Evaluation of pile bearing capacity from results of static penetration tests using a probabilistic approach

1987 ◽  
Vol 24 (4) ◽  
pp. 133-137
Author(s):  
M. L. Divinskii
Keyword(s):  
Bearing Capacity ◽  
Probabilistic Approach ◽  
Static Penetration ◽  
Penetration Tests

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 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.

Determination of the bearing capacity of piles in permafrost by static penetration

1986 ◽  
Vol 23 (2) ◽  
pp. 58-63 ◽  
Author(s):  
Yu. G. Trofimenkov ◽  
M. A. Minkin ◽  
V. I. Gvozdik
Keyword(s):  
Bearing Capacity ◽  
Static Penetration

scholarly journals Probabilistic assessment of pile capacity based on CPTu probing including random pile foundation depth

2018 ◽  
Vol 196 ◽  
pp. 01058 ◽  
Author(s):  
Marek Wyjadłowski ◽  
Irena Bagińska ◽  
Jakub Reiner
Keyword(s):  
Bearing Capacity ◽  
Objective Assessment ◽  
Probabilistic Approach ◽  
Measurement Data ◽  
Direct Methods ◽  
Side Surface ◽  
Design Stage ◽  
Direct Data ◽  
Design Calculations ◽  
The Impact

The modern recognition of subsoil with the use of CPTu static probes allows to obtain detailed information necessary for the designing. Registered basic two quantities, i.e. cone resistance qc and friction on the sleeve fs, often become direct data, which allow to estimate bearing capacity of the base and the side surface of the pile. Direct methods use similarity of the pile work and piezo-cone work during the examination. An important design stage is the appropriate development of measurement data prior to the commencement of the procedure of determining the pile bearing capacity. Algorithms generated on the basis of empirical experiments are often applied with the simultaneous use of test loads. The probabilistic approach is also significant, because it enables objective assessment of the reliability level of performed design calculations. This work contains an analysis of the impact on the estimated bearing capacity and reliability of a pile of variable random depth of the pile base. It also includes the determination of probabilities of obtaining the assumed safety index for the designed solution at random foundation depth.

Research on Application of Seismic Piezocone Penetration Tests in Pile Foundation

2011 ◽  
Vol 368-373 ◽  
pp. 2722-2730
Author(s):  
Quan Cao ◽  
Hong Chen ◽  
Fa Bo Chen
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Single Pile ◽  
In Situ Tests ◽  
Stress Theory ◽  
Theoretical Relationship ◽  
Wide Range ◽  
Penetration Tests

According to the characteristics of installation about the penetrometer of seismic piezocone penetration tests (SCPTu) and the pile, a theoretical relationship between ultimate bearing capacity of single pile, time-effect of shaft bearing capacity of single pile, excess pore water pressure around the pile during pile driven and the data measured from SCPTu is developed based on the cavity expanded theory, the Terzaghi one-dimensional consolidation theory and effective stress theory. The result of field test in KunShan and the calculated result which used the theoretical relationship mentioned above are compared. The results indicate that the analytical solutions agree well with the in-situ tests, which show that the application of seismic piezocone penetration tests have wide range in the pile foundation.

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