Earth Pressure Model of Structure Irregular Surfaces in Translational Motion in Sand

Abstract:

To explore the influence of structure shape surface on soil-structure interaction， a series of laboratory model tests are conducted and the interaction between irregular structure surfaces and sand in the translational model is studied. The irregular structure surfaces include three typical structure surfaces， i.e.， convex structure， plate structure， and concave structure. The contact pressure and soil displacement field in translation of structure are measured. The test results show that the structure shape has a noticeable influence on the maximum soil pressure， soil pressure distribution， and affected region of soil displacement. With the same relative displacement， the maximum soil pressure of the convex structure is the largest， followed by the plate structure and the concave structure. The soil pressure distributions of the convex structure and concave structure are the superposition of trapezoid and “oblique ellipse”， and the soil pressure distribution of plate structure is the superposition of trapezoid and sine function. The influence width of the earth surface of the convex structure is the largest， followed by the plate structure and the concave structure.

Key words:irregular structure surface;structure translation;soil deformation;soil pressure model