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    Performance Evaluation of Semi-Integral Abutment Bridge Ends Based on Approach Slab Details

    Source: Journal of Bridge Engineering:;2025:;Volume ( 030 ):;issue: 003::page 04024117-1
    Author:
    Shadi Azad
    ,
    Behrouz Shafei
    DOI: 10.1061/JBENF2.BEENG-7179
    Publisher: American Society of Civil Engineers
    Abstract: Semi-integral abutments help increase the service life of bridges by eliminating the issues associated with the use of expansion joints. However, the behavior of such abutments under service loads has complexities, especially in their connections to approach slabs. This motivated the current study to systematically investigate the in-service performance of semi-integral abutment bridges through a holistic suite of visual inspections, long-term monitoring programs, and numerical analyses. For this purpose, nine bridges were visually inspected to identify common problems associated with semi-integral abutments, including joint issues, embankment erosion, cracks in approach slabs, and water leakage. Additionally, two bridges were instrumented with various sensors at the time of construction and monitored to understand their long-term behavior under service loads. This was with a focus on top and bottom approach slab strains, longitudinal and transverse abutment displacements, and earth pressures on abutment walls. Two bridges with a high skew angle was further studied numerically in four different design configurations to evaluate the stress, strain, and displacement distributions in the approach slab and tie bars. The numerical investigations also assessed the bridge end’s response to embankment settlement, given the frequent occurrence of settlement-related issues. The study’s results and findings provided new insights into key structural response measures paired with relevant recommendations. The outcome facilitates the design and assessment of semi-integral abutment bridge ends, taking into account various approach slab details.
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      Performance Evaluation of Semi-Integral Abutment Bridge Ends Based on Approach Slab Details

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4305088
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    contributor authorShadi Azad
    contributor authorBehrouz Shafei
    date accessioned2025-04-20T10:37:28Z
    date available2025-04-20T10:37:28Z
    date copyright12/27/2024 12:00:00 AM
    date issued2025
    identifier otherJBENF2.BEENG-7179.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305088
    description abstractSemi-integral abutments help increase the service life of bridges by eliminating the issues associated with the use of expansion joints. However, the behavior of such abutments under service loads has complexities, especially in their connections to approach slabs. This motivated the current study to systematically investigate the in-service performance of semi-integral abutment bridges through a holistic suite of visual inspections, long-term monitoring programs, and numerical analyses. For this purpose, nine bridges were visually inspected to identify common problems associated with semi-integral abutments, including joint issues, embankment erosion, cracks in approach slabs, and water leakage. Additionally, two bridges were instrumented with various sensors at the time of construction and monitored to understand their long-term behavior under service loads. This was with a focus on top and bottom approach slab strains, longitudinal and transverse abutment displacements, and earth pressures on abutment walls. Two bridges with a high skew angle was further studied numerically in four different design configurations to evaluate the stress, strain, and displacement distributions in the approach slab and tie bars. The numerical investigations also assessed the bridge end’s response to embankment settlement, given the frequent occurrence of settlement-related issues. The study’s results and findings provided new insights into key structural response measures paired with relevant recommendations. The outcome facilitates the design and assessment of semi-integral abutment bridge ends, taking into account various approach slab details.
    publisherAmerican Society of Civil Engineers
    titlePerformance Evaluation of Semi-Integral Abutment Bridge Ends Based on Approach Slab Details
    typeJournal Article
    journal volume30
    journal issue3
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/JBENF2.BEENG-7179
    journal fristpage04024117-1
    journal lastpage04024117-17
    page17
    treeJournal of Bridge Engineering:;2025:;Volume ( 030 ):;issue: 003
    contenttypeFulltext
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