钢骨混凝土抗火性能非线性分析  

Nonlinear Analysis of Steel Reinforced Concrete Columns Under Fire

作　　者：陆洲导[1] 余江滔[1] 徐朝晖[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《同济大学学报（自然科学版）》2006年第11期1445-1450,共6页Journal of Tongji University:Natural Science

摘　　要：进行了12个钢骨混凝土柱火灾下反应的试验.利用有限单元法和有限差分法的混合解法,编制有限元计算程序,得到钢骨混凝土柱的温度分布和极限承载力的数值计算方法.通过程序计算与火灾试验结果的对比分析,验证了分析理论和计算程序的可靠性.通过各种受火时间、长细比和偏心距的钢骨混凝土柱抗火性能的计算,得出了相应的极限承载力计算公式.The experiments of 12 steel reinforced concrete （SRC） columns were carried out in fire. On the basis of a Eombined method of finite element and finite-difference, a finite element procedure for the temperature distribution and fire resistance capacity of SRC columns is programmed. Based on a comparative study of the test data and calculated results, the reliability of the procedure is validated both at elevated temperatures and ambient temperature. After analyzing the response of SRC column with different durations, slenderness ratios or eccentricities, the equations of ultimate strength are derived by regression.

关 键 词：钢骨混凝士柱 火灾 温度场 有限元 

分 类 号：TU352.5[建筑科学—结构工程]