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Recently, University of Naples "Federico II" in collaboration with Lamieredil S.p.A. Company has concluded experimental study focused on the investigation the seismic behavior of strap-braced CFS structures. In particular, a series of shake-table tests were performed on two reduced-scale strap-braced building structures. The specimens were three-story, two bays, 1/3 reduced-scale, strap-braced building with different floor typologies: floor made of steel frame sheathed with OSB panels or floors made of trapezoidal steel sheets and lightweight concrete. Moreover, a 3D numerical model was also developed to simulate the earthquake response of the whole building. The present paper illustrates the main results of the shake-table testing and numerical modelling. [ABSTRACT FROM AUTHOR]

The paper presents shear table testing of architectural non-structural drywall systems made of cold-formed steel-framed indoor partition walls, outdoor façade walls and suspended ceilings. The tests were carried out on two different typologies of prototypes (Type 1 and Type 2) for a total number of five specimens. The influence on seismic response of basic and enhanced anti-seismic solutions, corresponding to the use of fixed or sliding connections at the walls and ceilings perimeter, was investigated. The seismic response evaluation of the systems under investigation has been performed according to ICBO-AC156 code with different levels of increasing intensity. Test results have been analyzed in terms of dynamic amplification and fragility curves. Test results highlight that enhanced solutions have a better seismic response than basic solutions and indoor partition walls have a higher seismic “fragility” than outdoor façade walls. [ABSTRACT FROM AUTHOR]