Mechanical light nail thorn anchoring pile and construction method

Abstract

The invention discloses a mechanical light nail thorn anchoring pile and a construction method. The anchoring pile comprises an anchoring pile body, a pile cap arranged at the upper end of the anchoring pile body, a pile shoe arranged at the lower end of the anchoring pile body, a drilling mechanism arranged at the bottom of the pile shoe and an impact pile. The anchoring pile body comprises an outer pipe and an inner pipe which is arranged on the inner side of the outer pipe and can be separated under the action of radial pressure, a plurality of nail thorns are distributed on the outer wall of the inner pipe, and a plurality of holes matched with the nail thorns are formed in the outer pipe. The inner pipe is formed by splicing a plurality of pipe pieces, the inner pipe expands outwards in the radial direction after the impact pile is driven in, and nails on the outer wall of the inner pipe penetrate through the holes to be unfolded. The nail thorns on the inner pipe penetrate into the rock stratum of the soil layer to form the uplift bearing capacity, the uplift bearing capacity can be rapidly formed under the non-grouting working condition, the uplift bearing capacity can be used after the light anchoring pile is driven into the soil layer on site, and the requirements for rapid emergency repair and emergency rescue are met.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a mechanical light nail-piercing anchor pile and a construction method. Background technique [0002] At present, the anchoring technology mostly adopts the drilling and grouting technology, which has the following limitations: First, the anchoring body needs a maintenance period to form the uplift bearing capacity after grouting, and the anchoring force takes a long time to take effect; second, the grouting construction process is complicated, the raw material is heavy, and transportation is difficult. Especially for mountainous areas with inconvenient traffic, coupled with the destruction of natural disasters, fast anchoring and repair is still an urgent problem in emergency rescue. The applicant team has done preliminary research on light-duty anchor piles, such as Chinese patents CN2019104288010, CN 2020100904942, etc., and now further develops a mechanical...

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Problems solved by technology

[0002] At present, the anchoring technology mostly adopts the drilling grouting technology, which has the following limitations: First, the anchoring body needs a maintenance period to form the uplift bearing capacity after grouting, and the anchoring force takes a long time to take effect; second, the grouting construction process is complicated, the raw material is heavy, and transportation is difficult

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