Highway tunnel open and close ditch integrated high-strength concrete drainage ditch

Abstract

The utility model relates to the technical field of highway tunnel drainage, in particular to a highway tunnel light and dark ditch integrated high-strength concrete drainage ditch which comprises an open ditch type cover plate and a drainage blind ditch, the open ditch type cover plate is flush with a tunnel pavement, the drainage blind ditch is located below the tunnel pavement, and the open ditch type cover plate comprises an open ditch part and a cover plate part. The drainage blind ditch comprises a blind ditch part and a connecting part, the open ditch part and the blind ditch part are used for diversion and drainage, and the cover plate part is movably connected with the connecting part; the open trench type cover plate is used for solving the problems that in the prior art, a drainage blind trench cover plate is difficult to open to clean clogging objects and needs to meet the cleaning and separating principle; by means of the integrated design of the open trench type cover plate and the drainage blind trench, the requirement for the high drainage amount of the tunnel can be met, and the requirement for cleaning and separating can also be met; the blind ditch convenient to open is formed through the cover plate part and the connecting part, the structure of the device is simplified, and the effect of maintaining and cleaning the blind ditch conveniently is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway tunnel drainage, and more specifically, to an integrated high-strength concrete drainage ditch for open and dark ditches in a highway tunnel. Background Art

[0002] In order to reduce tunnel water leakage and ensure driving safety, tunnels need to be equipped with drainage systems to meet the high drainage demand. At the same time, the drainage system needs to be set up to facilitate maintenance and cleaning during the operation period. At present, the highway tunnel drainage system follows the "clean and dirty separation" principle required by the specification. The tunnel drainage ditch usually adopts a side drainage ditch, which is generally composed of a drainage culvert and an open drainage ditch. Among them, the open ditch is in an inverted Ω shape and is a prefabricated component. It is arranged on both sides of the tunnel road and is level with the main road surface. It directly receives accumulated water, fire water, sewage, etc. from the road surface; the drainage culvert is located below the tunnel road surface and receives fissure groundwater through a transverse drainage pipe.

[0003] In existing practical applications, the accumulation of sand and gravel brought by fissure groundwater and the calcium carbonate scaling layer caused by the accumulation of operation time will be deposited in the drainage ditch, causing blockage to a certain extent and hindering the drainage capacity of the drainage ditch. Therefore, it is very important to clean the drainage ditch during the operation period.

[0004] In existing practical applications, since the cover of the drainage culvert cannot be opened directly, inspection wells are generally set up every 50 to 100 meters to inspect and clean the drainage culvert. However, this setting method of the drainage culvert not only consumes a lot of manpower and time for inspection and cleaning during the operation period, but is also not very effective in cleaning the blockages in the drainage culvert, resulting in poor drainage of fissure groundwater, which may cause water and mud gushing on the road surface and affect the normal operation of the tunnel. Utility Model Content

[0005] The utility model aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide an integrated high-strength concrete drainage ditch for open and dark ditches in a highway tunnel, which is used to solve the problems in the prior art that silt blockages in drainage and dark ditches are difficult to clean during operation, the cover plates of drainage and dark ditches cannot be opened, and the traditional drainage ditch covers cannot achieve clean and dirty separation.

[0006] The technical solution adopted by the utility model is an integrated high-strength concrete drainage ditch of an open and dark ditch in a highway tunnel, which includes an open ditch cover plate and a drainage dark ditch. The open ditch cover plate is flush with the tunnel pavement, and the drainage dark ditch is located below the tunnel pavement. The open ditch cover plate includes an open ditch portion and a cover plate portion, and the drainage dark ditch includes a dark ditch portion and a connecting portion. The open ditch portion and the dark ditch portion are used for diversion and drainage, and the cover plate portion is movably connected to the connecting portion.

