RESEARCH CONTENTS
Numerical analysis of explosion and crack propagation ofRC structures due to fire attack
Recently, high strength concrete is widely used on demand. Considering fire disaster, it is known that for high strength concrete explosion spalling occurs easily.
Furthermore, as RC structure damaged by fire attack, micro-crack occurs because of the difference of thermal expansion behavior between rebar and concrete or aggregate and cement paste.
Our laboratory conducts the study that numerical analysis is developed so as to clarify the explosion spalling and crack propagation behavior due to fire disaster.
With regards to explosion spalling, heat conduction analysis and transfer analysis of vapor pressure are coupled in this numerical analysis called as Truss Network Model.
In this model, explosion spalling is simulated by thermal expansion strain and vapor pressure. In addition, considering the behavior of thermal expansion between composite material and the change in material property, we can evaluate structural performance of RC structures after fire disaster.
Should you have any questions, please do not hesitate to contact us.
Taito MIURA: t.miura@civil.nagoya-u.ac.jp
