A micro-porous pile foundation for photovoltaic fixed support

Abstract

The utility model discloses a photovoltaic fixed support micro-porous pile foundation, comprising a micro-porous pile foundation and a photovoltaic fixed support (8), wherein the micro-porous pile foundation comprises micro-porous pile planting reinforcement (1) and a micro-porous pile anchor rod (2), wherein the lower half of the micro-porous pile planting reinforcement (1) is arranged in the micro-porous pile anchor rod (2), and the lower half of the micro-porous pile planting reinforcement (1) and the micro-porous pile anchor rod (2) are arranged under the rock foundation surface (3); the upper half of the micro-porous pile planting reinforcement (1) is arranged in the micro-porous pile foundation pedestal (4), and the micro-porous pile foundation pedestal (4) is also provided with longitudinal reinforcement (6) and spiral hoop reinforcement (5) for fixing. In view of the steep slope of mountain photovoltaic construction that cannot be constructed with large equipment, a manual punching machine is used to complete the micro-porous pile drilling and foundation construction tasks to meet the construction needs.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy photovoltaic power generation, and in particular to a micro-hole pile foundation of a photovoltaic fixed support. Background Art

[0002] The existing 20MW photovoltaic power station is located at an altitude of 1700m to 2160m. The regional structural stability of the project area is poor, the terrain slope ranges from 15° to 39°, and more than 70% of the entire photovoltaic field has a slope of 30° to 39°; the photovoltaic panels are arranged facing north and south, but due to the steep slope, the entire photovoltaic field is planned to adopt a layered construction plan for the drilling platform, and the slope of the drilling platform ranges from 1.38° to 30.14°, and more than 60% ranges from 20 to 30.14°. The site cover is mostly thin (average thickness 30cm), and locally thick (60cm), mostly rock slopes, and the rock types are moderately weathered to slightly weathered dolomite, limestone, strongly weathered sandstone, sandy mudstone, etc.

[0003] The following problems occurred during the construction of the photovoltaic power station:

[0004] The entire project area is steep, and due to the land acquisition area and panel layout of the photovoltaic field, the construction of the field maintenance road is subject to great layout restrictions, resulting in a small and steep turning radius, making it impossible for the excavator to work normally;

[0005] The construction of the drilling rig layered platform was based on the Z-shaped maintenance road on the site, and the drilling platform was built on both sides of the maintenance road. However, due to the large overall slope of the mountain, the maintenance road on the site could not be built, resulting in the inability to normally build the drilling rig layered platform;

[0006] The photovoltaic field is adjacent to civil buildings and facilities outside the Hong line range, which brings great difficulties to safety protection during the construction of the drilling platform;

[0007] Due to the steep terrain in the photovoltaic field area, continuing to use the original plan to build on-site maintenance roads and drilling rig layered platforms not only brings safety construction risks, but also fails to achieve the goal of grid-connected power generation within the equipment. Utility Model Content

[0008] The purpose of the utility model is to provide a micro-porous pile foundation for a photovoltaic fixed bracket in response to the above-mentioned problems. In mountainous photovoltaic areas where the slope is steep and large-scale equipment cannot be used for construction, a manual drilling machine is used to complete the micro-porous pile drilling and foundation construction tasks to meet the construction needs.

[0009] The technical solution of the utility model is as follows:

[0010] A photovoltaic fixed support micro-porous pile foundation comprises a micro-porous pile foundation and a photovoltaic fixed support, wherein the micro-porous pile foundation comprises micro-porous pile rebars and micro-porous pile anchor rods, wherein the lower half of the micro-porous pile rebars are arranged in the micro-porous pile anchor rods, and the lower half of the micro-porous pile rebars and the micro-porous pile anchor rods are arranged under the rock foundation surface; the upper half of the micro-porous pile rebars are arranged in the micro-porous pile foundation pedestal, and the micro-porous pile foundation pedestal is also provided with longitudinal reinforcement and spiral stirrups for fixation.

[0011] Furthermore, the at least two longitudinal bars are arranged around the micro-porous pile reinforcement, and the spiral stirrups are arranged around the micro-porous pile reinforcement and the at least two longitudinal bars.

[0012] Furthermore, the microporous pile foundation cap is a fine stone concrete base.

[0013] Furthermore, the micro-porous pile rebars and micro-porous pile anchor rods are densely filled with cement mortar.

[0014] Furthermore, U-shaped bolts are also provided in the micro-porous pile foundation pedestal, and the micro-porous pile foundation pedestal is fixedly connected to the photovoltaic fixed bracket by the U-shaped bolts.