[0007] It is beneficial to use the integrated design of the open ditch cover and the drainage ditch, which can meet the needs of high tunnel drainage and clean and pollutant separation; it is beneficial to form an easy-to-open ditch through the cover and the connecting part, simplifying the device structure and improving the convenience of maintenance and cleaning of the ditch.

[0008] The thickness of the cover plate portion gradually decreases from the outer end to the inner end, and the ratio of the outer end thickness H1 of the cover plate portion to the inner end thickness H2 of the cover plate portion is in the range of 2:5-1:2.

[0009] It is beneficial to have a cover plate portion whose thickness decreases along one side, which can not only save the manufacturing materials of the cover plate portion and shorten the construction time, but also reduce the weight of the cover plate portion, saving effort and time for maintenance personnel when opening the cover plate portion; it is beneficial to provide a stable structure for the bearing capacity of the cover plate portion through a specific ratio range of the outer end thickness of the cover plate portion and the inner end thickness of the cover plate portion.

[0010] The cover plate portion comprises an upper cover surface and a lower cover surface, wherein the upper cover surface is flush with the tunnel road surface, and the lower cover surface and the connecting portion form a closed cavity.

[0011] It is beneficial to make the upper cover flush with the tunnel pavement, which is not only convenient for collecting accumulated water, fire water, sewage, etc. on the tunnel pavement, so that the drainage can be discharged along the length of the tunnel in the open ditch part of the upper cover; it is also beneficial to form a closed cavity through the lower cover and the connecting part, so that the fissure groundwater can be discharged, achieving the effect of clean and pollutant separation.

[0012] The lower cover surface includes an outer end plane segment, an inner end plane segment, a first curved surface and a second curved surface. The first curved surface is connected to the outer end plane segment, and a line connecting the centers of the first curved surface and the second curved surface is connected to the inner end plane segment, and a line connecting the centers of the first curved surface and the second curved surface is connected to the inner end plane segment, and a line connecting the centers of the first curved surface and the second curved surface is located in the dark groove portion.

[0013] It is beneficial to improve the flatness and convenience of connecting the blind ditch part through the plane section; it is beneficial to minimize the volume of the cover plate part whose thickness is reduced along one side through the connection of the first curved surface and the second curved surface, thereby reducing the amount of material used and its weight, making it easier for maintenance personnel to open the cover plate and save time, and it is also beneficial to improve the force safety of the entire cover plate when the traffic load rolls the cover plate close to one side of the tunnel pavement.

[0014] The open groove portion is in the shape of a semicircular groove, the depth radius of the semicircular groove is R1, and the ratio of the depth radius R1 to the outer end thickness H1 of the cover portion is in the range of 1:2-2:3; the radius of the first arc surface is R2, and the ratio of the radius R2 of the first arc surface to the depth radius R1 of the semicircular groove is in the range of 1:2-2:4; the radius of the second arc surface is R3, and the ratio of the radius R3 of the second arc surface to the depth radius R1 of the semicircular groove is in the range of 1:2-2:5.

[0015] It is beneficial to reduce the dead corners of the open ditch part through the semicircular groove shape, thereby preventing silt blockage; it is beneficial to reduce the volume and weight of the open ditch part through a specific ratio range of the depth radius and the outer end thickness of the cover part without affecting the bearing capacity of the cover part, so that maintenance personnel can save effort and time when opening the cover part.

[0016] The center line of the open groove part is close to the outer end of the cover part, the distance from the center line to the outer end of the cover part is L1, and the distance from the center line to the inner end of the cover part is L2. The ratio of L1 to L2 is in the range of 1:4-1:2.

[0017] It is beneficial to adjust the center of gravity of the cover plate part through a specific ratio range of the distance between the center line and the outer end of the cover plate part and the inner end of the cover plate part, so that the operator can save more effort when standing at the inner end to open the cover plate part.

[0018] The connecting portion includes a first connecting surface and a second connecting surface, wherein the first connecting surface is connected to the outer end plane section, and the second connecting surface is connected to the inner end plane section.

