基于声发射速率过程理论的混凝土损伤评估研究综述

Study on damage evolution of concrete based on acoustic emission rate process theory

混凝土内部裂缝开展状况与声发射活跃状态是紧密相关的,而声发射速率过程理论是对声发射活性的具体描述。在对国内外相关文献进行研究分析的基础上,分析了声发射速率过程理论的原理,总结了基于声发射速率过程理论和Loand模型的损伤力学方程的定量损伤评估方法。从混凝土、岩石等材料的工程应用方面阐述了基于上述声发射速率过程理论的损伤评估方法的有效性和准确性,并总结了目前该领域的研究重点和不足。

Development condition of cracks in concrete is closely related to acoustic emission（AE） active state, and AE rate process theory is a specific description of acoustic emission activity. On the basis of domestic and foreign literature having been classified and summarized, acoustic emission rate process theory and Loand damage mechanics equations which is to quantitatively evaluate damage of concrete in the engineering have been summarized by analyzing the acoustic emission rate process theory principle. The effectiveness and accuracy of damage evaluation method of AE rate process theory are elaborated in the application status of civil engineering, such as concrete,geotechnical engineering and so on. Research focuses and key issues that need further study, in this field are summarized.