Modelling of cracks in reinforced concrete - Dr Agnieszka Jedrzejewska скачать в хорошем качестве

Modelling of cracks in reinforced concrete - Dr Agnieszka Jedrzejewska

Although the term “modelling” is usually associated with simulations of structures through the use of computer implementations of mathematical models, its meaning should be broadened to any activity in which a model of the structure is created to study its behaviour under specific conditions. Regarding cracking in reinforced concrete structures, additionally to computer simulations, this relates to experimental tests in which isolated parts of the structure are mocked-up to study the crack formation mechanism, as well as to the analytical models derived from the basic assumptions of reinforced concrete mechanics. The lecture gives background to the phenomenon of reinforced concrete cracking on different scales in time and space. A brief discussion is made on how the real behaviour of structural elements can be studied on a laboratory scale.  A concise overview is also made on the analytical, engineering-level models used for crack control. The main focus, though, is put on computer-aided simulations of cracking. The lecture presents different approaches to modelling and analysis of the process of cracking on structural level, providing guidance for the choice of the optimum modelling path for the task at hand.  Dr Agnieszka Jedrzejewska is an Assistant Professor at the Department of Structural Engineering of the Silesian University of Technology in Gliwice, Poland. She holds MSc(Eng) and PhD in structural engineering. She works mostly with structural concrete and design of reinforced concrete structures. For over a decade her research has been focused on serviceability limit state design of massive concrete structures and other structural elements subjected to cracking induced by the restraint of imposed deformations. She specialises in computer-aided modelling of reinforced concrete structures for development of engineering design methods; she has co-authored several publications on this topic. The main objective of her work is to bridge research and engineering practice. Agnieszka Jedrzejewska is actively participating in the works of the international community for structural concrete, including past COST Action TU1404 on service-life design of concrete structures where she was leading a Work Group on modelling of concrete. She is an active RILEM member since 2014, contributing to the works of its TCs: 254-CMS “Thermal cracking of massive concrete structures” and currently 287-CCS “Early-age and long-term crack width analysis in RC structures”.