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Structural Engineering and Mechanics Volume 39, Number 3, August10 2011 , pages 317-338 DOI: https://doi.org/10.12989/sem.2011.39.3.317 |
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Numerical studies on shear connectors in push-out tests under elevated temperatures |
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Aaron J. Wang
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| Abstract | ||
| Three-dimensional thermal and mechanical coupled finite element models are proposed to study the structural behaviours of shear connectors under fire. Concrete slabs, steel beams and shear connectors are modelled with eight-noded solid elements, and profiled steel deckings are modelled with eight-noded shell elements. Thermal, mechanical and geometrical nonlinearities are incorporated into the models. With the proper incorporation of thermal and mechanical contacts among steel beams, shear connectors, steel deckings and concrete slabs, both of the models are verified to be accurate after the validation against a series of push-out tests in the room temperature or under the standard fire. Various thermal and mechanical responses are also extracted and observed in details from the results of the numerical analyses, which gives a better understanding of the structural behavior of shear connectors under elevated temperatures. | ||
| Key Words | ||
| shear connector; structural fire engineering; finite element modelling; thermal analysis | ||
| Address | ||
| Aaron J. Wang: Corporate Technical Management, CapitaLand Management (China) Co. Ltd., Shanghai, P.R. China | ||