Bridge main cable structure

Abstract

The invention discloses a bridge main cable structure which comprises a protective sleeve, a plurality of cables arranged in the protective sleeve and a dry air preparation station with a dry air output port, at least one ventilation pipe is further arranged in the protective sleeve, one end of the ventilation pipe is connected with the dry air output port, the other end of the ventilation pipe extends from one end of the protective sleeve to the other end of the protective sleeve and penetrates the other end of the protective sleeve, and a plurality of air outlet holes are formed in the side wall, located in the protective sleeve, of the ventilation pipe at intervals. The dehumidification efficiency of the main cable can be remarkably improved, the corrosion phenomenon of the cable rope of the main cable is avoided, and then the durability and reliability of the main cable are improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bridge main cable structure. Background technique [0002] With the rapid development of the economy, the bridge construction achievements in the world have also made great leaps, and the number of cable-stayed bridges and suspension bridges is increasing rapidly. We know that the main cable is needed on cable-stayed bridges and suspension bridges. The main cable constitutes the most important load-bearing component of this type of bridge. During the long-term use of the bridge, the main cable cannot be replaced. Therefore, the reliability of the main cable Safety is critical to the safe operation of bridges. [0003] Existing main cables usually include a sheath tube and several strands of cables arranged in the sheath tube. Since the main cable of the bridge is usually exposed to the air, although the sheath tube can avoid the "sun and rain" of the cable to a ce...

AI Technical Summary

Problems solved by technology

[0005] But the above-mentioned dehumidification and antirust method of the main cable has the following technical defects: first, because the sheath tube is full of cables, that is to say, the space for the dry air to circulate in the sheath tube is extremely limited, so the flow of the dry air in the sheath tube Difficult, especially, in the inner center of the multi-strand cables, it is difficult for external dry air to enter, thus affecting the dehumidification effect

That is to say, the dry air entering the sheath tube only "dilutes" the humid air in the sheath tube, so the dehumidification time of the dry air is long and the dehumidification efficiency is low

When encountering continuous rainy weather, the cable may still be rusted due to failure to dehumidify in time

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