节点文献
双K准则中起裂韧度KICini的讨论
Discussion on the initial fracture toughness KICini in the double-K criterion
【摘要】 讨论了双K准则中起裂韧度的有关问题,分析了混凝土三点弯曲梁和楔入劈拉2种典型试验方法下,起裂韧度与失稳韧度的比值随起裂荷载与最大荷载比值及初始缝长与等效临界缝长比值变化的关系;用已有试验成果确定了2种典型试验方法下,混凝土起裂韧度和失稳韧度比值的大致范围;对混凝土起裂韧度的工程应用进行了讨论。
【Abstract】 Some questions concerning initial fracture toughness in the double-K criterion are discussed.The relation between initial fracture toughness and unstable fracture toughness is analyzed as two kinds of typical experiment methods of concrete are utilized.The approximate range of the ratio of initial fracture toughness to unstable fracture toughness is determined.The engineering practicality of concrete’s initial fracture toughness is also discussed.
【关键词】 混凝土;
双K准则;
楔入劈拉;
三点弯曲梁;
断裂韧度;
等效临界缝长;
【Key words】 concrete; double-K criterion; edge splitting; three-point bending beam; fracture toughness; equivalent critical crack length;
【Key words】 concrete; double-K criterion; edge splitting; three-point bending beam; fracture toughness; equivalent critical crack length;
- 【文献出处】 合肥工业大学学报(自然科学版) ,Journal of Hefei University of Technology(Natural Science) , 编辑部邮箱 ,2006年06期
- 【分类号】TU375
- 【被引频次】3
- 【下载频次】142