Control of long‐term deflection of concrete slabs by prestressing

Control of long‐term deflection of concrete slabs by prestressing

Solid slabs with drop panels or beams are idealized as horizontal grid of rigidly connected short prismatic members, subjected to gravity loads, and prestressing forces. Creep and shrinkage of concrete and relaxation of prestressing reinforcement are considered. The effect of transient loading induc...

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Veröffentlicht in:Structural concrete : journal of the FIB 2019-12, Vol.20 (6), p.1816-1827
Hauptverfasser: Gayed, Ramez B., Ghali, Amin
Format: Artikel
Sprache:eng
Schlagworte:
bridge deck
concrete floor
Concrete slabs
creep
Deflection
grid analysis
prestressed reinforcement
Prestressing
relaxation
Shrinkage
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Beschreibung
Zusammenfassung:Solid slabs with drop panels or beams are idealized as horizontal grid of rigidly connected short prismatic members, subjected to gravity loads, and prestressing forces. Creep and shrinkage of concrete and relaxation of prestressing reinforcement are considered. The effect of transient loading inducing cracking on long‐term deflection is accounted for. The analysis follows CEB‐FIP Model Code 2010.
ISSN:1464-4177
1751-7648
DOI:10.1002/suco.201800340