UHPC deceleration strip for tunnel and reflective mark

Abstract

The utility model discloses a UHPC (Ultra High Performance Concrete) deceleration strip for a tunnel and a reflective sign, and belongs to the technical field of tunnel engineering. The UHPC deceleration strip for the tunnel and the reflective mark are arranged on a tunnel concrete roadbed layer and comprise a base arranged on the tunnel concrete roadbed layer, a plurality of convex points arrayed on the base and reflective paint coated on the convex points. The beneficial effects of the utility model reside in that the vibration, deceleration and reflection are integrated, fatigue driving and vehicle speed reduction of a driver and passengers can be prevented through the vibration effect of a vehicle, the boundary of a tunnel can be effectively displayed through the reflection mark, and the driving safety is ensured; the ultra-high performance concrete (UHPC) deceleration strip is made of ultra-high performance concrete (UHPC) and has ultra-high strength and ultra-high wear resistance, and the UHPC deceleration strip for the tunnel and the reflective mark are embedded into the road surface, so that the integrity of the UHPC deceleration strip and the reflective mark of the roadbed can be greatly improved, the service life of the structure is greatly prolonged, and the maintenance cost of the whole life cycle is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering, and particularly relates to a UHPC speed bump and a reflective sign for tunnels. Background Art

[0002] With the vigorous development of China's transportation facilities, tunnels have become a very important part of China's highways. In order to reduce the vehicle speed and show the tunnel boundary to ensure driving safety, during the design process, speed bumps and reflective signs are usually set at the entrance and middle of the tunnel.

[0003] Traditional speed bumps and reflective signs are usually set separately. The speed bumps are fixed on the road surface by screws, while the reflective signs are fixed on both sides of the tunnel wall. The construction is relatively complex. The materials of traditional speed bumps are mainly rubber or metal. When set on the road surface, they need to arch up to achieve the purpose of vehicle deceleration, which exposes too high above the ground and is easily damaged by vehicles and needs to be replaced frequently, posing a great safety hazard. And the reflective signs are not easy to clean because they are set on both sides of the tunnel wall. Summary of the Utility Model

[0004] The purpose of the embodiment of the utility model is to provide a UHPC speed bump and a reflective sign for tunnels, which are made of high-strength and high-wear-resistant UHPC materials to make the speed bump and the reflective sign for tunnels, solve the problem that conventional speed bumps are easily damaged, and the UHPC speed bump and the reflective sign for tunnels can be installed synchronously during the construction of the tunnel asphalt pavement, with small construction difficulty and can simplify the construction process of the tunnel pavement. On the other hand, the utility model integrates the reflective sign and the speed bump into one body, with perfect and rich functions and high practical value, so as to solve at least one technical problem involved in the background art.

[0005] In order to solve the above technical problems, the utility model is realized as follows:

[0006] The embodiment of the utility model provides a UHPC speed bump and a reflective sign for tunnels, which are set on the tunnel concrete road base layer and include a base set on the tunnel concrete road base layer, a plurality of convex points arrayed on the base, and a reflective coating applied on the convex points.

[0007] Optionally, the UHPC speed bump and the reflective sign for tunnels include a UHPC longitudinal speed bump and a reflective sign laid on both sides of the tunnel along the advancing direction of the tunnel pavement and a UHPC transverse speed bump and a reflective sign laid along the cross section of the tunnel.

[0008] Optionally, a tunnel asphalt pavement layer is further laid on the tunnel concrete road base layer, and the upper surface of the base is flush with the upper surface of the tunnel asphalt pavement layer.

[0009] Optionally, the raised points are cylindrical raised dots with a diameter of 3.0 cm to 5.0 cm and a height of 1.5 cm to 2.5 cm; the raised points are arranged in a rectangular vertical array on the base, and the distance between adjacent raised points is 2.0 cm to 3.0 cm.

