基于计算机求解土的先期固结压力  

Solving Pre-consolidation Pressure of Soil Based on Computer

作　　者：彭静[1] 张胜军[1] 何娇[1] 蒋晓娟[1] 周蕙娴 

机构地区：[1]水利部长江勘测技术研究所,湖北武汉430011

出　　处：《资源环境与工程》2015年第2期202-205,共4页Resources Environment & Engineering

摘　　要：在研究卡萨格兰德(Casagrande)经验作图法的基础上,采用等跨度圆弧求圆半径及拉格朗日多项式插值法求取最小曲率半径Rmin点的计算思路,通过Matlab语言编制相应的计算程序求取先期固结压力pc值。结合膨胀土算例表明该方法对试验数据具有较好的适应性,且操作简便,能以图形化方式显示确定先期固结压力,避免人为误差,计算速度快,还可将研究成果拓展到其他需要做大量数据统计、图形绘制和分析的应用领域中。On the basis of research the Casagrande＇s experience graphic method,using the same span arc to find the circle radius and using Lagrange polynomial interpolation method to calculate the minimum curvature radius point,then using Matlab language to compile the corresponding calculation program to calculate the pre-consolidation pressure value.Combined with expansive soils examples show that the method has better adaptability to the test data,and easy to operate,and it also can be displayed graphically to determine pre-consolidation pressure,in the same time it can avoid human error,and have high computing speed,the research results can also be extended to other application areas which needs a lot of statistics,graphing,and analysis.

关 键 词：先期固结压力 卡萨格兰德法 最小曲率半径 MATLAB语言 

分 类 号：TU432[建筑科学—岩土工程]