大悬臂连续钢桁梁横移施工过程分析及监控  

Analysis and Monitoring of the Construction Process of Large Cantilever Continuous Steel Truss Girder Transverse Movement

作　　者：杨书生 崔凤坤 滕兆宝 丁江云 YANG Shu-sheng;CUI Feng-kun;TENG Zhao-bao;DING Jiang-yun(Shandong Weilai High Speed Railway Co.,Ltd.,Jinan,Shandong 250102,China;ShanDong JiaoTong University,Jinan,Shandong 250357,China;Shandong Zhongkan Engineering Technology Co.,Ltd.,Qingdao,Shandong 266033,China)

机构地区：[1]山东潍莱高速铁路有限公司,山东济南250102 [2]山东交通学院,山东济南250357 [3]山东中勘工程技术有限公司,山东青岛266033

出　　处：《黑龙江交通科技》2021年第12期93-95,共3页Communications Science and Technology Heilongjiang

摘　　要：横移施工过程中,由于连续钢桁梁一端处于大悬臂状态,安全风险因素较多,因此施工过程分析与监控至关重要。为确保施工安全,建立该桥在整个施工过程中临时支架、滑道梁以及钢桁梁的有限元模型,通过对各结构在施工全过程的应力和线性进行分析,同时对整个施工过程各个结构的应力和线形进行监测,结果表明:各结构应力和线形均满足安全施工要求,合理的支架设计可以保证结构应力和变形可控,滑块变形会对桥梁挠度监测有一定影响。During the traverse construction process,the analysis and monitoring of the construction process is very important,because one end of the continuous steel truss beam is in a large cantilever state and there are many safety risk factors.In order to ensure the safety of construction,the finite element model of the temporary support,slide beam and steel truss beam of the bridge was established during the whole construction process.The model can analyze the stress and linearity of each structure during the whole construction process.At the same time,each structure of the whole construction process was monitored.The results show that the stress and line shape of each structure meet the requirements of safe construction.Reasonable support design can ensure the controllable structure stress and deformation.The deformation of the slider will have a certain i MPact on the bridge deflection monitoring.

关 键 词：大悬臂 连续钢桁梁 横移施工 有限元 监控 

分 类 号：U442[建筑科学—桥梁与隧道工程]