摘要
介绍了简易贯入实验和塑性图的原理、应用和分析过程,通过国内外贯入实验和塑性图比较,总结了其优点以及推广的可能性。利用简易贯入实验数据可以简便、迅速地绘制出贯入曲线图,了解到灾害场地土层的大致分布,以及各土层土壤的软弱特性。从现场采取土壤试样进行室内密度、含水率、液、塑限实验,拟合液性界限和塑性指数的数据绘制出塑性图,可以直观地了解到土壤试样的物理性质。结合粒度实验的相关数据,准确地判断出土壤试样的工学分类。简易贯入实验和塑性图的使用,可以为地质灾害领域的实验研究提供多方位的参考价值。
The principle,application and analysis of Handy Hammer Dynamic Penetration Test as well as the plasticity chart are introduced in this paper.A comparison between the penetration tests and the plastic charts used mostly in developed countries and China is also made in the paper.The results summarize the advantages and convenience of the application of Handy Hammer Dynamic Penetration Test and plasticity chart in the practical projects.Penetration curve obtained from the Handy Hammer Dynamic Penetration Test results shows the general stratification of the soil layers as well as its weakness in the potential geological hazard areas.Samples were collected for the laboratory tests moisture content,unit weight and Atterberg Limits.Plasticity chart obtained from the test results indicates a better indication of both physical and mechanical properties of the soil samples.Along with results from the granularity analysis,a better engineering classification can be obtained.The application of the Handy Hammer Dynamic Penetration Test and the plasticity chart could results in a better understanding of the geological hazards.
出处
《土工基础》
2015年第1期120-123,共4页
Soil Engineering and Foundation
关键词
简易贯入实验
标准贯入实验
塑性图
地质灾害
Handy Hammer Dynamic Penetration Tests
Standard Penetration Tests
Plasticity Charts
Geological Hazards
