Article (Scientific journals)
Experimental and Numerical Investigations on Closely Spaced Built-Up Angle Members
Saufnay, Loris; Beyer, André; Jaspart, Jean-Pierre et al.
2023In Journal of Structural Engineering, 149 (4)
Peer reviewed
 

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Keywords :
Laboratory tests; Angle sections; Lattice towers; Built-up members
Abstract :
[en] This paper presents the results of 10 laboratory tests performed on closely spaced built-up members fabricated from hot-rolled angle sections. Such members are of special interest in the construction and reinforcement of steel lattice towers used for telecommunication or electrical transmission lines. The angle sections used in this study were star-battened with pinned support conditions. In particular, two configurations were studied: star-battened angles with equal sections (SBE) (composed of two chords with the same section), and star-battened angles with unequal sections (SBU) (composed of two chords with different sections). The influence of connection spacing along the members and different types of connections (fully preloaded bolts, partially preloaded bolts) were also studied. In addition, the important influence of geometric imperfections on failure load and failure mode were analyzed. In this paper, a numerical model is introduced after the laboratory tests are presented. The model was built in ANSYS version 18.2 and was validated based on the results obtained during the experimental campaign. The numerical results highlighted the sensitivity of failure modes to initial imperfections (out-of-straightness, load eccentricity). Last, the validated numerical model is thought to be used in a wider parametric study with the aim of developing new design recommendations.
Disciplines :
Civil engineering
Author, co-author :
Saufnay, Loris  ;  Université de Liège - ULiège > Département ArGEnCo > Adéquation des structures de génie civil aux exigences de fontionnement et de performances technico-économiques
Beyer, André;  Research Engineer, Steel Construction Division, Centre Technique Industriel de la Construction Métallique, Espace Technologique l’Orme des Merisiers—Bâtiment Apollo, Saint-Aubin 91190, France.
Jaspart, Jean-Pierre  ;  Université de Liège - ULiège > Département ArGEnCo > Adéquation des structures de génie civil aux exigences de fontionnement et de performances technico-économiques
Demonceau, Jean-François  ;  Université de Liège - ULiège > Département ArGEnCo
Language :
English
Title :
Experimental and Numerical Investigations on Closely Spaced Built-Up Angle Members
Publication date :
April 2023
Journal title :
Journal of Structural Engineering
ISSN :
0733-9445
eISSN :
1943-541X
Publisher :
American Society of Civil Engineers (ASCE)
Volume :
149
Issue :
4
Peer reviewed :
Peer reviewed
Name of the research project :
ANGELHY: Innovative solutions for design and strengthening of telecommunications and transmission lattice towers using large angles from high strength steel and hybrid techniques of angles with FRP strips
Funders :
RFCS - European Commission. Research Fund for Coal and Steel [BE]
Funding number :
753993
Available on ORBi :
since 24 January 2023

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