CN212177195U - Split type prefabricated rail top air duct - Google Patents
Split type prefabricated rail top air duct Download PDFInfo
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- CN212177195U CN212177195U CN202020209603.3U CN202020209603U CN212177195U CN 212177195 U CN212177195 U CN 212177195U CN 202020209603 U CN202020209603 U CN 202020209603U CN 212177195 U CN212177195 U CN 212177195U
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Abstract
The utility model provides a split type prefabricated rail top air duct, which comprises a top plate and a bottom plate, wherein the same end of the top plate and the bottom plate is provided with an internal fixed wall, the other end of the top plate and the bottom plate is provided with a side plate, the top plate and the side plate are prefabricated and formed in an integrated manner, and the bottom plate and the internal fixed wall are prefabricated and formed in an integrated manner; the bottom end of the side plate is provided with a protruding part for bearing the end part of the bottom plate, and a detachable mounting structure is arranged between the top end of the inner fixed wall and the top plate; and a plurality of connecting steel bars are reserved on the top plate and the side plates. The utility model discloses can still can ensure the construction quality in rail top wind channel under the low precision condition of current pouring, can effectively improve the bulk rigidity between medium plate and the rail top wind channel moreover, improve the efficiency of construction.
Description
Technical Field
The utility model belongs to the technical field of subway station ventilation system, concretely relates to split type prefabricated railhead wind channel.
Background
The rail top air duct, namely the train top exhaust duct, is an important internal structural component in a ventilation system of a subway station and is suspended at the joint position of a middle plate and a structural side wall of the station. The rail top air channel mainly has the following functions: 1) ventilating and radiating the top of the train to reach the standard that the highest temperature in the tunnel in summer does not exceed 40 ℃; 2) as a fixed base surface of the contact net; 3) as an upper load bearing and sealing member for a screen door or a safety door.
Due to the particularity of the position of the air duct, the construction is mainly carried out by adopting a later pouring method at present, and particularly, the rail top air duct must be poured later at a station through which shield construction needs to pass. The main construction process of later-stage pouring of the rail top air duct comprises the following steps: erecting a steel pipe support → cutting embedded steel bars → installing integral steel bars → installing an air duct bottom plate template → checking reserved holes → acceptance inspection → pouring bottom plate and concrete of the lower half part of the hanging wall → installing a hanging wall template → acceptance inspection → pouring concrete of the hanging beam.
However, in the present preparation technique of rail top wind channel, because the station medium plate is mostly cast-in-place board, consequently have following problem:
1) when the middle plate is cast in place, the precision of the reserved installation position is difficult to control, and the rail top air duct cannot be normally installed in the later stage;
2) local angular points for connecting the steel bars are excavated by the steel bars, and the connection rigidity is insufficient;
3) the post-cast connection mode has the problems of secondary pouring, difficult construction, low efficiency and long construction period.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned shortcoming, the utility model aims at providing a split type prefabricated railhead wind channel can still ensure the construction quality in railhead wind channel under the low precision condition of current pouring, can effectively improve the bulk rigidity between medium plate and the railhead wind channel moreover, improves the efficiency of construction.
The utility model provides a technical scheme that its technical problem adopted is:
a split type prefabricated rail top air duct comprises a top plate and a bottom plate, wherein an inner fixed wall is arranged at the same end of the top plate and the bottom plate, side plates are arranged at the other ends of the top plate and the bottom plate, the top plate and the side plates are integrally prefabricated and formed, and the bottom plate and the inner fixed wall are integrally prefabricated and formed;
the bottom end of the side plate is provided with a protruding part for bearing the end part of the bottom plate, and a detachable mounting structure is arranged between the top end of the inner fixed wall and the top plate; the mounting structure comprises a first fixing hole and a second fixing hole, the first fixing hole is reserved on the top plate, the second fixing hole is reserved at the top end of the inner fixing wall, the first fixing hole and the second fixing hole are arranged oppositely, and fasteners are detachably arranged in the first fixing hole and the second fixing hole;
and a plurality of connecting steel bars are reserved on the top plate and the side plates.
Preferably, the connecting steel bars comprise transverse steel bars and a plurality of vertical tie bars which are arranged on the top plate; the two ends of the transverse reinforcing steel bars extend out of the lateral plates and the outer sides of the inner fixing walls respectively, and the vertical reinforcing steel bars extend out of the top plate.
Preferably, the connecting steel bars comprise vertical steel bars and a plurality of transverse tie bars which are arranged on the side plates; the two ends of the vertical reinforcing steel bars extend out of the outer sides of the top plate and the bottom plate respectively, and the transverse tie bars extend out of the outer sides of the side plates.
Preferably, the first fixing hole and the second fixing hole are both threaded holes; the fastener is a bolt.
Preferably, the joint of the top plate and the side plate is provided with an inclined part, and the inclined part, the side plate and the top plate are integrally prefabricated and molded;
the inclined part is also provided with the connecting steel bars in a reserved mode.
Preferably, a through hole is reserved in the bottom plate.
