Analytical Model for Fiber-Reinforced Polymer-Jacketed Square Concrete Columns in Axial Compression

This study develops a new analytical-based model for the response of square fiber-reinforced polymer (FRP)-jacketed concrete columns in axial compression. Jacket membrane strain and the maximum jacket flexural strains at the centers of the sectional side and corner are approximately evaluated by assumed parabolic functions. The proposed model reveals the effects of sectional shape and jacket strength on the specimen performance. Using test data on six large-scale square column specimens, validation of the proposed model is conducted via the comparison with the experimental curves of axial stress-strain, axial stress-transverse strain, and axial stress-jacket hoop strain. These results indicate that the model is accurate in estimating the influences of corner radius and jacket properties on the axial stress-strain relation. A parametric study shows that the axial strength and deformation capacity of the columns with high side length to corner radius ratios may not be significantly enhanced by increasing jacket thickness.

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  • Authors:
    • Lee, Chung-Sheng
    • Hegemier, Gilbert A
    • Phillippi, Donald J
  • Publication Date: 2010-3

Language

  • English

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Filing Info

  • Accession Number: 01155749
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 30 2010 8:34AM