岩溶地区冲孔灌注桩质量检测和缺陷处理  

QUALITY TEST AND DEFECT TREATMENT OF PERCUSSION DRILLING BORED PILE IN KARST AREAS

作　　者：王家全[1] 朱存金[1] 李磊[1] 

机构地区：[1]广西工学院土木建筑工程系,广西柳州545006

出　　处：《工业建筑》2012年第12期146-150,共5页Industrial Construction

基　　金：国家自然科学基金项目(51009030);广西自然科学基金项目(2011GXNSFB018003);广西工学院博士基金项目(院科博1011);广西工学院大学生科研项目(2011036)

摘　　要：结合广西岩溶地区高层建筑冲孔灌注桩工程实例,分析影响地处岩溶地区冲孔灌注桩质量各因素及其检测方法,并对低应变反射波法和超声波透射法及钻孔抽芯优缺点进行综合比较。根据各冲孔灌注桩自身情况的不同,提出如何综合运用低应变反射波法和超声波透射法及钻孔抽芯的不同组合,对地处岩溶地带冲孔灌注桩质量进行检测分析。此外,针对有缺陷的灌注桩,提出了有效的高压注浆法处理方案,对处理后的灌注桩再次运用超声波检测仪检测,效果较理想。Combining with the ease of percussion drilling bored piles for tall buildings in Guangxi karst area , it was analyzed the factors influencing the quality of such piles in the karst area and detection methods and comprehensively compared the advantages and disadvantages of low strain reflection wave method, ultrasonic transmission method and the drilling pumping core. According to the different situation of percussion drilling bored piles, it was put forward how to comprehensively use the different combinations of low strain reflected wave method, ultrasonic transmission method and borehole core, it was carried out testing and analysis of the quality of punching perfusion pile located in karst zone. In addition, According to the defective piles, it was put forward effective treatment plan of high pressure grouting method, and the treated piles were detected using ultrasonic detector test again, the effect was ideal.

关 键 词：岩溶 低应变反射波法 超声波透射法 高压注浆 

分 类 号：TU753.3[建筑科学—建筑技术科学]