最优含水率与粗粒含量关系探究
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摘要
针对粗粒土特点,对其室内击实试验原理做了简单论述。同时就当前的研究热点,详细分析了影响粗粒土击实特性的内外部因素,包括颗粒级配与材料性质,制样方式与击实方法等。并根据五位研究者的试验数据,详细分析了粗颗粒的加入对土样的击实效应作用规律。在总结前人的研究成果的基础上,分析得到以下结论:(1)粗颗粒的粒径大小不是影响粗粒土最优含水率的关键因素,而粗粒含量才是重要的影响指标。(2)粗粒土的最优含水率与粗粒含量之间存在较好的线性关系;不仅细颗粒与其含水率之间是线性关系,且粗颗粒与其含水率之间也呈线性关系变化。(3)对线性关系进行了指标化处理,给出了粗粒土最优含水率与粗粒含量之间的定量关系,为后续提出普适性公式打好基础。
This paper briefly introduces the Proctor Test principles on granular soils.Factors that are potentially affecting the laboratory compaction test results,such as,gradation,material properties,sample preparation methods and methods of compaction,are evaluated in detail.The effect of coarse gain soil content in the granular soil samples on the Proctor Test results are summarized from test results from five different sources.Combined from the rest results as well as the literature review,the following conclusions can be made:1)The critical factor that affecting the optimum moisture content is not the size of the coarse grains but the content of the coarse grain soils;2)linear relationships are existed between the optimum moisture content and coarse grain coarse,the optimum moisture content and fine grain content;3)the linear relationships are formulized.
This paper briefly introduces the Proctor Test principles on granular soils.Factors that are potentially affecting the laboratory compaction test results,such as,gradation,material properties,sample preparation methods and methods of compaction,are evaluated in detail.The effect of coarse gain soil content in the granular soil samples on the Proctor Test results are summarized from test results from five different sources.Combined from the rest results as well as the literature review,the following conclusions can be made:1)The critical factor that affecting the optimum moisture content is not the size of the coarse grains but the content of the coarse grain soils;2)linear relationships are existed between the optimum moisture content and coarse grain coarse,the optimum moisture content and fine grain content;3)the linear relationships are formulized.
引文
[1]郭庆国.粗粒土的工程特性及应用[M].黄河水利出版社,1999.
[2]Marsal R J.Large scale testing of rockfill materials[J].Journal of the Soil Mechanics&Foundations Division,1900,94:1042-1047.
[3]Lee K L,Farhoomand I.Compressibility And Crushing Of Granular Soil In Anisotropic Triaxial.[J].Canadian Geotechnical Journal,2011,4(1):68-86.
[4]傅华,凌华,蔡正银.粗颗粒土颗粒破碎影响因素试验研究[J].河海大学学报自然科学版,2009,37(1):75-79.
[5]周志军,南浩林,孟梅.土石混合料大型击实试验研究[J].路基工程,2007(5):95-96.
[6]王刚,李志农,冯立群.粗粒土击实试验研究[J].交通标准化,2011(20):61-66.
[7]武明.土石混合非均质填料压实特性试验研究[J].公路,1997(1):40-42.
[8]朱崇辉,王增红,希罗科夫B.H.单点击实法击实试验研究[J].岩土力学,2012,33(1):60-64.
[9]刘丽萍,折学森.土石混合料压实特性试验研究[J].岩石力学与工程学报,2006,25(1):206-210.
[10]冯瑞玲,陶建利,赵占厂,等.含粗粒的细粒土的压实特性研究[J].岩土力学,2010,31(2):382-386.
[11]张志权,王志勇.最大干密度和最优含水率的准确性探讨[J].长安大学学报自然科学版,2004,21(2):7-10.
[12]杨凌云,王晓谋,尚涛.粘性粗粒土的击实试验研究[J].路基工程,2009,2009(4):84-86.
[13]朱宏祥,赵小兵.粗粒土最大干密度试验研究[J].西部探矿工程,2009,21(1):46-48.
[14]石熊,张家生,刘蓓,等.高速铁路粗粒土填料级配改良试验[J].中南大学学报(自然科学版),2014(11):3964-3969.
[15]杜俊,侯克鹏,梁维,等.粗粒土压实特性及颗粒破碎分形特征试验研究[J].岩土力学,2013,34(s1):155-161.
[16]周志军,南浩林,张熠.土石混合料路用工程力学性质试验[J].长安大学学报自然科学版,2007,27(5):11-15.
[17]刘永红.土石混合料压实特性室内试验研究[J].公路与汽运,2010(5):79-81.
[2]Marsal R J.Large scale testing of rockfill materials[J].Journal of the Soil Mechanics&Foundations Division,1900,94:1042-1047.
[3]Lee K L,Farhoomand I.Compressibility And Crushing Of Granular Soil In Anisotropic Triaxial.[J].Canadian Geotechnical Journal,2011,4(1):68-86.
[4]傅华,凌华,蔡正银.粗颗粒土颗粒破碎影响因素试验研究[J].河海大学学报自然科学版,2009,37(1):75-79.
[5]周志军,南浩林,孟梅.土石混合料大型击实试验研究[J].路基工程,2007(5):95-96.
[6]王刚,李志农,冯立群.粗粒土击实试验研究[J].交通标准化,2011(20):61-66.
[7]武明.土石混合非均质填料压实特性试验研究[J].公路,1997(1):40-42.
[8]朱崇辉,王增红,希罗科夫B.H.单点击实法击实试验研究[J].岩土力学,2012,33(1):60-64.
[9]刘丽萍,折学森.土石混合料压实特性试验研究[J].岩石力学与工程学报,2006,25(1):206-210.
[10]冯瑞玲,陶建利,赵占厂,等.含粗粒的细粒土的压实特性研究[J].岩土力学,2010,31(2):382-386.
[11]张志权,王志勇.最大干密度和最优含水率的准确性探讨[J].长安大学学报自然科学版,2004,21(2):7-10.
[12]杨凌云,王晓谋,尚涛.粘性粗粒土的击实试验研究[J].路基工程,2009,2009(4):84-86.
[13]朱宏祥,赵小兵.粗粒土最大干密度试验研究[J].西部探矿工程,2009,21(1):46-48.
[14]石熊,张家生,刘蓓,等.高速铁路粗粒土填料级配改良试验[J].中南大学学报(自然科学版),2014(11):3964-3969.
[15]杜俊,侯克鹏,梁维,等.粗粒土压实特性及颗粒破碎分形特征试验研究[J].岩土力学,2013,34(s1):155-161.
[16]周志军,南浩林,张熠.土石混合料路用工程力学性质试验[J].长安大学学报自然科学版,2007,27(5):11-15.
[17]刘永红.土石混合料压实特性室内试验研究[J].公路与汽运,2010(5):79-81.