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HYDRODYNAMICS AND ACOUSTICS
2021 ◊ Volume 2 (92) ◊ Issue 2 ◊ p. 111-125
A. I. Bileush*, V. L. Fridrihson*, O. I. Kryvonog*, V. V. Kryvonog*, P. Yu. Romanenko*
* Institute of Hydromechanics of NAS of Ukraine, Kyiv, Ukraine
Research of construction structures to ensure the stability of landslide-prone slopes reinforced with geosynthetic materials
Gidrodin. akust. 2021, 2(2):111-125
TEXT LANGUAGE: Ukrainian
ABSTRACT
Landslides belong to the class of the most dangerous phenomena in the built-up areas of natural slopes. They can lead to the destruction of buildings and human casualties. Therefore, the justification of protective measures to increase the stability of slopes is of great practical importance. The article presents the results of studies of new designs of anti-landslide structures for securing landslide-prone slopes reinforced with geosynthetic materials. They can perform several functions, namely, to perceive landslide loads of the soil slope as a supporting structure and to drain water as a drainage structure. With the help of an experimental stand, physical modeling of the operation of the proposed structures in the form of wells or excavations was carried out. At the same time, a mathematical model was developed, and the work of soil-reinforced structures in slopes was simulated in a two-dimensional formulation, taking into account the variable properties of soils. Computations were made in the software environments Mathcad 15 and PLAXIS 2D. A degree of agreement between experimental and numerical data and correlation of the calculations by both methods are acceptable for engineering needs. The developed structures reduce deformations by two to four times compared with an unfixed slope, depending on the thickness of the soil-reinforcing element. Therefore, carrying out such measures essentially increases the stability of slopes, including those weakened by plastic clay interlayers. The soil-protective structures in the form of grooves reinforced with geotextile arranged in a row can effectively resist landslides. It allows for reducing construction costs compared to traditional engineering solutions without reducing the requirements for the safety of structures. Thus, the expediency of using geosynthetic materials in fixing landslide-prone slopes has been demonstrated.
KEY WORDS
constructions of landslide prevention structures, geosynthetic materials, mathematical model