Analiza możliwości opisu krzywej obciążenie-osiadanie pala na podstawie wyników sondowania statycznego CPTu

• Autorzy: Żarkiewicz, Krzysztof , Meyer, Zygmunt

Warianty tytułu

EN

Analysis of the possibility of description the pile load-settlement curve based on the CPTu results

• Języki publikacji: PL

Abstrakty

PL

Jednym z badań terenowych gruntu wykorzystywanych powszechnie do projektowania pali jest sondowanie statyczne CPTu. Nośność fundamentów palowych jest powszechnie weryfikowana w terenie przez testy próbnego obciążenia statycznego. Wynikiem tego badania jest zależność obciążenie-osiadanie pala, która może być przybliżoną krzywą ciągłą zwaną M-K. Głównym celem pracy jest sprawdzenie możliwości określenia parametrów krzywej M-K na podstawie wyników badań terenowych sondą CPTu. Badania eksperymentalne doprowadziły do uzyskania zależności pomiędzy parametrami krzywej M-K i parametrami geotechnicznymi, w tym sondowania statycznego CPTu. W pracy przedstawiono możliwości wykorzystania wyników sondowania CPTu do oszacowania krzywej osiadania pala. Znajomość tej zależności na etapie projektowania fundamentu pozwala na potwierdzenie, czy pal spełnia warunki nośności oraz na określenie zapasu bezpieczeństwa, co daje projektantom większe możliwości poprawnego zaprojektowania fundamentu.

EN

One of the field soil tests commonly used for pile design is CPTu static sounding. The load-bearing capacity of pile foundations is commonly verified in field experiments through static load tests. The result of this test is the load-settlement relationship of the pile which can be approximated by a curve named M-K. The main aim of the work is to check the possibility of determining the parameters of the M-K curve based on the results of field tests with the CPTu sounding. Experimental research leads to relationships between the parameters of the M-K curve and geotechnical parameters, including CPTu static sounding. The paper presents the possibilities of using the CPTu sounding to estimate the pile settlement curve. Knowledge of this relationship at the foundation design stage allows you to confirm whether the pile meets the load-bearing conditions and to determine the safety margin, which gives designers greater opportunities to correctly design the foundation.

• Czasopismo: Inżynieria i Budownictwo
• Rocznik: 2024
• Tom: R. 80, nr 6
• Strony: 492--497
• Opis fizyczny: Bibliogr. 26 poz., il., tab.

Twórcy

autor

Żarkiewicz, Krzysztof

• Zachodniopomorski Uniwersytet Technologiczny, Wydział Budownictwa i Inżynierii Środowiska

autor

Meyer, Zygmunt

• Zachodniopomorski Uniwersytet Technologiczny, Wydział Budownictwa i Inżynierii Środowiska

