Temat: screw displacement pile - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The analysis of soil resistance during screw displacement pile installation
Autorzy:: Krasiński, A.
Powiązania:: https://bibliotekanauki.pl/articles/178460.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: screw displacement pile
pile installation
pile auger
torque
soil resistance
Opis:: The application of screw displacement piles (SDP) is still increasing due to their high efficiency and many advantages. However, one technological problem is a serious disadvantage of those piles. It relates to the generation of very high soil resistance during screw auger penetration, especially when piles are installed in non-cohesive soils. In many situations this problem causes difficulties in creating piles of designed length and diameter. It is necessary to find a proper method for prediction of soil resistance during screw pile installation. The analysis of screw resistances based on model and field tests is presented in the paper. The investigations were carried out as part of research project, financed by the Polish Ministry of Science and Higher Education. As a result of tests and analyses the empirical method for prediction of rotation resistance (torque) during screw auger penetration in non-cohesive subsoil based on CPT is proposed.
Źródło:: Studia Geotechnica et Mechanica; 2014, 36, 3; 49-56
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Pile model tests using strain gauge technology
Autorzy:: Krasiński, A.
Kusio, T.
Powiązania:: https://bibliotekanauki.pl/articles/178927.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: screw displacement pile
CFA piles
deep foundation
model tests
group of piles
Opis:: 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.
Źródło:: Studia Geotechnica et Mechanica; 2015, 37, 3; 49-52
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Comparative model tests of SDP and CFA pile groups in non-cohesive soil
Autorzy:: Krasiński, A.
Kusio, T.
Powiązania:: https://bibliotekanauki.pl/articles/178182.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: CFA piles
screw displacement pile
deep foundation
model tests
group of piles
Opis:: The research topic relates to the subject of deep foundations supported on continuous flight auger (CFA) piles and screw displacement piles (SDP). The authors have decided to conduct model tests of foundations supported on the group of piles mentioned above and also the tests of the same piles working as a single. The tests are ongoing in Geotechnical Laboratory of Gdańsk University of Technology. The description of test procedure, interpretation and analysis of the preliminary testing series results are presented in the paper.
Źródło:: Studia Geotechnica et Mechanica; 2014, 36, 4; 7-11
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Advanced field investigations of screw piles and columns
Zaawansowane badania terenowe pali i kolumn wkręcanych
Autorzy:: Krasiński, A.
Powiązania:: https://bibliotekanauki.pl/articles/230507.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: pal wkręcany
kolumna wkręcana
pal CMC
przemieszczenie
nośność
badanie terenowe
screw column
screw pile
CMC column
displacement
bearing capacity
field investigation
Opis:: Field investigations concerning screw piles and columns have been carried out for the "Bearing capacity and work in the soil of screw piles" research project, financed by the Polish Ministry of Science and Higher Education - project No N N506 369234. The tests of three instrumented screw piles were conducted together with CPTU tests and measurements of pile installation parameters (especially torque). The objectives of field investigations and the entire research project include discovering how screw piles work in the soil, locating and describing the correlations between CPTU results and rotation resistance during pile auger installation and next establishing correlations between CPTU results, rotation resistance and the bearing capacity of this kind of piles. The paper describes the investigation procedure and the basic results of tests carried out in the first of a series of sites.
Dla potrzeb projektu badawczego "Nośność i praca w gruncie pali wkręcanych" finansowanego przez Ministerstwo Nauki i Szkolnictwa Wyższego - projekt nr N N506 369234 rozpoczęto badania terenowe pali i kolumn wkręcanych. W artykule opisano badania na pierwszym zorganizowanym do tego celu poletku doświadczalnym. Przeprowadzono na nim badania trzech pali wkręcanych z użyciem specjalnego systemu pomiarowego oraz w połączeniu z badaniami podłoża gruntowego za pomocą sondowań CPTU oraz z pomiarami parametrów wykonawstwa pali (moment wkręcający i inne). Celem badań terenowych i całego projektu badawczego jest rozpoznanie charakteru pracy pali wkręcanych w gruncie oraz określenie zależności pomiędzy wynikami sondowań CPT a oporami wkręcania i nośnością pali wkręcanych. W artykule zawarto opis przebiegu oraz podstawowe wyniki wykonanych badań.
Źródło:: Archives of Civil Engineering; 2011, 57, 1; 45-57
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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