Original scientific paper

Non-linear analysis of time-dependent response of concrete structures

Jože Lopatič ; University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, SI-1000, Ljubljana, SLOVENIA
Drago Saje ; University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, SI-1000, Ljubljana, SLOVENIA
Franc Saje ; University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, SI-1000, Ljubljana, SLOVENIA

Abstract

This paper deals with mechanical and rheological properties of concrete and with numerical modelling of the constitutive law of concrete taking into consideration its ageing, decomposition and non-linear creep. A developed method of general non-linear analysis of the time-dependent response of concrete structures is also presented. It is limited to reinforced, prestressed or composite plane frames. In addition to the influences of rheology, including the non-linear creep of concrete, the time-variable structural system can also be taken into account. Therefore, the presented method of analysis is suitable for predicting the time development of displacements and internal forces, and for making an estimation of the safety of concrete structures in any intermediate or final constructional phase. The applicability of the prepared software is briefly presented by example.

Keywords

concrete; rheology; ageing; shrinkage; creep; non-linear analysis; time-dependent response; numerical modelling; changeable structural system

Hrčak ID:

184998

URI

https://hrcak.srce.hr/184998

Publication date:

31.1.2012.

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