Detail publikace

Shear at the Interface between Composite Parts of Prestressed Concrete Section

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"
}