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Modified fish-bone model: A simplified MDOF model for simulation of seismic responses of moment resisting frames
, Article Soil Dynamics and Earthquake Engineering ; Volume 55, Pages 195-210 , 2013 ; 02677261 (ISSN) ; Khosravi, H ; Sharif University of Technology
2013
Abstract
This paper presents a simplified Multi-Degree-Of-Freedom (MDOF) model through modification of fish-bone model (or generic frame). Modified Fish-Bone (MFB) model is developed through three enhancements: (i) the moment of inertia for half-beams is reduced slightly to modify the assumption of equal rotation at each story joints, (ii) a number of truss elements are inserted to the fish-bone model to simulate flexural deformation of moment frames due to axial elongation and contraction of columns, and (iii) moment-rotation relationship of representative rotational springs is supposed to be bilinear instead of trilinear in order to consider simultaneous yielding at both ends of the beam in moment...