Seismic design method of partially-restrained steel frame with RC infill walls (Ⅱ): Numerical verification
Sun Guohua1, 2, Gu Qiang1, 2, Fang Youzhen1, Yang Wenxia2, Qi Yongsheng2
1. Jiangsu Key Laboratory of Structure Engineering, Suzhou University of Science and Technology, Suzhou 215011, China; 2. Hohai University, Nanjing 210098, China
Abstract：In the companion paper, a two-stage seismic design methodology of partially-restrained steel frame with RC infill walls (PSRCW) was proposed. A six-story three-span PSRCW was designed by the new design method, and the seismic behavior of PSRCW was evaluated based on the plastic mechanism method, pushover analysis, and nonlinear time history method. The analysis results show that the ultimate lateral bearing capacity of PSRCW estimated by the plastic mechanism method is similar to that analyzed by the pushover analysis using the simplified composite inclined compression strut model. The PSRCW structure has enough lateral load-bearing capacity, and the overstrength of PSRCW is approximately 3.34. The drifts of PSRCW under frequent and rare earthquake hazard levels can satisfy the drift limit requirements of the current Chinese seismic code. The reliability of the proposed design method is further verified.
