scholarly journals THE ASSESSMENT OF THE POSSIBILITY OF USING STATIC PENETRATION TESTS OF SOIL MATERIALS FOR CALCULATION OF THE BEARING CAPACITY OF INJECTION PILES

2016 ◽  
Vol 4 (1) ◽  
pp. 0-0
Author(s):  
Анатолий Полищук ◽  
Anatoliy Polishchuk ◽  
Александр Тарасов ◽  
Aleksandr Tarasov
Keyword(s):  
Bearing Capacity ◽  
Soft Clay ◽  
Calculated Data ◽  
Pile Foundations ◽  
Clay Soils ◽  
Static Penetration ◽  
Penetration Tests

The article presents evaluation of the possibility of calculating the bearing capacity of the injection of piles in soft clay soils on materials static penetration with the recommendations of the SP 24.13330.2011- "Pile foundations. Updated version of SNiP 2.02.03-85. Also the the experimental and calculated data are compared

scholarly journals Bearing Capacity of Piled Rafts on Soft Clay Soils

2006 ◽  
Vol 132 (12) ◽  
pp. 1600-1610 ◽  
Author(s):  
Luca de Sanctis ◽  
Alessandro Mandolini
Keyword(s):  
Bearing Capacity ◽  
Soft Clay ◽  
Clay Soils

Evaluation of lateral response of single piles to adjacent excavation using data from cone penetration tests

2019 ◽  
Vol 56 (2) ◽  
pp. 236-248 ◽  
Author(s):  
Hongjiang Li ◽  
Songyu Liu ◽  
Liyuan Tong
Keyword(s):  
Bearing Capacity ◽  
Free Field ◽  
Full Scale ◽  
Pile Foundations ◽  
Cone Penetration ◽  
Cone Penetration Tests ◽  
Lateral Response ◽  
Stress Changes ◽  
Full Scale Tests ◽  
Penetration Tests

Excavation inevitably induces stress changes in the surrounding soil, which causes significant lateral movements, additional forces, and bending moments in the existing pile foundations. To prevent or minimize damage to adjacent piles, this paper presents an actual full-scale instrumented study to examine the lateral response of existing piles to an adjacent test pit excavation. Cone penetration tests (CPTs) near the test piles before and after excavation are conducted and compared. A simple p–y evolution model for lateral piles during excavation is proposed. The proposed model is defined by the pre-excavation and post-excavation p–y curves from CPT data, which can provide better predictions by comparison with the field measured results. Additionally, for analysis of the pile behaviour after excavation, the observed lateral bearing capacity of full-scale tests are compared with those computed by the pre-excavation and post-excavation p–y curves. The post-excavation p–y curve can generally give a satisfactory prediction of the residual pile bearing capacity after excavation. The calculated results from the free-field cone parameters have a serious overestimation and are detrimental to the service design of pile foundations.

scholarly journals DESIGN OF SUBSOIL IMPROVEMENT BELOW HALL FLOORS

2017 ◽  
Vol 10 ◽  
pp. 56
Author(s):  
Peter Turček ◽  
Monika Súlovská
Keyword(s):  
Bearing Capacity ◽  
Soft Clay ◽  
Thick Layer ◽  
Soil Improvement ◽  
Stone Columns ◽  
Clay Soils ◽  
Industrial Park ◽  
Construction Site ◽  
Geological Conditions ◽  
The Town

The construction of an industrial park is now being prepared near the town of Nitra. The investor fixed very strict conditions for the bearing capacity and, above all, the settlement of halls and their floors. The geological conditions at the construction site are difficult: there are soft clay soils with high compressibility and low bearing capacity. A detailed analysis of soil improvement was made. Stone columns were prepared to be fitted into an approximately 5 m thick layer of soft clay. The paper shows the main steps used in the design of the stone columns.

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

Geosciences ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 329
Author(s):  
Mahdi O. Karkush ◽  
Mahmood D. Ahmed ◽  
Ammar Abdul-Hassan Sheikha ◽  
Ayad Al-Rumaithi
Keyword(s):  
Bearing Capacity ◽  
Mean Squared Error ◽  
Ground Level ◽  
The Other ◽  
Thematic Maps ◽  
First Order ◽  
Squared Error ◽  
Order Polynomial ◽  
Interpolation Polynomials ◽  
Penetration Tests

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.

The bearing capacity of footings on a sand layer overlying soft clay

Géotechnique ◽  
1997 ◽  
Vol 47 (2) ◽  
pp. 339-345 ◽  
Author(s):  
M. J. Kenny ◽  
K. Z. Andrawes
Keyword(s):  
Bearing Capacity ◽  
Soft Clay ◽  
Sand Layer
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