怎么在桥架内敷设电缆？先来看看相关的施工流程：电缆敷设前绝缘摇测及耐压试验→水平敷设→垂直敷设→挂电缆标志牌。下面 山东桥架厂家讲讲后面事项。

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以下电缆，用1KV 摇表摇测线间及对地的绝缘电阻应不低于10MΩ。电缆敷设后未接线以前应用橡皮包布密封后用黑胶布包好。

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、 敷设方法可用人力或机械牵引。电缆应单层敷设，排列整齐，不得有交叉，拐弯处应以大截面电缆允许弯曲半径为准。不同等级电压的电缆应分层敷设，高电压电缆应敷设在上层。同等级电压的电缆沿支架敷设时，水平净距不小于35mm 。电缆敷设排列整齐，电缆首尾两端 转弯两侧及每隔5～10m 处设固定点。

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、垂直敷设，有条件的好自上而下敷设。土建未拆吊车前，将电缆吊至楼层顶部。敷设时，同截面电缆应先敷设低层，后敷设高层，要特别注意，在电缆轴附近和部分楼层应采取防滑措施。自下而上敷设时，低层小截面电缆可用滑轮大绳人力牵引敷设。高层大截面电缆宜用机械牵引敷设。电缆敷设时，每层少加装两道卡固支架。

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、 敷设时，应放一根立即卡固一根。电缆沿桥架敷设穿过楼板时，预留通洞，敷设完后应将洞口用防火材料堵死。电缆在超过45 °倾斜敷设或垂直敷设时，应在每个支架上进行固定（2m）,交流单芯电缆或分相后的每相电缆固定用的夹具和支架，不形成闭合铁磁回路。

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、标志牌规格应一致，并有防腐性能，挂装应牢固。标志牌上应注明电缆编号，起、止点，规格，型号及电压等级。字迹应清晰不易褪色。在桥架两端、拐弯处、交叉处和每隔50米处应挂电缆标志牌，直线段应适当增设标志牌。

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.

怎么在桥架内敷设电缆？以上就是有关的施工工艺内容了，您对此可以更好的使用，相关的注意事项可以来我们网站 //www.comprepyme.com咨询！

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 //www.comprepyme.com consulting service