Nonlinear Numerical Simulation Of Reinforced Concrete Core Walls For Lateral Behavior

In recent years,due to the rapid development of high-rise buildings,the good anti-side rigidity and the spatial rigidity reinforced concrete core walls widespread is used in high-level and the extra-high building.However,the concrete core walls component takes the spatial stress component.It's complex spatial stress situation. Domestic and foreign are few for their research,and the research results are imperfect. Therefore,the research concrete core walls of the seismic failure mechanism and stress performance,regarding enhances the extra-high building the earthquake resistance performance to have the important meaning.This article used the finite element procedure ABAQUS 6.5 in the concrete plastic damage model.It has carried on the detailed nonlinear finite element numerical simulation and the analysis to the reinforced concrete shear walls and the conrecte core walls stress performance.First,it had in the tentative data foundation and simulated the reinforced concrete shear walls to reflect under the gravity,concentrate load and horizontal load of the structure performance,and carried on the contrast with the experiment.Based on the simulation,it studied the different axial compression ratio, reinforcement ratio of steel bars for wall distribution,marginal components stirrup ratio as well as span-depth ratio of coupling beam on bearing capacity ductility,failure shape for reinforced concrete shear walls.Next,it takes the Tongji University in 2001 in view of the Shanghai Jinmao building main structure reinforced concrete core walls model experiment.It takes as this article finite element analysis's foundation.It researched the concrete core walls under the gravity,concentrate load and the horizontal load function,different the axial compression ratio,reinforcement of steel bars for wall distribution,the imposed horizontal angel,span-depth ratio of coupling beams for concrete core wall and coupling beams performance.Finally,in according with this article in front of the core walls by the stress analysis of the performance influencing factors.Based on the orthogonal test's design method,selecting the representative core walls model,carries on the preliminary simulation and analysis and puts forward the proposal to the further experimental study.