During the installation of the bridge, there are also curved, deformed, and straight connectors between the straight stages, which should be matched by the bridge manufacturer. The thickness of the connecting thin steel plate should not be less than the thickness of the bridge thin steel plate. The interface should be flat, without distortion, protrusion, or depression. The half round head galvanized bolts used for connection should be on the inner side of the bridge, and the bolt length should be appropriate. After tightening, the exposed length should be 2-5 teeth. For horizontally installed cable trays, the connection head of the straight section should be set at around 1/4 of the distance between the two supports and hangers as much as possible.

1.一般情况下不在施工现场制作桥架。由于特殊原因必需时，可利用现有的桥架改制非标准弯通和变径直通。改制和切断直线段桥架时，均不得用气、电焊切割，应用专用切割工具。改制的桥架必须平整，及时补漆，面漆颜色应与其它桥架相近。因为新建建筑物里，桥架安装一般都在混凝土结构工程完成数月甚至一年之后进行，混凝土收缩逐渐减小。伸缩量一般不会超过建筑物伸缩缝宽L。

1. Generally, cable trays are not manufactured on the construction site. If necessary due to special reasons, existing cable trays can be used to modify non-standard bends and variable diameter straights. When restructuring and cutting straight section cable trays, gas or electric welding cutting is not allowed, and special cutting tools should be used. The restructured cable tray must be flat, repainted in a timely manner, and the color of the topcoat should be similar to other cable trays. In new buildings, the bridge installation is usually carried out months or even a year after the completion of the concrete Structural engineering, and the concrete shrinkage gradually decreases. Generally, the expansion amount will not exceed the width L of building Expansion joint.

2.桥架跨越建筑物的伸缩缝处，按GB50168规定，应设置伸缩缝，保证桥架及敷设在桥架内的电缆在建筑物伸缩不危及其本身安全时能自由伸缩，不受损坏。

2. At the Expansion joint where the bridge crosses the building, Expansion joint shall be set according to GB50168 to ensure that the bridge and the cable laid in the bridge can expand freely without damage when the expansion of the building does not endanger its own safety.

3.若发现或从土建单位了解到建筑物伸缩缝较大有可能超过L时，以便于在桥架中留电缆(或电线)的伸缩余量，这个余量应大于伸缩缝宽L。应按实际做好伸缩处理。要跨越伸缩缝的桥架至少一侧有较长的直线段，宜超过30m，或伸缩缝两侧直线段桥架相加有30m，中间无水平或垂直弯通。

3. If it is found or learned from the civil engineering unit that the expansion joint of the building is large and may exceed L, so as to leave expansion allowance for cables (or wires) in the bridge, this allowance should be greater than the width of expansion joint L. Expansion and contraction treatment should be done according to the actual situation. At least one side of the bridge to cross the Expansion joint has a long straight section, which should exceed 30m, or the straight section bridges on both sides of the Expansion joint add up to 30m, and there is no horizontal or vertical bend in the middle.