Analysis and Discussion on High-strain Dynamic Testing for Long Friction Pile
彭军 PENG Jun
（珠海市斗门区建设工程质量监督检测站，珠海 519125）
（Supervision 驭 Test Department for Construction Engineering of Doumen District，Zhuhai，Zhuhai 519125，China）
摘要：高应变法测桩在国内应用已有几十年的历程，广东区域在高应变应用领域更加成熟。高应变相对于单桩竖向抗压静载试验而言，它能够兼具检测桩的承载力和桩身完整性，能够拟合分析桩侧和桩端摩阻力情况。本文通过工程实例介绍高应变法在长摩擦桩中的应用，探讨分析桩身缺陷位置 LTD 值和桩身完整性系数 茁 值的合理性，以期能够有一定的借鉴价值。
Abstract: High-strain Dynamic Testing has been used in China for several decades, and Guangdong area is more mature in the field of High-strain Dynamic Testing application. Compared with the Vertical Compressive Static Loading Test of Single Pile, the High-strain Dynamic Testing can test both the bearing capacity and the integrity of pile body, also can fit and analyze the skin friction of pile side and tip. This paper introduces the application of High-strain Dynamic Testing method in long friction pile through engineering example, and discusses the rationality of LTD value of defect position and 茁 value of integrity coefficient of pile body, in order to have certain reference value.
关键词：长摩擦桩；高应变；承载力；桩身完整性
Key words: long friction pile；High-strain Dynamic Testing；bearing capacity；pile integrity
中图分类号：TU473.1 文献标识码：A 文章编号：1006-4311（2024）30-104-03 doi:10.3969/j.issn.1006-4311.2024.30.030
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