ENAC Seminar Series by Dr A.-C. Ferche
Event details
| Date | 24.08.2021 |
| Hour | 15:00 › 16:00 |
| Speaker | Dr Anca-Cristina Ferche |
| Location | Online |
| Category | Conferences - Seminars |
| Event Language | English |
15:00 – 16:00 – Dr Anca-Cristina Ferche
Postdoctoral researcher, York University, Canada
Finite Element Modelling of Deteriorated Concrete Structures
The talk will explore influential behavioural mechanisms that should be considered when modelling the response of reinforced concrete structures, whether they occur due to deterioration mechanisms or due to loading protocol.
Iconic ancient structures prove concrete’s durability through time. Yet concrete is vulnerable to a number of factors causing premature deterioration. Among the deterioration mechanisms are endogenous chemical reactions such as alkali-silica reactivity (ASR) that lead to expansion and cracking of concrete which, in turn, may result in cover spalling and corrosion of the embedded reinforcement. Depending on the level of distress, oftentimes deteriorated structures require structural assessment to decipher observed behaviour, estimate residual capacity, and inform rehabilitation works.
The structural implications of the ASR-induced deterioration and the simultaneously acting mechanisms that influence the response of damaged structures will be examined. Focus will be placed on finite element modelling at a structural scale. The approach developed treats reinforced concrete as an orthotropic material based on a smeared rotating-crack model within the context of a total-load secant-stiffness macro-modelling framework.
A recently developed crack-slip model suited for the analysis of structures subjected to cyclic and reversed cyclic loading will also be presented. The crack-slip mechanism is an energy dissipation source with a pronounced effect on elements subjected to high shear demand and for lightly reinforced structures. Not accounting for it may lead to dangerously unconservative estimates of capacity.
Short bio:
Dr. Anca-Cristina Ferche is an Assistant Professor in the Department of Civil, Architectural and Environmental Engineering at the University of Texas at Austin. Dr. Ferche’s research is focused on the behaviour and modelling of reinforced concrete structures. Her research interests include the development of advanced computational procedures for the performance assessment of reinforced and prestressed concrete structures, assessment of the structural implications of concrete deterioration mechanisms, rehabilitation of existing concrete structures, and modelling the response of concrete structures subjected to extreme loading conditions. They all speak to an overarching interest in contributing to the development of robust concrete infrastructure. Dr. Ferche is developing computational software tools for the analysis of concrete structures which are being used in academic and industry applications.
Postdoctoral researcher, York University, Canada
Finite Element Modelling of Deteriorated Concrete Structures
The talk will explore influential behavioural mechanisms that should be considered when modelling the response of reinforced concrete structures, whether they occur due to deterioration mechanisms or due to loading protocol.
Iconic ancient structures prove concrete’s durability through time. Yet concrete is vulnerable to a number of factors causing premature deterioration. Among the deterioration mechanisms are endogenous chemical reactions such as alkali-silica reactivity (ASR) that lead to expansion and cracking of concrete which, in turn, may result in cover spalling and corrosion of the embedded reinforcement. Depending on the level of distress, oftentimes deteriorated structures require structural assessment to decipher observed behaviour, estimate residual capacity, and inform rehabilitation works.
The structural implications of the ASR-induced deterioration and the simultaneously acting mechanisms that influence the response of damaged structures will be examined. Focus will be placed on finite element modelling at a structural scale. The approach developed treats reinforced concrete as an orthotropic material based on a smeared rotating-crack model within the context of a total-load secant-stiffness macro-modelling framework.
A recently developed crack-slip model suited for the analysis of structures subjected to cyclic and reversed cyclic loading will also be presented. The crack-slip mechanism is an energy dissipation source with a pronounced effect on elements subjected to high shear demand and for lightly reinforced structures. Not accounting for it may lead to dangerously unconservative estimates of capacity.
Short bio:
Dr. Anca-Cristina Ferche is an Assistant Professor in the Department of Civil, Architectural and Environmental Engineering at the University of Texas at Austin. Dr. Ferche’s research is focused on the behaviour and modelling of reinforced concrete structures. Her research interests include the development of advanced computational procedures for the performance assessment of reinforced and prestressed concrete structures, assessment of the structural implications of concrete deterioration mechanisms, rehabilitation of existing concrete structures, and modelling the response of concrete structures subjected to extreme loading conditions. They all speak to an overarching interest in contributing to the development of robust concrete infrastructure. Dr. Ferche is developing computational software tools for the analysis of concrete structures which are being used in academic and industry applications.
Practical information
- General public
- Invitation required
- This event is internal
Organizer
- ENAC
Contact
- Cristina Perez