[0019] It is beneficial to connect with the outer end plane section and the inner end plane section respectively through the first connecting surface and the second connecting surface, thereby increasing the sealing performance of the cover plate part and the dark ditch part.

[0020] The dark ditch portion also includes a drainage ditch side opening, and the drainage ditch side opening is used to divert fissure water.

[0021] It is beneficial to collect fissure water in the tunnel lining through the side openings of the drainage ditch and divert it to the drainage ditch, thereby reducing the erosion of the tunnel lining by the fissure water, reducing tunnel disease problems and extending the service life of the tunnel.

[0022] The drainage ditch and the open ditch cover form a long rectangular side ditch, the cross-sectional clearance height of the long rectangular side ditch is H3, the bottom height of the long rectangular side ditch is H4, the total height of the long rectangular side ditch is: H1+H3+H4, the cross-sectional clearance width of the long rectangular side ditch is L6, the wall thickness of the long rectangular side ditch is L5, and the total height of the long rectangular side ditch is: L5+L6+L5; the ratio of the total cross-sectional height to the total cross-sectional width of the long rectangular side ditch is in the range of 1.5-2.

[0023] It is beneficial to form a long rectangular side ditch through an open ditch cover and a drainage ditch, reduce the width of the long rectangular side ditch close to the tunnel pavement side, prevent the tunnel traffic markings from being drawn within the long rectangular side ditch, and improve the operational safety of the long rectangular side ditch; at the same time, the regular long rectangular side ditch is also convenient for cast-in-place construction.

[0024] The cover plate portion also includes a splicing surface, and multiple open groove cover plates are spliced ​​along the length direction of the tunnel through the splicing surface, and the splicing surface is a splicing groove; the splicing groove is arranged horizontally along the open groove cover plate, and the splicing groove is in the shape of a groove, the bottom of the groove is parallel to the upper cover surface of the open groove cover plate, and the depth of the groove is d; the ratio of the depth d of the groove to the inner end thickness H2 of the cover plate portion is in the range of 1:5-1:10; waterproof coating or water-stop mortar is laid in the splicing groove.

[0025] It is beneficial to splice multiple open groove cover plates along the length direction of the tunnel through the splicing surface, thereby improving the construction flexibility; it is beneficial to improve the water-stopping sealing through the splicing surface, thereby enhancing the drainage and sewage separation effect in the tunnel; it is beneficial to achieve the best waterproof effect of the groove without affecting the strength of the cover plate part through the ratio relationship between the layout direction and depth of the groove and the cover plate part.

[0026] Compared with the prior art, the beneficial effects of the utility model are as follows: through the integrated design of the open ditch cover and the drainage ditch, it can meet the needs of high drainage volume in the tunnel and the needs of clean and dirty separation; a drainage ditch that is easy to open is formed by the cover part and the connecting part, which simplifies the device structure and improves the convenience of maintenance and cleaning of the ditch during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional view of the drainage ditch of the present utility model.

[0028] Figure 2 It is a cross-sectional view of the open ditch cover plate of the utility model.

[0029] Figure 3 It is a cross-sectional view of the dark ditch part and the connecting part of the utility model.

[0030] Figure 4 Schematic diagram of multiple cover plate splicing grooves of the utility model. A preferred example of splicing surface cross section and top view.

[0031] Figure 5 This is a cross-sectional view of a drainage ditch according to a preferred embodiment of the present invention.

[0032] Figure 6 This is a cross-sectional view of an open-ditch cover plate of a preferred example of the present utility model.

[0033] Figure 7 It is a top view of the joint surface of another preferred example of multiple open groove cover plates of the utility model.

