珠海机场二号航站楼主楼屋盖钢结构施工模拟分析  

Simulation Analysis of Steel Structure Construction of the Main Building Roof of Zhuhai Airport Terminal Ⅱ

作　　者：龙秀海 区彤 林松伟 张乐乐 石煦阳 戴君南 Xiuhai Long;Tong Ou;Songwei Lin;Lele Zhang;Xuyang Shi;Junnan Dai(Guangdong Architectural Design and Research Institute Co.,Ltd.,Guangzhou 510010,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;China Construction Second Construction Engineering Bureau Co.,Ltd.,Beijing 100160,China;Zhejiang Southeast Space Frame Group,Hangzhou 311209,China)

机构地区：[1]广东省建筑设计研究院有限公司,广州510010 [2]广州大学土木工程学院,广州510006 [3]中国建筑第二建设工程局有限公司,北京100160 [4]浙江东南网架股份有限公司,杭州311209

出　　处：《钢结构（中英文）》2024年第3期38-46,共9页Steel Construction（Chinese & English）

基　　金：国家自然科学基金面上项目(52178466)。

摘　　要：网架结构是一种形式多变的空间网格结构,因其具有受力性能好、质量轻、刚度大、抗震性能好、造价低、成形容易等优点,广泛用于航站楼、飞机库、体育馆、影剧院、展览厅、车站等建筑屋盖。珠海机场二号航站楼主楼屋盖采用大跨度连续超长变曲率双曲面局部抽空钢网架结构体系。介绍了该屋盖的造型特征和结构体系组成,并针对其复杂性采用分区分块累计提升工艺进行施工,提出了施工顺序,给出了提升方案。阐述了主楼屋盖钢结构的施工步骤,对每一步的施工步骤进行了模拟分析,并对支撑胎架卸载后的网架结构施加了设计荷载,得到了主楼钢结构屋盖施工全过程的位移和应力指标,评价了设计荷载作用下主楼钢结构基于施工模拟的性能。将网架全过程监测与施工仿真模拟相结合,通过实际监测数据与仿真模拟中应力、应变值的对比分析,实时调整网架提升姿态及分块大小,实现了网架提升过程中受力状态的精准控制。结果表明:主楼钢结构屋盖的施工方案可行,提升过程中结构变形与内力满足要求;钢网架考虑施工过程的影响后,跨中竖向挠度增大,应采用可靠的措施减小挠度增大所带来的不利影响;钢网架从开始施工到最后成型的过程中,局部杆件受力模式由长细比控制变成受力控制,须加大截面;大跨度网架有必要在施工模拟卸载胎架后,按设计荷载输入施工模拟分析模型进行位移和应力比复核;网架实测的应力和位移与施工仿真模拟基本一致,表明了施工模拟分析的准确性。The grid structure is a spatial grid structure with various forms.Because of its advantages of good force performance,light weight,large rigidity,good seismic performance,low cost and easy forming,it is widely used in the roof of terminals,hangars,gymnasiums,theaters,exhibition halls,stations and other buildings.The roof of the main building of Terminal 2 of Zhuhai Airport adopts a large-span continuous ultra-long variable curvature hyperboloid local evacuation steel grid structure system.The modeling characteristics and structural system composition of the roof are introduced,and the construction process is carried out by partition and blocking cumulative lifting process according to its complexity,and the construction sequence is proposed and the lifting scheme is given.The construction steps of the steel structure of the main building roof are expounded,the construction steps of each step are simulated and analyzed,and the design load is applied to the grid structure after the unloading of the supporting frame,and the displacement and stress indicators of the whole process of the steel structure roof construction of the main building are obtained,and the performance of the steel structure of the main building based on construction simulation under the design and use load is evaluated.The construction technology that combines the whole process monitoring of the grid frame with the construction simulation is adopted,and the lifting status and block size of the grid are adjusted in real time through the comparison and analysis of the stress and strain values in the actual monitoring data and the simulation,so as to realize the accurate control of the force state of the grid lifting process.The results show that the construction scheme of the steel structure roof of the main building is feasible,and the structural deformation and internal force meet the requirements during the lifting process.After considering the influence of the construction process,the vertical deflection of mid span of the steel grid increases

关 键 词：大跨度变曲率双曲面网架 施工模拟 分区分块累计提升 全过程监测 

分 类 号：TU758.11[建筑科学—建筑技术科学]