CN220015190U - Assembled rail top wind channel in push pipe tunnel - Google Patents
Assembled rail top wind channel in push pipe tunnel Download PDFInfo
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- CN220015190U CN220015190U CN202321539444.3U CN202321539444U CN220015190U CN 220015190 U CN220015190 U CN 220015190U CN 202321539444 U CN202321539444 U CN 202321539444U CN 220015190 U CN220015190 U CN 220015190U
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Abstract
The utility model provides an assembled rail roof air duct in a pipe-jacking tunnel, which belongs to the technical field of rail transit design and construction and comprises a plurality of independent unit areas longitudinally divided along the tunnel, wherein the span of each independent unit area is the width of a half ring to a ring of pipe pieces, the middle part of each independent unit area is provided with a prefabricated section steel beam which is L-shaped and comprises a transverse section steel beam and a longitudinal section steel beam, one end of the transverse section steel beam is fixedly connected with the pipe pieces, the other end of the transverse section steel beam is connected with the longitudinal section steel beams, the upper ends of the longitudinal section steel beams are fixedly connected with the pipe pieces, prefabricated side plates are fixed between every two adjacent longitudinal section steel beams, and a prefabricated bottom plate is fixed between every two adjacent transverse section steel beams. The utility model can be well adapted to the uneven settlement of tunnels.
Description
Technical Field
The utility model belongs to the technical field of rail transit design and construction, and particularly relates to an assembled rail roof air duct in a pipe-jacking tunnel.
Background
With the continuous development of urban rail transit design and construction technology, under the condition of extremely complex ground and surrounding environment conditions, a platform area and a track area of an urban rail transit underground station can pass through a pipe-jacking tunnel to penetrate through an important municipal building (structure) and then complete seamless communication of large mileage ends. Because the pipe-jacking tunnel is connected along the longitudinal direction of the tunnel mainly through bolts, is of a relatively flexible structure, and is relatively weak in theoretical integrity compared with a reinforced concrete frame structure, the pipe-jacking tunnel in the station range can possibly generate a certain amount of uneven settlement and other problems after urban rail transit construction is completed and during later operation and maintenance, and therefore, a rail-jacking air duct in the station platform area pipe-jacking tunnel range needs to be specially designed to adapt to the uneven settlement problem possibly generated by the tunnel.
The problems existing in the construction process of the inner rail top air channel of the pipe-jacking tunnel are mainly as follows: (1) The cast-in-situ reinforced concrete rail roof air duct has the advantages that the working procedure is complex, the construction period is long, the formwork is required to be supported and disassembled during casting, the formwork is required to be lifted in batches and manually carried after being disassembled, the casting quality is difficult to guarantee due to the influence of space and gravity on the junction position of the side wall of the rail air duct and the top of the tunnel, the construction process relates to high-altitude operation, and the construction danger is high. (2) The semi-prefabricated rail roof air duct is a square air duct which is generally composed of a top plate of a subway station, left and right concrete bracket lower hanging beams and a prefabricated rail roof air duct bottom plate, the size of the type of rail air duct bottom plate is larger, the operation and installation difficulties are large, and the construction period is longer. (3) The cast-in-situ rail roof air duct and the semi-prefabricated rail roof air duct have another problem that a certain amount of uneven settlement can be generated in the tunnel structure after the tunnel construction is completed and during the later operation and maintenance, and if the structural rigidity of the rail roof air duct in the area range is large in comparison with that of the tunnel, the cast-in-situ and semi-prefabricated rail roof air duct can generate structural damage such as cracks under the effect of tunnel deformation.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model provides an assembled rail roof air duct in a pipe-jacking tunnel, which can better adapt to the uneven settlement of the tunnel.