[0015] Furthermore, the micro-porous pile reinforcement is ribbed threaded steel with a diameter of 25 mm.

[0016] Compared with the existing technology, the beneficial effects of the utility model are:

[0017] 1. A micro-porous pile foundation for photovoltaic fixed brackets. The construction process of the micro-porous pile foundation is simple, efficient and convenient. Through the proficiency of the manual drilling machine, the reinforcement planting and foundation pouring process can be carried out immediately after the drilling is completed. The flexible and convenient performance of small equipment is fully utilized to successfully solve the construction problem of mountain photovoltaic with steep slopes and unable to use large equipment such as excavators to build layered platforms, drill holes, and pour cast-in-place piles;

[0018] 2. A photovoltaic fixed support micro-hole pile foundation ensures construction safety, improves installation efficiency and reduces construction costs through scientific and reasonable calculations, experimental demonstrations and correct selection of tools and tools;

[0019] 3. A micro-porous pile foundation for photovoltaic fixed bracket overcomes unfavorable factors such as geographical location and environmental restrictions, and successfully solves the problem that large-scale equipment cannot be used for drilling holes due to steep slopes in mountain photovoltaics. It ensures the installability and safety of photovoltaic fixed brackets and greatly improves work efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of micro-porous pile reinforcement for a micro-porous pile foundation of a photovoltaic fixed support.

[0021] Figure 2A schematic diagram of a micro-porous pile foundation for a photovoltaic fixed support micro-porous pile foundation.

[0022] Figure 3 This is a schematic diagram of the assembly of microporous piles and brackets for a microporous pile foundation of a photovoltaic fixed bracket.

[0023] Figure numerals: 1-microporous pile anchor, 2-microporous pile anchor, 3-rock base surface, 4-microporous pile foundation cap, 5-spiral stirrups, 6-longitudinal reinforcement, 7-U-bolts, 8-photovoltaic fixing bracket. DETAILED DESCRIPTION

[0024] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0025] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0026] See also Figure 1-3 , a photovoltaic fixed support micro-hole pile foundation, including a micro-hole pile foundation and a photovoltaic fixed support 8, such as Figure 1 As shown, the micro-porous pile foundation includes a micro-porous pile reinforcement 1 and a micro-porous pile anchor rod 2. The lower half of the micro-porous pile reinforcement 1 is arranged in the micro-porous pile anchor rod 2, and the lower half of the micro-porous pile reinforcement 1 and the micro-porous pile anchor rod 2 are arranged under the rock foundation surface 3; the upper half of the micro-porous pile reinforcement 1 is arranged in the micro-porous pile foundation cap 4, as shown in FIG. Figure 2 As shown, longitudinal reinforcement 6 and spiral stirrups 5 for fixing are also arranged in the micro-porous pile foundation cap 4.

[0027] At least two longitudinal bars 6 are arranged around the micro-porous pile reinforcement 1 , and the spiral stirrups 5 are arranged around the micro-porous pile reinforcement 1 and the at least two longitudinal bars 6 .

[0028] The micro-porous pile foundation cap 4 is a fine stone concrete base.

[0029] The space between the micro-porous pile rebar 1 and the micro-porous pile anchor rod 2 is densely filled with cement mortar.

[0030] like Figure 3As shown, a U-shaped bolt 7 is also provided in the micro-porous pile foundation pedestal 4 , and the micro-porous pile foundation pedestal 4 is fixedly connected to the photovoltaic fixing bracket 8 through the U-shaped bolt 7 .

[0031] The micro-porous pile reinforcement 1 is a ribbed threaded steel bar with a diameter of 25 mm.

[0032] The micro-porous pile foundation construction process is simple, efficient and convenient. Through the proficiency of the manual drilling machine, the reinforcement planting and foundation pouring process can be carried out immediately after the drilling is completed. By making full use of the flexible and convenient performance of small equipment, it has successfully solved the construction problem of mountain photovoltaic with steep slopes and unable to use large equipment such as excavators to build layered platforms, drill holes, and pour cast-in-place piles.

[0033] Through scientific and reasonable calculations, experimental demonstrations, and correct selection of tools and equipment, we ensure construction safety, improve installation efficiency, and reduce construction costs.

[0034] It has overcome unfavorable factors such as geographical location and environmental restrictions, and successfully solved the problem of mountain photovoltaics that cannot use large equipment to drill holes due to steep slopes, ensuring the installability and safety of photovoltaic fixed brackets, and greatly improving work efficiency and economic benefits.

