某大型会展中心钢结构卸载与施工监测分析  

Unloading and Construction Monitoring Analysis of Steel Structure in a Large Exhibition Center

作　　者：严再春 况中华 YAN Zaichun;KUANG Zhonghua(Shanghai Construction Group Co.,Ltd.,Shanghai 200080,China)

机构地区：[1]上海建工集团股份有限公司,上海200080

出　　处：《建筑施工》2021年第12期2513-2516,共4页Building Construction

摘　　要：某大型会展中心采用空间桁架结合张弦梁结构体系,钢桁架最大悬挑长度30 m。采用有限元软件Midas对卸载施工全过程进行数值模拟,基于数值模拟结果确定结构卸载过程中的重点监测对象。数值模拟和监测结果对比表明:有限元模型能够较好地模拟结构在卸载阶段的受力状态,实时监测能较好地指导施工,保证整个卸载过程安全。A large convention and exhibition center adopts space truss combined with a beam string structure system,and the maximum cantilever length of steel truss is 30 m.The finite element software Midas is used to simulate the whole process of unloading construction,and the key monitoring objects in the process of structural unloading are determined based on the numerical simulation results.The comparison of numerical simulation and monitoring results shows that,the finite element model can better simulate the stress state of the structure in the unloading stage,and the real-time monitoring can better guide the construction and ensure the safety of the whole unloading process.

关 键 词：钢桁架 施工模拟 体系转换 监测 

分 类 号：TU312[建筑科学—结构工程]