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井盖设计成圆形的原因?

来源:http://www.kpp647.com添加时间:2016-10-12 11:49:08

首先井盖下面的洞是圆的,因为圆柱形更能承受周围土地的压力。而且,下水道出入孔意味着要留出足够一个人通过的空间,而一个顺着梯子爬下去的人的横截面基本是圆的。所以圆形自然而然地成为下水道出入孔的形状。
The first cover below the hole is round, because the cylindrical can withstand the pressure of the surrounding land. Moreover, the access to the drain means to leave enough space for a person to pass, and a person who climbs down the ladder is essentially round. So the circle is the shape of the drain.
一些方形洞口上也会看到方形的盖子。这种盖子比入口大,周围有横档。通常这种盖子是金属质地,非常重。我们可以想象一下,两英尺宽的方形洞口,1到1.5英寸宽的横档。为了让井盖掉进去,需要抬起一端,然后旋转30度,这样它就不受横档的妨碍了,然后再将井盖与地平线成45度角,这时转移的重心才足以让井盖掉下去。而圆的就没有这样的顾虑.

QQ截图20160713182714.pngSome square holes will also see the square of the lid. This covers the entrance than large, there are around. Usually the lid is made of metal, very heavy. We can imagine that a square hole two feet wide, 1 to 1.5 inches wide. In order to fall into the covers, the need to lift one end, and then rotate 30 degrees, so that it will not be rung hiders, and then covers a 45 degree angle with the horizon, the focus at this time was sufficient for the transfer of the covers off. And the circle has no such concerns.
从工程学的角度来看,井盖的形状完全取决于它要覆盖的洞口的形状.
From an engineering point of view, the shape of a manhole cover to cover it completely depends on the shape of the opening.
为了承受来自不确定方向的荷载。试想,若下水道的盖子是方形或者其他带有棱角的形状,当有车轮的冲击荷载作用其上时,棱角部位极容易损坏。下水道的检查井之所以做成圆形,也是出于受力考虑——拱形结构能有效地抵抗土压力
In order to withstand the load from the uncertain direction. Just think, if the sewer cover is square or other with the shape of the edges and corners, when there is the impact of the wheel load on it, the edges and corners of the site is very easy to damage. The inspection well of the sewer is made into a circle, and it is also out of the force to consider that the arch structure can effectively resist the earth pressure.
不过,由于在周长相等的图形中圆的面积更大,所用的材料也就更多。所以,从经济的角度考虑,有些地方已设计使用其它形状的窨井盖。
However, as the area of the circle in the circle of equal perimeter is the largest, the material used is the most. So, from an economic point of view, some places have been designed using other shapes of manhole cover.
本文的精彩内容由山东球墨铸铁井盖提供,更多的内容请点击我们的官方网站:http://www.kpp647.com或者来电咨询。
Wonderful content in this paper is provided by the Shandong ductile iron manhole covers, more information please click our website or contact us: http://www.kpp647.com.


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