Criteria of modeling the behavior of single piles

Conclusions

• 1. For relative lengths of piles up to 30–40 their interaction with sand soils obeys Coulomb's law and can be described by dependences (7)–(9) of the present work.

• 2. Modeling the behavior of rigid piles under a vertical load, we can limit ourselves to a simple similarity, reproducing on the model the angle of internal friction of the soil and pile-driving technology for a geometrical modeling scale of not more than 10 with conversion of the data obtained by the proposed method.

• 3. Investigation of piles under an inclined or horizontal load requires reproduction of four physical and mechanical characteristics of the soil simultaneously on the model: modulus of deformation, density, angle of internal friction, and lateral earth pressure coefficient, as well as the angle of internal friction. However, in the range of angles of internal friction 30–45° and in rough piles we can limit ourselves to modeling the first three of the indicated parameters.

• 4. The proposed scheme of behavior of rigid piles and the modeling method based on it permit predicting the behavior of single piles under a vertical load on the basis of existing analogs or tests of small piles.