Article

Received 31.01.2024

Revised 29.05.2024

Accepted 30.06.2024

Retrieved from Iss. 115, P. 2, 2024

Pages 137 -146

Petrovych, V., & Kаsai, K. (2024). STUDY OF PRECIPITATION CHARACTERISTICS FOR CALCULATIONS OF SURFACE WATER DRAINAGE AND MOISTURE INFILTRATION INTO THE SOIL OF ROAD SUBGRADE. Automobile Roads and Road Construction, (115.2), 137-146. https://doi.org/10.33744/0365-8171-2024-115.2-137-146

STUDY OF PRECIPITATION CHARACTERISTICS FOR CALCULATIONS OF SURFACE WATER DRAINAGE AND MOISTURE INFILTRATION INTO THE SOIL OF ROAD SUBGRADE

Volodymyr Petrovych Kostiantyn Kаsai

The article examines the impact of precipitation characteristics on surface drainage and moisture infiltration into the soil of road embankments. Relevance. In light of the full-scale invasion of the Russian Federation into Ukraine, the construction of new roads and the reconstruction of existing ones have been relegated to the background. However, issues related to road construction, especially those requiring scientific justification, must be addressed today. The reliability and durability of pavement significantly depend on the condition of the soil foundation, which serves as the basis for the entire structure. Analysis of numerous reports on road sections with defects in the embankment and pavement indicates that the primary cause of these defects is the excessive moisture in the working area soil, caused by inadequate drainage, defects in the pavement, insufficient soil compaction, and the use of unsuitable materials. Problem Statement. The issues of ensuring proper drainage and the water-thermal regime of road structures require detailed study. Moisture from atmospheric precipitation has a decisive impact on the deformation and destruction of road structures, making consideration of this factor extremely relevant. The authors of the article note that the study of the impact of atmospheric precipitation on road structures and the soil of road embankments requires further scientific research. Objective. The article considers approaches to calculating surface drainage and moisture infiltration into the soil, taking into account precipitation intensity, which is one of the key parameters in the design of drainage systems, selection of embankment soil, and other elements of road structures. Methods for improving these calculations are proposed, particularly regarding the consideration of the duration and intensity of precipitation, which allows for enhancing the economic and technical efficiency of design solutions. Conclusions. A review of scientific research on the classification and characteristics of precipitation was conducted. Based on the analysis, the following average precipitation intensities are recommended for further calculations and research: for the entire territory of the country (excluding mountainous regions) – 1.26 mm/min; for Crimea – 1.50 mm/min; for the Carpathians – 1.78 mm/min

highway, moisture, soil, rain, embankment, infiltration, precipitation
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https://doi.org/10.33744/0365-8171-2024-115.2-137-146