Analytical and experimental studies on 400 and 132kV steel transmission poles

Rao, N. Prasad; Gopal, Ramesh; Rokade, R. P.; Mohan, S. J.

doi:10.1016/j.engfailanal.2010.12.014

Cited by 12 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specific parameter values are based on reference [38]. Some existing studies [39][40][41] assumed that the failure of TPs is not affected by adjacent poles and only considered the response of a single pole under wind load. However, the interaction between poles cannot be neglected because of the wire tension [42] in actual engineering.…”

Section: Finite Element Modelmentioning

confidence: 99%

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Liu

Wang

et al. 2023

Buildings

View full text Add to dashboard Cite

Generally, only wind effect is considered in the collapse evaluation of transmission poles (TPs). However, during a typhoon landing, the rainfall is usually very heavy and the influence of the wind and rainfall should be considered simultaneously. To estimate the bearing capacity of TPs accurately during a typhoon, this paper proposes a method for predicting the water content distribution of soil based on the deep learning method. Then, the earth pressure distribution related to the rainfall is obtained. Furthermore, according to the static balance principle, the ultimate overturning moment of the TPs is obtained, and the corresponding critical wind speed is determined via a numerical simulation. Finally, a case study is tested and the collapse evaluation of TPs under the combined effects of wind and rainfall is obtained. The results show that the critical wind speed when considering rainfall is less than the value when ignoring the rainfall effect. The traditional method overestimates the structural safety of the TPs because the rainfall has a significant reduction on the bearing capacity of TPs.

show abstract

Section: Finite Element Modelmentioning

confidence: 99%

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Liu

Wang

et al. 2023

Buildings

View full text Add to dashboard Cite

show abstract

“…An electrical pylon is a tower that functions to hold electrical transmission lines above the ground. In common practice, they are classified into two types of designs, which are monolithic steel tubes and latticed steel towers [ 1 , 2 ]. To construct a high-strength transmission tower with good structural integrity, the towers are divided into several components, such as the peak, boom, cage, tower body, and cross arm.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances of GFRP Composite Cross Arms in Energy Transmission Tower: A Short Review on Design Improvements and Mechanical Properties

et al. 2023

View full text Add to dashboard Cite

Currently, pultruded glass fibre-reinforced polymer (pGFRP) composites have been extensively applied as cross-arm structures in latticed transmission towers. These materials were chosen for their high strength-to-weight ratio and lightweight characteristics. Nevertheless, several researchers have discovered that several existing composite cross arms can decline in performance, which leads to composite failure due to creep, torsional movement, buckling, moisture, significant temperature change, and other environmental factors. This leads to the composite structure experiencing a reduced service life. To resolve this problem, several researchers have proposed to implement composite cross arms with sleeve installation, an addition of bracing systems, and the inclusion of pGFRP composite beams with the core structure in order to have a sustainable composite structure. The aforementioned improvements in these composite structures provide superior performance under mechanical duress by having better stiffness, superiority in flexural behaviour, enhanced energy absorption, and improved load-carrying capacity. Even though there is a deficiency in the previous literature on this matter, several established works on the enhancement of composite cross-arm structures and beams have been applied. Thus, this review articles delivers on a state-of-the-art review on the design improvement and mechanical properties of composite cross-arm structures in experimental and computational simulation approaches.

show abstract

“…ACSR conductors have better thermal properties than ACCR conductors. The calculation of the sag-tension of the conductor at different temperatures for various load cases of wind and ice is replicated [20].…”

Section: Introductionmentioning

confidence: 99%

Performance of Steel Monopole Transmission Line Supporting Structure in Various Wind Zones of India

B¹,

Kvgd²,

B³

et al. 2021

cea

View full text Add to dashboard Cite

The design of every new transmission line can address the solutions to fresh engineering problem. Therefore, the selection of the monopole structures in place of conventional lattice towers summarized the obligatory design parameters. The reliability climatic wind loads and the security longitudinal broken wire load combinations influence the internal parameter assessment of the steel pole structures. To assess them, a 60m high double circuit (DC) 220kV line with 305 m basic span is selected. All the Six wind zones (33, 39, 44, 47, 50, and 55 m/s) of India are selected to compute the transverse wind loads on the tower. Secondly broken wire security load in the longitudinal direction is adopted for the load combination for the monopole transmission tower design. With the above data, this paper presented the variation of the internal parameters in the wind zones. It is found that even though the basic wind speed from 33 m/s to 55 m/s is increased to 66.66%, top deflection is increased by 1.6%, a bending moment is enhanced by 6.3 % and shear force is increased by 12.6% only. The results show the change of wind speed has a little effect on the monopole tower. However, the variations of internal parameters in the wind zone are strongly depending on the Longitudinal loading only. The ASCE 48-19 steel monopole code is adopted to design the monopole since the Indian standard design code for monopole was not found. However, when comparing with the Indian Standard general Steel code IS 800-2007(Limit state) design guidelines, the Indian steel code contributes 10% more weight.

show abstract

Analytical and experimental studies on 400 and 132kV steel transmission poles

Cited by 12 publications

References 3 publications

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Recent Advances of GFRP Composite Cross Arms in Energy Transmission Tower: A Short Review on Design Improvements and Mechanical Properties

Performance of Steel Monopole Transmission Line Supporting Structure in Various Wind Zones of India

Contact Info

Product

Resources

About