Tesis sobre el tema "Bridges, Concrete Testing"
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Hedlund, Nadja. "Non-Destructive Testing Of Concrete Bridges". Thesis, Luleå tekniska universitet, Byggkonstruktion och brand, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81923.
Texto completoKgoboko, Kobamelo. "Collapse behaviour of non-ductile partially prestressed concrete bridge girders". Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09EN/09enk445.pdf.
Texto completoSlapkus, Adam. "Evaluation of Georgia's high performance concerete bridge". Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19479.
Texto completoSmolenski, Peter James. "Field instrumentation and live load testing to evaluate behaviors of three reinforced concrete bridge decks". Thesis, Montana State University, 2004. http://etd.lib.montana.edu/etd/2004/smolenski/SmolenskiP0805.pdf.
Texto completoDupuis, Kenneth J. "Nondestructive testing of concrete box girder bridges using thermal imaging". Online access for everyone, 2008. http://www.dissertations.wsu.edu/Thesis/Spring2008/K_Dupuis_040908.pdf.
Texto completoSasher, William C. "Testing, assessment and FRP strengthening of concrete T-beam bridges in Pennsylvania". Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5876.
Texto completoTitle from document title page. Document formatted into pages; contains viii, 177 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 130-136).
Ferdjani, Omar. "Behaviour of a one cell prestressed concrete box girder bridge : analytical study". Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66163.
Texto completoIgwemezie, Jude O. "Dynamic response and impact effects in precast, prestressed concrete bridge ties". Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74056.
Texto completoRubin, Ariel. "Strenghtening of reinforced concrete bridge decks with carbon fiber composites". Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/19320.
Texto completoKhaled, Amar. "Behaviour of a two-cell prestressed concrete box girder bridge : analytical study". Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64019.
Texto completoJoucdar, Karim. "Behaviour of a two-cell prestressed concrete box girder bridge : experimental study". Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63981.
Texto completoShams, Mohamed Khalil. "Time-dependent behavior of high-performance concrete". Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/20682.
Texto completoJustice, Adam L. "Testing and assessment of FRP strengthened concrete T-beam bridges in Pennsylvania". Morgantown, W. Va. : [West Virginia University Libraries], 2010. http://hdl.handle.net/10450/11255.
Texto completoTitle from document title page. Document formatted into pages; contains ix, 223 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 138-141).
Maguire, Marcus J. "Transverse and Longitudinal Bending of Segmental Concrete Box Girder Bridges". Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23670.
Texto completoTo quantify and understand longitudinal and transverse behavior, the results from three live load tests of single cell segmental concrete box girder bridges are presented. Each bridge was instrumented with longitudinal and transverse strain sensors on at least two cross sections as well as rotation and deflection sensors, when possible. Two dimensional transverse frame models and three dimensional shell models were compared to the test results for each subject bridge. The two dimensional frame analyses using the common bottom web pin and roller boundary conditions provide mean absolute percent error in excess of 250%. Conversely, the newly introduced boundary conditions using pin supports at the top and bottom of each web was shown to reduce mean absolute percent error to 82%, which is on the same order of magnitude as longitudinal beamline analysis.
The three dimensional shell models were insensitive to several changes including mesh fineness, number of spans modeled, and support conditions. Using uniform surface loading, the transverse modeling procedure was shown to provide significantly more accurate results than the common two dimensional frame models. A faster and more convenient analysis method using a program generated, structure specific, influence surface was also outlined. This method produced similar results when compared to the uniform surface loading method, while allowing additional automation for easier load application.
Ph. D.
Haines, Robert Anthony. "Shear Testing of Prestressed High Performance Concrete Bridge Girders". Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7120.
Texto completoFason, William Ernest Barnes Robert W. "Static load testing of a damaged, continuous prestressed concrete bridge". Auburn, Ala, 2009. http://hdl.handle.net/10415/1582.
Texto completoCook, Wesley J. "Destructive Testing of Composite Precast Concrete Deck Panels and Buil-up Steel Plate Girders". DigitalCommons@USU, 2010. http://digitalcommons.usu.edu/etd/946.
