The Earthquake Engineering Online Archive

Inelastic deformation ratios for design and evaluation of structures: single-degree-of-freedom bilinear systems

Chopra, Anil K.; Chintanapakdee, Chatpan

UCB/EERC-2003/09, Earthquake Engineering Research Center, University of California, Berkeley, 2003, 81 pages (400/E177/2003-09)

The relationship between the peak deformations of inelastic and corresponding linear single-degree-of-freedom (SDF) systems is investigated. Presented are the median of the inelastic deformation ratio for 232 ground motions organized into thirteen ensembles of ground motions, representing large or small earthquake magnitude and distance, and NEHRP site classes B, C, and D; near-fault ground motions are also included. Two sets of results are presented, one for systems with known ductility factor and the other for systems with known yield-strength reduction factor.

Available online: http://eerc.berkeley.edu/reports/2003/eerc_2003_09.pdf