Experimental and Numerical Studies on Shear Buckling Behavior of Corrugated Web Steel Girders with Cutouts

2020 ◽  
Vol 45 (5) ◽  
pp. 4321-4331
Author(s):  
Prathebha Padmanaban ◽  
Jane Helena Henderson
Keyword(s):  
Steel Girders ◽  
Numerical Studies ◽  
Buckling Behavior ◽  
Corrugated Web ◽  
Shear Buckling

Tragverhalten von Wellstegträgern mit kreisförmigen Öffnungskranz/Shear buckling of corrugated web beams with circular opening wall

Bauingenieur ◽  
2021 ◽  
Vol 96 (04) ◽  
pp. 114-120
Author(s):  
Zheng Li ◽  
Jörgen Robra
Keyword(s):  
Sich Eine ◽  
Circular Opening ◽  
Finite Elemente ◽  
Corrugated Web ◽  
Shear Buckling

Der Wellstegträger ist ein relativ neuartiges Bauteil mit einem breiten Anwendungsbereich im Stahlbau. Aufgrund des dünnen Stegs des Trägers ergibt sich eine signifikante Gewichtsreduzierung im Vergleich zu gewalzten oder geschweißten I-Profilen. Der Wellstegträger kann mit dünnerem Steg eine größere Steifigkeit aus der Ebene erzie- len, so dass das Beulen des Stegs durch die Wellung verhindert wird. Um eine Erhöhung der Gebäudehöhe zu vermeiden, können Öffnungen für Rohrleitungen in gewellten Stahlträgern eine kostengünstige Lösung darstellen. Dennoch reduzieren die Öffnungen im Wellsteg die Gesamtsteifigkeit und Tragfähigkeit des Trägers. Um das mechanische Verhalten von Wellstegträgern mit kreisförmigen Öffnungen und entsprechendem Öffnungskranz zu untersuchen, wurden drei Versuchskörper durch Bauteilversuche getestet. Die Finite-Elemente-Analyse wurde mit Abaqus durchgeführt. Die Simulationsergebnisse unter Berücksichtigung der geometrischen Imperfektion stimmen gut mit den Experimenten überein. Die Ergebnisse zeigen, dass der Öffnungskranz die Tragfähigkeit des Wellstegträgers mit Öffnungen wirksam verbessern kann. Anhand der Parameterstudie erhöht die Zunahme der Kranzdicke die Empfindlichkeit der geometrischen Imperfektion. Außerdem kann die Tragfähigkeit des Wellstegträgers mit kreisförmigen Öffnungskranz mit einem einfachen Rechenmodell für die Handrechnung auf der sicheren Seite liegend abgeschätzt werden.

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.

scholarly journals Design of Transverse Stiffeners in Plate Girders with Corrugated Web

2019 ◽  
Author(s):  
Witold Basiński
Keyword(s):  
Numerical Models ◽  
Experimental Investigations ◽  
Absolute Minimum ◽  
Plate Girders ◽  
Corrugated Web ◽  
Intermediate Stiffener ◽  
Shear Buckling ◽  
Geometry Parameter ◽  
The Web ◽  
Stiffness Criterion

This study reports investigations into the effect of relative flexural stiffness of intermediate stiffeners γ on the failure zone location in the corrugated web. The study also aimed at obtaining stiffness criterion for intermediate stiffeners that depends on the magnitude of the plate geometry parameter α. To achieve the goals of the study, experimental investigations were conducted into load displacement paths of four exemplary SIN girders. They were simply supported girders, made to full scale, and composed of pre-assembled units. The phenomena occurring in the experiment were represented using the Finite Element Method. For FEM numerical analysis of girders with intermediate stiffeners, models with the web height of 1000, 1250 and 1500 mm, made from 2; 2.5 and 3 mm thick corrugated sheet metal were used. Due to the analysis of 52 girder numerical models, it was possible to propose the stiffness criterion of intermediate stiffeners. The criterion was based on the assessment of shear buckling strength of the corrugated web. Using the regression method, dimensionless coefficients of the stiffener stiffness ks dependent on the optimum stiffness γ were determined. Based on estimated coefficients of the stiffener stiffness ks, the absolute minimum stiffness of intermediate stiffeners Ismin used in corrugated web plate girders was calculated. It was demonstrated that the use of an intermediate stiffener, the stiffness of which is greater than Ismin , additionally leads to a change in the location of the site of the web shear buckling.

