Development of a Piezocone for Use in Centrifuge Testing and Validation of Methods for Interpreting Cone Penetration Data

开发用于离心机测试的压电锥体以及解释锥体穿透数据的方法的验证

• 批准号: 9300599
• 负责人: Hon-Yim Ko
• 金额: $ 2万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1994-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9300599&HistoricalAwards=false
• 关键词: Development; Piezocone; Use; Centrifuge; Testing

The objective of this research is to conduct piezocone penetration tests in the centrifuge on soil samples which are prepared to achieve certain strength and stiffness profiles. The results of cone penetration tests can be compared with the reference soil properties which are measured by conventional triaxial testing on specimens that are either prepared to the same conditions as the centrifuge soil sample, or are obtained by coring from the centrifuge sample after the penetration test. In addition, since the undrained shear strength of soil is not a unique parameter and depends on the type of test used to measure it, it will be adopted that the undrained shear strength measured by the shear vane will be used as the reference in this research. Thus, simultaneously with cone penetration tests on a centrifuge sample, the undrained shear strength profile of the sample will be measured by means of a miniature shear vane, so that the profiles of cone penetration resistance and of shear strength can be compared directly.

本研究的目的是进行压电锥 土样离心贯入试验 其被制备成达到一定的强度， 刚度曲线静力触探结果 测试可以与参考土壤特性进行比较 通过常规三轴试验测量 在标本上， 条件作为离心土壤样品，或通过 在贯入试验后从离心样品中取芯。 此外，由于土壤的不排水抗剪强度 不是唯一参数，取决于所用测试的类型 为了测量它，将采用不排水剪切 由剪切叶片测得的强度将用作 在这项研究中参考。因此，同时与 离心试样的锥入度试验， 试样的不排水抗剪强度剖面将 通过微型剪切叶片进行测量，因此 锥贯入阻力和 剪切强度可以直接比较。