砾石土击实试验方法探讨  

Study of compaction test of gravel soil using polynomial fitting method

作　　者：边晓明 陈卫烈 刘小翠 

机构地区：[1]葛洲坝集团试验检测有限公司,湖北宜昌443000

出　　处：《人民长江》2011年第15期28-31,共4页Yangtze River

摘　　要：砾石土的压实性能主要受土料自身性质以及现场各种碾压参数的影响,特别是砾石土在重型碾压或击实后,其工程性质主要因粗粒含量的变化而不同。为探究砾石土圧实性能的变化规律,结合双江口堆石坝砾石土心墙不同掺合料的压实性能试验研究,运用多项式拟合法得出最大干密度与粗粒料含量、最佳含水率与粗粒料含量的相关方程。在已知粗粒料含量的条件下,据此可计算出砾石土的最大干密度及最优含水率,从而为今后类似材料的工程运用提供可借鉴的依据。The compacted performance of gravelly soil is mainly affected by soil material properties and the various in-situ rolling parameters.Especially after heavy rolling and compaction,the engineering properties of gravelly soil is mainly affected by coarse aggregate contents.In order to study the variation law of the compacted performance of gravelly soil,combining with the test research on the compaction performances of the gravelly soil core of Shuangjiangkou rock fill dam with different admixtures and by using polynomial fitting method,the equations of the maximum dry density and the optimum moisture with the coarse aggregate contents were obtained.When the content of coarse aggregate was known,the maximum dry density and the optimum moisture could be calculated.

关 键 词：砾石土击实 多项式拟合法 最大干密度 最优含水量 

分 类 号：TU411[建筑科学—岩土工程]