The methods of analyses of load bearing capacity of reinforced concrete columns with considering the creep of concrete

Vol. 542 (10) 2017 / czwartek, 25 października, 2018

(InPolish)

K. Klempka,
P. Korzeniowski,

DOI: 10.15199/33.2017.10.10

Volume 542: Issue 10
Pages 32-34
Accepted for publication: 10.08.2017 r.

According to Eurocode 2 load bearing capacity of reinforced concrete columns can be calculated using the simplified methods taking into account second-order effects, or using the general method. In these calculations, the impact of long-term loads and, thus, creep of concrete, is important. The impact of rheological phenomena is considered to be the least known. Therefore, it was decided to consider the problem of bearing capacity of reinforced concrete columns mainly in the aspect of creep of concrete. Numerical models of reinforced concrete columns were developed. The first of the models is based on modification of σ-ε relationship for concrete by multiplying strain by factor (1 + φ(∞, t0)). The second model uses the ageing coefficient creep law with the modification of the creep coefficient φ(∞, t0) (according to formula (3.7) of Eurocode 2) to the value of φnl(∞, t0). Results of calculations of load bearing capacity according to the developed methods were compared. Good results were obtained.

Keywords: reinforced concrete columns; second order effects; creep of concrete; Eurocode 2.
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dr inż. Krzysztof Klempka, Uniwersytet Warmińsko-Mazurski w Olsztynie, Wydział Geodezji, Inżynierii Przestrzennej i Budownictwa
dr hab. inż. Piotr Korzeniowski, Politechnika Gdańska, Wydział Inżynierii Lądowej i Środowiska

K. Klempka

kik@uwm.edu.pl

Full paper is available at Publisher house SIGMA-NOT Sp. z o.o. webpage

DOI: 10.15199/33.2017.10.10