声波透射法在机场改扩建工程中基桩检测的应用分析  

Application of Acoustic Transmission Method in Foundation Pile Detection in Airport Renovation and Expansion Project

作　　者：余明 YU Ming(Hunan Province Geological Disaster Survey and Monitoring Institute,Changsha 410000,China)

机构地区：[1]湖南省地质灾害调查监测所,长沙410000

出　　处：《华南地震》2024年第4期177-184,共8页South China Journal of Seismology

摘　　要：针对传统基桩检测方法存在的缺陷定位不准、检测结果精度低、分级评价容易出现偏差等问题,以长沙机场改扩建工程为例,分析声波透射法在基桩检测中的应用。通过初步检测与跨孔声波透射法结合,精确探测基桩缺陷范围,利用声波传播特征和参数变化,获取缺陷详细信息。采用PSD斜率法量化异常数据,提高定位精度。结合声学参数分析,对基桩完整性进行分类评估,指导建造工作,提升工程质量。实验结果表明:声波透射法可以直观的判断基桩是否存在缺陷,并进行详细定位,检测结果直观、精确、高效,提升作业效率,对于基桩质量的分级评估完全符合工程规范要求,具有很高的参考价值。In response to the problems of inaccurate defect positioning,low accuracy of detection results,and easy deviation in grading evaluation in traditional foundation pile detection methods,taking the Changsha Airport renovation and expansion project as an example,this paper analyzes the application of acoustic transmission method in foundation pile detection.By combining preliminary detection with the cross-hole acoustic transmission method,the range of foundation pile defects was accurately detected,and detailed information of defects was obtained by utilizing the characteristics of acoustic wave propagation and parameter changes.The PSD slope method was used to quantify abnormal data and improve positioning accuracy.According to acoustic parameter analysis,the integrity of foundation piles was classified and evaluated to guide the construction work and improve engineering quality.The experimental results show that the acoustic transmission method can intuitively determine whether there are defects in the foundation pile and locate the defects.The detection results are intuitive,accurate,and efficient,which improves operation efficiency.The grading evaluation of the foundation pile quality fully meets the requirements of engineering specifications and has a high reference value.

关 键 词：基桩检测 声波透射法 超声波检测仪 基桩完整性检测 PSD斜率法 工程质量 

分 类 号：TU473.16[建筑科学—结构工程]