With the development of machinery, cable tray is widely used in engineering construction. If we don't know what problems should be paid attention to in the installation of cable tray, the cable tray will be seriously damaged by the environment after installation, and the whole line will be damaged. Therefore, we need to know what problems should be paid attention to in the installation of cable tray, so that we can use it better in engineering construction.

我们需要了解电缆桥架的安装需要对环境条件进行综合分析 ，一般情况下我们将环境条件划分为三种，分别是正常环境、特殊环境、以及腐蚀环境，不同的环境对电缆桥架的安装要求也不尽相同。其次，电缆桥架的安装要注意确定电缆桥架的走向，电缆桥架的安装确定时应该以多数电缆的走向为依据，在室外环境中走向可以沿着工艺管道，而在室内的时候沿着梁，柱，墙等均可。

First of all, we need to understand the installation of cable tray, and we need to make a comprehensive analysis of the environmental conditions. Generally, we divide the environmental conditions into three kinds, namely normal environment, special environment, and corrosive environment. Different environments have different requirements for the installation of cable tray. Secondly, the installation of cable tray should pay attention to determine the direction of cable tray. The installation of cable tray should be based on the direction of most cables. In the outdoor environment, the direction can be along the process pipeline, while in the indoor environment, it can be along the beam, column, wall, etc.

电缆桥架的安装要注意荷重的计算，计算时需要的数据是处于断面上的电缆单位长度上的重量以及桥架的总荷载量的。的也是更重要的一点，电缆桥架的安装需要综合前三点的条件来进行桥架的类型和规格的确定，选择时需要考虑的参数有立柱的长度以及间距，桥架的层次，托臂的长度等。

The installation of cable tray should pay attention to the calculation of load. The data needed for calculation are the weight of the cable unit length on the section and the total load of the tray. The last and most important point is that the installation of cable tray needs to integrate the conditions of the first three points to determine the type and specification of the cable tray. The parameters to be considered in the selection include the length and spacing of columns, the level of the cable tray, the length of the bracket, etc.

施工环境当中需要防火要求时，可以选择相应的防火电缆桥架，防火电缆桥架的整体防火性能要求需要符合有光规范或标准的要求。这就是对环境条件进行的综合分析。

When the construction environment needs fire protection requirements, the corresponding fire-proof cable tray can be selected, and the overall fire performance requirements of fire-proof cable tray need to meet the requirements of national light codes or standards. This is a comprehensive analysis of environmental conditions.

选择电缆桥架的负载等级时，桥架的平均工作负载不应大于所选电缆桥架的额定平均工作负载。电缆桥架支吊架实际跨度不等于2m时，平均工作荷载应满足要求。

When selecting the load level of the cable tray, the average working load of the tray should not be greater than the rated average working load of the selected cable tray. When the actual span of cable tray support is not equal to 2m, the average working load shall meet the requirements.