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http://dx.doi.org/10.5000/EESK.2019.23.2.131

Drift Ratio-based Fragility Functions for Diagonally Reinforced Concrete Coupling Beams  

Lee, Chang Seok (Department of Architectural Engineering, Hanyang University)
Han, Sang Whan (Department of Architectural Engineering, Hanyang University)
Koh, Hyeyoung (Department of Civil Engineering, University of Wisconsin-Madison)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.23, no.2, 2019 , pp. 131-140 More about this Journal
Abstract
Diagonally reinforced concrete coupling beams (DRCBs) have been widely adopted in reinforced concrete (RC) bearing wall systems. DRCBs are known to act as a fuse element dissipating most of seismic energies imparted to the bearing wall systems during earthquakes. Despite such importance of DRCBs, the damage estimation of such components and the corresponding consequences within the knowledge of performance based seismic design framework is not well understood. In this paper, drift-based fragility functions are developed for in-plane loaded DRCBs. Fragility functions are developed to predict the damage and to decide the repair method required for DRCBs subjected to earthquake loading. Thirty-seven experimental results are collected from seventeen published literatures for this effort. Drift-based fragility functions are developed for four damage states of DRCBs subjected to cyclic and monotonic loading associated with minor cracking, severe cracking, onset of strength loss, and significant strength loss. Damage states are defined in a consistent manner. Cumulative distribution functions are fit to the empirical data and evaluated using standard statistical methods.
Keywords
Coupling beam; Fragility function; Damage state; Diagonal reinforcements;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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