The technical scheme adopted by the utility model is as follows: the utility model provides an assembled rail roof wind channel in push pipe tunnel, includes a plurality of independent unit areas of following the longitudinal partition of tunnel, the span in independent unit area is the width of semi ring ~ one ring section of jurisdiction, the middle part in independent unit area is provided with a prefabricated shaped steel roof beam, prefabricated shaped steel roof beam is L shape, including horizontal shaped steel roof beam and vertical shaped steel roof beam, the one end and the section of jurisdiction fixed connection of horizontal shaped steel roof beam, the other end is connected with vertical shaped steel roof beam, the upper end and the section of jurisdiction fixed connection of vertical shaped steel roof beam, adjacent be fixed with prefabricated curb plate between the vertical shaped steel roof beam, adjacent be fixed with prefabricated bottom plate between the horizontal shaped steel roof beam.
Further, the duct piece is provided with an embedded sleeve, holes are formed in the upper end of the longitudinal section steel beam and one end of the transverse section steel beam, and the duct piece is fixedly connected with the embedded sleeve through fastening bolts.
Further, the other end of the transverse section steel beam is fixedly connected with the lower part of the longitudinal section steel beam through bolts.
Further, the both sides of horizontal shaped steel roof beam, vertical shaped steel roof beam all are provided with the mounting, all be provided with the pre-buried crab-bolt on prefabricated curb plate and the prefabricated bottom plate, the pre-buried crab-bolt with the mounting is connected.
Further, two ends of each prefabricated side plate are fixedly connected with one longitudinal steel beam respectively, and two ends of each prefabricated bottom plate are fixedly connected with one transverse steel beam respectively.
Further, the transverse section steel beam and the longitudinal section steel beam are respectively provided with a limiting piece, and the limiting pieces are used for separating two adjacent prefabricated side plates or two adjacent prefabricated bottom plates.
Further, the transverse section steel beams are horizontally placed, and the longitudinal section steel beams are vertically placed.
Further, the prefabricated side plates and the prefabricated bottom plates are RPC (Reactive Powder Concrete ) plates.
Further, rail top air holes are formed in part of the prefabricated bottom plates.
Further, the lower end of the longitudinal steel beam is fixedly connected with the channel steel.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model is longitudinally divided into a plurality of independent unit areas along the tunnel, each independent unit area is a rigid stress unit, so that the prefabricated side plates and the prefabricated bottom plates are positioned at the joint of the duct pieces, the prefabricated side plates, the prefabricated bottom plates and the prefabricated section steel beams are connected through the embedded anchor bolts, and the structure is also of a relatively flexible structure, is adaptive to the bolt connection structure of the pipe jacking tunnel along the longitudinal direction of the tunnel, and can better adapt to the influence of uneven settlement deformation possibly existing in the pipe jacking tunnel.
2. The main components of the utility model are prefabricated components, which can be assembled on site to realize rapid construction. The prefabricated bottom plate is divided into two types, rail top air holes are partially formed, the prefabricated bottom plate is selectively installed according to actual design conditions, and the prefabricated bottom plate has good applicability to different rail top air channel opening schemes; the longitudinal steel girder has good applicability for whether a shielding door is arranged or not.
3. The RPC board adopted by the utility model has excellent fireproof performance, surface patterns and designs can be customized during prefabrication, and fireproof and decoration effects are good.
4. The limiting piece is arranged, so that adverse conditions such as collision damage and the like during installation of adjacent RPC boards can be avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic plan view of an embodiment of the present utility model;
FIG. 3 is a schematic view of the installation of a prefabricated base plate according to an embodiment of the present utility model;
FIG. 4 is a schematic view of the installation of prefabricated side panels according to an embodiment of the present utility model;
FIG. 5 is a schematic cross-sectional view of a prefabricated base plate according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a connection between a transverse section steel beam and an embedded sleeve according to an embodiment of the present utility model;
FIG. 7 is a schematic diagram of a connection between a longitudinal steel beam and an embedded sleeve according to an embodiment of the present utility model;
FIG. 8 is a schematic view of the connection of a transverse section steel beam to a longitudinal section steel beam according to an embodiment of the present utility model;
fig. 9 is a schematic diagram of connection between a longitudinal steel girder and a channel steel according to an embodiment of the present utility model;
fig. 10 is an installation schematic of a channel steel according to an embodiment of the present utility model.
