Numerical Study on Reinforced Concrete Core Walls Based on Fiber Model

Abstract

Reinforced concrete core walls have become major lateral force structure units in high-rise building. Base on fiber model, the process simulation of a seismic behavior testing on reinforced concrete core walls is presented. The Perform-3D software is adopted to perform static pushover analysis for reinforced concrete core walls, and results from the simulation match well with those from the tests. It is shown that the fiber model is valid for numerical simulation analysis of core walls. Damage development sequence of core wall specimen and yielding condition of each member are analyzed which coincide well with the experimental results. On this basis, effects of more design parameters on bearing capacity and deformation performance are systematically analyzed, and conclusions which is valuable for theoretical research and engineering design are obtained. The influence of axial compression ratio, height-width ratio, reinforcement ratio of coupling beam and span-depth ratio of coupling beam on the seismic performance of core walls are analyzed systemically.