Аннотация
This paper presents the results of an experimental investigation on
the response of continuous reinforced concrete (RC) beams with shear
deficiencies, strengthened with externally bonded carbon fiber reinforced
polymer (CFRP) sheets. The experimental program consisted of nine
full-scale, two-span, continuous beams with rectangular cross section.
The tested beams were grouped into three series. Three beams, one
from each series, were not strengthened and taken as reference beams,
whereas, six beams were strengthened using different schemes. The
variables investigated in this study included the amount of steel
shear reinforcement, amount of CFRP, wrapping schemes, and 900/00
ply combination. The experimental results indicated that the contribution
of externally bonded CFRP to the shear capacity of continuous RC
beams is significant and is dependent on the tested variables. In
addition, the test results were used to validate shear design algorithms.
The proposed algorithms show good correlation with the test results
and provided conservative estimates.
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