[0010] Optionally, the raised points disposed on the base of the UHPC longitudinal deceleration strip and the reflective marking have the same height; the height of the raised points disposed on the base of the UHPC transverse deceleration strip and the reflective marking changes in a wave crest shape along the road forward direction, and along the road forward direction, the top surfaces of the raised points disposed on both sides of the base of the UHPC transverse deceleration strip and the reflective marking are flush with the surface of the tunnel asphalt pavement layer.

[0011] Optionally, the reflective coating with a thickness of 0.5 mm to 1 mm is evenly applied on the raised points.

[0012] Optionally, the UHPC deceleration strip and the reflective marking for the tunnel are made of UHPC material with a compressive strength of 120 MPa to 150 MPa.

[0013] Optionally, the center line of the UHPC longitudinal deceleration strip and the reflective marking is 20 cm to 30 cm away from the edge of the road width.

[0014] Optionally, the UHPC transverse deceleration strip and the reflective marking are set in groups of every 3 rows to 9 rows between the two UHPC longitudinal deceleration strips and the reflective marking. The distance between adjacent two rows of the UHPC transverse deceleration strip and the reflective marking in each group is 30 cm to 40 cm, and the distance between adjacent two groups of the UHPC transverse deceleration strip and the reflective marking is 400 m to 600 m.

[0015] Optionally, the base size of the UHPC longitudinal deceleration strip and the reflective marking is 60 cm to 100 cm in length × 15 cm to 20 cm in width, the base height is equal to the thickness of the tunnel asphalt pavement layer, and the base height range is 12 cm to 18 cm; the base size of the UHPC transverse deceleration strip and the reflective marking is 30 cm to 40 cm in length × 30 cm to 40 cm in width, the base height is equal to the thickness of the tunnel asphalt pavement layer, and the base height range is 12 cm to 18 cm.

[0016] The beneficial effects of the embodiments of the present invention are as follows:

[0017] (1) High strength and good wear resistance: Due to the high strength and high wear resistance of UHPC materials, using them to make speed bumps can not only effectively improve the durability of speed bumps, giving them a longer service life, but also UHPC speed bumps and reflective signs can better adapt to extreme working environments, and their service life can match the design life of the road, eliminating the need for replacement and repair during the road's use, thus significantly reducing the full-life cycle usage cost.

[0018] (2) Simple structure and convenient installation: The UHPC speed bumps and reflective signs for tunnels only consist of three parts: the base, the bumps, and the reflective paint. With a simple structure, they can be mass-produced prefabricated in the factory, and their structural shape is regular, making construction convenient. They can be poured simultaneously with the asphalt concrete pavement, ensuring good integrity.

[0019] (3) Integration of multiple functions simplifies the tunnel construction process: The UHPC speed bumps and reflective signs for tunnels integrate vibration, speed reduction, and reflection. They can prevent drivers and passengers from fatigue driving and reduce vehicle speed through the vibration effect of the vehicle. At the same time, they can effectively display the tunnel boundary through the reflective signs to ensure driving safety. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. 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 be obtained based on these drawings, where:

[0021] Figure 1 It is a schematic plan layout diagram of a UHPC speed bump and reflective sign for a tunnel of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a UHPC longitudinal speed bump and reflective sign of the present invention;

[0023] Figure 3 It is a schematic top view structural diagram of a UHPC longitudinal speed bump and reflective sign of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a UHPC transverse speed bump and reflective sign of the present invention;

[0025] Figure 5 It is a schematic top view structural diagram of a UHPC transverse speed bump and reflective sign of the present invention;

[0026] Figure 6 It is a schematic cross-sectional structural diagram of a UHPC longitudinal speed bump and reflective sign of the present invention;

[0027] Figure 7 This is a schematic cross-sectional structure diagram of the UHPC transverse speed bump and reflective sign of the present utility model;

[0028] In the figure, 1 is the tunnel concrete road base course; 2 is the tunnel asphalt pavement layer; 3 is the UHPC longitudinal speed bump and reflective sign; 31 is the base; 32 is the bump; 33 is the reflective coating; 4 is the UHPC transverse speed bump and reflective sign. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] The terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0031] Please refer to Figures 1 to 7 As shown, the present utility model provides a UHPC speed bump and reflective sign for tunnels, which is arranged on the tunnel concrete road base course 1. The tunnel asphalt pavement layer 2 is also laid on the tunnel concrete road base course 1. The UHPC speed bump and reflective sign for tunnels includes the UHPC longitudinal speed bump and reflective sign 3 laid on both sides of the tunnel along the advancing direction of the tunnel road surface and the UHPC transverse speed bump and reflective sign 4 laid along the cross-section of the tunnel.

