Elastic pile foundation resistant to frost heaving damage

Abstract

The invention discloses an elastic pile foundation resistant to frost heaving damage. A top connecting module is installed above a frost heaving buffering module, a gravity column module is installed below the frost heaving buffering module, a lifting disc capable of axially sliding in a supporting shaft is installed in the supporting shaft of the frost heaving buffering module, a first rotating shaft seat is fixedly installed on the edge of the lifting disc, the first rotating shaft seat is in shaft connection with one end of a supporting cross beam, the other end of the supporting cross beam is in shaft connection with a second rotating shaft seat, the second rotating shaft seat is fixedly installed on an elastic buffer strip, a buffer net is fixedly installed on the elastic buffer strip, a lead screw is installed in the top connecting module, a driven gear is fixedly installed at the top end of the lead screw, the driven gear meshes with a driving gear, and the driving gear and a crank rotating shaft are fixedly installed. The elastic pile foundation resistant to frost heaving damage can be adjusted according to the actual frozen soil depth of a project; the elastic pile foundation resistant to frost heaving damage can adapt to repeated freezing and thawing, effectively prevent frost heaving and frost pulling, and has a lasting effect; complete dismantling and recycling can be achieved, and the influence on the environment is small; and modularized assembly facilitates later maintenance, and the maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of anti-frost heave foundations, and in particular relates to an anti-frost heave damage elastic pile foundation. Background technique [0002] Permafrost refers to various soils and rocks that are below zero degrees Celsius and contain ice. Frozen soil is widely distributed in my country, and the total distribution area of ​​permafrost and seasonal frozen soil accounts for almost two-thirds of the entire land area. Permafrost is extremely sensitive to temperature, so the impact of frost heaving and dissolution on permafrost must be taken into account when constructing buildings and other basic structures in permafrost areas. As the seasons alternate, the foundations of facilities in permafrost areas are mostly damaged by repeated freezing and thawing, which often manifests as fracture of the foundation due to the shear force of the frozen soil, lateral inclination or displacement due to non-uniform stress,...

AI Technical Summary

Problems solved by technology

This type of method has the following disadvantages: ① Increase the amount of foundation excavation, consume a large amount of sand and gravel materials, increase manpower consumption and increase construction costs, and later maintenance is difficult and costly; ② Some functions will be lost after repeated freezing and thawing, and its antifreeze The effective period of expansion is not long, and the effect is not good; ③The effective treatment depth of dynamic compaction is limited, and it is easy to affect the nearby buildings; ④The environmental impact is relatively large, and the added hydrophobic substances are not friendly to the environment and are not sustainable

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