Citation

Bradley BA, Dhakal RP, Mander JB, Li L. Earthquake Eng. Struct. Dynam. 2008; 37(1): 1-20.

Affiliation

Department of Civil Engineering, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand (bab54@student.canterbury.ac.nz)

Copyright

(Copyright © 2008, John Wiley and Sons)

DOI

10.1002/eqe.741

PMID

unavailable

Abstract

This paper experimentally investigates the application of damage avoidance design (DAD) philosophy to moment-resisting frames with particular emphasis on detailing of rocking interfaces. An 80% scale three-dimensional rocking beam-column joint sub-assembly designed and detailed based on damage avoidance principles is constructed and tested. Incremental dynamic analysis is used for selecting ground motion records to be applied to the sub-assembly for conducting a multi-level seismic performance assessment (MSPA). Analyses are conducted to obtain displacement demands due to the selected near- and medium-field ground motions that represent different levels of seismic hazard. Thus, predicted displacement time histories are applied to the sub-assembly for conducting quasi-earthquake displacement tests. The sub-assembly performed well reaching drifts up to 4.7% with only minor spalling occurring at rocking beam interfaces and minor flexural cracks in beams. Yielding of post-tensioning threaded bars occurred, but the sub-assembly did not collapse. The externally attached energy dissipators provided large hysteretic dissipation during large drift cycles. The sub-assembly satisfied all three seismic performance requirements, thereby verifying the superior performance of the DAD philosophy.