Grouped pile structure for preventing and treating landslide and construction method thereof

Abstract

The invention discloses a grouped pile structure for preventing and treating landslide and a construction method thereof. The grouped pile structure comprises main anti-slide piles and secondary anti-slide piles arranged among the main anti-slide piles; main top beams are poured and connected between every two anti-slide piles; secondary top beams are poured and connected between each secondary anti-slide pile and each of the two neighboring main anti-slide piles; the diameters at the middle parts of the main anti-slide piles are larger than the diameters of the upper parts and the lower parts of the main anti-slide piles; and stirrups at the middle parts of the main anti-slide piles and the secondary anti-slide piles are thickened. The construction method comprises the following steps of: determining the positions of the main anti-slide piles and the secondary anti-slide piles; excavating holes for the main anti-slide piles and the secondary anti-slide piles; respectively presetting steel reinforcement cages of the main anti-slide piles and the secondary anti-slide piles and respectively placing the steel reinforcement cages into corresponding holes, pouring concrete, and carrying out upper hole shrinkage treatment when the concrete is poured on the upper parts of the main anti-slide piles; and finally pouring the main top beams and the second top beams. According to the grouped pile structure and the method, under the premise that distances among piles are not decreased, the extrusion and the damage of earth among the piles can be prevented effectively, and meanwhile, the whole force resistant performance and the anti-slide capability of the anti-slide piles are intensified, and thus the engineering cost is saved.

Description

technical field [0001] The invention relates to a pile foundation structure in an underground foundation structure, in particular to a pile group structure for preventing landslides and a construction method thereof, which is suitable for building construction slopes, road slopes and various natural slopes. Background technique [0002] Affected by natural dynamics such as earthquakes and heavy rainfall, as well as artificial excavation of the slope toe due to actual engineering needs, etc., the slope will become unstable and landslides will occur. [0003] At present, the anti-slide piles used to prevent landslides mainly use a single large-diameter reinforced concrete pile. The parabolic distribution of the two, the inconsistency between the two caused the waste of some materials. In addition, due to the large pile distance of the current anti-slide piles, although the overall stability can be satisfied, the extrusion damage of the soil between the piles occurs from time ...

AI Technical Summary

Problems solved by technology

[0003] At present, the anti-slide piles used to prevent landslides mainly use a single large-diameter reinforced concrete pile. Parabola-like distribution, the inconsistency between the two causes waste of some materials

In addition, due to the large pile distance of the current anti-slide piles, although the overall stability can be satisfied, the extrusion damage of the soil between the piles occurs from time to time, and reducing the pile distance will greatly increase the project cost and construction period

Images