scholarly journals STUDY ON ELASTIC SHEAR BUCKLING OF TRAPEZOIDAL CORRUGATED STEEL WEB

2018 ◽  
Vol 83 (750) ◽  
pp. 1193-1203
Author(s):  
Tao WANG ◽  
Kikuo IKARASHI
Keyword(s):  
Shear Buckling ◽  
Corrugated Steel Web ◽  
Elastic Shear

scholarly journals Study on Elastic Global Shear Buckling of Curved Girders with Corrugated Steel Webs: Theoretical Analysis and FE Modelling

2018 ◽  
Vol 8 (12) ◽  
pp. 2457 ◽  
Author(s):  
Kangjian Wang ◽  
Man Zhou ◽  
Mostafa Hassanein ◽  
Jitao Zhong ◽  
Hanshan Ding ◽  
...  
Keyword(s):  
Parametric Analysis ◽  
Trigonometric Function ◽  
Theoretical Formula ◽  
Radius Of Curvature ◽  
Buckling Strength ◽  
Shear Buckling ◽  
Curved Girders ◽  
Corrugated Steel Web ◽  
Orthotropic Shells ◽  
Elastic Shear

Despite the construction of several curved prestressed concrete girder bridges with corrugated steel webs (CSWs) around the world; their shear behavior has seldom been investigated. Accordingly, this paper substitutes the lack of available information on the global elastic shear buckling of a plane curved corrugated steel web (PCCSW) in a curved girder. This is based on the equilibrium equations and geometric equations in the elastic theory of classical shells, combined with the constitutive relation of orthotropic shells. Currently, the global elastic shear buckling process of the PCCSW in a curved girder is studied, for the first time in literature, with an equivalent orthotropic open circular cylindrical shell (OOCCS) model. The governing differential equation of global elastic shear buckling of the PCCSW, as well as its buckling strength, is derived by considering the orthotropic characteristics of a corrugated steel web, the rational trigonometric displacement modes, Galerkin’s method and variational principles. Additionally, the accuracy of the proposed theoretical formula is verified by comparison with finite element (FE) results. Moreover, the expressions of the inner or outer folded angle and radius of curvature are given by the cosine theorem of the trigonometric function and inverse trigonometric function. Subsequently, parametric analysis of the shear buckling behavior of the PCCSW is carried out by considering the cases where the radius of curvature is constant or variable. This parametric analysis highlights the effects of web dimensions, height-to-thickness ratio, aspect ratios of longitudinal and inclined panels, corrugation height, curvature radius and folded angles on the elastic shear buckling strength. As a result, this study provides a theoretical reference for the design and application of composite curved girders with CSWs.

Shear Resistance Study of Hybrid I-Beams Fabricated by HPS 485W and Q345 Steels

2011 ◽  
Vol 255-260 ◽  
pp. 1311-1314
Author(s):  
Lan Duan ◽  
Li Zheng ◽  
Chun Sheng Wang ◽  
Jing Yu Hu
Keyword(s):  
Shear Stress ◽  
High Performance ◽  
Shear Failure ◽  
Ultimate Load ◽  
Shear Resistance ◽  
Conventional Steel ◽  
Buckling Resistance ◽  
Shear Buckling ◽  
Post Buckling ◽  
Elastic Shear

This paper evaluates the shear resistance of hybrid I-beams fabricated by high performance steel and conventional steel. A number of hybrid I-beams are modeled and analyzed to determine their shear failure mechanism characteristics, considering parameters of web slenderness (hw/tw), frame action from end-stiffeners, ratio of flange width to web depth (bf/hw) and panel numbers. The analyses conclude that, in shear resistance calculation, plate beam with inter and slender webs often fail in inelastic or elastic shear buckling while ultimate shear resistance of compact webs is given by the shear strength of the material. What’s more, more rigid stiffeners provide more fixity to flange plates and increase the post-buckling resistance of plate beam. For plate beam with several panels, the shear stress at the ultimate load is similar. Finally, the I-beams with larger flange width to web depth ratio would develop larger shear strengths and then shear deformation cause formation of plastic hinges.

