Ground Screw is a spiral drill pile, which features a drill bit and a drill rod. The drill bit or drill rod is connected to the power source input connector. After being driven into the ground, it is not taken out and is directly used as a pile body1.
Taking the photovoltaic solar ground screw as an example, its drill bit includes a spiral drill bit at the bottom. The specific structure is that the middle part uses high-quality steel pipes and the top is a connecting pipe; the drill rod includes an upper connecting pipe, a steel rod in the middle, and a lower connecting shaft2.
2. Advantages of Ground Screw
(I) Quality
High-quality material selection: Different steel materials are selected according to the environment and customer needs, and recycled steel is not used. In order to achieve quality indicators, strict quality control is implemented, and the ground piles are hot-dip galvanized after forming17.
(II) Construction
Fast construction and simple installation: No need to dig the land or pour cement, use a pile driver to drive it directly into the ground, which greatly saves construction time and processes.
Low cost: Based on the characteristics of fast construction, most labor costs can be saved. At the same time, compared with the many processes in concrete construction, such as formwork, steel bar bundling, pouring, pre-embedded anchor bars, maintenance, formwork removal, and backfilling of base soil, Ground Screw only needs positioning and piling, which saves material and labor costs.
Recyclable: It can be screwed directly into the soil and can be screwed out when not in use, which is convenient for migration and recycling157.
All-weather construction: It is little affected by the environment and can be constructed under most climatic conditions such as rain, snow, and freezing.
(III) Environmental protection
No pollution: There is no need to dig out the land and will not damage the surface vegetation157.
(IV) Performance
Strong and durable: Choose the right product according to different geology to ensure its mechanical properties. It is suitable for various geology, such as clay, Gobi desert, gravel, etc., and has good tensile pull-out force and insertion grip. It has good high load performance, stability, anti-settlement and anti-pulling properties. It can be widely used in the construction of various ground piles, ground anchors, and random structure ground piles such as end-bearing piles and friction piles.
Good compatibility with the structure: Different screw piles are used according to different customer needs17. High cost performance: It has a good cost performance, can be used for 20 years, and is beautiful and practical7.
3. Uses of Ground Screw
In the field of new energy: It is a new type of solar photovoltaic supporting product, suitable for pile foundations of major solar photovoltaic power stations
