On the probabilistic evaluation of the stability resistance of steel columns and beams

2009 ◽  
Vol 65 (3) ◽  
pp. 569-577 ◽  
Author(s):  
József Szalai ◽  
Ferenc Papp
Keyword(s):  
Steel Columns ◽  
Probabilistic Evaluation ◽  
The Stability

scholarly journals STUDY OF A STRUCTURE SUSPENDED FROM A SYSTEM OF STEEL COLUMNS AND TRUSSES (SYSTEM AND STABILITY)

2020 ◽  
Vol 9 (9) ◽  
pp. 43-54
Keyword(s):  
Reinforced Concrete ◽  
Lateral Force ◽  
Concrete Slabs ◽  
Structural Constraints ◽  
Steel Columns ◽  
Force Method ◽  
Reinforced Concrete Slabs ◽  
The Stability

Throughout history, men always wanted to build structures that are each more impressive than the next, while rising higher in the air. In this process, men were not satisfied with making sure that these structures were beautiful, impressive and majestic, but that they could also be very useful, that they fulfilled a function, and that they were able to resist the various structural constraints that will be imposed on it, or that could be imposed on it. With this in mind, we thought of creating a structure that could both inspire this side of wonder and structural beauty, while being useful and resistant to the loads imposed on it. In this work, we are going to talk about a building suspended to its foundation, in the sense that the building does not rest directly on the ground, but is suspended nearly eight meters from the ground by each of the three columns which support the said building by a system of trusses. The structure is made of steel with reinforced concrete slabs, which gives it a significant advantage in terms of weight. Another advantage is that it reacts quite well to earthquakes, showing only very small deflections using the equivalent lateral force method. In this work we will focus on the stability of the members of the system that carries the building and the stability of the building in general.

On the stability and strength of steel columns affected by distortional buckling

1998 ◽  
Vol 46 (1-3) ◽  
pp. 129-131 ◽  
Author(s):  
E Batista ◽  
D Camotim ◽  
L.C Prola ◽  
E Vazquez
Keyword(s):  
Distortional Buckling ◽  
Steel Columns ◽  
The Stability

scholarly journals Compression test of cold-formedsteel perforated profile with steel sheathing

Vestnik MGSU ◽  
2015 ◽  
pp. 43-52
Author(s):  
Aleksandr Yur’evich Shamanin
Keyword(s):  
Cross Sections ◽  
Oriented Strand Board ◽  
Axial Deformation ◽  
Plastic Properties ◽  
Steel Columns ◽  
Central Column ◽  
Series Of Experiments ◽  
The Stability ◽  
The Impact ◽  
Different Thickness

The subject of this paper is the stability and strength of cold-formed and perforated steel sigma-section columns with steel sheathing of different thickness. Ceilings with and without steel sheathing of different thickness are tested to failure in compression on a laboratory machine, which was based on a manual hydraulic jack. Series of 4 experiments with full-scale walls (2.5 m height) were carried out. Also, for examination of the role of boundary conditions, the sheet in a ceiling is either left free or connected to base with screws.In civil engineering there are many experiments and methodologies for calculating the strength and buckling of ceiling with the sheathing of various materials, such as oriented strand board and gypsum board. However, for producing superstructures of ships the materials with high plastic properties and strength characteristics are required. For example steel possesses such properties. It was the main reason for conducting a series of experiments and studying the behavior of cold-formed steel columns with steel sheathing. During the experiments the deformation of the cross-section of three equally spaced cross sections was determined, as well as the axial deformation of the central column in the ceiling with steel sheathing.The test results showed the influence of the thickness of sheathing and boundary condition of a sheet on the strength and buckling of ceiling. According to the results of the tests it is necessary to evaluate the impact of the sheathing made of different materials and if necessary to carry out further tests.

Effect of Residual Deformation of a Steel Column on its Fire Resistance under Combined Exposure "Explosion-Fire"

2019 ◽  
Vol 968 ◽  
pp. 288-293 ◽  
Author(s):  
Alexey Vasilchenko ◽  
Evgeny Doronin ◽  
Boris Ivanov ◽  
Vladimir Konoval
Keyword(s):  
Fire Resistance ◽  
Residual Deformation ◽  
Fire Retardant ◽  
Steel Structure ◽  
Steel Structures ◽  
Heating Time ◽  
Industrial Facilities ◽  
Steel Columns ◽  
Steel Column ◽  
The Stability

Calculations on the example of a steel column showed that with the combined effect of an explosion that causes deformation and subsequent fire, even without damaging the fire-retardant coat, there is a significant decrease in the fire resistance of the structure due to a decrease in the critical temperature. It is shown that, on the basis of the methodology proposed in this work, for hazardous operations industrial facilities, it is possible to predict the stability of steel columns in crash explosions followed by fire, as well as to recommend the values ​​of workloads and parameters of fire-retardant coats providing the necessary stability. It is also shown that when calculating the fire resistance limit of a steel structure with intumescent fire-retardant coat, it is necessary to take into account the proper heating time of steel structures until they lose strength.

Effect of Local Flange Damage on the Stability of Steel Columns

2013 ◽  
Vol 639-640 ◽  
pp. 778-781
Author(s):  
J. Fogarty ◽  
Sherif El-Tawil
Keyword(s):  
Carrying Capacity ◽  
Finite Element Models ◽  
Load Carrying Capacity ◽  
Steel Columns ◽  
Load Carrying ◽  
Severe Reduction ◽  
Damage Extent ◽  
Simulation Results ◽  
The Stability ◽  
Axial Resistance

The stability of steel columns that have suffered localized damage is investigated through analytical and computational means. An analytical model based on the Rayleigh-Ritz technique is used in conjunction with detailed finite element models to study the effect of damage extent and location on column load carrying capacity. Analytical and simulation results show a severe reduction in column axial resistance in the presence of localized flange loss.

The effect of prior flexural prestrain on the stability of structural steel columns

1981 ◽  
Vol 3 (2) ◽  
pp. 66-70 ◽  
Author(s):  
Milija N. Pavlović ◽  
Leonard K. Stevens
Keyword(s):  
Structural Steel ◽  
Steel Columns ◽  
The Stability

scholarly journals INFLUENCE OF RESIDUAL STRESS ON THE STABILITY OF STEEL COLUMNS AT ELEVATED TEMPERATURES

2017 ◽  
Vol 23 (2) ◽  
pp. 292-299 ◽  
Author(s):  
Ivar TALVIK ◽  
Andrei KERVALISHVILI
Keyword(s):  
Finite Element Method ◽  
Residual Stresses ◽  
Elevated Temperatures ◽  
Numerical Study ◽  
Potential Effect ◽  
Steel Columns ◽  
Linear Finite Element ◽  
Steel Grades ◽  
The Stability ◽  
In Fire

Influence of residual stresses on the stability of steel columns with various sections at elevated temperatures has been studied. The potential effect of residual stresses on the stability of columns should be clarified, as the stability of compression elements in fire even without explicitly regarding residual stresses is not a straightforward phenomenon. Extensive numerical study was performed utilizing non-linear finite element method. Results for models ignoring and accounting for residual stresses were compared for different steel grades, various slenderness values, temperatures and section types. Results were compared with Eurocode method.

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