[0034] Explanation of the accompanying drawings: open ditch portion 1, cover plate portion 2, upper cover surface 21, lower cover surface 22, outer end plane section 221, inner end plane section 222, first curved surface 223, second curved surface 224, hidden ditch portion 3, connecting portion 4, first connecting surface 41, second connecting surface 42, drainage ditch side opening 43, splicing groove 5. DETAILED DESCRIPTION

[0035] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] Example 1

[0037] like Figure 1-7 As shown, this embodiment provides an integrated high-strength concrete drainage ditch for open and dark ditches in a highway tunnel, which includes an open ditch cover and a drainage dark ditch. The open ditch cover is flush with the tunnel pavement, and the drainage dark ditch is located below the tunnel pavement. The open ditch cover includes an open ditch portion 1 and a cover portion 2, and the drainage dark ditch includes a dark ditch portion 3 and a connecting portion 4. The open ditch portion 1 and the dark ditch portion 3 are used for diversion and drainage, and the cover portion 2 is movably connected to the connecting portion 4.

[0038] In this embodiment, the open ditch cover is prefabricated with high-strength concrete and is a special-shaped cover with different thicknesses. The drainage ditch is cast on site, and the drainage ditch formed by casting is roughly rectangular. The connecting portion 4 of the drainage ditch includes a left side wall and a right side wall of different heights. The left side wall is 72 cm high and is spliced ​​with the head of the open ditch cover. The right side wall is 80 cm high and is spliced ​​with the end of the outer end plane section 221 of the open ditch cover.

[0039] The thickness of the cover plate portion 2 gradually decreases from the outer end to the inner end, and the ratio of the outer end thickness H1 of the cover plate portion 2 to the inner end thickness H2 of the cover plate portion 2 is in the range of 2:5-1:2.

[0040] In this embodiment, the open groove cover is in the shape of an upright spoon, with a horizontal width W1 of 50 cm and a longitudinal length W2 of 50 cm. It consists of a recessed open groove portion and a cover portion. The thickness of the cover portion 22 gradually decreases from the outer end to the inner end. The thickest side close to the open groove portion 1 is 13 cm, and the thinnest side at the other end is 5 cm.

[0041] The cover plate portion 2 includes an upper cover surface 21 and a lower cover surface 22 . The upper cover surface 21 is flush with the tunnel road surface, and the lower cover surface 22 forms a closed cavity with the dark ditch portion 3 and the connecting portion 4 .

[0042] In this embodiment, the upper cover surface 21 of the cover plate portion 2 is flush with the tunnel pavement, which is not only convenient for collecting accumulated water, fire water, sewage, etc. on the tunnel pavement, but also allows the drainage to be discharged along the length direction of the tunnel at the open ditch portion 1 of the upper cover surface 21; the lower cover surface 22 forms a closed cavity with the dark ditch portion 3 and the connecting portion 4, allowing the fissure groundwater to be discharged, thereby achieving the effect of cleaning and sewage separation.

[0043] The lower cover surface 22 includes a plane segment and a curved surface segment, the plane segment includes an outer end plane segment 221 and an inner end plane segment 222, the curved surface segment includes a first curved surface 223 and a second curved surface 224, the first curved surface 223 is connected to the outer end plane segment 221, and the center line of the first curved surface 223 is located at the open groove portion 1, and the second curved surface 224 is connected to the inner end plane segment 222, and the center line of the second curved surface 224 is located at the dark groove portion 3.

[0044] In this embodiment, the side of the open trench cover plate close to the tunnel pavement is the inner end, and the side away from the tunnel pavement is the outer end. The length of the outer end plane section 221 is 14 cm, and the length of the inner end plane section 222 is 15 cm. From the outside to the inside, the outer end plane section 221, the first curved surface 223, the second curved surface 224, and the inner end plane section 222 are smoothly connected in sequence.

[0045] The open groove portion 1 is in the shape of a semicircular groove, the depth radius of the semicircular groove is R1, and the ratio of the depth radius R1 to the outer end thickness H1 of the cover portion 2 is in the range of 1:2-2:3; the radius of the first arc surface 223 is R2, and the ratio of the radius R2 of the first arc surface 223 to the depth radius R1 of the semicircular groove is in the range of 1:2-2:4; the radius of the second arc surface 224 is R3, and the ratio of the radius R3 of the second arc surface 224 to the depth radius R1 of the semicircular groove is in the range of 1:2-2:5.