Texto completoThornton, Nathan Paul. "Live Load Testing of Appalachia, Va Concrete Arch Bridges for Load Rating Recommendation". Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/35195.
Texto completoTwo adjoining open spandrel reinforced concrete arch bridges in downtown Appalachia, Virginia were selected for live load testing by Virginia Department of Transportation (VDOT). Both bridges have supported an increasing amount of extreme coal truck traffic throughout their service life and are essential to the efficient transport of coal in the region. Because of their age, having been built in 1929, and the amount of visible damage and repairs, VDOT was concerned about their remaining capacity and safe operation.
The live load tests focused on global behavior characteristics such as service strain and deflection as well as local behavior of the arches surrounding significant repairs. It was found that the strain and deflection data collected during load testing displayed linear elastic behavior, indicating excess capacity beyond the test loads. Also, given the loading applied, the measured strains and deflections were small in magnitude, showing that the bridges are still acting as stiff structures and are in good condition.
Data collected during these tests was compared to results from a finite element model of the bridges to determine the coal truck size which is represented by the live load test loading configurations. The model comparisons determined the test loads produced comparable deflections to those produced by the target coal truck load. Through this approach, a recommendation was given to VDOT regarding the satisfactory condition of the aging bridges to aid in the process of load rating and maintenance scheduling for the two bridges.
Master of Science
Nilimaa, Jonny. "Upgrading concrete bridges : post-tensioning for higher loads". Licentiate thesis, Luleå tekniska universitet, Byggkonstruktion och -produktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25964.
Texto completoDet finns ett stort antal gamla konstruktioner runtom i världen och många byggdes för helt andra användningsområden än vad de numera används till. Som ett exempel kan nämnas att svenska järnvägsbroar i början av 1900-talet byggdes för att klara av att bära axellaster på maximalt 200 kN, medan några av våra nybyggda broar är konstruerade för dubbelt så stora axellaster. Även traffikmängden har mångdubblats och tåghastigheterna är nu högre än någonsin. Trågbroar i armerad betong är en typisk bro som byggdes i Sverige framförallt på 50-talet och den är fortfarande en av de vanligaste brotyperna i Sverige. Trågbroarna konstruerades normalt för att bära lägre laster än vad vi har idag och för att kunna ha kvar dessa broar när lasterna ökar kan det krävas någon form av uppgradering av bärförmågan. Det finns två sätt att förbättra bärförmågan på en gammal bro, nämligen administrativ uppgradering eller förstärkning. Administrativ uppgradering innebär att nya förbättrade beräkningsmetoder används tillsammans med verkliga materialhållfastheter, geometrier och laster för att mer noggrant räkna ut brons bärförmåga. Normalt visar det sig att bärförmågan är högre än vad de ursprungliga beräkningarna antydde. På så vis höjs kapaciteten med minimal fysisk åverkan på bron. Uppgradering genom förstärkning innebär däremot att konstruktionens bärförmåga höjs genom att förändra bron ur ett rent fysiskt perspektiv. Metoder för att öka böjkapaciteten på trågbroar i betong har utvecklats och testats tidigare, men förstärkningsmetoder för att höja tvärkraftskapaciteten saknas däremot fortfarande. Målet för denna avhandling ligger därför i att utveckla en förstärkningsmetod som kan användas för att förbättra tvärkraftskapaciteten för bottenplattan på trågbroar i betong. Det finns dock några svårigheter sammankopplade med förstärkning av befintliga järnvägsbroar, t.ex. tågtraffik under förstärkningsförfarandet och att viktiga betongytor är skyddade av ballast.Inga befintliga förstärkningsmetoder bedömdes däremot som lämpliga för det avsedda användningsområdet vid ”State-of-the-Art’’ studien. Invändig efterspänning av broplattan i tvärledd bedömdes som den bäst lämpade förstärkningsmetoden och efterföljande forskning fokuserades på att reda ut möjligheter för och förstärkningseffekter av efterspänning. Två olika laboratorieförsök genomfördes under forskningsprojektet och förstärkningsmetoden testades slutligen vid