JP Journal of Solids and Structures
Volume 2, Issue 3, Pages 203 - 216
(November 2008)
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FINITE ELEMENT DESIGN ANALYSIS OF COMPOSITE REBAR SHAPES FOR USE IN CONCRETE STRUCTURES
Fethi Kadioglu (Turkey) and Ramana M. Pidaparti (USA)
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Abstract:
Steel rebars are being replaced with composite rebars due to their better ability to resist corrosion in reinforced concrete structures for many infrastructure applications. A variety of composite rebar shapes can be obtained through the pultrusion process. In this paper, the effect of composite rebar shape in reinforced concrete beams type structures is investigated through finite element analysis. Four different composite rebar shapes are considered and their shape effect on various stiffness, interface stresses and free vibration characteristics was investigated. The results of stiffness, interface stresses, natural frequencies and mode shapes obtained from the finite element analysis are presented. The effects of various boundary conditions on free vibration characteristics for different rebar shapes are also investigated. An optimization study is conducted to find the rebar cross-sectional dimensions by minimizing the weight for a composite rebar with ribs. |
| Keywords and phrases: composite rebars, concrete structures, finite element analysis, vibration, optimization. |
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