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Numerical Analysis of Transmission Line Tower with Connection Beam on Pile Foundation
The transmission line (TL) towers are the backbone of a country’s energy supply. A TL tower with four legs is usually supported on a pile or group pile foundation particularly in weak soil. Heterogeneous and sloped soil profile cause torsional effect on the structure when subjected to heavy external loads due to wind, earthquakes, etc. The tower failures due to wide range of factors cause severe economic losses. The TL tower failures may be due to superstructure collapse during heavy wind, differential settlements, torsion failures due to instability of foundation, and pull-out failure of deep foundation during earthquakes and cyclones. Connection beams between the deep foundations under the tower legs provide additional shear resistance and torsional rigidity, thus improve the structural stability. In this study, the improved performance of TL tower with connection beam is numerically analysed. The connection beam, which contributes a coupled effect to the tower foundation, resists torsion on the tower which pronounced during earthquakes and heavy winds. Finite element analysis of the tower with connection beam on deep foundation is studied using ANSYS software. The numerical study of pile foundation with connection beams resulted an increase of 60% in the performance of the structure. The connection beam increases the area of contact of load distribution with soil thus improves the overturning effect of tower and efficiency of pile. Thus, the structural support provided by the connection beam contributes to the lateral resistance, torsional resistance and thus serviceability of TL tower.
Numerical Analysis of Transmission Line Tower with Connection Beam on Pile Foundation
The transmission line (TL) towers are the backbone of a country’s energy supply. A TL tower with four legs is usually supported on a pile or group pile foundation particularly in weak soil. Heterogeneous and sloped soil profile cause torsional effect on the structure when subjected to heavy external loads due to wind, earthquakes, etc. The tower failures due to wide range of factors cause severe economic losses. The TL tower failures may be due to superstructure collapse during heavy wind, differential settlements, torsion failures due to instability of foundation, and pull-out failure of deep foundation during earthquakes and cyclones. Connection beams between the deep foundations under the tower legs provide additional shear resistance and torsional rigidity, thus improve the structural stability. In this study, the improved performance of TL tower with connection beam is numerically analysed. The connection beam, which contributes a coupled effect to the tower foundation, resists torsion on the tower which pronounced during earthquakes and heavy winds. Finite element analysis of the tower with connection beam on deep foundation is studied using ANSYS software. The numerical study of pile foundation with connection beams resulted an increase of 60% in the performance of the structure. The connection beam increases the area of contact of load distribution with soil thus improves the overturning effect of tower and efficiency of pile. Thus, the structural support provided by the connection beam contributes to the lateral resistance, torsional resistance and thus serviceability of TL tower.
Numerical Analysis of Transmission Line Tower with Connection Beam on Pile Foundation
Lecture Notes in Civil Engineering
Hau, Kong Kian (editor) / Gupta, Ashok Kumar (editor) / Chaudhary, Sandeep (editor) / Gupta, Tanmay (editor) / Lakshmi, S. (author) / Philip, Pinky Merin (author)
Recent Advances in Structural Engineering and Construction Management ; Chapter: 31 ; 375-391
2022-09-28
17 pages
Article/Chapter (Book)
Electronic Resource
English
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