Affiliation:
1. University of Patras, Patras, Greece
Abstract
<p>Many existing buildings in seismic prone areas designed according to older codes have deficient seismic capacity due to a lack of ductility and inadequate lap splices in the longitudinal bars of the columns. This article evaluates models that are proposed by Eurocode 8, the Greek Code of Structural Interventions and other researchers for strengthening with the aim of restoring the above deficiencies by applying external confinement using fibre reinforced polymers. Through an extensive analytical work, results from different models are compared in order to gain insights and draw useful conclusions. For local ductility, the deviation of results from different models increases as the confinement level increases. In all cases it is found that the Eurocode model behaves abnormally for high values of thickness of the confining material. Revised expressions proposed by other researchers appear to correct the above response.</p>
Publisher
International Association for Bridge and Structural Engineering (IABSE)
Reference6 articles.
1. Εurocode 8 Part 3. Design of Structures for Earthquake Resistance: Assessment and Retrofitting of Buildings. Brussels: EN 1998-3: European Committee for Standardization, CEN/TC250; 2005.
2. Greek Code of Structural Interventions. Athens: Greek Earthquake Planning and Protection Organisation, Greek Ministry for Environmental Planning and Public Works; 2012. Available from http://ecpfe.oasp.gr/sites/default/files/files/full.pdf
3. Pristley MJN, Seible E, Calvi EM. Seismic design and retrofit of bridges. New York: John Wiley & Sons, Inc.; 1996.
4. Elsanadedy HM and Haroun MA. Seismic design criteria for circular lap-spliced RC bridge columns with fiber reinforced polymer jackets. ACI Struct J. 2005:102(3):354-362.
5. Harajli MH, Hamad BS, Rteil AA. Effect of Confinement of bond strength between steel bars and concrete. ACI Struct J. 2004:101(5): 595-603.
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1 articles.
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