Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta
Soil dilatancy and partial drainage have great influence on the consolidation coefficient assessment of silty soils with clay content of less than 30% in the Yellow River Delta using the CPTu. This paper discussed the effect of soil dilatancy and partial drainage on the pore pressure response and di...
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MDPI AG
2022-02-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/10/2/255 |
| _version_ | 1827654390856548352 |
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| author | Yan Zhang Xiuli Feng Shenggui Deng Chenhao Ding Tao Liu |
| author_facet | Yan Zhang Xiuli Feng Shenggui Deng Chenhao Ding Tao Liu |
| author_sort | Yan Zhang |
| collection | DOAJ |
| description | Soil dilatancy and partial drainage have great influence on the consolidation coefficient assessment of silty soils with clay content of less than 30% in the Yellow River Delta using the CPTu. This paper discussed the effect of soil dilatancy and partial drainage on the pore pressure response and dissipation of piezocone test in shallow silty soil of the Yellow River Delta through variable penetration rate tests in a pressure chamber and a series of supplementary soil element tests. The results show that the pore pressure dissipation curve is affected by soil type and degree of consolidation. The soil dilatancy is the key factor affecting consolidation coefficient inversion of shallow silt and silty clays. The initial pore pressure is negative and the pore pressure increases to <i>u</i><sub>max</sub> first, but the <i>u</i><sub>max</sub> value is very small in the Yellow River Delta silt. The inversion method used for shear contractile soil cannot be used to invert the mechanical properties of shallow silty soil directly, and a new consolidation curve normalization method is proposed. This paper provides a reference for the consolidation coefficient inversion of CPTu data in the Yellow River Delta area. |
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| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T21:39:31Z |
| publishDate | 2022-02-01 |
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| spelling | doaj.art-bf5825191fe44185b62bab2f895510f62023-11-23T20:36:01ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-02-0110225510.3390/jmse10020255Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River DeltaYan Zhang0Xiuli Feng1Shenggui Deng2Chenhao Ding3Tao Liu4College of Marine Geosciences, Ocean University of China, Qingdao 266100, ChinaCollege of Marine Geosciences, Ocean University of China, Qingdao 266100, ChinaCollege of Marine Geosciences, Ocean University of China, Qingdao 266100, ChinaCollege of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, ChinaCollege of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, ChinaSoil dilatancy and partial drainage have great influence on the consolidation coefficient assessment of silty soils with clay content of less than 30% in the Yellow River Delta using the CPTu. This paper discussed the effect of soil dilatancy and partial drainage on the pore pressure response and dissipation of piezocone test in shallow silty soil of the Yellow River Delta through variable penetration rate tests in a pressure chamber and a series of supplementary soil element tests. The results show that the pore pressure dissipation curve is affected by soil type and degree of consolidation. The soil dilatancy is the key factor affecting consolidation coefficient inversion of shallow silt and silty clays. The initial pore pressure is negative and the pore pressure increases to <i>u</i><sub>max</sub> first, but the <i>u</i><sub>max</sub> value is very small in the Yellow River Delta silt. The inversion method used for shear contractile soil cannot be used to invert the mechanical properties of shallow silty soil directly, and a new consolidation curve normalization method is proposed. This paper provides a reference for the consolidation coefficient inversion of CPTu data in the Yellow River Delta area.https://www.mdpi.com/2077-1312/10/2/255dilatant silty soilspartial drainageshallow soilyellow river deltaCPTu |
| spellingShingle | Yan Zhang Xiuli Feng Shenggui Deng Chenhao Ding Tao Liu Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta Journal of Marine Science and Engineering dilatant silty soils partial drainage shallow soil yellow river delta CPTu |
| title | Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta |
| title_full | Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta |
| title_fullStr | Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta |
| title_full_unstemmed | Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta |
| title_short | Pore Pressure Response and Dissipation of Piezocone Test in Shallow Silty Soil of Yellow River Delta |
| title_sort | pore pressure response and dissipation of piezocone test in shallow silty soil of yellow river delta |
| topic | dilatant silty soils partial drainage shallow soil yellow river delta CPTu |
| url | https://www.mdpi.com/2077-1312/10/2/255 |
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