| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 98 === To predict the behavior of steel structure under fire effect, the material properties is very important in the analysis in steel structure in high temperature environment. This study adopted the Vector Form Intrinsic Finite Element (VFIFE) method to investigate the nonlinear behavior of steel structures under heating and creep effects conditions, and establish the numerical analysis model of flat steel in high temperature environment. According to the numerical examples of related reference, we first confirm the applicability and accuracy of VFIFE .
By using the modified VFIFE in previous mention, we study the creep Buckling of steel columns in high temperature environment with different load ratio, heating rate, slenderness ratio and boundary restraint condition as parameters of this study. Furthermore, we respectively compare the result with or without creep effect, to discuss the importance of creep
effect in fire.
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