Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves
Classical theoretical approaches to evaluate CPTU-based hydraulic conductivity gave the expression of a bilinear relation defined by KD-BqQt, for undrained and drained soils. In fact, a dividing line may be selected with a certain degree of subjectivity, and several undrained/drained points occur in...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/6656867 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849404099891560448 |
|---|---|
| author | Mingfei Zhang Liyuan Tong |
| author_facet | Mingfei Zhang Liyuan Tong |
| author_sort | Mingfei Zhang |
| collection | DOAJ |
| description | Classical theoretical approaches to evaluate CPTU-based hydraulic conductivity gave the expression of a bilinear relation defined by KD-BqQt, for undrained and drained soils. In fact, a dividing line may be selected with a certain degree of subjectivity, and several undrained/drained points occur in opposite sites, which may make us doubt the necessity of two intersecting lines to distinguish the undrained and drained soils. And a uniform and relatively simple curve including an arc, parabola, or ellipse correlation may be more suitable and accessible from a practical point of view. A database in the Yangtze Delta region has been collated to assess the three curves compared with the bilinear line. With the graphical and statistical analyses, the results indicate that the arc, parabola, and ellipse simplified curves could give better performance than the bilinear line. Through the statistical analyses and the number of variables, the overall best curve was the ellipse with only two variables, which is expected to improve the application scope and simplicity of hydraulic conductivity. |
| format | Article |
| id | doaj-art-91bda8f8488f48d5b975fe25fce0b071 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-91bda8f8488f48d5b975fe25fce0b0712025-08-20T03:37:06ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/66568676656867Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity CurvesMingfei Zhang0Liyuan Tong1Civil Engineering and Architecture Institute, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, ChinaInstitute of Geotechnical Engineering, Southeast University, Nanjing, Jiangsu, 210096, ChinaClassical theoretical approaches to evaluate CPTU-based hydraulic conductivity gave the expression of a bilinear relation defined by KD-BqQt, for undrained and drained soils. In fact, a dividing line may be selected with a certain degree of subjectivity, and several undrained/drained points occur in opposite sites, which may make us doubt the necessity of two intersecting lines to distinguish the undrained and drained soils. And a uniform and relatively simple curve including an arc, parabola, or ellipse correlation may be more suitable and accessible from a practical point of view. A database in the Yangtze Delta region has been collated to assess the three curves compared with the bilinear line. With the graphical and statistical analyses, the results indicate that the arc, parabola, and ellipse simplified curves could give better performance than the bilinear line. Through the statistical analyses and the number of variables, the overall best curve was the ellipse with only two variables, which is expected to improve the application scope and simplicity of hydraulic conductivity.http://dx.doi.org/10.1155/2021/6656867 |
| spellingShingle | Mingfei Zhang Liyuan Tong Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves Geofluids |
| title | Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves |
| title_full | Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves |
| title_fullStr | Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves |
| title_full_unstemmed | Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves |
| title_short | Statistical Assessment of Simplified CPTU-Based Hydraulic Conductivity Curves |
| title_sort | statistical assessment of simplified cptu based hydraulic conductivity curves |
| url | http://dx.doi.org/10.1155/2021/6656867 |
| work_keys_str_mv | AT mingfeizhang statisticalassessmentofsimplifiedcptubasedhydraulicconductivitycurves AT liyuantong statisticalassessmentofsimplifiedcptubasedhydraulicconductivitycurves |