关于检测灌注桩水平裂缝的探讨

Discussion about the detection of Horizontal cracks in Concrete Pile

针对现有的桩基完整性检测方法对灌注桩水平裂缝检测辨识度不高的问题,提出结合孔内摄像手段对疑似水平裂缝的缺陷进行验证检测和综合判别,以工程检测实测数据为依据,对比分析了低应变法、钻芯法和孔内摄像法对水平裂缝缺陷的检测效果,论证因施工、地质等原因造成易出现桩身水平裂缝缺陷的地区,宜辅以孔内摄像对水平裂缝缺陷进行验证检测。

For the recognition of the existing pile integrity testing methods to detect horizontal cracks is not high, combining with the hole imaging method to detect and discriminate of the suspected horizontal fractures, measured data in engineering test as the basis, comparison and analysis of the low strain detection method, core drilling method and hole imaging method on horizontal fracture defect, demonstration due to construction, geological and other causes pile body horizontal crack area, should be complemented by horizontal cracks camera hole defect verification testing.