摘要
基于钢筋混凝土结构的破坏原理 ,钢筋的作用力远大于混凝土裂纹端部的粘聚力作用 ,提出基体裂纹处存在与其相垂直的强化筋力学分析模型 ,采用断裂力学的分析方法 ,按筋相对于裂纹尖端距离的远近分两种情况研究 :一种情况是当筋位于裂纹端部时 ,进行筋与基体裂纹附近介质之间的作用力分析 ;第二种情况是当非线性材料筋距离裂纹尖点比较远时 ,考虑筋桥接裂纹处与基体间存在脱粘段的存在 。
Based upon failure principles of reinforced concrete structure,in which the effect of reinforced bar is better than the cohesive force of fracture zone on the crack opening and developing,a analytical model of crack with a reinforced bar being vertical to the crack is presented.By use of the analysis method of fracture mechanics,two situations are studied according to the distance between the crack tip and the reinforced bar The first situation is the bar being near the crack tip,and the interaction force between the bar and matrin is researched.The second situation is when the reinforced bar with nonlinear constitution relationship material property is far from the crack tip Taking a piece of bar deviated from matrix medium accounted,the analysis of the force and deformation of the bar,and the relationship of far load and the length of deviated bar, are also given
出处
《三峡大学学报（自然科学版）》
CAS
2002年第1期26-28,41,共4页
Journal of China Three Gorges University：Natural Sciences
基金
国家自然科学杰出青年基金 (5962 581 4 )
中国博士后科学基金资助项目