[0046] In this embodiment, the open groove cover is in the shape of a spoon placed upright, the depression at the head is the open groove portion 1 for drainage, the open groove portion 1 is in a semicircular shape with a radius of 7.5 cm, and the outer end thickness H1 of the cover portion 2 is 13 cm. The radius R2 of the first curved surface 223 connected to the outer end plane section 221 is 5 cm, and the radius R3 of the second curved surface 224 connected to the inner end plane section 222 is 10 cm.

[0047] The center line of the open groove part 1 is close to the outer end of the cover part 2, the distance from the center line to the outer end of the cover part 2 is L1, and the distance from the center line to the inner end of the cover part 2 is L2. The ratio of L1 to L2 is in the range of 1:4-1:2.

[0048] In this embodiment, the distance L1 from the line connecting the centers of the circle to the outer end of the cover plate portion 2 is 12.5 centimeters, and the distance L2 from the line connecting the centers of the circle to the inner end of the cover plate portion 2 is 37.5 centimeters.

[0049] The connecting portion 4 includes a first connecting surface 41 and a second connecting surface 42 . The first connecting surface 41 is connected to the outer end plane section 221 , and the second connecting surface 42 is connected to the inner end plane section 222 .

[0050] In this embodiment, the first connecting surface 41 and the second connecting surface 42 are respectively connected to the outer end plane section 221 and the inner end plane section 222, thereby increasing the sealing performance of the cover plate portion 2 and the dark channel portion 3.

[0051] The dark ditch portion 3 further includes a drainage ditch side opening 43, and the drainage ditch side opening 43 is used to guide the fissure water.

[0052] In this embodiment, the drainage ditch side opening 43 of the dark ditch portion 3 is a circular tube with a diameter of 100 cm.

[0053] The drainage ditch and the open ditch cover form a long rectangular side ditch, the cross-sectional clearance height of the long rectangular side ditch is H3, the bottom height of the long rectangular side ditch is H4, the total height of the long rectangular side ditch is: H1+H3+H4, the cross-sectional clearance width of the long rectangular side ditch is L6, the wall thickness of the long rectangular side ditch is L5, and the total height of the long rectangular side ditch is: L5+L6+L5; the ratio of the total cross-sectional height to the total cross-sectional width of the long rectangular side ditch is in the range of 1.5-2.

[0054] In this embodiment, the drainage ditch and the open ditch cover form a long rectangular side ditch, the cross-sectional clearance height H3 of the long rectangular side ditch is 62 cm, the bottom height H4 of the long rectangular side ditch is 10 cm, the total height of the long rectangular side ditch is 85 cm, the wall thickness L5 of the long rectangular side ditch is 10 cm, the cross-sectional clearance width L6 of the long rectangular side ditch is 30 cm, and the total cross-sectional width of the long rectangle is 50 cm.

[0055] The cover plate portion 2 also includes a splicing surface, and multiple open groove cover plates are spliced ​​along the length direction of the tunnel through the splicing surface. The splicing surface is a splicing groove 5, and the splicing groove 5 is arranged horizontally along the open groove cover plate; the splicing groove 5 is in the shape of a groove, and the bottom of the splicing groove 5 is parallel to the upper cover surface 21 of the open groove cover plate. The ratio of the depth d of the splicing groove 5 to the inner end thickness H2 of the cover plate portion 2 is in the range of 1:5-1:10; waterproof coating or water-stop mortar is laid in the splicing groove 5.

[0056] In this embodiment, the splicing surface is a splicing groove 5. The splicing groove 5 is provided at both ends of the open ditch cover along the tunnel direction, and grooves of equal width and depth are reserved inward from the longitudinal head and tail, and the groove depth d is 1.5 cm, which is used to fill the micro-expansion mortar when multiple open ditch cover plates are spliced ​​longitudinally to form a seal, so that the open ditch drainage does not flow into the dark ditch part 3.

