scholarly journals LATERAL TORSIONAL BUCKLING OF KNEE MEMBERS OF FRAMES (2) : Lateral Buckling of Cord Members of Truss

1971 ◽  
Vol 183 (0) ◽  
pp. 49-56,92
Author(s):  
TOSHIRO SUZUKI ◽  
ISAO KUBODERA
Keyword(s):  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Lateral Buckling

Lateral-torsional buckling capacity of Hybrid Double-I-Box Beams: A numerical approach

2018 ◽  
Vol 22 (3) ◽  
pp. 641-655 ◽  
Author(s):  
MS Deepak ◽  
VM Shanthi
Keyword(s):  
Finite Element ◽  
Numerical Approach ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Lateral Buckling ◽  
Element Analysis ◽  
Section Modulus ◽  
Parameter Ratio ◽  
Box Beams ◽  
Hot Rolled

In this article, a parametric study on the lateral-torsional buckling performance of thin-walled cold-formed steel Hybrid Double-I-Box Beams through numerical analyses has been presented. These built-up beams have distinctive cross-section geometry; the presence of more section modulus at the flanges provides high resistance to flexural bending and the closed-box portion offers high stiffness to resist torsion and lateral buckling. Therefore, these beams can be used for longer spans. The nonlinear finite element analysis was performed using ABAQUS software. All the beams were modelled as ideal finite element models adopting simply supported boundary conditions and loads were applied as end moments. To acquire a large number of data, three varying parameters were considered namely, hybrid parameter ratio, that is, yield strength of flange steel to web steel (1.0, 1.3, 1.5 and 1.7); ratio of breadth to depth of the beam (4/6, 5/6, 6/6 and 7/6); and length of the beam (1.0, 2.5, 5.0, 10, 15, 20, 30, 40, 50 and 60 in m). The thickness of both the flanges and the webs were 2.5 mm. All these parameters alter the overall slenderness of the members. It is shown that at larger spans, Hybrid Double-I-Box Beams experience lateral buckling. The results obtained from the numerical studies were plotted on nondimensional moment versus nondimensional slenderness graph. These results were compared with the predictions using effective width method design rules specified in Euro codes EN 3-1-3 and buckling curve-d of EN 3-1-1, which was originally adopted lateral-torsional buckling capacities of hot-rolled steel ‘I’ sections, and the adequacy is checked. It was found that Hybrid Double-I-Box Beams has higher lateral-torsional buckling capacity than common ‘I’ or box sections. Hence, a new simplified design equation was proposed for determining lateral-torsional buckling capacity of Hybrid Double-I-Box Beams.

Lateral-Torsional Buckling Strength and Design of Steel Arches

2011 ◽  
Vol 250-253 ◽  
pp. 2645-2649 ◽  
Author(s):  
Yong Hua Yang ◽  
Chun Xia Chen ◽  
Ming Ji Fang
Keyword(s):  
Load Distribution ◽  
Load Condition ◽  
Parameter Analysis ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Lateral Buckling ◽  
Buckling Mode ◽  
Buckling Strength ◽  
Beam Columns ◽  
Interaction Equation

The arches resist general loading by a combination of axial compression and bending actions which vary along the arch. Under these actions, an arch may suddenly deflect laterally and twist out of the plane of loading and fail in a lateral-torsional buckling mode. This paper investigates the lateral buckling strength and design of steel arches under general loading. It is found that the subtended angle and load distribution significantly affect the lateral buckling strength of a steel arch. The rules for designing steel beam-columns against lateral buckling cannot be used directly in the design of steel arches against lateral buckling under general loading, because they do not include the effects of the subtended angle. The buckling loads of arch with different load condition, subtended angle, manner of laying section are calculated by finite element method. The interaction equation against lateral-torsional buckling for steel arches subjected to combination of bending and axial compressive actions is proposed. The safety and applicability of the interaction equation is verified by parameter analysis.

Design rules for lateral torsional buckling of channel sections subject to web loading

Stahlbau ◽  
2008 ◽  
Vol 77 (4) ◽  
pp. 247-256 ◽  
Author(s):  
H.H. (Bert) Snijder ◽  
J.C.D. (Hans) Hoenderkamp ◽  
M.C.M. (Monique) Bakker ◽  
H.M.G.M. (Henri) Steenbergen ◽  
C.H.M. (Karin) de Louw
Keyword(s):  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Design Rules

Wind‐Induced Nonlinear Lateral‐Torsional Buckling of Cable‐Stayed Bridges

1994 ◽  
Vol 120 (2) ◽  
pp. 486-506 ◽  
Author(s):  
Virote Boonyapinyo ◽  
Hitoshi Yamada ◽  
Toshio Miyata
Keyword(s):  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Cable Stayed Bridges
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