Comparisons of different retrofit techniques with pseudo dynamic testing


9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium, Toronto, Canada, 25 - 29 July 2010, vol.2, pp.1371-1380 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2
  • City: Toronto
  • Country: Canada
  • Page Numbers: pp.1371-1380
  • TED University Affiliated: No


Seismic performance of two different retrofit methods was investigated by conducting pseudo dynamic testing of two story three bay specimens. The test frames have infill walls in the central bay and represents the seismic deficiencies including use of plain reinforcing bars, low strength concrete and insufficient confining steel. Two non-invasive and occupant friendly retrofit schemes, namely use of FRPs and precast concrete panels integrated on the infill walls were employed. Specimens were subjected to three different scale levels (0.5, 1.0, and 1.4) of Duzce ground motion. Control specimen experienced severe damage at 100% scale level and reached collapse stage due to the loss of integrity of the infill wall accompanied by heavy damage on the boundary columns of the infill wall. Experimental results confirm the lateral strength gain with 'some' ductility enhancement upon retrofitting. In this way, the test structure was able to survive the 1.4 scaled Duzce ground motion without heavy damage. Test results demonstrate the success of the two previously developed retrofit methods for simulated earthquake loads as long as sufficient drift control is ensured.