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研究岩石、混凝土等脆性材料在动载作用下的断裂破坏过程,即裂纹产生、裂纹扩展以及裂纹停止,对于研究岩石、混凝土等材料的断裂破坏机理,给工程防护提供设计依据,控制岩石、混凝土等构造物的破坏与断裂方向是非常重要的。本文主要论述了动荷载作用下岩石等脆性材料的断裂破坏机理,裂纹形成与扩展以及裂纹的止裂与控制等内容。
To study the fracture failure process of brittle materials such as rock and concrete under dynamic load, ie crack generation, crack propagation and crack stoppage, to study the fracture and failure mechanism of rock, concrete and other materials, provide design basis for engineering protection, and control rock and concrete. The destruction and fracture directions of structures are very important. This paper mainly discusses the fracture failure mechanism of rock and other brittle materials under the action of dynamic loads, the formation and propagation of cracks, and crack arrest and control of cracks.