CN-224227840-U - Photovoltaic support column pile for expansive soil field

Abstract

The utility model discloses a photovoltaic support column pile for an expansive soil field, which comprises a column pile buried in the ground, wherein the upper end of the column pile is higher than the ground and is provided with a steel support, an inclined beam for fixedly mounting a photovoltaic module is arranged on the steel support, the column pile is an integrated column body with equal diameters, the column pile is divided into three parts from top to bottom, namely a photovoltaic support column section, a pile foundation section affected by expansion force and a pile foundation anchoring section, the photovoltaic support column section is positioned above the ground, the pile foundation section affected by the expansion force is positioned at the ground to the bottom elevation of an atmospheric impact steep layer, the pile foundation anchoring section is positioned below the bottom elevation of the atmospheric impact steep layer, and the outer side of the pile foundation section affected by the expansion force is provided with a coating of industrial vaseline or residual oil materials. The scheme has the advantages of simple and convenient measures, low material cost, engineering material saving, construction labor and transportation cost, great reduction of the buried pile length of the pile, great optimization of the pile length and great shortening of the construction period of expansive soil treatment.

Inventors

• ZHANG FU
• ZHANG PENG
• YANG JING
• LI SHUN
• ZHOU JIANJUN
• LI XINGLI
• ZHANG LINGWEI
• ZHANG LIQIANG
• WANG YONGFENG
• JIA HAIXIA
• LI XIA

Assignees

• 中国电力工程顾问集团华北电力设计院有限公司

Dates

Publication Date

20260512

Application Date

20250421

Claims (5)

1. 1. A photovoltaic support column pile for an expansive soil field is characterized by comprising a column pile (1) buried in the ground, wherein the upper end of the column pile (1) is higher than the ground and is provided with a steel support (2), an inclined beam (4) for fixedly mounting a photovoltaic module (3) is arranged on the steel support (2), the column pile (1) is an integrated column body with equal diameters up and down, the column pile (1) is divided into three parts which are connected from top to bottom, the column pile is sequentially a photovoltaic support column section (5), an expansive force affected pile foundation section (6) and a pile foundation anchoring section (7), the photovoltaic support column section (5) is located above the ground, the expansive force affected pile foundation section (6) is located from the ground to the bottom elevation of an atmospheric impact steep layer, the pile foundation anchoring section (7) is located below the bottom elevation of the atmospheric impact steep layer, and a coating of industrial vaseline or residual oil material is arranged outside the expansive force affected pile foundation section (6).
2. 2. The photovoltaic-rack pile for expansive soil fields according to claim 1, characterized in that the pile (1) is a prestressed concrete pile.
3. 3. Photovoltaic support pole for expansive soil fields according to claim 1, characterized in that the outer side of the photovoltaic support pole section (5) is in direct contact with the atmosphere.
4. 4. The photovoltaic module post for expansive soil fields according to claim 1, characterized in that the post (1), the steel support (2) and the diagonal beams (4) form a single post photovoltaic module integrated with the post.
5. 5. The photovoltaic bracket post pile for expansive soil fields according to claim 1, characterized in that the length of pile foundation section (6) affected by expansive force is 1.35 m-2.25 m.

Description

Photovoltaic support column pile for expansive soil field Technical Field The utility model belongs to the technical field of solar photovoltaic power generation, and particularly relates to a photovoltaic support column pile for an expansive soil field. Background In a photovoltaic power plant, the photovoltaic brackets are steel brackets used to support the photovoltaic modules. The single upright is a fixed photovoltaic bracket form which is used at the earliest, and the specific gravity of the single upright in the fixed bracket is higher and higher along with the recent significant horse-feeding of agricultural light complementation, forest light complementation and fishing light complementation projects. The single-upright-post photovoltaic bracket consists of purlines, inclined beams, inclined struts and other steel members for directly supporting the photovoltaic assembly and the single upright posts. The length of the exposed part of the photovoltaic support column is generally determined by the process arrangement requirement and the connection requirement of the photovoltaic support, and the ground entering length is determined according to the load applied to the photovoltaic support column and the rock and soil condition of a field. For an expansive soil field, the length of the pile entering the ground is also resistant to the influence of the atmosphere on the expansion and shrinkage force generated by the rock soil in the range of a steep layer so as to avoid pile foundation instability. At present, the length of an anchor pile is generally required to be increased, so that the pile length is greatly increased, and the increase amplitude of the pile is considerable for a photovoltaic bracket pile foundation with small load and short pile length. Therefore, in expansive soil sites, pile length is generally controlled by the pull-out stability of pile foundations due to the influence of expansive force of expansive soil. Because the photovoltaic support dead weight is very light, the pulling force of the main control working condition is larger, and the rock-soil combined loading of the abrupt layer depth is influenced by the atmosphere to play an adverse role, the increase amplitude of the pile length of the tubular pile after the stable calculation of the expansion pulling is considered to be striking, and the engineering cost can be greatly improved for the pile number of tens of thousands and hundreds of thousands. The optimal pile length can be achieved by changing non-expansion materials such as sand and stone around the pile, carrying out chemical improvement on soil body, arranging a humidity isolation layer and the like, wherein the construction of the modes is complicated, the pile around is required to be excavated after pile sinking by mainly adopting the non-expansion materials are changed around the pile, the huge quantity of pile foundations is considered, the workload is very large, the pile body is easy to influence in the excavation after construction from the aspect of construction difficulty, the construction is required to be slow and careful, the period is also longer, the engineering quantity of outsourcing replacement of the filling materials and outsourcing replacement of the expansion soil body is huge, and the economic cost is huge especially for areas with deep rapid atmospheric influence layers. Disclosure of utility model The utility model aims to solve the technical problems of providing the photovoltaic support post pile for the expansive soil field, solving the problems of higher construction cost, longer construction period and the like of the existing photovoltaic support arranged on the expansive soil field, realizing simple and effective optimization of the buried post length of the photovoltaic support post pile on the expansive soil field, optimizing the total post length, being safe and reliable, being simple and convenient and quick to construct and being capable of achieving better economic index optimization effect. According to the technical scheme, the utility model provides a photovoltaic support column pile for an expansive soil field, which comprises a column pile buried in the ground, wherein the upper end of the column pile is higher than the ground and is provided with a steel support, an inclined beam for fixedly mounting a photovoltaic module is arranged on the steel support, the column pile is an integrated column body with equal diameters from top to bottom, the column pile is divided into three connected parts from top to bottom, namely a photovoltaic support column section, a pile foundation section influenced by expansion force and a pile foundation anchoring section, the photovoltaic support column section is positioned above the ground, the pile foundation section influenced by the expansion force is positioned between the ground and the ground at the bottom elevation of an atmospheric influence steep layer, the pile foundation anchor