ett fältförsök på en 50 år gammal järnvägsbro i Haparanda.Själva tillvägagångssättet för förstärkningsmetoden består av fyra viktigaoch sammanhängande arbetssteg:1. Borrning av horisontella hål tvärs igenom trågbrons bottenplatta.2. Installation av själva försstärkningssystemet.3. Efterspänning av förstärkningssystemet.4. Förslutning av förstärkningssystemet.Både laboratorie och fältförsöken blev lyckade och resultaten visade att stålarmeringen inuti betongen trycktes ihop när trågbron efterspänndes. Tack vare denna kompression så kan broplattan bära högre laster innan dragarmeringen börjar flyta och bron slutligen går sönder. Med andra ord så höjdes brons böjkapacitet. Fältförsöket visade att de åtta spännstagen, efterspännda med 430 kN per stag, helt och hållet motverkade dragarmeringens påkänningar av ett tåg med axellasten 215 kN. Förstärkningsmetodens effekt på tvärkraftskapaciteten är däremot inte lika lätt att påvisa men laboratorieförsöken visade att töjningen reducerades betydligt i den uppbockade dragarmeringen, i zonen där plattan fäster i huvudbalkarna. De lägre töjningsnivåerna kan tolkas som lägre skjuvpåkänningar och efterspänningen kan därmed ha en positiv effekt på broplattans tvärkraftskapacitet. Laboratorieförsöken visade däremot att både Eurokod 2 och BBK är restriktiva när det gäller att uppskatta efterspänningens effekt på tvärkraftskapaciteten. En ny förstärkningsmetod för trågbroar i betong har därmed föreslagits i och med denna avhandling, men en del frågetecken kvarstår och i kapitel 8 ges därför förslag på fortsatta forskningsområden.
Godkänd; 2013; 20130107 (jonnil); LICENTIATSEMINARIUM Ämne: Konstruktionsteknik/Structural Enginering Examinator: Professor Björn Täljsten, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Diskutant: Professor Mohammad Al-Emrani, Chalmers tekniska högskola, Göteborg Tid: Tisdag den 5 februari 2013 kl 13.00 Plats: F1031, Luleå tekniska universitet
Carmichael, Benjamin Mark. "Fiber-reinforced polymer strengthening of War Memorial Bridge installation, load testing, and analysis /". Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/CARMICHAEL_BENJAMIN_2.pdf.
Texto completoScheff, Jerry J. "Nondestructive testing of concrete bridge decks using ground penetrating radar and the chain drag method". Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=156.
Texto completoTitle from document title page. Document formatted into pages; contains xv, 144 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 122-124).
Lopez, Ibaceta Alvaro Francisco. "Seismic Performance of Substandard Reinforced Concrete Bridge Columns under Subduction-Zone Ground Motions". PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/4977.
Texto completoColombo, Alberto Belotti. "Applications of structural health monitoring and field testing techniques to probabilistic based life-cycle evaluation of reinforced concrete bridges". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-02122016-092514/.
Texto completoEste trabalho apresenta metodologias de integração de ensaios estruturais e Structural Health Monitoring (SHM) para a avaliação de pontes de concreto armado. O SHM diz respeito a um conjunto de praticas com o objetivo de acompanhar o comportamento estrutural através de sensores com o objetivo de acompanhar o comportamento da estrutura e determinar ações de manutenção de maneira proativa. As metodologias são apresentadas através do uso de dados coletados durante ensaios de pontes ferroviárias em concreto armado e do monitoramento continuo de uma ponte rodoviária. Um modelo para o ciclo de vida de estruturas de concreto armado baseado no método das lamelas é proposto. Os parâmetros deste modelo, que são considerados de maneira probabilística, são atualizados através de um método Bayesiano. Dados de ensaios de uma ponte ferroviária são utilizados nesta analise. A descrição de um sistema de monitoramento contínuo instalado na Ponte do Rio Jaguari também é feita. Durante as etapas de desenvolvimento do sistema a ponte foi inspecionada, ensaios não destrutivos foram feitos e ensaios com um veículo teste foram conduzidos. Os resultados e analises destes também são apresentados. Os dados coletados por este sistema foram utilizados para demonstrar metodologias de caracterização dos modelos de resposta devido a cargas moveis. A utilização destes modelos na avaliação de confiabilidade ao longo do tempo de uma das seções da ponte também é apresentada.
