Seismic out-of-plane behaviour of unreinforced AAC walls Online publication date: Thu, 02-Apr-2020
by Moritz Lönhoff; Hamid Sadegh-Azar
International Journal of Masonry Research and Innovation (IJMRI), Vol. 5, No. 2, 2020
Abstract: Autoclaved aerated concrete (AAC) is a building material widely used in many countries around the world. In earthquake prone areas, unreinforced masonry walls also need to be designed for earthquake scenarios. In this load case, the out-of-plane loads often have a significant impact on the load-bearing capacity. In most practical applications, simplified analytical methods are used to determine the out-of-plane capacity. The estimations of these models are often inaccurate as essential parameters like the vertical stiffness of the support and dynamic effects are neglected. To investigate the influence of these parameters, experimental tests have been performed on a shaking table. Numerical analyses have been carried out to determine the deformation response of the wall using non-linear single-degree-of-freedom systems. The results obtained from analytical models have been compared with experimentally determined maximum acceptable earthquake accelerations. Based on the results, the out-of-plane capacity is significantly higher than predicted by analytical models.
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