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Static, Dynamic and Buckling Analyses of a Power Transmission Tower under Wind Load  

Jung, Hyung-Jo (세종대학교 토목환경공학과)
Shin, Dong-Seung (한국유지관리)
Moon, Byoung-Wook (단국대학교 건축공학과 대학원)
Park, Ji-Hun (인천대학교 건축공학과)
Lee, Sung-Kyung (단국대학교 건축공학과)
Min, Kyung-Won (단국대학교 건축공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.19, no.4, 2006 , pp. 369-374 More about this Journal
Abstract
This paper describes dynamic characteristics of a power transmission tower consisting of lots of power lines and insulators. A numerical 3D modeling for the static, dynamic and buckling analyses of the power transmission tower is presented considering the case when the power lines are cut. Eigenvalue analysis indicates that the transmission tower shows different behavior comparing to usual structures governed by several low modes. The transmission tower is governed by lots of modes. It is verified that the transmission tower is structurally safe against the static wind and buckling loads. But the structural and buckling safety is not guaranteed when all power lines are cut, which comes to collapse the transmission tower. Further study is in need to overcome such case. Wind dynamic analysis shows that fluctuating wind loads increase the response of the tower.
Keywords
transmission tower; wind load; buckling stability; wind response characteristics;
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