Bosworth, Kyle Judson. "Health Monitoring of the Veterans' Glass City Skyway: Vibrating Wire Strain Gage Testing, Study of Temperature Gradients and a Baseline Truck Test". Connect to Online Resource-OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1197693985.
Texto completoTypescript. "Submitted as partial fulfillment of the requirements for the Master of Science in Civil Engineering." "A thesis entitled"--at head of title. Bibliography: leaves 86-87.
Crane, Charles Kennan. "Shear and shear friction of ultra-high performance concrete bridge girders". Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34745.
Texto completoSheats, Matthew Reed. "Rehabilitation of reinforced concrete pier caps using carbon fiber reinforced composites". Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/19490.
Texto completoEDER, ERIC WILLIAM. "BEHAVIOR OF 50 YEAR OLD PRESTRESSED CONCRETE BRIDGE WITH FIBER REINFORCED POLYMER DECK REPLACEMENT". University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060953606.
Texto completoKANTHA, SAMY MADHAN KUMAR. "FIELD TEST AND ANALYSIS OF TWO PRESTRESSED CONCRETE BRIDGES AFTER DECK REPLACEMENT WITH FRP PANELS". University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187271654.
Texto completoEl-Gharib, Georges. "Evaluation of the Empirical Deck Design for Vehicular Bridges". UNF Digital Commons, 2014. http://digitalcommons.unf.edu/etd/489.
Texto completoBazáez, Gallardo Ramiro Andrés Gabriel. "Achieving Operational Seismic Performance of RC Bridge Bents Retrofitted with Buckling-Restrained Braces". PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3476.
Texto completoCanfield, Scott Robinson. "Full Scale Testing of Prestressed, High Performance Concrete, Bridge Girders". Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7131.
Texto completoBarrus, Natasha Christine. "Sensitivity of Resistivity Measurements on Concrete Bridge Decks to Operator-Controlled and Concrete Material Variables". BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3203.
Texto completoHuffman, Jonathan M. "Destructive Testing of a Full-Scale 43 Year Old Adjacent Prestressed Concrete Box Beam Bridge: Middle and West Spans". Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1331319933.
Texto completoEccles, Bradley James. "The use of non-linear vibrations in the health monitoring of reinforced concrete structures". Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323189.
Texto completoChalishajar, Nirajkumar. "Condition assessment of concrete bridge girders using modal testing - a preliminary study". Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=67040.
Texto completoL'auteur présente une étude préliminaire de la faisabilité d'utiliser des techniques d'analyse modale dans les poutres en béton armé comme méthode non-destructive d'évaluation de leur résistance.Un survol de l'état de détérioration des ponts au Canada permet d'abord d'établir les besoins les plus urgents. La thèse résume ensuite l'état des connaissances sur les modes de détérioration les plus communs dans les ponts en béton, soit la corrosion des aciers d'armature et les effets cycliques des conditions saisonnières de gel et dégel. Un résumé des étapes de base de l'inspection des ponts est également suivi d'une revue sommaire de la recherche sur les méthodes d'analyse modale.L'aspect expérimental de la recherche comprend des tests de mesures modales sur cinq spécimens de poutres en béton armé afin d'évaluer les variations de la fréquence naturelles des spécimens en fonction de leur état de fissuration induite par des surcharges. L'analyse des résultats indique clairement que la fréquence naturelle est réduite par les changements de rigidité des poutres selon le niveau d'endommagement. Les résultats de cette étude préliminaire indiquent que les méthodes vibrationnelles sont utiles pour évaluer la condition structurale des composants.
