A drain cover plate applicable to the tunnel through which high-speed trains pass

Abstract

The present invention belongs to the technical field of tunnel construction, and particularly relates to a drain cover plate applicable to a tunnel for high-speed train passage, which comprises an upper cover plate and a lower cover plate. The lower cover plate is located below the upper cover plate, and there is a gap between the lower cover plate and the upper cover plate. A plurality of upper drainage holes penetrating through the upper cover plate are provided on the upper cover plate, and a plurality of lower drainage holes penetrating through the lower cover plate are provided on the lower cover plate. The upper drainage holes and the lower drainage holes are arranged in a vertically staggered manner. In the present invention, the drainage holes on the two adjacent upper and lower cover plates are arranged in a vertically staggered manner. On the one hand, it can ensure that the drain cover plate has a large opening ratio, and can avoid being sucked up by the negative pressure of the aerodynamic effect caused by the operation of the high-speed train. On the other hand, it can prevent the groundwater in the trench structure from being splashed out by the aerodynamic effect caused by the operation of the high-speed train, improve the wastewater discharge efficiency in the tunnel, and improve the operation environment in the tunnel, and is applicable to the tunnel for high-speed train passage.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and particularly relates to a channel cover plate applicable to a tunnel for high-speed train passing. Background Art

[0002] Since high-speed railways and high-speed maglev trains run at extremely high speeds and generate large centrifugal forces, they usually have extremely high requirements for the horizontal and vertical alignment. When the terrain fluctuates greatly, tunnels and bridges will account for a large proportion in high-speed railway and high-speed maglev projects. For tunnel projects, the cross-sectional excavation area is usually the most important indicator to measure economy. Therefore, the tunnel cross-sectional clearance usually needs to be minimized on the premise of meeting the design requirements such as the sealing performance, aerodynamic effect, safety and stability of the train.

[0003] When a high-speed train passes through a tunnel, the air in front of the train is compressed to generate positive pressure, and negative pressure is generated at the tail of the train, resulting in a sharp change in air pressure at the same position in the tunnel in a short time. When the tunnel area is fixed, the larger the blockage ratio and the higher the train running speed, the more obvious the above effects will be. When the instantaneous air pressure drops by more than a certain amplitude, the negative pressure may suck up the trench cover plate. To avoid this situation, the trench cover plate needs to be made in a form with a larger opening ratio.

[0004] However, when the drainage volume in the tunnel ditch is large, under the repeated action of positive and negative pressures, the wastewater in the ditch may be stirred up. If the opening of the ditch cover plate is large, the wastewater will splash out from the trench. The splashed wastewater will cause the structure to get wet again, reduce the wastewater discharge efficiency, and promote the development of rust. Repeating like this will cause the wastewater in the tunnel to not be discharged in time, the structure to alternate between dry and wet frequently, leading to a series of adverse consequences such as steel corrosion and concrete deterioration, and then resulting in varying degrees of decline in material durability, equipment stability, and structural safety, causing greater cost pressure and safety hazards to the tunnel operation and management. When the groundwater contains corrosive substances, the above adverse effects will be more prominent. Therefore, it is necessary to design a channel cover plate applicable to a tunnel for high-speed train passing to overcome the above problems. Summary of the Invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a channel cover plate applicable to a tunnel for high-speed train passing, which can avoid secondary splashing of wastewater on the premise of ensuring that the opening ratio of the channel cover plate meets the requirements.

[0006] To achieve the above purpose, the technical solution of the present invention is a channel cover plate applicable to a tunnel for high-speed train passing, including an upper cover plate and a lower cover plate located below the upper cover plate. The upper cover plate is provided with a plurality of upper drainage holes penetrating the upper cover plate, and the lower cover plate is provided with a plurality of lower drainage holes penetrating the lower cover plate; the upper drainage holes and the lower drainage holes are arranged staggeredly in the vertical direction.

[0007] Further, the upper cover plate includes an upper frame, and a plurality of upper ribs arranged at intervals are provided in the upper frame. Two ends of each upper rib in the length direction are respectively fixed on opposite side frames of the upper frame, and upper drainage holes are formed between adjacent upper ribs.

[0008] Furthermore, the top surface of the upper rib is flush with the top surface of the upper frame, and the bottom surface of the upper rib is an arc surface or a slope surface.

