摘要
钢筋锈蚀是钢筋混凝土构件在使用过程中常见的也是最具有破坏性的病害之一,为准确判断钢筋锈蚀对结构安全和耐久性的影响,延长结构的使用寿命并达到节能环保的目的,实现钢筋锈蚀的无损探测尤为重要,而振动诊断技术通过测试结构的动力响应使钢筋锈蚀的无损探测成为可能。通过有限元仿真技术,研究简支梁在不同钢筋锈蚀程度下的频率、振型以及曲率值等动力响应规律,为基于结构振动动力响应的钢筋锈蚀无损探测技术提供基础数据。
Steel bar corrosion is one of the most common and destructive diseases in the use of concrete members.In order to accurately judge the influence of steel corrosion on the safety and durability of the structure,prolong the service life of the structure and achieve the purpose of energy conservation and environmental protection,it is particularly important to realize the nondestructive detection of steel corrosion.By testing the dynamic response of the structure,vibration diagnosis technology makes the nondestructive detection of steel corrosion possible.Based on the finite element simulation technology,the dynamic response rules of the simply supported beam under different reinforcement corrosion degree,such as frequency,mode shape and curvature value,are studied,which provides the basic data for the nondestructive detection technology of reinforcement corrosion based on the dynamic response of structural vibration.
作者
赵海艳
ZHAO Haiyan(Shandong Transportation Planning and Design Institute,Jinan Shandong 250031,China)
出处
《交通节能与环保》
2021年第3期105-110,共6页
Transport Energy Conservation & Environmental Protection
关键词
桥梁工程
无损探测
钢筋锈蚀
动力响应
bridge engineering
nondestructive detection
steel corrosion
dynamic response
