چکیده مقاله
This paper tries to study the effect of previously heated concrete on structural behavior of reinforced concrete beams through three dimensional analyses In the first part, a constitutive model was developedfor plane concrete heated up to the desired levels The concrete model developed in VISUAL FORTRANcomputer language follows continuum damage theory to present a damage value separately for each microplane From the results of concrete model compared with experimental evidences, stress strain diagrams were extracted under uniaxial compression/tension loading states The stress strain curves ofheated concrete have been directly utilized to introduce concrete behavior during non linear finite element analysis of a reinforced concrete beam Through the second part, the commercial code ANSYS was incorporated and response of the beam was studied for cracking and nonlinear behavior of steel, concrete In conclusion crack growth of the beam simulated according to micro plane model data in different temperatures have been presented
کلیدواژهها
نویسندگان
Amin Amirpour
Department of Civil Engineering, Faculty of Engineering, K N T University, Tehran
Ali Edalat Behbahani
Amin Amirpour Department of Civil Engineering, Faculty of Engineering, K. N. T University, Tehran
شیوه ارجاع
Amirpour, Amin and Edalat Behbahani, Ali,1391,3D Finite Element Modeling via Smeared Crack Approach of RC Beams after Exposure to High Temperatures,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات نهمین کنگره بین الملی مهندسی عمران19 اردیبهشت 1391 · اصفهان