The industrial buildings settlement foundations calculation made taking into account the soils vibro-creep

Abstract

The present study focuses on the interaction of soil and the foundation under vibration and cyclic loading arising from the operation of dynamic machinery of industrial buildings. The paper presents the methods for predicting the behavior of sand under vibration loads on the example of testing in a triaxial compression device with the possibility of creating dynamic loading. During the final stage of testing, the values of the sample’s additional deformations were obtained due to the vertical vibration load action of a given frequency under conditions of consolidated-drained triaxial compression. The vibro-creep coefficient was obtained, which makes it possible to determine the reduced Young's modulus, which makes it possible to use it in the sediment calculations by the layer-by-layer summation method. The dependence graphs of the Young's modulus on the pressure of the all-round reduction and vertical deformation on the number of cycles “load – discharge” are given. Analytical and numerical calculations of vertical deformations on the elastic base with vibration load are performed. The possibility of obtaining the coefficient of vibro-creep for different types of sandy soils in tabular form with the aim of simplifying the foundations additional movements calculation of the machines with dynamic loads is presented.