caa a22 4500 445361336 CHVBK 20180317142916.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s11071-010-9903-3 doi (NATIONALLICENCE)springer-10.1007/s11071-010-9903-3 Analyses and evaluations for composite-moment frames with SMA PR-CFT connections [Elektronische Daten] [Jong Hu, Roberto Leon] This paper describes seismic performance and evaluation for composite-moment frames (C-MF) with a new type of bolted connections. The study is purely analytical and explores the effort needed to establish new connection parameters without large-scale physical testing. The innovative aspects of this research are in the use of partial restraint (PR) connections between steel beams and concrete-filled tube (CFT) columns that utilize a combination of low-carbon steel and shape memory alloy (SMA) components as the main force transfer elements in the connections. The intent is to utilize the recentering provided by super-elastic shape memory tension bars to reduce building damage and residual drift after a major earthquake, and the energy dissipation of low-carbon steel components in parallel. Accurate modeling and computational efficiency were achieved through the use of a simplified joint element which includes all connection strength and deformation components. Four- and six-story C-MF models were designed for a high seismic zone in the western USA. Two connection types and three column systems installed at these prototype frame models were investigated through nonlinear pushover and dynamic analyses. The C-MF models with new bolted connections were compared to those with traditional welded connections. The results of numerical analysis demonstrate that C-MF with new PR connections show superior structural performance as indicated by small residual deformation and better distribution of the demand over the height of the structure. Springer Science+Business Media B.V., 2010 Shape memory alloys nationallicence Concrete-filled tube columns nationallicence Spring elements nationallicence Joint models nationallicence Composite-moment frames nationallicence Nonlinear analyses nationallicence Hu Jong School of Civil and Environmental Engineering, Georgia Institute of Technology, 30332-0355, Atlanta, GA, USA aut Leon Roberto School of Civil and Environmental Engineering, Georgia Institute of Technology, 30332-0355, Atlanta, GA, USA aut Nonlinear Dynamics Springer Netherlands 65/4(2011-09-01), 433-455 0924-090X 65:4<433 2011 65 11071 https://doi.org/10.1007/s11071-010-9903-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11071-010-9903-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hu Jong School of Civil and Environmental Engineering, Georgia Institute of Technology, 30332-0355, Atlanta, GA, USA aut NATIONALLICENCE 700 1- Leon Roberto School of Civil and Environmental Engineering, Georgia Institute of Technology, 30332-0355, Atlanta, GA, USA aut NATIONALLICENCE 773 0- Nonlinear Dynamics Springer Netherlands 65/4(2011-09-01), 433-455 0924-090X 65:4<433 2011 65 11071 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer