Evaluation of Cast-in-Place Splice Regions of Spliced I-Girder Bridges

Williams, Christopher S.; Moore, Andrew M.; Al-Tarafany, Dhiaa; Massey, Joshua B.; Bayrak, Oguzhan; Jirsa, James O.; Ghannoum, Wassim M.

doi:10.14359/51716804

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Yan et al 9 revealed that the number of strands and the corrosion length were critical indicators of the degradation of the bending capacity of precast, pretensioned girders. Alirezaei et al 10 investigated three end-region reinforcement methods to reduce the crack width and stress in steel girders. Honarvar et al 12 used a probabilistic method for the stress analyses of concrete beams and stated that thermal effects should be considered.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the bending performance of a precast, pretensioned high-strength concrete I-girder with pretensioned double broken strands

Lu,

Zheng,

Chen

et al. 2024

Preprint

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Precast, pretensioned concrete girders are extensively used in bridge engineering to prevent damage to concrete girders, such as the loss of prestress and the corrosion of strands. Existing studies of the mechanical performance and failure characteristics of bridge girders had shortcomings, resulting in potential safety hazards. This study conducted a full-scale model experiment and theoretical analysis of the bending performance of a 35-m long precast, pretensioned concrete I-girder with pretensioned double broken strands. The cracks and bending damage were investigated. The results showed that the maximum vertical displacement of the composite girder was much lower than the required standard value, with a crack factor and bearing capacity factor of 1.31 and 1.54, respectively. The bending stiffness of the composite girder decreased by 70%. Many cracks occurred in the concrete, resulting in excess stress of the steel bars and prestressed strands. The crack width during loading was much smaller than the theoretical one in the Specifications for Highway Reinforced Concrete Prestressed Concrete Bridge Culverts(JTG 3362 − 2018). Therefore, the girder exhibited optimum bending stiffness, sufficient crack resistance, acceptable ultimate bending capacity, and ductile failure performance. The mechanical behavior and failure mechanism during loading were investigated. This study provides recommendations for the design, maintenance, and damage assessment of this bridge type to improve the service lives of bridges.

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Section: Introductionmentioning

confidence: 99%

Experimental study on the bending performance of a precast, pretensioned high-strength concrete I-girder with pretensioned double broken strands

Lu,

Zheng,

Chen

et al. 2024

Preprint

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“…Research in Nebraska recommended changes to the grouting specifications to address problems with spliced I-girder bridges (2). Other papers have discussed the advantages of the spliced girder design, which include longer spans and fewer joints (3,4).…”

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confidence: 99%

Problems with Continuous Spliced Posttensioned–Prestressed Concrete Bulb-Tee Girder Center Spans at West Point, Virginia

Sprinkel

Balakumaran

2017

Transportation Research Record: Journal of the Transportation R

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The Lord Delaware and Eltham Bridges carry traffic on US-33 over the Mattaponi and Pamunkee Rivers in Virginia. Completed in 2006 and 2007, respectively, the bridges are similar in that they have prestressed, precast tee-beam approach spans and two four-span continuous spliced posttensioned–prestressed precast bulb-tee girder center spans. Constructed with the latest prestressed–posttensioned precast technologies, the structures were expected to provide relatively maintenance-free performance for more than 100 years. In May 2015 during a biannual inspection, a spall that exposed a tendon duct was reported in the web of an exterior girder of the Lord Delaware bridge, raising concerns about the life of the of the posttensioned lightweight concrete girders. The tendon grout was a high-performance prepackaged mixture. In-depth inspections identified cracking, leaking, and spalling in the webs of the beams and problems with the grouted tendons that included voids, soft grout, water, and corroding strands. Ground-penetrating radar worked well to locate the tendons, and impact echo worked well to determine the condition of the grout. Destructive drilling and sampling were used to confirm the impact echo readings and to evaluate the condition of the grout. Access to the strands at the anchors and over the piers where voids are typically located was not possible because at the anchors the web thickness was the same as the flange, and over the piers the tendons were in the top flange of the beams. A suitable repair has not been determined.

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Bending behaviour of precast concrete segmental girders with steel rebars through epoxy joints

Duanmu,

Xu,

Qiu

et al. 2024

Structures

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Evaluation of Cast-in-Place Splice Regions of Spliced I-Girder Bridges

Cited by 3 publications

References 11 publications

Experimental study on the bending performance of a precast, pretensioned high-strength concrete I-girder with pretensioned double broken strands

Experimental study on the bending performance of a precast, pretensioned high-strength concrete I-girder with pretensioned double broken strands

Problems with Continuous Spliced Posttensioned–Prestressed Concrete Bulb-Tee Girder Center Spans at West Point, Virginia

Bending behaviour of precast concrete segmental girders with steel rebars through epoxy joints

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