A beam element for steel-concrete composite beams with shear lag and area load

2005 ◽  
pp. 747-752 ◽  
Author(s):  
F SUN
Keyword(s):  
Beam Element ◽  
Composite Beams ◽  
Shear Lag

A finite beam element for analyzing shear lag and shear deformation effects in composite-laminated box girders

2004 ◽  
Vol 82 (9-10) ◽  
pp. 763-771 ◽  
Author(s):  
Yaping Wu ◽  
Yuanming Lai ◽  
Xuefu Zhang ◽  
Yuanlin Zhu
Keyword(s):  
Shear Deformation ◽  
Beam Element ◽  
Shear Lag ◽  
Box Girders

GBT Analysis of Steel-Concrete Composite Beams: Recent Developments

2020 ◽  
Vol 20 (13) ◽  
pp. 2041007
Author(s):  
Rodrigo Gonçalves ◽  
Dinar Camotim ◽  
David Henriques
Keyword(s):  
Finite Element ◽  
Beam Theory ◽  
Composite Beams ◽  
Arbitrary Cross Section ◽  
Mode Shapes ◽  
Shear Lag ◽  
Buckling Mode ◽  
Concrete Cracking ◽  
Lag Effects ◽  
Recent Developments

This paper reports the most recent developments concerning Generalized Beam Theory (GBT) formulations, and corresponding finite element implementations, for steel-concrete composite beams. These formulations are able to perform the following types of analysis: (i) materially nonlinear analysis, to calculate the beam load-displacement response, up to collapse, including steel plasticity, concrete cracking/crushing and shear lag effects, (ii) bifurcation (linear stability) analysis, to obtain local/distortional bifurcation loads and buckling mode shapes of beams subjected to negative (hogging) bending, accounting for shear lag and concrete cracking effects and (iii) long-term service analysis including creep, cracking and arbitrary cross-section deformation (which includes shear lag) effects. The potential (computational efficiency and accuracy) of the proposed GBT-based finite elements is illustrated through several numerical examples. For comparison purposes, results obtained with standard finite strip and shell/brick finite element models are provided.

Numerical Solution of Section Stress about Steel-Concrete Composite Beams

2010 ◽  
Vol 163-167 ◽  
pp. 1614-1619
Author(s):  
Hai Gen Cheng ◽  
Yan Lou Yu ◽  
Yong Zhang
Keyword(s):  
Differential Equation ◽  
Cross Section ◽  
Beam Theory ◽  
Composite Beams ◽  
Nonuniform Distribution ◽  
Concrete Slabs ◽  
Shear Lag ◽  
Box Girder ◽  
Simply Supported ◽  
Lag Effect

Steel-concrete composite beams are composed of concrete slabs and steel girders by shear connectos. Due to the shear lag effect, the longitudinal normal stress of cross section is nonuniform distribution,and it is difficult to analyse the effect of that by ordinary beam theory. A differential equation of equilibrium is constituted corresponding to the compatibility of deformation and the equilibrium of forces about steel-concrete composite beams under particular assumed condition. The method of variable-separating is applied to solve the differential equation with the simply supported boundary condition. An example of steel-concrete composite box girder is given to analyse the effect of shear lag on its stress and approve its applicability.

A CURVED BOX BEAM ELEMENT CONSIDERING SHEAR LAG EFFECT AND ITS STATIC AND DYNAMIC APPLICATIONS

2002 ◽  
Vol 253 (5) ◽  
pp. 1131-1139 ◽  
Author(s):  
WU YAPING ◽  
LAI YUANMING ◽  
ZHU YUANLIN ◽  
PAN WEIDONG
Keyword(s):  
Beam Element ◽  
Shear Lag ◽  
Shear Lag Effect ◽  
Box Beam ◽  
Lag Effect
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