Preferably, a mounting stop block is arranged between one end of the bottom plate close to the side plate and the side plate.
Preferably, the outer surfaces of the top plate, the inclined portion and the side plate are all provided with rough surfaces.
Compared with the prior art, the beneficial effects of the utility model are that:
according to the scheme, a novel prefabricated rail top air channel is adopted, post-pouring conditions such as reservation of connecting reinforcing steel bars and arrangement of a rough surface are reserved on the prefabricated rail top air channel, connection with a station main body and concrete cast-in-place operation can be facilitated in the later period, a mode of connection with the station reinforcing steel bars is formed before a main body medium plate is poured, and the connection rigidity between the rail top air channel and the subway station main body is effectively ensured; the prefabricated rail top air channel can provide a supporting function by self-stress while serving as a rail top air channel, and concrete load and construction load when a slab is cast in place in a main body are met; simultaneously, the bottom die is also used as a middle plate of the station main body and forms a superposed structure with the middle plate of the station main body; make and form holistic atress system between station main part medium plate and the rail top wind channel, increased the bulk rigidity effectively.
In addition, the rail top air duct in the scheme can be completely prefabricated, so that the pouring period in a station main body building time field is greatly shortened, and the pollution of a construction site to the environment is reduced; and the prefabrication of the rail top air channel is convenient for the standardization of an assembly type structure, thereby realizing industrial production, improving the production quality and efficiency and further reducing the production cost. The prefabricated rail top air channel integrated construction method has the advantages that the prefabricated assembly and the cast-in-place are organically combined, requirements for construction precision are reduced compared with the existing assembly type scheme, meanwhile, the integrated construction of middle plate pouring and the prefabricated rail top air channel is achieved, procedures are reduced, original construction time is greatly shortened, and the prefabricated rail top air channel integrated construction method has great advantages in the aspects of construction quality, production cost, construction precision requirements, construction period and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is the utility model discloses the structural schematic diagram in prefabricated rail top wind channel.
Fig. 2 is the utility model discloses the decomposition structure schematic diagram in prefabricated rail top wind channel.
Fig. 3 is the utility model discloses the construction schematic diagram when using prefabricated rail top wind channel.
Wherein:
1-prefabricated rail top air duct, 11-top plate, 111-transverse steel bar, 112-vertical tie bar, 12-bottom plate, 121-installation block, 13-internal fixing wall, 132-fixing hole, 14-side plate, 141-vertical steel bar, 142-transverse tie bar, 143-convex part, 15-inclined part, 16-rough surface and 18-through hole;
2-main body of station, 21-main body bottom plate, 22-side wall, 23-middle plate.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1 to 3, the present embodiment provides a split type prefabricated rail top duct 1, which mainly includes a top plate 11, a bottom plate 12, an inner fixed wall 13 and side plates 14. The top plate 11 and the bottom plate 12 are arranged in parallel, the inner fixing wall 13 is arranged at the same end of the top plate 11 and the bottom plate 12, and the side plate 14 is arranged at the other end of the top plate 11 and the bottom plate 12.
Furthermore, an inclined part 15 is arranged at the joint of the top plate 11 and the side plate 14, the inclined part 15 and the top plate 11 are prefabricated and molded in an integrated manner; the bottom plate 12 and the inner fixing wall 13 are integrally prefabricated and formed. Through two prefabricated shaping and carry out the mode that the assembly combines and form prefabricated rail top wind channel 1, make prefabricated installation of prefabricated rail top wind channel 1 can be more high-efficient to the maintenance change in later stage can be more convenient, reduces prefabricated rail top wind channel 1's application cost.
The bottom end of the side plate 14 is provided with a convex part 143 for bearing the end part of the bottom plate 12, and a detachable mounting structure 131 is arranged between the top end of the inner fixed wall 13 and the top plate 11; when the prefabricated rail top air duct 1 is installed, one end of the bottom plate 12 is ridden on the protrusion 143, and the other end is fixedly installed through the installation structure 131, so that the prefabricated rail top air duct 1 can be installed and used. The bottom plate 12 is also provided with a through hole 18 in advance.
A plurality of connecting steel bars are reserved on the top plate 11, the inclined part 15 and the side plate 14, and the reserved connecting steel bars can be conveniently poured integrally with the station main body 2 in a later period; in this embodiment, the outer surfaces of the top plate 11, the inclined portion 15 and the side plate 14 are all set to be rough surfaces 16, so that later-stage pouring and combination are further facilitated, and overall connection rigidity is improved.
Preferably, the connecting reinforcement includes a transverse reinforcement 111 and a plurality of vertical reinforcements 112 disposed on the top plate 11, and a vertical reinforcement 141 and a plurality of transverse reinforcements 142 disposed on the side plates 14. Two ends of the transverse steel bar 111 respectively extend out of the side plates 14 and the outer side of the inner fixed wall 13, and the vertical tie bars 112 extend out of the top plate 11; the two ends of the vertical steel bar 141 extend out of the top plate 11 and the bottom plate 12, and the plurality of transverse tie bars 142 extend out of the side plates 14.
