Solar aluminum ground mount installation systems are widely adopted in distributed and centralized photovoltaic power stations due to their lightweight properties, high corrosion resistance, easy processing and convenient installation. Compared with traditional steel brackets, aluminum alloy mounts feature lower construction difficulty, longer service life and better environmental adaptability, which can effectively reduce the overall operation and maintenance cost of solar power projects. However, the installation quality of aluminum ground mounts directly affects the structural stability, power generation efficiency and service life of the entire photovoltaic system. Standardized construction and strict compliance with installation precautions are essential to avoid structural deformation, equipment damage and potential safety hazards. This article systematically sorts out the key precautions for the whole installation process of solar aluminum ground mount systems, covering pre-construction preparation, on-site installation specifications, safety operation standards and post-installation acceptance and maintenance.

1. Pre-Construction Preparation Precautions

1.1 Site Survey and Geological Confirmation

Site geological condition is the core foundation for the stable installation of aluminum ground mount systems. Before construction, a comprehensive site survey must be carried out to clarify key parameters including soil type, soil hardness, groundwater level, terrain slope and wind and snow load of the project area. Aluminum alloy brackets have good ductility but lower rigidity than steel brackets, so they are more sensitive to uneven foundation settlement and extreme terrain stress. For loose sandy soil, muddy soil and low-lying waterlogged areas, targeted foundation reinforcement measures such as pile foundation deepening and concrete pouring fixation are required to prevent bracket inclination and collapse caused by foundation displacement in the later stage. In addition, it is necessary to confirm the local extreme wind speed, snowfall and seismic grade, and select aluminum mount models and installation schemes that meet regional load standards to ensure structural wind resistance and snow resistance performance.

1.2 Material Inspection and Storage Management

All aluminum alloy brackets, connecting bolts, fasteners and accessories must be strictly inspected before entering the construction site. First, check the product qualification certificate, performance test report and anti-corrosion coating inspection report to ensure that the aluminum profile meets industry standards for thickness, hardness and anodizing treatment. Unqualified products with surface scratches, oxidation peeling, deformation and insufficient wall thickness are strictly prohibited from use. Second, classify and store materials in a standardized manner: aluminum profiles should be placed on flat wooden brackets to avoid direct contact with the ground and prevent moisture and friction damage; stainless steel bolts, nuts and gaskets should be stored in sealed packaging to avoid dust and moisture rusting. It is forbidden to stack heavy objects on aluminum profiles to prevent permanent deformation of the profiles, which will affect the assembly accuracy.

1.3 Construction Scheme and Tool Preparation

Before on-site construction, formulate a targeted installation construction scheme according to the site terrain, project scale and equipment parameters, and clarify the installation spacing, inclination angle, row spacing and foundation embedding depth of the brackets. The scheme must comply with local photovoltaic construction specifications and wind-resistant structural design standards. Meanwhile, prepare professional construction tools including torque wrenches, level gauges, theodolites and measuring tapes, and check the accuracy and calibration status of the tools to ensure precise construction. In addition, arrange professional construction personnel to conduct pre-construction technical disclosure, clarify installation process standards, key risk points and safety operation specifications, and ensure that all construction personnel are familiar with the overall process and operation requirements.

2. On-Site Installation Process Precautions

2.1 Foundation Construction Standardization

The foundation construction determines the overall stability of the aluminum ground mount system, and is the most critical link in the installation process. Common foundation forms for aluminum ground mounts include spiral pile foundations, concrete independent foundations and strip foundations. During construction, the foundation position must be accurately positioned according to the drawing design, and the deviation of horizontal and vertical coordinates must be controlled within the allowable error range. For spiral pile foundations, the verticality of piling must be guaranteed, and the piling depth should reach the design standard; it is forbidden to stop piling halfway or adjust the angle arbitrarily due to hard soil layers. For concrete foundations, the concrete strength grade, reinforcement specification and foundation size must strictly comply with the design requirements, and the concrete must be fully cured before bracket installation to avoid foundation cracking and strength insufficiency.

In addition, the foundation surface must be kept flat, and the height difference of each foundation base should be controlled within a small range to avoid uneven stress on the aluminum bracket after installation, resulting in profile deformation and loose connection. For slopes and undulating terrain, adopt segmented leveling and adaptive installation schemes to ensure that each group of brackets is stressed evenly and the overall structure is coordinated and stable.

2.2 Bracket Assembly and Connection Specifications

Aluminum alloy brackets are assembled in a modular way, and standardized assembly is the key to ensure structural stability. During assembly, the profiles must be spliced in strict accordance with the installation sequence of the drawings, and the installation direction and position of main beams, secondary beams and supporting columns must not be reversed or misplaced. All connecting bolts should be matched with special gaskets and spring washers to prevent loose connection caused by wind vibration and temperature changes. It is necessary to use a torque wrench to control the bolt tightening force uniformly; excessive force will cause thread sliding and aluminum profile extrusion deformation, while insufficient force will lead to unstable connection and hidden dangers of structural loosening.

