Cable bridge end structure and construction method for cable bridge to pass through fire compartment

Abstract

The invention provides a cable bridge end structure, and the structure comprises a bridge with three baffle plates. The end parts of the baffle plates are each provided with an everted end, and the everted ends form 90-degree bent left end face, right end face and lower end face, wherein three end faces are respectively provided with a plurality of installation holes. The invention also provides aconstruction method for a cable bridge to pass through a fire compartment, and the method comprises the steps: 1, separating the welding points of the three baffle plates of a cable bridge end by a certain length L; 2, enabling the separated ends to be everted by 90 degrees, and forming the left end face, the right end face and the lower end face; 3, sleeving a wall pre-buried steel pipe part through a bridge, enabling the left end face, the right end face and the lower end face to be attached to the surface of a wall, and fixing the left end face, the right end face and the lower end face through steel nails; 4, carrying out the filling of a fireproof material and the end blocking after the arrangement of the cable; 5, performing the covering through a bridge cover plate. The method greatly enlarges the contact area of the cable bridge and the wall, does not need to carry out the filling of the fireproof material at the inner sides of the baffle plates, is quick in construction, is large in contact area, and is good in fireproof and sealing effect. Moreover, the appearance is regular, neat and beautiful.

Description

technical field [0001] The invention relates to the technical field of building electrical construction, in particular to a construction method for an end structure of a cable bridge and a cable bridge passing through a fire compartment. Background technique [0002] At present, according to the "Air Defense Law of the People's Republic of China", new civil buildings in cities must build basements that can be used for air defense during wartime in accordance with relevant national regulations, which involves the situation where cable bridges pass through fire compartments. According to the requirements of building codes, cable trays cannot directly pass through fire compartments. At the same time, page 61 of 05SFD10 Atlas 5-5 introduces how cable trays pass through fire compartments. However, the atlas does not specify how the bridge frame is connected to the steel pipes. The traditional method is to directly cover the steel pipe with the cable bridge, and then block it wit...

AI Technical Summary

Problems solved by technology

The disadvantages of this are as follows: 1. The fireproof material is not easy to fill completely, because the connection between the cable bridge and the steel pipe is inconvenient for construction and operation; Small but more steel pipes are reserved); 3. The traditional method of bridge cover is not easy or impossible to install, and the visual effect is not very beautiful

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