Modal verification of a destructive test of a damaged prestressed concrete beam

Autor:	T. M. Baseheart, K. Parekh, K. Allbright, Richard A. Miller
Rok vydání:	1994
Předmět:	Engineering business.industry Mechanical Engineering Aerospace Engineering Structural engineering Spall law.invention Prestressed concrete Modal Flexural strength Mechanics of Materials law Destructive testing Solid mechanics Flexibility method business Beam (structure)
Zdroj:	Experimental Mechanics. 34:389-396
ISSN:	1741-2765 0014-4851
DOI:	10.1007/bf02325154
Popis:	A deteriorated prestressed concrete beam was removed from a bridge and scheduled for static testing. Tendons in a lower corner of the beam had corroded and caused the corner concrete to spall. Two of the tendons were badly corroded and one was completely broken. Before static testing, a polyreference modal test was conducted. This test clearly identified the damaged area of the beam. Additionally, a flexibility matrix obtained from the modal test was used to predict beam behavior. It was found that the predictions from the modaltest flexibility matrix matched the results of the static flexural test. The modal test results were further used to create a tuned linear-elastic finite-element model which showed excellent correlation with both the modal and static tests in the linear range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::73e6905c87ff56a85d3cb1c20834dc24 https://doi.org/10.1007/bf02325154 Zobrazit plný text záznamu Full text from SpringerLink