The material of cable bridge is another common problem in the design of cable bridge. According to the material, the cable bridge is mainly made of steel, glass steel and aluminum alloy. Glass fiber reinforced plastic cable bridge is characterized by light weight and only 1/4 of carbon steel. It is well resistant to water and corrosion resistance and is suitable for chemical plants.

不易燃烧，难燃型玻璃钢电缆桥架的氧指数≥32。使用寿命长，一般设计寿命为20年，但是钢制电缆桥架的3倍。施工的优越性在于切割方便、组装灵活，安装无需动火，这对于爆炸危险环境并且工程工期紧张的化工厂工程意义尤其重大，因为在爆炸危险环境，工程动火安装时化工厂停产，经济效益必受影响。

Not easy to burn, flame retardant oxygen index = type glass steel cable tray 32. The service life is long and the general design life is 20 years, but the price is 3 times that of the steel cable bridge. The superiority of the construction is convenient cutting and flexible assembly, installation without fire, the chemical explosion hazardous environment and engineering significance of plant engineering construction period is especially important, because in the explosion hazardous environment, fire engineering installation of chemical plant must be discontinued, the economic benefit will be affected.

铝合金电缆桥架外形尺寸、荷载特性均与钢质桥架基本相近。就费用而言，铝合金桥架的造价比镀锌钢制电缆桥架要高20%，使用寿命是钢制电缆桥架的5倍以上。

The size and load characteristics of the aluminum alloy cable bridge are almost similar to that of the steel bridge. As far as the cost is concerned, the cost of the aluminum alloy bridge is 20% higher than that of the galvanized steel cable bridge, and the service life is more than 5 times that of the steel cable bridge.

在工程设计文件中通常笼统地将电缆桥架称呼为“桥架”，并未指出具体的结构特征，不同类型、不同制作材料的电缆桥架相差较大，且结构类型的混乱会带来工作现场散热、机械防护方面的问题。

In the engineering design documents in general will usually cable bridge called "bridge", did not indicate the specific structural features, different types and different materials of the cable tray price difference is large, and the structure type of chaos will bring the work site heat, mechanical protection problems.

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