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http://dx.doi.org/10.4334/JKCI.2006.18.2.177

Nonlinear Analysis of RC Members Using Truss Model  

Eom, Tae-Sung (Dept. of Architecture, Seoul National University)
Park, Hong-Gun (Dept. of Architecture, Seoul National University)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.2, 2006 , pp. 177-188 More about this Journal
Abstract
Conventional nonlinear finite element analysis requires complicated modeling and analytical technique. Furthermore, it is difficult to interpret the analytical results presented as the stress-strain relationship. In the present study, a design-oriented analytical method using the truss model was developed. A reinforced concrete member to be analyzed was idealized by longitudinal, transverse, and diagonal line elements. Basically, each element was modeled as a composite element of concrete and re-bars. Simplified cyclic models for the concrete and re-bar elements were developed. RC beams and walls with various reinforcement details were analyzed by the proposed method. The inelastic strength, energy dissipation capacity, deformability, and failure mode predicted by the proposed method were compared with those of existing experiments. The results showed that the proposed model accurately predicted the strength and energy dissipation capacities, and to predict deformability of the members, the compression-softening model used for the concrete strut element must be improved.
Keywords
crushed sand; natural sand; combined sand; drying shrinkage; durability;
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