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本文首次应用“相关分析技术”提出了一套简单、实用、可靠的桩基动态检测新方法。采用单桩激振,多桩响应拾取振动信号;实测桩身应力波波速;根据边界条件系数确定桩长;应用相关分析。谱分析及故障诊断技术判断桩身的完整性,并在上述试验,分析的基础上对桩基础进行分类。进行桩基的动静载荷试验时比,确定动、静相关系数,准确可靠地推算单桩坚向承载力标准值。在检测20％～30％桩的基础上,应用可靠度对现场桩基础做出综合评价,提高了桩基检测的整体可靠性。
For the first time, this paper applies “correlation analysis technology” to propose a simple, practical and reliable new method for dynamic detection of pile foundations. Single-pile excitation is used to pick up vibration signals from multiple piles; the velocity wave velocity of the pile body is measured; the length of the pile is determined according to the boundary condition coefficient; and the correlation analysis is applied. Spectral analysis and fault diagnosis techniques determine the integrity of the pile and classify the pile foundation on the basis of the above tests and analyses. When the static and dynamic load tests of the pile foundation were performed, the dynamic and static correlation coefficients were determined, and the standard value of the bearing capacity of the single pile was accurately and reliably calculated. Based on the detection of 20% to 30% piles, the reliability of the site pile foundation was comprehensively evaluated to improve the overall reliability of the pile foundation inspection.