INVESTIGATION OF TOTAL STRESSES IN RECTANGULAR SECTION CONDUIT BODY LOCATED ON A CLAY BASE

Abstract

Purpose: to study the total stresses in the rectangular section conduit body TOTAL S-YY and S-XX while analyzing the influence of the soil height above the conduit and the load from the vehicle axle on the conduit. At the same time, the influence factors varied in the range: the soil height above the conduit from 0.5 to 1.2 m, the load from the axle of the car on the conduit from 5 to 40 t. Materials and methods. The study of a complex system was carried out in two stages. At the first stage, using a numerical method based on the Midas GTX NX program, which is able to take into account the complex joint work of the conduit structure located in the ground, the stresses in it were calculated. Further, the resulting array of numbers, reflecting the physics of the processes occurring when the response function is influenced, for which the total stresses of the perturbation factors are taken and the height of the soil above the conduit and the load on the conduit from the car, was subjected to digital analysis. Results. The total stresses in the conduit at a constant soil height above it are characterized by a very active linear relationship with the force on the soil for both horizontal and vertical stresses. Horizontal stresses S-XX in the range of argument change from 5 to 40 t provide a change in the response function by 28.82 %. At the same time, the vertical S-YY stresses in the conduit at a constant height of the soil above it are almost as linearly active and provide a change in the response function by 24.79 %. Conclusions: with an increase in the load from the car on the ground above the conduit, the stresses in the latter have minimal values, which occur at a greater embankment height of the.

Keywords

• total stresses
• conduit structures
• numerical experiment
• soil height
• response function
• clay base