University of Tabriz Journal of Civil and Environmental Engineering 2008-7918 46 82 2016 05 21 Evaluation of Precast Connections Effect on Reduction Factor in Precast Concrete Frames Evaluation of Precast Connections Effect on Reduction Factor in Precast Concrete Frames 71 84 4904 FA Seyed Neyram Ahooghalandary Faculty of Civil Engineering, University of Tabriz Morteza Madhkhan Faculty of Civil Engineering, Isfahan University of Technology Journal Article 2016 06 29 With increasing population and necessity of building construction in the least time, we need to use the precast structures. However, due to some problems, the precast industry has not reached to its whole potential yet. The main problem is due to their precast concrete connections. The reduction factor is an important factor in linear analysis that indicates inelastic behaviors of structure such as resistance and ductility in nonlinear stage. In spite of many studies to obtain reduction factor of monolithic structures, we have a little information about this factor in precast ones. Hence, determining this factor is necessary for this type of structures. In this research, moment resistant precast systems in 4, 6 and 8 stories with 3 and 5 bays were investigated. The effects of two types of typical beam to column connections were evaluated. Nonlinear static pushover in three forms of triangular, uniform and modal was applied. The results indicate that precast concrete moment frames have reduction factor less than equivalent in site moment frames. With increasing population and necessity of building construction in the least time, we need to use the precast structures. However, due to some problems, the precast industry has not reached to its whole potential yet. The main problem is due to their precast concrete connections. The reduction factor is an important factor in linear analysis that indicates inelastic behaviors of structure such as resistance and ductility in nonlinear stage. In spite of many studies to obtain reduction factor of monolithic structures, we have a little information about this factor in precast ones. Hence, determining this factor is necessary for this type of structures. In this research, moment resistant precast systems in 4, 6 and 8 stories with 3 and 5 bays were investigated. The effects of two types of typical beam to column connections were evaluated. Nonlinear static pushover in three forms of triangular, uniform and modal was applied. The results indicate that precast concrete moment frames have reduction factor less than equivalent in site moment frames. https://ceej.tabrizu.ac.ir/article_4904_fb08ea18bf8b54c7342552913a96c1a5.pdf