Electrical Transmission and Substation Structures 2018
Seismic Effects on Transmission Lines and Their Major Components
Publication: Electrical Transmission and Substation Structures 2018: Dedicated to Strengthening our Critical Infrastructure
ABSTRACT
Transmission lines and their major components are critical infrastructure for electrical power transmission. The state-of-the-art for the design of transmission line structures is commonly governed by wind/ice combinations and broken wire loads. However, earthquake effects are not commonly considered in transmission line structural design, even in high risk seismic areas. This paper presents information from a CEATI project, 2017, to investigate the seismic performance of transmission line structures. A survey conducted as part of this project shows that the majority of utilities do not consider seismic loading and associated geotechnical hazards in the design of new or retrofitting existing transmission line structures. This paper reviewed numerous case histories regarding the seismic performance of transmission line structures that documented the primary source of damage to transmission lines as a result of geotechnical-related seismic hazards.
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ACKNOWLEDGEMENT
The authors would like to acknowledge the contribution to the CEATI project of the following individuals: Drs. A. W. Spang P.E., G.E., and T. Meskele P.E. (Geotechnical Resource Group), Dr. K. Yu P.E., S.E. and J. Newell P.E. (SEFT Consulting Group), and Dr. S. Dickenson P.E., G.E. (New Albion Geotechnical, Inc.). The authors would also like to show their appreciation to the CEATI project Utility sponsors: Altalink, American Transmission Company, Arizona Public Service Company, Avista Utilities, BC Hydro, Bonneville Power Administration, Central Hudson Gas & Electric, Con Edison Inc, Duke Energy, Electricity Supply Board, Entergy Services Inc., Exelon, FirstEnergy Service Company, Florida Power and Light Company, Hydro One Networks Inc., Hydro-Quebec, Manitoba Hydro, National Rural Electric Cooperative Association, New York Power Authority, Newfoundland and Labrador Hydro, San Diego Gas and Electric Company, SaskPower, Southern Electric Services, and Tohoku Electric Power.
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Published In
Electrical Transmission and Substation Structures 2018: Dedicated to Strengthening our Critical Infrastructure
Pages: 132 - 145
Editor: Michael Miller, SAE Towers
ISBN (Online): 978-0-7844-8183-7
Copyright
© 2018 American Society of Civil Engineers.
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Published online: Nov 1, 2018
Published in print: Nov 1, 2018
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