CN216788479U - Protective door device for tunnel portal - Google Patents
Protective door device for tunnel portal Download PDFInfo
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- CN216788479U CN216788479U CN202122463327.0U CN202122463327U CN216788479U CN 216788479 U CN216788479 U CN 216788479U CN 202122463327 U CN202122463327 U CN 202122463327U CN 216788479 U CN216788479 U CN 216788479U
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- tunnel portal
- arch
- panel
- protective door
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Abstract
The utility model discloses a protective door device for a tunnel portal, which is characterized by comprising an arch frame, a panel connected with the arch frame and a frame structure positioned between the arch frame and the panel, wherein the arch frame is annularly arranged along the tunnel portal, the frame structure comprises a frame main beam longitudinally arranged along the tunnel portal and a frame secondary beam transversely arranged along the tunnel portal, the frame main beam is connected with the frame secondary beam, and the arch frame is connected with the frame main beam. The protective door device of the utility model is installed at the built tunnel opening in advance, thereby effectively preventing the phenomena of water inrush and soil entering the tunnel and the like when dangerous situations occur, and having the functions of water isolation and soil retaining.
Description
Technical Field
The utility model relates to the technical field of engineering, in particular to a protective door device for a tunnel portal.
Background
Along with the high-speed development of cities, subways are used as novel vehicles and play an increasingly important role in reducing urban traffic pressure. At present, the most common construction methods in subway engineering generally include open excavation, shallow excavation and shield tunneling. The shield method is widely used because of its advantages of high average tunneling speed, safe construction, easy control of settlement, good quality of the formed tunnel structure, etc.
When the tunnel working well is close to a river channel, or an underground river, or a stratum where the working well is located is a geological condition with rich water content and high permeability coefficient, or is subjected to a geological condition with high confined water burst risk, the quality of the reinforcement treatment of the foundation soil of the receiving section of the shield tunneling machine is difficult to ensure.
When the shield tunneling machine receives the soil from the working well, the shield tunneling machine needs to start a jack to push the machine body to move forward, and meanwhile, a cutter disc at the front end of the shield tunneling machine rotates to cut the reinforced soil. If the reinforcing quality of the foundation soil of the receiving section is not ideal, the original unstable reinforced soil body is possibly damaged under the action of an external force of pushing and tunneling by the shield machine, so that a seepage channel from an original soil body (unreinforced soil body) to the working well direction is generated, the underground water and soil are greatly gushed into the working well, and if emergency measures are not timely, the underground water and soil are gushed into the constructed tunnel structure and are damaged.
Therefore, how to deal with the occurrence of dangerous situations in advance in the construction process is particularly important, and is an important subject in front of the technicians in the field.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides the protective door device for the tunnel portal, which has the advantages of simple structure and reasonable design, effectively prevents the phenomena of water inrush, soil entering a tunnel and the like when dangerous situations occur by mounting the protective door device on the built tunnel portal in advance, and has the functions of water isolation and soil blocking.
In order to achieve the purpose, the utility model provides a protective door device for a tunnel portal, which comprises an arch frame, a panel connected with the arch frame and a frame structure positioned between the arch frame and the panel, wherein the arch frame is annularly arranged along the tunnel portal, the frame structure comprises a frame main beam longitudinally arranged along the tunnel portal and a frame secondary beam transversely arranged along the tunnel portal, the frame main beam is connected with the frame secondary beam, and the arch frame is connected with the frame main beam.
Furthermore, mounting holes are uniformly formed in the periphery of the arch center and correspond to connecting holes formed in the tunnel portal concrete structure, and bolts used for being inserted into the connecting holes to connect and fix the arch center and the tunnel portal concrete structure penetrate through the mounting holes.
Furthermore, a rubber pad is arranged between the arch frame and the concrete structure of the tunnel portal.
Further, the diameter of the arch is larger than that of the inner wall of the tunnel portal, and further, the diameter of the arch is 8-12cm larger than that of the inner wall of the tunnel portal, and is preferably 10 cm.
Further, the frame main beams are longitudinally and uniformly arranged along the tunnel portal at equal intervals, and the frame secondary beams are transversely and uniformly arranged along the tunnel portal at equal intervals.
