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Abstract

PSD tests on two full-scale models of existing non-seismic resisting RC frame structures are described. The testing programme covered several aspects, namely assessment of seismic performance of existing frames without and with infill panels, retrofitting of the bare frame using Selective Retrofitting techniques, strengthening of the infill panels using shotcrete and retrofitting of the frame using K-bracing with shear-link dissipators. The main results from the tests are summarised and discussed and the conclusions are drawn. The tests on the bare frame have shown how vulnerable existing structures are that were constructed in the 60's and the beneficial effects of infill panels were confirmed from the tests on the infilled frame. Important improvements, in terms of seismic performance, were achieved by the retrofitting of the frames. However, it was also confirmed that strengthening of the existing infill panels in poorly detailed frames may lead to dangerous "local" failures, such as the shear out of the external columns.

Additional information

Authors: PINTO A, European Commission, Joint Research Centre, Institute for Systems, Informatics and Safety, European Laboratory for Structural Assessment (ELSA), Ispra (IT);MOLINA J, European Commission, Joint Research Centre, Institute for Systems, Informatics and Safety, European Laboratory for Structural Assessment (ELSA), Ispra (IT);VARUM H, University of Aveiro (PT)
Bibliographic Reference: An oral report given at: 12th European Conference on Earthquake Engineering Organised by: European Association for Earthquake Engineering Held at: London (GB), 9-13 September 2002
Availability: The conference proceedings will be published by Elsevier Science.
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