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Moment stability analysis method for determining safety factors for articulated concrete blocks

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dc.contributor.authorCox, Amanda L., author
dc.contributor.authorThornton, Christopher I., advisor
dc.contributor.authorVlachos, Evan, committee member
dc.contributor.authorAbt, Steven R., committee member
dc.contributor.authorWatson, Chester C., committee member
dc.date.accessioned2007-01-03T05:45:57Z
dc.date.available2007-01-03T05:45:57Z
dc.date.issued2010
dc.descriptionDepartment Head: Luis A. Garcia.
dc.description.abstractArticulated concrete block (ACB) revetment systems are widely used for channel lining and embankment protection. Available information pertaining to testing and analysis of ACB systems was identified. Current approaches for prediction of ACB system stability are based on a moment stability analysis and utilize shear stress to account for all hydrodynamic forces. Assumptions utilized in the moment stability analysis derivations were identified and the applicability to channelized and steep-slope conditions was investigated. The assumption of equal lift and drag forces was determined to be non-conservative and the most influential to computed safety factors. A database of twenty-four tests encompassing both channelized and overtopping conditions was compiled from available data for three ACB systems. Safety factors were computed using the current state-of-the-practice design methodology for each test. The current design methodology proved accurate at predicting the point of instability for five out of the nine total tested ACB installations. A new safety factor design methodology was developed using a moment stability analysis coupled with the computation of hydrodynamic forces using both boundary shear stress and flow velocity. Lift coefficients were calibrated for each of the three ACB systems within the database. Safety factors were computed using the new safety factor method and the calibrated lift coefficients. The new safety factor design method proved accurate at predicting stability for eight of the nine total tested ACB installations.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifier2010_Summer_Cox_Amanda.pdf
dc.identifierCox_colostate_0053A_10088.pdf
dc.identifierETDF2010100007CVEE
dc.identifier.urihttp://hdl.handle.net/10217/39324
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectrevetment
dc.subjectmoment stability analysis
dc.subjectfactor of safety
dc.subjectembankment stability
dc.subjectarticulated concrete blocks
dc.subject.lcshConcrete blocks -- Stability
dc.subject.lcshSlopes (Soil mechanics) -- Stability
dc.subject.lcshEmbankments -- Design and construction -- Testing
dc.subject.lcshRetaining walls -- Design and construction -- Testing
dc.titleMoment stability analysis method for determining safety factors for articulated concrete blocks
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineCivil and Environmental Engineering
thesis.degree.grantorColorado State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

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