Transverse Shear in Multibeam Bridges

Bakht, Baidar; Jaeger, Leslie G.; Cheung, Mo Shing

doi:10.1061/(asce)0733-9445(1983)109:4(936)

Cited by 15 publications

(26 citation statements)

References 4 publications

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“…The Ontario Bridge Design Code assumes that the transfer of load from one beam to another takes place mainly through transverse shear and that the transverse flexural rigidity is equal to zero. '• 8 Charts such as those shown in Fig. 7 are used to determine the transverse shear force to be resisted by the joint for the appropriate values of span and {3, where f3 is given I wid th.…”

Section: -100mentioning

confidence: 99%

Transverse Design of Adjacent Precast Prestressed Concrete Box Girder Bridges

Elremaily¹,

Tadros²,

Yamane³

et al. 1996

pcij

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Section: -100mentioning

confidence: 99%

Transverse Design of Adjacent Precast Prestressed Concrete Box Girder Bridges

Elremaily¹,

Tadros²,

Yamane³

et al. 1996

pcij

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“…4 To mitigate longitudinal deck cracking, different methods have been developed to analyze and design the connection between the box beams. For example, Bakht et al 5 assumed that the load transfer from one beam to another was primarily through transverse shear, while transverse flexural rigidity was neglected. El-Remaily et al 6 based their calculation for the required TPT force on the flexural rigidity and the lateral moment induced in the bridge due to moving traffic.…”

mentioning

confidence: 99%

Transverse post-tensioning arrangement for side-by-side box-beam bridges

Grace¹,

Jensen²,

Bebawy³

2012

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“…According to the same provision, decks with shear-flexure transfer joints should be modeled as continuous plates, and joints need to be designed for flexure. However, partialdepth shear keys are not able to transfer moments and are required to be designed as hinges (8,9). For this reason, full-depth grouted shear key is required to transfer moments in conjunction with transverse posttensioning or other forms of clamping mechanism.…”

mentioning

confidence: 99%

Rationally Designed Staged Posttensioning to Abate Reflective Cracking on Side-by-Side Box-Beam Bridge Decks

Ulku¹,

Attanayake

Aktan

2010

Transportation Research Record

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Side-by-side box-beam bridges are often used at sites with tight under-clearance requirements and specified for accelerated construction. However, longitudinal reflective deck cracking is a recurring problem for these bridges and it raises concern for their durability and long-term safety. North American practices of the transverse connection design of this particular bridge are discussed in NCHRP Synthesis 393, and the Michigan design is presented as the preferred procedure. The most recent design in Michigan is an empirical procedure that incorporates the majority of the Synthesis 393 recommended best practices. Yet reflective deck cracking persists. A rational design procedure for which an analysis model was developed is presented here. In the rational design procedure, the analysis model is utilized to calculate the moment demand along the transverse joints. A two-stage transverse posttensioning procedure is recommended following AASHTO load and resistance factor design stipulations based on the moment demand calculated from the analysis model. The second stage of posttensioning precompresses the cast-in-place concrete deck, ensuring crack control. The objective of this study is to demonstrate the effectiveness of the two-stage posttensioning design and implementation procedure to mitigate reflective deck cracking. The effectiveness of the recommended design is demonstrated by utilizing a multistep finite element simulation of the construction process under construction and service loads. The cracking potential of the deck is evaluated under both current Michigan Department of Transportation and the proposed two-stage transverse posttensioning schemes. It is demonstrated that the two-stage posttensioning process can eliminate tensile stresses developed under gravity loading and reduce the temperature load effects to abate reflective deck cracking.

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Transverse Shear in Multibeam Bridges

Cited by 15 publications

References 4 publications

Transverse Design of Adjacent Precast Prestressed Concrete Box Girder Bridges

Transverse Design of Adjacent Precast Prestressed Concrete Box Girder Bridges

Transverse post-tensioning arrangement for side-by-side box-beam bridges

Rationally Designed Staged Posttensioning to Abate Reflective Cracking on Side-by-Side Box-Beam Bridge Decks

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