变截面钢箱梁滑移卸载技术的研究与应用  

Research and Application of Sliding Unloading Technology for Variable Cross Section Steel Box Girders

作　　者：刘玉贵 李超良 张献忠 谢志龙 LIU Yugui;LI Chaoliang;ZHANG Xianzhong;XIE Zhilong(Suzhou SND Group Co.,Ltd.,Suzhou 215000,Jiangsu,China;China Construction Steel Structure Co.,Ltd.,Eastern China Branch,Jingjiang 214532,Jiangsu,China)

机构地区：[1]苏州苏高新集团有限公司,江苏苏州215000 [2]中建钢构有限公司华东大区,江苏靖江214532

出　　处：《建筑施工》2023年第10期2084-2087,共4页Building Construction

摘　　要：结合某工程现场施工实例,对变截面钢箱梁卸载过程中方案的选择、卸载胎架的布置、卸载施工流程等进行了详细的分析,同时对卸载胎架、钢垫块受力及位移进行了有限元模拟分析,最后对卸载精度控制进行了介绍。现场施工实例表明:变截面钢箱梁卸载方式选择思路清晰,分级卸载方式施工安全可靠,结构分析合理,可为类似工程提供参考依据。Based on an on-site construction example of a certain project,a detailed analysis is performed on the selection of unloading plans,layout of unloading frames,and unloading construction process for variable cross-section steel box beams.At the same time,finite element simulation analysis is performed on the force and displacement of unloading frames and steel cushion blocks.Finally,the control of unloading accuracy is introduced.Through on-site construction examples,it is shown that the selection of unloading methods for variable cross-section steel box beams has a clear idea,the construction of graded unloading methods is safe and reliable,and the structural analysis is reasonable.It can provide a reference basis for similar projects.

关 键 词：钢箱梁 滑移施工 分级卸载 有限元分析 

分 类 号：TU997[建筑科学—市政工程]