采用三次样条插值数字化压缩e—p曲线  

On adoption of digitalized compression e—p curve cubic spline interpolation

作　　者：杨兆兵[1] 刘俊[1] 夏继宗[1] 

机构地区：[1]常州市规划设计院,江苏常州213003

出　　处：《山西建筑》2014年第35期90-91,共2页Shanxi Architecture

摘　　要：采用对压缩曲线(e—p曲线)进行三次样条插值拟合,研究发现该方法在节点上拟合的相对误差是零,并根据实验数据对拟合曲线的精度进行验证,通过三次样条插值能获取任意压力下的孔隙比e,从而精确得到任意压力段对应的土层压缩模量Es。The paper adopts the cubic spline interpolation matching for the compressive e—p curve,researches the relative error for the joint matching with the method is zero,proves the accuracy of the matching curve according to the experimental data,obtains the air space ratio e un-der any pressure with the cubic spline interpolation,so as to conclude the according layer compression module Es at any pressure section.

关 键 词：压缩模量Es 压缩试验 三次样条插值 MATLAB 

分 类 号：O241.3[理学—计算数学]