The Use of Post-Tensioned Anchorages on the Arch Portion of Stewart Mountain Dam, Arizona

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by Robert H. Bianchi, Bureau of Reclamation, Denver, United States,
Donald A. Bruce, Bureau of Reclamation, Denver, United States,

Document Type: Proceeding Paper

Part of: Geotechnical Practice in Dam Rehabilitation:

Abstract: Post-tensioned rock anchorages were selected by the Bureau of Reclamation (Reclamation) to stabilize Stewart Mountain Dam against potential seismic loadings. The use of such anchorages in a high, thin arch is thought to be unique. The paper addresses the design, construction and performance of the 62 anchorages installed through the arch section, highlighting special measures undertaken to reduce the risk of damage to the structure during the execution of the work.

Subject Headings: Arch dams | Anchorages | Tension | Mountains | Earthfill dams | Dam foundations | Bureau of Reclamation | Seismic loads | Foundation design | Arizona | North America | United States

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