scholarly journals Finite segment method for calculating the shear lag in thin-walled curved box girders

2009 ◽  
Vol 58 (6) ◽  
pp. 4002
Author(s):  
Wu You-Ming ◽  
Yue Zhu-Feng ◽  
Lyu Zhen-Zhou
Keyword(s):  
Shear Lag ◽  
Box Girders ◽  
Finite Segment ◽  
Finite Segment Method ◽  
Thin Walled

Beam finite element for thin-walled box girders considering shear lag and shear deformation effects

2021 ◽  
Vol 233 ◽  
pp. 111867
Author(s):  
Xiayuan Li ◽  
Shui Wan ◽  
Yuanhai Zhang ◽  
Maoding Zhou ◽  
Yilung Mo
Keyword(s):  
Finite Element ◽  
Shear Deformation ◽  
Shear Lag ◽  
Box Girders ◽  
Thin Walled

Shear Lag Effect of Continuous Curved Box Girder with Initial Curvature

2012 ◽  
Vol 538-541 ◽  
pp. 1701-1704
Author(s):  
You Ming Wu ◽  
Yong Jun Lu ◽  
Han Shi
Keyword(s):  
Model Tests ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girder ◽  
Finite Segment ◽  
Homogeneous Solutions ◽  
Initial Curvature ◽  
Lag Effect ◽  
Finite Segment Method ◽  
Displacement Patterns

The homogeneous solutions of the governing differential equations for shear lag are used as the displacement patterns of the finite segment are presented. A finite segment model with consideration of initial curvature, bending, torsion and shear lag is established. In addition, the tests of the two-span continuous curved box girder and numerical calculations of the model tests by finite segment method and finite element method are made. The results of the model tests and numerical calculation are consistent with each other. An actual example was given to investigate the shear lag effect of a continuous curved box girder under load. The research results show that the initial curvature has an obvious influence on the shear lag effect of a continuous curved box girder.

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

Shear Lag in Thin-Walled Box Girder with Variable Section

2011 ◽  
Vol 194-196 ◽  
pp. 1165-1169
Author(s):  
Yu Hong Zhang ◽  
Zi Jiang Yang ◽  
Shi Zhong Liu
Keyword(s):  
Significant Influence ◽  
Width Ratio ◽  
Stiffness Ratio ◽  
Shear Lag ◽  
Box Girders ◽  
Box Girder ◽  
Lag Effects ◽  
Variable Section ◽  
Thin Walled ◽  
Span Width

In this paper, a equivalent-section method of analyzing shear lag effects in box girders is presented. The effect of two major parameters on shear lag is investigated for cantilever and continuous box girders with variable section under two kinds of loads. It is shown that the span-width ratio, in addition to the flange stiffness to total stiffness ratio, has a significant influence on the shear lag. Finally, conclusions are drawn with regard to further study and research.

scholarly journals A Finite Segment Method for Skewed Box Girder Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Xingwei Xue ◽  
Jiawei Wu ◽  
Junlong Zhou ◽  
Hongnan Li
Keyword(s):  
Three Dimensional ◽  
Beam Element ◽  
Dimensional Structure ◽  
Elastic Displacement ◽  
Box Girders ◽  
Box Girder ◽  
Significant Saving ◽  
Finite Segment ◽  
Skew Plate ◽  
Finite Segment Method

A finite segment method is presented to analyze the mechanical behavior of skewed box girders. By modeling the top and bottom plates of the segments with skew plate beam element under an inclined coordinate system and the webs with normal plate beam element, a spatial elastic displacement model for skewed box girder is constructed, which can satisfy the compatibility condition at the corners of the cross section for box girders. The formulation of the finite segment is developed based on the variational principle. The major advantage of the proposed approach, in comparison with the finite element method, is that it can simplify a three-dimensional structure into a one-dimensional structure for structural analysis, which results in significant saving in computational times. At last, the accuracy and efficiency of the proposed finite segment method are verified by a model test.

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