1、确定方向：根据建筑布局，结合空调管线和电气管线设置，维修方便，以及电缆密度路由，确定较好的电缆桥架的较佳路由。室内，尽量沿建筑物的墙、柱、梁、楼板。采用公用隧道架设时，应在管道一侧或上方平行架设，并考虑引下线和支线尽量避免交叉。如果没有其他管道支架可以借用，则需要设置(支)柱。

1. Determine direction: Based on the building layout, combined with the setting of air conditioning and electrical pipelines, easy maintenance, and cable density routing, determine the optimal route for the cable tray. Indoors, try to follow the walls, columns, beams, and floors of the building as much as possible. When using public tunnels for installation, they should be installed parallel to or above the pipeline, and consideration should be given to avoiding the intersection of down conductors and branch lines as much as possible. If there are no other pipe supports available for borrowing, (support) columns need to be set up.

2、荷载计算：计算电缆桥架干线纵截面上单位长度的电缆重量。

2. Load calculation: Calculate the weight of cables per unit length on the longitudinal section of cable trays.

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、和规格、支架的长度、撑杆的长度和间距、桥架的宽度和层数根据电缆数量、电缆直径和电缆间距确定。

3. Determine the width of the cable tray: Determine the model and specifications of the cable tray, the length of the bracket, the length and spacing of the support rod, and the width and number of layers based on the number of cables, cable diameter, and cable spacing.

4、确定安装方式：根据现场的设置条件，选择悬挂式、立式、侧墙式或混合式。连接器和紧固件通常以匹配的方式提供。此外，根据桥架结构选择和折叠相应的盖板。

4. Determine installation method: Choose suspended, vertical, side wall, or hybrid based on the on-site setup conditions. Connectors and fasteners are usually provided in a matching manner. In addition, select and fold the corresponding cover plate according to the bridge structure.

5、绘制电缆桥平面图和剖面图，并绘制空间图和列出局部零件的材料清单。

5. Draw a plan and section diagram of the cable bridge, as well as a spatial diagram and a list of materials for local components.

电缆桥框架由薄钢板冲压而成。它的承载力有一定的出色。电缆桥框架的承载能力是与桥梁规格和支撑距离相关的量。对应相同的支撑距离和弯曲变形，边高大的桥梁承载力大，高小的桥梁承载力小。此外，当承载能力相同时，对于相同规格的电缆桥框架，支撑距离小的弯曲变形小于支撑距离大的弯曲变形。一般情况下，电缆桥机架每隔1.5 ~ 2.0m配备一套支撑架。

The cable bridge frame is stamped from thin steel plates. Its bearing capacity has a certain limit. The bearing capacity of a cable bridge frame is a quantity related to the bridge specifications and support distance. Corresponding to the same support distance and bending deformation, bridges with high edges have higher bearing capacity, while bridges with low heights have lower bearing capacity. In addition, when the bearing capacity is the same, for cable bridge frames of the same specifications, the bending deformation with a smaller support distance is smaller than that with a larger support distance. Generally, cable bridge frames are equipped with a set of support frames every 1.5~2.0m.