DEVELOPMENT OF COMPRESSIVE CONSTITUTIVE MODEL FOR FRPCONFINED CONCRETE ELEMENTS

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GHORBA E.; SOLTANI MOHAMMADI M.

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Journal: INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN) Year:2008 | Volume:19 | Issue:8-2 (SUPPLEMENT CIVIL ENGINEERING) Page(s): 1-13

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Title

DEVELOPMENT OF COMPRESSIVE CONSTITUTIVE MODEL FOR FRPCONFINED CONCRETE ELEMENTS

Author(s)

GHORBA E. | SOLTANI MOHAMMADI M. | Issue Writer Certificate

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Abstract

One of the most effective methods for seismic performance improvement of reinforced concrete (RC) elements is the external confinement by the wrapping of FRP sheets. As a result of FRP confinement, the constitutive model of concrete in compression i.e. the stiffness, compressive strength and ultimate strain of concrete can be completely changed. In this research the 3-dimensional nonlinear finite element program, COM3 (developed at the University of Tokyo) has been used for modeling of concrete samples confined with various amount of FRP. The effect of different parameters (stiffness, strength and thickness of FRP sheet) on the compression stress-strain curves of confined concrete is investigated. Through a numerical parametric study, the effect of confinement level on the Elasto-Plastic and Fracture (EPF) model (plastic strain and fracture parameter), is examined and based on which some equations for constitutive model are developed. In development of these equations, the effect of clear distance between FRP straps (incomplete confinement) is also considered. After modeling of the FRP-confined concrete specimens and verification of the analysis results with existing experimental samples, the effective parameters in the amount of FRP covers' confinement were determined through sensitivity analysis. The place of FRP rupture in mean compressive stress-strain curve is also determined by means of developing a relation for the circumferential strain of concrete specimen in terms of axial strain and confinement level.

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APA: Copy

GHORBA, E., & SOLTANI MOHAMMADI, M.. (2008). DEVELOPMENT OF COMPRESSIVE CONSTITUTIVE MODEL FOR FRPCONFINED CONCRETE ELEMENTS. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), 19(8-2 (SUPPLEMENT CIVIL ENGINEERING)), 1-13. SID. https://sid.ir/paper/65659/en

Vancouver: Copy

GHORBA E., SOLTANI MOHAMMADI M.. DEVELOPMENT OF COMPRESSIVE CONSTITUTIVE MODEL FOR FRPCONFINED CONCRETE ELEMENTS. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)[Internet]. 2008;19(8-2 (SUPPLEMENT CIVIL ENGINEERING)):1-13. Available from: https://sid.ir/paper/65659/en

IEEE: Copy

E. GHORBA, and M. SOLTANI MOHAMMADI, “DEVELOPMENT OF COMPRESSIVE CONSTITUTIVE MODEL FOR FRPCONFINED CONCRETE ELEMENTS,” INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), vol. 19, no. 8-2 (SUPPLEMENT CIVIL ENGINEERING), pp. 1–13, 2008, [Online]. Available: https://sid.ir/paper/65659/en

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