Design, Analysis and Assessment of MRFs Equipped with FREEDAM Connections and Designed by TPMC: Comparison with Traditional Connections

Maglio, Maria; Montuori, Rosario; Nastri, Elide; Piluso, Vincenzo

doi:10.1007/978-3-031-03811-2_53

Cited by 7 publications

(1 citation statement)

References 12 publications

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“…FREEDAM joints are designed considering that the actions of frequent earthquakes no determine any slippage and plastic hinges do not develop in structural members. The resistance of the connection is calibrated from the maximum stress that the beam achieves under the maximum between the Ultimate Limit State (ULS) combination and the seismic condition concerning the Fully Operational LS (OP) Limit States [2], [7].…”

Section: Design Of Freedam Jointsmentioning

confidence: 99%

Probabilistic Analysis of the MR-Frames Equipped With Freedam Dampers

Maglio,

Montuori,

Nastri

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The goal of this work is to provide a probabilistic approach to achieve a global collapse mechanism for a fixed goal reliability in moment-resisting frames equipped with "FREEDAM" dampers. First, a benchmark structure equipped with FREEDAM connections is designed through the Theory of Plastic Mechanism Control (TPMC). Then, the computation of the partial safety factors and the overstrength coefficient needed to account for the influence of random variability of column steel, friction coefficient and tightening torque in the seismic design of FREEDAM connections are reported. The probabilistic version of the Theory of Plastic Mechanism Control (P-TPMC) is applied to MR-frames equipped with FREEDAM connections to design the non-dissipative zones by considering aleatoric uncertainty on the material properties. The method proposed evaluates the probability of failure in the attainment of a collapse mechanism of global type. It constitutes the Probabilistic version of the Theory of Plastic Mechanism Control (P-TPMC). Stochastic frames have random values of the yield strength of mem-bers, so that the random variables are the plastic moments of both beam and column sections, thus randomly affecting the collapse mechanism developed under seismic horizontal forces. The selected study case has been performed by accounting for three different coefficients of variation equal to 0.05, 0.10 and 0.15. Results show that for increasing value of the overstrength factor R the probability of failure decrease.

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Section: Design Of Freedam Jointsmentioning

confidence: 99%