摘要
为实现及时定位桥梁损伤,延长结构的服役时间,对柔度范数差曲率的损伤指标的损伤识别方法进行了研究。通过理论推导出损伤指标的公式,再建立一简支梁有限元模型进行数值模拟,验证该方法的有效性。结果表明,该方法能够识别多个工况的损伤位置,并且在不同水平噪声的影响下,该方法仍然具有良好效果,符合实际工程应用。
In order to locate the bridge damage in time and extend the service time of the structure,the damage identification method of the damage index with the curvature of the norm difference of flexibility matrix is studied.The formula of damage index is derived theoreti‐cally,and then a finite element model of a simply-supported beam is established for numerical simulation to verify the effectiveness of the method.The results show that the method can identify the damage location in different scenarios.And under the influence of different levels of noise,the method still has a good performance,which can be performed in the practical engineering application.
作者
朱秀清
ZHU Xiuqing(Guangzhou Shengtong Quality Testing of Construction Co.,Ltd.Guangzhou 510075,China)
出处
《广东土木与建筑》
2023年第12期101-104,共4页
Guangdong Architecture Civil Engineering
关键词
损伤检测
柔度矩阵
噪声
有限元
damage detection
flexibility matrix
noise
finite element
