技计划项目(BH20230315563);广州市市政集团有限公司十四五规划科技创新培育基金([2023]-SZKJ08)。

摘　　要：为研究提篮式系杆钢拱桥顶推过程中的力学性能及安全性,以某工程一座跨高速公路施工的提篮式系杆钢拱桥顶推施工为例,采用Midas/Civil有限元软件建立全桥模型,并对顶推施工全过程进行精细划分和研究。结果表明:顶推过程中有4个工况较为不利,应重点关注及分析;顶推过程中A撑在提高结构的整体性方面发挥了明显的作用,导梁在减少主梁挠度方面发挥了关键作用;顶推施工全过程的强度、刚度及对临时支架产生的支反力均满足要求。To study the mechanical properties and safety of a basket style tied steel arch bridge during the top pushing process,taking.the top pushing construction of a basket style tied steel arch bridge spanning a superhighway in a certain project as an example,Midas/Civil finite element software was used to establish a full bridge model,and the entire top pushing construction process was finely divided and studied.The results show that there are four unfavorable conditions in the pushing process,which should be paid attention to and analyzed.In the process of incremental launching,A-shaped support plays a significant role in improving the integrity of the structure,and the guide beam plays a key role in reducing the deflection of the main beam.The strength,stiffness and reaction force of the temporary support in the whole process of incremental launching construction meet the requirements.

关 键 词：钢拱桥 顶推 全过程 仿真分析 A撑 导梁 

分 类 号：U445.1[建筑科学—桥梁与隧道工程]