Reinforcement of weak seasonally freezing soils at road consructing by double-cone hollow pile method

[摘要] The article deals with the reinforcement method of weak seasonally freezing soils in subgrade base by using double-cone hollow piles, tridimensional geogrid, geotextile for roads in the northern regions of the Russian Federation. The method of calculating the road base in the form of pile strip foundation of double-cone hollow piles reinforced by tridimensional geogrid and geotextile on weak heaving soils taking into account traffic loads and weight of subgrade is considered. The developed method of calculation is based on the formation of soil compaction zones in the near-pile space as a result of pile driving into the ground, which leads to an increase in the structural strength of the weak soil, and also takes the arch effect that occurs in the soil between adjacent pile heads.

[发布机构] Department of Highways Roads and Bridges, Perm National Research Polytechnic University, Komsomolsky Avenue, 29, Perm; 614990, Russia^1;Department of Design, Graphics and Descriptive Geometry, Perm National Research Polytechnic University, Komsomolsky Avenue, 29, Perm; 614990, Russia^2

[学科分类] 土木及结构工程学

[关键词] Method of calculation;Northern regions;Reinforcement method;Russian federation;Soil compaction;Strip foundation;Structural strength;Traffic loads