黄土击实试验曲线峰值点的数值方法  

Numerical Method on Peak Point in Loess Compaction Test

作　　者：杜瑞锋[1,2] 裴向军[1] 张晓超[1] 常志璐 崔雪婷[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]内蒙古建筑职业技术学院建筑工程学院,呼和浩特010070

出　　处：《实验室研究与探索》2017年第8期44-47,共4页Research and Exploration In Laboratory

基　　金：国家重点基础研究发展计划项目(2014CB744703)

摘　　要：击实试验是衡量实际施工中土体被压实或夯实到最优程度的室内指导性试验,对土木工程的抗压、抗剪、抗渗等性能有重要意义。在探讨击实试验中的密度、含水量、干密度在数学及土力学意义的空间图形关系基础上,应用数值分析原理并采用分段三次多项式插值方法,自编Matlab程序,有效、快捷地确定击实曲线峰值点以及绘制成果曲线,克服了应用"图解法"的不准确性和不方便性。该方法可应用于不同地区的黄土击实试验中,效果良好。In actual construction,compaction test is used to evaluate the tamping quality of soil and reach the optimal state,and is a laboratory experiment with significance to soil performance of compression,shear and penetration. The relations of spatial drawing and bulk density,water content and dry density in compaction test of civil engineering are researched respectively with viewpoints of mathematics and soil physics. A self-made program used Matlab is installed successfully on the platform,and it can fast deal with peak points and plot curve. The method gets better result than the diagrammatical method which is still used now,and is inaccuracy and inconvenience. The program is suitable to other soils（ such as clay and coarse-grained soil）,and is needed to develop more related research.

关 键 词：击实试验 图解法 峰值点 数值方法 

分 类 号：TU411.99[建筑科学—岩土工程]