桥架在电气线路敷设建设中发挥重要的作用，具有广泛的应用，是整个电气线路的良好运行的重要保障，但是，在 山东桥架的真实安装过程中仍然会存在一定的质量问题，对桥架的作用发挥造成影响。

Bridge plays an important role in the laying and construction of electrical circuits, and has a wide range of applications. It is an important guarantee for the good operation of the entire electrical circuit. However, there are still certain quality issues in the actual installation process of Shandong bridge, which will affect the effectiveness of the bridge.

（1）桥架变形缝处缺乏补偿措施或直线段过长。

(1) Lack of compensation measures at the deformation joint of the bridge or excessively long straight sections.

在桥架安装过程中，会出现桥架在穿过变形缝处没有设置补偿设施，桥架直线段过长，超过了标准要求，也没有采取安装伸缩板等补偿措施。这些问题就会对桥架造成不利影响，桥架直线段长度过长，而且没有按照相关要求采取安装伸缩板等补偿措施，就会使得桥架更容易受到温度的影响。

During the installation process of the bridge, it may occur that there are no compensation facilities installed at the point where the bridge passes through the deformation joint, the straight section of the bridge is too long, exceeding the standard requirements, and compensation measures such as installing expansion plates have not been taken. These issues will have a negative impact on the bridge. The straight section length of the bridge is too long, and compensation measures such as installing expansion plates are not taken according to relevant requirements, which will make the bridge more susceptible to temperature effects.

建筑物在温度较高的情况下，膨胀量会变大，超过桥架的膨胀量，从而导致桥架的变形。同时，在桥架变形缝处没有进行补偿措施的设置，同样会对建筑物造成不利影响，使得建筑物在进行变形和伸缩变化时，有的可能会使桥架发生变形，进而对电缆线路的质量造成影响。

When the temperature of a building is high, the expansion amount will increase, exceeding the expansion amount of the bridge, resulting in the deformation of the bridge. At the same time, the absence of compensation measures at the deformation joints of the bridge can also have adverse effects on the building, causing some of the bridge to deform and affect the quality of the cable line during deformation and expansion changes.

（2）桥架安装时跨接接地不合格。

(2) The bridging grounding during bridge installation is not qualified.

在桥架安装时还会出现跨接接地不合格的问题，主要表现为：

During the installation of the bridge, there may also be issues with unqualified grounding of the bridge, mainly manifested as:

桥架跨接地线较细，截面积小于要求的4mm3，镀锌的桥架在连接板的两端没有安置防松的螺帽或者是防松的垫圈；在安装时，工作人员利用电焊把接地线焊到桥架上，从而造成桥架的保护层脱落；桥架的支架和金属的电缆导管没有接地，与地干线连接的点较少；

The bridge grounding wire is relatively thin, with a cross-sectional area less than the required 4mm3. The galvanized bridge does not have anti loosening nuts or washers installed at both ends of the connecting plate; During installation, the staff used electric welding to weld the grounding wire to the bridge, causing the protective layer of the bridge to fall off; The support of the bridge and the metal cable conduit are not grounded, and there are few points connected to the grounding main line;

还存在桥架没有与接地干线进行敷设的问题，使得用桥架系统进行接地干线回路构造时，不能够对两端间的接地电阻进行测试。桥架安装不合格，会对桥架的使用造成一定的危害。桥架使用截面积较小的跨接地线，会使得接线不牢固，易受到机械设备的损害，容易在使用的过程中存在安全问题。

There is still a problem where the cable tray is not laid with the grounding main line, which makes it impossible to test the grounding resistance between the two ends when constructing the grounding main line circuit using the cable tray system. Unqualified installation of the bridge can cause certain harm to the use of the bridge. The use of a small cross-sectional area jumper wire in the bridge can make the wiring unstable, vulnerable to mechanical equipment damage, and prone to safety issues during use.

而且，利用电焊直接在桥架上直接进行接地线焊接，会对桥架的保护层造成损害，使桥架容易受到腐蚀，减少了桥架的使用年限。对于金属的桥架以及金属的电缆导管，若是没有接地就会发生电的泄露，容易引起触电问题，存在安全隐患。

Moreover, using electric welding to directly weld the grounding wire on the bridge can damage the protective layer of the bridge, making it susceptible to corrosion and reducing its service life. For metal cable trays and conduits, if not grounded, electrical leakage can occur, which can easily cause electric shock and pose a safety hazard.

桥架在开展安装工程时就应该依据施工图的要求、电缆的实际数量、桥架所处的环境和电气管线，进行工程优化设计，进而绘制出桥架安装路径的平面图、剖面图和局部的空间图，并且附上详细的说明书。更多相关事项就来我们网站咨 //www.comprepyme.com询吧！

When carrying out the installation project of the bridge, the engineering optimization design should be based on the requirements of the construction drawings, the actual number of cables, the environment where the bridge is located, and the electrical pipelines. Then, a plan, profile, and local spatial map of the bridge installation path should be drawn, and detailed instructions should be attached. For more related matters, please come to our website for consultation //www.comprepyme.com Ask!