Rola współczynnika parcia geostatycznego Ko w analizach geotechnicznych i sposoby jego oceny

• Autorzy: Fedorowicz L. , Fedorowicz J.

Warianty tytułu

EN

Role of geostatic pressure coefficient Ko in geotechnical analyses and its assessment methods

• Języki publikacji: PL

Abstrakty

PL

W pracy przedstawiono możliwości oszacowania stanu naprężeń pierwotnych w gruncie dla potrzeb szeroko rozumianych numerycznych analiz geotechnicznych. Zebrano (na podstawie literatury) najczęściej używane wzory do obliczenia wartości współczynnika parcia spoczynkowego Ko. Wskazano na zakres możliwych zmian wartości współczynnika parcia w zależności od oceny niektórych parametrów określających stan gruntu oraz wytrzymałość. Zestawiono wzory pozwalające na oszacowanie wartości współczynnika parcia dla gruntów normalnie skonsolidowanych (30 wzorów) oraz prekonsolidowanych (29 wzorów). Dla wybranych zagadnień geotechniki przedstawiono zakres możliwych zmian wartości oszacowywanego współczynnika parcia spoczynkowego Ko, a także wpływ tych zmian na wyniki analiz numerycznych.

EN

In the paper – based on short history of geotechnical tests conducted for assessment of in situ state of stress – collected formulas and procedures from literature for estimation of values of earth pressure coefficient in rest Ko are presented. Primary state of stress in subsoil is one of the most important factors which influence the interpretation of results of tests in the terrain; used for assessment of strength and deformability soil parameters in in-situ conditions. Described problems stem from the fact, that soil medium is a material with memory, for which, level of past loading is important, and the fact, that during state of stress change in soil caused by actual loading, side earth pressure coefficient also changes. Variation range of values of coefficient Ko based on some expressions presented in paper can be observed. From diagrams, it can be concluded that in case of overconsolidated soil, differences in values might be essential. Some of those situations are presented in numerical analyses; for the strip foundation and for soil pressure acting on the wall in mining area.

Słowa kluczowe

PL

współczynnik parcia spoczynkowego; grunt skonsolidowany; grunt prekonsolidowany; modelowanie numeryczne; geotechnika

EN

coefficient of pressure; consolidated soil; overconsolidated soil; numerical modelling; geotechnics

• Wydawca: Wydawnictwo Wyższej Szkoły Technicznej w Katowicach
• Czasopismo: Zeszyty Naukowe Wyższej Szkoły Technicznej w Katowicach
• Rocznik: 2014
• Tom: nr 6
• Strony: 35--54
• Opis fizyczny: Bibliogr. 77 poz., rys., tab.

Twórcy

autor

Fedorowicz L.

• Wydział Budownictwa, Architektury i Sztuk Stosowanych, Wyższa Szkoła Techniczna w Katowicach ul. Rolna 43, Katowice

autor

Fedorowicz J.

• Politechnika Śląska w Gliwicach

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