[0057] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A high-strength concrete drainage ditch integrated with open and dark ditches in a highway tunnel, characterized in that: It includes an open ditch cover plate and a drainage ditch. The open ditch cover plate is flush with the tunnel pavement. The drainage ditch is located below the tunnel pavement. The open ditch cover plate includes an open ditch portion and a cover plate portion. The drainage ditch includes a ditch portion and a connecting portion. The open ditch portion and the ditch portion are used for diversion and drainage. The cover plate portion is movably connected to the connecting portion.

2. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 1 is characterized in that: The thickness of the cover plate portion gradually decreases from the outer end to the inner end, and the ratio of the outer end thickness H1 of the cover plate portion to the inner end thickness H2 of the cover plate portion is in the range of 2:5-1:

2.

3. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 1 is characterized in that: The cover plate portion comprises an upper cover surface and a lower cover surface, wherein the upper cover surface is flush with the tunnel road surface, and the lower cover surface and the connecting portion form a closed cavity.

4. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 3 is characterized in that: The lower cover surface includes a plane segment and a curved surface segment, the plane segment includes an outer end plane segment and an inner end plane segment, the curved surface segment includes a first curved surface and a second curved surface, the first curved surface is connected to the outer end plane segment, and a line connecting the centers of the first curved surface and the second curved surface is connected to the inner end plane segment, and a line connecting the centers of the second curved surface and the dark groove portion.

5. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 4 is characterized in that: The open groove portion is in the shape of a semicircular groove, the depth radius of the semicircular groove is R1, and the ratio of the depth radius R1 to the outer end thickness H1 of the cover portion is in the range of 1:2-2:3; the radius of the first arc surface is R2, and the ratio of the radius R2 of the first arc surface to the depth radius R1 of the semicircular groove is in the range of 1:2-2:4; the radius of the second arc surface is R3, and the ratio of the radius R3 of the second arc surface to the depth radius R1 of the semicircular groove is in the range of 1:2-2:

5.

6. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 1, characterized in that: The center line of the open groove part is close to the outer end of the cover part, the distance from the center line to the outer end of the cover part is L1, and the distance from the center line to the inner end of the cover part is L2. The ratio of L1 to L2 is in the range of 1:4-1:

2.

7. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 5, characterized in that: The connecting portion includes a first connecting surface and a second connecting surface, wherein the first connecting surface is connected to the outer end plane section, and the second connecting surface is connected to the inner end plane section.

8. The high-strength concrete drainage ditch integrated with open and dark ditch in highway tunnel according to claim 7, characterized in that: The drainage ditch and the open ditch cover form a long rectangular side ditch, the cross-sectional clearance height of the long rectangular side ditch is H3, the bottom height of the long rectangular side ditch is H4, the total height of the long rectangular side ditch is: H1+H3+H4, the cross-sectional clearance width of the long rectangular side ditch is L6, the wall thickness of the long rectangular side ditch is L5, and the total height of the long rectangular side ditch is: L5+L6+L5; the ratio of the total cross-sectional height to the total cross-sectional width of the long rectangular side ditch is in the range of 1.5-2.

9. The high-strength concrete drainage ditch integrated with open and dark ditch in a highway tunnel according to any one of claims 1 to 8, characterized in that: The cover plate portion also includes a splicing surface, and multiple open groove cover plates are spliced ​​along the length direction of the tunnel through the splicing surface. The splicing surface is a splicing groove, and the splicing groove is arranged horizontally along the open groove cover plate; the splicing groove is in the shape of a groove, and the bottom of the groove is parallel to the upper cover surface of the open groove cover plate. The ratio of the depth d of the groove to the inner end thickness H2 of the cover plate portion is in the range of 1:5-1:10, and waterproof coating or water-stop mortar is laid in the splicing groove.

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