Cable tray plays a key role in the process of cable wiring, so its structural strength is very important. If the strength does not meet the standard, there will be great uncertain factors in the process of use. Therefore, what conditions should the structural strength of cable tray meet? The following Xiaobian will give you a detailed introduction.

1、电缆桥架的承载能力不得超过使桥架产生永久变形时的大荷载除以安全系数为1.5的数值。

1. The bearing capacity of the cable tray shall not exceed the large load when the cable tray is permanently deformed divided by the safety factor of 1.5.

2、电缆桥架在允许安全工作载荷作用下的相对挠度值，钢制不宜大于1/200，铝合金制不宜大于1/300。

2. The relative deflection of cable tray under the allowable safe working load shall not be greater than 1 / 200 for steel and 1 / 300 for aluminum alloy.

3、钢制托臂在允许承载下的偏斜与臂长比值不宜大于1/100。

3. The ratio of deflection to arm length of steel supporting arm under allowable bearing shall not be greater than 1 / 100.

4、核电厂安全级电路电缆桥架应满足抗震Ⅰ类物项设计要求，应同时采用运行安全地震震动和极限安全地震震动进行抗震设计。

4. The safety grade circuit cable tray of nuclear power plant shall meet the design requirements of seismic category I items, and the seismic design shall be carried out by using both operation safety seismic vibration and ultimate safety seismic vibration.

电缆桥架的结构强度应该满足以上条件，才能够在电缆线的敷设过程中进行使用，所以大家在进行选择购买以及使用之前，一定要对桥架的产品质量以及性能做一个充分的鉴定，只有达到合格标准的产品才能够继续使用，这样才能够保证在后期的使用过程中不发生问题。

The structural strength of cable tray should meet the above conditions before it can be used in the laying process of cable. Therefore, before choosing, purchasing and using, we must fully identify the product quality and performance of cable tray, and only products that meet the qualified standards can continue to be used, Only in this way can we ensure that there are no problems in the later use process.