عنوان مقاله [English]
Although many researches have been conducted to investigate the behavior of concrete precast structures against seismic loadings, behavior factor of such structures, which is of significant importance in seismic design of structures, have received less attention so far. In this study, three typical concrete precast frames with precast shear walls, consist of 4, 8 and 12 stories with 3 and 5 bays have been investigated numerically to determine the behavior factors. Effects of two types of uniform and triangular loadings, vertical and horizontal connections between panels as well as pinned and fixed connections between beam and column have been investigated in this paper. To determine the behavior factor, nonlinear static (pushover) analysis approach has been used and Perform 3D software has been applied.
Results showed that parameters such as uniform and triangular lateral loadings, pinned and fixed connections of beam-column as well as horizontal and vertical connections between panels have minor effects on the behavior factor. Moreover, increasing the number of spans with shear wall decreases the behavior factor. Increasing the number of stories, increases the behavior factor. The results obtained in the present work for 4 and 8 story frames compare well with those proposed in the seismic code 2800 and NEHRP 2003