It is strictly forbidden to drill holes, cut or bend aluminum profiles arbitrarily during installation. Random modification will damage the integral structure and anti-corrosion coating of the profiles, reduce the structural strength and corrosion resistance of the brackets, and greatly shorten the service life of the system. For the adjustable parts of the bracket inclination angle and spacing, fine adjustment should be carried out according to the local solar altitude angle to ensure the optimal power generation inclination, and all adjustable components should be locked firmly after positioning to avoid displacement in windy and rainy weather.

2.3 Photovoltaic Module Laying and Fixation

After the bracket frame is installed and accepted, the photovoltaic modules can be laid and fixed. During the laying process, ensure that the modules are placed flat and closely matched with the bracket beam surface, without empty suspension and uneven stress. The module pressing blocks should be installed symmetrically, with consistent spacing and uniform stress, to avoid module cracking and glass damage caused by local excessive pressure. At the same time, keep a reasonable gap between adjacent modules to reserve thermal expansion and contraction space, preventing module extrusion and damage under high-temperature outdoor environment.

In addition, pay attention to the overall flatness and linearity of the module array, ensure consistent installation height and inclination of all modules, avoid irregular arrangement affecting power generation efficiency, and prevent local water and dust accumulation caused by uneven laying. It is forbidden to step on the aluminum bracket and photovoltaic module at will during construction to avoid profile deformation, module glass scratching and battery chip damage.

3. Safety and Environmental Adaptation Precautions

3.1 Safety Operation Specifications

The on-site installation of solar aluminum ground mount systems belongs to outdoor high-altitude and open-air construction, with certain safety risks. All construction personnel must wear standard safety protective equipment including safety helmets, safety belts and non-slip work shoes. High-altitude operation must comply with safety specifications, and it is forbidden to work in windy, rainy, thunderstorm and heavy fog weather to prevent falling accidents and electric shock hazards. Construction tools and materials should be placed neatly, and it is forbidden to stack them randomly to avoid falling and hurting people.

During the electrical matching construction of the photovoltaic system, the power-on operation specifications must be strictly implemented, and the wiring and grounding construction should be carried out by professional electricians. The aluminum bracket system must be reliably grounded to form a complete lightning protection and grounding system, which can effectively avoid lightning strike damage to modules and brackets in thunderstorm weather and eliminate static electricity hazards generated during system operation.

3.2 Anti-Corrosion and Weather Resistance Protection

Although aluminum alloy materials have natural anti-corrosion properties, outdoor long-term exposure to wind, rain, ultraviolet radiation and acid-base humid environment will still cause oxidation and aging of the material surface. During installation, it is necessary to protect the anodized or sprayed anti-corrosion coating of aluminum profiles, and avoid scratching and colliding the coating. For the contact parts between aluminum brackets and concrete foundations and soil, anti-corrosion gaskets and isolation measures should be added to prevent electrochemical corrosion caused by long-term contact with humid medium.

In coastal areas with high salt fog and industrial areas with serious acid-base pollution, special enhanced anti-corrosion treatment should be carried out on the aluminum bracket system, and high anti-corrosion bolts and accessories should be selected to delay material aging and ensure the long-term stable operation of the system. In cold and snowy areas, the installation structure should properly enhance the bearing capacity, and avoid excessive snow pressure causing bracket deformation and module damage in winter.

4. Post-Installation Acceptance and Daily Maintenance Precautions

4.1 Completion Acceptance Inspection

After the completion of all installation works, a comprehensive and detailed acceptance inspection must be carried out before the system is put into use. First, check the overall structural flatness, verticality and stability of the bracket system to ensure no deformation, inclination and loose connection. Second, inspect all bolt connection parts to confirm uniform and standard tightening force, complete locking measures and no missing installation. Third, check the grounding device and lightning protection system to ensure reliable grounding and compliance with safety standards. Finally, test the overall arrangement of the module array to ensure consistent inclination angle, standard spacing and no damaged or displaced modules. Unqualified parts must be rectified and rechecked in time, and the system can only be put into operation after passing the acceptance.

4.2 Daily Operation and Maintenance Management

Daily maintenance is crucial to extend the service life of the aluminum ground mount system and maintain stable power generation. Regularly inspect the bracket structure, check for profile deformation, coating peeling, bolt loosening and corrosion, and tighten loose parts and repair damaged anti-corrosion coatings in a timely manner. After extreme weather such as strong wind, heavy rain and snow, special inspection must be carried out to eliminate potential safety hazards such as bracket displacement and module loosening. Regularly clean the dust, fallen leaves and sediment on the module surface to ensure good light transmittance and stable power generation efficiency.

In addition, regular professional detection of the grounding resistance and structural stability of the bracket system is required. Abnormal problems such as structural stress imbalance and aging of accessories should be found and dealt with in a timely manner to avoid small defects evolving into large safety accidents, ensuring the long-term safe, stable and efficient operation of the entire photovoltaic power generation system.