Design and Technological Solutions for Construction on Collapsing Soils
The solution to the problem of subsidence in the foundations of transport structures is becoming more and more urgent every year. This is due to the fact that when loess soils are soaked, irregular subsidence occurs, leading to complete or partial destruction of engineering structures and capital pavements on highways. Insufficient consideration of the deformability of structurally unstable soils, the lack of effective preparation of the foundations of structures leads to damage. The article presents an engineering and geological survey of the road section in Almaty (Kazakhstan). The analysis of changes in physical and mechanical properties of collapsing soils is given. According to the results, the type of ground conditions on the subsidence of the designed road section is determined. Taking into account specific properties of soils the efficiency of constructive and technological solutions for construction is justified, several measures are proposed. One of them is the reinforcement by geogrid as the material can bear a big weight of the soil layer and prevents it from displacement due to transport loading and other external factors. These solutions help to eliminate the destruction of the structure, excluding traffic accidents that can cause injury or loss of life.