Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer
Dynamic resistance, which can be used to express strength in the unit of stress and improve the reliability of the dynamic cone penetration test (<i>DCPT</i>), has been estimated by numerous methods. This study aims to compare different dynamic resistance estimation methods by using an i...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/9/3085 |
| _version_ | 1797535893385379840 |
|---|---|
| author | Sang Yeob Kim Jong-Sub Lee Dong-Ju Kim Yong-Hoon Byun |
| author_facet | Sang Yeob Kim Jong-Sub Lee Dong-Ju Kim Yong-Hoon Byun |
| author_sort | Sang Yeob Kim |
| collection | DOAJ |
| description | Dynamic resistance, which can be used to express strength in the unit of stress and improve the reliability of the dynamic cone penetration test (<i>DCPT</i>), has been estimated by numerous methods. This study aims to compare different dynamic resistance estimation methods by using an instrumented dynamic cone penetrometer (<i>IDCP</i>). DCPTs are conducted using a standard dynamic cone penetrometer (<i>DCP</i>) and <i>IDCP</i> in the laboratory and field. Dynamic responses are obtained from the strain gauges and an accelerometer installed at the cone tip of the <i>IDCP</i>. The test results show that dynamic resistance is more efficient in distinguishing profiles than the dynamic cone penetration index. Among the methods to estimate the dynamic resistance at the cone tip, the force-velocity integration method and force integration method are more related to the conventional dynamic resistance considering the potential energy of the hammer than the force squared integration method. Additionally, the dynamic resistance estimated for a longer time period is more reliable, particularly for small driving rod lengths. Regarding the limitation of the dynamic response from an accelerometer in a previous study, the force-based dynamic resistance estimated for a longer time period can be used as the most reliable approach for further soil strength characterization. |
| first_indexed | 2024-03-10T11:51:50Z |
| format | Article |
| id | doaj.art-21d5ca1cc4ff424196b3f1bc655afae5 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T11:51:50Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-21d5ca1cc4ff424196b3f1bc655afae52023-11-21T17:39:10ZengMDPI AGSensors1424-82202021-04-01219308510.3390/s21093085Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone PenetrometerSang Yeob Kim0Jong-Sub Lee1Dong-Ju Kim2Yong-Hoon Byun3Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 205 North Mathews Avenue, Urbana, IL 61801, USASchool of Civil, Environmental and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, KoreaSchool of Civil, Environmental and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, KoreaSchool of Agricultural Civil & Bio-Industrial Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, KoreaDynamic resistance, which can be used to express strength in the unit of stress and improve the reliability of the dynamic cone penetration test (<i>DCPT</i>), has been estimated by numerous methods. This study aims to compare different dynamic resistance estimation methods by using an instrumented dynamic cone penetrometer (<i>IDCP</i>). DCPTs are conducted using a standard dynamic cone penetrometer (<i>DCP</i>) and <i>IDCP</i> in the laboratory and field. Dynamic responses are obtained from the strain gauges and an accelerometer installed at the cone tip of the <i>IDCP</i>. The test results show that dynamic resistance is more efficient in distinguishing profiles than the dynamic cone penetration index. Among the methods to estimate the dynamic resistance at the cone tip, the force-velocity integration method and force integration method are more related to the conventional dynamic resistance considering the potential energy of the hammer than the force squared integration method. Additionally, the dynamic resistance estimated for a longer time period is more reliable, particularly for small driving rod lengths. Regarding the limitation of the dynamic response from an accelerometer in a previous study, the force-based dynamic resistance estimated for a longer time period can be used as the most reliable approach for further soil strength characterization.https://www.mdpi.com/1424-8220/21/9/3085<i>DCP</i>dynamic penetrationdynamic resistanceintegration methodtransferred energy |
| spellingShingle | Sang Yeob Kim Jong-Sub Lee Dong-Ju Kim Yong-Hoon Byun Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer Sensors <i>DCP</i> dynamic penetration dynamic resistance integration method transferred energy |
| title | Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer |
| title_full | Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer |
| title_fullStr | Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer |
| title_full_unstemmed | Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer |
| title_short | Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer |
| title_sort | comparative study on estimation methods of dynamic resistance using dynamic cone penetrometer |
| topic | <i>DCP</i> dynamic penetration dynamic resistance integration method transferred energy |
| url | https://www.mdpi.com/1424-8220/21/9/3085 |
| work_keys_str_mv | AT sangyeobkim comparativestudyonestimationmethodsofdynamicresistanceusingdynamicconepenetrometer AT jongsublee comparativestudyonestimationmethodsofdynamicresistanceusingdynamicconepenetrometer AT dongjukim comparativestudyonestimationmethodsofdynamicresistanceusingdynamicconepenetrometer AT yonghoonbyun comparativestudyonestimationmethodsofdynamicresistanceusingdynamicconepenetrometer |