CN216381406U - Groove structure for high-speed magnetic levitation railway tunnel - Google Patents
Groove structure for high-speed magnetic levitation railway tunnel Download PDFInfo
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- CN216381406U CN216381406U CN202122379778.6U CN202122379778U CN216381406U CN 216381406 U CN216381406 U CN 216381406U CN 202122379778 U CN202122379778 U CN 202122379778U CN 216381406 U CN216381406 U CN 216381406U
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- cover plate
- magnetic levitation
- railway tunnel
- speed magnetic
- levitation railway
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Abstract
The utility model belongs to the technical field of tunnel engineering, and particularly relates to a groove structure for a high-speed magnetic levitation railway tunnel, which comprises a groove body and a cover plate, wherein the groove body is provided with a groove opening; the groove body comprises an installation section for installing the cover plate and an accommodating section positioned below the installation section, the opening width of the installation section is larger than that of the accommodating section, and the installation section and the accommodating section form a step structure; the top of the inner side surface of one side of the mounting section is provided with a limiting part which extends inwards in a protruding manner, and a tongue-and-groove is formed between the limiting part and the step surface of the step structure; the bottom of one side of the cover plate is provided with a tenon which protrudes and extends outwards; the two sides of the cover plate are respectively arranged on the step surfaces on the two sides of the groove body, and the tenon is inserted into the mortise. When the high-speed maglev railway tunnel train passes through or the double-track tunnel train meets, the groove cover plate does not jump obviously, water in the groove cannot splash out, and the operation risk in the tunnel can be effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of tunnel engineering, and particularly relates to a groove structure for a high-speed magnetic levitation railway tunnel.
Background
At present, only a magnetic levitation test line in sorb county, Japan, has tunnel engineering which is built and put into test in the world, and the speed of 603 km/h is reached in the tunnel. The aerodynamic effect of the tunnel of the high-speed magnetic-levitation railway is very obvious, the dynamic action of the train and the ambient air is obviously intensified along with the improvement of the running speed of the train, on one hand, the aerodynamic effect has an effect on the train and the running of the train, and on the other hand, the aerodynamic effect caused by the high-speed running of the train has an effect on the ambient environment.
When the pressure in the tunnel changes, the cover plate of the ditch or the cable trough is correspondingly impacted. When the top of the cover plate is in positive pressure (such as compression waves or the passing of a train head), the cover plate is pressed downwards, and the cover plate is stable; when the top of the cover plate is under negative pressure (such as expansion waves or train tail passing), the cover plate is acted upwards. When the acting force generated by the negative pressure at the top is smaller than the dead weight of the cover plate, the cover plate is also in a stable state; when the acting force generated by the negative pressure at the top is larger than the dead weight of the cover plate, the cover plate can jump upwards, and the service life of the cover plate is influenced; the cover plate may fly out of the ditch, which affects the safety of the auxiliary facilities in the traveling crane and the tunnel. The pressure difference between the upper surface and the lower surface of the cover plate is not only related to factors such as train speed, blockage ratio and the like, but also related to the tightness of a ditch. When the ditch is not sealed completely, namely the quality exchange of the air inside and outside the ditch is completely undamped, the top pressure of the cover plate is equal to the bottom pressure of the cover plate. When the ditch is completely sealed, namely air outside the ditch has no mass exchange and the rigidity of the cover plate is higher, pressure transient at the top of the cover plate has no influence on the interior of the ditch. In addition, at present, the trench cover plate in the high-speed railway tunnel is directly laid on the upper part of the trench body, the opening area of the cover plate is small, and the use requirement in the high-speed magnetic levitation railway tunnel cannot be met, so that the trench structure in the high-speed magnetic levitation railway tunnel needs to be redesigned.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the groove structure for the high-speed maglev railway tunnel, when a high-speed maglev railway tunnel train passes through or a double-track tunnel train meets, the groove cover plate cannot jump obviously, water cannot be splashed to the outside in the groove, the operation risk in the tunnel can be reduced, and the service life of the cover plate is prolonged.
