Soil - Structure Interaction of Cylindrical Tank of Variable Wall Thickness under the Thermal Gradient Conditions

摘要

The paper presents an effective method for the analysis of soil-structure interaction including the behaviour of cylindrical storage tank with varying wall thickness under the thermal gradient conditions.Elastic half-space and the Winkler model have been used for the description of subsoil.The soil-structure interaction is described by using the power series.A computational example of reinforced concrete tank loaded with temperature difference across the wall thickness is given.The analysis of a hydrostatically loaded cylindrical tank,performed for the model,incorporating elastic half-space shows decrease of radial displacements,as well as substantial changes in the distribution of bending moments compared to the Winkler foundation.A local increase of subsoil reaction around the slab circumference is observed for the case of elastic half-space,contrary to the Winkler model.In the case of a tank loaded with the thermal gradient,however,the solutions for both subsoil models do not differ significantly.