Concrete pre-embedded pile for soft foundation reinforcement

Abstract

The invention discloses a concrete pre-embedded pile for soft foundation reinforcement, and belongs to the technical field of pre-embedded pile reinforcement. According to the concrete pre-embedded pile for soft foundation reinforcement, the scheme is that a pre-embedded pile is pre-embedded into soft soil, and concrete with a temperature is filled into a guide hole, so that concrete is in contactwith a cylindrical gasbag after entering an internal cavity, ammonium hydrogen carbonate in the cylindrical gasbag is heated to decompose and expand and gas pressure at the lower side of the cylindrical gasbag is increased, and therefore, a pre-sealed film is cracked; under return action of an elastic telescopic pole, a deformed rubber bag is extruded towards the outer side, and a contact circular plate is in continuous mutual friction with a spherical gasbag, so that calcium hydrogen carbonate in the spherical gasbag is heated to decompose, the spherical gasbag continuously expands through mutual friction between calcium hydrogen carbonate and quartz sand powder, and a contact area between turned-over deformed rubber bag and soil is increased, and therefore, sink of the pre-embedded pilecan be effectively relieved.

Description

technical field [0001] The invention relates to the technical field of pre-embedded pile reinforcement, in particular to a concrete pre-embedded pile for soft foundation reinforcement. Background technique [0002] Concrete cast-in-situ pile is a kind of pile made by pouring concrete or reinforced concrete in place. No vibration, no soil compaction, but the settlement of the pile is slightly larger. The auger drilling machine is suitable for cohesive soil, sandy soil and artificial filling soil above the groundwater level. Outside the hole, the hole diameter is about 300mm, and the drilling depth is 8-12m. Select the drill pipe according to the soil quality and water content. To form a hole in the layer, in order to prevent the hole from collapsing, use mud to protect the wall, drill in the clay with clear water, and make the mud to protect the wall; inject the prepared mud into the sand and drill, and use the mud circulation to remove the soil under drilling After drillin...

AI Technical Summary

Problems solved by technology

[0004] At present, concrete pre-embedded piles are pre-buried in soft soil for a long time, and settlement may occur. Therefore, in the prior art, extension plates or extension ribs are usually arranged around the pre-embedded piles to increase the distance between the pre-embedded piles and the soil. The stress-bearing area between them can alleviate the settlement of pre-embedded piles, but it increases the filling time of pre-embedded piles and reduces the work efficiency of technicians

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