施工單位要根據(jù)設(shè)計(jì)圖紙及其說明，對(duì)管線走向、整個(gè)橋架安裝過程進(jìn)行深入了解。同時(shí)還要考慮到橋架安裝過程中可能出現(xiàn)的橋架是否過長、是否存在變形縫等問題，并且及時(shí)地設(shè)置相應(yīng)的補(bǔ)償措施。

The construction unit should have a deep understanding of the pipeline route and the entire bridge installation process based on the design drawings and their instructions. At the same time, it is necessary to consider whether the cable tray may be too long or have deformation joints during the installation process, and timely set corresponding compensation measures.

加強(qiáng)對(duì)接地線的設(shè)置。施工單位在施工過程中，要采用截面積>4 mm2的接地線，保證接地線的質(zhì)量，對(duì)于跨接地的線路要進(jìn)行接地，要把接地干線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(duì)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(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直接焊接在橋架上，要對(duì)電纜橋架噴塑層的脫落部分進(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的直線段、變形縫的連接兩端處等部位與接地干線連接，要確保電纜橋架存在多于兩處與接地干線連接。

Strengthen the setting of grounding wires. During the construction process, the construction unit should use grounding wires with a cross-sectional area greater than 4 mm2 to ensure the quality of the grounding wires. For cross grounded lines, grounding should be carried out, and the grounding main line should be fixed on the brackets and hangers of the bridge. The metal bridge and its brackets and hangers should be grounded. For galvanized cable trays, connection plates should be used to fix the connections, and the two ends of the connection plates do not need to use jumper grounding wires (but anti loose washers should be used at the ends of the connection plates); It is also important to avoid welding the grounding main line directly onto the cable tray. The peeled off parts of the spray coating on the cable tray should be treated with rust removal and then painted with anti rust paint to prevent corrosion of the tray. To connect to the grounding main line at both ends of the cable tray, every 30m of straight sections, and at the connection ends of deformation joints, it is necessary to ensure that there are more than two connections to the grounding main line on the cable tray.

加強(qiáng)對(duì)電纜橋架與專業(yè)管道距離的控制。在安裝時(shí)，施工單位要對(duì)纜橋架、給排水管道、空調(diào)管道、熱力管道等的走向及交叉問題進(jìn)行綜合考慮，嚴(yán)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(shè)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(shè)置相應(yīng)的隔熱措施。

Strengthen the control of the distance between cable trays and professional pipelines. During installation, the construction unit should comprehensively consider the direction and intersection issues of cable trays, water supply and drainage pipelines, air conditioning pipelines, thermal pipelines, etc., strictly follow the layout plan of pipeline direction for installation, and ensure that a reasonable distance is maintained between cable trays and pipelines. Ensure that the cable tray is not placed above the thermal pipeline and maintains a reasonable distance from it. If the cable tray is close to the thermal pipeline, corresponding insulation measures should be taken.