高应变动力试桩拟合法误差来源分析  

An Analysis on Error Sources in the Curve Match Method of High Strain Dynamic Testing on Pile

作　　者：董平[1] 胡德昭[1] 曹健[1] 

机构地区：[1]南京大学地球科学系,南京210093

出　　处：《南京大学学报（自然科学版）》2001年第1期104-113,共10页Journal of Nanjing University（Natural Science）

摘　　要：与传统的静荷载试验相比，高应变动力试桩拟合法是一种非常方便实用的分析技术，但该技术非常复杂，它的成功应用取决于诸多因素．通过剖析高应变动力试桩法的原理和拟合法的实质，结合工程实例，指出高应变动力试桩拟合法确定桩承载力不仅理论模型本身较静荷载试验存在差异，而且在数据处理过程中由于参数选择不同将引起承载力结果的误差．同时，人员素质也是准确应用该方法并给出合理结论的关键高应变动力试桩拟合法误差来源的分析，对该法在实际应用过程中避免或减少可能产生的失误将是十分有益的．Comparison with traditional static load test, the curve match method of high strain dynamic testing on pile much effective analysis technique, with many factors entering into successful test. With the examples, based on the principium of high strain dynamic testing on pile and the essence of the curve match, this paper shows that there are some disparities on high strain model to determine load capacity of pile campared with static load test, that some errors will arrive when we choose variable parameters in indoor data handling, that the engineer also is key to applying the method in the correct way and interpreting results reasonably. The analysis of error sources in the curve match of high strain dynamic testing on pile has a certain significance in avoiding or reducing potential misplay.

关 键 词：曲线拟合法 高应变动力试桩 静荷载试验 误差来源 

分 类 号：TU317.3[建筑科学—结构工程] TU312.1