Trapezoid drainage slide-resistant pile with pile with additional toe and construction method thereof

Abstract

The invention discloses a trapezoid drainage slide-resistant pile with a pile with an additional toe and construction method thereof. The trapezoid drainage slide-resistant pile with the pile with theadditional toe is characterized in that the overall cross section of a pile body is trapezoid, the short side surface of the pile body is a soil backing surface, the long side surface of the pile body is a soil facing surface, the pile body is divided into a bottom solid pile body with the additional toe, a lower solid pile body and an upper hollow pile body, the sectional area of the upper hollow pile body is not constant, the sectional area of the upper hollow pile body is gradually reduced from bottom to top, three water collecting spaces are formed in the hollow pile body, the water collecting spaces are connected with a soil facing surface sliding body through water collecting holes, the sectional area of the solid pile body is constant, a drainage cushion layer is arranged at the junction between the solid pile body and the hollow pile body, water diversion holes and drainage holes are formed in the drainage cushion layer, water is drained into a soil facing surface sliding bedthrough the drainage holes, the water collecting spaces, the water diversion holes and the drainage holes are filled with permeable aggregate, and the bottom solid pile body with the additional toe expands all around and has a certain thickness. According to the trapezoid drainage slide-resistant pile with the pile with the additional toe, the soil arching effect can be triggered through the trapezoid cross section shape, the anti-overturning capacity can be improved through the pile with the additional toe, the water content of a sliding body is reduced through self water collection and drainage, and compared with a traditional slide-resistant pile, the material consumption is less.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering and geological engineering, and relates to a trapezoidal toed drainage anti-slide pile and a construction method, which are suitable for soil slope reinforcement greatly affected by rainfall or irrigation. Background technique [0002] As more and more slope sites are developed, geological hazards have become an important factor affecting structures in mountainous areas, and landslides are one of the most frequent geological hazards. Engineers often use retaining walls, anchors, slope cutting and load reduction, back pressure and anti-slide piles to control landslide hazards. Among them, anti-slide piles are easy to construct, cost controllable, and have good treatment effects, and are widely used in shallow and medium layers. landslide. [0003] Southwest China is a high-incidence area of ​​landslides, especially before and after the flood season, which has brought extremely ser...

AI Technical Summary

Problems solved by technology

In soil slopes, due to the lack of one side of the soil, the pile body is prone to overturning as a whole. At this time, increasing the strength of the pile body does not help to improve the anti-sliding ability. Few pile foundations are specially optimized for this point.

The results of existing physical and numerical tests show that the maximum bending moment and maximum shear force on the anti-sliding pile body appear near the sliding surface, but the traditional anti-sliding pile design often adopts a constant cross-sectional shape, which will inevitably lead to certain degree of waste

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