Prefabricated rail top air duct for metro station and construction method of air duct
A technology for rail top air ducts and subway stations, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc. It can solve problems such as difficult pouring and compaction, affecting the construction period of the whole line, and difficult construction, so as to facilitate transportation and hoisting , save the amount of concrete, no need for post-maintenance effect
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[0070] Example 1
[0071] figure 1 with figure 2 It is a front view and a rear view of a rail-top air duct of the present invention. The air duct on the top of the prefabricated rail includes a U-shaped air duct 2. The inner bottom plate of the duct and the two side plates are integrally formed, and the top of the air duct side plate is reserved with steel bars 4, which can be bent into an "L" shape or inside Hollow rebar connector. The air duct port is composed of an air duct bottom plate and two side plates, which has two end faces. One end of the air duct port is left with a protruding structure 5 extending outward, and the other end of the air duct port is provided with a first groove 18 corresponding to the protruding structure 5, so that the protruding structure 5 can be inserted into the first The groove 18 is also provided with a second groove 19 in the shape of a "mouth" inside the first groove 18 for filling the composite rubber sealing strip.
[0072] A hole 9 connec...
Example Embodiment
[0089] Example 2
[0090] Such as Image 6 Shown is a schematic structural diagram of the second embodiment of the present invention. The prefabricated rail top air duct includes side plates, bottom plates and partition walls 20. The side plates, bottom plates and partition walls 20 are provided with steel bars 4, which can be "L" shaped beard bars after bending treatment or In the hollow steel bar connector, the side plate, the bottom plate and the partition wall 20 are provided with section steel 13 which is in an inverted "T" shape, and a wooden template 14 is provided on the lower surface of the section steel 13. The long side of the bottom plate is divided into two parts by a partition.
[0091] The rail top air duct includes at least two, and one end of the bottom plate and the side plate is provided with a first groove 18, and the first groove 18 is filled with a composite rubber sealing strip. A pre-embedded steel box 21 is pre-embedded at one end of the bottom plate and ...
Example Embodiment
[0107] Example 3
[0108] In embodiment 3 of the present invention, the "U-shaped" or "W-shaped" rail-top air duct as in embodiment 1 or embodiment 2 is adopted. In this embodiment, the steel connector is embedded in the side plate of the rail-top air duct , The upper surface of the steel bar connector is flush with the upper surface of the rail top air duct side plate, and the connection between the other rail top air ducts is as described in Example 1 or Example 2, using flat end connection or receiving concave-convex The connection method of the interface.
[0109] Embodiment 3 of the present invention is a method for simultaneous construction of the prefabricated rail top air duct and the prefabricated superimposed middle slab or post-hung construction with the cast-in-place middle slab, including the following steps:
[0110] (1) Making a "U"-shaped rail top air duct, and pre-embedding steel connectors in the two side panels of the rail top air duct, and the upper surface of th...
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