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Modification of the simplified method of crack control included in EN 1992‐3
Author(s) -
Zych Mariusz
Publication year - 2016
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201500077
Subject(s) - bar (unit) , structural engineering , hardening (computing) , materials science , convergence (economics) , mathematics , engineering , composite material , geology , oceanography , layer (electronics) , economic growth , economics
The methods of crack control for liquid‐retaining RC tank walls are analysed taking into account external load (EN 1992‐1‐1) and imposed strain occurring at the construction stage (EN 1992‐3), i.e. during the concrete‐hardening period. The convergence ranges of the s implified method of crack control included in EN 1992‐3 and the detailed calculation methods included in EN 1992‐1‐1 and EN 1992‐3 are defined. Apart from the compatibility areas, overestimation of the acceptable reinforcing bar diameter φ s *, illustrated in Fig. 7.103N in EN 1992‐3, was proved. Coefficients k φ1 and k φ2 are defined, which enable the calculation of the acceptable reinforcing bar diameter φ s * in order to obtain the values complying with the direct calculations. For practical purposes, graphs have been plotted to facilitate the definition of coefficients k φ1 and k φ2 without performing direct calculations. On the basis of the analyses performed and the relations proposed, it can be concluded that there is a possibility or a necessity to increase or decrease the acceptable reinforcing bar diameter φ s * depending on the concrete mechanical properties and geometrical properties of an RC tank wall.