Comparisons of different retrofit techniques with pseudo dynamic testing

2010-12-01
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.
th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium (25-29 July 2010)

Suggestions

Repair and strengthening of reinforced concrete columns with CFRPs
Ozcan, Okan; Binici, Barış; Canbay, Erdem; Ozcebe, Guney (SAGE Publications, 2010-8-17)
In this study, seismic retrofitting of undamaged and moderately damaged RC columns with CFRP was investigated. The experimental program was conducted on five RC columns with inadequate tie spacing, 90-degree hooks at tie ends, and plain (undeformed) reinforcing bars. Columns were tested under a constant axial load of 27% of axial capacity and under reversed lateral cyclic loading. The primary objective of this study was to investigate the influence of sustained axial load during repairing, damage, and corne...
Investigation of strenghthening techniques using pseudo-dynamic testing
Kurt, Efe Gökçe; Özcebe, Güney; Department of Civil Engineering (2010)
Pseudo-dynamic testing was employed to observe the seismic performance of three different retrofit methods on two story three bay reinforced concrete frame structures. The three test frames have hollow clay tile (HCT) infills in the central bay. All of the test frames represent the seismic deficiencies of the Turkish construction practice such as use of plain reinforcing bars, low strength concrete and insufficient confining steel. Two non-invasive and occupant friendly retrofit schemes suggested in the Tur...
Pseudo-dynamic testing of a concrete gravity dam
Aldemir, Alper; Binici, Barış; Arıcı, Yalın; Kurç, Özgür; Canbay, Erdem (2015-09-01)
Inspired from the simplified single degree of freedom modeling approach used in the preliminary design of concrete gravity dams, a pseudo-dynamic testing method was devised for the seismic testing of a concrete gravity dam section. The test specimen was a 1/75 scaled section of the 120-m-high monolith of the Melen Dam, one of the highest concrete gravity dams to be built in Turkey. The single degree of freedom idealization of the dam section was validated in the first stage of the study using numerical simu...
Performance of a moment resisting beam-column connection for precast concrete construction
Baran, Eray; BARAN, MEHMET; Kurtoglu, Metin; Torra-Bilal, Ines (2021-11-01)
Seismic performance of a specific type of moment resisting precast concrete beam-column connection was investigated through reversed cyclic load tests. Structural steel components were incorporated with precast concrete beam and column elements in the experiments to provide a ductile moment resisting connection. Additionally, nonlinear finite element analysis (FEA) of typical monolithic and precast connections was performed to investigate the performance and failure modes of these connections. Concrete Dama...
Evaluation of the Ground Motion Scaling Procedures for Concrete Gravity Dams
SOYSAL, BERAT FEYZA; Ay, Bekir Özer; Arıcı, Yalın (Elsevier BV; 2017-09-13)
The seismic safety of dam structures is often evaluated using time history analyses conducted with a limited number of ground motions. The selection and scaling of the ground motions is usually the most effective factor determining the results of the safety assessment. The inherent variability in the ground motion as well as the difficulty of conducting the analyses for a large number of ground motions renders the selection as the most important factor in the analysis results. The guidelines for the nonline...
Citation Formats
G. Ozcebe, B. Binici, Ö. Kurç, E. Kurt, and E. Canbay, “Comparisons of different retrofit techniques with pseudo dynamic testing,” Toronto, Canada, 2010, vol. 2, p. 1371, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84867165527&origin=inward.