Trial Construction of Mini-Triaxial Apparatus and Method for Determining Mechanical Parameters of Seabed Clay Deposits

海底粘土沉积物力学参数测定微型三轴装置及方法的试制

基本信息

批准号：
01850115
负责人：
MATSUI Tamotsu
金额：
$ 3.39万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B).
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

A series of numerical analysis was performed in the case where the size of triaxial test specimen is varied, in order to investigate the effect of the size of triaxial test specimen on the results of triaxial test analytically. As the results, it is confirmed that there is no effect of the size of triaxial test specimen on the shear characteristics. It is confirmed that triaxial test specimen is sheared homogeneously if the friction between the edge of the specimen and the loading plate could be excluded.Mini-Triaxial test apparatus and Mini-Triaxial test apparatus for medium pressure was made on an experimental basis. Mini-Triaxial test apparatus is mainly used for alluvial clays and Mini-Triaxial test apparatus for medium pressure is used for diluvial clays deep under the ground. Common feature of both apparatus is that the size of these specimen, phi22.6mmXh45mm, is smaller than the size of specimen usually used.A series of triaxial test was performed in the case where the test spec … More imen is varied as phi50mmXh120mm, phi35mmXh80mm and phi22.6mmX45mm, in order to investigate the effect of the size of triaxial test specimen on the results of triaxial test experimentally. So that, it is confirmed that there is no effect of the size of triaxial test specimen on the shear characteristics on an experimental.At first year of Heisei, a series of shear test was performed for undisturbed alluvial clays and upper diluvial clays with mini-triaxial apparatus. As the results, it is confirmed that even if the samples are picked in the same clay layer but at the different position, the mechanical characteristics of clays is not same, and that even if the samples are picked at the same position but at the different depth, the mechanical characteristics of clays is not same.At second year of Heisei, a series of shear test was performed for undisturbed diluvial clays with mini-triaxial apparatus for medium pressure. Some parameters of the constitutive equation for clays were tried to determine using the experimental results. Less

为了研究三轴测试样品大小对分析三轴测试结果的影响，在三轴测试样本的大小之间进行了一系列数值分析。作为结果，确认三轴测试标本的大小对剪切特性没有影响。确认，如果可以排除样品边缘和装载板之间的摩擦之间的摩擦，则可以排除三轴测试样品。粘土在地下深处。这两种设备的共同特征是这些样品的大小PHI22.6MMXH45mm小于通常使用的样品的大小。在测试规格上更加易变的情况下，进行了一系列三轴测试，如Phi50mmxh120mm而变化，PHI35MMXH80MM和PHI22.6MMX2.6MMX2.6MMMX45MM，在trii和phi22.6mmmx45mm上进行了调查。三轴测试的结果实验。因此，可以证实，三轴测试标本的大小对实验性的剪切特性没有影响。在海塞（Heisei）的第一年中，对不受干扰的冲积粘土和带有迷你三方式仪器的不受干扰的冲积粘土和上乳腺粘土进行了一系列剪切测试。如结果，可以证实，即使样品是在相同的粘土层中选择的，但在不同的位置，粘土的机械特征也不相同，并且即使在相同的位置选择了样品，但在不同的位置下，粘土的机械特征也不相同。在Heisei的第二年，Heisei，Heisei的第二年，一系列的剪切测试对杂物进行了cliedial的杂物。尝试使用实验结果来确定粘土的本构方程的某些参数。较少的