SIZE EFFECT ON STRESS-STRAIN RELATION OF FRP STRENGTHENED RECTANGULAR CONCRETE COLUMNS UNDER MONOTONIC AXIAL LOADING

Abstract

Abstract: Due to research limitations, such as the loading capacity of test equipment, the failure mechanism of FRP strengthened concrete structure design is mainly based on small size destructive test, whether it is scientific and rational to be used for large-size component in modern large-scale civil engineering haven′t been verified. Based on the idea of modified size effect law and the model of circular concrete columns, new models for predicting strength of rectangular columns confined with FRP are proposed, which can reflect the effect of different columns sizes on the compressive strength. The comparison with experiment results and existing models shows that the proposed models are more accurate.

Key words: FRP, rectangular concrete columns, size effect, axial compressive behavior, stress-strain relation

CLC Number:

TB332
TU375

WANG Zuo-hu, LIU Jing-bo, DU Xiu-li. SIZE EFFECT ON STRESS-STRAIN RELATION OF FRP STRENGTHENED RECTANGULAR CONCRETE COLUMNS UNDER MONOTONIC AXIAL LOADING[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(6): 35-39.

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