Local Bearing Capacity of Steel Beams with Corrugated Webs

2018 ◽  
Vol 19 (1) ◽  
pp. 44-57 ◽  
Author(s):  
Xiaopeng Li ◽  
Zhe Zhang ◽  
Guoqiang Li
Keyword(s):  
Bearing Capacity ◽  
Steel Beams ◽  
Corrugated Webs

Bearing Capacity of Beams with Sinusoidal Corrugated Webs with Round and Square Holes

2019 ◽  
pp. 11-17
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Theoretical Calculations ◽  
Steel Structures ◽  
Steel Beams ◽  
Design Standards ◽  
Method Of Calculation ◽  
Corrugated Webs ◽  
The Stability ◽  
Full Scale Tests

Steel beams with sinusoidal corrugated webs are known since the middle of the last century. Their bearing capacity is widely studied, the design rules of these beams are included in the existing regulations, such as "Standards European Committee for Standardisation (CEN): DIN EN 1993:2007-02, Eurocode 3: Bemessung und Konstruktion von Stahlbauten - Teil 1-5: Aus Blechen zusammengesetzte Bauteile", SNiP RK 5.04-23-2002 "Steel Structures. Design Standards." and SP 16.13330.2017 "SNiP II-23-81* Steel Structures". However, there is still an open question about the bearing capacity of sinusoidal corrugated webs of beams with holes bordered with steel sleeves to ensure the stability of the wall. In this paper, a method for calculating beams with sinusoidal corrugated webs, weakened by round and square holes, which are bordered by pipes is proposed. To develop this method of calculation a numerical experiment was conducted. A number of finite element models of such beams with varying web thickness, beam length, diameter and hole location were created and analyzed using the finite element method. ABAQUS computer complex was used for calculations. The result of the research conducted is a technique that makes it possible to determine the bearing capacity of sinusoidal corrugated webs of beams with round and square holes, bordered by pipes. To confirm the theoretical calculations, full-scale tests were carried out.

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.

The Problem of Consideration Torsion Emergence in Beams

2018 ◽  
Vol 7 (3.2) ◽  
pp. 141 ◽  
Author(s):  
Sergiy Hudz ◽  
Grygorii Gasii ◽  
Volodymyr Pents
Keyword(s):  
Theoretical Model ◽  
Bearing Capacity ◽  
Work Conditions ◽  
Steel Beams ◽  
New Approach ◽  
Initial Imperfections ◽  
Advantages And Disadvantages ◽  
Internal Forces ◽  
Partially Restrained ◽  
Material Saving

The calculation of the steel unrestrained and partially restrained roof beams with initial imperfections main stages is discussed. Restraining can be done by structures attached to the steel beams, namely, profiled flooring and discrete joints. On the basis of the new approach to the internal forces analysis and the geometric properties specification, the purpose was to find and describe the differences in the beam work as the part of roofing, which distinguishes it from the work conditions of the free supported beam. The features of the beam operation with the joint flexural and torsion are singled out. The need to improve the existing theoretical model for present deficiencies elimination is indicated. The bearing capacity determining methods for the flexible elements stability exposed to bending and bending with torsion are compared. Their advantages and disadvantages are revealed. It is proposed to increase the material saving by applying calculations. At the end of the article, conclusions regarding the consideration of investigated factors are given.  

scholarly journals Transverse load carrying capacity of steel triangularly corrugated web beam with opening

2019 ◽  
Vol 279 ◽  
pp. 02004
Author(s):  
Sergey Kudryavtsev
Keyword(s):  
Carrying Capacity ◽  
Transverse Load ◽  
Steel Beams ◽  
Automatic Welding ◽  
Load Carrying Capacity ◽  
Element Analysis ◽  
Web Openings ◽  
Corrugated Webs ◽  
Load Carrying ◽  
Corrugated Web

The paper presents a study of the transverse bending behaviour of corrugated web beam with and without web openings. Examined steel beams consist of two flanges and a thin triangularly corrugated web, connected by automatic welding. In the literature, the influence of web opening over transverse load carrying capacity was dealt with mostly for steel beams with plane, sinusoidal and trapezoidal corrugated webs, so researches of beams with triangularly corrugated webs were found out to be very limited. A parametric study is carried out for various web 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. Models with and without web openings were analysed and examined in terms of load-deformation characteristics and ultimate web shear resistance. Recommendations are given for the practical design of corrugated web beams weakened by circular openings.

scholarly journals Strengthening the existing connection of steel beams with a column

2020 ◽  
Vol 313 ◽  
pp. 00032
Author(s):  
Przemysław Palacz ◽  
Izabela Major
Keyword(s):  
Bearing Capacity ◽  
Vertical Plane ◽  
Steel Beams ◽  
Safe Operation ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Allowable Stresses ◽  
Hot Rolled ◽  
Hot Rolled Steel ◽  
Made In

The paper presents a solution that includes strengthening the connection of a support column with beams from both sides, placed in a vertical plane together with the pole. All the bar elements connected in the analyzed node were made of hot-rolled steel I-sections. Due to the need to increase the load on the joined beams to the pole, load-bearing capacity of the primary connection is lost, which necessitates the reinforcement of the existing connection. The analysis carried out in this paper shown exceeding the allowable stresses in the column web at the place of joining the beams. The calculations made in this paper showed the possibilities of restoring the safe operation of the connection node in question, by introducing elements increasing its load-bearing capacity. In addition to analytical calculations, numerical analysis was also performed using the ADINA program.

scholarly journals Bending Behavior of Corroded H-Shaped Steel Beam in Underground Environment

2021 ◽  
Vol 11 (3) ◽  
pp. 938
Author(s):  
Jie Sheng ◽  
Junwu Xia ◽  
Hongfei Chang
Keyword(s):  
Corrosion Rate ◽  
Bearing Capacity ◽  
Bending Strength ◽  
Bending Test ◽  
Steel Beams ◽  
Steel Beam ◽  
Uniform Corrosion ◽  
Simple Method ◽  
Bending Performance ◽  
Sustained Loading

To investigate the residual bending strength of a corroded H-shaped steel beam in an underground coal mining environment, the law governing the degradation of the mechanical properties of corroded steel was first investigated through tensile testing. Subsequently, a four-point bending test was conducted on corroded H-shaped steel beams. The influence of the corrosion rate and sustained loading ratio on the residual bending performance of a corroded H-beam was investigated. The results reveal that the uniform corrosion and uneven corrosion of the steel occurred simultaneously. Additionally, pits with a small size appeared on the steel surface and the number of these pits increased with the corrosion time. Four different fracture modes were observed after the tensile test, and the yield strength and ultimate strength of the corroded steel decreased as the corrosion rate increased. In the bending test, the failure mode of the corroded H-shaped steel beam was not changed by the corrosion. The bearing capacity, stiffness, and ductility of the corroded H-shaped steel beams decreased with the increase in the corrosion rate, and the sustained loading further decreased the bearing capacity. Finally, a simple method for assessing the yield load and ultimate load of corroded H-shaped steel beams is proposed.

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