NEHRP Clearinghouse

Nonlinear Seismic Analysis of Reinforced Concrete Buildings. Phase 1.
Ettouney, M. M.; Daddazio, R. P.
National Science Foundation, Washington, DC. Small Business Innovation Research Programs., September 30, 1989, 42 p.
Three new concepts are described: (1) an efficient reinforced concrete material model based on plasticity theory; (2) an analytical solution for the integration along the length of the nonlinear beam deformations; and (3) a distribution of deformation technique which allows the preservation of local nodal building rotations while performing the explicit dynamic analysis at a time step corresponding to the global floor rotations. These developments were implemented into a prototype PC-based computer program. Benchmark analyses were performed to indicate the accuracy and efficiency of the method.
; Dynamic response; Buildings; Computer programs; Earthquake resistant structures; Earthquake engineering; Structural vibration; Earthquakes; Reinforced concrete; Seismic effects; Structural members; Plastic properties; Mathematical models; Deformation; Nonlinear systems; Dynamic structural analysis