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在旧建(构)筑物改造、盾构施工甚至工程纠纷等诸多情况下要准确获知桩的长度信息,现有技术手段存在诸多不足,仍是一个尚待解决的难题。旁孔透射波法在欧美等国家得到了广泛的应用,相应的检测仪器以及配套软件等已步入商业化阶段。对于旁孔透射波法,国内亦有少量文献及工程实例的报道,但是内容略显粗浅,对于指导工程实践仍不够充分。本文在基桩检测中常用反射波法的基础上,详细介绍了旁孔透射波法的基本原理、现场检测及信号分析等内容,以期能为相关工程技术人员提供参考,推动该项技术在国内的发展。
In many cases, such as the reconstruction of old buildings (structures), shield construction and even engineering disputes, it is still an unsolved problem to know the length of pile information accurately and there are many deficiencies in the existing technical means. Side-hole transmission wave method in Europe and the United States and other countries have been widely used, the corresponding detection equipment and supporting software have entered the commercial stage. For the side-hole transmission wave method, there are a small amount of domestic literature and project examples reported, but the content is superficial, for guiding the engineering practice is still not sufficient. Based on the commonly used reflected wave method in the detection of piles, this paper introduces the basic principles of the side-hole transmission wave method in detail, the content of field detection and signal analysis in order to provide references for relevant engineers and technicians to promote the technology in domestic development of.