Seismic Response Analysis Of SRC Frame-RC Core Tube Structure With Outriggers

In recent years,the SRC frame-RC core tube structure with outriggers has been widely used in high-rise building.This architecture is composed of SRC outer frame,RC core tubes of two different materials,different architecture composition,Due to the reinforcing layer overhanging a greater impact on the performance of the force structure,the dynamic response under seismic action of the SRC frame-RC core tube structure with outriggers is very complex.Currently architecture of such research in earthquake response is still not comprehensive and in-depth,has the problem of theory lagging behind the engineering practice.It has important theoretical significance and application value for the seismic design of such structures to research the earthquake response of the SRC frame-RC core tube structure with outriggers,The main contents of this paper include:(1)This paper expound the frame-core tube structure with outriggers of the structure form and mechanical characteristics,inductive this structure commonly used computing theory,summarizes this structure in engineering application and research status in hybrid structure.(2)Based on the research related to the structure with outriggers at home and abroad,designed and establish a basic model of SRC frame-RC core tube structure with outriggers.By changing parameters such as the model of connection type,the number of outriggers,the high of outer frame beam,the type of outer frame beam and other parameters,analysis of the structural changes in the dynamic characteristics,seismic response area.In addition,select three seismic waves on the elastic time history response analysis of the structure with different connection type and differentnumber of outriggers,Comparative analysis of its internal force,displacement,acceleration and other dynamic response under seismic action.(3)Combined with specific practical project case,made various outriggers program comparison analysis,And determines the final project plan.Select threeⅡsite seismic waves,the elastic time history response analysis to SRC frame-RC core tube structure with outriggers,compare the differences of results between dynamic analysis and spectrum analysis.Establish the elastic-plastic model by MIDAS,the elastic-plastic dynamic analysis with this model,and compare the results of the rarely met earthquake elastic time history analysis,Through the structural dynamic response under seismic action to evaluate the seismic performance of the engineering.Through the seismic response analysis of SRC frame-RC core tube structure with outriggers by this article,Further understanding of the seismic response of such structures,The conclusions have important reference value to seismic design and outrigger reinforcing layer disposed of such tall buildings.