Cyclic freezing-thawing can lead to fracture development in coal,affecting its mechanical and consumer properties.To stu......

阐述用断裂动力学的方法对混凝土平面框架结构进行破损评估，建立含裂缝单元的刚度矩阵，利用断裂动力特征方程，对损伤部位的裂缝高度进......