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钢结构雨棚的防腐要注意什么?
来源:http://www.sdcscp.com/ 发布时间:2022-04-19
钢结构雨棚优点很多,结构坚固、施工方便、造型美观、抗震性强等,但像其他建筑结构一样,它也有自己的短板,就是易于腐蚀和耐火能力差。钢材的腐蚀是自发的、不可避免的过程,但是可以人为控制,因此钢结构雨棚必须要进行防护设计。钢结构雨棚的防护设计即对钢材采取有效的防护措施,从而减缓钢材的生锈腐蚀过程,延长钢构件的使用寿命。
Steel structure canopy has many advantages, such as solid structure, convenient construction, beautiful appearance and strong seismic resistance. However, like other building structures, it also has its own short board, which is easy to corrode and poor fire resistance. The corrosion of steel is a spontaneous and inevitable process, but it can be controlled manually. Therefore, the protective design of steel structure canopy must be carried out. The protective design of steel structure canopy is to take effective protective measures for steel, so as to slow down the rust and corrosion process of steel and prolong the service life of steel members.
一般来说,边远地区、低污染地区、有暖气的建筑内部等是C1和C2环境,典型的比如、火车站、地铁站、机场。中等程度的污染区,如二氧化硫含量高,湿度高的生产区域是C3环境,典型的比如处于城市中的水厂、游泳馆、体育场馆。工业区、沿海和化工厂等可以视作是C4环境,典型的比如、电子厂、机械厂、电厂。高湿度的工业区域污染特别厉害的地方是C5I工业腐蚀环境,高湿度加上高盐度就是C5M海洋腐蚀环境。
Generally speaking, remote areas, low pollution areas and the interior of heated buildings are C1 and C2 environments, such as, railway stations, subway stations and airports. Medium pollution areas, such as production areas with high sulfur dioxide content and high humidity, are C3 environment, typically such as water plants, natatoriums and stadiums in cities. Industrial areas, coastal areas and chemical plants can be regarded as C4 environment, such as, electronic plants, machinery plants and power plants. The c5i industrial corrosive environment is particularly polluted in high humidity industrial areas. High humidity plus high salinity is the c5m marine corrosive environment.

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常用的防腐蚀方法有以下四种:
There are four common anti-corrosion methods:
1.钢材本身抗腐蚀,可以用具有抗腐蚀能力的耐候钢。
1. The steel itself is corrosion-resistant, and weather resistant steel with corrosion resistance can be used.
2.长效防腐蚀方法,可以用热浸锌、热喷铝(锌)复合涂层进行钢结构表面处理,可以让钢结构的防腐蚀年限达到20到30年,甚至更长。
2. The long-term anti-corrosion method can use hot-dip zinc and hot sprayed aluminum (zinc) composite coating for steel structure surface treatment, which can make the anti-corrosion life of steel structure reach 20 to 30 years or even longer.
3.涂层法,即在钢结构表面涂(喷)油漆或其他防腐蚀材料,其耐久年限一般为5到10年。
3. Coating method, that is, painting (spraying) paint or other anti-corrosion materials on the surface of steel structure, and its durability is generally 5 to 10 years.
4.对地下或地下钢结构采用阴极保护。
4. Cathodic protection shall be adopted for underground or underground steel structures.
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