Indirect estimates of flexural strain in concrete sidewalks induced by vertical movement

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DOIResolve DOI: http://doi.org/10.1139/cjce-26-3-312
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TypeArticle
Journal titleCanadian Journal of Civil Engineering
Volume26
IssueJune 3
Pages312323; # of pages: 12
SubjectSidewalks
AbstractThis paper examines different numerical methods to estimate flexural strain from surface elevationmeasurements on concrete sidewalks. Surface elevations, along a typical concrete sidewalk cross section, weremonitored on a monthly basis as part of a study to determine the cracking mechanism of concrete sidewalks. These measurements were carried out in Calgary, Edmonton, and Camrose, Alberta, between 1993 and mid-1995. Finite difference, cubic spline, polynomial fit, and Fourier series methods of analyses are described for an indirect estimation of flexural strains in sidewalks. The sensitivity of these methods to measurement error is discussed. The Fourier series method is found to be the best procedure to analyse sidewalk surface elevation data for flexural strains estimates. The numerical methods to indirectly determine strain are best suited for those circumstances where installation of strain gauges is difficult, expensive, or impossible.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number38540
8721
NPARC number20331403
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Record identifier478d934e-4d82-4ec1-bdfa-6cac4be17d39
Record created2012-07-18
Record modified2016-05-09
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