橋架是一個支撐和放電纜的支架，在工程上用的很普遍，只要鋪設電纜就要用橋架，橋架分為槽式橋架、托盤式橋架和梯級式橋架、網(wǎng)格橋架等結構；由支架、托臂和安裝附件等組成。那么如果要使用的話就要要知道的橋架的知識點，下面來講講。

The bridge is a support for supporting and placing cables, which is widely used in engineering. As long as cables are laid, the bridge is used. The bridge is divided into trough type bridge, tray type bridge, ladder type bridge, grid bridge and other structures; It is composed of bracket, bracket and installation accessories. Then, if you want to use it, you need to know the knowledge points of the bridge. Let's talk about them below.

1.橋架防火等級選擇橋架,有防火要求的部分可以添加在電纜梯架內(nèi),托盤用火或板的阻燃性能,材料如網(wǎng)絡形成一個封閉或半封閉結構,并采取在汽-水橋和其表面涂刷防火涂料,其耐火材料整體性能應滿足相關規(guī)范或標準的要求。

1. The fire rating of the cable tray is selected. The part with fire protection requirements can be added to the cable ladder. The fire-retardant performance of the fire or plate used for the tray, such as the network, forms a closed or semi closed structure, and the fire-resistant coating is applied on the steam water bridge and its surface. The overall performance of the fire-resistant material shall meet the requirements of relevant national codes or standards.

鋁合金電纜橋不適合高防火。在同樣的規(guī)范下，阻燃電纜橋的造價比鋼纜橋高出2.2倍，使用壽命是鋼索大橋的5倍以上，重量比鋼索大橋重30%。防火電纜橋比鋼纜橋略貴，使用壽命是鋼索電橋的三倍多。重量基本上與鋼索大橋相同。

Aluminum alloy cable bridge is not suitable for high fire protection. Under the same specifications, the cost of flame-retardant cable bridge is 2.2 times higher than that of steel cable bridge, the service life is more than 5 times that of steel cable bridge, and the weight is 30% heavier than that of steel cable bridge. The fire-proof cable bridge is slightly more expensive than the steel cable bridge, and its service life is more than three times that of the steel cable bridge. The weight is basically the same as that of the cable bridge.

2.山東電纜橋架的選擇填充率電纜梯架、托盤的寬度和高度的選擇應符合填充率的要求,電纜梯架、托盤填充率在一般情況下,在電力電纜的40%~50%,和控制電纜的50%~70%,應保留10%~25%備抵項目發(fā)展余量

2. Selection of filling rate of Shandong cable tray: the width and height of cable ladder and tray shall meet the requirements of filling rate. In general, the filling rate of cable ladder and tray shall be 40% ~ 50% of power cable and 50% ~ 70% of control cable, and 10% ~ 25% shall be reserved for project development allowance

3.電纜托盤負載級別選擇橋架負載級別的選擇,電纜槽均勻分布工作負載不應大于所選橋架負載額定載荷均勻分布的水平,如果實際跨度橋架的支吊架不等于2m,均勻分布載荷的工作應符合要求。各部件和支撐架的規(guī)格和尺寸應與托盤、梯子的直部分和曲線相匹配。

3. The load level of cable tray shall be selected according to the load level of the cable tray. The uniformly distributed working load of the cable tray shall not be greater than the uniformly distributed level of the rated load of the selected cable tray. If the supports and hangers of the actual span cable tray are not equal to 2m, the uniformly distributed load shall meet the requirements. The specification and size of each component and support frame shall match the straight part and curve of the tray and ladder.

4.山東電纜橋架的規(guī)格尺寸選擇工程實際中，在橋架的規(guī)格尺寸選擇方面的問題是要么偏大，要么偏緊張。有關規(guī)定：“電纜總截面積與托盤內(nèi)橫斷面積的比值，電力電纜不應大于40%；控制電纜不應大于50%”。

4. Specification and size selection of Shandong cable tray in engineering practice, the problem of specification and size selection of cable tray is either too large or too tight. Relevant regulations: "the ratio of the total cross-sectional area of the cable to the cross-sectional area in the tray shall not be greater than 40% for power cables and 50% for control cables".

要知道的橋架的知識點就是這樣了，如果您對此有什么不了解的事情或者問題，就來我們網(wǎng)站http://m.ymmgjx.net進行咨詢了解吧。

That's what you need to know about the bridge. If you have anything you don't know about this, please come to our website http://m.ymmgjx.net Consult and understand.