电缆桥架由室外进入建筑物内时，桥架向外的坡度不得小于1/100。 电缆桥架与用电设备交越时，其间的净距不小于0.5m。桥架支撑点， 如立柱、托臂或非标准支、构架 的间距、安装方式、型号规格、标高，可同意在平面上列表说明，也可分段标 出用不同的剖面图、单线图或大样图表示。

When the cable bridge comes into the building from outside, the slope of the bridge shall not be less than 1/100. When the cable bridge is crossed with the electrical equipment, the net spacing between them is not less than 0.5m. Bridge support points, such as columns, brackets or non-standard supports, spacing between frames, installation methods, model specifications, elevation, can be agreed to be listed in the plane, but also can be marked in sections with different sections, single-line drawings or protracted graphs.

电缆桥架表示集中荷载和均布荷载的弯距按大弯距相等的条件折算：令 pι/4=q2ι2/8则q2=2p/ι ∵P=90kg ∴q2=180/ι 式中：P--1人的荷载(kg) ι--1个支 撑点间距(若支点间距不等时取大值)(m) q2--1 人的等效均布荷载(kg/m) 根据上述初步确定的桥架型号、规格及支点间距，查阅生产厂家的样本资料，反 复核查间距和桥架型号，直满足负荷要求为止。

The bending distances of cable bridges representing concentrated loads and uniformly distributed loads are converted according to the condition that the maximum bending distances are equal: if p/4=q2_2/8, then q2=2p/_P=90kg_q2=180/_, the load (kg) of P--1 person_--the maximum spacing of one supporting point (m) q2--1 person's equivalent uniformly distributed load (kg/m) is determined according to the above preliminary results. The type, specification and fulcrum spacing of the bridge are fixed, and the sample data of the manufacturer are consulted. The spacing and type of the bridge are checked repeatedly until the load requirements are met.

电缆桥架挠度挠度值如何取定，目前尚无明确的规定，在重负区显然应考虑减小绕度，这意味着钢材的用量会相应 增加，因此， 计算时只要充分利用钢材的大允许应力，并保证有足够的系 数，一般大挠度与跨距(支撑点间距)之比取1/250~1/150为宜。

There is no definite stipulation on how to determine the deflection value of cable bridge frame. It is obvious that the reduction of the winding should be considered in the load-bearing area, which means that the amount of steel will increase correspondingly. Therefore, the calculation should make full use of the maximum allowable stress of steel and ensure sufficient safety factor, generally the maximum deflection and span (support). The ratio of point spacing to 1/250~1/150 is appropriate.

电缆桥架引下点位置及引下方式， 一般而言，大批电缆引下可用垂直弯接板和垂直引上架，少量电缆引下可用导 板或引管，注明引下方式即可。特殊部件如垂直弯接板，转弯接板等则需分别统计。

Generally speaking, a large number of cables can be pulled down by vertical bending plate and vertical pulling up frame, and a small number of cables can be pulled down by guide plate or pipe, indicating the way of pulling down. Special components such as vertical bending plate and turning connecting plate need to be counted separately.

 

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