Stress in the Soil Layer of Anti-Slide Structure

Landslidessoil erosion is one of the most dangerous and common natural phenomena. Landslides are unpredictable, the rate of displacement of a landslide can vary from several meters per year to several meters per second. A landslide can remain dormant for centuries and then suddenly start moving again. Landslide processes can lead to serious damage and destruction of buildings, structures, roads, pipelines, which are built on slopes or next to them. Landslides can be initiated on slopes already at the limit of movement by rainfall, snowmelt, abrasion, erosion, changes in ground water levels on the slope plateau and in landslide accumulations, earthquakes, volcanic activity, human activity, or any combination of these. factors Stabilization of landslide processes and improvement of the overall stability of slopes are possible with the application of engineering protection measures for territories, buildings and structures located on slopes. In cases where it is impossible to eliminate all causes of landslides, retaining anti-slide structures are used. Retaining anti-slide structures provide the ability to perceive shear pressure due to the reactive resistance of stable soil on the surfaces of deep-laying supports, and also prevent the soil of the landslide massif from pushing and crawling through them. One of the effective methods of combating landslides is considered - the arrangement of a number of buttresses from bored piles. When the landslide is held by the specified structure, a soil vault is formed between the bored piles. A method for calculating stresses in the soil layer when arranging a landslide-resistant structure in the form of buttresses from bored piles has been developed. The soil layer between the bored piles is considered as a hingeless circular arch of rectangular cross-section, on which shear pressure acts, evenly distributed over its span. The greatest internal forces and stresses in arches of this type arise near the supports. The calculation of a two-hinged hingeless arch, which has three redundant links, is performed by the force method. Formulas for calculating normal and tangential stresses are given. Given the soil strength and implementing the developed algorithm, it is possible to determine the distance between the buttresses made of bored piles.