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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.25 No.4
- 발행연도
- 2020.1
- 수록면
- 293 - 302 (10page)
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초록· 키워드
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Connections play a significant role in strength of structures against earthquake-induced loads. According to the postseismic reports, connection failure is a cause of overall failure in reinforced concrete (RC) structures. Connection failure results in a sudden increase in inter-story drift, followed by early and progressive failure across the entire structure. This article investigated the cyclic performance and behavioral improvement of shape-memory alloy-based connections (SMA-based connections). The novelty of the present work is focused on the effect of shape memory alloy bars is damage reduction, strain recoverability, and cracking distribution of the stated material in RC moment frames under seismic loads using 3D nonlinear static analyses. The present numerical study was verified using two experimental connections. Then, the performance of connections was studied using 14 models with different reinforcement details on a scale of 3:4. The response parameters under study included moment-rotation, secant stiffness, energy dissipation, strain of bar, and moment-curvature of the connection. The connections were simulated using LS-DYNA environment. The models with longitudinal SMA-based bars, as the main bars, could eliminate residual plastic rotations and thus reduce the demand for post-earthquake structural repairs. The flag-shaped stress-strain curve of SMA-based materials resulted in a very slight residual drift in such connections.
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참고문헌 (25)
참고문헌 신청
Alaa Abdulridha / 2013 / Behavior and modeling of superelastic shape memory alloy reinforced concrete beams / Engineering Structures 49:893~904
M. Shahria Alam / 2012 / Seismic overstrength and ductility of concrete buildings reinforced with superelastic shape memory alloy rebar / Engineering Structures 34:8~20
M.S. Alam / 2008 / Analytical prediction of the seismic behaviour of superelastic shape memory alloy reinforced concrete elements / Engineering Structures 30(12):3399~3411
M. Shahria Alam / 2010 / Exploratory investigation on mechanical anchors for connecting SMA bars to steel or FRP bars / Materials and Structures 43(S1):91~107
A.H.M. Muntasir Billah / 2012 / Seismic performance of concrete columns reinforced with hybrid shape memory alloy (SMA) and fiber reinforced polymer (FRP) bars / Construction and Building Materials 28(1):730~742
M. Shahria Alam / 2012 / Seismic overstrength and ductility of concrete buildings reinforced with superelastic shape memory alloy rebar / Engineering Structures 34:8~20
M.S. Alam / 2008 / Analytical prediction of the seismic behaviour of superelastic shape memory alloy reinforced concrete elements / Engineering Structures 30(12):3399~3411
M. Shahria Alam / 2010 / Exploratory investigation on mechanical anchors for connecting SMA bars to steel or FRP bars / Materials and Structures 43(S1):91~107
A.H.M. Muntasir Billah / 2012 / Seismic performance of concrete columns reinforced with hybrid shape memory alloy (SMA) and fiber reinforced polymer (FRP) bars / Construction and Building Materials 28(1):730~742
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