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

Parametric Study on Buckling Behavior of Sinusoidal Corrugated Web Girder

2018 ◽  
Vol 18 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Geun-Woo Park ◽  
◽  
Seo-Haeng Lee ◽  
Jung-Han Yoo
Keyword(s):  
Parametric Study ◽  
Buckling Behavior ◽  
Corrugated Web

scholarly journals Neural network-based analytical model to predict the shear strength of steel girders with a trapezoidal corrugated web

2021 ◽  
Author(s):  
Miguel Abambres ◽  
He J
Keyword(s):  
Neural Network ◽  
Shear Strength ◽  
Analytical Model ◽  
Analytical Models ◽  
Steel Girders ◽  
Concentrated Load ◽  
Corrugated Web ◽  
Input Variables ◽  
Artificial Neural Network Ann ◽  
Relative Errors

<p>Corrugated webs are used to increase the shear stability of steel webs of beam-like members and to eliminate the need of transverse stiffeners. Previously developed formulas for predicting the shear strength of trapezoidal corrugated steel webs, along with the corresponding theory, are summarized. An artificial neural network (ANN)-based model is proposed to estimate the shear strength of steel girders with a trapezoidal corrugated web, and under a concentrated load. 210 test results from previous published research were collected into a database according to relevant test specimen parameters in order to feed the simulated ANNs. Seven (geometrical and material) parameters were identified as input variables and the ultimate shear stress at failure was considered the output variable. The proposed ANN-based analytical model yielded maximum and mean relative errors of 0.0% for the 210 points from the database. Moreover, still based on those points, it was illustrated that the ANN-based model clearly outperforms the other existing analytical models, which yield mean errors larger than 13%.</p>

scholarly journals Neural network-based analytical model to predict the shear strength of steel girders with a trapezoidal corrugated web

2018 ◽  
Author(s):  
Miguel Abambres ◽  
Jun He
Keyword(s):  
Neural Network ◽  
Shear Strength ◽  
Analytical Model ◽  
Analytical Models ◽  
Steel Girders ◽  
Concentrated Load ◽  
Corrugated Web ◽  
Input Variables ◽  
Artificial Neural Network Ann ◽  
Relative Errors

Corrugated webs are used to increase the shear stability of steel webs of beam-like members and to eliminate the need of transverse stiffeners. Previously developed formulas for predicting the shear strength of trapezoidal corrugated steel webs, along with the corresponding theory, are summarized. An artificial neural network (ANN)-based model is proposed to estimate the shear strength of steel girders with a trapezoidal corrugated web, and under a concentrated load. 210 test results from previous published research were collected into a database according to relevant test specimen parameters in order to feed the simulated ANNs. Seven (geometrical and material) parameters were identified as input variables and the ultimate shear stress at failure was considered the output variable. The proposed ANN-based analytical model yielded maximum and mean relative errors of 0.0% for the 210 points from the database. Moreover, still based on those points, it was illustrated that the ANN-based model clearly outperforms the other existing analytical models, which yield mean errors larger than 13%.

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

Numerical Studies on Buckling and Post-Buckling Behavior of Stiffened Curved Composite Panel with Repairs

2019 ◽  
Author(s):  
WARUNA SENEVIRATNE ◽  
VISHNU SASEENDRAN ◽  
SHENAL PERERA ◽  
BRANDON SAATHOFF ◽  
LAKSHAN RUBESINGHE ◽  
...  
Keyword(s):  
Composite Panel ◽  
Numerical Studies ◽  
Buckling Behavior ◽  
Post Buckling
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