Further, the frame main beam is an I-shaped steel frame main beam, the I-shaped steel frame main beam is of an I-shaped frame structure, the frame secondary beam is a channel steel frame secondary beam, and the channel steel frame secondary beam is of a U-shaped frame structure.
Further, the arch center is an I-shaped steel frame arch center, and the panel is a steel panel.
Further, the arch frame is connected with the panel through welding, the frame main beam is connected with the frame secondary beam through welding, and the arch frame is connected with the frame main beam through welding.
Further, the edge of the frame main beam is flush with the edge of the panel, and the edge of the frame secondary beam is flush with the edge of the panel.
Furthermore, a panel hand convenient to operate is arranged on the panel.
Through the technical scheme provided by the utility model, the utility model at least has the following technical effects:
according to the protective door device for the tunnel portal, the protective door device is installed at the built tunnel portal in advance, so that an independent closed space is formed at the tunnel portal, the phenomena of water inrush and soil entering a tunnel and the like when dangerous situations occur are effectively prevented, and the protective door device has the functions of water isolation and soil blocking. The frame structure comprises the main beam frame and the secondary beam frame, and the stress and deformation of the whole protective door device can be reduced by arranging the frame structure with the two layers of structures, so that the safety is greatly improved.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
FIG. 1 is an elevational view of a protective door apparatus for a tunnel portal in accordance with the present invention;
FIG. 2 is a partial enlarged view of area A of FIG. 1;
FIG. 3 is a partial enlarged view of the area B of FIG. 1;
FIG. 4 is a plan view of a protective door apparatus for a tunnel portal in accordance with the present invention;
FIG. 5 is a partial enlarged view of area C of FIG. 4;
fig. 6 is a sectional view of a tunnel portal gate protection device according to the present invention.
Reference numerals: 1, an arch frame; 2, a panel; 3, a frame structure; 31 a frame main beam; 32 frame secondary beams; 4, bolts; 5 rubber pad
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the utility model, are given by way of illustration and explanation only, not limitation.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, fig. 1 is an elevational view of a protective door device for a tunnel portal according to the present invention, fig. 2 is a partially enlarged view of a region a of fig. 1, and fig. 3 is a partially enlarged view of a region B of fig. 1. The utility model provides a protective door device for a tunnel portal, which comprises an arch frame 1, a panel 2 connected with the arch frame 1 and a frame structure 3 positioned between the arch frame 1 and the panel 2, wherein the arch frame 1 is annularly arranged along the tunnel portal, the diameter of the arch frame 1 is greater than that of the inner wall of the tunnel portal, in one embodiment, the arch frame 1 can be an I-shaped steel frame arch frame, and the diameter of the arch frame 1 is greater than that of the inner wall of the tunnel portal by 10 cm. The panel 2 can adopt the steel panel, and the shape of panel 2 and bow member 1 phase-match, bow member 1 can be connected through the welding with panel 2, and under the state that bow member 1 is connected with panel 2, panel 2 encloses into an independent enclosure space with the tunnel portal, even take place dangerous situation, also will control in the finite scope, has created good opening for the emergency rescue in later stage.
Evenly be equipped with the mounting hole all around bow member 1, the mounting hole is corresponding with the connecting hole of setting on tunnel portal concrete structure, the mounting hole is worn to be equipped with and is used for inserting and establishes in the connecting hole connecting bow member 1 and tunnel portal concrete structure fixed bolt 4, through twist bolt 4 toward in mounting hole and the connecting hole, and all bolt 4 are all screwed up, not only can fix bow member 1 on tunnel portal concrete structure, can prevent simultaneously that bow member 1 from taking place to warp, make whole bow member 1 have very firm structure. The bolts 4 may be expansion bolts, and the number may be 16.
A rubber pad 5 is arranged between the arch frame 1 and the tunnel portal concrete structure, and the rubber pad 5 can prevent the situation of water leakage caused by the fact that the arch frame 1 is not closely connected with the tunnel portal concrete structure. The gauge of the rubber mat 5 may be 10mm 150 mm.
