Cable Bridge Specifications Selection And Configuration

1.The width and height of the bridge is selected according to the following table, and should comply with the cable filling rate does not exceed the specified value of the relevant standard specifications, the power cable can be 40-50%, the control cable can be 50-70%, and the other need to reserve 10-25% of the process development margin.
2.All kinds of bending and accessories specifications should meet the engineering layout conditions and match with the bridge.
3. The selection of support and hanger specifications should be configured according to the specifications of the bridge, the number of layers, and the span. And should meet the requirements of the load.
4. The selection of the cross-sectional area of the bridge is shown in the table
Third, the configuration of support and hanger
1.Indoor support, lifting short span generally take 1.5-3m. The span in the outdoor column is generally 6m.
2.The non-linear section of the support, hanger configuration follow the following principles. When the width of the bridge is less than 300mm, a support and hanger should be set on the side of the straight section 300-600m away from the joint of the non-straight section and the straight line. When the width of the bridge is >300mm, in addition to meeting the following conditions, a support and hanger should be added in the middle of the non-linear section.
3. When the multi-layer bridge is set, the center distance between the layers is 200,250,300,350 mm.
4. The expansion joint of 20-30mm (metal bridge) should be left every 50m in the straight section of the bridge.