In order to achieve the purpose, the technical scheme of the utility model is a groove structure for a high-speed magnetic levitation railway tunnel, which comprises a groove body and a cover plate; the groove body comprises an installation section for installing the cover plate and an accommodating section positioned below the installation section, the opening width of the installation section is larger than that of the accommodating section, and the installation section and the accommodating section form a step structure; the bottom of the inner side surface of one side of the mounting section is inwards recessed to form a mortise, and the bottom of one side of the cover plate is outwards protruded and extended to form a tenon; the two sides of the cover plate are respectively arranged on the step surfaces of the step structures on the two sides of the groove body, and the tenon is inserted into the mortise.
Furthermore, the cover plate is provided with a plurality of openings penetrating through the cover plate.
Further, the ratio of the area of the opening of the cover plate to the area of the cover plate is not less than 0.4%.
Furthermore, the opening is in a strip shape and extends along the width direction of the cover plate; the plurality of openings are arranged at intervals along the length direction of the cover plate.
Further, the width of the open pores is not more than 3cm, and the clear distance between the open pores is not less than 3 cm.
Further, the width of the opening of the accommodating section is L, and the width of the top of the cover plate is a1And L is less than a1。
Further, the opening width of the mounting section is a2The width between the side face of the bottom of the cover plate and the tenon on the opposite side is b1And a is a2Greater than b1。
Furthermore, on the opposite side of the mortise, the distance between the inner side surface of the accommodating section and the inner side surface of the mounting section is c1(ii) a And b is1-a1< c1 <b1-L。
Further, the width of the tenon does not exceed 5 cm.
Furthermore, the groove body is cast by adopting reinforced concrete, and the cover plate is cast by adopting concrete with the strength grade not lower than C40.
Compared with the prior art, the utility model has the following beneficial effects:
(1) compared with the existing trench structure in the high-speed railway tunnel, the cover plate with the tenon-shaped section in the trench structure is fixed by inserting the cover plate into the mortise at the top of the trench body, so that the cover plate can be prevented from jumping due to air pressure difference caused by high-speed running of a train in the high-speed magnetic suspension tunnel, the operation risk in the tunnel is reduced, and the service life of the cover plate is prolonged;
(2) according to the groove structure for the shield tunnel of the high-speed magnetic levitation railway, the plane of the cover plate is provided with the holes, so that the pressure difference between the upper air pressure and the lower air pressure and the weight of the cover plate when a high-speed train passes through the groove structure are reduced while the structural strength of the cover plate is ensured, and the water splashing phenomenon in the groove is reduced by controlling the width and the distance of the holes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a trench structure for a high-speed magnetic levitation railway tunnel according to an embodiment of the present invention;
fig. 2 is a schematic plan view of a cover plate of a trench structure for a high-speed magnetic levitation railway tunnel according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a high-speed magnetic levitation railway tunnel according to an embodiment of the present invention;
in the figure: 1. a cover plate; 11. a tenon; 2. a tank body; 21. an installation section; 22. an accommodating section; 23. mortises; 24. a step surface; 3. opening a hole; 4. filling an inverted arch; 5. a segment lining ring; 6. a low-voltage cable trough; 7. a drainage ditch; 8. a high-voltage cable trough; 9. a looped network cable trough; 10. communication signal cable trough.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1-2, the present embodiment provides a trench structure for a high-speed magnetic levitation railway tunnel, which includes a trench body 2 and a cover plate 1; the trough body 2 comprises an installation section 21 for installing the cover plate 1 and an accommodating section 22 which is positioned below the installation section 21 and used for central ditch or cable laying, the opening width of the installation section 21 is larger than that of the accommodating section 22, and the installation section 21 and the accommodating section 22 form a step structure; the bottom of the inner side surface of one side of the mounting section 21 is inwards recessed to form a mortise 23, and the bottom of one side of the cover plate 1 is outwards protruded and extended to form a tenon 11; the two sides of the cover plate 1 are respectively arranged on the step surfaces 24 of the step structures on the two sides of the groove body 2, and the tenon 11 is inserted into the mortise 23. This embodiment is equipped with tenon 11 in apron 1 one of them side, be equipped with at the top at cell body 2 with tenon 11 assorted tongue-and-groove 23, through when installing apron 1 on the step face 24 at cell body 2 top, insert the tongue-and-groove 23 on the cell body 2 with tenon 11 on the apron 1 to fixed apron 1, train high-speed operation arouses the atmospheric pressure difference to cause apron 1 to beat in avoiding high-speed maglev tunnel, reduce the operation risk in the tunnel, promote apron 1 life.