Bibliografia

• [1] Pooya Nejad F., Jaksa M.B.: Load-setllement behavior modeling of single piles using artificial neural networks and CPT data, Computers and Geotechnics, 2017, doi: 10.1016/j.compgeo.2017.04.003.
• [2] Alkroosh I., Nikraz H.: Simulating pile load-setllement behavior from CPT data using intelligent computing, Central European Journal of Engineering, vol. 1, no. 3, pp. 295-305, 2011, doi: 10.2478/s13531-011-0029-2.
• [3] Baziar M.H., Saeedi Azizkandi A., Kashkooli A.: Prediction of pile settlement based on cone penetration test results: An ANN approach, KSCE Journal of Civil Engineering, vol. 19, no. 1, pp. 98-106,2015, doi: 10.1007/s12205-012-0628-3.
• [4] Flynn K.N., McCabe B.A.: Shaft resistance of driven cast-in-situ piles in sand, Canadian Geotechnical Journal, vol. 53, no. 1, pp. 1-11, 2016, doi: 10.1139/cgj-2015-0032.
• [5] Veiskarami M., Eslami A., Jyant Kumar: End-bearing capacity of driven piles in sand using the stress characteristics method: analysis and implementation, Canadian Geotechnical Journal, vol. 48, no. 10, pp. 1570-1586, 2011, doi: 10.1139/t11-057.
• [6] Lo S.-C., Li K.S.: Influence of a permanent liner on the skin friction of large-diameter bored piles in Hong Kong granitic saprolites, Canadian Geotechnical Journal, vol. 40, no. 4, pp. 793-805, 2003, doi: 10.1139/t03-028.
• [7] Wrana B.: Pile Load Capacity - Calculation Methods, Studia Geotechnica et Mechanica, vol. 37, no. 4, 2015, doi: 10.1515/sgem-2015-0048.
• [8] Guo W.: Theory and Practice of Pile Foundations, 2012, doi: 10.1201/b12980.
• [9] Briaud J.: Geotechnical Engineering. Unsaturated and saturated soils, New Jersey, Canada, Wiley, 2013.
• [10] Zhao M., Yang M., Zou X.: Vertical bearing capacity of pile based on load transfer model, Journal of Central South University of Technology, vol. 12, no. 4, pp. 488-493, 2005, doi: 10.1007/s11771-005-0188-5.
• [11] Meyer Z., Żarkiewicz K.: Skin and Toe Resistance Mobilisation of Pile During Laboratory Static Load Test, Studia Geotechnica et Mechanica, vol. 40, no. 4, pp. 1-5, 2018, doi: https://doi.org/10.2478/sgem-2018-0001.
• [12] Liu J., Zhang K.: Analysis of pile load-transfer under pile-side softening, Journal of Central South University of Technology, vol. 10, no. 3, pp. 231-236, Sep. 2003, doi: 10.1007/s11771-003-0015-9.
• [13] Siemaszko P., Meyer Z.: Static load test curve analysis based on soil field investigations, Bulletin of the Polish Academy of Sciences: Technical Sciences, vol. 67, no. 2, pp. 329-337, 2019, doi: 10.24425/bpas.2019.128607.
• [14] Młynarek Z., Wierzbicki J., Lunne T.: The Use of CPTU and DMT Methods to Determine Soil Deformation Moduli - Perspectives and Limitations, Studia Geotechnica et Mechanica, no. 19, 2023, doi: 10.2478/sgem-2023-0021.
• [15] Robertson P.K., Cabal K.L.: Guide to Cone Penetration Testing for Geotechnical Engineering, 6th Editio. California: GREGG, 2014.
• [16] Niazi F.S., Mayne P.W.: Modeling of shear stiffness reduction from database of axial load tests on pile foundations, E3S Web of Conferences, vol. 92, pp. 1-6, 2019, doi: 10.1051/e3sconf/20199213002.
• [17] Ma H.W, et al.: Research on Bearing Theory of Squeezed Branch Pile, Advances in Civil Engineering, vol. 2020, 2020, doi: 10.1155/2020/6637261.
• [18] Randolph M.F., Wroth C.P.: An Analysis of The Vertical Deformation of Pile Groups, Geotechnique, vol. 29, no. 4, pp. 423-439, 1979, doi: 10.1680/geoI.1979.29.4.423.
• [19] Haque M.N., Abu-Farsakh M.Y., Zhang Z.: Evaluation of pile capacity from CPT and pile setup phenomenon, International Journal of Geotechnical Engineering, vol. 14, no. 2, pp. 196-205, 2020, doi: 10.1080/19386362.2017.1413035.
• [20] Żarkiewicz K.: Laboratory Experiment of Soil Vertical Displacement Measurement Near an Axially Loaded Pile, IOP Conference Series: Materials Science and Engineering, vol. 603, p. 032012, Sep. 2019, doi: 10.1088/1757-899X1603/3/032012.
• [21] Li L., Gong W.: Prediction of nonlinear vertical settlement of a pile group consisting of new and existing displacement piles in clay strata, Soils and Foundations, vol. 59, no. 5, pp. 1336-1348, 2019, doi: 10.1016/j.sandf.2019.06.001.
• [22] Xu J., Xu X., Yao W.: Improved approach of super-Iong pile group considering multiple interaction under axial load, Arabian Journal of Geosciences, vol. 14, no. 1,2021, doi: 10.1007/s12517-020-06406-3.
• [23] Li L., et al.: Analysis of nonlinear load-displacement behaviour of pile groups in clay considering installation effects, Soils and Foundations, vol. 60, no. 4, pp. 752-766, 2020, doi: 10.1016/j.sandf.2020.04.008.
• [24] Tran K.T., Wasman S.J., McVay M., Herrera R.: Capacity evaluation of voided driven piles using embedded data collectors, Canadian Geotechnical Journal, vol. 54, no. 10, pp. 1397-1407, Oct. 2017, doi: 10.1139/cgj-2017 -0008.
• [25] Meyer Z., Stachecki K.: Static load test curve (Q-s) conversion in to pile of different size, Annals of Warsaw University of Life Sciences - SGGW Land Reclamation, vol. 50, no. 2, pp. 171-182, Jun. 2018, doi: 10.2478/sggw-2018-0014.
• [26] Żarkiewicz K.: The Analysis of Pile Skin and Base Resistances Interaction Based on Static Pile Load Test in Experimental Research, Architecture, Civil Engineering, Environment, vol. 16, no. 3, pp. 141-150, 2023, doi: 10.2478/acee-2023-0041.

Identyfikatory

DOI

10.5604/01.3001.0054.7493