Statistical Correlations between Pressuremeter Tests and SPT for Glacial Tills

Balachandran, Kanagaratnam; Liu, Jinyuan; Cao, Laifa; Peaker, Scott

doi:10.1061/9780784480007.016

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…The behavior of the native clayey silt till was approximated by the elastic perfectly plastic Mohr-Coulomb material model. The empirical correlation proposed by Balachandran et al (2015) to estimate the elastic modulus (E s ) of clayey silt till using SPT-N values, i.e., E s = 1.67N, was employed for both the very stiff D r a f t P.10 and hard till layers, resulting in E s values of 43 MPa and 90 MPa, respectively. The Mohr-Coulomb strength parameters (angle of internal friction,  , and cohesion, c) were adopted from the ranges provided by Cao et al (2015) for silty clay and clayey silt tills;  ranges between 31 and 41, and c ranges between 0 and 50 kPa.…”

Section: Native and Backfill Soilsmentioning

confidence: 99%

Structural performance of a medium-span RC three-sided culvert based on field measurements and numerical analyses

Ramadan

Naggar

2022

Can. Geotech. J.

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The structural performance and soil-structure interaction mechanism of a 7.3 m span three-sided culvert with flat top slab (TSC) are investigated through field monitoring and numerical analyses. The culvert was instrumented with 6 pressure cells and 14 strain gauges. Data were collected during and after construction. Two-dimensional finite element models were verified against the field measurements. The verified numerical models were then employed to evaluate the effects of the foundation soil condition (yielding or non-yielding) on the applied earth pressures along the culvert profile and the induced straining actions at the base of the culvert’s sidewall. Moreover, the structural performance of TSCs at the ultimate loading condition has been evaluated from the numerical model. The results indicated that for TSC supported on yielding foundation soil, significant bending moment develops at the sidewall base and that the assumption of hinged connection at the base is only realistic for the case of TSCs supported on rock (non-yielding foundation). In addition, the precast unit width was found to have minimal influence on the failure mechanism and the ductility of the precast unit. Finally, failure may occur at a lower backfill height for the case of non-yielding foundation relative to the case of yielding foundation.

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Section: Native and Backfill Soilsmentioning

confidence: 99%

Structural performance of a medium-span RC three-sided culvert based on field measurements and numerical analyses

Ramadan

Naggar

2022

Can. Geotech. J.

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“…There are several studies correlating the corrected SPT values and different geotechnical properties of soil such density, undrained shear strength, shear wave velocity, and liquefaction potential, but the results of these correlations are still considered preliminary and cannot be used for detailed design of foundations [6][7][8][9][10][11][12][13]. Additionally, the correlation between the results of SPTs with some promising field techniques such as pressuremeter test (PMT) and cone penetration test (CPT) using statistical analysis have been presented, which gives support for the results of SPT by newly developed techniques [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Thematic Maps for the Variation of Bearing Capacity of Soil Using SPTs and MATLAB

et al. 2020

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The current study involves placing 135 boreholes drilled to a depth of 10 m below the existing ground level. Three standard penetration tests (SPT) are performed at depths of 1.5, 6, and 9.5 m for each borehole. To produce thematic maps with coordinates and depths for the bearing capacity variation of the soil, a numerical analysis was conducted using MATLAB software. Despite several-order interpolation polynomials being used to estimate the bearing capacity of soil, the first-order polynomial was the best among the other trials due to its simplicity and fast calculations. Additionally, the root mean squared error (RMSE) was almost the same for the all of the tried models. The results of the study can be summarized by the production of thematic maps showing the variation of the bearing capacity of the soil over the whole area of Al-Basrah city correlated with several depths. The bearing capacity of soil obtained from the suggested first-order polynomial matches well with those calculated from the results of SPTs with a deviation of ±30% at a 95% confidence interval.

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“…Agan [19] investigated the relationship between PMT, SPT and laboratory test data for silty sands of a region, Kastamonu, Turkey. Balachandran and Liu [20] presented correlations between EPMT and SPT-N value of glacial tills. Narimani et al [21] developed simple and nonlinear regression models to correlate SPT, compression and pressuremeter test data.…”

Section: Introductionmentioning

confidence: 99%

Correlation Between SPT and PMT Results for Sandy and Clayey Soils

Yıldız

2021

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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Determination of soil deformation and strength properties is of great importance in geotechnical design. The disturbance that occurred during the sampling from the field affects the results obtained by the laboratory tests. Therefore, the lack of representation of the field conditions and in-situ soil features with laboratory tests leads the designers to carry out field tests. Standard penetration test (SPT) and the Menard pressuremeter test (PMT) are the most widely used geotechnical field tests in which the results are utilized to investigate soil properties and lateral deformation characteristics at a specified depth. In this study, a total of 102 data of sandy and clayey soils belonging to the geotechnical investigations carried out in Istanbul were compiled. The regression analysis between the corrected SPT blow count N60, pressuremeter modulus EPMT, limit pressure PL and EPMT/PL ratio is performed. Empirical equations were separately developed for sandy and clayey soils between the considered parameters. The developed equations showed that there are acceptable relationships between the parameters examined in the particular dataset. Moreover, a neural network (NN) based prediction model was developed to predict EPMT and PL using the available soil data. The highly accurate prediction performance of the proposed model demonstrated the availability of modern methods for the estimation of soil parameters.

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Statistical Correlations between Pressuremeter Tests and SPT for Glacial Tills

Cited by 5 publications

References 3 publications

Structural performance of a medium-span RC three-sided culvert based on field measurements and numerical analyses

Structural performance of a medium-span RC three-sided culvert based on field measurements and numerical analyses

Thematic Maps for the Variation of Bearing Capacity of Soil Using SPTs and MATLAB

Correlation Between SPT and PMT Results for Sandy and Clayey Soils

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