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根据基于孔压静力触探(CPTU)测试技术评价桩基水平承载特性的相关文献,对目前CPTU测试技术评价桩基水平承载特性的方法进行了综述,对比了CPTU测试技术以及另外几种原位测试技术——旁压仪测试(PMT)、扁铲侧胀仪测试(DMT)、标准贯入仪测试(SPT)分析水平受荷桩承载力和变形的原理以及预测结果。通过分析不同方法的评价结果,归纳了几种技术各自的优势和不足。分析结果表明:与其它三种技术相比,CPTU能够获得连续的数据,采集数据量大,测试精度高,既可以与桩基水平承载力直接建立关系,又能通过估算土体参数设计p-y曲线,在评价桩基水平承载特性方面具有广阔的应用前景。侧壁摩阻力和孔隙水压力对锥尖阻力与桩侧土抗力关系的影响有待进一步研究。
According to the related literature of evaluating the horizontal bearing characteristics of pile foundations by the CPTU test technique, the current methods of evaluating the horizontal bearing characteristics of pile foundation by the CPTU test technique are reviewed. The CPTU test technique and the comparison of several original Bit test technique - PMT, DMT and SPT to analyze the principle of horizontal load-bearing pile’s bearing capacity and deformation as well as the prediction results. By analyzing the evaluation results of different methods, the advantages and disadvantages of several technologies are summarized. The results show that compared with the other three technologies, CPTU can obtain continuous data with large amount of collected data and high test precision, which can directly establish the relationship with the horizontal bearing capacity of pile foundation and design the py curve by estimating soil parameters , Which has broad application prospects in evaluating the horizontal bearing characteristics of pile foundation. The influence of sidewall friction and pore water pressure on the relationship between cone tip resistance and soil resistance at pile side needs further study.