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FRP cable bridge
FRP cable bridge has both the rigidity of metal bridge and the toughness of FRP bridge, with good corrosion resistance and strong aging resistance. Can be widely used in petroleum, chemical industry, electric power, light industry, television, telecommunications and other aspects.
High mechanical strength, it has both the rigidity of the metal bridge and the toughness of the FRP bridge, good corrosion resistance, strong anti-aging performance, beautiful shape, convenient installation, long service life. Epoxy resin and epoxy resin composite cable bridge is suitable for use in strong corrosion environment, large span and heavy load conditions.
Product characteristics
Epoxy resin and epoxy resin composite cable bridge model preparation: epoxy resin and epoxy resin composite cable bridge model preparation from the structure: 1, groove (C) 2, cascade (T) 3, tray (P) epoxy resin and epoxy resin composite cable bridge model preparation:
Selection of epoxy resin and epoxy resin composite cable bridge specifications: cable filling rate does not exceed the standard value, power cable 40-50%, control cable 50-70%. In addition, 10-25% of the project development allowance should be reserved, and the cross-sectional area of the bridge is shown in the following table. All bends and accessories shall meet the project layout conditions and match the bridge.
Selection of load grade of epoxy resin and epoxy resin composite cable bridge: the cable bridge shall include not only its own weight, but also the mechanical load of wire and cable that it can bear, and the working uniform load shall not be greater than the rated uniform load of the selected load class. Under the rated uniform distribution load, the relative deflection of epoxy resin and epoxy resin should not be more than 1 / 200. Material support hanger span mm rated uniform cloth load N / m deflection value (not greater than) mm side height 100mm side height 150mm side height of 200mm epoxy resin compound epoxy resin and epoxy resin composite cable bridge load strength is related to the reliability and durability of the structure, is an important basis of structural design, in practical use, cable bridge in addition to cable load and dead weight, should also consider the following load: 1, outdoor cable bridge should consider wind, rain or ice load, for earthquake area should also consider the inertial load.2. In addition to the normal mechanical load, in principle should not be used as pedestrian channels. For other purposes such as pedestrian passage, the special design for this purpose shall be negotiated with the user.3. The design of cable bridge load should not only consider the vertical load, but also the longitudinal and transverse load existing in the installation and use process (such as the longitudinal traction generated when laying the cable, the transverse load generated by the ladder leaning on the bridge)
Epoxy resin and epoxy resin composite cable bridge support and hanger configuration: 1, indoor support, lifting short span generally use 1.5-3m. The outdoor column span is generally 6m.2. The configuration of supports and hanger in non-straight section shall follow the following principles: when the bridge width W <300mm, a support or hanger shall be set at the straight section of 300-600mm between the non-straight section and straight line; when the bridge width W> 300mm, besides the above conditions, a bracket or hanger shall be added in the middle of the non-straight section.3, the bridge multi-layer setting
ts products heat resistance appropriately stable, with 1.86 mpa load determination, the thermal deformation temperature within 150~260℃, and fiber reinforced thermosetting plastic to insulation data, its thermal conductivity is generally 0.35~0.47w/(m.k), only metal 1 / 100 to 1 / 1000, can be used as outstanding heat insulation and instantaneous high temperature resistance data, thermal deformation temperature up to 350℃, can be used as normal temperature and high temperature structure data. Glass fiber / phenolic aldehyde is the adiabatic data of rocket and- - -engine.3. Electrical function, composite data is the electrical insulation data. If the products made with mica as the filler, their electrical function is more excellent, which can be used to make special parts with arc resistance, voltage resistance and induction resistance. Because of the electrical function of composite data, its products do not have electrochemical corrosion and stray current corrosion, can be widely used in manufacturing appearance, motor and electrical insulation parts, in order to improve the reliability of electrical equipment and extend its service life. In addition, the outstanding dielectric function and microwave transmittance under the high frequency effect have been used to manufacture a variety of radars and other high frequency insulation products such as.4. Excellent corrosion resistance tree ester matrix composite data and ordinary steel electrochemical corrosion mechanism is different, it is not conductive, not dissolved in the dielectric solution ions, so the atmosphere, water and general concentration of acid, alkali, salt and other medium has outstanding chemical stability, especially in the oxidation strong acid and appropriate broad ph range of medium has outstanding stability. Therefore, at present widely used in the manufacture of corrosion resistant products, to be used in stainless steel can not deal with some media dioxygen, carbon, dilute sulfuric acid, secondary chlorine, sodium acid and dioxygen, sulfur, etc.) corrosion, played an outstanding effect.5. Outstanding surface characteristics of FRP extrusion profile composite data and chemical media touch surface is generally rarely corrosion, rarely scaling, so commonly used to make fluid pipeline, the pipeline resistance is very small, friction coefficient is low, save a lot of power. Because composite data do not generally simply produce metal ion polluting media as metals, this is the reason why composite data products are widely used in the food and pharmaceutical industries. In addition, the composite data has a very high friction (pv) limit value, under the condition of smooth water, its friction coefficient is very small, about 0.01~0.03, so it is also the preferred data of wear-resistant products
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