Ponencia
Modelling of the behavior of post-tensioned concrete structures subjected to long term thermal loads
Autor/es | Medina Reguera, Fernando
Cifuentes-Bulté, Héctor Medina Encina, Fernando |
Fecha de publicación | 2015 |
Fecha de depósito | 2016-02-22 |
ISBN/ISSN | 978-84-606-9356-7 |
Resumen | The effect of the reduction of concrete material strength and the deformations and stress level due to the non-uniform temperature distribution within a structural element such as a storage tank has a coupled negative ... The effect of the reduction of concrete material strength and the deformations and stress level due to the non-uniform temperature distribution within a structural element such as a storage tank has a coupled negative effect on the post-tensioned concrete design. Heated strands embedded in a heated concrete element will elongate, hence reducing the post-tensioning force. This reduction will reduce the confinement of concrete, which added to the temperature gradient derived tension results in a greater level of damage and cracking. This study sets up a strongly non-linear model that attempts to account for all these effects. The results show that cracking localization grows surrounding the tendon duct, producing a sharp decrease in the post-tensioning force and a significant reduction of global stiffness |
Cita | Medina Reguera, F., Cifuentes, H. y Medina Encina, F. (2015). Modelling of the behavior of post-tensioned concrete structures subjected to long term thermal loads. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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CMMoST 2015_Medina_Modelling.pdf | 2.363Mb | [PDF] | Ver/ | |