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.

不易燃燒，難燃型玻璃鋼電纜橋架的氧指數(shù)≥32。使用壽命長，一般設(shè)計壽命為20年，但是鋼制電纜橋架的3倍。施工的優(yōu)越性在于切割方便、組裝靈活，安裝無需動火，這對于爆炸危險環(huán)境并且工程工期緊張的化工廠工程意義尤其重大，因為在爆炸危險環(huán)境，工程動火安裝時化工廠必須停產(chǎn)，經(jīng)濟(jì)效益必受影響。

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.

鋁合金電纜橋架外形尺寸、荷載特性均與鋼質(zhì)橋架基本相近。就費(fèi)用而言，鋁合金橋架的造價比鍍鋅鋼制電纜橋架要高20%，使用壽命是鋼制電纜橋架的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.

在工程設(shè)計文件中通常籠統(tǒng)地將電纜橋架稱呼為“橋架”，并未指出具體的結(jié)構(gòu)特征，不同類型、不同制作材料的電纜橋架相差較大，且結(jié)構(gòu)類型的混亂會帶來工作現(xiàn)場散熱、機(jī)械防護(hù)方面的問題。

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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