Lateral torsional buckling of partially restrained beams of high strength S690 welded I-sections

2021 ◽  
Vol 184 ◽  
pp. 106777
Author(s):  
Kai Wang ◽  
Meng Xiao ◽  
Kwok-Fai Chung ◽  
David A. Nethercot
Keyword(s):  
High Strength ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Partially Restrained

Lateral-torsional buckling of high strength steel beams: Experimental resistance

2021 ◽  
Vol 164 ◽  
pp. 107913
Author(s):  
Trayana Tankova ◽  
Filipe Rodrigues ◽  
Carlos Leitão ◽  
Cláudio Martins ◽  
Luís Simões da Silva
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Steel Beams ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling

scholarly journals Castellated Steel Beams-A Torsional Analysis

2020 ◽  
Vol 9 (5) ◽  
pp. 536-540
Keyword(s):  
Failure Modes ◽  
Weight Ratio ◽  
High Strength ◽  
Steel Beams ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Moment Capacity ◽  
Flexure Mechanism ◽  
Shear Buckling ◽  
Castellated Beam

Practice of castellated beams (CBs) or perforated beams for several structures speedily gaining petition. This is because of the increased depth in the segment, high strength to weight ratio, light in weight, easy to erect, economical, and stronger. The principal advantages of the castellated beam are an attractive provision, an increase in vertical bending stiffness, & ease of service provision. The CBs is prepared from its virgin sections i.e. I beam by cutting it in a zigzag or any suitable cutting pattern and again rejoined it by welding therefore depth of the resulting section increases. The load-carrying capacity of the parent I section is increased with the same quantity of material and weight, due to an increase in depth of beams. Web post-buckling and lateral-torsional buckling failure occur when these beams are subjected to loading, this is the effect of an increase in depth of the castellated beams. There are five basic failure modes associated with castellated steel beams that need to be taken care of 1) Development of flexure mechanism. 2) Lateral-torsional buckling 3) Vierendeel mechanism 4) rupture of the welded joint in a web post 5) shear buckling of a web post. Therefore, in this research paper, an effort has been made to estimate the torsional moment capacity castellated beam for hexagonal or honeycomb opening with 300, 450, 600 & sinusoidal opening with different fillet radii.

Experimental and Numerical Study on Lateral-Torsional Buckling Behavior of High Performance Steel Beams

2018 ◽  
Vol 18 (07) ◽  
pp. 1850090 ◽  
Author(s):  
Y. L. Xu ◽  
Y. J. Shi ◽  
Y. R. Wu ◽  
H. Y. Ban
Keyword(s):  
High Performance ◽  
Numerical Study ◽  
High Strength ◽  
Element Model ◽  
Steel Beams ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Buckling Behavior ◽  
Eurocode 3 ◽  
High Performance Steel

A new type of high performance steel (HPS), designated WGJ steel, with high strength as well as improved fire and corrosion resistance, was recently developed by Wuhan Iron and Steel (Group) Company. This paper investigated the lateral-torsional buckling behavior of beams fabricated of WGJ steel through experimental and numerical analysis. Welded I-section beams were tested under concentrated loads, which indicated that lateral-torsional buckling was the dominant failure mode. A finite element model was established and validated by the experimental results. Parametric analyses were conducted to further understand the effect of steel strength on the lateral-torsional buckling capacity of steel beams. The numerical results were compared with design values obtained from the clauses in Eurocode 3 and GB50017. It is found that the design equations in GB50017 give less safe margins for the overall stability design of welded I-section beams fabricated of WGJ high performance steel, whereas Eurocode 3 appears to be more conservative in all conditions.

Lateral-torsional buckling behaviour of 690 MPa high strength steel beams

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 3999-4010
Author(s):  
Gang Xiong ◽  
Yong Feng ◽  
Qi Peng ◽  
Shao-Bo Kang ◽  
Yue Zhang ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Steel Beams ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling

scholarly journals Laterally Unbraced Length for Preventing Inelastic Lateral-Torsional Buckling of High-Strength Steel Beams

2013 ◽  
Vol 25 (2) ◽  
pp. 115-130 ◽  
Author(s):  
Chang Hee Park ◽  
Cheol Ho Lee ◽  
Kyu Hong Han ◽  
Jin Ho Kim ◽  
Seung Eun Lee ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Steel Beams ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling
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