Structural design on transfer center in T4 terminal area of Urumqi International Airport
The transfer center in T4 terminal area of Urumqi International Airport has a building area of about 100,000 m2 and a building height of 36.5m.It has the characteristics of high seismic fortification intensity,large temperature difference,large wind and snow loads,super-long structural plane,underpass of rail transit,bidirectional curved surface modeling of steel roof,etc.The transfer center adopts a reinforced concrete frame structure system with few walls,the isolation layer is set at the base and the roof adopts a large-span single-layer diamond-shaped cross-grid solid-web beam system.Several key structural issues and key design difficulties of the transfer center were introduced,including the design of the main structure,the design of the foundation,the replacement design of the underpass rail and the design of the typical joints.The force transmission analysis in complex steel roof structure,progressive collapse resistance analysis and temperature effect analysis on super-long single body were carried out.The results indicate that the corresponding design measures taken based on the characteristics of the project are safe,economical,reasonable and feasible.
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