Studies on failure of transmission line towers in testing

Rao, N. Prasad; Knight, G. M. Samuel; Mohan, S. J.; Lakshmanan, N.

doi:10.1016/j.engstruct.2011.10.017

Cited by 109 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with the complexity of the truss modelling method, the truss-beam method simplifies the modelling process on which current numerical research on behaviours of transmission tower structures are based [24,38,39]. Its accuracy has also been proven by comparing with the results from experimental testing [40][41][42][43].…”

Section: Modelling the Individual Members Of Steel Lattice Transmissimentioning

confidence: 99%

“…In order to avoid the buckling failure, the hip bracing retrofitting strategy can be used to provide additional supports for legs and bracing components, resulting in a significant strength enhancement [32,42]. Similarly, with added diaphragms, the deflections of cross-bracing can be significantly decreased and the torsional buckling phenomenon on the main legs switches to a flexural buckling failure mode [40].…”

Section: Failure Modes Of Reinforced Ltts Under Static Loadsmentioning

confidence: 99%

“…Specifically, the shell elements can predict and express the buckling phenomenon in the main tower legs. Recently, a series of studies have been undertaken to utilise a combined beam-column and shell element modelling technique to form a tower body to study its performance [32,42]. This modelling technique has a great time-saving feature and is able to accurately predict the potential failure in the main tower legs.…”

Section: Modelling the Individual Members Of Steel Lattice Transmissimentioning

confidence: 99%

See 2 more Smart Citations

Structural Analysis of Lattice Steel Transmission Towers: A Review

Chen¹,

Ou²

2016

J Steel Struct Constr

View full text Add to dashboard Cite

Lattice Transmission Towers (LTT) and the associated transmission line systems are important infrastructure in modern society. Due to the complicated load conditions and the nonlinear interaction among the large number of structural components, accurate structural analysis of the LTT systems has been a challenging topic for many years. Still today there are some gaps between research and industrial practice. This paper presents a summary of research outcomes from current literature. Recent developments in structural modelling and failure prediction technology are reviewed in terms of connection joints, individual members and structural systems subjected to static and dynamic loads. The advantages and disadvantages of different approaches have been compared. Finally, the knowledge gaps, associated challenges and possible research directions are highlighted.

show abstract

Section: Modelling the Individual Members Of Steel Lattice Transmissimentioning

confidence: 99%

Section: Failure Modes Of Reinforced Ltts Under Static Loadsmentioning

confidence: 99%

Section: Modelling the Individual Members Of Steel Lattice Transmissimentioning

confidence: 99%

See 1 more Smart Citation

Structural Analysis of Lattice Steel Transmission Towers: A Review

Chen¹,

Ou²

2016

J Steel Struct Constr

View full text Add to dashboard Cite

show abstract

“…Dynamic response of lattice steel supporting towers caused by cable rupture was investigated in [4]. Non-linear FEM analysis of failures of several transmission line supporting towers was carried out in [5]. Analytical evaluation of the dynamic response to buffeting and vortex induced vibrations and also exceptional loads like the failure of the conductor on a basis of case study of the transmission line was conducted by authors of [6].…”

Section: Introductionmentioning

confidence: 99%

Simulation of stochastic wind action on transmission power lines

Wielgos

Lipecki

Flaga

2018

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. The paper presents FEM analysis of the wind action on overhead transmission power lines. The wind action is based on a stochastic simulation of the wind field in several points of the structure and on the wind tunnel tests on aerodynamic coefficients of the single conductor consisting of three wires. In FEM calculations the section of the transmission power line composed of three spans is considered. Non-linear analysis with deadweight of the structure is performed first to obtain the deformed shape of conductors. Next, time-dependent wind forces are applied to respective points of conductors and non-linear dynamic analysis is carried out.

show abstract

“…For example, in September 2014 in Baja California Sur, Mexico, Hurricane Odile represents the largest damage in the history of the electrical network in Mexico, where it is estimated that 1,800 poles were affected [1]. Some of them may fail due to many reasons under wind actions such as incorrect design assumptions, improper detailing, material defects, fabrication errors, force fitting during erection and variation in material strength [2]. In addition, safety management such as regular checking of corrosion or damage during the operation conditions might be an additional source of collapses.…”

Section: Introductionmentioning

confidence: 99%

Tubular Steel Poles Under Lateral Load Patterns

Tapia-Hernández¹

2016

Volume 12 Number 4

View full text Add to dashboard Cite

Hurricane Odile hit Baja California Sur, Mexico in 2014, causing substantial damage to local steel pole structures (light poles and electricity poles). Based on the failure characteristics observed on such poles, this paper develops an analytical study aimed at evaluating the wind-excited inelastic response of slender vertical cantilever structures. Displacement-controlled pushover analyses are performed in OpenSees. The research pretends to establish a reference of the deformation limit for the serviceability limit state in order to contribute to make conservative decisions in the design phase of steel poles.

show abstract

Studies on failure of transmission line towers in testing

Cited by 109 publications

References 8 publications

Structural Analysis of Lattice Steel Transmission Towers: A Review

Structural Analysis of Lattice Steel Transmission Towers: A Review

Simulation of stochastic wind action on transmission power lines

Tubular Steel Poles Under Lateral Load Patterns

Contact Info

Product

Resources

About