When the cable tray is installed indoors, in order to ensure the straightness, beauty and uniformity of the cable tray, its horizontal load deformation is generally controlled within 4 mm. We can find the load characteristic curve of the corresponding structural form according to the selected cable bridge width and the required horizontal load deformation of the bridge.

如果并不能滿足形變要求的時候，可以適當增大橋架側高或者減小支撐間距，從而滿足要求。

If the deformation requirements can not be met, the side height of the bridge can be appropriately increased or the support spacing can be reduced to meet the requirements.

電纜橋架是用薄鋼板沖壓而成，承載能力有限，會因橋架超載而產生形變，不僅影響橋架的美觀，而且也會影響電纜的運行。

Cable tray is made of thin steel sheet with limited bearing capacity, which will cause deformation due to bridge overload, which not only affects the aesthetics of the bridge, but also affects the safe operation of the cable.

通常情況下，電纜橋架的承載能力是用電纜橋架的載荷特性曲線表示的，從載荷曲線圖可以看出，其載荷能力大小是與橋架規格和支撐距離有關，對應于同一支撐距離和彎凸變形量。側面高度大，承載力大，當載荷能力相同時，同一規格的電纜橋架的支撐距離小的彎曲變形量小。

Generally, the bearing capacity of cable tray is expressed by the load characteristic curve of cable tray. From the load curve, it can be seen that the load capacity is related to the size of cable tray and support distance, corresponding to the same support distance and deflection. When the load capacity is the same, the support distance of cable tray of the same specification is small, and the bending deformation is small.