大跨度钢桁梁桥滑移施工中辅助结构力学分析及监控实施  

Mechanics analysis and monitoring of auxiliary structures in construction process of a long span steel truss bridge with translation method

作　　者：王利亚 张成才 李兆峰[1] 牛忠荣[1] WANG Liya;ZHANG Chengcai;LI Zhaofeng;NIU Zhongrong(School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China;Steel Structure Co.,Ltd.,Chi na Tiesiju Civil Engineering Group,Hefei 230022,China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]中铁四局集团钢结构有限公司,安徽合肥230022

出　　处：《合肥工业大学学报（自然科学版）》2018年第5期640-646,共7页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(11272111;11372094)

摘　　要：瑞昌至九江铁路工程桂竹林特大桥96m钢桁梁桥采用整体平移方法施工。为保证施工安全,文章分别建立临时墩和滑道梁结构的力学分析模型,对其滑移施工工况进行分析,采用有限元法计算了临时墩、滑道梁等施工辅助结构的应力和变形状态;采用现场试验监测辅助结构的高应力区,并对滑道梁力学分析模型、应力计算结果及试验结果进行了讨论与分析,确保了钢桁梁和辅助结构的施工安全和质量。The Guizhulin Bridge is a 96 mspan simply-supported steel truss bridge on Ruichang-Jiujiang Railway which was constructed with the translation method.In this paper,the mechanical models for the temporary piers and slipway-beams in the construction were established to ensure the construction safety.Then the finite element method was used to analyze the stress and deformation status of the auxiliary structures in the construction.Moreover,the site test was done to monitor the high stress zone of the auxiliary structures in the construction process.According to the results of the test and the finite element analysis,the mechanical model and the stress strength of the slipway-beam in the construction process were evaluated,which guaranteed that the auxiliary structures are safe and the steel truss bridge has good construction quality.

关 键 词：钢桁梁桥 施工 滑移法 力学分析 监控 

分 类 号：U445.46[建筑科学—桥梁与隧道工程]