[0009] Further, the lower cover plate includes a lower frame, and a plurality of lower ribs arranged at intervals are provided in the lower frame. Two ends of each lower rib in the length direction are respectively fixed on opposite side frames of the lower frame, and lower drainage holes are formed between adjacent lower ribs.

[0010] Furthermore, the bottom surface of the lower rib is an arc surface or a slope surface.

[0011] Furthermore, the top surface of the lower rib is an arc surface or a slope surface.

[0012] Furthermore, the upper cover plate and the lower cover plate are independent of each other, or the upper frame of the upper cover plate and the lower frame of the upper cover plate are connected by a first vertical connecting member.

[0013] Furthermore, two sides of each lower rib are respectively connected to upper ribs on both sides of the upper drainage opening directly above the lower rib through a plurality of second vertical connecting members arranged at intervals along the length directions of both sides of the lower rib.

[0014] Further, the cross section of the upper drainage hole and the cross section of the lower drainage hole are at least one of a circle, an ellipse, a square, a rectangle, and a rhombus.

[0015] Further, at least one middle cover plate is provided between the upper cover plate and the lower cover plate. A middle drainage hole penetrating the middle cover plate is provided on the middle cover plate, and the drainage holes on two adjacent upper and lower cover plates are staggeredly arranged in the vertical direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention sets two or more layers of cover plates as the gutter cover plates, and the drain holes on the vertically adjacent two layers of cover plates are staggered in the vertical direction. On the one hand, it can ensure that the gutter cover plate has a large opening rate and can avoid being sucked up by the negative pressure of the aerodynamic effect caused by the operation of high-speed trains. On the other hand, it can prevent the groundwater in the groove structure from being splashed out by the aerodynamic effect caused by the operation of high-speed trains, improve the wastewater discharge efficiency in the tunnel, and improve the operation environment in the tunnel. It is applicable to high-speed railway tunnels and high-speed maglev tunnels where high-speed trains pass through.

[0018] (2) The bottom surface of the rib of each layer of the cover plate of the gutter cover plate of the present invention and the top surface of the cover plate below the upper cover plate are set as arc surfaces or inclined planes to facilitate guiding the water splashed by the aerodynamic effect in the groove structure to refract back into the groove structure.

[0019] (3) The structural form of the gutter cover plate of the present invention is simple, convenient for inspection and maintenance, and can be widely applied to other grooves. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the independent upper and lower cover plates of the gutter cover plate applicable to the tunnel where high-speed trains pass through provided by the embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the connection of the frames of the upper and lower cover plates of the gutter cover plate applicable to the tunnel where high-speed trains pass through provided by the embodiment of the present invention;

[0023] Figure 3 It is a plan view of the upper cover plate of the gutter cover plate applicable to the tunnel where high-speed trains pass through provided by the embodiment of the present invention;

[0024] Figure 4 It is a plan view of the lower cover plate of the gutter cover plate applicable to the tunnel where high-speed trains pass through provided by the embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the vertical connection of the ribs of the upper and lower cover plates of the gutter cover plate applicable to the tunnel where high-speed trains pass through provided by the embodiment of the present invention;

[0026] Figure 6The plan view of the upper cover plate when the upper and lower cover plate ribs of the gutter cover plate applicable to the tunnel for high-speed train passage provided by the embodiment of the present invention are connected;

[0027] In the figure: 1. Upper cover plate, 101. Upper frame, 102. Upper rib, 103. Upper drain hole, 2. Lower cover plate, 201. Lower frame, 202. Lower rib, 203. Lower drain hole, 3. First vertical connecting piece, 4. Second vertical connecting piece, 5. Groove structure. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more.

