摘  要：能量演化贯穿于混凝土破坏的全过程，为分析混凝土破坏的危险性，选取C30、C45和C60三种混凝土进行单轴加载试验。结果表明：混凝土加载过程的吸收能、弹性能和耗散能呈先慢后快的非线性增长；混凝土的强度等级越高，储备弹性能的能力越强，其破裂所需要的耗散能更多，破坏的危险性越低；引入冲击能指标评价混凝土突然破坏危险性，C60混凝土表现为突然破坏危险性强烈，C45与C30混凝土突然破坏危险性中等。研究结果有助于指导机场道面的危险防控。

Abstract：Energy varies during the whole process of concrete deformation and failure. In order to analyze the danger of concrete damage, three kinds of concrete, C30, C45 and C60, were selected for uniaxial loading test. The results show that the absorbed energy, elastic energy and dissipated energy during the concrete loading process is nonlinear growth soon after the first slow. The higher strength grade of concrete is, the stronger reserve capacity elasticity is, the more dissipation energy required to rupture is, the lower the risk of destruction is. The impact energy index is introduced to evaluate the risk of concrete sudden damage. C60 concrete shows a strong risk of sudden damage, and the risk of C45 and C30 concrete sudden damage is moderate. The research results will help to guide the risk prevention and control of airport concrete pavement.