Publication

Amount of Prestressing Based on Serviceability Requirements

Olivier Burdet, Renaud Favre
1999
Conference Papers

Abstract

The paper proposes design criteria for the choice of the amount of prestressing. Based on an extension of the well known load balancing method, the proposed criteria permit a simple and effective design of the amount of prestressing at serviceability. The paper also discusses the favourable effect of compressive stresses induced by prestressing on cracking and water-tightness of PC structures. In situ measurements as well as extensive test results demonstrate that the proposed criteria lead to structures that are more durable and less prone to an increase in deflections and cracking over time.

Official source

https://infoscience.epfl.ch/entities/publication/77a9a660-9453-4026-88fb-87cd5a22100b

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Olivier Burdet, Renaud Favre
1999
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/77a9a660-9453-4026-88fb-87cd5a22100b

About this result

Related concepts (18)

Stress (mechanics)

In continuum mechanics, stress is a physical quantity that describes forces present during deformation. An object being pulled apart, such as a stretched elastic band, is subject to tensile stress and may undergo elongation. An object being pushed together, such as a crumpled sponge, is subject to compressive stress and may undergo shortening. The greater the force and the smaller the cross-sectional area of the body on which it acts, the greater the stress. Stress has units of force per area, such as newtons per square meter (N/m2) or pascal (Pa).

Compression (physics)

In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions. It is contrasted with tension or traction, the application of balanced outward ("pulling") forces; and with shearing forces, directed so as to displace layers of the material parallel to each other. The compressive strength of materials and structures is an important engineering consideration.

Residual stress

In materials science and solid mechanics, residual stresses are stresses that remain in a solid material after the original cause of the stresses has been removed. Residual stress may be desirable or undesirable. For example, laser peening imparts deep beneficial compressive residual stresses into metal components such as turbine engine fan blades, and it is used in toughened glass to allow for large, thin, crack- and scratch-resistant glass displays on smartphones.

Related publications (2)

Amount of Prestressing Based on Serviceability Requirements

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Microstructure, mechanical properties and residual stress of welded stainless-steel jackets for React & Wind conductor in EU-DEMO

Role of visco-elastic rheologies in the persistence of heterogeneous stress distributions in dynamic rupture models.