[0032] Specifically, referring again to Figure 1 As shown, the center line of the UHPC longitudinal speed bump and reflective sign 3 is 20 cm to 30 cm away from the edge of the road width. The UHPC transverse speed bump and reflective sign 4 is arranged in groups of every 3 rows to 9 rows between the two UHPC longitudinal speed bump and reflective signs 3. The distance between two adjacent rows of the UHPC transverse speed bump and reflective sign 4 in each group is 30 cm to 40 cm, and the distance between two adjacent groups of the UHPC transverse speed bump and reflective sign 4 is 400 m to 600 m.

[0033] The UHPC longitudinal speed bump and the reflective marking 3 and the UHPC transverse speed bump and the reflective marking 4 are installed on the surface of the tunnel concrete road base layer 1 before the asphalt concrete paving of the tunnel asphalt pavement layer 2, and then the asphalt concrete is poured.

[0034] The UHPC speed bump and the reflective marking for the tunnel are made of UHPC material with a compressive strength of 120 MPa to 150 MPa. Due to the high strength and high wear resistance of the UHPC material, using it to make the speed bump can not only effectively improve the durability of the speed bump and give it a longer service life, but also the UHPC speed bump and the reflective marking can better adapt to extreme working environments. Its service life can match the design life of the road use, and there is no need to replace and repair it during the road use process, which can greatly reduce its full life cycle use cost.

[0035] See again Figures 2 - 6 As shown, taking the structure of the UHPC longitudinal speed bump and the reflective marking 3 as an example, the UHPC speed bump and the reflective marking for the tunnel include a base 31 arranged on the tunnel concrete road base layer 1, a plurality of bumps 32 arrayed on the base 31, and a reflective coating 33 applied on the bumps 32. The structure of the UHPC speed bump and the reflective marking for the tunnel is simple, can be mass-produced prefabricated in the factory, and has a regular structure shape, convenient construction, and can be poured simultaneously with the asphalt concrete pavement, with good integrity.

[0036] The upper surface of the base 31 is flush with the upper surface of the tunnel asphalt pavement layer 2. Specifically, the base size of the UHPC longitudinal speed bump and the reflective marking is 60 cm to 100 cm in length × 15 cm to 20 cm in width, and the base height is equal to the thickness of the tunnel asphalt pavement layer, and the base height range is 12 cm to 18 cm; the base size of the UHPC transverse speed bump and the reflective marking is 30 cm to 40 cm in length × 30 cm to 40 cm in width, and the base height is equal to the thickness of the tunnel asphalt pavement layer, and the base height range is 12 cm to 18 cm.

[0037] The bump 32 is a cylindrical protruding dot, with a diameter of 3.0 cm to 5.0 cm and a height of 1.5 cm to 2.5 cm; the bumps 32 are vertically arrayed in a rectangular shape on the base 31, and the distance between adjacent bumps 32 is 2.0 cm to 3.0 cm.

[0038] The heights of the bumps 32 arranged on the base 31 of the UHPC longitudinal speed bump and the reflective marking 3 are the same.

[0039] See again Figure 7As shown, the height of the bumps 32 disposed on the base 31 of the UHPC transverse deceleration strip and the reflective sign 4 varies in a wave-peak shape along the road advancing direction, and along the road advancing direction, the top surfaces of the bumps 32 disposed on both sides of the base 31 of the UHPC transverse deceleration strip and the reflective sign 4 are flush with the surface of the tunnel asphalt pavement layer 2. In this way, the UHPC deceleration strip and reflective sign for tunnel integrates vibration, deceleration and reflection. It can prevent the drivers and passengers from fatigue driving and reduce the vehicle speed through the vibration effect of the vehicle. At the same time, it can effectively display the tunnel boundary through the reflective sign to ensure driving safety.

