含砂量对黏土与结构接触面剪切性质的影响
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
通过土体内部、土与钢以及土与混凝土的剪切试验,研究分析了土体含砂量对抗剪强度、摩擦角和黏聚力的影响。结果表明:土体内部、土与结构接触面的抗剪强度和摩擦角均随含砂量的增大而增大;土体内部的黏聚力随着含砂量的增大而减小,而土与结构接触面的黏聚力却随着含砂量的增大而增大。含砂量对土体的内摩擦角影响较大,而对土与钢和土与混凝土这两种类型的接触面影响较小。在试验参数范围内,对于任意含砂量和垂直应力,土体内部的抗剪强度、内摩擦角和黏聚力均大于土与钢和土与混凝土之间的抗剪强度、摩擦角和黏聚力。
The shearing tests on internal soil mass,soil-steel,and soil-cement were carried out to explore the influence of sand content of soil mass on shear strength,friction angle and cohesion. The results show that the shear strength and friction angle inside the soil mass and on the soil-structure interface increase with the sand content,and as the sand content increases,the cohesion inside the soil mass reduces and that on the soilstructure interface enhances. The sand content has major impact on the internal friction angle of the soil mass,but minor effect on the interface between soil and steel or soil and cement. Within the range of the test parameters,and for any sand content and vertical stress, the shear strength, internal friction angle and cohesion inside the soil mass are larger than those on the interface between soil and steel or soil and cement.
引文
[1]陈国兴,谢君斐,张克绪.土与结构材料界面性状的研究概况[J].世界地震工程,1994(4):1-9.
    [2]Uesugi M,Kishida H,Tsubakihara Y.Behavior of sand particles in sandsteel friction[J].Soils and Foundations,1988,28(1):107-118.
    [3]胡黎明,濮家骝.土与结构物接触面物理力学特性试验研究[J].岩土工程学报,2001,23(4):431-435.Hu L M,Pu J L.Experimental study on mechanical characteristics of soilstructure interface[J].Chinese Journal of Geotechnical Engineering,2001,23(4):431-435.
    [4]杨有莲,朱俊高,余挺,等.土与结构接触面力学特性环剪试验研究[J].岩土力学,2009,30(11):3256-3260.Yang Y L,Zhu J G,Yu T,et al.Experimental study of mechanical behaviour of soil-structure interface by ring shear test[J].Rock and Soil Mechanics,2009,30(11):3256-3260.
    [5]Yin Z Z,Zhu H,Xu G H.A study of deformation in the interface between soil and concrete[J].Computers and Geotechnics,1995,17(1):75-92.
    [6]Potyondy J G.Skin friction between various soils and construction materials[J].Géotechinque,1961,11(4):339-353.
    [7]刘学增,朱合华.上海典型土层与混凝土接触特性的试验研究[J].同济大学学报,2004,32(5):601-606.Liu X Z,Zhu H H.Experiment on interaction between typical soils in Shanghai and concrete[J].Journal of Tongji University,2004,32(5):601-606.
    [8]卢廷浩,王伟,王晓妮.土与结构接触界面改进直剪试验研究[J].沈阳建筑大学学报:自然科学版,2006,22(1):82-85.Lu T H,Wang W,Wang X N.Experimental study on soil-structure contact surface behavior by improved direct shear tests[J].Journal of Shenyang Jianzhu University:Natural Science Edition,2006,22(1):82-85.
    [9]侍倩.土工试验与测试技术[M].北京:化学工业出版社,2005:176.
    [10]高华东.土工室内试验教程[M].北京:北京工业大学出版社,2010:93.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心