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    Field Verification of Simplified Analysis Procedures for Segmental Concrete Bridges

    Source: Journal of Structural Engineering:;2015:;Volume ( 141 ):;issue: 001
    Author:
    Marc Maguire
    ,
    Cristopher D. Moen
    ,
    Carin Roberts-Wollmann
    ,
    Tommy Cousins
    DOI: 10.1061/(ASCE)ST.1943-541X.0001111
    Publisher: American Society of Civil Engineers
    Abstract: Load tests on segmental bridges are uncommon in the literature given their relatively short history and comparatively smaller presence in the national bridge inventory. This paper presents results from two segmental concrete bridge field tests and compares them with common simplified longitudinal and transverse analysis procedures. These single-cell structures, built with balanced cantilever construction, represent two significantly different segmental concrete bridges. Designers frequently use a beamline model for longitudinal analysis. When compared with the load test results, this simple method produces conservative predictions of longitudinal behavior within 20%, which is also reflected in the literature. Conversely, little information exists in the literature on transverse bending analysis. When analyzing the localized transverse bending from concentrated wheel loads, designers commonly use an equivalent frame model. Most frequently, designers use influence surfaces to estimate the scaled loads to apply to these two-dimensional frame models. This simplified approach is shown to be conservative overall but cannot always predict bending sense and frequently overpredicts demand in excess of 100%.
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      Field Verification of Simplified Analysis Procedures for Segmental Concrete Bridges

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    http://yetl.yabesh.ir/yetl1/handle/yetl/74366
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    contributor authorMarc Maguire
    contributor authorCristopher D. Moen
    contributor authorCarin Roberts-Wollmann
    contributor authorTommy Cousins
    date accessioned2017-05-08T22:13:42Z
    date available2017-05-08T22:13:42Z
    date copyrightJanuary 2015
    date issued2015
    identifier other39912988.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/74366
    description abstractLoad tests on segmental bridges are uncommon in the literature given their relatively short history and comparatively smaller presence in the national bridge inventory. This paper presents results from two segmental concrete bridge field tests and compares them with common simplified longitudinal and transverse analysis procedures. These single-cell structures, built with balanced cantilever construction, represent two significantly different segmental concrete bridges. Designers frequently use a beamline model for longitudinal analysis. When compared with the load test results, this simple method produces conservative predictions of longitudinal behavior within 20%, which is also reflected in the literature. Conversely, little information exists in the literature on transverse bending analysis. When analyzing the localized transverse bending from concentrated wheel loads, designers commonly use an equivalent frame model. Most frequently, designers use influence surfaces to estimate the scaled loads to apply to these two-dimensional frame models. This simplified approach is shown to be conservative overall but cannot always predict bending sense and frequently overpredicts demand in excess of 100%.
    publisherAmerican Society of Civil Engineers
    titleField Verification of Simplified Analysis Procedures for Segmental Concrete Bridges
    typeJournal Paper
    journal volume141
    journal issue1
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)ST.1943-541X.0001111
    treeJournal of Structural Engineering:;2015:;Volume ( 141 ):;issue: 001
    contenttypeFulltext
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