The effect of (L/d) ratio in the strength of metallic elements under the central compression based on SKEN-1993-1-1

Session

Civil Engineering, Infrastructure and Environment

Description

Every element that is a part of a structure, depending to its lifetime it is a subject of external actions, whereby one of them is also a case of central compression. Besides central forces (axial), the comprising elements of structures or lonely elements might be loaded with non-central forces, with bending moment and with forces that acts normal in the longitudinal axes, so transversal forces.

Mainly in the group of elements that are under the effect of central compression are vertical elements such as columns, whereby the main duty of them is to transfer loads form the construction to the basement respectively in foundation and have much smaller cross section parameters, comparing with their length.

Besides elements on vertical position in this group can be involved also the elements as ones in slope positions, whereby in this case we have to deal with sway elements that has to sway structures mainly towards horizontal actions. In this paper of work we are going to present the basis analysis, treatment and dimensioning the vertical metallic elements based on the European Normative for projecting especially EN1990 and EN1993-1-1, the case when we have to deal with elements that work on central compression. As a practical case that is going to be considered in this study is the element which is fixed on both edges with hinges, so the first case of EULER, were it is going to be presented the effect of the ratio (L/D) in buckling resistance (Nb,Rd). In the end of this paper work is going to be presented an overview of the project, suggestions and conclusions.

Keywords:

Structure, steel, behavior, SKEN-1993-1-1, Circular Hollow Section

Session Chair

Liberato Ferrara

Session Co-Chair

Kubilay Akçaözoglu

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-437-54-7

Location

Durres, Albania

Start Date

28-10-2017 4:00 PM

End Date

28-10-2017 5:50 PM

DOI

10.33107/ubt-ic.2017.76

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Oct 28th, 4:00 PM Oct 28th, 5:50 PM

The effect of (L/d) ratio in the strength of metallic elements under the central compression based on SKEN-1993-1-1

Durres, Albania

Every element that is a part of a structure, depending to its lifetime it is a subject of external actions, whereby one of them is also a case of central compression. Besides central forces (axial), the comprising elements of structures or lonely elements might be loaded with non-central forces, with bending moment and with forces that acts normal in the longitudinal axes, so transversal forces.

Mainly in the group of elements that are under the effect of central compression are vertical elements such as columns, whereby the main duty of them is to transfer loads form the construction to the basement respectively in foundation and have much smaller cross section parameters, comparing with their length.

Besides elements on vertical position in this group can be involved also the elements as ones in slope positions, whereby in this case we have to deal with sway elements that has to sway structures mainly towards horizontal actions. In this paper of work we are going to present the basis analysis, treatment and dimensioning the vertical metallic elements based on the European Normative for projecting especially EN1990 and EN1993-1-1, the case when we have to deal with elements that work on central compression. As a practical case that is going to be considered in this study is the element which is fixed on both edges with hinges, so the first case of EULER, were it is going to be presented the effect of the ratio (L/D) in buckling resistance (Nb,Rd). In the end of this paper work is going to be presented an overview of the project, suggestions and conclusions.