1、電纜橋架直線段之間、直線段與彎變直線段之間使用的連接件應(yīng)為電纜橋架廠生產(chǎn)的配套連接件。連接件鋼板厚度不得小于電纜橋架鋼板厚度。接口應(yīng)平整，無扭曲、凸出、凹陷。連接用的半圓頭鍍鋅螺栓應(yīng)位于電纜橋架內(nèi)側(cè)。螺栓長度適當(dāng)，擰緊后長度為2-5齒。

1. The connectors used between straight sections of cable trays and between straight sections and curved straight sections should be matching connectors produced by cable tray factories. The thickness of the connecting steel plate shall not be less than the thickness of the cable tray steel plate. The interface should be flat, without distortion, protrusion, or depression. The half round head galvanized bolts used for connection should be located on the inside of the cable tray. The bolt length is appropriate, with a length of 2-5 teeth after tightening.

2、水平安裝的電纜橋架和直線段的連接頭應(yīng)盡量放在兩個(gè)支吊架之間距離的四分之一左右。

2. The connection head between horizontally installed cable trays and straight sections should be placed as close as possible to about one-quarter of the distance between the two supports and hangers.

3、一般來說，施工現(xiàn)場不能制作電纜橋架。但因特殊原因需要時(shí)，可將現(xiàn)有直線梁橋改造為非標(biāo)準(zhǔn)彎孔型和直孔型。直線段電纜橋架改造切割時(shí)，不得采用氣焊、電焊切割，應(yīng)使用專用切割工具。改造后的電纜橋架建議光滑，及時(shí)上漆，使面漆的顏色與其他電纜橋架相近。

3. Generally speaking, cable trays cannot be made on construction sites. However, due to special reasons, existing straight beam bridges can be transformed into non-standard curved and straight hole types. When renovating and cutting straight cable trays, gas welding and electric welding cutting shall not be used, and specialized cutting tools shall be used. The renovated cable tray must be smooth and painted in a timely manner to make the color of the topcoat similar to other cable trays.

4、當(dāng)電纜橋架要跨越建筑物的伸縮縫時(shí)，根據(jù)GB50168的規(guī)定，應(yīng)設(shè)置伸縮縫，以保證電纜橋架和鋪設(shè)在電纜橋架內(nèi)部的電纜，在建筑物伸縮不危及自身安全的情況下，能自由伸縮，不受損壞。原因是在新建建筑中，電纜橋架通常是在混凝土結(jié)構(gòu)完工后幾個(gè)月甚至一年后安裝的，這時(shí)混凝土的收縮率逐漸減小。伸縮量一般不會(huì)超過建筑物伸縮縫的寬度L。如果發(fā)現(xiàn)或向土建單位了解到，建筑伸縮縫比較大，可能超過L，應(yīng)根據(jù)實(shí)際情況做伸縮處理。

4. When the cable tray needs to cross the expansion joint of the building, according to the provisions of GB50168, expansion joints should be set up to ensure that the cable tray and the cables laid inside the cable tray can freely expand and contract without endangering the safety of the building and without damage. The reason is that in newly constructed buildings, cable trays are usually installed several months or even a year after the completion of the concrete structure, during which the shrinkage rate of the concrete gradually decreases. The expansion amount generally does not exceed the width L of the building expansion joint. If it is found or learned from the civil engineering unit that the building expansion joint is relatively large and may exceed L, expansion treatment should be carried out according to the actual situation.