Longitudinal Impact Loading of Transmission Towers

by Leon Kempner, Jr., Bonneville Power Administration, United States,
Wendelin H. Mueller, Bonneville Power Administration, United States,
Edward H. Bennett, Bonneville Power Administration, United States,

Document Type: Proceeding Paper

Part of: Steel Structures


A scale model has been developed to study a containment failure design concept for longitudinal (along the direction of the conductor) impact loading of electrical transmission structures. The stiffness and natural frequency of the scale model towers represent varying structure types. For comparison purposes the conductor scale model used both a beaded chain and stainless steel wire. A computer control release fuse was developed and extensive parameter studies were conducted to verify the scale model. Longitudinal impact loading data was collected from a broken conductor with subsequent tower failure. Scale model verification and preliminary test results are presented.

Subject Headings: Longitudinal loads | Impact loads | Power transmission | Power transmission towers | Cables | Steel structures | Failure loads | Computer models

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