[0031] Such as Figures 1-4As shown in the figure, an embodiment of the present invention provides a gutter cover plate applicable to a tunnel through which high-speed trains pass, including an upper cover plate 1 and a lower cover plate 2. The lower cover plate 2 is located below the upper cover plate 1, and there is a gap between the lower cover plate 2 and the upper cover plate 1. A plurality of upper drainage holes 103 penetrating the upper cover plate 1 are provided on the upper cover plate 1, and a plurality of lower drainage holes 203 penetrating the lower cover plate 2 are provided on the lower cover plate 2. The upper drainage holes 103 and the lower drainage holes 203 are arranged staggeredly in the vertical direction. By setting two layers of cover plates as the gutter cover plate and staggering the drainage holes on the upper and lower cover plates in the vertical direction, the projection range of the upper cover plate 1 in the vertical direction can cover the drainage holes on the lower cover plate 2. On the one hand, it can ensure that the gutter cover plate has a large opening rate and can avoid being sucked up by the negative pressure of the aerodynamic effect caused by the operation of high-speed trains. On the other hand, it can prevent the groundwater in the trench structure 5 from being splashed out by the aerodynamic effect caused by the operation of high-speed trains, improve the waste water discharge efficiency in the tunnel, and improve the operation environment in the tunnel. It is applicable to high-speed railway tunnels and high-speed maglev tunnels through which high-speed trains pass. At the same time, a certain gap should be ensured between the upper cover plate 1 and the lower cover plate 2 to ensure sufficient air circulation paths.

[0032] Further, the upper cover plate 1 includes an upper frame 101, and a plurality of upper rib strips 102 arranged at intervals are provided inside the upper frame 101. Both ends of each upper rib strip 102 in the length direction are fixed on the opposite side frames of the upper frame 101, and the upper drainage holes 103 are formed between adjacent upper rib strips 102.

[0033] Furthermore, the top surface of the upper rib strip 102 is flush with the top surface of the upper frame 101, which is convenient for installation and walking. The bottom surface of the upper rib strip 102 is an arc surface or a slope surface, and the middle of the bottom surface of the upper rib strip 102 is opposite to the bottom surface of the trench structure 5 through the lower drainage hole 203. Both ends of the bottom surface of the upper rib strip 102 are located above the corresponding lower rib strips 202, and the water splashed up by the aerodynamic effect in the trench structure 5 can be refracted back into the trench structure 5 or refracted onto the top surfaces of the lower rib strips 202 of the lower cover plate 2.

[0034] Further, the lower cover plate 2 includes a lower frame 201. A plurality of lower ribs 202 arranged at intervals are provided inside the lower frame 201. Both ends of each lower rib 202 in the length direction are respectively fixed to opposite side frames of the lower frame 201. Lower drain holes 203 are formed between adjacent lower ribs 202. The upper ribs 102 of the upper cover plate 1 in this embodiment should be able to completely cover the corresponding lower drain holes 203 on the lower cover plate 2 in the vertical direction. The lower ribs 202 of the lower cover plate 2 should be able to completely cover the corresponding upper drain holes 103 on the upper cover plate 1 in the vertical direction. That is, the width of the upper ribs 102 should not be less than the width of the lower drain holes 203, and the width of the lower ribs 202 should not be less than the width of the upper drain holes 103, so as to ensure that all the water flow excited in the groove structure 5 can be refracted back into the groove structure 5.

[0035] Furthermore, the bottom surface of the lower rib 202 is an arc surface or a slope surface, and the bottom surface of the lower rib 202 faces the bottom surface of the groove structure 5, so that the water splashed by the pneumatic effect in the groove structure 5 can be refracted back into the groove structure 5.

[0036] Furthermore, the top surface of the lower rib 202 is an arc surface or a slope surface, and the middle of the top surface of the lower rib 202 faces the upper drain hole 103. Both ends of the top surface of the lower rib 202 are respectively below two adjacent upper ribs 102, so as to smoothly guide the water refracted to the top surface of the lower rib 202 along the bottom surface of the upper rib 102 back into the groove structure 5.

[0037] As an implementation manner, the upper cover plate 1 and the lower cover plate 2 are independently arranged, as Figure 2 shown. For the installation of the two cover plates, it only needs to set a stepped shape on the side wall of the groove structure 5 and place the upper cover plate 1 and the lower cover plate 2 respectively. As another implementation manner, the upper cover plate 1 and the upper cover plate 1 can also be connected as a whole, that is, the edge of the upper frame 101 and the edge of the lower frame 201 are connected by a first vertical connecting member 3, which is convenient for replacement and maintenance.

