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An Experimental Study on Flexural Behavior of RC Beams Strengthened with Hi-Strength Bars(3)
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 Title & Authors
An Experimental Study on Flexural Behavior of RC Beams Strengthened with Hi-Strength Bars(3)
Shin, Kyung-Jae; Kim, Yoon-Jung; Moon, Jeong-Ho;
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 Abstract
Unlike external bonded steel plate or carbon fiber, the external unbonded strengthening using hi-strength bar has some advantages in speed and simplicity of installation. It is not required surface preparations and not affected by environmental conditions. A set of nine laboratory tests on RC beams strengthened using the hi-tension bars are reported. Anchoring pin developed in former research is installed at the end of beam to connect the hish-tension bar to RC beam. The test results strengthened by hi-tension bars are compared with those of non-strengthened specimens. The main test parameters are the cross-sectional area of the high-tension bar, distance of stirrups and condition of supports. Test results show that the beams reinforced are superior to reference specimens, especially for the strength and deformation capacity. Also, shear resisting effect of hi-strength bar can be confirmed in the specimens which have lack of stirrups.
 Keywords
high-tension bar;prestress;post tension;unbonded bar;reinforcing;
 Language
Korean
 Cited by
1.
고장력 인장봉으로 보강된 RC보의 전단해석에 관한 연구,이수헌;김병준;박민석;신경재;

대한건축학회논문집:구조계, 2009. vol.25. 3, pp.35-42
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