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Why Can Composite Manhole Covers Become The Mainstream Of Th

With the development of urban construction, urban-rural integration has become mainstream, and large and small towns have begun to appear in various parts of the country, which means that the use of manhole covers will increase significantly. The development of urban construction has also driven the development of the manhole cover industry. At the same time as the development of the manhole cover industry, the construction of the city has become more smooth. There are three major manhole covers in China, namely cast iron manhole covers, cement manhole covers, and composite manhole covers. The cement manhole cover is too bulky, and the quality has generally gradually withdrawn from the stage of history. The remaining cast iron manhole covers and composite manhole covers are still in the fight. Evaluating whether an industrial product has development prospects depends on whether its functions are diversified, whether it is used in a wide range, and whether the manhole cover will change as the environment changes. First of all, the cast iron manhole cover is a very traditional type of manhole cover. Many cast iron manhole covers from the last century are still in normal use today, but with the development of the economy, there are more and more impurities in the cast iron manhole cover and the quality is not good. It is as stable as before, and the material of cast iron manhole cover is easy to corrode and easy to be stolen, so it is very prone to security risks. In the eyes of many people, resin composite manhole covers are light manhole covers. Green belts and sidewalks are used more, but they do not know that the manhole cover made of composite SMC sheet is very tough. In addition, the material is resistant to corrosion and high and low temperatures. Without recycling value, it has natural anti-theft characteristics, and there will be no sparks during construction and maintenance. It has become one of the special manhole covers for gas stations. After testing, the maximum load of SMC manhole covers can reach F900KN. The above characteristics make the use of composite manhole covers continue to rise.
Next, we do a comprehensive analysis of the composite manhole cover. The manhole cover is installed on the road and needs to meet the rolling of various cars on this road. Then the important index to measure this is the bearing level of the manhole cover (that is, the experimental load) and the experimental load. The accuracy represents the authenticity of the bearing capacity of the manhole cover. No matter what manhole cover is, it must meet the national standard.
Next we analyze from the following points:
Structural analysis: The manhole cover is a product of a stress structure. The upper part of the manhole cover is compressed and the lower part is pulled. According to the designability of composite materials, different composite materials can be designed and used according to the force requirements of different parts of the manhole cover. At the same time, a reasonable structure is designed so that the composite material is uniformly stressed and the bearing capacity of the well is higher.
Analysis from the material: In order to improve the bearing capacity of the manhole cover, continuous reinforcement fiber is essential. The higher the continuous fiber content (within a certain limit), the stronger the bearing capacity of the manhole cover.
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