根据强电和弱电选择填充率，桥架宽度和高度的选择应符合填充率的要求，电缆的梯架的填充率在一般情况下，电力电缆可取40%～50%，控制电缆可取50%～70%，且宜预留10%～25%工程发展裕量。

　　According to the filling rate of strong and weak electricity selection, the selection of the width and height of the bridge should be in accordance with the requirement of filling rate. The filling rate of the cable ladder is in general condition, the power cable is 40% to 50%, the control cable is 50% ~ 70%, and the development margin of 10% to 25% should be reserved.

　　负荷等级要大于预算等级，在选择梯式电缆桥架的荷载等级时，桥架的工作均布荷载不应大于所选桥架荷载等级的额定均布荷载，如果桥架的支吊架的实际跨距不等于2m时，则工作均布荷载应满足要求。

　　The load grade is greater than the budget grade. When choosing the load grade of the ladder type cable bridge, the uniform load of the bridge should not be larger than the rated uniform load of the load grade of the selected bridge. If the actual span of the bridge hanger is not equal to 2m, the uniform load should be full.

　　大跨距桥架要验证，对于跨距大于6m的钢制桥架和跨距大于2m或承载要求大于荷载等级D级的铝合金桥架，应按工程条件进行强度、刚度及稳定性的计算或试验验证。

　　A large span bridge should be verified that the strength, stiffness and stability of a steel bridge with a span of greater than 6m and an aluminum alloy bridge with a span greater than 2m or a load-carrying requirement of D higher than the load level should be calculated or tested.

　　是否有防火要求，桥架在有防火要求的区段内，可在梯架、托盘内添加具有耐火或难燃性能的板、网等材料构成封闭或半封闭式结构，并采取在桥架及其支吊架表面涂刷防火涂层等措施，其整体耐火性能应满足有关规范或标准的要求，在工程防火要求较高的场所，不宜采用铝合金电缆桥架。

　　If there are fire protection requirements, the bridge can be added to the ladder and tray with fireproof or flammable properties to form a closed or semi closed structure in the ladder and tray, and to apply a fire proof coating on the surface of the bridge and its supporting hanger, and the overall fire resistance of the bridge shall meet the national standards or the relevant standards. The standard requirement is that aluminum alloy cable bridge should not be used in places where fire safety requirements are high.

　　组件必须匹配，各种组件及支吊架在满足相应荷载的条件下，其规格尺寸应与托盘、梯架的直线段、弯通系列相匹配。

　　Components must be matched, and the specifications and sizes of various components and support frames should be matched with the line and bend series of the tray, the ladder frame and the staircase.

　　本文由山东电缆桥架为您提供，我们的网站是:http://www.sdhangfeng.com/我们将以全心全意的热情为您提供更的服务，欢迎您的访问!

　　This article from Shandong cable bridge for you to provide, our website is: http://www.sdhangfeng.com/ we will be wholehearted enthusiasm to provide you with more quality service, welcome to your visit!