34 research outputs found

    A model for evaluating the fire resistance of contour- protected steel columns

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    A numerical model, in the form of a computer program, for evaluating the fire resistance of insulated wide-flange steel columns is presented. The three stages associated with the thermal and structural analysis in the calculation of fire resistance of columns is explained. The use of the computer program for tracing the response of an insulated steel column from the initial pre-loading stage to collapse, due to fire, is demonstrated. The validity of the numerical model used in the program is established by comparing the predictions from the computer program with results from full-scale fire tests. Details of fire tests carried out on wide-flange steel columns protected with ceramic fibre insulation, together with results, are presented. The computer program can be used to evaluate the fire resistance of protected wide-flange steel columns for any value of the significant parameters, such as load, section dimensions, column length, type of insulation, and thickness of insulation without the necessity of testing.Nous pr\ue9sentons ici un mod\ue8le num\ue9rique sous la forme d?un programme servant \ue0 \ue9valuer la tenue au feu des poutres d?acier \ue0 ailes larges isol\ue9es. Les trois (3) stades qui sont associ\ue9s \ue0 l?analyse thermique et \ue0 l?analyse structurale dans le calcul de la tenue au feu des poutres sont expliqu\ue9s. On d\ue9montre l?utilisation du programme aux fins du tra\ue7age de la courbe de r\ue9ponse de la poutre d?acier isol\ue9e, \ue0 partir du stade pr\ue9alable \ue0 la charge jusqu?\ue0 l?effondrement caus\ue9 par le feu. La validit\ue9 du mod\ue8le num\ue9rique employ\ue9 dans le programme est \ue9tablie par comparaison des pr\ue9dictions du programme avec les r\ue9sultats provenant des essais de r\ue9action au feu en vraie grandeur. Sont expos\ue9s les d\ue9tails des essais de r\ue9action au feu men\ue9s sur les poutres d?acier \ue0 ailes larges prot\ue9g\ue9es par un isolant en fibre de c\ue9ramique, ainsi que les r\ue9sultats de ces essais. On peut employer ce programme pour \ue9valuer la tenue de poutres d?acier \ue0 ailes larges prot\ue9g\ue9es relativement \ue0 toute valeur des param\ue8tres significatifs, tels que la charge, les dimensions de la section, la longueur des poutre, le type et l?\ue9paisseur de l?isolant, sans n\ue9cessiter de mise \ue0 l?essai.Also to be published in Sixth IAFSS Symposium in France.Peer reviewed: YesNRC publication: Ye

    AN INTRAMUSCULAR MYXOMA OF THE HAND

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