Application of RI-Cone to Foundation Engineering

通过在不同环境中的使用，验证了RI圆锥贯入仪的有效性。通过这些贯入试验获得的数据被有效地应用于基础工程中。主要结论如下：1.这些新研制的触探仪已经在各种土壤环境中得到了有效的应用，如高氯化物含量的复垦土地、含水率很高的场地的正常粘土沉积。土壤中氯离子的存在可能会导致低估土壤的自然含水率。因此，在海洋环境或海洋沉积物中使用RI圆锥时必须小心。通过这些圆锥贯入仪，可以连续监测土体改良工作。这是通过检查施工现场的空隙比和密度分布来完成的。从这些圆锥渗透仪获得的数据可以提供有关粘土地基条件的有用信息。我们可以将这组信息作为有限元分析的输入。在上述结果的鼓舞下，我们相信，通过在施工过程的不同阶段部署这些圆锥贯入仪，执业工程师可以建立一个数据库，用于计算粘土地基的沉降。

The effectiveness of RI cone penetrometers has been demonstrated by using it in different environments. And the data obtained through these penetration tests are effectively employed in the foundation engineering works. The main conclusions derived are as follows :1. These newly developed cone penetrometers have been used effectively in various soil environments, such as the reclaimed land with high cloride content, normal clay deposit to site characterized by very high water content.2. The presence of chloride ions in the soil can lead to the underestimation of the natural water content of the soil. Therefore care must be taken when the RI cone is employed in the marine environment or the marine deposits.3. Soil improvement work can be continuously monitored through these cone penetrometers. This is done by checking the void ratio and the density profiles at the construction site.4. The data obtained from these cone penetrometers can offer the useful information about the conditions of a clay foundation. We can use this set of information as input for finite-element analyzes.5. Encouraged by the results obtained above, we believe that by deploying these cone penetrometers at various stages of construction process, practicing engineers can build-up a data base which can be used in calculating the settlement of a clay foundation.