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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.29 No.6
- 발행연도
- 2018.1
- 수록면
- 689 - 701 (13page)
이용수
초록· 키워드
오류제보하기
Corrosion of steel reinforcement is a principal cause of deterioration of RC columns. Making these corrosion-damaged columns conform to new safety regulations and functions is a tremendous technological challenge. This study presented an experimental investigation on steel-concrete jacketed corrosion-damaged RC columns. The influences of steel jacket thickness and concrete strength on the enhancement performance of the strengthened specimens were investigated. The results showed that the use of steel-concrete jacketing is efficient since the stub strengthened columns behaved in a more ductile manner. Moreover, the ultimate strength of the corrosion-damaged RC columns is increased by an average of 5.3 times, and the ductility is also significantly improved by the strengthening method. The bearing capacity of the strengthening columns increases with the steel tube thickness increasing, and the strengthening concrete strength has a positive impact on both bearing capacity, whereas a negative influence on the ductility. Subsequently, a numerical model was developed to predict the behavior of the retrofitted columns. The model takes into account corrosion-damage of steel rebar and confining enhancement supplied by the steel tube. Comparative results with the experimental results indicated that the developed numerical model is an effective simulation. Based on extensive verified numerical studies, a design equation was proposed and found to predict well the ultimate eccentric strength of the strengthened columns.
목차
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참고문헌 (47)
참고문헌 신청
Almusallam, A. A. / 2001 / Effect of degree of corrosion on the propertites of reinforcing steel bars / Constr. Build. Mater 15:361~368
Bentiss, F. / 2011 / On the relationship between corrosion inhibiting effect and molecular structure of 2, 5-bis(n-pyridyl)-1, 3, 4-thiadiazole derivatives in acidic media : Ac impedance and DFT studies / Corros. Sci 53:487~495
Biondini, F. / 2012 / Damage modeling and nonlinear analysis of concrete bridges under corrosion / Sixth International Conference on Bridge Maintenance, Safety Manag (IABMAS 2012) :8~12
Cairns, J. / 2005 / Mechanical properties of corrosion-damaged reinforcement / ACI, Struct. J 102:256~264
Chai, Y. H. / 1991 / Seismic retrofit of circular bridge columns for enhanced flexural performance / ACI Struct. J 88(5):572~584
Bentiss, F. / 2011 / On the relationship between corrosion inhibiting effect and molecular structure of 2, 5-bis(n-pyridyl)-1, 3, 4-thiadiazole derivatives in acidic media : Ac impedance and DFT studies / Corros. Sci 53:487~495
Biondini, F. / 2012 / Damage modeling and nonlinear analysis of concrete bridges under corrosion / Sixth International Conference on Bridge Maintenance, Safety Manag (IABMAS 2012) :8~12
Cairns, J. / 2005 / Mechanical properties of corrosion-damaged reinforcement / ACI, Struct. J 102:256~264
Chai, Y. H. / 1991 / Seismic retrofit of circular bridge columns for enhanced flexural performance / ACI Struct. J 88(5):572~584
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