长大直径钢护筒临时墩的力学性能及加强措施研究  

The mechanical properties and strengthening measures of temporary pier of steel tube with long-large diameter

作　　者：李刚[1] 冯霄暘 钟芮 闫光飞 杜柏松[1] 

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]云南开发规划设计院,昆明650000

出　　处：《中国科技论文》2016年第19期2236-2242,共7页China Sciencepaper

基　　金：重庆交通大学研究生教育创新基金资助项目(20160112)

摘　　要：结合在建的重庆轨道交通环线高家花园大桥边跨支架施工方案,综合利用MIDAS/civil和MIDAS/GTS NX有限元软件详细分析了在边跨支架中使用的长大直径钢护筒临时墩的受力情况,尤其是针对其稳定性进行了特别研究,并提出钢护筒内不同的砂土填筑高度对其稳定性的影响趋势。通过对施工过程中钢护筒的全程实时监测,采集了不同工况下的数据,并与理论值进行了对比,未发现任何异常情况,为同类工程的施工提供了参考。Considering the side span support construction scheme of Chongqing rail link garden Gao Bridge, the stress situation of temporary pier of long diameter steel casing used in the proiect was analyzed in this paper analyzes with special research into its stability. The influence of different sand filling height on the stability of steel liner was evaluated by using MIDAS / civil and MI- DAS / GTS NX synthetically. Through the real-time monitoring for the entire construction process of the steel casings, data un- der different conditions were collected and compared with the theoretical value. No abnormal situation was found. This paper pro- vides improvements for similar projects, also reference and experience for the construction of similar projects in the future.

关 键 词：长大直径钢护筒 有限元分析 重庆轨道交通环线 稳定性 力学性能 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]