Optimal proof load testing of large quasi-identical component systems

Authors

Kazuyoshi Nishijima and Michael H. Faber

Abstract

Proof load testing may for some types of structures under certain conditions provide an efficient means of condition control. The present paper considers a special class of structures for which condition control has proven to constitute a real problem, namely attachments such as e.g. fasteners of façade components. Such structural systems are comprised by a large number of identical components under homogeneous conditions for what concerns both resistances and loads. The problem is addressed in the context of Bayesian reliability updating utilizing proof load tests of a few individual components for the purpose of gaining knowledge about all components. The optimization of proof load test strategies in regard to the number of tested components and the applied load intensity is discussed. An example is given to illustrate the use and the advantages of the proposed approach. The proposed methodology is explained and illustrated considering façade component fasteners but may be applied to anchors of retaining walls, rivets in riveted connections, riser attachments of offshore platforms and many other similar structures.

Published by/in

International Forum on Engineering Decision Making Second IFED Forum, April 26-29, 2006, Lake Louise, Canada
http://www.ifed.ethz.ch