Discussion on key issues of structural design of Kunming Changshui International Airport Terminal 2
Kunming Changshui International Airport Terminal T2 is faced with many complex conditions,such as high fill slope,high seismic fortification intensity,high-speed railway underpasses and so on,which bring many challenges to the structural design.Based on a brief introduction to the structural system of Terminal 2,the key issues of structural design were discussed from four aspects of site,seismic isolation,vibration control and steel roof,and the ways to solve the problems were given.The following conclusion can be drawn:the seismic parameters under complex site conditions should be determined through seismic response analysis of the site under three-dimensional modeling conditions.The stability of high fill slopes under earthquakes should be analyzed by using the quasi-static method and time history analysis method.When using unequal elevation base isolation,the limit value of displacement angle between isolation layers should be determined with the goal of controlling the deformation of bearings under rare earthquakes.Measures should be taken to alleviate the effects of concrete shrinkage and temperature effects on the deformation of isolation bearings for super-long structures.It is feasible to use a mixture of vibration isolation supports with different vertical frequencies to solve the structural vibration caused by high-speed rail operation.The branching angle of tree shaped columns has a significant impact on the stress efficiency of the columns.The single cable curtain wall structure connected to the large-span roof can reduce the effect of tension on the roof through self-balancing.
Kunming Changshui International Airportterminal buildinghigh-fill slopeseismic isolation structuredual control of vibration and earthquake resistancetree-shaped columncable-supported curtain wall
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