梯级式桥架选用注意事项

Notices for Selection of Cascade Bridge Frame

梯级式电缆桥架具有分量轻，构造简单，本钱低，强度大，造型别具，设备便当、散热、透气性好等优点，运用小量化的衔接螺栓，它适用于普通直径较大电缆的敷设，特别适用于高、高压动力电缆的敷设。梯级式电缆桥架备有护罩，需求配护罩时可在订购时注明，其一切配件与托盘式、槽式桥架通用。

The cascade cable bridge has the advantages of light weight, simple structure, low cost, high strength, unique shape, convenient equipment, heat dissipation and good air permeability. It is suitable for laying ordinary large diameter cables, especially for laying high and high voltage power cables by using minimum quantified connecting bolts. The cascade cable bridge frame is equipped with protective cover, which can be indicated when ordering. All its accessories are common with tray and trough bridge frames.

1.桥架、线槽及其支吊架运用在有腐蚀性环境中，应选用耐腐蚀的刚性材料制造，或采用防腐蚀处置，防腐蚀处置方式应称心工程环境和耐久性的要求。

1. Bridges, troughs and their supports and hangers should be made of rigid corrosion-resistant materials in corrosive environments, or be treated with corrosion protection, which should satisfy the requirements of engineering environment and durability.

2.桥架在有防火要求的区段内，可在电缆梯架、托盘内添加具有耐火或难燃功用的板、网等材料构成封闭或半封闭式构造，并采用在桥架及其支吊架表面涂刷防火涂层等方法，其全体耐火功用应称心国度有关标准或标准的要求。

2. In the section with fire-proof requirements, the bridge frame can be constructed by adding fire-proof or flame-proof plates, nets and other materials to the cable ladder and tray to form a closed or semi-closed structure. The bridge frame and its supporting suspension surface can be coated with fire-proof coatings, etc. The fire-proof functions of the bridge frame and its supporting suspension should be satisfied with the requirements of relevant national standards or standards.

3.在工程防火要求较高的场所，不宜选用铝合金桥架。

3. Aluminum alloy bridge should not be used in places with high fire protection requirements.

4.电缆梯架宽度和高度的挑选应契合填充率的要求，电缆的梯架的填充率在普通状况下，电力电缆可取40%～50%，操控电缆可取50%～70%，且宜预留10%～25%工程展开裕量。

4. The selection of cable ladder width and height should meet the requirement of filling rate. Under normal conditions, the filling rate of cable ladder can be 40%-50% for power cable, 50%-70% for control cable, and 10%-25% for engineering development margin should be reserved.

5.在挑选电缆梯架的荷载等级时，桥架的作业均布荷载不该大于所选桥架荷载等级的额定均布荷载，假设桥架的支吊架的理论跨距不等于2m时，则作业均布荷载应称心要求。

5. When selecting the load grade of cable ladder, the operating uniform load of the bridge should not be greater than the rated uniform load of the selected bridge load grade. Assuming that the theoretical span of the suspension of the bridge is not equal to 2 m, the operating uniform load should be satisfied.

6.各种组件及支吊架在称心相应荷载的条件下，其规范尺度应与托盘、梯架的直线段、弯通系列相婚配

6. All kinds of components and supports and hangers should be matched with trays, straight sections of ladders and bend-through series under the condition of satisfying corresponding loads.

7.在挑选桥架的弯通或引上、引下设备时，不该小于桥架内电缆小容许迂回半径。

7. The minimum allowable deviation radius of cables in the bridge should not be less than the minimum allowable deviation radius of cables in the bridge when selecting the bending or leading up or down equipment of the bridge.

8.关于跨距大于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，应按工程条件停止强度、刚度及波动性的核算或实验验证。

8. For steel bridges with spans greater than 6m and aluminium alloy bridges with spans greater than 2m or bearing requirements greater than load grade D, strength, stiffness and fluctuation should be checked and verified according to engineering conditions.

9.几组桥架在同一高度平行敷设时，各相邻电缆桥架之间应思索维护、检修距离。

9. When several groups of bridges are laid parallel at the same height, the distance between adjacent cable bridges should be considered for maintenance and repair.

综上所述有济南航丰实业有限公司提供，想了解更多山东电缆桥架知识，欢迎关注我们的网站：http://www.sdhangfeng.com谢谢支持！

In summary, all the above-mentioned Jinan Hangfeng Industrial Co., Ltd. provides, want to know more about Shandong cable bridge, welcome to pay attention to our website: http://www.sdhangfeng.com Thank you for your support!