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Title |
Seismic Performance of Special Shear Wall with Special Boundary Element Confined by Overlapping Hoops
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Authors |
송정원(Jeong-Weon Song) ; 천영수(Young-Soo Chun) ; 송진규(Jin-Kyu Song) ; 양근혁(Keun-Hyeok Yang) |
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DOI |
https://doi.org/10.4334/JKCI.2018.30.1.047 |
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Keywords |
성능기반 내진설계 ; 특수철근콘크리트 구조벽체 ; 주기하중재하 실험 ; 내진성능 performance-based design ; special structural wall ; cyclic loading test ; seismic performance |
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Abstract |
Recently, an alternative design method for lateral confinement of the special boundary elements of special structural walls was added to KBC 2016. Specifically, an overlapping hoop consisting of a combination of U-bar and cross tie is used for lateral confinement of the longitudinal reinforcements instead of a closed hoop to improve economic feasibility and constructability, which is based on the concept of a performance-based structural design. For performance-based design, it is very important to check whether the pre-defined performance goal of the structure has been reached through a nonlinear analysis. In this study, a cyclic loading test was performed on seven shear walls to understand the correlation between factors affecting the behavior of the shear wall and nonlinear behavior characteristics and to accumulate data for a nonlinear analysis. The experimental variables are installation of special boundary elements, the magnitude of the gravity load acting on the section of the wall, and lateral confinement spacing for longitudinal reinforcing bars on the special boundary element, and the experimental results are compared and analyzed in terms of deformation capacity, strength and stiffness, and energy dissipation capacity.
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