A Generalized Formula for Elastic Shear Buckling of Trapezoidal Corrugated Web Girder

2020 ◽  
Vol 24 (10) ◽  
pp. 2961-2970
Author(s):  
Hong-Guang Luo ◽  
Li-Ying Peng ◽  
Chan-Tao Zhang ◽  
Cheng-Xiu Cai
Keyword(s):  
Corrugated Web ◽  
Shear Buckling ◽  
Elastic Shear

Low-Frequency Sine Webs for Improved Shear Buckling Performance of Plate Girders

2019 ◽  
Author(s):  
Peter Y. Wang ◽  
Maria E. Garlock ◽  
Theodore P. Zoli ◽  
Spencer E. Quiel
Keyword(s):  
Fatigue Cracks ◽  
Low Frequency ◽  
Robotic Welding ◽  
Plate Girders ◽  
Material Efficiency ◽  
Corrugated Webs ◽  
Shear Buckling ◽  
Elastic Shear ◽  
Traditional Strategy ◽  
The Web

<p>Steel plate girders are used extensively in buildings and bridges. Given shear rarely governs, minimizing web thickness is desirable. However, web slenderness can enable shear buckling and fatigue problems. The traditional strategy is to use welded transverse stiffeners; yet transversely-stiffened girders are prone to fatigue cracks and difficult to fabricate at high slenderness ratios. Thus, AASHTO currently limits web slenderness to 150. Alternatively, corrugated web girders overcome these deficiencies but require robotic welding for the web-to-flange weld. Corrugated webs are also limited to small web thicknesses (6mm or less) and girder depths (less than 1.5m) given web forming limits. The authors propose an alternative web geometry, introducing low-frequency sinusoids (LFS) in the web along its length. The LFS web can be welded to the flanges using semi-automatic weld techniques currently employed by bridge fabricators. The reduced web curvature allows for a wider array of web forming techniques with much larger plate thicknesses. In a finite element study, web geometric properties such as sinusoidal frequency and amplitude are varied. Results demonstrate a significant increase in the elastic shear buckling load and ultimate strength using a wavelength equal to the depth of the girder. The results of this study show promise for improved girder durability paired with material efficiency, demonstrating that a web product with constant amplitude and wavelength could work for various girder depths up to 3m and above.</p>

Elastic Shear Bucking Parameter Analysis of Corrugated Web Steel Beam under High Temperature

2012 ◽  
Vol 557-559 ◽  
pp. 116-119
Author(s):  
Bing Liu ◽  
Yu Lai Han ◽  
Zhen Qing Wang
Keyword(s):  
High Temperature ◽  
Local Buckling ◽  
Parameter Analysis ◽  
Steel Beam ◽  
Obvious Effect ◽  
Corrugated Web ◽  
Shear Buckling ◽  
Corrugated Steel Web ◽  
Steel Property ◽  
Overall Buckling

Three kinds of shear buckling parameters of corrugated steel web beam under high temperature of fire in different time are analyzed and the high temperature effect on structural steel property is taken into account, the expressions of local buckling parameter, overall buckling parameter and interactive buckling parameter are proposed and their variation trends with the high temperature change are analyzed, a recommendation is proposed in order to provide more accurate predictions for the load-carrying capability status of corrugated steel web beam under high temperature, the buckling parameters variation should be unbiased estimated above all. Numerical results show that high temperature has obvious effect on the buckling parameter changes of the corrugated web steel beam.

scholarly journals Elastic shear buckling characteristics of LiteSteel beams

2010 ◽  
Vol 66 (11) ◽  
pp. 1309-1319 ◽  
Author(s):  
Poologanathan Keerthan ◽  
Mahen Mahendran
Keyword(s):  
Shear Buckling ◽  
Elastic Shear
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