A model of fracture in reinforced concrete arches based on lumped damage mechanics

Autor(es)

Amorim, David L. N. de F. ^[1] ; Proenca, Sergio P. B. ^[1] ; Florez-Lopez, Julio ^{[2, 1]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Struct Engn, Engn Sch Sao Carlos, Sao Carlos, SP - Brazil

^[2] Univ Los Andes, Dept Struct Engn, Merida 5101 - Venezuela

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES; v. 50, n. 24, p. 4070-4079, NOV 2013.
• Citações Web of Science: 6

Resumo

A simplified model of cracking and damage in RC circular elements is proposed. The model can be used for the structural assessment of arches and rings. The constitutive equations are based on lumped damage mechanics which is an adaptation of fracture and continuum damage mechanics to the theory of frames with plastic hinges. An arch element is assumed to be the assemblage of an elastic circular component and two inelastic hinges where the main inelastic effects, plastic yielding of the longitudinal reinforcement and concrete cracking, are concentrated. Deformations in the elastic part are assumed to be small but the model may include some geometrically nonlinear effects due to large displacements or rotations of the hinges. The numerical examples presented in the paper show that the model describes correctly the global behavior of two structures including the softening phase. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 12/02370-7 - Novos desenvolvimentos e aplicações da teoria do dano concentrado
• Beneficiário: Ana Lucia Homce de Cresce El Debs
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional