研究结果表明火灾中钢构件内力分析时，可把构件视为理想的弹塑性体；
The results show that steel structure member can be regarded as ideal elastic-plasticity body when analyzing its internal force in fire.
本文以槽钢为主要研究对象，假定材料为理想弹塑性体，在ANSYS中建立其有限元模型。
The main study object of the paper is channel steel whose finite element models are founded in ANSYS the material is assumed as elastic-plastic body.
对两端固定的工字钢短柱的温度应力进行试验研究，给出的温度应力估算公式与试验结果符合性较好。研究结果表明火灾中钢构件内力分析时，可把构件视为理想的弹塑性体；
The temperature stress of I-profile short axially-restricted column is studied, a regression formula of temperature stress is proposed, and it agrees well with the experimental results.
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