Results of the “DPDT-Auger” research project on screw displacement piles

• Autorzy: Krasiński Adam , Słabek Andrzej , Więcławski Paweł , Wiszniewski Mateusz , Kusio Tomasz , Tisler Witold

Identyfikatory

DOI

10.2478/acee-2023-0036

• Języki publikacji: EN

Abstrakty

EN

The main objective of the “DPDT-Auger” research project was to test the prototype DPDT auger for forming screw displacement piles in the ground (patented in Poland in 2020). An additional aim was to develop design methods and rules for the making of such piles. The augers and piles were first tested on a model scale, and then more extensively in the real scale on experimental field plots. The results found the overall functionality of the DPDT auger to be good, and in several aspects better than that of the SDP auger. The load-bearing capacities and Q-s characteristics of piles made with both augers were considered comparable. All the conducted tests and their derived dependencies together with the results of in situ subsoil tests allowed for the development of empirical calculation methods and prognostic procedures, useful for designing and producing piles with DPDT and SDP augers. FEM numerical simulation rules for the considered piles were also developed, verified and calibrated by the results of real pile tests. This article describes only the most important final results of the research project but not the detailed results of the numerous tests and analyses that were carried out. Also omitted are the results of model tests and numerical simulations, as well as the implementation and acceptance recommendations, as they have already been or will be the subject of separate publications.

Słowa kluczowe

EN

screw displacement pile; pile auger; pile load capacity; soil resistance during pile formation; pile calculations

PL

wkręcany pal przemieszczeniowy; świder palowy; nośność pala; opór gruntu podczas formowania pali; wymiarowanie pali

• Wydawca: Silesian University of Technology
• Czasopismo: Architecture Civil Engineering Environment
• Rocznik: 2023
• Tom: Vol. 16, no. 3
• Strony: 89--99
• Opis fizyczny: Bibliogr. 13 poz.

Twórcy

autor

Krasiński Adam

• Associate Prof., PhD, Habil., Eng.; Gdansk University of Technology, Faculty of Civil and Environmental Engineering,Narutowicza 11/12, 80-233 Gdansk

autor

Słabek Andrzej

• PhD, Eng.; Budokop Geotechnika Sp. z o.o. ul. Legionów 2, 82-300 Elbląg

autor

Więcławski Paweł

• PhD, Eng.; Gdansk University of Technology, Faculty of Civil and Environmental Engineering

autor

Wiszniewski Mateusz

• MSc, Eng.; Gdansk University of Technology, Faculty of Civil and Environmental Engineering

autor

Kusio Tomasz

• MSc, Eng.; Gdynia Maritime University, Faculty of Marine Engineering, ul. Morska 81-87, 81-225 Gdynia

autor

Tisler Witold

• PhD, Eng.; Gdansk University of Technology, Faculty of Civil and Environmental Engineering

Bibliografia

• [1] Opis patentowy Nr PL 235442 B1: Świder do wykonywania pali przemieszczeniowych wkręcanych. (Patent description No. PL 235442 B1: Drill for screw displacement piles execusion) (In Polish). Urząd Patentowy RP, 10.08.2020, Warsaw, Poland.
• [2] Krasiński A., Więcławski P., Wiszniewski M., Kusio T. (2022). Model tests of cast-in-place piles formed by using different types of auger. Proc. of the 20th Int. Conf. on Soil Mechanics and Geotechnical Engineering, Australian Geomechanics Society, Sydney, 1227–1232.
• [3] Więcławski P., Krasiński A. (Forthcoming). FEM modelling of screw displacement piles interaction with subsoil. Archives of Civil Engineering.
• [4] Robertson, P.K. (1990). Soil classification using the cone penetration test. Canadian Geotechnical Journal, 27(1), 151–158.
• [5] Marchetti, S. (1997). The Flat Dilatometer: Design Applications. Proc. Third International Geotechnical Engineering Conference, Keynote lecture, Cairo Univ., 421–448.
• [6] Krasiński A., Więcławski P., Kusio T., Wiszniewski M., Tisler W. (2022). Raport końcowy z projektu badawczego “DPDT-Auger”, nr POIR.04.01.04-00-0124/18 „Opracowanie metody i narzędzi do wykonywania kolumn/pali przemieszczeniowych wkręcanych w różnorodnych warunkach gruntowych na obszarze Polski wraz z przygotowaniem metodyki do projektowania i odbioru robót”. (Final report from research project “DPDT-Auger”, nr POIR.04.01.04-00-0124/18 “Development of a method and tools for the installation of screw displacement columns/piles in various ground conditions in Poland, together with the preparation of a methodology for the design and acceptance of works” (In Polish) (Unpublished data). Opracowanie tekstowe. Gdansk University of Technology. Gdansk, Poland.
• [7] Słabek A., Krasiński A. (2022). Testy terenowe prototypowego świdra DPDT do formowania pali i kolumn przemieszczeniowych wkręcanych. (Field testing of the prototype DPDT auger for forming screw displacement piles and columns) (In Polish). Inżynieria Morska i Geotechnika, 3, 127–136.
• [8] Krasiński A. (Forthcoming). Estimation of bearing capacity of screw displacement piles based on drilling resistances. Studia Geotechnica et Mechanica.
• [9] Krasiński A. (2013). Pale przemieszczeniowe wkręcane. Współpraca z niespoistym podłożem gruntowym (Screw displacement piles. Bearing capacity and work in non-cohesive soils) (In Polish). (Habilitation thesis, Gdansk University of Technology), Monografie Nr 134, Wydawnictwo Politechniki Gdańskiej, Gdańsk, Poland, 250.
• [10] Krasiński A. (2012). Proposal for calculating the bearing capacity of screw displacement piles in non-cohesive soils based on CPT results. Studia Geotechnica et Mechanica, XXXIV(4), 41–51.
• [11] European/Polish Committee for Standardization, “PN-EN:1997-1:2008 – Eurocode 7: Geotechnical design – Part 1: General rules”, Brussels/Warsaw.
• [12] Gwizdała K. (2010): Fundamenty palowe. Technologie i obliczenia. (Pile foundations. Technologies and calculations) (In Polish). PWN, Warsaw, Poland.
• [13] Krasiński A. (2014). The analysis of soil resistance during screw displacement pile installation. Studia Geotechnica et Mechanica, XXXVI(3), 49–56.