Shake Table Tests on Deficient RC Buildings Strengthened Using Post-Tensioned Metal Straps
Abstract
The European research project BANDIT investigated the effectiveness of a novel Post-Tensioned Metal Strapping (PTMS) strengthening technique at improving the seismic performance of deficient RC buildings using shake table tests. A full-scale two-story structure was designed with inadequate reinforcement detailing of columns and beam-column joints so as to simulate typical deficient buildings in Mediterranean and developing countries. Initial shaking table tests were carried out until significant damage was observed in the beam-column joints of the bare frame. Subsequently, the damaged building was repaired and strengthened using PTMS and additional tests were performed. The results of this study show that the adopted strengthening strategy improved significantly the seismic performance of the substandard RC building under strong earthquake excitations.
Keywords
Reinforce Concrete Peak Ground Acceleration Seismic Performance Shake Table Test Reinforce Concrete BuildingNotes
Acknowledgments
The research leading to these results has received funding from the European Community’s Seventh Framework Programme [FP7/2007-2013] for access to CEA (Commissariat à l’Energie Atomique et aux Energies Alternatives) under grant agreement n° 227887 [SERIES]. The first author gratefully acknowledges the financial support provided by CONACYT and partial support by DGRI-SEP. The authors gratefully acknowledge Thierry Chaudat from EMSI laboratory for his contribution at the early stages of the project. The strengthening was performed by Nuvia Travaux Spéciaux.
References
- ASCE/SEI 41–06 (2007) Seismic rehabilitation of existing buildings. American Society of Civil Engineers, RestonGoogle Scholar
- CEN Eurocode 2 (2004a) Design of concrete structures Part 1–1: general rules and rules for buildings. Comité Européen de Normalisation, BrusselsGoogle Scholar
- CEN Eurocode 8 (2004b) Design of structures for earthquake resistance Part 1: general rules, seismic actions and rules for buildings. Comité Européen de Normalisation, BrusselsGoogle Scholar
- FEMA 356 (2000) Prestandard and commentary for the seismic rehabilitation of buildings. Federal Emergency Management Agency, Washington, DCGoogle Scholar
- Frangou M (1996) Strengthening of concrete by lateral confinement. PhD thesis, Department of Civil and Structural Engineering, The University of Sheffield, SheffieldGoogle Scholar
- Frangou M, Pilakoutas K, Dritsos S (1995) Structural repair/strengthening of RC columns. Constr Build Mater 9(5):259–266CrossRefGoogle Scholar
- Garcia R, Hajirasouliha I, Pilakoutas K (2010) Seismic behaviour of deficient RC frames strengthened with CFRP composites. Eng Struct 32(10):3075–3085CrossRefGoogle Scholar
- Garcia R, Pilakoutas K, Guadagnini M, Helal Y, Jemaa Y, Hajirasouliha I, Mongabure P (2012) Seismic strengthening of deficient RC buildings using post-tensioned metal straps: an experimental investigation. In: Proceedings of the 15WCEE, Lisbon, PortugalGoogle Scholar
- Helal Y (2012) Seismic strengthening of deficient RC elements using PTMS. PhD thesis, Department of Civil and Structural Engineering, The University of Sheffield, SheffieldGoogle Scholar
- Lehman DE, Moehle JP (2000) Seismic performance of well-confined concrete bridge columns. Report No PEER-1998/01, University of California-Berkeley, 316 ppGoogle Scholar
- Moghaddam H, Samadi M, Pilakoutas K (2010a) Compressive behaviour of concrete actively confined by metal strips, part B: analysis. Mater Struct 43(10):1383–1396CrossRefGoogle Scholar
- Moghaddam H, Samadi M, Pilakoutas K, Mohebbi S (2010b) Axial compressive behaviour of concrete actively confined by metal strips; part A: experimental study. Mater Struct 43(10):1369–1381CrossRefGoogle Scholar
- Sezen H, Moehle JP (2006) Seismic tests of concrete columns with light transverse reinforcement. ACI Struct J 103(6):842–849Google Scholar
- Sezen H, Setzler EJ (2008) Reinforcement slip in reinforced concrete columns. ACI Struct J 105(3):280–289Google Scholar