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NAVRÁTIL, J. ZVOLÁNEK, L.
Originální název
Shear at the Interface between Composite Parts of Prestressed Concrete Section
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
Composite concrete beams made of prefabricated prestressed or non-prestressed element and cast-in-place reinforced concrete slab became very popular in present-day civil engineering practice. Two concrete composite parts of beam are cast at different times. Different moduli of elasticity, consecutive load application, and differential creep and shrinkage cause unequal strains and stresses in two adjacent fibers of construction joint. The requirement is to ensure that both parts act fully compositely, because the bending and shear designs of composite members are based on this assumption. Therefore the level of shear stresses at the interface between two parts must be limited. The objective of the paper is to review the methods for the calculation of shear stresses in construction joint, and to evaluate the influence of different age of two concrete composite parts on the level of shear stresses. Calculation method alternative to Eurocode 2 method is proposed and tested. It is recommended to calculate the shear stress from difference of normal forces acting on sectional components in two neighboring sections of the element. It was observed that differential shrinkage of concrete components can significantly affect the stress distribution. Numerical studies were performed based on real-life examples of composite beams.
Klíčová slova
composite concrete beams; Eurocode; design; construction joint; shear; creep; shrinkage; stress redistribution
Autoři
NAVRÁTIL, J.; ZVOLÁNEK, L.
Rok RIV
2014
Vydáno
20. 12. 2014
Nakladatel
Trans Tech Publications
Místo
Switzerland
ISBN
978-3-03835-442-0
Kniha
Advanced Engineering and Technology
Edice
softcover, 2-part-set
Číslo edice
1
ISSN
1660-9336
Periodikum
Applied Mechanics and Materials
Ročník
752-753
Číslo
449
Stát
Švýcarská konfederace
Strany od
763
Strany do
768
Strany počet
6
BibTex
@inproceedings{BUT109680, author="Jaroslav {Navrátil} and Lukáš {Zvolánek}", title="Shear at the Interface between Composite Parts of Prestressed Concrete Section", booktitle="Advanced Engineering and Technology", year="2014", series="softcover, 2-part-set", journal="Applied Mechanics and Materials", volume="752-753", number="449", pages="763--768", publisher="Trans Tech Publications", address="Switzerland", doi="10.4028/www.scientific.net/AMM.752-753.763", isbn="978-3-03835-442-0", issn="1660-9336" }