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Title |
Flexural Ductility of Lightweight Aggregate Concrete Shear Walls with Boundary Element
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Authors |
오나경(Na-Kyung Oh) ; 양근혁(Keun-Hyeok Yang) ; 문주현(Ju-Hyun Mun) |
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DOI |
https://doi.org/10.4334/JKCI.2022.34.4.345 |
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Keywords |
전단벽; 경량골재 콘크리트; 곡률연성비; 내력; 강성 shear wall; lightweight aggregate concrete; curvature ductility ratio; flexural capacity; ductility |
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Abstract |
This study examined the flexural response of sand-lightweight aggregate concrete (SLWAC) and normal-weight concrete (NWC) shear walls under the constant axial loads and cyclic lateral loads. Test results showed that the measured flexural strength of shear wall specimens was approximately 1.16 times higher than predictions determined from ACI 318-19 procedure. The cumulative work damage indicator and secant stiffness of SLWAC shear walls corresponding to 80 % of the peak load at the descending branch of the lateral load-displacement curve were 13 % and 7 %, respectively, lower than those obtained from the counterpart NWC specimens. All the shear walls with the amount of transverse reinforcement of 1.0 achieved the curvature ductility ratios required for high-ductility recommended in EC 8, where indicates the minimum amount of transverse reinforcement specified in ACI 318-19.
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