Model of FRP-Confined Concrete Cylinders in Axial Compression
| Autor: | Gilbert A. Hegemier, Chung-Sheng Lee |
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| Rok vydání: | 2009 |
| Předmět: |
Dilatant
Materials science business.industry Mechanical Engineering Constitutive equation Stiffness Building and Construction Structural engineering Fibre-reinforced plastic Compression (physics) Cylinder (engine) law.invention Mechanics of Materials law Ceramics and Composites medicine medicine.symptom Composite material Axial symmetry Envelope (mathematics) business Civil and Structural Engineering |
| Zdroj: | Journal of Composites for Construction. 13:442-454 |
| ISSN: | 1943-5614 1090-0268 |
| DOI: | 10.1061/(asce)cc.1943-5614.0000029 |
| Popis: | This paper introduces a dilatancy-based analytical model of the response of an axially loaded concrete cylinder, confined with a fiber-reinforced polymer (FRP) composite jacket. Model construction is based on the experimentally based observation that the relation between axial secant stiffness and the lateral (dilatancy) strain is effectively unique for cylinders with the same unconfined concrete strength, although the confinement levels may differ. Model development incorporates strength degradation of the concrete with dilatancy (lateral dilation); this feature allows one to demonstrate that the performance of FRP-confined concrete is consistent with the strength envelope obtained from triaxial tests. Model validation is accomplished by comparisons with existing test database and the new results on large-scale concrete cylinders. The results of the validation reveal good agreement with key response functions and parameters. The present study illustrates basic constitutive equations to model FRP-confined... |
| Databáze: | OpenAIRE |
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