As shown in fig. 4 to 6, fig. 4 is a plan view of a tunnel portal gate protection device according to the present invention, fig. 5 is a partially enlarged view of a region C of fig. 4, and fig. 6 is a cross-sectional view of the tunnel portal gate protection device according to the present invention. The frame structure 3 comprises a frame main beam 31 longitudinally arranged along the tunnel portal and a frame secondary beam 32 transversely arranged along the tunnel portal, the frame main beam 31 is connected with the frame secondary beam 32, and the arch frame 1 is connected with the frame main beam 31. In one embodiment, the frame main beam 31 and the frame secondary beam 32 are connected by welding, the arch 1 and the frame main beam 31 are connected by welding, and the frame secondary beam 32 is located at the side close to the panel 2. Through the frame construction 3 that sets up two-layer structure (being frame main beam 31 and frame secondary beam 32), can reduce the holistic atress of protective door device and warp, improved the security greatly.
The frame main beam 31 is an I-shaped steel frame main beam, the frame main beam 31 is in an I-shaped frame structure, the frame secondary beam 32 is a steel channel frame secondary beam, and the frame secondary beam 32 is in a U-shaped frame structure.
In one embodiment, the arch 1 has a specification I22a-D of 5890mm and the panel 2 has a specification t of 10mm (6 m diameter). The panels 2 have a size larger than the size of the arch 1 so that the panels 2, after the panels 2 are connected to the arch 1, enclose the tunnel in a separate closed space. The number of the frame main beams 31 can be 5, and the specification and model of the 5 frame main beams 31 in the embodiment are respectively 1 piece of 2I22a-6m, 2 pieces of 2I22a-5.65m and 2 pieces of I22a-4.56 m. Wherein 5 frame girders 31 are evenly arranged along the tunnel portal at equal intervals in the longitudinal direction, and the intervals between the 5 frame girders 31 are all 1 m.
The frame main beams 31 with the specification model of 2I22a-6m are located in the middle of the longitudinal direction of the tunnel portal, the frame main beams 31 with the specification model of 2I22a-5.65m are located on two sides of the frame main beams 31 with the specification model of 2I22a-6m, and the frame main beams with the specification model of I22a-4.56m are located on one side of the frame main beams 31 with the specification model of 2I22a-5.65 m. The specification and model of the frame main beams 31 of the tunnel portal from left to right are respectively I22a-4.56m, 2I22a-5.65m, 2I22a-6m, 2I22a-5.65m and I22a-4.56m, i.e. the edges of the frame main beams 31 are flush with the edges of the panel 2, which is not limited herein.
The number of the frame secondary beams 32 may be 11, and the specification and model of the 11 frame secondary beams 32 in this embodiment are 1 number 12 channel steel with a length of 6m, 2 number 12 channel steel with a length of 5.9m, 2 number 12 channel steel with a length of 5.6m, 2 number 12 channel steel with a length of 5.2m, 2 number 12 channel steel with a length of 4.5m, and 2 number 12 channel steel with a length of 3.4m, respectively. Wherein 11 frame secondary beams 32 are transversely and uniformly arranged along the tunnel portal at equal intervals, and the intervals among the 11 frame secondary beams 32 are all 0.5 m.
