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논문 기본 정보

자료유형
학술저널
저자정보
양근혁 (경기대학교) 주대봉 (경기대학교) 변항용 (고려 E&C)
저널정보
대한건축학회 대한건축학회 논문집 - 구조계 大韓建築學會論文集 構造系 第27卷 第4號
발행연도
2011.4
수록면
51 - 58 (8page)

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초록· 키워드

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Three full-scale retrofitted unreinforced masonry (URM) walls and an unstrengthened URM wall were tested under constant axial load and cyclic lateral loads in order to evaluate the effect of a strengthening procedure developed using unbonded prestressed wire rope units on enhancing the in-plane shear strength and ductility of unreinforced concrete brick masonry walls. The spacing of wire ropes varied between 150 ㎜ and 450 ㎜ at the constant wall aspect ratio of 0.85. The ductility of the walls tested was evaluated using the work damage indicator, suggested by Sheikh and Khoury, calculated at each loading step from the hysteretic loops. The in-plane shear strength of walls tested was also compared with predictions obtained from the simple equations proposed to identify the shear transfer capacities of masonry and wire ropes. Test results showed that the developed strengthening procedure was highly effective in enhancing the shear cracking strength, ultimate shear strength and ductility of URM walls and controlling crack propagation along head and bed mortar joints. Higher shear strength and work damage indicator were observed in the retrofitted URM walls than in unstrengthened URM wall by 2.85 and 3.48 times, respectively, for sw of 150 ㎜, by 2.41 and 3.08 times, respectively, for sw of 300 ㎜ and by 2.05 and 2.14 times, respectively, for sw of 450 ㎜, where sw is the spacing of inclined wire ropes. The shear capacities predicted from the proposed simple equations were in good agreement with test results.

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Abstract
1. 서론
2. 실험 및 재료특성
3. 실험결과 및 분석
4. 와이어로프로 보강된 URM 벽의 전단내력
5. 결론
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