Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers

In this study, experimental and numerical investigations have been conducted of the mechanical behavior of existing full-scale wooden 123 KV 13L cross-arms used in transmission towers. Two cases have been considered to be analyzed and tested accordingly. In the case of normal condition, standard...

Full description

Saved in:

Bibliographic Details
Main Author:	Sharaf, Sharaf Hussein Kadhim
Format:	Thesis
Language:	English
Published:	2021
Subjects:	Electric lines Electric lines - Poles and towers - Design and construction Structural engineering Structural engineering
Online Access:	http://psasir.upm.edu.my/id/eprint/104011/1/SHARAF%20HUSSEIN%20KADHIM%20SHARAF%20-%20IR.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.104011
record_format	uketd_dc
spelling	my-upm-ir.1040112023-07-05T01:52:56Z Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers 2021-07 Sharaf, Sharaf Hussein Kadhim In this study, experimental and numerical investigations have been conducted of the mechanical behavior of existing full-scale wooden 123 KV 13L cross-arms used in transmission towers. Two cases have been considered to be analyzed and tested accordingly. In the case of normal condition, standard load 7.98 KN, with 8 organized steps with angle Θ = 54.2º at YZ plan from Y-axis were applied. While Fr = 16 KN with 16 organized steps with angle Θ = 12.6 º at the horizontal plane, α = 17.57 º at the vertical plane was applied for broken wire condition. The numerical results of the simulation have proven that the experiments were confident for normal and broken wire conditions are 93 % and 98.2 % respectively. To improve the existing design of cross-arm structure, an integrated TRIZ–Morphological Chart–ANP approach was used to establish four (4) new concepts of cross arms of transmission towers. In a conceptual design phase, a solution was developed through employing the TRIZ model according to TRIZ 40 techniques. After precise analysis, the output of the selection process of the conceptual design was further validated, where conceptual design 2 was ranked optimal in all three processing scenarios. Bracket structure P1048 by UNISTRUT® has been followed as a guide to be modified through conducting some modifications by employing systematic exploitation of proven ideas or experience. The modified design of the structure of the bracket was analyzed by FEM using static structural tool data from analyzing process were used to specify the thickness of the bracket structure to be used in the final design. Finally, the improved 13L 123KV Cross-arm structure has been investigated with experimental and numerical load-deflection behavior for the whole structure. Two scenarios have been conducted broken and normal wire conditions. the experimental results showed that the maximum value deflection at the normal condition for tangential and radial deflection is 11.6 mm and 11.5 mm respectively. Numerical results of simulation have proven that the experiments were confident for broken and normal wire conditions are 98.7 % and 91.4 % respectively. Electric lines Electric lines - Poles and towers - Design and construction Structural engineering Structural engineering 2021-07 Thesis http://psasir.upm.edu.my/id/eprint/104011/ http://psasir.upm.edu.my/id/eprint/104011/1/SHARAF%20HUSSEIN%20KADHIM%20SHARAF%20-%20IR.pdf text en public doctoral Universiti Putra Malaysia Electric lines Electric lines - Poles and towers - Design and construction Structural engineering Structural engineering Ishak, Mohamad Ridzwan
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Ishak, Mohamad Ridzwan
topic	Electric lines Electric lines - Poles and towers - Design and construction Structural engineering Structural engineering
spellingShingle	Electric lines Electric lines - Poles and towers - Design and construction Structural engineering Structural engineering Sharaf, Sharaf Hussein Kadhim Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers
description	In this study, experimental and numerical investigations have been conducted of the mechanical behavior of existing full-scale wooden 123 KV 13L cross-arms used in transmission towers. Two cases have been considered to be analyzed and tested accordingly. In the case of normal condition, standard load 7.98 KN, with 8 organized steps with angle Θ = 54.2º at YZ plan from Y-axis were applied. While Fr = 16 KN with 16 organized steps with angle Θ = 12.6 º at the horizontal plane, α = 17.57 º at the vertical plane was applied for broken wire condition. The numerical results of the simulation have proven that the experiments were confident for normal and broken wire conditions are 93 % and 98.2 % respectively. To improve the existing design of cross-arm structure, an integrated TRIZ–Morphological Chart–ANP approach was used to establish four (4) new concepts of cross arms of transmission towers. In a conceptual design phase, a solution was developed through employing the TRIZ model according to TRIZ 40 techniques. After precise analysis, the output of the selection process of the conceptual design was further validated, where conceptual design 2 was ranked optimal in all three processing scenarios. Bracket structure P1048 by UNISTRUT® has been followed as a guide to be modified through conducting some modifications by employing systematic exploitation of proven ideas or experience. The modified design of the structure of the bracket was analyzed by FEM using static structural tool data from analyzing process were used to specify the thickness of the bracket structure to be used in the final design. Finally, the improved 13L 123KV Cross-arm structure has been investigated with experimental and numerical load-deflection behavior for the whole structure. Two scenarios have been conducted broken and normal wire conditions. the experimental results showed that the maximum value deflection at the normal condition for tangential and radial deflection is 11.6 mm and 11.5 mm respectively. Numerical results of simulation have proven that the experiments were confident for broken and normal wire conditions are 98.7 % and 91.4 % respectively.
format	Thesis
qualification_level	Doctorate
author	Sharaf, Sharaf Hussein Kadhim
author_facet	Sharaf, Sharaf Hussein Kadhim
author_sort	Sharaf, Sharaf Hussein Kadhim
title	Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers
title_short	Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers
title_full	Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers
title_fullStr	Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers
title_full_unstemmed	Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers
title_sort	design and development of 123kv 13l cross-arm with bracing structures for application in transmission towers
granting_institution	Universiti Putra Malaysia
publishDate	2021
url	http://psasir.upm.edu.my/id/eprint/104011/1/SHARAF%20HUSSEIN%20KADHIM%20SHARAF%20-%20IR.pdf
_version_	1776100396128796672

Design and development of 123kV 13L Cross-arm with bracing structures for application in transmission towers

Similar Items