【摘要】 利用频率变化比及频率变化的平方比两种固有频率特征量的谱线图对比识别混凝土构件损伤的出现和损伤位置.为此,利用Matlab软件编制了混凝土梁的有限元振动计算程序,对混凝土悬臂梁在发生损伤前后的两种固有频率特征量进行了仿真计算.结果表明频率变化比及频率变化的平方比两种特征量的谱线图均可确定混凝土悬臂梁三损伤的位置,两种特征量的谱线图皆可用于混凝土构件的损伤探测.更多还原

【Abstract】 To detect the occurance and location of fault in concrete structure, two frequency graphs of natural frequency are used. Two natural frequencies of concrete cantilever beam in different situations are simulated with the finite element program developed by Matlab. Results show that the damage part of structure are identified by the graphs of frequency effectively and those two approachs for the structure fault diagnosis could be used in practice.更多还原