摘要
叙述了界限含水率试验的基本原理,总结了直接直线拟合法、规范作图法、公式法的不足,建立了先用公式法确认塑限偏差<2%,再用最小二乘法数据拟合求解液塑限的计算方法。在此基础上,提出了控制平行试验的锥沉量偏差大小的试验优化方法,并给出了控制偏差的大小。
This paper describes the basic principle of limit water content, summarizes the deficiency of direct straight line fitting method, standardized graphing method and formula method and establishes the calculation method that first confirms plastic limit deviation less than 2% with equation and then seeks for liquid and plas- tic limit through data fitting with least square method. Based on this, a method for test optimization is presented to control cone penetration depth deviation in parallel test and gives the value of control deviation.
出处
《路基工程》
2010年第1期29-31,共3页
Subgrade Engineering
基金
河南省科技厅项目(0524500008)
华东交通大学博士科研启动基金项目(01306622)
关键词
界限含水率
锥沉量
控制偏差
最小二乘法
试验优化
limit water content
cone penetration depth
control deviation
least square method
test optimization
