MRFS DESIGNED ACCORDING TO THE THEORY OF PLASTIC MECHANISM CONTROL VS CODE RULES

Abstract eng:
In this paper the aim is to show a comparison between two design methodologies. In the following is reported the design of a reinforced concrete frame according code rules i.e. adopting the hierarchy criteria and the same frame designed by the Theory of Plastic Mechanism Control (TPMC). The TPMC, based on the application of the kinematic theorem of plastic collapse, is a more sophisticated design procedure because it works in full compliance with codes recommendations considering that it respects the hierarchy criteria. These last, in fact, are fundamental to avoid dangerous collapse mechanisms such as “soft-storey” mechanism but they are not sufficient to guarantee the exploitation of the maximum dissipation capacity of the frame. In addition push-over analyses have been made to investigate the actual collapse mechanism of the designed structure. All the obtained results confirm the ability of the design procedure to obtain a collapse mechanism of global type.

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