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.

如果并不能满足形变要求的时候，可以适当增大桥架侧高或者减小支撑间距，从而满足要求。

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.

电缆桥架是用薄钢板冲压而成，承载能力有限，会因桥架超载而产生形变，不仅影响桥架的美观，而且也会影响电缆的运行。

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.

通常情况下，电缆桥架的承载能力是用电缆桥架的载荷特性曲线表示的，从载荷曲线图可以看出，其载荷能力大小是与桥架规格和支撑距离有关，对应于同一支撑距离和弯凸变形量。侧面高度大，承载力大，当载荷能力相同时，同一规格的电缆桥架的支撑距离小的弯曲变形量小。

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.