Title: CPN 29 - Prestressed Concrete Anchorage Zones

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Publication: CIA

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Date: 2/7/2011

Abstract:
In a post-tensioned system, the anchorage component is usually an external steel bearing plate or an embedded steel casting, with suitable lock-off device which transfers prestressing force to the concrete by direct bearing. In a pre-tensioned system, the transfer of these forces is by bond along individual cables at their ends. It is in this highly stressed zone of concrete imme-diately behind the anchorage, called the anchorage zone, that a complex three-dimensional interaction of stresses occurs as the load is transformed to a two-dimensional direct stress at some distance remote from the anchorage.