Shear buckling behavior of tapered bridge girders with steel corrugated webs

2014 ◽  
Vol 74 ◽  
pp. 157-169 ◽  
Author(s):  
M.F. Hassanein ◽  
O.F. Kharoob
Keyword(s):  
Bridge Girders ◽  
Buckling Behavior ◽  
Corrugated Webs ◽  
Shear Buckling

Interactive shear resistance of corrugated web in steel beam exposed to fire

2016 ◽  
Vol 7 (1) ◽  
pp. 69-78
Author(s):  
Mariusz Marcin Maslak ◽  
Marcin Lukacz
Keyword(s):  
Failure Modes ◽  
Steel Beams ◽  
Steel Beam ◽  
Safety Level ◽  
Design Algorithm ◽  
Content Type ◽  
Corrugated Webs ◽  
Buckling Resistance ◽  
Corrugated Web ◽  
Shear Buckling

Purpose The purpose of this paper is to present and discuss in detail the design approach to shear buckling resistance evaluation for corrugated web being a part of a steel beam exposed to fire. Design/methodology/approach It is based on the interaction between the local and global elastic instability failure modes as well as on the possible yielding of the whole web cross-section during fire. Findings New formulae, adequate for specification of the suitable shear buckling coefficients, depend not only on the web slenderness but also on the temperature of structural steel. Originality/value The methodology proposed by the authors can be added to the current European standard recommendations given in EN 1993-1-2 as a well-justified design algorithm helpful in reliable evaluation of a safety level for steel beams with slender corrugated webs subject to fire exposure. It seems to be highly desirable because, at present, there are no detailed instructions in this field.

Bridge Girders with Corrugated Webs

2000 ◽  
Vol 1696 (1) ◽  
pp. 162-170 ◽  
Author(s):  
Mohamed Elgaaly ◽  
Anand Seshadri ◽  
Roberto Rodriquez ◽  
Sherif Ibrahim
Keyword(s):  
Moment Capacity ◽  
Design Recommendations ◽  
Plate Girders ◽  
Analytical Results ◽  
Corrugated Webs ◽  
Shear Buckling ◽  
The Moment ◽  
The Cost ◽  
Web Plates ◽  
The Web

In plate girders, the use of corrugated webs permits the use of thin web plates without stiffeners, which reduces the cost of beam fabrication and improves fatigue life. Experimental and analytical studies on the behavior of girders with corrugated webs were conducted that have led to design recommendations. For girders with corrugated webs subjected to shear, it was noted from the experimental as well as the analytical results that failure of the web occurs because of local or global shear buckling, which depends on the corrugation configuration. For girders with corrugated webs subjected to uniform bending, the failure was due to yielding and vertical buckling of the compression flange into the web. The test and analytical results indicate that the web offered negligible contribution to the moment-carrying capacity of the beam, and the ultimate moment capacity may be calculated on the basis of the flange yielding, ignoring any contribution from the web. The behavior of girders with corrugated webs under in-plane compressive edge loads applied directly on the top flange was investigated, and design recommendations are made. Tests to examine the behavior of girders with corrugated webs under repeated loads are few. The results from the available tests are reported and compared with the results from test on conventionally stiffened girders with flat webs.

Interactive shear buckling behavior of trapezoidally corrugated steel webs

2008 ◽  
Vol 30 (6) ◽  
pp. 1659-1666 ◽  
Author(s):  
Jongwon Yi ◽  
Heungbae Gil ◽  
Kwangsoo Youm ◽  
Hakeun Lee
Keyword(s):  
Buckling Behavior ◽  
Shear Buckling

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>

scholarly journals A STUDY ON POST SHEAR BUCKLING BEHAVIOR IN CORRUGATED STEEL PLATE

2010 ◽  
Vol 75 (651) ◽  
pp. 1013-1020 ◽  
Author(s):  
Nobutaka SHIMIZU ◽  
Tadayoshi OKADA ◽  
Kikuo IKARASHI
Keyword(s):  
Steel Plate ◽  
Buckling Behavior ◽  
Shear Buckling

Behavior of bridge girders with corrugated webs: (II) Shear strength and design

2013 ◽  
Vol 57 ◽  
pp. 544-553 ◽  
Author(s):  
M.F. Hassanein ◽  
O.F. Kharoob
Keyword(s):  
Shear Strength ◽  
Bridge Girders ◽  
Corrugated Webs

scholarly journals Design method for the relocation of plastic hinges in prefabricated steel beams with corrugated webs

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246439
Author(s):  
Haotian Jiang ◽  
Chenhua Jin ◽  
Lei Yan ◽  
QN Li ◽  
Wei Lu
Keyword(s):  
Steel Plate ◽  
Design Method ◽  
Plastic Hinge ◽  
Steel Beams ◽  
Plastic Hinges ◽  
Corrugated Webs ◽  
Key Factor ◽  
Shear Buckling ◽  
Buckling Failure ◽  
And Behavior

The plastic hinge is a key factor in the ductile and plastic design of structures and an important basis for the seismic strengthening of structures. The formation and behavior of plastic hinges is critical for the seismic performance of an entire structure. The relocation of plastic hinges away from the beam end is an effective way of addressing brittle failure. In this paper, the cause of the shear buckling failure of prefabricated steel beams with corrugated webs and the strain variation at the flanges of steel beams are theoretically analyzed through structural tests. Based on the analysis results, a local strengthening method is proposed, and the effects of the beam sizes and the strengthening steel plate on the plastic hinges are obtained. In addition, a calculation method for determining the size of the strengthening steel plate that promotes the relocation of the plastic zone away from the beam end is given, a design method for plastic hinge relocation is proposed based on the test data, and its validity is verified.

scholarly journals Buckling behavior of steel column with triangularly corrugated web

2019 ◽  
Vol 279 ◽  
pp. 02007
Author(s):  
Sergey Kudryavtsev
Keyword(s):  
General Purpose ◽  
Reduction Factor ◽  
Automatic Welding ◽  
Lateral Buckling ◽  
Element Analysis ◽  
Steel Columns ◽  
Buckling Behavior ◽  
Corrugated Webs ◽  
Corrugated Web ◽  
Building Practice

The paper presents a study of behaviour of axially loaded columns that consist of two flanges and a thin triangularly corrugated web, connected by automatic welding. In the literature, the buckling behaviour of steel columns was dealt with mostly for members with plate webs. Researches of that problem for columns with corrugated webs were found out to be very limited. A parametric study is carried out for various column slenderness and corrugation densities. A general-purpose finite element analysis software ABAQUS was used. The corrugation densities adopted in this study represent practical geometries, which are commonly used for such structures in building practice. Plot showing the influence of section slenderness on value of reduction factor for lateral buckling is presented. It is determined that existing buckling curves poorly describe the dependence of the reduction factor on slenderness for axially compressed members with triangularly corrugated webs. Finally, recommendations were proposed for the design of pin-ended columns with corrugated webs at lateral buckling in accordance with numerical results.

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