Stress releasing cage and method of use thereof

Abstract

The present invention relates to a stress-releasing cage and an application method thereof, which belong to a construction tool and an application method thereof in the construction of a building foundation. The stress-releasing cage is composed of a plurality of vertical reinforcements and a columniform steel wire net, and the vertical reinforcements are all firmly connected with the columniform steel wire net. In the application method, stress-releasing holes arranged in the shape of a Z are drilled on the site of the building foundation, the spacing between each two stress-releasing holes is equal to the spacing between each two building foundation piles, and the row spacing is zero point six five to one times wider than the hole spacing; the back row of stress-releasing holes in the Z-shaped arrangement of the stress-releasing holes are the pile positions of the building foundation piles; the placement of the stress-releasing holes and the stress-releasing cage is carried out in different positions as the pile sinking construction of the building foundation piles is carried out. Compared with the prior art, because the constituent elements of the present invention are lesser, the in-site fabrication is easier and more convenient, and moreover, the present invention adopts the arrangement of the stress-releasing holes and the stress-releasing cage, which can successfully control the displacement of soil body within about 20mm to 30mm. By applying the present invention, the construction rate is increased, and the number of sunken piles is increased from seven per day to sixteen to eighteen per day, thus reducing the construction cost. The detection on the bearing capability of the pile foundation indicates that the bearing capability of the pile foundation is not affected.

Description

Technical field: [0001] The invention relates to a stress release cage and an application method thereof, belonging to fixed buildings and foundations, construction tools used in building foundation construction and an application method thereof. Background technique: [0002] In the prior art, during the construction of the building foundation, the prefabricated pile will squeeze the soil around the pile during the pile sinking process, and generate ultra-static pore water pressure, and the uplift and displacement of the soil will affect the surrounding buildings. A lot of work has been done to produce damage, cracking or inclined settlement. For example, a stress relief cage is disclosed in Chinese patent ZL200620040943.8. It consists of a number of vertical bars and a number of horizontal bars to form a column, and the braid is wound around the outer edge of the column. During construction, it is inserted into the stress release hole to quickly release the soil compaction...

AI Technical Summary

Problems solved by technology

It consists of a number of vertical bars and a number of horizontal bars to form a column, and the braid is wound around the outer edge of the column. During construction, it is inserted into the stress release hole to quickly release the soil compaction stress and consolidation soil disturbance after sinking the pile. Its disadvantage is that it is more troublesome to make on the construction site, and it does not provide its application method

The article discloses the method of controlling pile density, pile sinking rate, excavating anti-vibration ditch and stress release hole to pre-control the soil squeezing effect during pile sinking. Its shortcoming is to reduce the extrusion of pile sinking. effect, the density of piles must be controlled and the pile sinking rate cannot meet the requirements of tight construction period and protection of surrounding buildings

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