Furthermore, a plurality of openings 3 penetrating through the cover plate 1 are formed in the cover plate 1. As shown in figure 2, a plurality of holes 3 which penetrate through the cover plate 1 from top to bottom are arranged on the plane of the cover plate 1, so that the strength of the cover plate 1 is ensured, and the pressure difference between the top and the bottom and the weight of the cover plate 16 when a high-speed train passes are reduced.
Further, the ratio of the area of the opening 3 of the cover plate 1 to the area of the cover plate 1 is not less than 0.4%. The ratio of the area of all the openings 3 on the plane of the cover plate 1 in the embodiment to the area of the cover plate 1 is not less than 0.4%, so that the cover plate can keep a stable state and cannot easily jump up and down, and the use requirement in a tunnel of a high-speed magnetic suspension railway is met.
Further, the opening 3 is in a strip shape and extends along the width direction of the cover plate 1; a plurality of openings 3 are arranged at intervals along the length of the cover plate 1. Furthermore, the width of the openings 3 is not more than 3cm, and the clear distance between the openings 3 is not less than 3cm, so that the splashing phenomenon in the groove is reduced.
Further, the width of the opening of the receiving section 22 is L, and the width of the top of the cover plate 1 is a1And L is less than a1. Further, the mounting section 21 has an opening width a2The width between the side surface of the bottom of the cover plate 1 and the tenon 11 at the opposite side is b1And a is a2Greater than b1. Furthermore, on the opposite side of the mortise 23, the distance between the inner side of the accommodating section 22 and the inner side of the mounting section 21 is c1(ii) a And b is1-a1< c1 <b1-L. The size of apron 1 and groove body 2 satisfies above-mentioned relation in this embodiment to guarantee that apron 1 can guarantee to put into the installation section 21 on groove body 2 upper portion, and apron 1 both ends can not fall into in the section 22 that holds of groove body 2 lower part in the removal insertion groove body 2 upper portion in-process.
Further, the width of the tenon 11 is not more than 5cm, i.e. b1-a1≦ 5cm, otherwise the gap between the side of the cover plate 1 opposite to the tenon 11 and the inner side of the mounting section 21 of the channel 2 is too large.
Further, the groove body 2 is cast by using reinforced concrete, and the cover plate 1 is cast by using concrete with the strength grade not lower than C40. The installation section 21 and the accommodation section 22 of the trough body 2 of the present embodiment are both cast with reinforced concrete.
As shown in fig. 3, the utility model further provides a high-speed magnetic levitation railway tunnel, which comprises a segment lining ring 5, wherein an inverted arch filler 4 is arranged at the bottom inside the segment lining ring 5, and a low-voltage cable trough 6, a drainage ditch 7, a high-voltage cable trough 8, a looped network cable trough 9 and a communication signal cable trough 10 are arranged at the top of the inverted arch filler 4; at least one of the low-voltage cable groove 6, the drainage ditch 7, the high-voltage cable groove 8, the ring network cable groove 9 and the communication signal cable groove 10 adopts the groove structure.
The segment lining ring 5 of the embodiment is an annular structure formed by splicing a plurality of prefabricated segment blocks, the inverted arch filler 4 is a plain concrete filling layer, and the top surface of the inverted arch filler 4 is in a high-low step shape and comprises a high-step surface, a low-step surface and a step side surface for connecting the high-step surface and the low-step surface; wherein, the low-voltage cable groove 6 and the drainage ditch 7 are arranged on the low step surface, and the high-voltage cable groove 8, the looped network cable groove 9 and the communication signal cable groove 10 are arranged on the high step surface.
