电缆桥架作为布线工程的一个配套项目，目前尚无专门的规范指导，生产厂家的规格程式缺乏通用性，因此，设计选型过程应根据弱电各个系统缆显得类型、数量，合理选定适用的济南电缆桥架。

As a supporting project of the cabling project, there is no special specification guidance at present, and the manufacturer's specification program is lack of universality. Therefore, the design and selection process should reasonably select the applicable Jinan cable bridge according to the type and quantity of cables in the weak current system.

(1)确定方向：根据建筑平面布置图，结合空调管线和电气管线等设置情况、方便维修，以及电缆路由的疏密来确定电缆桥架的较佳路由。在室内，尽可能沿建筑物的墙、柱、梁及楼板架设,如许利用综合管廊架设时，则应在管道一侧或上方平行架设，并考虑引下线和分支线尽量避免交叉，如无其它管架借用,则需自设立(支)柱。

(1) Determine the direction: determine the better route of cable tray according to the building layout plan, combined with the setting of air conditioning pipeline and electrical pipeline, convenient maintenance, and the density of cable route. In the room, it shall be erected along the walls, columns, beams and floors of the building as far as possible. If it is possible to use the integrated pipe gallery for erection, it shall be erected in parallel on one side or above the pipe, and the down lead and branch line shall be avoided from crossing as far as possible. If there is no other pipe rack to borrow, it is necessary to set up (support) columns by itself.

(2)荷载计算：计算电缆桥架主干线纵断面上单位长度的电缆重量。

(2) Load calculation: calculate the weight of cable per unit length on the profile of cable bridge trunk line.

(3)确定桥架的宽度：根据布放电缆条数、电缆直径及电缆的间距来确定电缆桥架的型号、规格,托臂的长度,支柱的长度、间距,桥架的宽度和层数。

(3) Determine the width of the cable tray: determine the model and specification of the cable tray, the length of the arm, the length and spacing of the support, the width and number of layers of the cable tray according to the number of cables laid, the diameter of the cable and the spacing of the cable.

(4)确定安装方式：根据场所的设置条件确定桥架的固定方式，选择悬吊式、直立式、侧壁式或是混合式，连接件和紧固件一般是配套供应的，此外，根据桥架结构选折相应的盖板。

(4) Determine the installation method: determine the fixing method of the bridge according to the setting conditions of the site. Select the suspension type, vertical type, side wall type or hybrid type. The connectors and fasteners are generally supplied together. In addition, select the corresponding cover plate according to the bridge structure.

(5)绘出电缆桥架平、剖面图，局部部位还应绘出空间图，开列材料表。

(5) Draw the plane and section drawings of the cable tray, and the space map and material list for local parts.

如与电力电缆桥架合用时，应将电力电缆和弱电电缆各直一侧，中间采用隔板分隔。弱电电缆与其它低电压电缆合用桥架时，应严格执行选择具有外屏蔽层的弱电系统的弱电电缆，避免相互间的干扰。更多相关内容就来我们网站http://www.sddlqj.cn咨询！

If it is used together with the power cable bridge, the power cable and the weak current cable shall be separated on the straight side with a partition in the middle. When the weak current cable shares the bridge with other low voltage cables, the weak current cable of the weak current system with external shielding layer shall be strictly selected to avoid mutual interference. Come to our website for more relevant content http://www.sddlqj.cn consulting service