Shear lag effect on stress concentration in simply-supported stiffened box girder

2021 ◽  
Vol 183 ◽  
pp. 106715
Author(s):  
Eiki Yamaguchi ◽  
Naoto Kittaka ◽  
Buchit Maho ◽  
Piti Sukontasukkul
Keyword(s):  
Stress Concentration ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girder ◽  
Simply Supported ◽  
Lag Effect

Stress concentration and deflection of simply supported box girder including shear lag effect

2008 ◽  
Vol 28 (2) ◽  
pp. 207-220 ◽  
Author(s):  
Eiki Yamaguchi ◽  
Taweep Chaisomphob ◽  
Jaturong Sa-nguanmanasak ◽  
Chartree Lertsima
Keyword(s):  
Stress Concentration ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girder ◽  
Simply Supported ◽  
Lag Effect

Stress Concentration and Deflection of Box Girder under Shear Lag Effect

2010 ◽  
Vol 163-167 ◽  
pp. 2761-2764
Author(s):  
Yu Hong Zhang ◽  
Zi Jiang Yang ◽  
Shi Zhong Liu
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Three Dimensional ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Element Mesh ◽  
Box Girder ◽  
Shell Elements ◽  
Lag Effect ◽  
Three Dimensional Finite Element

The shear lag effect on box girders has been studied by quite a few researchers for many years. However, most of studies are related to shear lag formulas and analytical methods and very few have investigated the effect of stress concentration and deflection. The present study investigates the stress concentration and deflection under shear lag effect in a continuous box girder and a simply supported beam by using the three-dimensional finite element method. The whole girder is modeled by shell elements, and an extensive parametric study with respect to the geometry of a box girder is carried out. The influence of finite element mesh on the shear lag is carefully treated by the multi-mesh extrapolation method.

scholarly journals The shear-lag effect of composite box girder bridges with corrugated steel webs and trusses

2019 ◽  
Vol 181 ◽  
pp. 617-628 ◽  
Author(s):  
Yiyan Chen ◽  
Jucan Dong ◽  
Tianhua Xu ◽  
Yufeng Xiao ◽  
Ruijuan Jiang ◽  
...  
Keyword(s):  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Girder Bridges ◽  
Lag Effect

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.

Study on the Shear Lag Effect of the PC Box Girder Bridge with Corrugated Steel Webs under Concentrated Loads

2014 ◽  
Vol 644-650 ◽  
pp. 5054-5060
Author(s):  
Rui Juan Jiang ◽  
Yu Feng Xiao ◽  
Xiao Wei Yi ◽  
Qi Ming Wu ◽  
Wei Ming Gai
Keyword(s):  
Shear Lag ◽  
Shear Lag Effect ◽  
Element Analysis ◽  
Box Girder ◽  
Current Time ◽  
Lag Effects ◽  
Lag Effect ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Effective Flange Width

There are few studies about the shear lag effect and the effective flange width of the PC (Prestressed Concrete) box girder bridge with corrugated steel webs throughout the world in current time. In the present paper, based on the three-dimensional finite element analysis for a long-span continuous PC box girder bridge with corrugated steel webs and the corresponding conventional box girder bridge with concrete webs, a comparative study on the shear lag effect under vertical loads are carryied out together with the analyslis on the coefficient of the effective flange width. The results show that in the PC box girder with corrugated steel webs, the transverse distributions of longitudinal normal stress on the section of the slabs are obviousely non-uniform and they are different with those in the conventional PC box girder with concrete webs. And moreover, the shear lag effects in top slab of the PC box girder with corrugated steel webs are almost less obvious than those of the conventional PC box girder with concrete webs. However, the shear lag effects in bottom slab of the PC box girder with corrugated steel webs are almost similar to those of the conventional PC box girder with concrete webs, no matter what kind of vertical bending moment the cross section is subjected to

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