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借助IDTS3850振动测试仪,记录与分析室内外试验中不同脱空状态下水泥混凝土路面板的微地震波,初步获得了水泥混凝土路面板在不同脱空状态下的振动特性规律,并提出了基于振动特性规律的地震波法测定混凝土路面板脱空状况的判断标准。试验结果表明:板的脱空状态(无脱空、轻微脱空、严重脱空)与其振动特性参数(最大振速、主频、振动时间)之间具有良好的相关性,地震波法检测脱空可行。
The IDTS3850 vibration tester was used to record and analyze the microseismic waves of cement concrete pavement slabs under different void conditions in indoor and outdoor tests. The vibration characteristics of cement concrete pavement slab under different void conditions were preliminarily obtained, and the vibration characteristics The Judging Criterion for Determining the Condition of Concrete Pavement Slabs by Regular Seismic Wave Method. The test results show that there is a good correlation between the void state of the plate (no void, slight voidage and severe voidage) and its vibration characteristic parameters (maximum vibration velocity, frequency and vibration time) feasible.