Performance of Damage Avoidance beam-column joint subassembly subjected to bi-directional earthquake excitation

An application of Damage Avoidance Design (DAD) philosophy to jointed precast prestressed moment resisting frames with particular emphasis on detailing of the rocking interfaces for minimal cost and easy site construction is investigated. An 80% scale 3-dimensional beam-column joint detailed based on DAD principles is constructed and tested quasi-statically. Initial results are used to validate computational model of the joint. The model is then used to analyse the seismic performance of a ten-storey prototype building. Incremental Dynamic Analysis is used to select the earthquake excitations to be applied to the sub-assemblage and "Quasi- Earthquake Displacement" tests are undertaken. The subassembly performed well reaching drifts of 4.7% with only minor spalling occurring at the rocking beam interfaces and minor flexural cracks in the beams.Yielding of the post-tensioning tendons also occurred, however, collapsewas prevented.The supplemental energy dissipation system provided large energy dissipation during the large drift cycles. 2007 Taylor & Francis Group, London.

Progress in Mechanics of Structures and Materials - Proceedings of the 19th Australasian Conference on the Mechanics of Structures and Materials, ACMSM19

Performance of Damage Avoidance beam-column joint subassembly subjected to bi-directional earthquake excitation Conference Paper