Abstract
The paper investigates the seismic performance of an existing 3-storey structure, built in the 70's. Not complying with capacity design principles, the structure is prone to soft-storey collapse, calling for retrofit through addition of shear walls. Two alternatives are considered with respect to the foundation: (a) conventional design; and (b) rocking isolation. In the latter case, the foundation is intentionally "under-designed" to fully mobilize its capacity acting as a "fuse". A reduced-scale model of the soil-structure system is tested in the shaking table of the Laboratory of Soil Mechanics. At reduced-scale, it is practically impossible to maintain similarity in terms of stiffness, and achieve the desired bending moment capacity of structural members at the same time. Therefore, each beam-column connection is modeled with artificial plastic hinges. It is shown that the rocking-isolated structure outperforms the conventional design, when subjected to very strong seismic shaking.
Original language | English |
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Title of host publication | Physical modelling in geotechnics |
Subtitle of host publication | Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014 |
Pages | 1031-1037 |
Number of pages | 7 |
Volume | 2 |
Publication status | Published - 2014 |
Event | 8th International Conference on Physical Modelling in Geotechnics 2014 - University of Western Australia, Perth, Australia Duration: 14 Jan 2014 → 17 Jan 2014 http://www.icpmg2014.com.au/ |
Conference
Conference | 8th International Conference on Physical Modelling in Geotechnics 2014 |
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Abbreviated title | ICPMG 2014 |
Country/Territory | Australia |
City | Perth |
Period | 14/01/14 → 17/01/14 |
Internet address |