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| Theoretical analysis on the composite compressive stiffness for PVC-FRP confined concrete column |
| Received:January 04, 2014 Revised:February 20, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201501018 |
| KeyWord:PVC-FRP confined concrete column composite compressive stiffness variation principle hooping mechanism coefficient volume-fiber ratio Poisson's ratio |
| Author | Institution |
| 于峰 |
安徽工业大学 建筑工程学院, 马鞍山 |
| 徐国士 |
安徽工业大学 建筑工程学院, 马鞍山 |
| 程安春 |
安徽工业大学 建筑工程学院, 马鞍山 |
| 黎德光 |
安徽工业大学 建筑工程学院, 马鞍山 |
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| Abstract: |
| To study the composite compressive stiffness of PVC-FRP confined concrete column,by means of the displacement variation principle of elasticity,the elasticity theory analysis of infinitesimal deformation was performed for PVC-FRP confined reinforced concrete column.Based on the compatibility of radial displacement and longitudinal strain,theoretic formulas of the compressive stiffness of PVC-FRP tube and core concrete,the hooping mechanism coefficient of PVC-FRP tube to core concrete were gained.The composite compressive stiffness calculation theory of PVC-FRP confined concrete column was derived on this basis.The influence law of the CFRP strips volume-fiber ratio,core concrete Poisson's ratio and concrete strength on the composite compressive stiffness were discussed.The calculated values of the proposed formula agree well with the experimental results. |