中文摘要：

基于频率的结构地震损伤识别方法具有快速、无损的优点，在试验研究的基础上，运用ABAQUS对高温下钢筋混凝土简支板进行动力特性分析，得出了高温下钢筋混凝土简支板温度场的分布规律，并在此基础上分析配筋率对钢筋混凝土板固有频率的影响以及温度场对简支板固有频率的影响；进一步建立温度场下钢筋混凝土简支板固有频率与混凝土损伤深度间的对应关系。通过分析研究可以看出板的温度和钢筋的温度直接影响板的固有频率。

英文摘要：

Structural seismic damage identification method based on the fre- quency is fast and non-destructive. On the basis of the experimental study, ABAQUS was used for the analysis of dynamic characteristics of high temperature reinforced concrete simply-supported slab, its temperature field distribution rule was obtained, and the influence of reinforcement ratio on natural frequency of reinforced concrete simply-supported slab and the influence of temperature field on natural frequency of the simply-supported slab were analyzed. The corresponding relation between the nat- ural frequency of reinforced concrete simply-supported slab in temperature field and the depth of the concrete damage was established. Through analysis and research, it can be found that slab temperature and reinforcement temperature directly affect the natural frequency of the slab.