摘要
编制了钢筋混凝土梁截面弯矩-曲率关系计算程序。采用该程序计算了不同混凝土强度等级、不同截面尺寸和不同配筋钢筋混凝土梁截面的弯矩-曲率关系。根据弯矩-曲率关系的计算结果,研究了混凝土开裂至纵向受力钢筋屈服这一阶段梁截面抗弯刚度的变化规律,给出了估计钢筋混凝土梁开裂后截面抗弯刚度的实用方法。可供既有混凝土结构性能检测评定时应用。
A computer program to calculate the moment-curvature relationship of reinforced concrete beam section is compiled. Using the program developed, moment-curvature relationship curves for reinforced concrete beam sections with different strength grades, different dimensions, and different reinforcement ratios are calculated. Based on the numerical simulation results, the bending stiffness deterioration behavior for reinforced concrete beams after cracking are studied and an applicable method to estimate the beading stiffness for a cracked reinforced concrete beam is proposed, which can be easily used in the inspection and assessment practice for existing reinforced concrete structures.
出处
《结构工程师》
2005年第5期20-23,共4页
Structural Engineers
