Seismic Behavior Experiment And Nonlinear Analysis Of Reinforced Concrete Core Walls

In high-rise and super high-rise building structure, the reinforced concrete core wall is often used as a main component of anti-force measurement. It`s Seismic performance directly impact the Mechanical performance of high-rise building structure. In this paper, Around the seismic behavior of concrete core wall, Some aspect are studied when horizontal loading is applied, such as the Mechanical performance, Mechanism of earthquake damage, Calculated method of ultimate bearing capacity and Nonlinear analysis method based on Macroscopic model. In this process, three methods are used, it are experimental research, theoretical analysis and numerical simulation. The main content include following aspects:Through four model test, when cyclic loading is applied, some aspects for concrete core wall are studied such as failure modes, hysteretic behavior, energy dissipation, carrying capacity, deformation and ductility. Mainly analyzes the effect of aspect ratio, coupling beams size and load angle to seismic performance of reinforced concrete core wall. The results show that when aspect ratio`s increased, the core wall`s ultimate strength is reduced, ductility factor may not increase; when cross-height ratio is reduced, bearing capacity is increased, but deformation capacity is reduced; when load angle is decreased, the ultimate bearing capacity is increased, but no significant decline in the deformation capacity.Based on the calculation principle of the shear wall ultimate strength, Summed up the method of the core wall ultimate bearing capacity. Calculate the ultimate bearing capacity of the test model in this formula. By comparing the theoretical values agree well with the experimental value, indicating the reliability of this computational theory. Calculate and analysis the resist bending of coupling beams, indicating its important role in the resist bending ability of core wall.In this paper, the reasonable nonlinear macro model of concrete core wall will established, based on the PERFORM-3D-Nonlinear Analysis and Performance Assessment for 3D Structure software. Analysis effect on the seismic performance of the core walls, Such as axial compression ratio, reinforcement ratio of coupling beams,load angle and Boundary element reinforcement ratio.