NEHRP Clearinghouse

Title
Cumulative Damage of Structures Subjected to Response Spectrum Consistent Random Processes.
File
PB86100807.pdf
Author(s)
Jeong, G. D.
Source
National Science Foundation, Washington, DC., January 1985, 121 p.
Identifying Number(s)
EERL-85-03
Abstract
A theoretical analysis of the effect of duration on the damage of structures subjected to earthquakes is presented. Earthquake excitation is modeled as a nonstationary random process. Estimates of the first-passage probability of a simple oscillator are employed to choose modulated Gaussian random processes consistent with a prescribed response spectrum. Expressions for the mean damage of a structure are derived using an approach similar to the Miner-Palmgren rule for failure caused by cyclic loads. The expected damage expressions are then evaluated for a structure subjected to modulated Gaussian random processes of varying duration. Two types of structures are examined: a steel structure and a reinforced concrete structure.
Keywords
Earthquake damage; Dynamic response; Ground motion; Durability; Steel structures; Earthquake engineering; Earthquake resistant structures; Theses; Structural design; Random processes; Reinforced concrete; Concrete structures; Mathematical models; Cyclic loads; Dynamic structural analysis