|
Title |
Experimental Study on Behaviors of Prestressed Concrete Beam Reinforced by Prestressed External Tendon
|
|
Authors |
박찬솔(Chan-Sol Park) ; 김기동(Kee-Dong Kim) ; 한택희(Taek-Hee Han) ; 압둘 라티프(Abdul Latif) ; 김두기(Doo-Kie Kim) |
|
DOI |
https://doi.org/10.11112/jksmi.2022.26.6.222 |
|
Keywords |
외부 강선; 휨 성능; PSC I 보; 정적 하중 재하실험; 강선 응력증가량 External tendon; Flexural ability; Prestressed Concrete I Beam; Static loading test; Tendon stress increase |
|
Abstract |
The extensive use of external prestressing system with PSC-I beam to strengthen reinforced and prestressed concrete members requires thefull understanding of the behavior of the strengthened members. The main approach of this research was to experimentally investigate the flexuralperformance of the PSC-I beam considering external tendon and an equation was developed which indicated the produced incremental stress in thetendon due to applied load. Further, this equation was verified through performing static loading tests on two experimental specimens consideringthe presence or absence of external tendon. The test results revealed that, the flexural performance enhanced due to the use of external tendon. Moreover,the magnitude of the estimated flexural strength using proposed stress increasing equation almost coincides with the experimental test results. However,it was the evident of the improvement of the flexural performance of the system by reinforcing with the external tendon and also proved that the proposedequation was valid and effective.
|