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dc.contributor.advisorSuárez, Luis E.
dc.contributor.authorVarela-Ortiz, Wilmer
dc.date.accessioned2019-02-11T19:00:56Z
dc.date.available2019-02-11T19:00:56Z
dc.date.issued2007
dc.identifier.urihttps://hdl.handle.net/20.500.11801/1777
dc.description.abstractAnalyses were carried out to develop live load distribution factors for the seven most common US Army military vehicles on ninety steel multi-beam bridges. The bridges were analyzed by the finite element method (FEM) to obtain distribution factors. The study included load testing of a steel bridge using a dump truck. The experimental results were used to assess the reliability of the FEM. Results showed that the FEM is effective to calculate the bridge behavior when it is subjected to moving loads. From the results, 56 regression formulas were developed, eight for each of the seven vehicles considered. The live-load distribution factors calculated with the proposed formulas compared well with FEM results. These formulas resulted in less conservative distribution factors than those prescribed by AASHTO and previous studies. The new formulas will result in more accurate, less conservative and more efficient bridge load ratings for bridges on US Army garrisons.en_US
dc.description.abstractSe realizaron análisis para obtener factores de distribución para siete de los vehículos más comunes del Ejército de los Estados Unidos en noventa puentes de vigas de acero. Estos puentes fueron analizados utilizando el método de elementos finitos (MEF). El estudio incluye una prueba de carga utilizando un camión de acarreo. Los resultados experimentales se utilizaron para verificar la confiabilidad de los modelos. Los resultados muestran que el MEF es efectivo para calcular la respuesta del puente cuando se somete a cargas móviles. De los resultados obtenidos se desarrollaron 56 fórmulas, ocho para cada vehículo. Los factores de distribución calculados con las fórmulas propuestas compararon bien con los resultados del MEF. Estas fórmulas resultaron en factores de distribución menos conservadores que los sugeridos por AASHTO y estudios previos. Las nuevas fórmulas permitirán realizar análisis de carga más exactos, menos conservadores y más eficientes para puentes de vigas en bases militares.en_US
dc.language.isoenen_US
dc.subjectBridges safetyen_US
dc.subject.lcshIron and steel bridgesen_US
dc.subject.lcshBridges--Live loadsen_US
dc.titleRecommendations of bridge distribution factors for military vehicles on steel beam bridgesen_US
dc.typeThesisen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2007 Wilmer Varela Ortizen_US
dc.contributor.committeePortela, Genock
dc.contributor.committeeVirella, Juan C.
dc.contributor.committeePando, Miguel A.
dc.contributor.representativeRivera Borrero, Mario
thesis.degree.levelM.S.en_US
thesis.degree.disciplineCivil Engineeringen_US
dc.contributor.collegeCollege of Engineeringen_US
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.description.graduationYear2007en_US


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  • Theses & Dissertations
    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a degree at UPR-Mayagüez.

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