Structural design on super high-rise building of Xixian Free Trade Enterprise Service Center
The Xixian Free Trade Enterprise Service Center is located in a high-intensity zone,2km away from the Weihe Fault,and the near-field effect should be considered.The project adopted a mixed structure of steel tube concrete frame(steel beam)and reinforced concrete core tube.There are irregular items in project,such as torsional irregularity,sudden stiffness changes,reinforced layer and high-rise layer.In order to improve the structural stiffness,two outrigger truss reinforced layers were installed on the refuge floor of the building.The elastic comparative analysis under small earthquakes was carried out by using YJK and MIDAS Building softwares,and the elastic time history analysis under small earthquakes was carried out by using YJK.According to the set seismic performance objectives,performance-based design was carried out for the main parts and key components of the main structure.SAUSAGE software was used for dynamic elastoplastic time history analysis under rare earthquake action,and ANSYS software was used for finite element analysis of key nodes of the outrigger truss.The results show that all indicators meet the design requirements,and the structure and components have achieved the predetermined performance goals.The structural system is reasonable,safe and reliable.Part of the walls in this project are steel plate concrete shear walls,in the design,attention should be paid to the construction measures of steel plate concrete shear walls,and measures should be taken to control the deformation of steel plates during construction.
super high-rise buildingnear-field effectoutrigger trussperformance-based seismic designdynamic elastoplastic time history analysissteel plate concrete shear wall
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