[0040] The reflective coating 33 is evenly applied on the bumps 31, and the thickness is 0.5 mm to 1 mm.

[0041] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0042] In addition, it should be pointed out that the scope of the methods and systems in the embodiments of the present invention is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0043] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims, and all of them belong to the protection scope of the present invention.

Claims

1. A UHPC speed bump and reflective sign for tunnels, which are arranged on the tunnel concrete road base layer, and are characterized in that, It includes a base set on the tunnel concrete road base course, a plurality of convex points arrayed on the base, and a reflective coating applied on the convex points.

2. The UHPC speed bump and reflective sign for tunnels according to claim 1, characterized in that, The UHPC speed bump and reflective sign for tunnel include UHPC longitudinal speed bumps and reflective signs laid on both sides of the tunnel along the advancing direction of the tunnel road surface and UHPC transverse speed bumps and reflective signs laid along the cross-section of the tunnel.

3. The UHPC speed bump and reflective sign for tunnel according to claim 2, characterized in that A tunnel asphalt pavement layer is also laid on the tunnel concrete road base course, and the upper surface of the base is flush with the upper surface of the tunnel asphalt pavement layer.

4. A UHPC speed bump and reflective sign for tunnels according to claim 3, characterized in that, The convex points are cylindrical protruding round dots with a diameter of 3.0 cm to 5.0 cm and a height of 1.5 cm to 2.5 cm; the convex points are vertically arrayed in a rectangle on the base, and the spacing between adjacent convex points is 2.0 cm to 3.0 cm.

5. A UHPC speed bump and reflective sign for tunnels according to claim 4, characterized in that, The heights of the convex points laid on the base of the UHPC longitudinal speed bump and reflective sign are the same; the heights of the convex points laid on the base of the UHPC transverse speed bump and reflective sign change in a wave crest shape along the advancing direction of the road, and along the advancing direction of the road, the top surfaces of the convex points on both sides of the base of the UHPC transverse speed bump and reflective sign are flush with the surface of the tunnel asphalt pavement layer.

6. The UHPC speed bump and reflective sign for tunnels according to claim 4, characterized in that, The reflective coating with a thickness of 0.5 mm to 1 mm is evenly applied on the convex points.

7. A UHPC speed bump and reflective sign for tunnels according to claim 1, characterized in that, The UHPC speed bump and reflective sign for tunnel are made of UHPC material with a compressive strength of 120 MPa to 150 MPa.

8. The UHPC speed bump and reflective sign for tunnels according to claim 3, characterized in that, The center line of the UHPC longitudinal speed bump and reflective sign is 20 cm to 30 cm away from the edge of the road width.

9. The UHPC speed bump and reflective sign for tunnel according to claim 8, characterized in that, The UHPC transverse speed bump and reflective sign are set in groups of every 3 rows to 9 rows between two UHPC longitudinal speed bumps and reflective signs. The spacing between adjacent two rows of the UHPC transverse speed bump and reflective sign in each group is 30 cm to 40 cm, and the spacing between adjacent two groups of the UHPC transverse speed bump and reflective sign is 400 m to 600 m.

10. A UHPC speed bump and reflective sign for tunnels according to claim 9, characterized in that, The base size of the UHPC longitudinal speed bump and reflective sign is 60 cm to 100 cm in length × 15 cm to 20 cm in width, and the base height is equal to the thickness of the tunnel asphalt pavement layer, and the base height range is 12 cm to 18 cm; the base size of the UHPC transverse speed bump and reflective sign is 30 cm to 40 cm in length × 30 cm to 40 cm in width, and the base height is equal to the thickness of the tunnel asphalt pavement layer, and the base height range is 12 cm to 18 cm.

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