Français
3. Calculating cable post-tensioning
The prestressing force varies both :
in space, with the abscissa along the cable, due to friction ;
over time, due to concrete shrinkage and creep on the one hand, and steel relaxation on the other.
Voltage losses can be broken down into two categories:
instantaneous losses ;
deferred losses.
3.1 Voltage at origin
This is the force imposed on the reinforcement in front of an active anchor and the associated expansion device (trumpet or tromplaque), on the concrete side, at the moment of tensioning, before the force is transferred to the anchor (figure...
The Ultimate Scientific and Technical Reference
This article is included in
The superstructure of the building
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Calculating cable post-tensioning
Conclusion
Bibliography
Websites
-
PILES" engineering structures platform
-
BA-CORTEX – The calculation of concrete structures according to Eurocodes
...
Standards and norms
- AFNOR Eurocodes. Bases de calcul des structures. - NF EN 1990 AFNOR - 2003
- AFNOR Eurocodes. Bases de calcul des structures, amendement A1. - NF EN 1990/A1 - AFNOR 2006
- AFNOR Eurocodes. Bases de calcul des structures. Annexe nationale à la NF EN 1990 :2003. - NF EN 1990/AN AFNOR - 2011
- AFNOR Eurocodes. Bases de calcul des structures. Annexe nationale à la NF EN 1990/A1 :2006. - NF EN 1990/A1/AN AFNOR...
Directories
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Specialized companies
The Ultimate Scientific and Technical Reference
