Experimental Research And Design Of The Transfer Structural Member Between Steel And Concrete Of One Airport Terminal Building

Nowadays, more and more public buildings have been constructed in China, such as large-scale stadium, conference and exhibition center, airport terminal, et al. While, mostly, the typical form of these buildings is combinations of reinforced concrete substructure with steel superstructure, the connection and transfer structural members in different buildings have different characteristics. So the designing of the connection and transfer structural member are the most difficult and key problems in this type hybrid building structural designing.Based on the structural design of T3 A Terminal of Xi’an xianyang International Airport Terminal and the special experiments results of this project, the main members and joints of the unique connection and structural members-Y shape brace structure, are analyzed. The main content of this paper are as follows:(1) The experimental on the stable bearing capacity of spindle variable cross-section steel tube column are researched, and the compression stability designing of the column are analyzed.(2) The design and experimental research on strengthened intersecting tubular joints of spatial members of roof steel structure.(3) The design methods of the hemispherical support under the spindle variable cross-section steel tube column are analyzed, and the nonlinear finite element model are established for hemispherical support.The idea and methods of the main members and joints of the connection and transfer designing of this project is suggestion in this thesis. By describing and analyzing the experimental research process, the characteristics of the spindle variable cross-section steel tube column with spindle shape and the strengthened intersecting tubular joints in the Y shape brace structural member, the load-bearing capacity, deformation process and failure mechanism are discussed. Some experimental result such as the ultimate bearing capacity, load-displacement curve and the stress distribution of structural members and the joints are also given. According to above research, some suggestions on the produce process and installation methods of the spindle variable cross-section steel tube column and the strengthened intersecting tubular joints are obtained. By comparing the nonlinear finite element simulation results and the experimental results, which include the ultimate bearing capacity, load-displacement curve and the stress distribution, the feasibility and accuracy of simulation of the structural members and the joints’ load-bearing and deformation capacity are validated. Then, the designing results of the hemispherical support under the spindle variable cross-section steel tube column are also verified by nonlinear finite element analyzed. Finally, some useful design methods on the produce process and installation methods of the hemispherical support are suggestion.