Performance‐Based Plastic Design (PBPD) and Collapse Prediction of RC Dual Special Moment Frame‐Structural Wall System

ABSTRACT This paper presents the application of the performance‐based plastic design (PBPD) method for designing a reinforced concrete (RC) dual special moment frame (SMF)‐structural wall system. An RC dual SMF‐structural wall system found in two 10‐story archetype buildings (buildings A and B) is examined and modeled. The buildings are assumed to be an office building built in Jakarta, Indonesia. The baseline buildings are designed based on the current codes prior to being redesigned using the PBPD method. The baseline and PBPD structures are subjected to extensive applications of nonlinear static (pushover) and dynamic (incremental dynamic involving 14 pairs of ground motion records) analyses. The plastic hinge distribution of PBPD structures based on both nonlinear static (pushover) and incremental dynamic analyses closely matches the plastic hinge distribution on the preselected yield mechanism assumed during preliminary design. In addition, the distribution of energy dissipation between frame‐wall is only slightly different from that determined in the preliminary design. The probability of collapse is evaluated using the methodology outlined in FEMA P‐695, where it is expressed as the adjusted collapse margin ratio (ACMR). The well‐designed building shall have ACMR higher than or equal to ACMR 10% , which reflects that the maximum probability of collapse of a structure is not more than 10% when it is subjected to maximum considered earthquake (MCE) ground motions. The ACMR 10% is 1.96, while the ACMRs for PBPD buildings A and B, respectively, are 2.48 and 2.31. On the other hand, the ACMRs for baseline buildings A and B are 1.60 and 1.29, respectively. Therefore, the PBPD method is appropriate for designing a 10‐story RC dual SMF‐structural wall system.