(1) The construction unit shall have an in-depth understanding of the pipeline direction and the whole bridge installation process according to the design drawings and their instructions. At the same time, we should also consider whether the bridge may be too long and whether there are deformation joints during the installation of the bridge, and set corresponding compensation measures in time.

(2)加强对接地线的设置。施工单位在施工过程中，要采用截面积>4 mm2的接地线，保证接地线的质量，对于跨接地的线路要进行接地，要把接地干线固定在桥架的支架和吊架上，金属桥架及其支架和吊架要进行接地处理。对于镀锌的电缆桥架，在其连接处要使用连接板进行固定，连接板的两端可以不使用跨接接地线(但是连接板的端部要使用防松垫圈);还要注意避免将接地干线直接焊接在桥架上，要对电缆桥架喷塑层的脱落部分进行去锈处理，再刷防锈漆，防止桥架的腐蚀。要在电缆桥架的两端端口、每隔30m的直线段、变形缝的连接两端处等部位与接地干线连接，要确保电缆桥架存在多于两处与接地干线连接。

(2) Strengthen the setting of grounding wire. During the construction, the construction unit shall adopt the grounding wire with a cross-sectional area of >4 mm2 to ensure the quality of the grounding wire. The cross grounding line shall be grounded, the grounding main line shall be fixed on the supports and hangers of the bridge, and the metal bridge and its supports and hangers shall be grounded. For the galvanized cable tray, the connecting plate shall be used for fixing at its connection, and the jumper grounding wire may not be used at both ends of the connecting plate (but the end of the connecting plate shall use a lock washer); Attention should also be paid to avoid welding the grounding main line directly on the bridge. The falling part of the plastic spraying layer of the cable bridge should be derusted, and then painted with antirust paint to prevent the corrosion of the bridge. Connect the two ends of the cable tray, the straight-line sections every 30m, the connecting ends of the deformation joints and other parts with the grounding main line, and ensure that there are more than two connections with the grounding main line in the cable tray.

(3)加强对电缆桥架与管道距离的控制。在安装时，施工单位要对缆桥架、给排水管道、空调管道、热力管道等的走向及交叉问题进行综合考虑，严格按照管道走向的布置图进行安装,确保电缆桥架与管道之间保持合理的距离。确保电缆桥架不设置在热力管道的上方，与热力管道保持合理的距离，若是电缆桥架与热力管道距离较近，就要设置相应的隔热措施。

(3) Strengthen the control of the distance between cable tray and professional pipeline. During installation, the construction unit shall comprehensively consider the direction and intersection of cable trays, water supply and drainage pipelines, air conditioning pipelines, heating pipelines, etc., and install in strict accordance with the layout of pipeline direction to ensure that a reasonable distance is maintained between cable trays and pipelines. Ensure that the cable tray is not set above the heat pipe, and keep a reasonable distance from the heat pipe. If the cable tray is close to the heat pipe, corresponding heat insulation measures should be set.

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