[0038] Furthermore, both sides of each lower rib 202 are respectively connected to the upper ribs 102 on both sides of the upper drain opening directly above the lower rib 202 through a plurality of second vertical connecting members 4 arranged at intervals along the length direction on both sides of the lower rib 202, so as to meet the load-bearing and deformation resistance capabilities, as Figure 5 and Figure 6 shown. The size and dimensions of the second vertical connecting member 4 can be determined according to calculations, and at the same time, the air circulation requirements should be met.

[0039] Further, the cross-section of the upper drain hole 103 and the cross-section of the lower drain hole 203 can be at least one of a circle, an ellipse, a square, a rectangle, and a rhombus, or can be other polygons or irregular figures, but they must all meet the requirement of the opening ratio and the drain holes of the upper and lower cover plates 2 are staggered in the vertical direction.

[0040] Further, at least one middle cover plate is provided between the upper cover plate 1 and the lower cover plate 2. The middle cover plate is provided with middle drain holes penetrating through the middle cover plate, and the drain holes on the upper and lower adjacent cover plates are staggered in the vertical direction. In this embodiment, three or more cover plates are provided as the trench cover plate, and a certain gap is left between adjacent layers to ensure the air circulation requirement. The principle is the same as that of the trench cover plate with two cover plates described above. By staggering the drain holes on adjacent two cover plates in the vertical direction, on the premise of ensuring a large opening ratio, it can effectively prevent the groundwater in the trench structure 5 from being splashed out by the aerodynamic effect caused by the operation of the high-speed train, improve the wastewater discharge efficiency in the tunnel, and improve the operation environment in the tunnel. The structural form of the middle cover plate in this embodiment can be the same as that of the lower cover plate 2, and will not be elaborated here.

[0041] The above are only some basic principles of the present invention, and do not impose any specific restrictions on the trench cover plate structure, size, material, shape, manufacturing scheme, and installation process of the present invention. Therefore, all possible corresponding modifications and equivalents that can be utilized belong to the scope of the patent applied for by the present invention.

Claims

1. A drain cover plate applicable to the tunnel through which high-speed trains pass, characterized in that: It includes an upper cover plate and a lower cover plate. The lower cover plate is located below the upper cover plate, and there is a gap between the lower cover plate and the upper cover plate. A plurality of upper drain holes penetrating the upper cover plate are provided on the upper cover plate, and a plurality of lower drain holes penetrating the lower cover plate are provided on the lower cover plate. The upper drain holes and the lower drain holes are arranged staggeredly in the vertical direction, and the projection of the upper cover plate on the lower cover plate completely covers the lower drain holes. The upper cover plate includes an upper frame, and a plurality of upper ribs arranged at intervals are provided inside the upper frame. Both ends of each upper rib in the length direction are respectively fixed on the opposite side frames of the upper frame, and the upper drain holes are formed between adjacent upper ribs. The lower cover plate includes a lower frame, and a plurality of lower ribs arranged at intervals are provided inside the lower frame. Both ends of each lower rib in the length direction are respectively fixed on the opposite side frames of the lower frame, and the lower drain holes are formed between adjacent lower ribs. The bottom surface of the lower rib is an arc surface or a slope surface, and the top surface of the lower rib is an arc surface or a slope surface. The top surface of the upper rib is flush with the top surface of the upper frame, and the bottom surface of the upper rib is an arc surface or a slope surface. Both sides of each lower rib are respectively connected to the upper ribs on both sides of the upper drain hole directly above the lower rib through a plurality of second vertical connectors arranged at intervals along the length direction on both sides of the lower rib.

2. The water channel cover plate applicable to the tunnel for high-speed train passage according to claim 1, wherein: The upper cover plate and the lower cover plate are independent of each other, or the upper frame of the upper cover plate and the lower frame of the upper cover plate are connected through a first vertical connector.

3. The water channel cover plate applicable to the tunnel for high-speed train passage according to claim 1, characterized in that: The cross-section of the upper drain hole and the cross-section of the lower drain hole are at least one of a circle, an ellipse, a square, a rectangle, and a rhombus.

4. The water channel cover plate applicable to the tunnel for high-speed train passage according to claim 1, wherein: At least one middle cover plate is provided between the upper cover plate and the lower cover plate. The middle cover plate is provided with middle drain holes penetrating the middle cover plate, and the drain holes on the upper and lower adjacent cover plates are arranged staggeredly in the vertical direction.

Images