In the figure: the steel plate comprises a transverse section steel beam 1, a longitudinal section steel beam 2, a limiting piece 3, a fixing piece 4, a prefabricated side plate 5, a prefabricated bottom plate 6, a pre-embedded anchor bolt 7, a rail top wind hole 8, a channel steel 9, a pre-embedded sleeve 10 and a duct piece 11.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and the specific embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.
The embodiment of the utility model provides an assembled rail-roof air duct in a pipe-jacking tunnel, which comprises a plurality of independent unit areas which are sequentially divided along the longitudinal direction of the tunnel, wherein the span of each independent unit area is the width of a semi-ring segment 11 to a ring segment 11, and each independent unit area is a rigid stress unit. And a prefabricated section steel beam is arranged in the middle of the independent unit area. The span of the independent unit area is matched with the comprehensive consideration of multiple factors such as load, stress requirement, use function, component size, prefabrication capability, convenience in transportation and construction and the like. The span of the individual cell areas in this embodiment is the width of the half segment 11.
The prefabricated section steel beam is L-shaped and comprises a transverse section steel beam 1 and a longitudinal section steel beam 2. The transverse section steel beams 1 are horizontally placed, and the longitudinal section steel beams 2 are vertically placed. The upper part and the side part of the duct piece 11 are respectively provided with an embedded sleeve 10. One end of the transverse steel beam 1 is provided with a hole and is fixedly connected with the embedded sleeve 10 at the side part of the duct piece 11 through a fastening bolt. The other end of the transverse section steel beam 1 is fixedly connected with the lower part of the longitudinal section steel beam 2 through bolts. The upper end of the longitudinal steel beam 2 is provided with a hole and is fixedly connected with an embedded sleeve 10 at the upper part of the duct piece 11 through a fastening bolt.
Prefabricated side plates 5 are fixed between the adjacent longitudinal section steel beams 2, and two ends of each prefabricated side plate 5 are fixedly connected with one longitudinal section steel beam 2 respectively. A prefabricated bottom plate 6 is fixed between the adjacent transverse section steel beams 1, and two ends of each prefabricated bottom plate 6 are fixedly connected with one transverse section steel beam 1 respectively. Specifically, the both sides of horizontal shaped steel roof beam 1, vertical shaped steel roof beam 2 all are provided with mounting 4, all be provided with embedded anchor 7 on prefabricated curb plate 5 and the prefabricated bottom plate 6, embedded anchor 7 with mounting 4 is connected.
The two prefabricated side plates 5 are arranged on the transverse section steel beam 1 and the longitudinal section steel beam 2, the two prefabricated side plates 5 are adjacent to each other and are separated from each other by the limiting piece 3, and the two prefabricated bottom plates 6 are adjacent to each other and are separated from each other by the limiting piece 3 and are arranged on the transverse section steel beam 1.
The prefabricated side plates 5 and the prefabricated bottom plates 6 are RPC plates. The prefabricated base plates 6 are divided into two types, wherein one type is a standard plate, and rail top air holes 8 are not formed; one type is a non-standard plate, and a rail top air hole 8 is arranged and is used as a heat exhaust air port. And selecting and installing according to the actual design condition.
The lower end of the longitudinal steel beam 2 at the design position of the shielding door is fixedly connected with a channel steel 9, and the channel steel 9 is used for being connected with a shielding door connecting piece.
When the vertical type vertical steel girder installation method is used for installing the horizontal type vertical steel girder installation method, the horizontal type vertical steel girder installation method sequentially installs the horizontal type vertical steel girder 1 and the vertical type vertical steel girder 2 along the track direction, and elevation is calibrated after installation, so that the top surfaces of all the horizontal type vertical steel girders 1 are kept on the same horizontal plane, and all the vertical type vertical steel girders 2 are kept on the same vertical plane. Then installing the prefabricated side plates 5 and the prefabricated bottom plates 6 in a block-by-block mode in sequence; each set of prefabricated side panels 5 and prefabricated bottom panels 6 is installed in such a way that the side panels 5 are prefabricated first and then the bottom panels 6 are prefabricated. And finally, installing the channel steel 9, and connecting the channel steel 9 with the shielding door connecting piece through a slotted hole.
