ON THE K₀ FACTOR

Abstract

After the presenting of the significance of the K₀ factor the paper discusses sorne aspects of the formulae for the coefficient of the earth pressure at rest mainly the well-known Jáky's equitation. The history and the background of this were shown and analyzed. An improvement for the critical Jáky's assumption was introduced and a modified K₀ ... φ relationship was deducted. All the formulae originated on Jáky's idea and some other continuum mechanical or speculative equitations are tested against 153 measured data. As conclusions of these analyses the formulae were qualified and the original Jáky's equitation the ones from Vierbiczky and Matsuoka-Sakakibara were found to be the best.