Performance of UHPC shear keys in box girder bridges-field and finite element study

Neirinck, Timothy; Semendary, Ali A.; Murison, Evangeline; Svecova, Dagmar

doi:10.1016/j.engstruct.2023.116896

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Single-cell box girders have become widely utilized in the construction of medium- and long-span highway bridges [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ] due to their aesthetical appearance and exceptional resistance to bending and torsional forces [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. The introduction of ultra-high performance concrete (UHPC), an advanced cementitious composite characterized by its low permeability and ultra-high strength [ 18 ], holds promising prospects for the transition of box girder towards thin-walled structures with larger spans and wider rib spacings [ 19 , 20 , 21 , 22 , 23 , 24 ]. Li et al [ 25 ] showcased the UHPC girder bridge for the Fourth Beijiang River Bridge in Yingde City (in China), which featured a larger span (102 m) and reduced cross-section dimensions (15–20 cm).…”

Section: Introductionmentioning

confidence: 99%

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Wang,

Wu,

Zhang

et al. 2024

Materials

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Distortion deformation usually imposes a potential threat to bridge safety. In order to comprehensively understand the distortion effect on thin-walled ultra-high performance concrete (UHPC) box girders, an innovative approach encompassing the governing distortion differential equation is introduced in this study based on the general definition of distortion angle within the cross-section plane. The analytical results obtained from the proposed method are in accordance with those obtained from the energy method, and exhibit favorable agreement with experimental findings documented in the existing literature. Furthermore, a finite element model is developed on the ANSYS 2021 R1 software platform with the employment of a Shell 63 element. Numerical outcomes are also in good agreement with the experimental data, affirming the validity and reliability of the findings. In addition, parameter analysis results indicate that the distortion angle remains approximately constant at a location approximately 1/10 of the span from the mid-span cross-section of the box girder, regardless of changes in the span-to-depth ratio. Increasing the web thickness yields a notable reduction in the distortion effects, and decreasing the wall thickness can effectively mitigate the distortion-induced transverse bending moment. Compared with normal-strength concrete box girders, UHPC box girders can reduce the distortion angle within the span range, which is beneficial for maintaining the overall stability of the box girders. The outcomes obtained from this study yield engineers an enhanced understanding of distortion effect on the UHPC girder performance.

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Section: Introductionmentioning

confidence: 99%

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Wang,

Wu,

Zhang

et al. 2024

Materials

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A Review on Mechanism and Influencing Factors of Shear Performance of UHPC Beams

Jin,

Yang,

Peng

et al. 2024

Buildings

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Ultra-High-Performance Concrete (UHPC) is increasingly used in various engineering projects due to its exceptional mechanical properties. This work conducts a literature review of research on the shear performance of UHPC beams in recent decades, with a focus on summarizing the formulas for calculating shear capacity and the main factors influencing shear performance. Firstly, this work reviews the calculation methods for the shear capacity of UHPC beams in different countries, along with their respective advantages and limitations. Subsequently, it provides a detailed analysis of various factors influencing the shear performance of UHPC beams, including longitudinal and stirrup reinforcement, steel fiber content, aggregates, admixtures, the shear-span ratio, shear keys, bolts, shear-reinforcement techniques, and environmental impacts. Through horizontal comparisons, the performance of UHPC beams and ordinary concrete beams under similar experimental conditions is examined to reveal the optimal shear working conditions for UHPC beams. Additionally, it is found that UHPC performs exceptionally well in composite beams, being compatible with numerous materials and significantly enhancing the shear strength of these beams. Lastly, the paper proposes suggestions for maximizing the shear performance of UHPC beams within a safe and reliable operating range and outlines future research directions.

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Performance of UHPC shear keys in box girder bridges-field and finite element study

Cited by 2 publications

References 16 publications

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

A Review on Mechanism and Influencing Factors of Shear Performance of UHPC Beams

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