- 摘 要
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(上海交通大學(xué)土木工程系，上海 200240)
［摘要］介紹了利用ABAQUS軟件計算平面桁架結(jié)構(gòu)在火災(zāi)作用下的極限承載力和耐火極限的方法，并對平面桁架結(jié)構(gòu)進(jìn)行了火災(zāi)作用下的抗火性能分析，得出了在不同火災(zāi)溫度下的極限承載力和不同荷載比下的耐火極限溫度，并對計算結(jié)果進(jìn)行了分析比較。結(jié)果表明，20～200℃時，桁架的承載力變化不大，溫度在
［關(guān)鍵詞］平面桁架；抗火性能；極限承載力；耐火極限；有限元
Study on mechanical performance of steel planar truss under fire
Liu Minglu, Zhao Jincheng, Jin Meng(Department of Civil Engineering，Shanghai Jiaotong University，Shanghai 200240，China)
Abstract:Method for calculating the load bearing capacity and fire-resistance temperature for planar truss under fire by using the finite element software ABAQUS was introduced. Analysis of mechanical performance for planar truss under fire was also conducted. The limit load bearing capacities under different temperatures were obtained, as well as the fire-resistance temperatures under different load ratios. Comparisons of analytical results were made. The results indicate that when the temperature is at 20～
