1. Color steel plate structural connector
(1) Strength of color steel plate structural connector: the main function of structural connector is to resist the wind suction. Therefore, the tensile performance of the connector itself, the pull-out performance of the connector and the load-bearing
structural member connected, and the pull-out performance of the color steel plate under the connector caused by wind suction should be considered. In the above three cases, the third performance is often weak. When purchasing self tapping screws and
other connectors, the mechanical properties of the first two items can only be provided. The third performance is related to the thickness of color plate, regional wind load, building shape, steel plate material, etc., which can not be self connected.
In order to solve this problem, some foreign companies have carried out experiments and calculated with empirical formula. The following formula is proposed by a company for reference.
(2) Surface treatment of structural connectors: the service
life of structural connectors should match the service life of color board building materials, so the surface treatment of steel connectors should be required. At present, there are many kinds of self tapping screws, such as zinc plating, aluminum plating
and organic coating after coating. The thickness of coating and coating is also different. When ordering, it should be selected according to the importance of buildings, and the supplier should provide standard technical data for selection.
the sealing gasket on the structural connector is an important part of the connector. It prevents the rain from infiltrating from the holes in the plate. Therefore, when choosing self tapping screws, the service life and sealing requirements of the sealing
washer should be put forward. Its service life should match the service life of the color plate components, and it should have good sealing performance and anti-aging performance.
2. Color steel plate structural connector
Self tapping screws
and aluminum alloy rivets are often used for structural connectors. The selection requirements are the same as those for structural connectors. Aluminum alloy rivets should be selected when aluminum alloy rivets are selected, and pure aluminum rivets
are not allowed. Closed hole aluminum alloy rivets should be selected for outdoor use. Special attention should be paid to the sealing problem when using on color plate components. Generally, the sealing head of sealant is often not satisfied with the
construction condition and the construction personnel. Therefore, it is suggested that the sealing gasket with good ageing resistance should be used on the aluminum alloy rivet.
3. Calculation of the amount of color steel plate connector
type and quantity of connectors used in an engineering project are complicated and should be calculated by classification. In the preliminary design (estimation) stage, the consumption of square meters or extended meters is generally used for calculation;
in the construction material preparation stage, the calculation should be based on the actual consumption, and the calculation results should be added with about 5% of the loss to make up for the damage, loss and changes in the construction process.
4. Inspection and packaging of color steel plate connector
Connectors are generally produced and supplied by professional manufacturers. When receiving the products, there should be factory certificate, material list and technical performance
certificate, etc. generally, there is no need to test when using, but the specifications, models and quantities of the products delivered in boxes should be inspected. For the packaging of connectors, the connectors delivered in boxes shall be delivered
in boxes, and the self-made connectors shall also be packed in boxes, and the model and number of pieces shall be indicated on the box.