| Title |
Nonlinear Analysis of Lightly Reinforced Concrete Frame Strengthed with CIP Infill Wall |
| Authors |
Park Woo-Cheol ; Park Wan-Shin ; Han Byung-Chan ; Yun Hyun-Do ; Chung Soo-Young |
| Keywords |
CIP-Infill Wall ; Seismic Strengthening ; Lightly Reinforced Frame ; IDARC-2D ; Hysteretic Model |
| Abstract |
Hysteresis failure models for inelastic behavior of macro-models of infilled lightly reinforced concrete frames have been developed. This models are empirical expressions relating three hysteresis parameters which are the simulating deteriorating behavior of strength (β), stiffness (α), and bond slip (γ) to materials and geometric properties of LRC frames. The incorporation of the hysteresis failure models into computer program IDARC-2D is described. Estimate the values for three parameters α, β, and γ which best fit the benchmark hysteresis loops. The system identification procedure performs a trial and error search for a set of initial values of α, β, and γ such that the cumulative error between the predicted and experimentally observed hysteretic energy is minimized. Multi-variable regressions were performed to relate α, β, γ as functions of the specimen's material and geometric properties and reinforcement parameters. The empirical expressions resulting from these regression analyses are the hysteresis failure models. This models were validated against benchmark results and used in a parametric study to evaluate the influence of certain variables to the behavior of reinforced concrete frame with infill CIP wall |