声波透射法和低应变反射波法联合检测在北京新机场中的应用  

Application of Acoustic Transmission and Low Strain Reflection Wave Methods in the Integrity Testing of Piles in Beijing New Airport

作　　者：雷永裕 吴晓寒[1] 邹桂高[1] LEI Yongyu;WU Xiaohan;ZOU Guigao(AVIC Institute Geotechnical Engineering Co.Ltd.,Beijing 100098)

机构地区：[1]中航勘察设计研究院有限公司,北京100098

出　　处：《土工基础》2020年第1期84-88,共5页Soil Engineering and Foundation

摘　　要：桩基础作为建筑物基础的主要型式之一,具有适应性强,抗震性能好,承载力能力高,沉降量小等优点,确保钻孔灌注桩桩身质量显得尤为重要。结合北京新机场航站区桩基础检测项目,采用两种传统的桩身完整性检测方法进行联合检测。通过对两种检测方法的应用效果进行分析,列出了两种方法的优缺点。综合应用两种检测方法,能够有效的提高检测结果准确性。With the rapid development, there are more and more urban high-rise building structures. As the major building foundation type, the piled foundation has strong adaptability, good seismic performance, high axial capacity and small settlement under the structure loadings, so it is particularly important to ensure the quality of bored and cast-in-place pile so that the foundation safety can be met. This paper presents a case history of the pile integrity testing methods used in the Beijing new airport terminal project. Both the acoustic transmission and the low strain reflection wave methods were used in the project and their advantages and disadvantages were compared. It is concluded that the combination application of both method on the same pile can improve the accuracy of testing results.

关 键 词：北京新机场 声波透射法 低应变反射波法 桩身完整性检测 钻孔灌注桩 

分 类 号：TU413[建筑科学—岩土工程]