混凝土灌注桩钻芯检测常见问题分析  

Analysis of Common Problems in Drilling Core Testing of Concrete Grouting Piles

作　　者：王小威 胡彩侠 WANG Xiao-wei;HU Cai-xia(Shenzhen Housing Safety and Engineering Quality Testing and Appraisal Center.,Shenzhen 518052;Shenzhen Gongkan Geotechnical Group Co.,Ltd.,Shenzhen 518000)

机构地区：[1]深圳市房屋安全和工程质量检测鉴定中心,深圳518052 [2]深圳市工勘岩土集团有限公司,深圳518000

出　　处：《广州建筑》2024年第7期39-43,共5页GUANGZHOU ARCHITECTURE

摘　　要：对于普通抽芯,借助孔内摄像技术辅助分析了灌注桩钻芯检测中检测桩桩长的确定、桩身混凝土芯样严重蜂窝、连续沟槽、破碎及松散的区分辨别及判定、桩身水平裂缝和竖向裂缝缺陷位置和范围的确定、桩底沉渣厚度综合判定以及持力层溶洞位置及溶洞深度的确定等常见问题,进而对缺陷桩给出合理且精确的判定。本文对钻芯检测缺陷桩的判定,具有一定的指导意义。For ordinary core extraction,common problems such as determining the length of the pile,distinguishing and judging severe honeycomb,continuous groove,fragmentation,and looseness in the concrete core sample of the pile body,determining the location and range of horizontal and vertical crack defects in the pile body,comprehensively determining the thickness of the pile bottom sediment,and determining the position and depth of the bearing layer karst cave were analyzed with the assistance of in hole camera technology,Furthermore,a reasonable and accurate judgment is provided for the defective pile.This article has certain guiding significance for the determination of defective piles in core drilling detection.

关 键 词：钻芯检测 孔内摄像技术 裂缝 桩底沉渣 溶洞 

分 类 号：TU375[建筑科学—结构工程]