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Shandong Hongfeng Electric Group Co., Ltd.
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What is the relationship between cable tray deflection and span? Refer to 2023 bridge frame standard
Release time:
2023-12-11
The deflection of the bridge is one of the important indexes to measure the strength of the bridge plate
The deflection of the bridge is one of the important indexes to measure the strength of the bridge plate, and it is also one of the performance parameters that can be easily measured in practice.
Simply speaking, the deflection of the bridge tray refers to the actual offset in the vertical direction after the bottom plate of the tray is subjected to the vertical pressure of the cable.
The span of the bridge refers to the distance between the two bridge supports and hangers. Because the bridge is usually installed from the air or from the head of the cabinet equipment, it should be hoisted at the top or supported at the bottom. This section of the bridge between the two supports and hangers, under the pressure of the cable in the bridge, will sink naturally, and the deviation of sinking is the deflection, the greater the span, the greater the deflection.
This is one of the factors that should be considered when the cable tray manufacturer installs the alloy cable tray.
1. Deflection and span of steel bridge when laying lines, if the distance between two supports and hangers of a certain section of steel bridge is 2 meters, then the vertical sinking deviation of this section of steel bridge, that is, the deflection value can not be greater than 10mm2, the span and deflection of FRP bridge is 2 meters when laying FRP bridge, if the span between two hangers used for hoisting FRP bridge is 2 meters.
When installing aluminum alloy bridge, for example, the distance between the two supports supporting a certain section of aluminum alloy bridge is 2 meters, that is, the span is 2 meters, then the deflection value of this section of aluminum alloy bridge can not be greater than the table of the relationship between span and deflection in the standard of 2013 bridge under 6mm.
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