TY - JOUR ID - 4205 TI - Near-fault ground motion effects on the responses of tall reinforced concrete walls with buckling-restrained brace outriggers JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Beiraghi, Hamid AD - Department of Civil Engineering, Mahdishahr Branch, Islamic Azad University, Mah dishahr, Iran. +98 9122093893 Y1 - 2018 PY - 2018 VL - 25 IS - 4 SP - 1987 EP - 1999 KW - Reinforced concrete KW - core-wall KW - plastic hinge KW - BRB KW - outrigger KW - NLTHA KW - near-fault DO - 10.24200/sci.2017.4205 N2 - In this paper, responses of reinforced concrete core-wall structures connected to the outside columns by buckling-restrained brace (BRB) outriggers in tall buildings were investigated. These buildings are subjected to forward directivity near fault (NF) and ordinary far-fault (FF) ground motions. According to the current codes for the DBE level, the response spectrum analysis procedure was applied to analyze and design the structures. The nonlinear fiber element approach was used to simulate the reinforced concrete core-walls. Nonlinear time history analysis was implemented using 14 NF as well as 14 FF records at MCE level. In the core-wall, the results show that the mean moment demand envelope as well as the mean shear demand envelope obtained from the NF records are approximately similar to the corresponding demand envelope from FF records. The reason has to do with extending plasticity all over the RC core-wall which is subjected to both sets of records. The overall responses of the reinforced concrete core-wall with BRB outrigger system is in acceptable range both for NF and FF earthquakes. In this study, the largest curvature ductility demand in the reinforced concrete core-wall took place at levels just above the outriggers.   UR - https://scientiairanica.sharif.edu/article_4205.html L1 - https://scientiairanica.sharif.edu/article_4205_e80a45a71a5fb39088c2898416c68381.pdf ER -