(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)加強對接地線(xiàn)的設置。施工單位在施工過(guò)程中，要采用截面積>4 mm2的接地線(xiàn)，保證接地線(xiàn)的質(zhì)量，對于跨接地的線(xiàn)路要進(jìn)行接地，要把接地干線(xiàn)固定在橋架的支架和吊架上，金屬橋架及其支架和吊架要進(jìn)行接地處理。對于鍍鋅的電纜橋架，在其連接處要使用連接板進(jìn)行固定，連接板的兩端可以不使用跨接接地線(xiàn)(但是連接板的端部要使用防松墊圈);還要注意避免將接地干線(xiàn)直接焊接在橋架上，要對電纜橋架?chē)娝軐拥拿撀洳糠诌M(jìn)行去銹處理，再刷防銹漆，防止橋架的腐蝕。要在電纜橋架的兩端端口、每隔30m的直線(xiàn)段、變形縫的連接兩端處等部位與接地干線(xiàn)連接，要確保電纜橋架存在多于兩處與接地干線(xiàn)連接。

(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)加強對電纜橋架與管道距離的控制。在安裝時(shí)，施工單位要對纜橋架、給排水管道、空調管道、熱力管道等的走向及交叉問(wèn)題進(jìn)行綜合考慮，嚴格按照管道走向的布置圖進(jìn)行安裝,確保電纜橋架與管道之間保持合理的距離。確保電纜橋架不設置在熱力管道的上方，與熱力管道保持合理的距離，若是電纜橋架與熱力管道距離較近，就要設置相應的隔熱措施。

(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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