【摘要】：采用網(wǎng)格結(jié)構(gòu)的機場航站樓工程空間面積大、跨度大、結(jié)構(gòu)造型復雜，其結(jié)構(gòu)空間節(jié)點和桿件多，焊接工作量大、安裝難度大；如何保障航站樓網(wǎng)格結(jié)構(gòu)施工質(zhì)量是個難題。目前人們對網(wǎng)格體系結(jié)構(gòu)設計、計算理論的研究較多，但對其施工質(zhì)量控制的研究較少。本文通過收集網(wǎng)格結(jié)構(gòu)施工中發(fā)生事故的案例分析資料，，整理網(wǎng)格結(jié)構(gòu)施工發(fā)生質(zhì)量問題的主要原因，結(jié)合天津濱海國際機場T2航站樓工程焊接空心球網(wǎng)格結(jié)構(gòu)屋面的施工質(zhì)量控制情況，研究網(wǎng)格結(jié)構(gòu)施工的質(zhì)量控制。 首先從網(wǎng)格結(jié)構(gòu)原材料的性能指標、進場驗收、現(xiàn)場管理的控制、構(gòu)件加工的技術(shù)準備、工藝流程及加工質(zhì)量的控制、構(gòu)件加工焊接質(zhì)量控制、涂裝質(zhì)量控制、構(gòu)件成品保護等方面研究機場航站樓網(wǎng)格結(jié)構(gòu)的構(gòu)件制作質(zhì)量控制。 其次從網(wǎng)格結(jié)構(gòu)安裝方案的選擇、安裝設備的選擇、現(xiàn)場施工測量、拼裝、提升、焊接、卸荷等方面研究機場航站樓網(wǎng)格結(jié)構(gòu)安裝質(zhì)量控制。 采用通用有限元軟件Sap2000、MidasGen對機場航站樓典型網(wǎng)格分塊吊裝、樓面拼裝承載力、吊裝機械在樓面施工的樓面安全、網(wǎng)架提升施工、卸載等網(wǎng)格結(jié)構(gòu)施工過程中不同工況的力學復核計算進行研究。 采用大型通用有限元分析軟件ANSYS對天津濱海國際機場T2航站樓工程屋面網(wǎng)格結(jié)構(gòu)焊接球節(jié)點拉壓承載力和兩個節(jié)點在實際受力狀態(tài)下受力情況進行數(shù)值分析，解決該工程節(jié)點形式多、球體直徑較大（400mm~900mm）且加載難度大、試驗周期長的問題。 文中所涉及網(wǎng)格結(jié)構(gòu)的構(gòu)件加工、安裝質(zhì)量控制及施工過程不同工況的力學研究已得到成功實踐，希望能給類似工程的施工提供借鑒。
[Abstract]:The airport terminal project with grid structure has the advantages of large space area, large span, complex structural modeling, many spatial nodes and bars, large welding workload and installation difficulty, and how to ensure the construction quality of terminal grid structure is a difficult problem. At present, there are many researches on grid architecture design and computing theory, but there is little research on construction quality control. In this paper, the main causes of quality problems in grid structure construction are sorted out by collecting the case analysis data of accidents in grid structure construction. Combined with the construction quality control of welded hollow spherical grid roof in Tianjin Binhai International Airport T2 terminal project, the quality control of grid structure construction is studied. First of all, from the grid structure raw material performance index, incoming acceptance, site management control, component processing technical preparation, process flow and processing quality control, component processing welding quality control, painting quality control, The manufacturing quality control of the grid structure of airport terminal building is studied in the aspects of component product protection and so on. Secondly, from the selection of grid structure installation scheme, installation equipment, site construction survey, assembly, lifting, welding, unloading and other aspects of the grid structure installation quality control of airport terminal building. By using the general finite element software Sap2000,MidasGen, the typical grid lifting of airport terminal building, the bearing capacity of the floor assembly, the safety of the hoisting machinery in the floor construction, and the lifting construction of the space frame are carried out. The mechanical check calculation of different working conditions in the construction process of unloaded grid structure is studied. The tensile and compressive load-carrying capacity of welded spherical joints of the roof grid structure of Tianjin Binhai International Airport T2 Terminal Project and the stress condition of two joints under the actual stress state were numerically analyzed by using the large-scale general finite element analysis software ANSYS. The problems of many joint forms, large sphere diameter (400mm~900mm), large loading difficulty and long test period are solved. The research on machining, installation quality control and mechanics of different working conditions of grid structure has been successfully carried out in this paper. It is hoped that it can be used for reference in the construction of similar projects.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU765

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相關(guān)期刊論文 前1條

1 鄭先元;;鋼結(jié)構(gòu)工程施工質(zhì)量監(jiān)督中的常見問題及應對措施[J];工程質(zhì)量;2010年09期

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