【摘要】 研究火灾后钢管混凝土结构的抗震性能,对于合理进行该类结构火灾后的修复具有重要意义。本文通过对6个ISO-834标准火灾作用后方钢管混凝土构件进行往复荷载作用下的荷载-变形滞回性能试验,探讨火灾作用后方钢管混凝土荷载-变形滞回曲线的特点以及刚度退化规律,并对火灾作用后方钢管混凝土压弯构件极限承载力和抗弯刚度计算方法进行了讨论。更多还原

【Abstract】 The seismic behavior of concrete-filled SHS(Square Hollow Section)columns may be used to assess the potential damage caused by fire and to establish an approach to calculate the structural fire protection for minimum post-fire repair.This paper provides six column test data pertaining to the seismic behavior of concrete-filled SHS columns after exposure to fire.The characteristic of load-deformation hysteretic curve and the law of the stiffness degradation are discussed.The authors used different design methods to compare the member capacities and the stiffness of concrete-filled SHS columns after exposure to ISO-834 standard fire.更多还原