Analysis of Shear Lag Effect in Twin-cell Box Girders

Luo, Min; Lin, Pengzhen; Sun, Liping

doi:10.1088/1757-899x/563/3/032043

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There have also been some changes in the cross-section configuration of box girders, such as the number of box chambers and the form of composite box sections. The traditional single-box single-cell section structure [1]- [3] is lightweight and has strong applicability, but the single-box twin-cell box girder bridge gradually appears in the public's view with the rapid increase of traffic flow [4]- [5]. The stress characteristics of the box girder are completely different from those of the single-box single-cell box girder.…”

Section: Introductionmentioning

confidence: 99%

A one-dimensional high-order dynamic model for twin-cell box girders with deformable cross-section

Zhu,

Zhang,

Zeng

2024

J. vibroeng.

View full text Add to dashboard Cite

A one-dimensional high-order dynamic model for single-box twin-cell box girders is presented together with the pattern recognition algorithm. The model takes into account the deformable cross-section and can accurately predict its 3D dynamic behaviors. The cross-section deformation is captured by basis functions satisfying displacement continuity condition, which is essential to construct the initial model formulation based on the Hamilton principle. The axial variation patterns of generalized coordinates are decoupled by solving the eigenvalue problem. On this basis, the combinations of basis functions are obtained to bring out cross-section deformation. The cross-section deformation, hierarchically organized and physically meaningful, are used to update the basis functions in the reconstructed high-order model. Numerical analysis has verified the accuracy and applicability of the reconstructed one-dimensional high-order model.

show abstract

Section: Introductionmentioning

confidence: 99%

A one-dimensional high-order dynamic model for twin-cell box girders with deformable cross-section

Zhu,

Zhang,

Zeng

2024

J. vibroeng.

View full text Add to dashboard Cite

show abstract

“…The difference in shear lag coefficients for different web plates is not reflected in [30,31]. The authors of [32] present only finite element simulation results and do not offer specific displacement functions.…”

Section: Introductionmentioning

confidence: 99%

Analytical Method of the Shear Lag Effect in Thin-Walled Box Girders Based on the Shear Flow Distribution Law

Shi,

Zhou,

Wang

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

This paper presents an analytical method based on the shear flow distribution law to study the shear lag effect of thin-walled single- and double-cell box girders. The first step in this method is to determine the box girder’s shear flow distribution. Subsequently, a series of novel improved longitudinal displacement functions mathematically expressed as cubic parabolas are established. The parabolic origin of these functions is located at the zero point of the shear flow corresponding to each plate; the unknown parameters used to describe the function form can be determined according to the shear flow distribution, the continuity conditions, and the axial force balance condition. Then, the variational energy method is adopted to derive the governing differential equations. The shear lag effect in thin-walled single- and double-cell box girders under several boundary conditions and load cases is studied and analytical expressions for the shear lag coefficient are derived. Finally, results obtained using the proposed method are validated via comparison with numerical results. The results show that the proposed method can provide reasonable predictions for the shear lag effect of single- and double-cell box girders, and that this method is more straightforward and practical. In addition, the shear lag coefficients at different webs are not entirely equal, which is related to the distance from the web to the zero point of the shear flow.

show abstract

Analysis of Shear Lag Effect in Twin-cell Box Girders

Cited by 2 publications

References 1 publication

A one-dimensional high-order dynamic model for twin-cell box girders with deformable cross-section

A one-dimensional high-order dynamic model for twin-cell box girders with deformable cross-section

Analytical Method of the Shear Lag Effect in Thin-Walled Box Girders Based on the Shear Flow Distribution Law

Contact Info

Product

Resources

About