Seismic Response Analysis Of Steel Frame-reinforced Concrete Shear Wall Structure

The steel frame-reinforced concrete shear wall structure is a hybrid structure widely used in many high-rise buildings.The structure has obvious advantages in resisting earthquakes,but the collapse and destruction under strong earthquake loads may have serious consequences.It is necessary to study the collapse mechanism of steel frame-reinforced concrete shear wall structure under earthquake.In this paper,finite element analysis software LS-DYNA was used to establish the finite element model of steel frame and steel frame-reinforced concrete shear wall structure.The collapse-resistance and collapse failure process of this type of hybrid structure under earthquake were analyzed.The main tasks involved are as follows:(1)Using the software LS-DYNA to establish a refined finite element model of a six-story steel frame-reinforced concrete shear wall structure,introducing the setting of relevant parameters and the selection and input of seismic records,and the rationality of the established finite element model Verification to ensure that the analysis is correct.(2)Dynamic analysis of steel frame-shear wall structures and steel frame structures subjected to multiple earthquakes and rare earthquakes using time-history analysis methods,with plastic deformation cloud maps and equivalent stress cloud diagrams,between layers of structural layers Displacement angles,floor displacements,etc.are used as indices to study the seismic performance of steel frames and steel frame-shear wall structures.The results show that the steel frame-shear wall structure designed in accordance with China's regulations can meet the requirements of “small earthquakes are not bad and large earthquakes do not collapse."The basic seismic fortification requirements.(3)Simulate and analyze the damage failure modes of steel frame-shear wall structures under strong earthquake loads.Based on the data processing results,summarize the damage evolution process and collapse failure mechanism of such hybrid structures,and analyze the steel frame-shear wall.Structural strong earthquake failure modes and causes.(4)Studied the influence of axial compression ratio,shear wall thickness,and floor on the collapse of the structure,analyzed the influence of the floor on the collapse of the structure,and studied the collapse of the structural system with different axial compression ratio and shear wall thickness.In the process,the influence of column axial pressure ratio and shear wall thickness on the structural failure failure process is obtained.