Black, Rebecca Eileen. "Large-Scale Testing of Low-Strength Cellular Concrete for Skewed Bridge Abutments". BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7708.
Texto completoRemund, Tyler Kirk. "Large-Scale Testing of Low-Strength Cellular Concrete for Skewed Bridge Abutments". BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/7213.
Texto completoCope, M. D. "Experimental investigations and non-linear numerical analysis of skewed one-way prestressed concrete bridge decks". Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233798.
Texto completoBolduc, Matthew W. "Full-Scale Testing of Pretensioned Concrete Girders with Partially Debonded Strands". University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613748086228573.
Texto completoSLACK, MICHAEL JAMES. "EXPERIMENTAL TESTING OF NON-EMBEDDED POSITIVE MOMENT CONNECTIONS". University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1022154276.
Texto completoGovindarajan, Balakumaran Soundar Sriram. "Corrosion Testing and Modeling of Chloride-Induced Corrosion Deterioration of Concrete Bridge Decks". Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26437.
Texto completoPh. D.
Larsen, Jacob Lynn. "Automated Impact Response Sounding for Accelerated Concrete Bridge Deck Inspection". BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6989.
Texto completoKalabon, Amy Elizabeth. "Implementation and Field Testing of Improved Bridge Parapet Designs". Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1399314661.
Texto completoGaras, Yanni Victor Youssef. "Multi-scale investigation of tensile creep of ultra-high performance concrete for bridge applications". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31689.
Texto completoCommittee Co-Chair: Kimberly Kurtis; Committee Co-Chair: Lawrence Kahn; Committee Member: Arun Gokhale; Committee Member: James Lai; Committee Member: T. Russell Gentry. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Unruh, Richard Cornelius 1974. "The use of nondestructive testing methods for the condition assessment of concrete bridge girders". Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29420.
Texto completoIncludes bibliographical references (p. 68-72).
There are over 594,000 publicly controlled bridges in the United States. Concrete and pre-stressed concrete bridges account for nearly 50% of the bridges in the US inventory. This proportion is increasing each year, as new bridges tend to be constructed of concrete. This trend makes it vital for engineers to be able to accurately assess the condition of concrete for maintenance and repair decisions. The use of nondestructive testing methods can help reduce the backlog of deficient bridges in two ways. First, these techniques will allow inspectors to get a more accurate view of the condition of a bridge. The second way by which NDT can help is by allowing inspectors to locate damage earlier. This thesis is an attempt to capture the most current ideas for a very specific application of NDT: determining the condition of reinforced concrete bridges overall and bridge girders, in particular. To this end, attention is given to why NDT is needed and what aspects of concrete condition can be addressed with NDT. Some NDT methodologies that are, or may soon be, promising for concrete applications are discussed. Case studies are presented to demonstrate how NDT can be applied to concrete bridge girders and proposals are made for future areas of study and development.
by Richard Cornelius Unruh, III.
M.Eng.
Bryant, James William Jr. "Non-Invasive Permeability Assessment of High-Performance Concrete Bridge Deck Mixtures". Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/27241.
Texto completoPh. D.
Setty, Clinton J. "Truck Testing and Load Rating of a Full-Scale 43-Year-Old Prestressed Concrete Adjacent Box Beam Bridge". Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1331318991.
Texto completoMarson, Julia Elizabeth. "Cyclic testing of concrete-filled circular steel tube bridge columns having encased fixed-based detail". Thesis, University of Ottawa (Canada), 2000. http://hdl.handle.net/10393/9331.
Texto completoMarson, Julia. "Cyclic testing of concrete-filled circular steel tube bridge columns having encased fixed based detail". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0016/MQ57138.pdf.
Texto completoHoki, Jeffrey Ryan. "Analysis of Selected Factors Affecting Concrete Cover Measurements on Bridge Decks". BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2617.
Texto completo