Abstract
In the aftermath of the Chile 2010 and New Zealand 2011 earthquakes, the out-of-plane buckling mechanism of reinforced concrete structural walls (RCSW) was reported for the first time in real structures. However, this failure mode had been studied since 1980s through experimental observations that constituted the basis of phenomenological models created to prevent and assess buckling instability of RCSW. Based on these models, a less conservative approach is proposed that was validated through experimental and analytical studies conducted on prisms simulating special boundary regions of planar RCSW. The main parameters considered were the influence of different loading paths acting simultaneously, the longitudinal reinforcement ratio, and the thickness of the wall. The results showed that the onset of out-of-plane buckling instability of planar RCSW is mainly governed by the longitudinal steel content, the in-plane loading demands, and the wall thickness.
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Acknowledgements
The authors wish to thank the Alaska Department of Transportation and Public Facilities for providing funding for the conduct of this research. In particular, we would like to thank Mr. Elmer Marx for his involvement in the work. We would also like to thank the entire technical staff of the NC State Constructed Facilities Laboratory. Lastly, we wish to thank the NC State Department of Civil Engineering, SENESCYT–IECE from Ecuador, and the Universidad de las Fuerzas Armadas ESPE, for providing additional financial support for former Ph.D. student Ana Gabriela Haro to conduct this work.
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Haro, A.G., Kowalsky, M., Chai, Y.H. (2019). Assessment of the Boundary Region Stability of Special RC Walls. In: Hsu, T. (eds) Concrete Structures in Earthquake. Springer, Singapore. https://doi.org/10.1007/978-981-13-3278-4_14
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DOI: https://doi.org/10.1007/978-981-13-3278-4_14
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