静载试验法与高应变法在桩基检测中的综合比较研究  

Comprehensive comparative study of high strain method and static load test method in pile foundation testing

作　　者：林杰昶 LIN Jiechang(Guangdong Guoji Testing Technology Co.,Ltd.,Guangzhou 510000,Guangdong,China)

机构地区：[1]广东国基检测科技有限公司,广东广州510000

出　　处：《工程建设》2025年第4期81-86,共6页Engineering Construction

摘　　要：为确保桩基工程的安全、可靠和经济高效,提升桩基检测的准确性至关重要。文章以某大型电厂桩基工程质量检测为研究对象,分别采用静载试验法和高应变动力检测法对后注浆灌注桩试桩区3根试桩进行检测,并将检测结果与理论计算结果进行综合对比分析。结果表明:相较于高应变法,静载试验所提供的检测结果更为直观且精确,能够更真实地反映桩基的实际承载性能,但静载试验的实施过程耗时较长,且伴随的经济成本也相对较高;静载试验及高应变法所获得的实测承载力特征值均大于设计时所设定的承载力特征值标准,满足设计要求;两种检测方法所得的承载力检测结果均与理论公式计算得出的结果相符,高应变法所获得的承载力特征值比静载试验得出的结果小;高应变法在桩基承载力检测领域,以其高效、经济的特点,能够作为静载试验有效补充。本研究成果可为同类工程中的桩基检测提供参考和借鉴。To evaluate the reliability and applicability of pile foundation load testing methods,It is of great significant to enhance the accuracy of pile foundation testing.Taking the quality inspection of pile foundations for a large power plant as the research subject,three test piles in the post-grouting bored pile test area are respectively tested using the static load test method and high strain dynamic testing method.The testing results are comprehensively compared and analyzed against theoretical calculations.The results show that compared to the high strain method,the static load test provides more direct and accurate detection results,offering a truer reflection of the actual bearing capacity of the pile foundation.However,the implementation of the static load test is time-consuming and comes with relatively higher economic costs.Both the static load test and high strain method yielded measured characteristic values of bearing capacity that exceeded the standard characteristic values set during design,meeting design requirements.The bearing capacity test results obtained from both methods corresponded with the results calculated by theoretical formulas;however,the characteristic value of bearing capacity obtained by the high strain method is smaller than that derived from the static load test.With its efficient and economical characteristics,the high strain method can serve as an effective supplement to the static load test in the field of pile foundation bearing capacity testing.The outcomes of this study can provide reference and guidance for pile foundation testing in similar engineering projects.

关 键 词：桩基检测 静载试验 高应变法 承载力 沉降量 

分 类 号：TU473.16[建筑科学—结构工程]