Journal of Industrial Technology (산업기술연구)
- Volume 21 Issue B
- /
- Pages.163-174
- /
- 2001
- /
- 1229-9588(pISSN)
- /
- 1598-1371(eISSN)
Dynamic Reliability Model for Stability Analysis of Armor Units on Rubble-Mound Breakwater
경사제 피복재의 안정성 해석을 위한 동력학적 신뢰성 모형
Abstract
A dynamic reliability model for analyzing the stability of armor units on rubble-mound breakwater is mathematically developed by using Hudson's formula and definition of single-failure mode. The probability density functions of resistance and loading functions are defined properly, the related parameters to those probability density functions are also estimated straightforwardly by the first-order analysis. It is found that probabilities of failure for the stability of armor units on rubble-mound breakwater are continuously increased as the service periods are elapsed, because of the occurrence of repeated loading of random magnitude by which the resistance may be deteriorated. In particular, the factor of safety is incorporated into the dynamic reliability model in order to evaluate the probability of failure as a function of factor of safety. It may thus be possible to take some informations for optimal design as well as managements and repairs of armor units on rubble-mound breakwater from the dynamic reliability analyses.
Keywords
- dynamic reliability model;
- stability of armor units;
- service period;
- factor of safety;
- probability of failure
- 동력학적 신뢰성 모형;
- 피복재의 안정성;
- 내용기간;
- 안전계수;
- 파괴확률;