NEHRP Clearinghouse
- Title
- Nonlinear Dynamic Response of Reinforced Concrete Frames.
- File
- PB80102858.pdf
- Author(s)
- Mark, K. M. S.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., August 1976, 268 p.
- Identifying Number(s)
- R76-38
- Abstract
- The purpose of this study is to investigate the applicability of a fiber model to the determination of the nonlinear dynamic response of frames. In this model, the stress and strain are monitored through time at each fiber of several cross sections along each member. The tangent moduli for the steel and concrete resulting from the assumed nonlinear stress-strain relationships are then used to assemble a tangent stiffness matrix for the structure at each step. The dynamic analysis is carried using a central difference formula to advance the solution in time. Several models for the concrete and the steel are first reviewed and compared. The effect of these models on the moment curvature relationship for a cross section is investigated and results are compared to experimental data. The process is repeated for simple members under static cyclic loading. Finally, the fiber model is used to study the dynamic response of a single-bay one-story frame under sinusoidal and earthquake excitation. Results are again compared to experimental data and to those of simpler models.
- Keywords
- Nonlinear analysis; Stress strain diagrams; Earthquake resistant structures; Framed structures; Reinforced concrete; Static loads; Dynamic response; Buildings; Earthquake engineering; Theses; Earthquakes; Dynamic structural analysis