Проект защиты окружающей среды --Shijiazhuang

Membrane (Membrane Struceures) is a new form of building structure, is a combination of a high degree of film material (PVC or TEFLON) and the strength member (steel, rods or cables) through a certain way a certain type to internally generated and pre-tensile stress to form the shape of a space as a cover structure, and able to bear a load of space outside the structure. It overrate their own strength light, large span, short construction period, to facilitate industrial production, production and installation of simple, good economy, with semi-transparent, self-cleaning, flame retardant characteristics, known as the fifth generation of excellent support materials, suitable for sports facilities, entertainment facilities, commercial announcement facilities, landmark buildings and so on.Membrane structure can be divided into inflatable membrane structure and tensioned membrane structures two major categories: Membrane structure is inflated to some extent by the indoor and outdoor pressure difference (usually in the water column between 10MM-30MM) outdoor pressure differential allows housing up tectorial membrane cloth are subject to certain buoyancy in order to achieve a larger span. Tensioned membrane structures are supported by columns and steel tension cables or shape, its shape is very beautiful flexible.Film membranes used types of construction projects: The membrane most commonly used membrane materials are mainly of two kinds: one is PVC (polyvinyl chloride coated polyester fabric), and then re-surface layer of carbon-fluorine compounds such as PVDF (polyvinylidene fluoride) or stick a layer of TEDLAR (poly fluoride) membrane. Its main characteristic is flexibility, rich colors, anti-folding performance, self-cleaning is good, easy to manufacture, economical, and its life of up to 15 years. The other is PTFE (Teflon coated glass fiber fabric). Main features are high strength, large elastic membrane, self-cleaning, fire and other performance is good, but expensive and difficult to fold, to cut production of high precision, life in general more than 30 years for permanent construction.