External Versus Internal Bonded Prestressing


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Title: External Versus Internal Bonded Prestressing

Author(s): Eilhard WoelfelI

Publication: Special Publication

Volume: 120


Appears on pages(s): 425-436

Keywords: building codes; limit state design; prestressed concrete; prestressing; safety factor; serviceability; stress-strain relationships; structural design; unbonded prestressing; Structural Research

Date: 6/1/1990

In the near future, prestressed concrete structures will be designed in Europe according to Eurocode 2 (EC 2). The EC 2 principles governing the design of structures with bonded tendons and with external tendons are given in this paper, and a comparison is made between the structural behavior of the two different types of structures. It is shown that the reliability of both is comparable if the characteristic strain due to prestressing is introduced in the calculations.