Performance of a six-story reinforced concrete structure in post-earthquake fire

This paper presents results of a 3D performance simulation of a six-story reinforced concrete structure exposed to a fire after the shaking table test for the Kobe Earthquake 1995. The structural analysis software, SAFIR, capable of 3D simulation of building structures in fire, was employed to evaluate performance of the building under fire. The ASTM E119 standard fire was selected as the fire load for this study. In order to consider the effects of damages to the structural elements during the earthquake, degradation of material mechanical properties and heat penetration, due to cracks, were considered for the post-earthquake fire analysis. The fire was assumed to have occurred on the ground floor next to the short columns that experienced considerable damage during the earthquake. A comparison study was implemented to investigate effects of material degradation and heat penetration on the fire resistance of the building after the earthquake.On pr\ue9sente dans ce document les r\ue9sultats d?une simulation de performance tridimensionnelle d?une structure de b\ue9ton arm\ue9 de six (6) \ue9tages qui a \ue9t\ue9 expos\ue9e \ue0 un incendie \ue0 la suite du test de table \ue0 secousse pour le s\ue9isme de Kobe de 1995. Le logiciel d?analyse structurale, SAFIR, offrant des capacit\ue9s de simulation tridimensionnelle de b\ue2timents subissant un incendie, a \ue9t\ue9 employ\ue9 pour \ue9valuer leur performance. On a choisi comme charge d?incendie pour cette \ue9tude l?incendie normalis\ue9 selon ASTM E119. Afin de prendre en compte les incidences des dommages subis par les \ue9l\ue9ments structuraux durant le s\ue9isme, l?analyse de l?incendie post-s\ue9isme a englob\ue9 l?examen de la d\ue9gradation des propri\ue9t\ue9s m\ue9caniques des mat\ue9riaux de m\ueame que le facteur de la p\ue9n\ue9tration de la chaleur par les fissures. On suppose que l?incendie a pris naissance au rez-de-chauss\ue9e, pr\ue8s des colonnes de faible hauteur qui ont subi des dommages consid\ue9rables dus au s\ue9isme. Une \ue9tude comparative a \ue9t\ue9 mise en ?uvre pour investiguer les incidences de la d\ue9gradation des mat\ue9riaux et de la p\ue9n\ue9tration de la chaleur sur la tenue au feu du b\ue2timent apr\ue8s le s\ue9isme.Peer reviewed: YesNRC publication: Ye