REINFORCING THE BULK OF INNER-FIELD VEHICLES ON A WEAK BASE AS A DECISION TO REDUCE THE SIZE OF THE DRAIN OF THE SUBGRADE

Abstract

The relevance of the research is caused by the need to build an earthen bed, including an earthen bed of intra-field roads on the territory of NK Rosneft PJSC, in difficult engineering and geological conditions. At the same time, the total length of roads is several thousand kilometers. It is also necessary to note the emergence of a huge assortment of geotextile reinforcing materials, the use of which is a modern effective way to solve the problem of improving the reliability of earthworks, including the issue of reducing the precipitation of embankments of the earthwork, which should lead to optimization of funds by reducing the volume of earthworks. The main aim of the research is to optimize capital expenditures for the construction of intra-field roads on a weak base due to reinforcement of embankments with local (lay flooring) or geosynthetic materials. Object: soil embankment. Subject: sedimentary phenomena of the soil of the earth on a weak base, depending on the type of fortification. Methods: retrospective analysis and comparison method. The precipitation was calculated by layer-by-layer summation, and a graphoanalytic method was used to determine the final precipitation Skon and the calculated load P. To calculate the settlement of the embankment, taking into account the reinforcement of the roadbed with a sunbed or geo-nut, a mathematical modeling method was also used. Results. The paper introduces the calculations of substantiation of perspective of applying the alternative materials at strengthening roadbed on weak base. To confirm the cost-effectiveness of the proposed solutions, a technical and economic comparison of two options for reinforcing the structure of the roadbed was made: a bed flooring and a geo-nut – with a model without reinforcement. The economic effect of using the reinforcement of the roadbed on a weak base was determined.

Keywords

• subgrade
• subgrade reinforcement structures
• lay flooring
• geogrid
• maximum stress
• degree of embankment stability
• final embankment settlement