Browse

A new method for load and resistance factor design

Cited 0 time in Web of Science Cited 0 time in Scopus
Authors
Wang, Jiao; Wei, Xue-Feng; Zhao, Yan-Gang
Issue Date
2019-05-26
Citation
13th International Conference on Applications of Statistics and Probability in Civil Engineering(ICASP13), Seoul, South Korea, May 26-30, 2019
Abstract
The reliability-based load and resistance factors design (LRFD) has been widely used in the structural design codes. In almost all of the current reliability methods for the determination of the load and resistance factors, the basic random variables are assumed to have known probability distributions The third-moment method has been proposed to overcome the shortcomings (e.g. requirement of probability density functions (PDF) of random variables, inevitable iterative computation, requirement of design points) of other methods. However, in the existing third-moment method, the iterative computation is required. In this paper, the application of the existing third-moment method is inspected and a simpler method is proposed. In the computation of the target mean resistance, one-time iteration in the existing third-moment method is further simplified to no iteration, by changing the equation of the target reliability to another one. In addition, there is not any mathematical limitation in the new equation of the target reliability. From the proposed method in this paper, it can be concluded that: 1) the present method gives good improvement upon the method based on the third-moment method
2) the computation of the existing third-moment method is further simplified to no iteration
3) the limitations of applicable range in exiting third-moment methods are avoided
4) the accuracy of the proposed method is proved to be higher than the exiting third-moment methods. With several examples, the comparison of the existing third-moment method, the ASCE method and the proposed method is given .The results show that the proposed method is accurate, simple and safe.
Language
English
URI
https://hdl.handle.net/10371/153540
DOI
https://doi.org/10.22725/ICASP13.445
Files in This Item:
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Civil & Environmental Engineering (건설환경공학부)ICASP13
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse