NEHRP Clearinghouse
- Title
- The Earthquake Response of Deteriorating Systems.
- File
- PB271090.pdf
- Author(s)
- Gates, N. C.
- Source
- National Science Foundation, Washington, D.C., March 1977, 143 p.
- Identifying Number(s)
- EERL-77-03
- Abstract
- A model for stiffness degrading or deteriorating systems is used to describe six different single-degree-of-freedom systems. A numerical investigation of the response of these six systems is performed using an ensemble of twelve earthquakes. The numerical results are presented as response spectra corresponding to six different ductilities. An approximate analytical method for calculating the earthquake response of deteriorating systems from a linear response spectrum is presented. The new analytical method is compared to existing methods. Comparison with the numerical results is also made. Based upon these comparisons, it is concluded that the new method represents a significant improvement over currently available methods for predicting the earthquake response of deteriorating and nondeteriorating systems.
- Keywords
- One degree of freedom; Structures; Seismic waves; Deteriorating structures; Dynamic response; Deterioration; Cyclic loads; Earthquakes; Dynamic structural analysis