Analysis On Performance Of Mega SRC Frame-Corewall Structure

With the help of SRC components,mega SRC frame-corewall structure represents outstanding stability, fire resistance,lateral stiffness and seismic behavior.By injected with the concept of mega structure,it has good architectural function and specific path of force transfer.In this dissertation,performance of mega SRC frame-corewall structure is investigated.The main research work are showed as below:1) Analysis is carried out on the performance of the structures with higher stiffness of mega beams and outriggers, with mega braces, with mega braces while eliminating the sub-columns under the mega beams,with SRC columns of higher steel ratio.In order to investigate how these methods work on the performance of structure,analysis includes modal analysis, analysis of performance under wind load,and response spectrum analysis.2) In order to appropriately simulate the mega SRC frame-corewall structure described in this dissertation,a nonlinear finite element method considering the nonlinear finite element software, analytical model and material constitutive model is proposed.And experiments are simulated by ABAQUS and SeismoStruct to verify the reliability of the selected model.3) Elastic time-history analysis and elasto-plastic time-history analysis are carried out on mega SRC frame-corewall structures utilizing ABAQUS,investigating the structure failure mechanism,and the influence on seismic behavior caused by mega braces and column steel ratio.4)Response spectrum analysis,elastic time-history analysis,elasto-plastic time-history analysis and Pushover analysis are carried out on a realistic structure. These analysis are aimed to verify the conclusion,such as the characteristic of internal force distribution, the structure failure mechanism and so on,to further investigate the seismic behavior of mega SRC frame-corewall structure,and to make suggestions on structural design.