Solar photovoltaic support foundation in frozen soil area and construction method

Abstract

The invention provides a frozen soil area solar photovoltaic support foundation and a construction method, the frozen soil area solar photovoltaic support foundation comprises a pile foundation, the pile foundation comprises a stand column section and an anti-pulling section, the anti-pulling section is integrally arranged at the bottom of the stand column section, air bag sleeve rods are arranged on the side edge of the stand column section in an annular array mode, and compensation air bags are arranged in the air bag sleeve rods; the bottom of each lifting piston is fixedly provided with an extrusion seat through a telescopic connecting rod, and the gravity ball is movably arranged in a swing groove formed in the anti-pulling section. The compensation air bags arranged on the side edges of the stand column sections are used for counteracting longitudinal and transverse extrusion, caused by seasonal frozen soil frost heaving, of surrounding soil, and the compensation air bags are used for compensating the thaw collapse phenomenon caused by melting of ice columns in surrounding geology after the frozen soil is melted. And the upright post can be corrected through the same-side expansion of the compensation air bag, so that the stability of the pile foundation is greatly improved.

Description

technical field [0001] The invention relates to the technical field of permafrost pile foundations, in particular to a solar photovoltaic support foundation and a construction method in permafrost regions. Background technique [0002] An anti-freezing foundation pile for photovoltaic supports in permafrost areas and a construction method thereof disclosed in the prior art with the publication number "CN106917406A", mainly include: a protective tube and a concrete pile; the protective tube includes a polystyrene plastic foam board , expansion bolts, ventilation holes, waterproof layer, insulation layer, polystyrene plastic foam board is a cylindrical barrel structure, the inner side of the barrel is attached to the insulation layer, the outer side of the barrel is attached to the waterproof layer, the ventilation holes are distributed on the barrel wall, and the ventilation holes The depth is the same as the thickness of the polystyrene plastic foam board, and the expansion ...

AI Technical Summary

Problems solved by technology

[0003] However, the antifreeze foundation piles of the photovoltaic support in the above-mentioned permafrost region still have obvious defects during use: 1. The above-mentioned devices and the pile foundations in the prior art are all used to ensure that the frost heaving and pullout resistance is reduced. The pile foundation is stable, but the frost heave spreads unevenly inside the geological layer, which leads to the lateral extrusion of the surrounding geology of the frost heave, which leads to the inclination of the pile foundation. In the prior art, the pile foundation is automatically increased to resist lateral stress , although this method has a certain effect, the volume of concrete pouring required is relatively large, thereby increasing the pouring cost; 2. For seasonally frozen soil, the pile foundation not only needs to face the problem of frost heaving, but also needs to face The melting settlement phenomenon caused by the existing technology does not effectively solve the melting settlement problem, which leads to the inability to guarantee the stability of the pile foundation after installation

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