Details
| Original language | English |
|---|---|
| Number of pages | 19 |
| Journal | Georisk |
| Early online date | 11 Nov 2024 |
| Publication status | E-pub ahead of print - 11 Nov 2024 |
Abstract
This paper characterised the spatial variability of Singapore Kallang Formation Marine Clays using piezocone penetration test (CPT) data from the Marina South area. Both vertical and horizontal scales of fluctuation in undrained shear strength for two distinct clay units, Upper Marine Clay (UMC) and Lower Marine Clay (LMC), are calibrated for autocorrelation and semi-variogram functions. The Marina South area was reclaimed from the sea using fills placed in three phases from 1970s to 1990s and remains underconsolidated up to date. This study identified variations in the degree of consolidation across the area, which has led to variations in the undrained shear strength in this area. However, the variations in the degree of consolidation were found to have no noticeable influence on the vertical and horizontal scales of fluctuation of either UMC or LMC unit. The vertical scales of fluctuation of UMC and LMC units are (Formula presented.) and (Formula presented.), respectively, while the horizontal scales of fluctuations are (Formula presented.) and (Formula presented.), respectively. The present study contributes to the database of the statistical and spatial variability of marine clays and can provide useful guidance for assessing reliability of excavations and foundations in Marina South as well as other areas with similar geological settings.
Keywords
- cone penetration test, Marine clay, scale of fluctuation, spatial variability, statistic analysis, stochastic models
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
- Earth and Planetary Sciences(all)
- Geology
Sustainable Development Goals
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In: Georisk, 11.11.2024.
Research output: Contribution to journal › Comment/debate › Research › peer review
}
TY - JOUR
T1 - Characterisation of the spatial variability of underconsolidated Singapore Marine Clay using random field theory
AU - Wang, Ze Zhou
AU - Guo, Xiangfeng
AU - Hu, Yue
N1 - Publisher Copyright: © 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2024/11/11
Y1 - 2024/11/11
N2 - This paper characterised the spatial variability of Singapore Kallang Formation Marine Clays using piezocone penetration test (CPT) data from the Marina South area. Both vertical and horizontal scales of fluctuation in undrained shear strength for two distinct clay units, Upper Marine Clay (UMC) and Lower Marine Clay (LMC), are calibrated for autocorrelation and semi-variogram functions. The Marina South area was reclaimed from the sea using fills placed in three phases from 1970s to 1990s and remains underconsolidated up to date. This study identified variations in the degree of consolidation across the area, which has led to variations in the undrained shear strength in this area. However, the variations in the degree of consolidation were found to have no noticeable influence on the vertical and horizontal scales of fluctuation of either UMC or LMC unit. The vertical scales of fluctuation of UMC and LMC units are (Formula presented.) and (Formula presented.), respectively, while the horizontal scales of fluctuations are (Formula presented.) and (Formula presented.), respectively. The present study contributes to the database of the statistical and spatial variability of marine clays and can provide useful guidance for assessing reliability of excavations and foundations in Marina South as well as other areas with similar geological settings.
AB - This paper characterised the spatial variability of Singapore Kallang Formation Marine Clays using piezocone penetration test (CPT) data from the Marina South area. Both vertical and horizontal scales of fluctuation in undrained shear strength for two distinct clay units, Upper Marine Clay (UMC) and Lower Marine Clay (LMC), are calibrated for autocorrelation and semi-variogram functions. The Marina South area was reclaimed from the sea using fills placed in three phases from 1970s to 1990s and remains underconsolidated up to date. This study identified variations in the degree of consolidation across the area, which has led to variations in the undrained shear strength in this area. However, the variations in the degree of consolidation were found to have no noticeable influence on the vertical and horizontal scales of fluctuation of either UMC or LMC unit. The vertical scales of fluctuation of UMC and LMC units are (Formula presented.) and (Formula presented.), respectively, while the horizontal scales of fluctuations are (Formula presented.) and (Formula presented.), respectively. The present study contributes to the database of the statistical and spatial variability of marine clays and can provide useful guidance for assessing reliability of excavations and foundations in Marina South as well as other areas with similar geological settings.
KW - cone penetration test
KW - Marine clay
KW - scale of fluctuation
KW - spatial variability
KW - statistic analysis
KW - stochastic models
UR - http://www.scopus.com/inward/record.url?scp=85209670459&partnerID=8YFLogxK
U2 - 10.1080/17499518.2024.2422487
DO - 10.1080/17499518.2024.2422487
M3 - Comment/debate
AN - SCOPUS:85209670459
JO - Georisk
JF - Georisk
SN - 1749-9518
ER -