STUDY ON SHEAR BEHAVIOR OF PRE-CRACKED SHORT BEAMSSTRENGTHENED WITH BFRP SHEET

Abstract

Abstract: In order to study the shear performance of short RC beams strengthened with BFRP sheet, 6 RC pre-cracked short beams strengthened with BFRP were studied and analyzed under four-point bending test. The results indicate that the shear capacity of the strengthened beams was 31.6% greater than that of unconfined ones due to the existing of BFRP sheets. At the same time, the mid-span deflection of short beams was reduced. The shear span ratio and strengthening modes affected the shear performance of the tested beams. Strut-and-tie models were used to predict the shear capacity of tested beams and the simplified method fitted well with the test results. Short RC beams strengthened with BFRP sheet is feasible.

Key words: external bonded method, BFRP, pre-cracked short beams, shear behavior, strut-and-tie model

CLC Number:

TB332

ZHAO Lin, YANG Yu-chen, LIU Hua-xin, KONG Xiang-qing. STUDY ON SHEAR BEHAVIOR OF PRE-CRACKED SHORT BEAMSSTRENGTHENED WITH BFRP SHEET[J]. Fiber Reinforced Plastics/Composites, 2016, 0(6): 58-63.

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