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Reliability analysis of reinforced concrete bridges -

Show simple item record Mahmoud, Ali Ahmad, 2017-12-12T07:59:29Z 2017-12-12T07:59:29Z 2018-01 2016 2016
dc.identifier.other b19034568
dc.description Thesis. M.E. American University of Beirut. Department of Civil and Environmental Engineering, 2016. ET:6530
dc.description Advisor: Dr. Mounir Mabsout, Professor, Civil and Environmental Engineering ; Co-Advisor : Dr. Shadi Najjar, Associate Professor, Civil and Environmental Engineering ; Member of Committee : Dr. Salah Sadek, Professor, Civil and Environmental Engineering
dc.description Includes bibliographical references (leaves 38-39)
dc.description.abstract Empirical expressions for estimating the wheel load distribution and live-load bending moment are typically specified in highway bridge codes such as the AASHTO procedures. The objective of this study is to assess the reliability levels that are inherent in concrete slab bridges that are designed based on the simplified empirical live load equations in the AASHTO LRFD procedures. To achieve this objective, typical one and multi lane straight bridges with different span lengths were modeled using finite-element analysis (FEA) subjected to HS20 truck loading, tandem loading, and standard lane loading per AASHTO LRFD procedures. The FEA results were compared with the AASHTO LRFD moments in order to quantify the biases that might result from the simplifying assumptions adopted in AASHTO. A reliability analysis was conducted to quantify the reliability index for bridges designed using AASHTO procedures. To reach a consistent level of safety for one lane and multi lane bridges, the live load factor in the design equation proposed by AASHTO LRFD needs to be revised by increasing the live load factor depending on the number of lanes. The results will provide structural engineers with more consistent provisions to design concrete slab bridges or evaluate the load-carrying capacity of existing bridges.
dc.format.extent 1 online resource (viii, 39 leaves) : illustrations (some color)
dc.language.iso eng
dc.relation.ispartof Theses, Dissertations, and Projects
dc.subject.classification ET:006530
dc.subject.lcsh American Association of State Highway and Transportation Officials.
dc.subject.lcsh Bridges.
dc.subject.lcsh Concrete bridges.
dc.subject.lcsh Load factor design.
dc.subject.lcsh Finite element method.
dc.subject.lcsh Reliability (Engineering)
dc.subject.lcsh Probabilities.
dc.title Reliability analysis of reinforced concrete bridges -
dc.type Thesis
dc.contributor.department Faculty of Engineering and Architecture.
dc.contributor.department Department of Civil and Environmental Engineering,
dc.subject.classificationsource AUBNO
dc.contributor.institution American University of Beirut.

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