Blast Limits for Transmission Structures. I: Response Spectra Development
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Volume 24, Issue 1
Abstract
To develop a defense strategy to protect power transmission lines against blast-induced ground motions, an understanding of the dynamic responses of these structures must be first established. This paper presents the results from ground motion monitoring at two blast sites in southern United States. These studies are being conducted as part of a research effort to establish strong ground motion characteristics necessary for developing blast limits for power transmission systems. Ground movements caused by the surface mining blast and quarry blasting were recorded using geophones and wireless triaxial sensing units. The process of establishing the ground motion response spectra via analyzing actual ground motion measurements, including noise filtration and signal processing, is then described. These ground motion response spectra are the necessary inputs for spectrum analysis of structural responses that can be used to establish ground vibration limits.
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Acknowledgments
The writers acknowledge the support of Southern Company: Southern Company Transmission System Design Committee, Mr. Charles Munden, and Mr. Dennis Mize. Special appreciation is extended to Mr. Colby Galloway, Mr. Luke Stafford, Mr. Eddie Sheffield of Southern Company, Mr. Bill Kitchens of the Alabama Department of Surface Mines, and Mr. Mac Sauls and Randall Franklin of the SAULS Seismograph group.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 24 • Issue 1 • February 2010
Pages: 53 - 60
Copyright
© 2010 ASCE.
History
Received: Aug 13, 2008
Accepted: Mar 16, 2009
Published online: Oct 8, 2009
Published in print: Feb 2010
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