吉林大学学报(工学版) ›› 2023, Vol. 53 ›› Issue (6): 1736-1745.doi: 10.13229/j.cnki.jdxbgxb.20221615
• 交通运输工程·土木工程 • 上一篇
Chen JIN1,2(),Meng-yuan ZENG2,3,4(),Di-fei WU3
摘要:
采用振动传递理论分析了接缝刚度对振动跨缝传递特性的影响机制,并通过40万次缩尺度室内疲劳加载测试,验证了接缝边界损伤对振动传递特性的影响规律,据此建立了基于振动传递率的接缝损伤感知方法。依托6块水泥混凝土路面板接缝的振动传递率实测结果,并与弯沉比检测结果进行对比,检验振动传递率感知接缝损伤的实际效果。结果表明:接缝两侧振动传递率与接缝刚度显著相关(相关系数>0.8),在不同季节和不同接缝的重复性测试中振动传递率均能够灵敏、准确地感知接缝损伤(刚度损失比识别精度为±0.069),验证了该接缝损伤感知方法的可靠性。
中图分类号:
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