Membrane forces acting on thin-walled box girders considering shear lag effect

2004 ◽  
Vol 42 (5) ◽  
pp. 741-757 ◽  
Author(s):  
Q.Z. Luo ◽  
J. Tang ◽  
Q.S. Li ◽  
G.D. Liu ◽  
J.R. Wu
Keyword(s):  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Lag Effect ◽  
Thin Walled

scholarly journals Prediction of Shear Lag Effect in Thin-Walled Single-Box Multicell Box Girder Based on the Modified Warping Displacement Function

2020 ◽  
Vol 2020 ◽  
pp. 1-19
Author(s):  
Xiayuan Li ◽  
Shui Wan ◽  
Kongjian Shen ◽  
Peng Zhou ◽  
Xiao Wang
Keyword(s):  
Internal Force ◽  
Displacement Function ◽  
Force Balance ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Box Girder ◽  
Lag Effect ◽  
Warping Displacement ◽  
Thin Walled

In this study, an effective and accurate theoretical analysis method for predicting the shear lag effect in the thin-walled single-box multicell box girder is presented. The modifications of longitudinal warping displacement functions at the flanges are fully investigated, including the shear lag width (bij) of flanges, the coefficients (αij) of shear lag warping functions, the deformation compatibility conditions in flanges, and the internal force balance (D). The initial shear deformation (γ03) in the top lateral cantilever flanges is innovatively introduced in multicell box girders and obtained by the designed procedure. In addition, the transverse distribution function for describing the longitudinal warping displacement is deduced and expressed in the form of the cosine function. Based on the principle of minimum potential energy, the governing differential equations are derived and solved with the associated boundary and load conditions. The accuracy and applicability of the proposed method (SL-THY2) are validated for four thin-walled single-box multicell (two- and three-cell) box girders with the results derived from the solid finite element method.

Geometric Nonlinear Analysis of Curved Box Continuous Girders Considering Shear Lag Effect

2011 ◽  
Vol 243-249 ◽  
pp. 1811-1816 ◽  
Author(s):  
Qi Zhi Luo ◽  
Yu Ji Chen
Keyword(s):  
Large Deflection ◽  
Computational Method ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Box Girder ◽  
Lag Effect ◽  
Thin Walled ◽  
Geometric Nonlinear Analysis ◽  
Good Agreement

The analytical theory and computational method for thin-walled curved box girders in terms of the shear lag effect and geometric nonlinearity are presented. Based on the potential variational principle and the theory of thin-walled box girders, the geometry nonlinear governing differential equations of thin-walled curved box girder considering the influence of the shear lag effect of flange’s stress and the large deflection is established. The equation is solved by means of Newton-Raphon iteration method. The results from the present method are in good agreement with those of the test and the segment method. The numerical examples are conducted to verify the accuracy and reliability of the present theories. It is shown that the proposed formulae and method could be referenced to the design for the thin-walled curved box girders considering shear lag effect.

Ultimate load analysis of thin-walled box beams considering shear lag effect

2004 ◽  
Vol 42 (8) ◽  
pp. 1199-1210 ◽  
Author(s):  
Yaping Wu ◽  
Shaoshui Yu ◽  
Chonghui Shi ◽  
Jianjun Li ◽  
Yuanming Lai ◽  
...  
Keyword(s):  
Ultimate Load ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Lag Effect ◽  
Box Beams ◽  
Thin Walled ◽  
Load Analysis

The stochastic finite segment in the analysis of the shear-lag effect on box-girders

2001 ◽  
Vol 23 (11) ◽  
pp. 1461-1468 ◽  
Author(s):  
L.F. Yang ◽  
A.Y.T. Leung ◽  
Q.S. Li
Keyword(s):  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Finite Segment ◽  
Lag Effect

DISCUSSION: THE PREDICTION OF THE SHEAR LAG EFFECT IN BOX GIRDERS.

1977 ◽  
Vol 63 (4) ◽  
pp. 947-950
Author(s):  
KR MOFFATT ◽  
AR TAHERIAN ◽  
PJ DOWLING ◽  
HR EVANS
Keyword(s):  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Lag Effect

scholarly journals Analysis of Shear Lag Effect in Twin-cell Box Girders

2019 ◽  
Vol 563 ◽  
pp. 032043
Author(s):  
Min Luo ◽  
Peng-zhen Lin ◽  
Li-xiang Sun
Keyword(s):  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Lag Effect

Beam Finite Element Including Shear Lag Effect of Extra-Wide Concrete Box Girders

2018 ◽  
Vol 23 (11) ◽  
pp. 04018083 ◽  
Author(s):  
Guangpan Zhou ◽  
Aiqun Li ◽  
Jianhui Li ◽  
Maojun Duan ◽  
Billie F. Spencer ◽  
...  
Keyword(s):  
Finite Element ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Lag Effect

scholarly journals A Shear Lag Analysis for Composite Box Girders with Deformable Connectors

10.14311/640 ◽  
2004 ◽  
Vol 44 (5-6) ◽  
Author(s):  
V. Křístek
Keyword(s):  
Harmonic Analysis ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girders ◽  
Lag Effects ◽  
Lag Effect

A method is proposed for shear lag analysis which can be applied to steel-concrete composite box girders. The proposed method uses harmonic analysis and allows the determination of shear lag effects from simple calculations so that the method is regarded as a design aid. The character of the method can illustrate the influence of certain key parameters upon the extent of the shear lag effect. 

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