钢制槽式桥架作为电缆敷设的基础承载结构，广泛应用于建筑、工厂及各类基础设施的电力与信号传输系统中。然而，当板材厚度不达标、荷载试验不合格，桥架迅速失去承载能力时，后果远不止设备损坏那么简单。

Steel trough type cable trays, as the basic load-bearing structure for cable laying, are widely used in power and signal transmission systems of buildings, factories, and various infrastructure. However, when the thickness of the board does not meet the standard, the load test fails, and the bridge quickly loses its bearing capacity, the consequences are far more than just equipment damage.

根据标准，桥架宽度300-500mm时槽体厚度应达1.5mm，500-800mm时应达2.0mm。载荷试验是电缆桥架力学性能的重要指标。作为建筑工程电缆的承载体，如果桥架荷载试验不合格，容易导致桥架发生皱折和侧翻，提升了建筑工程施工和电线电缆使用的不好因素和风险。一般而言，荷载能力与板材厚度密切相关——厚度越大，承载能力越强；桥架宽度越宽，对厚度要求也越高。一旦过载，桥架底板变形、盖板翘曲甚至坍塌便接踵而至。当桥架在重载下发生变形或侧翻，内部电缆将承受额外应力。更危险的是，桥架变形可能导致接地连续性中断——规范要求桥架作为电缆的金属护层需保证电气连续性，一旦连接处的跨接线因结构变形松脱，整段桥架接地失效。若电缆绝缘破损漏电，桥架将直接成为带电体。桥架的崩溃，从来不是孤立事件。

According to the standard, the thickness of the groove body should reach 1.5mm when the width of the cable tray is 300-500mm, and 2.0mm when it is 500-800mm. Load testing is an important indicator of the mechanical performance of cable trays. As the carrier of construction cables, if the load test of the cable tray fails, it is easy to cause the tray to wrinkle and flip, which increases the adverse factors and risks of construction and the use of wires and cables. Generally speaking, the load capacity is closely related to the thickness of the board - the thicker the board, the stronger the bearing capacity; The wider the bridge width, the higher the thickness requirement. Once overloaded, the deformation of the bridge bottom plate, warping or even collapse of the cover plate will follow one after another. When the bridge undergoes deformation or overturning under heavy load, the internal cables will bear additional stress. Even more dangerous is that deformation of the cable tray may cause interruption of grounding continuity - regulations require that the metal protective layer of the cable tray must ensure electrical continuity. Once the jumper wire at the connection becomes loose due to structural deformation, the grounding of the entire cable tray will fail. If the insulation of the cable is damaged and leaks electricity, the cable tray will directly become a charged body. The collapse of the bridge has never been an isolated event.

钢制槽式桥架虽只是电力输送通道中的一个环节，却承载着整条线路的命脉。从板材厚度达标、荷载等级验证到连接节点的可靠，每一道关卡都不容妥协。承载能力，经不起板材上的偷工减料。

Although steel trough bridge is only one link in the power transmission channel, it carries the lifeline of the entire line. From meeting the thickness standards of the board, verifying the load level, to ensuring the reliability of the connection nodes, every level cannot be compromised. Carrying capacity, unable to withstand cutting corners on the board.