Papers by Keyword: Squat Silo

Abstract: The test use the practical reduced scale model of flat-bottomed silo to determine the value of static lateral pressure of silo walls, dynamic pressure of discharge process and dynamic pressure of silo walls which comes from eccentric discharge. Then the work is, respectively, to analyses static pressure value and flat-bottomed silo standard value, dynamic pressure value and static pressure value, as well as dynamic silo walls overpressure contrastively, and to calculate the coefficient size of each survey point of silo walls. Thus this trial verifies that the existence of the phenomenon of the silo dynamic overpressure and dynamic overpressure caused by eccentric discharge, also, it illustrates the problem of silo dynamic pressure we cant ignore during the engineering design.

Abstract: The two limit equilibrium methods of bulk material (Variation method and wedge model method) is employed to analyze models of sliding cuneiform volume of bulk solid, the lateral pressure formula for squat silos and equations of failure plane about sliding cuneiform volume are obtained. Variations of the positions of failure plane with height/diameter ratio are analized on the basis of the analysis for positions of failure plane by solution of these equation. The applied range and calculation method of the formula, and pressure distribution are discussed. The effects of friction between bulk solid and squat silos on the positions of failure plane and lateral pressure of bulk solid are discussed. The conclusion is that caculation results is available for squat silo design when the friction takes no into account, and the applied range of the formula is that height/diameter ratio equals 1.3. It is widely appicable for almost all squat silos. The caculation results agree with that of the full-sized silo experiment. This is a reasonable calculation method for design of squat silo.