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在桩基工程中,为确保基桩施工质量,必须对基桩进行完整性检测。单一检测方法有时难以满足工程的需要,永宁高速公路基桩采用了钻芯法、声波透射法和低应变法的检测技术进行综合检测和分析,正确判别了桩身完整性。实践证明:低应变法和声波透射法可作为普查手段,而钻孔取芯法可根据其他2种方法检测结果按照规定频率或对有疑问的桩进行抽查,从而对疑问桩进行准确判断。
In pile foundation engineering, in order to ensure the quality of foundation pile construction, the integrity testing of foundation pile must be carried out. Single detection method is sometimes difficult to meet the needs of the project, Yongning Expressway pile using core drilling method, acoustic transmission method and low strain method of detection and comprehensive detection and analysis of the correct identification of the integrity of the pile. Practice has proved that: low strain method and acoustic transmission method can be used as a census means, and drilling coring method according to the other two kinds of test results in accordance with the provisions of the frequency of suspicious piles or spot checks, so as to accurately determine the suspect piles.