Numerical simulation of screw displacement pile interaction with non-cohesive soil

Krasiński, Adam

doi:10.1016/j.acme.2013.05.010

Cited by 24 publications

(14 citation statements)

References 7 publications

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“…Plaxis 2D v. 8.6 is a Finite Element Method based program. Some suggestions related to the modelling process and authors' comments are presented in Krasiński [11], [14]. The properties of materials used in the analysis are shown in Table 2.…”

Section: Simulation Methodsmentioning

confidence: 99%

Static Load Test on Instrumented Pile – Field Data and Numerical Simulations

Krasiński

Wiszniewski

2017

Studia Geotechnica Et Mechanica

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Static load tests on foundation piles are generally carried out in order to determine load -the displacement characteristic of the pile head. For standard (basic) engineering practices this type of test usually provides enough information. However, the knowledge of force distribution along the pile core and its division into the friction along the shaft and the resistance under the base can be very useful. Such information can be obtained by strain gage pile instrumentation [1]. Significant investigations have been completed on this technology, proving its utility and correctness [8], [10], [12]. The results of static tests on instrumented piles are not easy to interpret. There are many factors and processes affecting the final outcome. In order to understand better the whole testing process and soil-structure behavior some investigations and numerical analyses were done. In the paper, real data from a field load test on instrumented piles is discussed and compared with numerical simulation of such a test in similar conditions. Differences and difficulties in the results interpretation with their possible reasons are discussed. Moreover, the authors used their own analytical solution for more reliable determination of force distribution along the pile. The work was presented at the XVII French-Polish Colloquium of Soil and Rock Mechanics, Łódź, 28-30 November 2016.

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Section: Simulation Methodsmentioning

confidence: 99%

Static Load Test on Instrumented Pile – Field Data and Numerical Simulations

Krasiński

Wiszniewski

2017

Studia Geotechnica Et Mechanica

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“…A simple example of a model estimating the effect of pile installation was presented in [8]. A similar approach was proposed by Krasinski [9] for the numerical modelling of the screw pile installation process; however, a comparison of the simulation results with the field measurements showed that the soil parameters still require additional corrections in the zones next to the pile. Another method, the Press Replace Technique, was introduced in [3].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Various Aspects of Pipe Pile Static Load Test

2021

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Due to the development of dedicated software and the computing capabilities of modern computers, the application of numerical methods to analyse more complex geotechnical problems is becoming increasingly common. However, there are still some areas which, due to the lack of unambiguous solutions, require a more thorough examination, e.g., the numerical simulations of displacement pile behaviour in soil. Difficulties in obtaining the convergence of simulations with the results of static load tests are mainly caused by problems with proper modelling of the pile installation process. Based on the numerical models developed so far, a new process of static load test modelling has been proposed, which includes the influence of pile installation on the soil in its vicinity and modelling of contact between steel pile and the soil. Although the presented method is not new, this is relevant and important for practitioners that may want to improve the design of displacement piles. The results of the numerical calculations were verified by comparing them with the results of pipe pile field tests carried out in a natural scale on the test field in Southern Poland.

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“…This approach was applied e.g. by Krasiński [2], [3]. Further development of this method is presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Pile Model Tests Using Strain Gauge Technology

Krasiński

Kusio

2015

Studia Geotechnica Et Mechanica

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Ordinary pile bearing capacity tests are usually carried out to determine the relationship between load and displacement of pile head. The measurement system required in such tests consists of force transducer and three or four displacement gauges. The whole system is installed at the pile head above the ground level. This approach, however, does not give us complete information about the pile-soil interaction. We can only determine the total bearing capacity of the pile, without the knowledge of its distribution into the shaft and base resistances. Much more information can be obtained by carrying out a test of instrumented pile equipped with a system for measuring the distribution of axial force along its core. In the case of pile model tests the use of such measurement is difficult due to small scale of the model. To find a suitable solution for axial force measurement, which could be applied to small scale model piles, we had to take into account the following requirements: - a linear and stable relationship between measured and physical values, - the force measurement accuracy of about 0.1 kN, - the range of measured forces up to 30 kN, - resistance of measuring gauges against aggressive counteraction of concrete mortar and against moisture, - insensitivity to pile bending, - economical factor. These requirements can be fulfilled by strain gauge sensors if an appropriate methodology is used for test preparation (Hoffmann [1]). In this paper, we focus on some aspects of the application of strain gauge sensors for model pile tests. The efficiency of the method is proved on the examples of static load tests carried out on SDP model piles acting as single piles and in a group.

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Numerical simulation of screw displacement pile interaction with non-cohesive soil

Cited by 24 publications

References 7 publications

Static Load Test on Instrumented Pile – Field Data and Numerical Simulations

Static Load Test on Instrumented Pile – Field Data and Numerical Simulations

Numerical Modelling of Various Aspects of Pipe Pile Static Load Test

Pile Model Tests Using Strain Gauge Technology

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