A sling protection structure that is convenient for dehumidification

Abstract

The invention discloses convenient-to-dehumidify suspension cable protective structure, which comprises an upper end anchorage component, a lower end anchorage component and a cable. The upper end anchorage component comprises an upper anchorage cup and an upper end connection barrel; the lower end anchorage component comprises a lower anchorage cup and a lower end connection barrel; the upper anchorage cup is internally provided with an air inlet reserved space; the lower anchorage cup is internally provided with an air outlet reserved space. The convenient-to-dehumidify suspension cable protective structure comprises an air inlet pipe, an air inlet passage, an air outlet passage and an air outlet pipe. The air inlet pipe is inserted into the air inlet reserved space; one end of the air inlet pipe is communicated with the interior of the air inlet reserved space while the other end is communicated to the top end of a PE protective sleeve; the air outlet pipe is inserted into the air outlet reserved space; one end of the air outlet pipe is communicated with the interior of the air outlet reserved space while the other end is communicated to the bottom end of the PE protective sleeve. By feeding of clean and dry air into a suspension cable, an internal durable dry environment of the suspension cable is constantly kept, and parallel steel wires in the suspension cable are protected from corrosion, so that the service life of the cable is prolonged effectively.

Description

technical field [0001] The invention relates to the technical field of bridge anticorrosion, in particular to a dehumidification and anticorrosion system for suspension bridge suspension cables and a performance detection method thereof. Background technique [0002] The sling is a force-bearing component composed of steel wires. At present, the sling protection used in China is mainly to isolate the steel wire from the external atmosphere, such as the PE sheath of the parallel steel wire sling and the paint coating of the steel wire rope sling. Even so, corrosion of steel wires in the sling cannot be avoided. The connection between the sling and the anchor head is often due to a large difference in stiffness. Under the action of reciprocating loads, the sling protective cover is most likely to be damaged, so corrosion often occurs at the connection between the sling and the anchor head. The steel wires of the sling system are all made of high-strength steel wires, and have...

AI Technical Summary

Problems solved by technology

The steel wires of the sling system are all made of high-strength steel wires, and have a relatively large safety factor. The attenuation of its resistance is mainly caused by corrosion and broken wires. Even if the damage does not reach the critical state of normal use, when the bridge structure encounters the occasional extreme load of strong wind When active, the sling member may still fail

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