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Performance of Repaired Structural Walls with Different Shear Span Ratios
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 Title & Authors
Performance of Repaired Structural Walls with Different Shear Span Ratios
Han, Sang-Whan; Oh, Chang-Hak; Lee, Li-Hyung;
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 Abstract
The purpose of this study is to evaluate the capacities of repaired structural walls with different shear span ratios(1, 2, 3). Experimental tests were carried out. In this study three isolated large-scale wall specimens were made. The original wall specimens were tested until the drift reaches more than 3%. The region of the damaged specimen with the crack larger than 0.2 mm is replaced by new concrete. Also, severly distorted reinforcements were also replaced by new reinforcements. The crack smaller than 0.2 mm was cured by epoxy resin. Because of the space limitation of the laboratory the dimensions of all walls are the same. The shear-span ratio was controlled by the combination of axial and lateral force using the special test setting. All specimens were tested using the incremental quasi static cyclic load until failure occurs. Test results show that strength of repaired walls was almost equivalent to that of original walls. However, deformation capacities of repaired wall specimens are inferior to the original wall specimens.
 Keywords
structural walls;repair;shear-span ratio;ductility;drift;deformation capacity;
 Language
Korean
 Cited by
 References
1.
Oh, Young-Hun, Han, Sang Whan, and Li Hyung Lee, Effect of Shear Span Ratio (M/V ㆍ D) on Strength and Deformability in RC Structural Walls, submitted to the Journal of Korean Concrete Institute, KCI, 1999

2.
ACI Committee 318, Building code requirements for reinforcements concrete, ACI, 1995

3.
I.D. Lefas, MD.,Kotsovos (1990), 'Strength and Deformation Characteristics of Reinforced Concrete Walls with Load Reversals,' ACI Structural Journal,Vol.87, No.1, pp.23-31

4.
A.E., Fiorato et. al. (1983), 'Behavior of Eathquake Resistant Structural Walls Before and After Repair',ACI structural Journal, Proceeding, Vol.80,No.5, pp.403-413

5.
한국콘크리트학회, 콘크리트구조설계기준, 1999