Finite Element Analysis Of Mechanical Performance Of I-shaped Double Steel Plate-concrete Composite Shear Wall

With the increase of the height of the building structure,the building structure has got more requirements on the lateral force of the components,which makes the shear wall components play an increasingly important role in the high-rise and super high-rise buildings.A variety of different shear wall forms have emerged.In view of the shortcomings of traditional reinforced concrete shear walls in high-rise buildings,the I-shaped double steel-concrete composite shear wall members are proposed,and the double-shaped steel plate in one shape is based on the research of concrete composite shear wall members.The mechanical properties of the special-shaped double steel-concrete shear wall are deeply studied and analyzed.Through the combination of literature review,numerical simulation and theoretical analysis,the mechanical properties under monotonic and cyclic loading are studied.The specific research work is as follows:1)The ABAQUS software was used to simulate the in-situ double-steel-concrete shear wall components of the existing experimental data.The finite element results were compared with the experimental results.The results were found to be highly consistent.The correctness and rationality of the process and parameter selection laid the foundation for simulating the double-steel-concrete shear wall members.2)In this paper,73 models of 3,4,and 5 cavity I-shaped double steel plate-concrete composite shear wall models are designed,and the mechanical properties of the steel plate under monotonic load and cyclic reciprocating load are analyzed.The influence of different factors such as the thickness of the steel plate,steel plate strength,concrete strength,wall thickness,shear span ratio,axial compression ratio and cavity number.The stress cloud diagram is obtained,the hysteresis curve is drawn,and the bearing capacity,deformation capacity and hysteretic loss of different parameters are analyzed and summarized.The law of influence of ability can lay a foundation for better application in practical engineering.3)Through the comparative analysis of the mechanical properties of 73 specimens,the simulation results show that under the premise of controlling certain axial compression ratio and shear span ratio,improving the concrete strength grade can improve the bearing capacity of the specimen;improving the strength and thickness of the steel plate can improve the ductility and deformability of the test piece;the thickness of the wall and the thickness of the steel plate have the greatest influence on the stiffness degradation and energy consumption of the test piece.