The Seismic Performance Analysis Of Steel Beam-reinforced Concrete Column(RCS) Composite Frame Structure

In recent years,a new type of structure type has appeared in the composite structures.This frame structure is composed of reinforced concrete columns and steel beams(RCS).The structure gives full play to the advantages of the materials and mechanical behavior,especially seismic performance is greatly improved.However,due to the RCS composite structure is a new structure,currently the research of its overall seismic performance is also less. In order to allow a wider RCS composite structure, we must have a full understanding of the seismic performance of this structural system.In this paper,a six-storey RCS composite frame is as the basis and the establishment of a three-dimensional finite element model of the structure is based on ANSYS.The main contents are as follows:(1)This paper conducts the natural vibration characteristics analysis of the structure, and the structure vibration period, frequency and mode shapes is obtained;At the same time,compared with the strength frame structure response,the seismic performance of the RCS frame structure is better than the reinforced concrete frame structure.(2)In different seismic waves,this paper conducts the elastic time history analysis of the structure when the one-way,two-way seismic waves input.In a word,the paper focuses on the different seismic wave input on the structure of the floor displacement, storey drift and the internal forces in the bottom of the column base,and we obtain the internal force and displacement response of the structure under the multi-earthquake role.(3)This paper conducts the elastic-plastic time history analysis of the structure,and the internal force,displacement of the structure under rare earthquake response analysis results were compared with the flexible schedule;Simultaneously,the paper analyzes the crack of concrete structures in different seismic waves,and obtains the weak parts of the structure to provide a theoretical basis for engineering design.This article contains78figures,34tables and76references.