土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (5): 825-829.

• 测试技术 • 上一篇    下一篇

基于Origin最小二乘法和解析法的土工液塑限联合测定试验数据处理

张雪锋1,2，李 忠1，陈 诚1,2，徐梓斐1,2   

  1. （1.黄河水利职业技术学院 水利工程学院，河南开封 475004；2.河南省小流域生态水利工程技术研究中心，河南开封 475004）
  • 收稿日期:2022-11-17 修回日期:2022-12-04 出版日期:2023-10-31 发布日期:2023-10-26
  • 作者简介:张雪锋（1982-），男，讲师，研究方向为土的本构关系及其工程应用。
  • 基金资助:
    河南省自然科学基金面上项目（222300420497）

Atterberg Limits Tests Data Processing by Origin Based Least Square and Analytical Methods

ZHANG Xuefeng1,2, LI Zhong1, CHEN Cheng1,2， XU Zifei1,2   

  1. (1.Yellow River Conservancy Technical Institute, Kaifeng 475004；
    2.Henan Small Watershed Ecological Water Conservancy Engineering Technology Research Center, Kaifeng 475004)
  • Received:2022-11-17 Revised:2022-12-04 Online:2023-10-31 Published:2023-10-26

摘要： 针对土工液塑限联合测定试验数据处理和成果表现的不足，提出基于Origin软件的最小二乘法和解析法处理液塑限联合测定试验数据的方法，并以开封某地粉质粘土为例进行验证。研究结果表明，两种方法均可快速绘制图形并自动提取17 mm液限、10 mm液限与塑限。基于Origin最小二乘法，推导的Adj.R-Square值0.978 5可快速判断试验数据是否合格，不需要计算圆锥下沉深度为2 mm处相应的两个含水率的差值，在批量处理试验数据时具备一定的优势。与数学解析法、Excel与AutoCAD软件等处理方法相比，Origin解析法更简单快速，流程明确，便于在实际工作中推广应用。

关键词: Origin, 最小二乘法, 解析法, 液塑限, Level Crossing

Abstract: In view of the shortcomings of the data processing of the combined Atterberg Limits test results, the least square method and the analytical method based on the Origin commercial software are proposed to process the test data. The silty clay samples in Kaifeng are used for the data verification. The results show that the two methods can quickly draw graphs and automatically extract the 17 mm liquid limit, the 10 mm liquid limit and the plastic limit. For the Origin least square method, the derived Adj.R-Square value of 0.9785 can quickly determine whether the test data is acceptable. It is not necessary to calculate the difference between the corresponding two water contents at the cone penetrating depth of 2 mm, which has the advantages in batch processing of test data. Compared with the mathematical analytic method, Excel and AutoCAD software, the Origin analytic method is simpler and faster, with clear process, which is easy to be popularized and applied in the commercial laboratory tests.

Key words: Origin, Least Square Method, Analytical Method, Atterberg Limits, Level Crossing

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