巨型钢框架上部悬挂下部支承结构施工新技术仿真分析  

Construction technology and simulation analysis of mega steel frame with upper suspension and lower supporting structure

作　　者：黄星海 王静峰[1] 宣明 李德章[2] 郭磊 霍永伦 HUANG Xinghai;WANG Jingfeng;XUAN Ming;LI Dezhang;GUO Lei;HUO Yonglun(School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China;Hefei Key Project Construction Administration,Hefei 230001,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]合肥市重点工程建设管理局,安徽合肥230001

出　　处：《合肥工业大学学报（自然科学版）》2022年第4期505-511,共7页Journal of Hefei University of Technology：Natural Science

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-12-0838);合肥工业大学政产学研校地合作资助项目(W2018JSKF0424)。

摘　　要：文章以中国科学院量子信息与量子科技创新研究院(简称“量子院”)1号科研楼巨型钢框架上部悬挂下部支承结构体系为工程对象,详细介绍整个工程的施工过程和工艺步骤,并应用有限元软件Midas Gen建立结构的有限元分析模型,考虑施工过程中季节更替所引起的温度应力,采用累加模型模拟方法对结构的施工及卸载全过程进行仿真模拟分析,确定结构的最佳合拢温度与变形预调值。分析结果表明:结构受温度影响,施工过程中应力变化幅值达45 MPa,施工过程应考虑温度变化的影响,选择合适的合拢温度可以有效地减小结构应力;在上部悬挂下部支承结构体系转换过程中,吊柱拉、压应力变化范围在-51~43 MPa之间,处于安全范围内;卸载过程中,每次卸载顶部桁架最大应力与楼层竖向位移变化值均较小,结构卸载安全性高,施工技术方案可行。研究成果可以为类似结构形式的施工提供参考。This paper takes the mega steel frame with upper suspension and lower supporting structure system of No.1 Scientific Research Building of CAS Center for Excellence in Quantum Information and Quantum Physics(referred to as the Quantum Center)as the engineering object,and introduces the construction process and technological steps of the whole project in detail.The finite element analysis model of the structure is established by using the finite element software Midas Gen.Considering the temperature stress caused by seasonal change in the construction process,the accumulative model simulation method is used to simulate the whole process of construction and unloading of the structure,and the optimal closing temperature and the preset values of the structure are determined.The analysis results show that during the construction process,the stress variation range considering the influence of temperature is up to 45 MPa.The influence of temperature change should be considered in the construction process,and the reasonable closing temperature can effectively reduce the stress level of the structure.During the transformation process of the upper suspension and the lower supporting structure system,the tensile and compressive stress of the hanging column varies from-51 MPa to 43 MPa,meeting the safety requirements of the structure.In the unloading process,the variations in the maximum stress of the roof truss and the vertical displacement of the floor are small during each unloading stage,so the structural unloading safety is high and the construction technology scheme is feasible.The research results in this paper can provide reference for the construction of similar structures.

关 键 词：量子院 上部悬挂下部支承结构 累加模型 仿真分析 温度作用 

分 类 号：TU973.13[建筑科学—结构工程]