文档介绍：2004 ANSYS 中国用户论文集
ANSYS 在轻钢-混凝土组合梁抗火研究中的应用
毛小勇
湖南大学土木博士后流动站, 410082;苏州科技学院土木系, 215011
邵永健
苏州科技学院土木系,215011
[ 摘要] 应用 ANSYS 软件计算了轻钢-混凝土组合梁截面在标准升温模式下的温度场,并分析了各
参数对截面温度场的影响;然后利用其后处理功能将温度场计算结果导入轻钢-混凝土组合梁
抗火计算程序,对其抗火全过程曲线和抗力折减系数进行了分析。结果表明:由于混凝土的吸
热作用,钢梁的温度明显低于无混凝土时的裸钢构件;影响全过程曲线和抗力折减系数的主要
参数是梁高和钢梁厚度,而其它参数影响较小;抗力折减系数的变化在后期比前期剧烈一些。
[ 关键词] 组合梁;温度场;ANSYS 热分析;全过程曲线;抗力折减系数;抗火性能
Application of Ansys in Research of Behavior of Light-Weight
Steel-posite Beam under Fire
Mao Xiao-yong
College of Civil Engineering, Hunan University,Changsha,410082 ; College of Civil
Engineering, Suzhou Institute of Technology,Suzhou,215011
Shao Yong-jian
College of Civil Engineering, Suzhou Institute of Technology,Suzhou,215011
[ Abstract ] By using Ansys program, the temperature field of light-weight steel-posite
beams subjected to standard fire has been done. Factors related to the temperature field
have also been studied. Then result of temperature field was put out to the author’s own
program by using the post procedure function of Ansys. Full curve of members and load
resistance ratio have been resolved. Results show that : due to the heat absorbed by the
2004 ANSYS 中国用户论文集
concrete, the temperature field is lower than that of unprotected steel structures; the main
factors related to full curve and fire resistance load ratio is thickness and heigh