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Seismic damage analysis including inelastic shear-flexure interaction

Mergos, P.E. & Kappos, A. J. (2010). Seismic damage analysis including inelastic shear-flexure interaction. Bulletin of Earthquake Engineering, 8(1), pp. 27-46. doi: 10.1007/s10518-009-9161-2


The paper focusses on seismic damage analysis of reinforced concrete (R/C) members, accounting for shear-flexure interaction in the inelastic range. A finite element of the beam-column type for the seismic analysis of R/C structures is first briefly described. The analytical model consists of two distributed flexibility sub-elements which interact throughout the analysis to simulate inelastic flexural and shear response. The finite element accounts for shear strength degradation with inelastic curvature demand, as well as coupling between inelastic flexural and shear deformations after flexural yielding. Based on this model, a seismic damage index is proposed taking into account both inelastic flexural and shear deformations, as well as their interaction. The finite element and the seismic damage index are used to analyse the response of R/C columns tested under cyclic loading and failing either in shear or in flexure. It is shown that the analytical model and damage index can predict and describe well the hysteretic response of R/C
columns with different types of failure.

Publication Type: Article
Additional Information: The final publication is available at
Publisher Keywords: reinforced concrete members, distributed flexibility models, shearflexure interaction, damage indices
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Departments: School of Science & Technology > Engineering
SWORD Depositor:
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