Wavy Corrugated Web Stiffness Influence on Plate Girders Flange Local Stability

2013 ◽  
pp. 205-210
Author(s):  
Krzysztof Ryszard Kuchta
Keyword(s):  
Local Stability ◽  
Plate Girders ◽  
Corrugated Web

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.

scholarly journals Torsional and Warping Constants of I-shaped Plate Girders with a Sine Corrugated Web

2012 ◽  
Vol 32 (6A) ◽  
pp. 347-354 ◽  
Author(s):  
Seungjun Kim ◽  
Jin Su Jeon ◽  
Deok Hee Won ◽  
Young Jong Kang
Keyword(s):  
Plate Girders ◽  
Corrugated Web

Fatigue of Corrugated-Web Plate Girders: Experimental Study

2006 ◽  
Vol 132 (9) ◽  
pp. 1371-1380 ◽  
Author(s):  
Sherif A. Ibrahim ◽  
Wael W. El-Dakhakhni ◽  
Mohamed Elgaaly
Keyword(s):  
Experimental Study ◽  
Plate Girders ◽  
Corrugated Web

scholarly journals Shear Buckling of Plate Girders with Corrugated Web Restrained by End Stiffeners

2018 ◽  
Author(s):  
Witold Basiński
Keyword(s):  
Failure Modes ◽  
Numerical Models ◽  
Fem Analysis ◽  
Sine Wave ◽  
Experimental Investigations ◽  
Plate Girders ◽  
Buckling Resistance ◽  
Corrugated Web ◽  
Shear Buckling ◽  
Interactive Buckling

The study reports the investigations into the effect produced by flexural stiffness of end stiffeners on the design buckling resistance of the sine wave webs of girders. Experimental investigations were concerned with load displacement paths in sinusoidally corrugated web girders, composed of structural items and made to the full scale . The phenomena occurring in experimental investigations were represented using the Finite Element Method. In numerical models based on FEM analysis, the same failure modes of webs that were found in experimental investigations into corrugated web girders were accounted for. FEM numerical analysis was performed for girder models with webs 500, 1000, 1250 and 1500 mm in height, made of corrugated sheet metal 2, 2.5 and 3 mm in thickness. On the basis of laboratory tests and FEM analysis, a new method for estimating design shear buckling resistance for girders with semirigid and rigid end stiffeners was proposed. The method relies on the determination of interactive buckling resistance. The solution presented in this study was compared with formulas currently used for buckling resistance estimation. It was shown that the use of girder rigid end stiffeners produces in increase in shear buckling resistance up to 11%. Conclusions were drawn and recommendations were made with respect to the sizing of sine wave corrugated web girders with semirigid and rigid end stiffeners.

Fatigue of Corrugated-Web Plate Girders: Analytical Study

2006 ◽  
Vol 132 (9) ◽  
pp. 1381-1392 ◽  
Author(s):  
Sherif A. Ibrahim ◽  
Wael W. El-Dakhakhni ◽  
Mohamed Elgaaly
Keyword(s):  
Analytical Study ◽  
Plate Girders ◽  
Corrugated Web

scholarly journals PLATE GIRDERS WITH CORRUGATED WEBS

2010 ◽  
Vol 16 (2) ◽  
pp. 166-171 ◽  
Author(s):  
Hartmut Pasternak ◽  
Gabriel Kubieniec
Keyword(s):  
Steel Buildings ◽  
Lateral Torsional Buckling ◽  
Plate Girders ◽  
Corrugated Webs ◽  
Buckling Resistance ◽  
Corrugated Web ◽  
Beam Type ◽  
Buckling Failure ◽  
Patch Loading ◽  
Hot Rolled

Especially for the main frames of single‐storey steel buildings the use of corrugated web beams, mainly with sinusoidal corrugation, has been increased very much during the last years. Due to the thin web of 1,5 mm to 3 mm corrugated web beams afford a significant weight reduction compared with hot rolled profiles or welded I‐sections. Buckling failure of the web is prevented by the corrugation. The buckling resistance of presently used sinusoidal corrugated webs is comparable with plane webs of 12 mm thickness or more. Due to improvements of the automatic fabrication process corrugated webs up to 6 mm thickness became possible. Therefore the field of application of this beam type has been extended considerable. Even short span bridges are possible now. The dimensioning of corrugated web beams is ruled by the EN 1993–1‐5 Annex D ‐ it covers only web thicknesses up to 3 mm. In the last years many tests and finite element simulations have been carried out. Regarding this background, these EN rules will be discussed and extended. Furthermore, additional proposals for patch loading and lateral‐torsional buckling of girders with sinussoidal webs will be given. Santrauka Pastaruoju metu ypač vienaukščiu pastatu plieniniams remams imtos plačiai naudoti sijos su pagal sinusoide banguota sienele. Del plonu 1,5–3,0 mm storio gofruotuju siju sieneliu ju mase gerokai sumažeja, palyginti su karštai valcuotomis arba virintinemis dvitejo skerspjūvio sijomis. Sijos sieneles klumpamosios irties išvengiama del sieneles bangavimo. Šiuo metu naudojamu pagal sinusoide subanguotu sieneliu klumpamoji galia yra lygintina su 12 mm arba didesnio storio plokščiu sieneliu galia. Patobulinus automatini gaminimo procesa gofruotaja sienele galima padaryti iki 6 mm storio. Todel labai išsiplečia šiu siju naudojimo sritys. Sijos gali būti naudojamos nedidelio tarpatramio tiltams. Banguotasieniu siju projek‐tavimo metodika aprašyta EN 1993–1‐5 D priede, tačiau ji galioja tik sijoms, kuriu sieneles storis neviršija 3 mm. Pastarai‐siais metais atlikta daug bandymu ir skaitiniu eksperimentu baigtiniu elementu metodu. Todel šios EN projektavimo nuostatos bus aptariamos ir išplestos. Be to, straipsnyje pateiktos papildomos rekomendacijos, kaip vertinti siju su pagal sinusoide banguota sienele uždetaja apkrova ir lenkiamaji sukamaji klupuma.

