| Abstract [eng] |
Study of Vertical Geostatic Pressure in Sand Earth pressure is one of the parameter which are important in engineering geology and construction. It shows how strongly soil affects engineering structures. There are two main estimation methodology, it would be calculation from known soil parameters and direct measurement. This work is intendent to compare those two methodologies. In this work main tasks are: • By measured sand parameters calculate earth pressure at selected points • Direct measure earth pressure at selected points • Compare results In order to achieve those tasks was: • Provided an appropriate testing and calculating methodology • Using testing methodology perform earth pressure direct measurement and calculation • Analyze and present experimental results • Compare directly measured and calculated earth pressure values The main conclusions would be: 1. Directly measured vertical earth pressure in vadose zone sand is lower than calculated from soil parameters by 8,4–13,5% at 1 meter depth and 3,7–9,6% at 1,5 meter depth. 2. Directly measured effective earth pressure in vadose zone sand is higher than calculated by 3,4–10,6% at 1 meter depth and 3,0–7,7 at 1,5 meter depth. 3. Those differences shows that in vadose zone sands have matric suction, which attaches sand particles to each other. Attached particles increases strains in soil, so effective vertical earth pressure increases. |
