多种检测及验证方法在基桩检测中的应用

Application of Various Detection and Verification Methods in Foundation Pile Detection

桩基础是国内应用最为广泛的一种基础形式,其工程质量涉及上部结构的安全[1]。根据目前现行验收标准,主控项目为承载力和桩身完整性。承载力的检查方法为静载试验或高应变法等,桩身完整性的检查方法为低应变法等。但由于各个方法自身具有局限性,有时根据这些方法无法准确地获知基桩的承载力和完整性是否符合设计要求,从而造成误判。文章通过工程实例说明采用多种检测方法相互补充、验证,从而有效提高基桩检测结果判定的可靠性。

Pile foundation is the most widely used foundation form in China, and its engineering quality involves the safety of superstructure [1]. According to the current acceptance standards, the main control items are bearing capacity and pile integrity. The inspection method of bearing capacity is static load test or Highstrain dynamic testing, and the inspection method of pile integrity is Low-strain integrity testing, etc. However,due to the limitations of each method, sometimes these methods can not accurately know whether the bearing capacity and integrity of the foundation pile are required by the design, resulting in misjudgment. Through engineering examples, this paper shows that a variety of detection methods are used to complement and verify each other, so as to effectively improve the reliability of the judgment of pile detection results.