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混凝土桩的质量可用非破坏性試驗来进行检驗。文中介紹三种試驗法:机械阻抗法(振动)、声納探測法和反射波法。文中特別重視前两种方法的研究,不仅闡述了它們的原理,使用的仪器和試驗的步驟,而且还介紹了現場实施的条件。提供了在若干現場所获得的結果,使得它有可能显示为何必須說明試驗的原始結果;和确定每种方法的局限性。知道了同时使用两种方法能提高结果的分析精度。这样,在房屋建筑与公共研究中心的試验室創造这些方法以后的十年中,根据5000多根桩試驗所获得的經驗,我們可以得出結論这些方法已在实际使用中得到了驗证。
The quality of concrete piles can be tested with non-destructive tests. The article describes three test methods: mechanical impedance method (vibration), sonar detection and reflection wave method. In this paper, particular attention is paid to the first two approaches, not only their principle, the instruments used and the test procedures, but also the conditions for on-site implementation. Provided the results obtained at several sites, making it possible to show why the original results of the tests must be stated; and to determine the limitations of each method. Knowing that using both methods at the same time can improve the analytical accuracy of the results. In this way, based on the experience gained from more than 5000 pile tests in the ten years after the laboratories of the Building and Public Research Center created these methods, we can conclude that these methods have been validated in practice.