Research On Novel Connection And Mechanical Behavior Of Prefabricated Shear Wall Structure

A new type of prefabricated shear wall structure was proposed.The prefabricated wall panel is embedded in the outer frame composed of beams and columns,and connected at the joints by cogging.The structure relies on the compression and shearing effect of the cogging between the components to make the wall and frame resist horizontal shearing together.The structure relies on the tension of one structural column and the compression of the other structural column and wall panel to resist bending.The main contents are as follows(1)A new type of assembled shear wall structure was proposed.The size and formations of the structure were given.(2)The general finite element software ABAQUS was used to establish a structural model to simulates the process of applying horizontal displacement load to the top of the new structure to failure under a certain axial compression ratio.The deformation characteristics and force transfer mechanisms were analyzed,and the failure modes of the structure and its causes under different conditions were analyzed and summarized.(3)Based on the existing research results,combined with Chinese codes and finite element simulation results,a calculation formula for the shear capacity of the new structure was proposed,and the formula was verified by finite element simulation.(4)The lateral stiffness of the new structure was studied,and a calculation model suitable for calculating the horizontal displacement of the structure was proposed.Through the finite element simulation,the calculated and simulated values of the horizontal displacement at the top of each layer of the structure under the three working conditions were compared.The results show that the calculated values agree well with the simulated values.(5)Parameters analysis of the new structure were made,including the thickness of the embedded steel plate in the beam,the axial compression ratio and the reinforcement ratio of the column longitudinal reinforcement.The influence of three parameters on the bearing capacity,ductility,failure mode and reinforced steel bar stress of the structure was analyzed.