[0035] Workflow

[0036] Before the micro-porous pile foundation is officially implemented, a micro-porous pile foundation test must be carried out in advance;

[0037] The micro-porous pile foundation construction site needs to be leveled to make the terrain within the concrete pouring range as level as possible; the anchor bar foundation construction site needs to be completely cleared, and the surface cover layer (surface soil, gravel, vegetation and other debris) must be completely cleaned to ensure that the foundation construction site is completely exposed bedrock;

[0038] The air compressor, high-pressure air pipe, and manual drilling machine (commonly known as the little bee) have been debugged and put in place, and safety and civilized construction preparations and occupational health protection measures have been made;

[0039] Manual drilling machine drilling The drilling depth is ≥1050mm. During construction, if the rock mass is broken or incomplete or isolated, this solution is not feasible.

[0040] After drilling the micro-porous pile reinforcement hole, remove the sediment in the hole, and the thickness of the loose soil at the bottom of the hole should be ≤20mm. The hole can be cleaned with a high-pressure air pipe. If the surrounding rock structure is poor, high-pressure air pipe cleaning will cause the hole to collapse, so a digging spoon can be used to clean the hole manually.

[0041] After the micro-porous pile reinforcement holes are accepted, anchor reinforcement can be carried out immediately. The anchor bar should be placed in the center of the anchor bar hole. The grouting quality should be strictly controlled during construction to ensure the strength of the anchor body. The hole wall and the anchor bar should be densely filled with M30 cement mortar and well maintained. The holes that are not planted in time should be sealed with sandbags.

[0042] The upper cap of the micro-porous pile is a foundation with a diameter of 400mm and a height of 800mm. The reinforcement is carried out according to the structural requirements. The horizontal protective layer is 50mm and the longitudinal protective layer is 40mm thick. The cap foundation is made of C30 fine stone concrete. The bedrock at the anchor foundation construction point must be roughened before pouring the upper foundation cap to strengthen the bonding force between the rock foundation surface and the upper concrete cap base. At the same time, the M18U bolts are pre-buried and the cap maintenance work is done well.

[0043] During the construction of micro-porous pile foundation structure, corresponding auxiliary measures should be taken to fix the anchor bars, so as to strictly control the top elevation, horizontal position, verticality, etc. of the anchor bars and the foundation cap to meet the design requirements. At the same time, the construction quality of the concrete base should be strictly controlled to ensure the reliability of the bonding between the anchor bars and the foundation cap concrete body and the integrity of the foundation structure;

[0044] After the micro-porous pile foundation is completed, the photovoltaic fixed bracket can be installed.

[0045] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A photovoltaic fixed support micro-hole pile foundation, characterized in that: The invention comprises a microporous pile foundation and a photovoltaic fixed support (8), wherein the microporous pile foundation comprises microporous pile reinforcement bars (1) and microporous pile anchor rods (2), wherein the lower half of the microporous pile reinforcement bars (1) are arranged in the microporous pile anchor rods (2), and the lower half of the microporous pile reinforcement bars (1) and the microporous pile anchor rods (2) are arranged under a rock foundation surface (3); the upper half of the microporous pile reinforcement bars (1) are arranged in a microporous pile foundation pedestal (4), and longitudinal reinforcement bars (6) and spiral stirrups (5) for fixing are also arranged in the microporous pile foundation pedestal (4).

2. A photovoltaic fixed support micro-porous pile foundation according to claim 1, characterized in that: At least two longitudinal bars (6) are arranged around the microporous pile reinforcement (1), and the spiral stirrups (5) are arranged around the microporous pile reinforcement (1) and the at least two longitudinal bars (6).

3. A photovoltaic fixed support micro-hole pile foundation according to claim 1, characterized in that: The micro-porous pile foundation cap (4) is a fine stone concrete base.

4. A photovoltaic fixed support micro-hole pile foundation according to claim 1, characterized in that: The space between the micro-porous pile rebar (1) and the micro-porous pile anchor rod (2) is densely filled with cement mortar.

5. The photovoltaic fixed support micro-hole pile foundation according to claim 1, characterized in that: A U-shaped bolt (7) is also provided in the micro-porous pile foundation pedestal (4), and the micro-porous pile foundation pedestal (4) is fixedly connected to the photovoltaic fixing bracket (8) via the U-shaped bolt (7).

6. A photovoltaic fixed support micro-hole pile foundation according to claim 1, characterized in that: The micro-porous pile reinforcement (1) is a ribbed threaded steel bar with a diameter of 25 mm.

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