THERMAL EFFECTS OF HIGH TEMPERATURE STORED MATERIALS ON SHALLOW CYLINDRICAL SILOS

In order to analyze the thermal effects of high temperature stored materials on silos, the formulations determining internal forces and displacements of shallow cylindrical silos infilled with high temperature stored materials were derived, and the accuracy of these formulations were demonstrated by numerical methods. Thermal effects induced by high temperature stored materials on steel and concrete silos were analyzed by the formulations respectively. The results show that vertical temperature differences lead to significant radial displacement variations and stress increments in the vicinity of the interface between cooler and hotter stored materials in steel silos, and these stresses increasing with the decrease of the radius to thickness ratio of the silo. Radial temperature differences in concrete silo walls cause large circumferential tension at the top of the silos, while vertical temperature differences raise significant circumferential forces in the middle of the silos. These thermal effects on concrete silos also increase with the decrease of the silo radius to thickness ratio.