Further, the mounting structure is provided in the form of a fixing hole 132 including a first fixing hole reserved on the top plate 11, a second fixing hole reserved on the top end of the inner fixing wall 13; the first fixing hole and the second fixing hole are arranged oppositely, and a fastener is detachably arranged in the first fixing hole and the second fixing hole.
Further, the first fixing hole and the second fixing hole are threaded holes, and the fastening piece is a bolt.
Preferably, a mounting stop 121 is further arranged in a gap between one end of the bottom plate 12 close to the side plate 14 and the side plate 14, so that the prefabricated rail top air duct 1 is compactly mounted, and the assembly quality is ensured.
In order to facilitate further understanding of the present scheme, the present embodiment further provides a construction method, which is suitable for the above specific application of the prefabricated rail top duct 1 in the construction of the subway station main body 2, as shown in fig. 3, and includes the following steps:
s1, constructing the main body bottom plate 21 and part of the side walls 22 of the subway station.
S2, erecting the prefabricated rail top air duct 1 and a middle plate 23 bottom die of the subway station, and connecting the connecting steel bars reserved on the prefabricated rail top air duct 1 with the steel bars of the station main body 2, wherein at least part of the prefabricated rail top air duct 1 is embedded in the pre-pouring range of the station main body 2. The inclined part 15 is arranged corresponding to the axillary angle between the middle plate 23 and the side wall 22 of the station main body 2, the top plate 11 is embedded in the pre-pouring range of the middle plate 23 of the station main body 2, and the lower end surface of the top plate 11 is flush with the lower end surface of the middle plate 23; the side plates 14 are embedded in the pre-pouring range of the side walls 22 of the station main body 2, and the inner side surfaces of the side plates 14 are flush with the inner side surfaces of the side walls 22.
S3, pouring the middle plate 23 and the unfinished side wall 22 of the station main body 2, and finishing the integral construction of the precast rail top air duct 1 and the station main body 2.
And S4, completing construction of the rest part of the station main body 2.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (8)
1. The split type prefabricated rail top air duct is characterized by comprising a top plate and a bottom plate, wherein an inner fixed wall is arranged at the same end of the top plate and the bottom plate, a side plate is arranged at the other end of the top plate and the other end of the bottom plate, the top plate and the side plate are integrally prefabricated and formed, and the bottom plate and the inner fixed wall are integrally prefabricated and formed;
the bottom end of the side plate is provided with a protruding part for bearing the end part of the bottom plate, and a detachable mounting structure is arranged between the top end of the inner fixed wall and the top plate; the mounting structure comprises a first fixing hole and a second fixing hole, the first fixing hole is reserved on the top plate, the second fixing hole is reserved at the top end of the inner fixing wall, the first fixing hole and the second fixing hole are arranged oppositely, and fasteners are detachably arranged in the first fixing hole and the second fixing hole;
and a plurality of connecting steel bars are reserved on the top plate and the side plates.
2. The split type prefabricated rail-roof air duct of claim 1, wherein the connecting steel bars comprise transverse steel bars and a plurality of vertical tie bars arranged on the top plate; the two ends of the transverse reinforcing steel bars extend out of the lateral plates and the outer sides of the inner fixing walls respectively, and the vertical reinforcing steel bars extend out of the top plate.
3. The split type prefabricated rail-roof air duct according to claim 1 or 2, wherein the connecting steel bars comprise vertical steel bars and a plurality of transverse tie bars arranged on the side plates; the two ends of the vertical reinforcing steel bars extend out of the outer sides of the top plate and the bottom plate respectively, and the transverse tie bars extend out of the outer sides of the side plates.
4. The split type precast rail roof duct of claim 3, wherein the first fixing hole and the second fixing hole are both threaded holes; the fastener is a bolt.
5. The split type precast rail roof duct according to any one of claims 1, 2 and 4, characterized in that the joint of the top plate and the side plate is provided with an inclined part, and the inclined part is precast and molded with the side plate and the top plate in an integrated manner;
the inclined part is also provided with the connecting steel bars in a reserved mode.
6. The split type prefabricated rail top air duct according to claim 5, wherein a through hole is reserved in the bottom plate.
7. The split type precast rail roof duct of claim 6, wherein a mounting stopper is arranged between one end of the bottom plate close to the side plate and the side plate.
8. The split type precast rail head duct according to claim 6 or 7, wherein outer surfaces of the top plate, the inclined portion and the side plate are provided as rough surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020209603.3U CN212177195U (en) | 2020-02-25 | 2020-02-25 | Split type prefabricated rail top air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020209603.3U CN212177195U (en) | 2020-02-25 | 2020-02-25 | Split type prefabricated rail top air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212177195U true CN212177195U (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020209603.3U Active CN212177195U (en) | 2020-02-25 | 2020-02-25 | Split type prefabricated rail top air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212177195U (en) |
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2020
- 2020-02-25 CN CN202020209603.3U patent/CN212177195U/en active Active
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