怎么在橋架內敷設電纜？先來看看相關的施工流程：電纜敷設前絕緣搖測及耐壓試驗→水平敷設→垂直敷設→掛電纜標志牌。下面山東橋架廠家講講后面事項。

How to lay cables in the bridge? Let's take a look at the relevant construction process: insulation shake test and withstand voltage test before cable laying → horizontal laying → vertical laying → hanging cable signs. Next, Shandong bridge manufacturers will talk about the following matters.

1、 1KV以下電纜，用1KV 搖表搖測線間及對地的絕緣電阻應不低于10MΩ。電纜敷設后未接線以前應用橡皮包布密封后用黑膠布包好。

1. For cables below 1kV, use 1kV megger to measure the insulation resistance between wires and to the ground, which shall not be less than 10m Ω. The cables shall be sealed with rubber wrap and wrapped with black tape after laying and before wiring.

2、 敷設方法可用人力或機械牽引。電纜應單層敷設，排列整齊，不得有交叉，拐彎處應以大截面電纜允許彎曲半徑為準。不同等級電壓的電纜應分層敷設，高電壓電纜應敷設在上層。同等級電壓的電纜沿支架敷設時，水平凈距不小于35mm 。電纜敷設排列整齊，電纜首尾兩端 轉彎兩側及每隔5～10m 處設固定點。

2. The laying method can be manually or mechanically pulled. Cables shall be laid in a single layer and arranged neatly without crossing. The bending radius of large section cables shall prevail at the turning. Cables of different levels of voltage shall be laid in layers, and high-voltage cables shall be laid in the upper layer. When cables of the same voltage are laid along the support, the horizontal clear distance shall not be less than 35mm. The cables shall be laid in order, and fixed points shall be set at both sides of the turns at both ends of the cable and every 5-10m.

3、垂直敷設，有條件的好自上而下敷設。土建未拆吊車前，將電纜吊至樓層頂部。敷設時，同截面電纜應先敷設低層，后敷設高層，要特別注意，在電纜軸附近和部分樓層應采取防滑措施。自下而上敷設時，低層小截面電纜可用滑輪大繩人力牽引敷設。高層大截面電纜宜用機械牽引敷設。電纜敷設時，每層少加裝兩道卡固支架。

3. It shall be laid vertically and from top to bottom if conditions permit. Before the crane is removed for civil works, the cable shall be hoisted to the top of the floor. During laying, cables with the same cross-section shall be laid on the low floor first and then on the high floor. Special attention shall be paid to taking anti-skid measures near the cable shaft and on some floors. When laying from bottom to top, low-level cables with small cross-section can be manually pulled by pulleys and ropes. High rise large section cables should be laid by mechanical traction. During cable laying, each layer shall be equipped with at least two clamping supports.

4、 敷設時，應放一根立即卡固一根。電纜沿橋架敷設穿過樓板時，預留通洞，敷設完后應將洞口用防火材料堵死。電纜在超過45 °傾斜敷設或垂直敷設時，應在每個支架上進行固定（2m）,交流單芯電纜或分相后的每相電纜固定用的夾具和支架，不形成閉合鐵磁回路。

4. When laying, one should be placed and one should be clamped immediately. When the cable is laid along the bridge and passes through the floor, a through hole shall be reserved. After laying, the hole shall be blocked with fireproof materials. When cables are laid at an angle of more than 45 ° or vertically, they shall be fixed on each support (2m). Clamps and supports for fixing AC single core cables or cables of each phase after phase separation shall not form a closed ferromagnetic circuit.

5、標志牌規格應一致，并有防腐性能，掛裝應牢固。標志牌上應注明電纜編號，起、止點，規格，型號及電壓等級。字跡應清晰不易褪色。在橋架兩端、拐彎處、交叉處和每隔50米處應掛電纜標志牌，直線段應適當增設標志牌。

5. The signboards shall have the same specifications and anti-corrosion performance, and shall be firmly hung. The cable number, starting and ending points, specification, model and voltage grade shall be indicated on the signboard. The handwriting shall be clear and not easy to fade. Cable signboards shall be hung at both ends, corners, intersections and every 50 meters of the bridge, and signboards shall be properly added at the straight section.

怎么在橋架內敷設電纜？以上就是有關的施工工藝內容了，您對此可以更好的使用，相關的注意事項可以來我們網站http://www.yeeones.com咨詢！

How to lay cables in the bridge? The above is the relevant construction process content. You can use it better. Relevant precautions can be found on our website http://www.yeeones.com consulting service