scholarly journals Experimental Investigation of Impact Concrete Slab on the Bending Behavior of Composite Bridge Girders with Sinusoidal Steel Web

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 273 ◽  
Author(s):  
Marcin Górecki ◽  
Krzysztof Śledziewski
Keyword(s):  
Steel Plate ◽  
Concrete Slab ◽  
Bending Moment ◽  
Bridge Girders ◽  
Steel Beams ◽  
Reinforced Concrete Slab ◽  
Plate Girders ◽  
Common Solution ◽  
Industrial Buildings ◽  
Corrugated Web

Until recently, steel plate girders with corrugated steel members were used primarily as poles and girders in the construction of industrial buildings. Currently, they are also being used in the construction of bridges. Compared to traditional steel and rolled girders, steel plate girders weigh less and are more stiff, while also having a neater appearance. In this paper, the results of an experimental study are present. The aim of the study was to determine the behavior of a bridge girder with sinusoidal web geometry when subjected to a bending moment. The study was focused on a composite steel and concrete structure with pin connections, which is currently the most common solution. Three near-real scale beams were subjected to bending tests. The study found that composite corrugated-web steel beams and non-composite corrugated-web steel beams showed similar forms of failure. A reinforced concrete slab did not prevent web stress concentration at the point of connection with the flange. Furthermore, the study indicates that corrugated steel webs in bridge girders can have a much smaller thickness (less than 8 mm) compared with the traditional solution.

Optimal parameter area for steel corrugated web beams

2020 ◽  
Vol 0 (7) ◽  
pp. 45-56
Author(s):  
Lyudmila Lavrinenko ◽  
Danylo Oliinyk
Keyword(s):  
Optimal Parameter ◽  
Corrugated Web

Numerical Analysis of the Age-Sex-Structured Population Dynamics Taking into Account Spatial Diffusion

2005 ◽  
Vol 10 (4) ◽  
pp. 365-381 ◽  
Author(s):  
Š. Repšys ◽  
V. Skakauskas
Keyword(s):  
Population Dynamics ◽  
Numerical Analysis ◽  
Population Model ◽  
Local Stability ◽  
Deterministic Model ◽  
Random Mating ◽  
Spatial Diffusion ◽  
Neumann Problems ◽  
Structured Population ◽  
Structured Population Dynamics

We present results of the numerical investigation of the homogenous Dirichlet and Neumann problems to an age-sex-structured population dynamics deterministic model taking into account random mating, female’s pregnancy, and spatial diffusion. We prove the existence of separable solutions to the non-dispersing population model and, by using the numerical experiment, corroborate their local stability.

Mathematical views of the fractional Chua's electrical circuit described by the Caputo-Liouville derivative

2021 ◽  
Vol 67 (1 Jan-Feb) ◽  
pp. 91
Author(s):  
N. Sene
Keyword(s):  
Caputo Derivative ◽  
Local Stability ◽  
Numerical Scheme ◽  
Equilibrium Points ◽  
Electrical Circuit ◽  
Maximal Lyapunov Exponent ◽  
Electrical Circuits ◽  
Adaptive Controls ◽  
Liouville Derivative

This paper revisits Chua's electrical circuit in the context of the Caputo derivative. We introduce the Caputo derivative into the modeling of the electrical circuit. The solutions of the new model are proposed using numerical discretizations. The discretizations use the numerical scheme of the Riemann-Liouville integral. We have determined the equilibrium points and study their local stability. The existence of the chaotic behaviors with the used fractional-order has been characterized by the determination of the maximal Lyapunov exponent value. The variations of the parameters of the model into the Chua's electrical circuit have been quantified using the bifurcation concept. We also propose adaptive controls under which the master and the slave fractional Chua's electrical circuits go in the same way. The graphical representations have supported all the main results of the paper.

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