The frame secondary beam 32 of the No. 12 channel steel with the length of 6m is positioned in the middle of the tunnel portal in the transverse direction, the frame secondary beam 32 of the No. 12 channel steel with the length of 5.9m is respectively positioned on two sides of the frame secondary beam 32 of the No. 12 channel steel with the length of 6m, the frame secondary beam 32 of the No. 12 channel steel with the length of 5.6m is positioned on one side of the frame secondary beam 32 of the No. 12 channel steel with the length of 5.9m, the frame secondary beam 32 of the No. 12 channel steel with the length of 5.2m is positioned on one side of the frame secondary beam 32 of the No. 12 channel steel with the length of 5.2m, the frame secondary beam 32 of the No. 12 channel steel with the length of 4.5m is positioned on one side of the frame secondary beam 32 of the No. 12 channel steel with the length of 4.5m, and the frame secondary beam 32 of the No. 12 channel steel with the length of 3.4m is positioned on one side of the frame secondary beam 32 of the No. 12 channel steel with the length of 5 m. The specifications and types of the tunnel portal 32 from top to bottom are respectively 12 channel steel with the length of 3.4m, 12 channel steel with the length of 4.5m, 12 channel steel with the length of 5.2m, 12 channel steel with the length of 5.6m, 12 channel steel with the length of 5.9m, 12 channel steel with the length of 6m, 12 channel steel with the length of 5.9m, 12 channel steel with the length of 5.6m, 12 channel steel with the length of 5.2m, 12 channel steel with the length of 4.5m and 12 channel steel with the length of 3.4m, even if the edge of the frame secondary beam 32 is flush with the edge of the panel 2, the specification and the type are not limited. In other embodiments, the specification and model of the arch 1, the panels 2, the frame main beams 31 and the frame secondary beams 32, and the number of the frame main beams 31 and the frame secondary beams 32 may also be selected according to the size of the tunnel portal, and are not limited herein.
In one embodiment, a panel hand (not shown) is provided on the panel 2 for easy operation.
The protective door device provided by the utility model is installed at the built tunnel portal in advance, so that the tunnel portal forms an independent closed space, the phenomena of water inrush and soil entering the tunnel and the like when dangerous situations occur are effectively prevented, and the protective door device has the functions of water isolation and soil retaining. Meanwhile, the main beam frame and the secondary beam frame are combined in the frame structure, and the frame structure with the two layers of structures can reduce the overall stress and deformation of the protective door device, so that the safety is greatly improved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The utility model provides a protective door device for tunnel portal, its characterized in that, including the bow member, with the panel that the bow member is connected and be located the bow member with frame construction between the panel, the bow member sets up along tunnel portal hoop, frame construction includes the edge the vertical frame girder that sets up of tunnel portal with follow the horizontal frame secondary beam that sets up of tunnel portal, the frame girder with the frame secondary beam is connected, the bow member with the frame girder is connected.
2. The protective door device according to claim 1, wherein the arch is uniformly provided with mounting holes around the arch, the mounting holes correspond to the connecting holes provided on the tunnel portal concrete structure, and the mounting holes are penetrated with bolts for inserting into the connecting holes to connect and fix the arch and the tunnel portal concrete structure.
3. The protective door apparatus according to claim 2, wherein a rubber gasket is provided between the arch and the concrete structure of the tunnel portal.
4. The protective door apparatus according to claim 1, wherein the arch has a diameter larger than a diameter of an inner wall of the tunnel portal.
5. The protective door apparatus of claim 1, wherein said frame major beams are uniformly longitudinally spaced along said tunnel portal and said frame minor beams are uniformly transversely spaced along said tunnel portal.
6. The protective door apparatus according to claim 5, wherein the frame main beams are i-steel frame main beams, the i-steel frame main beams are in a i-shaped frame structure, the frame sub-beams are channel frame sub-beams, and the channel frame sub-beams are in a U-shaped frame structure.
7. The protective door apparatus of claim 1, wherein the arch is an i-steel frame arch and the panel is a steel panel.
8. The protective door apparatus of claim 1, wherein the arch is connected to the panel by welding, the primary frame beam is connected to the secondary frame beam by welding, and the arch is connected to the primary frame beam by welding.
9. The protective door unit of claim 8, wherein edges of the frame primary beams are flush with edges of the panel and edges of the frame secondary beams are flush with edges of the panel.
10. A shutter arrangement according to claim 1, wherein a panel hand is provided on the panel for ease of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122463327.0U CN216788479U (en) | 2021-10-14 | 2021-10-14 | Protective door device for tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122463327.0U CN216788479U (en) | 2021-10-14 | 2021-10-14 | Protective door device for tunnel portal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216788479U true CN216788479U (en) | 2022-06-21 |
Family
ID=81999334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122463327.0U Active CN216788479U (en) | 2021-10-14 | 2021-10-14 | Protective door device for tunnel portal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216788479U (en) |
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2021
- 2021-10-14 CN CN202122463327.0U patent/CN216788479U/en active Active
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