Automated seismic analysis and design of reinforced concrete frames
The seismic reliability of reinforced concrete frame buildings was studied. A method to evaluate the nonlinear response of such buildings under earthquake loading has been developed, which is sufficiently accurate for most practical purposes, and a new definition of damage is introduced, which serves as a measure of a member's residual energy dissipation capacity. An automated design method is proposed, which aims for a uniform energy dissipation throughout the building frame, as measured by the individual member damage indices. Numerous damage models are critically evaluated, which have been proposed in the past. Some of these properly take into account the dissipated hysteretic energy. The new damage index proposed is modeled on the low-cycle fatigue phenomenon exhibited by reinforced concrete members subjected to strong inelastic cyclic loads. The automatic design method is based on a thorough study of the effects of important design variables, such as longitudinal reinforcement and degree of confinement. Design rules derived from this study allow an iterative improvement of a preliminary design until the distribution of damage indices has reached a user-specified degree of uniformity.
- Research Organization:
- Columbia Univ., New York, NY (USA)
- OSTI ID:
- 5207117
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Displacement-Based Seismic Design Procedure for Framed Buildings with Dissipative Braces Part II: Numerical Results
Microcomputer aided design for reinforced concrete frames subjected to seismic loads