Out-of-code high-rise structural design of Tonghao Electrification Bureau Technology Innovation Building
.The structural height of Tonghao Electrification Bureau Technology Innovation Building is 121.35m,and the reinforced concrete frame-core tube structure system is adopted.Concrete-filled steel tube outer frame column,multi-ribbed floor and double coupling beam were adopted in structural design to achieve better building space.Based on the stratigraphy condition and the characteristics of frictional pile foundation,the design idea of considering the interaction of pile and soil was adopted in the foundation design.The pile-soil sharing ratio was calculated by the method of considering the cap effect in the domestic code and the method of referring to the foreign literature,and the application was carried out according to the results.This project has a number of irregular items,which is an out-of-code high-rise structure.The static elastic analysis of the structure was carried out by YJK and ETABS softwares.The analysis results of the two softwares are in good agreement and can meet the requirements of the specification.The dynamic elastic-plastic analysis of the structure under rare earthquake was carried out by Perform 3D software.According to the analysis results,the seismic performance of the structure under rare earthquake was evaluated,and the structure can meet the expected seismic performance target under rare earthquake.The connection joint between concrete-filled steel tubular column and concrete beam is the key joint of the project.In view of the problems existing in the past practice of the connection joint,a connection joint with a large hole was designed and the finite element analysis of the joint was carried out.The results show that the joint has a certain safety reserve.Finally,the modeling simulation and calculation results of the multi-ribbed floor were described.
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