A beam-type element for analyzing the eccentric load effect of box girder bridges

Zhao, Chao; Zhou, Yujie; Zhong, Xiaofeng; Wang, Gang; Yang, Qunyu; Hu, Xiang

doi:10.1016/j.istruc.2021.11.001

Cited by 8 publications

(2 citation statements)

References 28 publications

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“…This model enabled the accurate analysis of distortional behavior in thin-walled box girders with cantilevered flanges. Zhao et al [ 27 ] proposed a beam element with two torsional degrees of freedom (DOFs) and two distortional DOFs, specifically designed to investigate the eccentric load effects in box girder bridges. Zhu et al [ 28 ] developed a one-dimensional model for a curved composite box girder and formulated a highly efficient finite girder element with 26 DOFs, which considered both constrained torsion and distortion.…”

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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“…So far, the prestressed concrete (PC) box girder has been widely used in bridge engineering (Gomez et al, 2011;Zeying et al, 2015;Zhang et al, 2017), but its mechanical and material defects have gradually appeared, many PC box girders have stiffness degradation and beam cracking (He et al, 2021;Limongelli et al, 2018;Zhao et al, 2022). In order to weaken the restraint behaviour of flange and web of PC box girder, French scholars proposed using corrugated steel web instead of PC box girder web, and took the lead in building a cognac bridge in 1986.…”

Section: Introductionmentioning

confidence: 99%

The Multi-Functional Modelling Shear Lag Method for Accurate Calculation of Static Response and Accordion Effect of Improved Composite Box Girders

Ya-nan

Zhang

Wang

2023

BJRBE

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The composite box girder with corrugated web and steel bottom plate (CW-SBS) is a kind of improved steel-concrete structures. The design of CW-SBS box girders needs the accurate method to calculate the working response and accordion effect in consideration of the self-stress equilibrium condition of shear lag warping stress and shear deformation. This study proposes the multi-functional modelling shear lag (MFMSL) method which adopts the four longitudinal displacement difference functions to model the variation of shear lag in the CW-SBS box girders with different wing slab widths and thicknesses. Therefore, MFMSL is a method to calculate the static response and accordion effect of the CW-SBS composite box girders. Structural differential equations based on the energy-variation principle present that the MFMSL method effectively improves the calculating accuracy of the CW-SBS box girder static response, which can be verified by both experimental and simulative results. Also, the MFMSL method demonstrates that the accordion effect of the CW-SBS box girder is stronger than that of the traditional composite box girder and closely relates to the load distribution. Hence, the proposed method further lays the foundation for the analysis and design of CW-SBS box girders.

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End diaphragm and interior cross frame modeling in steel tub girder superstructures

Dolati¹,

Ghodratian-Kashan

Maleki

2023

Structures

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A beam-type element for analyzing the eccentric load effect of box girder bridges

Cited by 8 publications

References 28 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

The Multi-Functional Modelling Shear Lag Method for Accurate Calculation of Static Response and Accordion Effect of Improved Composite Box Girders

End diaphragm and interior cross frame modeling in steel tub girder superstructures

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