The high-speed maglev train is characterized in that a plurality of supports are arranged on the low step surface at intervals along the line direction, a track beam is supported on the supports, is of a hollow structure and is shaped like a letter pi and is used for mounting high-speed maglev train running equipment and bearing train load, the adaptability of the high-speed maglev train to poor stratum conditions is greatly improved, compared with the high-speed maglev train directly arranged on the top surface filled with an inverted arch, the running conditions of the high-speed maglev train are improved, the operation safety and the service life of the high-speed maglev train are improved, and the central line of the track beam can be superposed with the central line of a tunnel structure or keep a certain distance; wherein the support can be in a double-limb form and comprises a bottom plate, a first limb and a second limb; the first limb and the second limb are respectively connected with two sides of the bottom plate, the track beam is arranged on the bottom plate, a maintenance space is formed between the first limb and the second limb, and the height between the bottom plate and the low step surface meets the requirement of the maintenance space, so that the maintenance space below the support can be favorably accessed, and the maintenance and the repair of the high-speed magnetic levitation railway tunnel can be conveniently realized; the intervals of the supports along the line direction are determined according to train load, a bearing structure, curve radius and the like, and the intervals are about 12m generally; the high step surface is the bottom surface of the bottom rescue channel, so that the height difference of the rescue channel and passengers evacuated through the train door is reduced, and the rescue difficulty is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a slot structure for high-speed magnetic levitation railway tunnel which characterized in that: comprises a groove body and a cover plate; the groove body comprises an installation section for installing the cover plate and an accommodating section positioned below the installation section, the opening width of the installation section is larger than that of the accommodating section, and the installation section and the accommodating section form a step structure; the bottom of the inner side surface of one side of the mounting section is inwards recessed to form a mortise, and the bottom of one side of the cover plate is outwards protruded and extended to form a tenon; the two sides of the cover plate are respectively arranged on the step surfaces of the step structures on the two sides of the groove body, and the tenon is inserted into the mortise.
2. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 1, wherein: the cover plate is provided with a plurality of openings penetrating through the cover plate.
3. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 2, wherein: the ratio of the area of the opening of the cover plate to the area of the cover plate is not less than 0.4%.
4. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 2, wherein: the opening is in a strip shape and extends along the width direction of the cover plate; the plurality of openings are arranged at intervals along the length direction of the cover plate.
5. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 4, wherein: the width of the open pores is not more than 3cm, and the clear distance between the open pores is not less than 3 cm.
6. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 1, whereinIn the following steps: the width of the opening of the accommodating section is L, and the width of the top of the cover plate is a1And L is less than a1。
7. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 6, wherein: the opening width of the mounting section is a2The width between the side face of the bottom of the cover plate and the tenon on the opposite side is b1And a is a2Greater than b1。
8. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 7, wherein: the distance between the inner side surface of the accommodating section and the inner side surface of the mounting section at the opposite side of the mortise is c1(ii) a And b is1-a1< c1 <b1-L。
9. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 1, wherein: the width of the tenon does not exceed 5 cm.
10. A trench structure for a high speed magnetic levitation railway tunnel as claimed in claim 1, wherein: the groove body is cast by adopting reinforced concrete, and the cover plate is cast by adopting concrete with the strength grade not lower than C40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122379778.6U CN216381406U (en) | 2021-09-29 | 2021-09-29 | Groove structure for high-speed magnetic levitation railway tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122379778.6U CN216381406U (en) | 2021-09-29 | 2021-09-29 | Groove structure for high-speed magnetic levitation railway tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216381406U true CN216381406U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122379778.6U Active CN216381406U (en) | 2021-09-29 | 2021-09-29 | Groove structure for high-speed magnetic levitation railway tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216381406U (en) |
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2021
- 2021-09-29 CN CN202122379778.6U patent/CN216381406U/en active Active
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