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基础施工中，由于种种原因，混凝土灌注桩有时会出现某些缺陷。使用低应变反射波法可对桩身进行完整性检测。检测中，浅部离析桩、缩颈桩占缺陷桩很大一部分。本文结合工程实例，介绍采用ＲＳＭ１２Ｈ 基桩动测仪检测这两类缺陷桩的经验及工作方法。
In foundation construction, due to various reasons, concrete piles sometimes have some defects. The integrity of the pile can be tested using the low-strain reflected wave method. During the test, the shallow segregated piles and necked piles account for a large part of the defective piles. In this paper, combined with engineering examples, the experience and working methods of detecting these two types of defective piles with the RSM12H pile-based dynamic tester are introduced.