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Pre-tensioned concrete is a variant of prestressed concrete where the tendons are tensioned prior to the concrete being cast. [ 1 ] : 25 The concrete bonds to the tendons as it cures , following which the end-anchoring of the tendons is released, and the tendon tension forces are transferred to the concrete as compression by static friction .
Logo of Eurocode 2 An example of a concrete structure. In the Eurocode series of European standards (EN) related to construction, Eurocode 2: Design of concrete structures (abbreviated EN 1992 or, informally, EC 2) specifies technical rules for the design of concrete, reinforced concrete and prestressed concrete structures, using the limit state design philosophy.
Naturally precompressed exterior wall of Colosseum, Rome Cable-stayed prestressed concrete bridge over Yangtze river. In structural engineering, a prestressed structure is a load-bearing structure whose overall integrity, stability and security depend, primarily, on prestressing: the intentional creation of permanent stresses in the structure for the purpose of improving its performance under ...
Structural Modeling and Analysis. Cambridge University Press. ISBN 0-521-49536-9. Dugas, René (1988). A History of Mechanics. Courier Dover Publications. ISBN 0-486-65632-2. Hewson, Nigel R. (2003). Prestressed Concrete Bridges: Design and Construction. Thomas Telford. ISBN 0-7277-2774-5. Heyman, Jacques (1998). Structural Analysis: A ...
The effect is a structure of exceptional lightness that satisfies all three of Menn's main criteria for design: efficiency, economy, and aesthetics. [5] It is the longest viaduct of the A1 highway and the world's first single-cell box girder bridge built with the cantilever method, a pioneer work in prestressed concrete design and construction. [6]
A prestressed concrete design method in which the prestressing forces exerted upon the member act to balance a given proportion of the service loads that the member will be subjected to. [1]: 38 longitudinal prestressing Prestressing forces acting along the longitudinal axis of the member. low point See tendon low point.
It has now been replaced by the Structural Eurocodes for the design of steel and concrete structures. The standard specifies the requirements and the code of practice [ 1 ] [ 2 ] on design of steel , [ 1 ] concrete ( reinforced , prestressed or composite) [ 2 ] and composite bridges that use steel sections (rolled or fabricated, cased or ...
Komendant was an authority on techniques for greatly increasing the strength of concrete by prestressing it, making it possible to build structures that are more graceful than would be possible with ordinary concrete. The Olivetti-Underwood Factory consists of 72 prestressed concrete units locked together in an 8x9 grid. Each unit looks ...