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구조적 손상을 받은 RC 보의 휨보강 효과에 관한 실험적 연구An Experimental Study on the Flexural Strengthening Effect of RC Beams with Structural Damage
- Other Titles
- An Experimental Study on the Flexural Strengthening Effect of RC Beams with Structural Damage
- Issue Date
- 2003
- Publisher
- 대한건축학회
- Keywords
- preloading; flexural strengthening effect; aramid; glass; carbon fiber sheet; steel plate; preloading; flexural strengthening effect; aramid; glass; carbon fiber sheet; steel plate; 사전가력; 휨보강 효과; 아라미드; 유리; 탄소섬유시트; 강판
- Citation
- 대한건축학회논문집 구조계, v.19, no.3, pp.51 - 60
- Journal Title
- 대한건축학회논문집 구조계
- Volume
- 19
- Number
- 3
- Start Page
- 51
- End Page
- 60
- ISSN
- 1226-9107
- Abstract
- This paper deals with the flexural strengthening effect of RC beams strengthened with aramid, carbon, glass fiber sheets and steel plate. Twenty strengthened RC beams(including control beam) were experimentally evaluated to determine improvements in flexural strength. Performance (deflections, strains and ultimate loads) of RC beams which were preloaded up to 50%, 70% and 85% of the failure load were compared with that of undamaged beams. The variables are a kind of strengthening material, damaged level, strengthening type (B type, U type).The results show that strengthening of damaged beams are structurally efficient and damaged beams strengthened with fiber sheet exhibited ultimate strength and stiffness performance similar to undamaged beams. In addition, the increase of strength ranged from 11 percent to 99 percent over the strength of control beam.
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