The present utility model has been described in detail by way of examples, but the description is merely exemplary of the utility model and should not be construed as limiting the scope of the utility model. The scope of the utility model is defined by the claims. In the technical scheme of the utility model, or under the inspired by the technical scheme of the utility model, similar technical schemes are designed to achieve the technical effects, or equivalent changes and improvements to the application scope are still included in the protection scope of the patent coverage of the utility model.
Claims (10)
1. An assembled rail roof wind channel in push pipe tunnel, its characterized in that: including a plurality of independent unit areas of following the longitudinal partition of tunnel, the span in independent unit area is the width of semi-ring ~ one ring section of jurisdiction, the middle part in independent unit area is provided with a prefabricated shaped steel roof beam, prefabricated shaped steel roof beam is L shape, including horizontal shaped steel roof beam and vertical shaped steel roof beam, the one end and the section of jurisdiction fixed connection of horizontal shaped steel roof beam, the other end is connected with vertical shaped steel roof beam, the upper end and the section of jurisdiction fixed connection of vertical shaped steel roof beam, adjacent be fixed with prefabricated curb plate between the vertical shaped steel roof beam, adjacent be fixed with prefabricated bottom plate between the horizontal shaped steel roof beam.
2. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: the duct piece is provided with an embedded sleeve, holes are formed in the upper end of the longitudinal section steel beam and one end of the transverse section steel beam, and the duct piece is fixedly connected with the embedded sleeve through fastening bolts.
3. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: the other end of the transverse section steel beam is fixedly connected with the lower part of the longitudinal section steel beam through bolts.
4. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: the fixing pieces are arranged on two sides of the transverse section steel beam and two sides of the longitudinal section steel beam, and embedded anchor bolts are arranged on the prefabricated side plates and the prefabricated bottom plate and connected with the fixing pieces.
5. The pipe-jacking in-tunnel fabricated rail tunnel of claim 1 or 4, wherein: the two ends of each prefabricated side plate are fixedly connected with one longitudinal section steel beam respectively, and the two ends of each prefabricated bottom plate are fixedly connected with one transverse section steel beam respectively.
6. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: and the transverse section steel beams and the longitudinal section steel beams are respectively provided with a limiting part, and the limiting parts are used for separating two adjacent prefabricated side plates or two adjacent prefabricated bottom plates.
7. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: the transverse section steel beams are horizontally placed, and the longitudinal section steel beams are vertically placed.
8. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: and the prefabricated side plates and the prefabricated bottom plates are RPC plates.
9. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: and part of the prefabricated bottom plates are provided with rail top air holes.
10. The pipe-jacking in-tunnel fabricated rail roof air duct of claim 1, wherein: the lower end of the longitudinal section steel beam is fixedly connected with the channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539444.3U CN220015190U (en) | 2023-06-16 | 2023-06-16 | Assembled rail top wind channel in push pipe tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539444.3U CN220015190U (en) | 2023-06-16 | 2023-06-16 | Assembled rail top wind channel in push pipe tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220015190U true CN220015190U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321539444.3U Active CN220015190U (en) | 2023-06-16 | 2023-06-16 | Assembled rail top wind channel in push pipe tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677415A (en) * | 2023-06-16 | 2023-09-01 | 中铁第六勘察设计院集团有限公司 | Construction method of prefabricated rail top air duct in pipe jacking tunnel |
-
2023
- 2023-06-16 CN CN202321539444.3U patent/CN220015190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677415A (en) * | 2023-06-16 | 2023-09-01 | 中铁第六勘察设计院集团有限公司 | Construction method of prefabricated rail top air duct in pipe jacking tunnel |
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