City Research Online

Abstract

Α beam-column type finite element for seismic assessment of R/C frame structures is presented. This finite element consists of two interacting, distributed flexibility subelements representing inelastic flexural and shear response. Following this formulation, the proposed model is able to capture spread of flexural yielding, as well as spread of shear cracking, in R/C members. The model accounts for shear strength degradation with inelastic curvature demand, as well as coupling between inelastic flexural and shear deformations after flexural yielding, observed in many experimental studies. An empirical relationship is proposed for evaluating average shear distortion of R/C columns at onset of stirrup yielding. The proposed numerical model is validated against experimental results involving R/C columns subjected to cyclic loading. It is shown that the model can predict well the hysteretic response of R/C columns with different failure modes, i.e. flexure-critical elements, elements failing in shear after flexural yielding, and shear-critical R/C members.

Publication Type:	Article
Additional Information:	This is the accepted version of the following article: Mergos, P. E. and Kappos, A. J. (2008), A distributed shear and flexural flexibility model with shear–flexure interaction for R/C members subjected to seismic loading. Earthquake Engng. Struct. Dyn., which has been published in final form at doi: 10.1002/eqe.812
Publisher Keywords:	finite element, distributed flexibility, shear-flexure interaction
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction
Departments:	School of Science & Technology > Engineering
SWORD Depositor:	Symplectic Administrator

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