NEHRP Clearinghouse

IDARC Version 3.0: A Program for the Inelastic Damage Analysis of Reinforced Concrete Structures.
Kunnath, S. K.; Reinhorn, A. M.; Lobo, R. F.
National Science Foundation, Washington, DC.; New York State Science and Technology Foundation, Albany., August 31, 1992, 132 p.
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The report summarizes significant modeling and program enhancements to the computer code, IDARC for inelastic damage analysis of reinforced concrete frame-wall structures. As described here, IDARC is extended to include members with tapered cross-sections and the ability to specify different envelope characteristics at each end of the member. In addition, it is now able to handle moment releases at either end of a member to model perfect hinge connections. Two new element types are available: a circular column element with circumferential arrangement of longitudinal reinforcement and spiral hoops; and an inelastic discrete spring element which can be used to model nonlinear flexible connections, or indirectly, the effect of bar pull-out and joint distortions.
; Earthquake engineering; Damage analysis; Reinforced concrete; Walls; Computerized simulation; Framed structures; Retrofitting