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Analiza posadowienia słupa powłokowego linii elektroenergetycznej na palach Vibro z wykorzystaniem programu SOFiSTiK 3D

100%

Piotrowska M. , Więcławski P.

tom nr 1

13--20

Zaawansowana analiza uwzględniająca wszystkie kombinacje sił działających na konstrukcje wymagana przy wymiarowaniu fundamentu palowego w złożonych warunkach gruntowych. Schemat obliczeń posadowienia fundamentu płytowego na palach Vibro pod słup powłokowy wysokiego napięcia z wykorzystaniem programu SOFiSTiK 3D. Niezbędne parametry modelu i siły wewnętrzne w palach wyznaczane, bazując na standardowych metodach, ale stosując nowe, alternatywne podejścia.

A sophisticated analysis taking into account all combinations of forces acting on the structure required when dimensioning a pile foundation in complex soil conditions. A calculation scheme of the foundation of a plate foundation on Vibro piles for a high voltage tube pole using the SOFiSTiK 3D software. The necessary model parameters and internal forces in the piles determined on the basis of standard methods, but using new alternative approaches.

Displacement piles - classification and new methods for the calculation of bearing capacity

100%

Gwizdała K. , Więcławski P.

tom Vol. 29, No. 3

308--318

The paper presents technological changes concerning not only the method of construction, but also the materials used. Another aspect is the methods of calculating the load-bearing capacity and settlement of piles. With acceptance for use the PN-EN:1997-1:2008 standard in 2010, it was necessary to change the approaches applied that based on many years of experience and tradition. The best method in this case is to forecast the full load-settlement characteristics. On the basis of the collected data, a comparative analysis of particular displacement piles technologies was made. The usefulness of individual methods of load-bearing capacity calculation depending on the pile technology was determined.

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

61%

Krasiński A. , Słabek A. , Więcławski P. , Wiszniewski M. , Kusio T. , Tisler W.

tom Vol. 16, no. 3

89--99

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.