桥架是一个支撑和放电缆的支架，在工程上用的很普遍，只要铺设电缆就要用桥架，桥架分为槽式桥架、托盘式桥架和江南APP官方入口官网 、网格桥架等结构；由支架、托臂和安装附件等组成。那么如果要使用的话就要要知道的桥架的知识点，下面来讲讲。

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.桥架防火等级选择桥架,有防火要求的部分可以添加在电缆梯架内,托盘用火或板的阻燃性能,材料如网络形成一个封闭或半封闭结构,并采取在汽-水桥和其表面涂刷防火涂料,其耐火材料整体性能应满足相关规范或标准的要求。

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.

铝合金电缆桥不适合高防火。在同样的规范下，阻燃电缆桥的造价比钢缆桥高出2.2倍，使用寿命是钢索大桥的5倍以上，重量比钢索大桥重30%。防火电缆桥比钢缆桥略贵，使用寿命是钢索电桥的三倍多。重量基本上与钢索大桥相同。

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.山东电缆桥架的选择填充率电缆梯架、托盘的宽度和高度的选择应符合填充率的要求,电缆梯架、托盘填充率在一般情况下,在电力电缆的40%~50%,和控制电缆的50%~70%,应保留10%~25%备抵项目发展余量

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.电缆托盘负载级别选择桥架负载级别的选择,电缆槽均匀分布工作负载不应大于所选桥架负载额定载荷均匀分布的水平,如果实际跨度桥架的支吊架不等于2m,均匀分布载荷的工作应符合要求。各部件和支撑架的规格和尺寸应与托盘、梯子的直部分和曲线相匹配。

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. 山东电缆桥架的规格尺寸选择工程实际中，在桥架的规格尺寸选择方面的问题是要么偏大，要么偏紧张。有关规定：“电缆总截面积与托盘内横断面积的比值，电力电缆不应大于40%；控制电缆不应大于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".

要知道的桥架的知识点就是这样了，如果您对此有什么不了解的事情或者问题，就来我们网站 //www.comprepyme.com进行咨询了解吧。

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 //www.comprepyme.com Consult and understand.