【摘要】 基于三维瞬态温度场和二维平面有限元力学模型,编制了钢筋混凝土框架结构高温反应的全过程分析程序;利用前人的试验结果,程序的正确性得到了验证。选取一榀单层3跨的钢筋混凝土中框架,针对不同梁柱线刚度比和不同柱子轴压比的情况分别进行了该框架的高温反应分析,定性给出了部分控制点位移随时间的变化规律。更多还原

【Abstract】 An analytical program for reinforced concrete frame subjected to high temperature is proposed in this paper,which is based on three dimensional transient thermal field and two dimensional finite element mechanical model.The reliability of the program is validated using the test results provided by former researchers.A three-span one-storey reinforced concrete midframe is selected for fire response analysis,different line stiffness ratios of beam to column and different axial load ratios of column are considered in the analysis.Based on simulation results,the variation of deformations at some key points in the frame with time is discussed.更多还原