Design recommendations for the stability of transmission steel lattice towers

Bezas, Marios‐Zois; Jaspart, Jean‐Pierre; Vayas, Ioannis; Demonceau, Jean‐François

doi:10.1016/j.engstruct.2021.113603

Cited by 15 publications

(6 citation statements)

References 10 publications

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“…For the project ANGELHY, the results coming from the linear elastic global analyses of the Danube tower are compared to the results obtained from a nonlinear analysis of the same tower. A main conclusion from the comparison study consists in the discovery of an instability mode, called "segment instability" (Figure 9), occurring in the full nonlinear analysis, considering an elastic-perfectly plastic material, distributions of residual stresses and an initial imperfection of the structure in accordance with the 1st instability mode [4].…”

Section: Results Of the Linear Elastic Global Designmentioning

confidence: 98%

“…The non-linear design of the tower is presented in [4]. A critical assessment of the standards allowed the detection of major lacks in the verification procedures.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 9 Segment failure. Source: [4] This failure mode is currently not covered by any design standard for steel lattice towers. The failure mode will be further clarified and, if required, proposals for amendment of these codes will prepared within the ANGELHY RFCS project so to fill this gap.…”

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confidence: 99%

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The design of a steel lattice transmission tower in Central Europe

Tibolt¹,

Bezas

Vayas

et al. 2021

ce papers

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The current paper resumes the design of a steel lattice transmission tower carried out in the framework of the RFCS‐funded research project ANGELHY. The scope of ANGELHY is the establishment of analysis methods for lattice towers and the development of design rules for steel and hybrid angle sections, as well as built‐up members composed of angles. In Europe, the design of transmission towers for overhead electrical lines can be carried out according to EN 1993‐3‐1: 2006 or for electrical lines exceeding 1 kV according to EN 50341‐1: 2012. Both standards prescribe linear elastic global analyses for the design of steel lattice towers. In the current paper, the linear elastic design of the suspension transmission tower according to the German National Annex of EN 50341‐1:2012 is presented. In a first step, common typologies of lattice transmission towers used in Europe are described. In a second step, the chosen tower typology is explained in detail. The Danube tower represents the widest spread tower typology in Europe. Finally, the detailed design procedure of the tower according to EN 50341‐1:2012 is presented. The design is carried out with the software TOWER – Version 15.0 from Power Line Systems.

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Section: Results Of the Linear Elastic Global Designmentioning

confidence: 98%

“…The non-linear design of the tower is presented in [4]. A critical assessment of the standards allowed the detection of major lacks in the verification procedures.…”

Section: Introductionmentioning

confidence: 99%

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The design of a steel lattice transmission tower in Central Europe

Tibolt¹,

Bezas

Vayas

et al. 2021

ce papers

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“…For information, further investigations achieved in the ANGELHY project have led to the proposal of a new consistent set of design formulae for cross-section classification and member stability; more details may be found in [14][15][16].…”

Section: Discussionmentioning

confidence: 99%

Compression tests on large angle columns in high‐strength steel

et al. 2022

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The paper addresses the instability of large angle columns in high-strength steel subjected to compression loads. It presents a number of compression tests on such columns with different eccentricities and slenderness and the resulting different buckling failure modes observed. The experimental campaign is intended to widen our understanding of the behaviour of highstrength steel columns with large angle sections in compression and bending and so to complement previous experimental studies. The tests were accompanied by numerical analyses and calculations of the load carrying capacities based on current Eurocode 3 design recommendations. The numerical simulations were conducted using the FEM software FINELG, which takes into account the influence of geometrical and material non-linearities. The numerical and analytical results are compared with the corresponding experimental ones. The experimental campaign and the numerical simulations were conducted as part of the ANGELHY project funded by the European Commission's Research Fund for Coal and Steel (RFCS).

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“…Due to the heterogeneity, anisotropy, brittle nature, high-stress concentration, and nonlinear behaviour of GFRP, the current steel conventional equation cannot be used to predict net-tension failure. To account for these elements, the traditional equation needs to be adjusted [40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Crushing performance of pultruded GFRP angle section with various connections and joints on lattice towers

Ravikumar¹,

Palanichamy²,

Singaram³

et al. 2023

Matéria (Rio J.)

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The significant features of the GFRP angle make it one of the modern construction members for the present lattice-type Transmission Line Towers (TLT) made out of mild steel. The GFRP structural angle members with gusset plate connections for net-crushing strength are investigated in this study, with an emphasis on connections to transmission line towers. Forty-two specimens of single-lap, butt joints with bolted connections are considered in this study. The gusset plate and edge distance have different widths. The joint is subjected to a compression load before failure modes and the associated loads were noticed. An experimental investigation on the crushing behaviour of GFRP angle sections to determine the crushing performance against the standard crushing force of different connections such as bolted, adhesive, and hybrid (bolted + adhesive) with various joints (butt and lap) has been carried out and are presented. Additionally, the impact of plate edge distance and width on connection effectiveness is investigated. The innovation of the work is in the evaluation of the crushing value for bolted GFRP structural angle members of 2, 3, and 4 nos with gusset plate connections that have been used to predict the compressive strength.

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Design recommendations for the stability of transmission steel lattice towers

Cited by 15 publications

References 10 publications

The design of a steel lattice transmission tower in Central Europe

The design of a steel lattice transmission tower in Central Europe

Compression tests on large angle columns in high‐strength steel

Crushing performance of pultruded GFRP angle section with various connections and joints on lattice towers

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