Case show
The client's location is not suitable for concrete construction, so he chose to use the greenhouse with sunlight board as the covering material to divide the function. It mainly includes workshops, auxiliary production rooms, and auxiliary offices. The top and surrounding covering materials are all milky white sun panels.
Technical characteristics
The excellent technical characteristics of polycarbonate (PC) solar panels determine its wide range of applications. The main technical characteristics are as follows.
(1) Light transmittance: The light transmittance of the solar panel can be as high as 89% depending on the color, which is comparable to glass.
(2) Impact resistance: good toughness, not easy to suffer damage during transportation, installation and use: impact resistance is 250 times that of the same glass, it will not be brittle fracture like ordinary glass, and it can adapt to destructive conditions such as storms, hail, heavy snow, etc. Impact is not easy to break.
(3) Anti-ultraviolet and condensation: The surface of the sun panel has undergone special micro-crystal strengthening treatment and a UV protective layer, and the reverse side has anti-condensation treatment. When installed, the front side faces outwards, which can block the short-wave ultraviolet rays contained in the sun and harmful to the human body. Anti-condensation treatment can also insulate and prevent fog.
(4) Light weight: save the cost of transportation, handling, installation and support frame, the weight of the hollow is only 10%~15% of the glass.
(5) Flame-retardant: National standard GB8624-2006 "Classification of Building Materials and Products Flammability" confirms that it belongs to the flame-retardant B level. Will contribute to the spread of the fire.
(6) Flexibility: According to the design drawing, cold bending method is adopted on the construction site, and the arched, semi-circular roof and windows are installed. Compared with glass, it can be cut, processed and bent on site, which is more convenient and quicker in actual construction, and can meet the requirements of on-site modeling.
(7) Sound insulation: PC sunshine board adopts hollow honeycomb structure design, the sound insulation effect is obvious, and it has better sound insulation effect than the same thickness of glass.
Measure and pay off
Pop-up roof sun panels to support the center line of the steel skylight ceiling, and check the elevation of the steel frame of each steel skylight one by one. According to the steel frame deepening design drawings, the size check structure deviation is given as the basis for the deepening design of the skylight.
Frame → install sunshine board → install layering → glue.
Quality measures
(1) The production and installation quality of the curved steel frame structure of this project shall be implemented in accordance with the GB50205-2001 "Code for Construction Quality Acceptance of Steel Structure Engineering"
(2) The cutting and transportation of the sunshine board must ensure the quality. Pay special attention to the sealing heads at both ends of the solar panel to ensure that it is not damaged, so as to prevent the inside of the honeycomb from being polluted by the ventilation.
(3) The specifications, model, and size of the solar panels must meet the design requirements, and have a certificate of ex-factory: there should be no damage or cracks on the surface of the solar panels, and there should be no dust or moisture in the gaps of the solar panels.
(4) The sealing strip must be tightly attached to the sun board and aluminum profile, and the final size is the same as the aluminum profile. The sealant must be neutral, and it must be non-corrosive to the sun board. Each connection must be firm and meet the requirements of leak-proof sealing.
(5) When installing the sun panel, there must be a certain amount of displacement between the two sun panels. Structural deformation is strictly prohibited. The self-drilling and self-tapping screws are evenly applied to prevent damage to the sun panel. After the installation is completed, the fixing method is correct, the ceiling slope meets the design requirements, and the drainage is unobstructed.
Safety measures
(1) To enter the construction site, you must understand and strictly abide by the safety operation regulations
(2) High-altitude workers must wear safety belts, and put tools on hand in the tool bag, and do not throw tools away.
(3) Garbage generated during the construction process such as the scraps of the sunshine board, the torn off the protective film of the sunshine board, the used sealant packaging, the scraps of EPDM rubber strips and other waste generated during the construction process should be stored at a fixed point, cleaned up, and littering is prohibited. .
(4) The cutting of the sunshine board must comply with the operating specifications. During the installation of the sunshine board, the operator must dress neatly, wear a safety helmet, and it is strictly forbidden to wear slippers. Professionals must be on site to conduct command and supervision.
(5) Pay attention to safe use when using knives and portable circular saws on site to avoid accidentally injuring yourself and others.
(6) Protective measures should be taken to cover the sunlight panels that cannot be used in time to prevent dust and water vapor in the air from running into the panels.
Polycarbonate hollow sheet is made of polycarbonate resin. It is a high-tech, comprehensive performance and excellent, energy-saving and environmentally friendly plastic sheet. It is a plastic building material commonly used internationally, and other building decoration materials cannot compare The advantages are widely used in various greenhouses, daylighting canopies, highway sound barriers and other fields.
