Research on the application of random layered sampling theory to evaluating durability of existing concrete bridge structures
by Ping-hua Zhu, Xia He, Wei-liang Jin
International Journal of Structural Engineering (IJSTRUCTE), Vol. 1, No. 2, 2010

Abstract: The common disadvantage existing in evaluation for durability is of higher cost with lower efficiency since structural members are evaluated one by one in terms of chosen tested indices. Based on the three-level-multi-index evaluating model for durability of existing concrete bridges structures, the application of random layered sampling theory to durability evaluation is studied in this paper. The relationship of evaluating cost, evaluating precision and evaluating sample size is discussed and the calculating formula for sample size and its optimum distribution among different layers is presented. At the same time, the credible interval for class of membership of bridges structures is given out. Further, the chart-flow for evaluating durability is summarised. The result of application to actual projects shows the layered random sampling method on the basis of optimum distribution among different layers can achieve coherence between evaluating cost and evaluating precision so well as to meet different needs from bridge-owner.

Online publication date: Fri, 05-Feb-2010

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Structural Engineering (IJSTRUCTE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com