Flexural Behavior of Brittle RC Members Rehabilitated with Concrete Jacketing
Publication: Journal of Structural Engineering
Volume 133, Issue 10
Abstract
The composite flexural action of prismatic reinforced concrete (RC) members repaired/strengthened by RC jacketing was modeled with a dual-section approach. The model considers the relative slip at the interface between the existing member and the jacket and establishes the mechanisms that are mobilized to resist this action, thereby supporting composite behavior. An iterative step-by-step incremental algorithm was developed for calculating the overall flexural response curve. Consideration of frictional interlock and dowel action associated with sliding at the interfaces as well as the spacing and penetration of flexure-shear cracks are key aspects of the algorithm. The proposed procedure was verified through comparison with published experimental data on RC jacketed members. The sensitivity of the upgraded member’s flexural response to jacket design variables was investigated parametrically. Monolithic response modification factors related to strength and deformation indices were evaluated and the sensitivity of the model was assessed.
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Acknowledgments
The first writer was co-funded by the European Research Project “ eismic rformance ssessment and ehabilitation” (SPEAR), through Imperial College of Science, Technology and Medicine (London, UK) and by the Hellenic Ministry of Education and Religion Affairs through the scholarship “HRAKLEITOS.” The contribution of the second writer was funded by the Hellenic Secretariat of Research and Technology (GSRT) through the multi-Institutional Project “ARISTION.” The contribution of the third author was funded by the US National Science Foundation through the Mid-America Earthquake Center, Award No. EEC 97-01785.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 10 • October 2007
Pages: 1373 - 1384
Copyright
© 2007 ASCE.
History
Received: Oct 27, 2005
Accepted: Mar 9, 2007
Published online: Oct 1, 2007
Published in print: Oct 2007
Notes
Note. Associate Editor: Dat Duthinh
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