Assessment of existing structures - Approaches and research needs

Authors
Citation
Re. Melchers, Assessment of existing structures - Approaches and research needs, J STRUC ENG, 127(4), 2001, pp. 406-411
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Civil Engineering
Journal title
JOURNAL OF STRUCTURAL ENGINEERING-ASCE
ISSN journal
0733-9445 → ACNP
Volume
127
Issue
4
Year of publication
2001
Pages
406 - 411
Database
ISI
SICI code
0733-9445(200104)127:4<406:AOES-A>2.0.ZU;2-J
Abstract
The possibility of safely extending the life of existing infrastructure is a matter that has become of increasing importance for the work of structura l engineers, particularly when seen in the widest context of structural eng ineering. This paper proposes the view that the profession must be able to provide defendable estimates of the safety of individuals and of the safety and performance of existing structural systems. It will be argued that to do so requires prediction of future structural behavior at a level of detai l and accuracy not hitherto required from the profession. Meeting this chal lenge opens up very extensive basic and applied research needs in structura l engineering. These include better understanding and modeling of load prec esses and their rational combination; better understanding of structural sy stem behavior and the influences of largely unknowable boundary and constru ction conditions; and much better understanding and modeling of processes s uch as fatigue, corrosion, deterioration of paint, and other protection sys tems. Moreover, it is argued that assessment procedures still require funda mentally acceptable and rational decision frameworks able to justify struct ural adequacy in terms increasingly being demanded by safety and environmen tal regulators.