Pile foundation structure of photovoltaic power station and construction process of pile foundation

Abstract

The invention provides a pile foundation structure of a photovoltaic power station, which is suitable for construction of the photovoltaic power station in a desolate beach of Gobi with a complex geologic structure. The pile foundation structure of the photovoltaic power station is characterized by comprising a prefabricated steel pile and a pile hole vertical to the horizontal plane. The prefabricated steel pile is installed in the pile hole and inserted into a soil layer at the bottom of the pile hole and the top of the prefabricated steel pile extends out of the ground. A concrete layer is poured between the hole wall of the pile hole and the prefabricated steel pile. A compact pure soil layer is backfilled on the upper part of the concrete layer. The invention further provides a construction process of the pile foundation of the photovoltaic power station. The construction process is simple in process and low in cost, and the ecological environment is not easy to damage. The construction process of the pile foundation of the photovoltaic power station is characterized by comprising the steps of: first, drilling the pile hole by a large excavator; then, inserting the prefabricated steel pile into the soil layer at the bottom of the pile hole through the pile hole; then, pouring concrete into the pile hole and vibrating with a vibrator while pouring the concrete; and finally, backfilling the pure soil and compacting on the upper part of the concrete layer.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power station construction, in particular to a pile foundation structure and pile foundation construction technology of a photovoltaic power station. Background technique [0002] Generally, the foundation of a photovoltaic power station is an independent box-shaped foundation. The construction is to excavate the foundation pit first, then assemble the foundation formwork into a box shape in the foundation pit, and then pour concrete in the box-shaped formwork, and remove it after the concrete curing period expires. Formwork is enough, and its construction technology is simple, but it is only suitable for areas with relatively uniform and single geological structure and relatively soft soil. Hard, and the ground contains a lot of gravel, so its construction is difficult, inefficient, and costly; in addition, large-scale excavation of foundation pits in such areas will seriously damage the sur...

AI Technical Summary

Problems solved by technology

[0002] Generally, the foundation of a photovoltaic power station is an independent box-shaped foundation. The construction is to excavate the foundation pit first, then assemble the foundation formwork into a box shape in the foundation pit, and then pour concrete in the box-shaped formwork, and remove it after the concrete curing period expires. Formwork is enough, and its construction technology is simple, but it is only suitable for areas with relatively uniform and single geological structure and relatively soft soil. Hard, and the ground contains a lot of gravel, so its construction is difficult, inefficient, and costly; in addition, large-scale excavation of foundation pits in such areas will seriously damage the surface vegetation, thereby affecting the fragile ecology of the area surroundings

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