Studying On The Deformation Performance Of Energy Saving Color Coated Steel Profile

As more and more requirements made by the country on the building energyefficiency, new types of building energy-saving doors and windows start to enter themarket gradually. Chongqing Huaxia Doors and Windows Limited Company madeindependent research and developed a new type of energy saving color coated steelwindow and door. Entrusted by the company, this research topic is studying on thedeformation performance of energy saving color coated steel window and door, aimingto get its wind load resistance performance. It’s hoped to provide theoretical support forthe improvement design and application of the profiles.Energy saving color coated steel profiles are composite (section) material whichhave its unique mechanical property, can’t be simply applied a single material(continuous homogeneous isotropic) calculation theory. To grasp the wind pressureresistance performance, the equivalent flexural stiffness should be known. Based ontheoretical analysis and laboratory tests, this paper discusses the equivalent flexuralrigidity of the profile section.The theory analysis provides the transformed section method and compositematerial mechanics method, which can calculate the flexural rigidity of the compositematerial cross-section. Then based on the transformed section method, this papercalculates the transformed section rigidity of five kinds of energy saving color coatedsteel profiles. The test gets experimental flexural rigidity by making bending test on thefive kinds of profiles. It examines the influence of the span on the flexural rigidity andgets the result that to the same cross-section, the longer the span, the larger the flexuralrigidity. It also compares the bending capacity of the three kinds of profiles by makingthe same test on a few amounts of plastic-steel profiles and insulating aluminum alloyprofiles with thermal barrier section.Based on the theoretical analysis results and experimental results, this paperprovides the equivalent flexural rigidity of the five kinds of energy saving color coatedsteel profiles delegated by the company, analyzes the influence of slip and span. Fromthe perspective of engineering application, it puts forward a kind of calculation methodto getting the wind resistance performance. Finally, it calculates the equivalent flexuralrigidity of profiles with different thickness of steel surface for the optimization of thesection forms and materials.