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Earthquakes and Structures
  Volume 4, Number 6, June 2013, pages 629-647

Protocol for testing of cold-formed steel wall in regions of low-moderate seismicity
Rojit Shahi, Nelson Lam, Emad Gad and John Wilson

    Loading protocols have been developed for quasi-static cyclic testing of structures and components. However, it is uncertain if protocols developed for conditions of intense ground shaking in regions of high seismicity would also be applicable to regions of low-moderate seismicity that are remote from the tectonic plate boundaries. This study presents a methodology for developing a quasi-static cyclic displacement loading protocol for experimental bracing evaluation of cold-formed steel stud shear walls. Simulations presented in the paper were based on conditions of moderate ground shaking (in Australia). The methodologies presented are generic in nature and can be applied to other regions of similar seismicity conditions (which include many parts of China, Korea, India and Malaysia). Numerous response time histories including both linear and nonlinear analyses have been generated for selected earthquake scenarios and site classes. Rain-flow cycle counting method has been used for determining the number of cycles at various ranges of normalized displacement amplitude. It is found that the number of displacement cycles of the loading protocol increases with increasing intensity of ground shaking (associated with a longer return period).
Key Words
    loading protocols; low-moderate seismicity; cold-formed steel stud shear walls; number of cycles; normalized displacement amplitude
Rojit Shahi, Nelson Lam : Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
Emad Gad, John Wilson : Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia

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