桥架由通道电缆托盘、托盘和级联电缆托盘、网格托盘等结构组成，包括支架、支架、安装附件等。可以独立假设，也可以放在各种建筑(结构)建筑物和管道支架上，表现出结构简单、形状美观、配置灵活、维修方便等特点。所有部件都要镀锌，并安装在建筑物外的露天托盘上。如果属于附近海滩或腐蚀地区，材料必须有防腐、潮湿、附着力。

The bridge is composed of channel cable trays, trays, cascaded cable trays, grid trays, and other structures, including brackets, brackets, installation accessories, etc. It can be independently assumed or placed on various building (structural) structures and pipeline supports, exhibiting characteristics such as simple structure, beautiful shape, flexible configuration, and easy maintenance. All components must be galvanized and installed on outdoor pallets outside the building. If it belongs to a nearby beach or corrosive area, the material must have anti-corrosion, moisture resistance, and adhesion.

1、电缆桥架负荷

1. Cable tray load

电缆桥架上的载荷分为静态、动态和附加载荷。

The load on cable trays is divided into static, dynamic, and additional loads.

静态负载是在电缆托盘中布线的电缆类型、布线数、每个外径的重量/单位长度，并根据电缆布线单独列出。动态载荷是电缆桥架安装和维护过程中施工修理工的重量。对于轻型电缆桥架，通常不考虑移动载荷。也就是说，不允许站在托盘上的人(行)。如果需要考虑逆向因素，则应适当缩小跨度。追加重是仅在室外由冰雪、风、电磁力形成的载荷，与安装地点的区域自然气象条件及电荷体的性质有关，在设计中应根据各种条件进行计算。

Static load refers to the type, number, weight per unit length of each outer diameter of the cables routed in the cable tray, and listed separately according to the cable routing. Dynamic load refers to the weight of construction and repair workers during the installation and maintenance of cable trays. For lightweight cable trays, moving loads are usually not considered. That is to say, people are not allowed to stand on pallets. If reverse factors need to be considered, the span should be appropriately reduced. Additional weight is a load formed only outdoors by ice, snow, wind, and electromagnetic force, which is related to the natural meteorological conditions and properties of the electric charge in the installation location. It should be calculated based on various conditions in the design.

2、选择桥架的步骤

2. Steps to choose a bridge frame

(1)确定托盘宽度、标高数、支撑的样式和间距以及每层托盘中的电缆分布。

(1) Determine the width of the tray, the number of elevations, the style and spacing of the supports, and the distribution of cables in each layer of the tray.

(2)计算各层电缆的均布载荷(kN/m2)，提前确定托盘的型号、规格。

(2) Calculate the uniformly distributed load (kN/m2) of each layer of cables and determine the model and specifications of the tray in advance.

(3)根据电缆总均布载荷值检查托盘强度。验算仪式如下

(3) Check the strength of the tray based on the total uniformly distributed load value of the cable. The verification ceremony is as follows

使用q=Q1 Q2

Use q=Q1 Q2

表达式中的：q1 -电缆的连续负载(每层连续负载中的大值)(kN/  M2)，均布载荷是托盘、梯子或电缆槽的载荷。

In the expression: q1- the continuous load of the cable (the maximum value in each layer of continuous load) (kN/M2), and the uniformly distributed load is the load of the tray, ladder, or cable tray.

Q2 -考虑布置或维护电缆时，人的重量相同的均布载荷(kN/  M2)，q2值计算，人的重量一般计算为p=90kg公斤。

Q2- When considering the layout or maintenance of cables, the uniformly distributed load (kN/M2) with the same weight of a person is calculated, and the q2 value is calculated. The weight of a person is generally calculated as p=90kg kg.

表示集中载荷和均匀载荷的弯曲距离，根据大弯曲距离相同的条件转换：  型式为：P  - 1的负载(公斤)

Representing the bending distance of concentrated load and uniform load, converted based on the same condition of large bending distance: Type: P-1 load (kg)

一个支承间距(支承间距不相等时的大值)(m)

A support spacing (the maximum value when the support spacing is not equal) (m)

Q2 - 1的等效均布载荷(kg/m)

Equivalent uniformly distributed load of Q2-1 (kg/m)

以上的精彩内容来自：济南电缆桥架更多精彩内容请点击我们的网站查看更多：http://www.sdhangfeng.com

The above exciting content comes from: Jinan Cable Tray. For more exciting content, please click on our website to view more: http://www.sdhangfeng.com