CN214363961U

CN214363961U - Tunnel portal hidden road surface intercepting ditch

Info

Publication number: CN214363961U
Application number: CN202023161436.9U
Authority: CN
Inventors: 胡金鑫; 刘泾堂; 张耀庭; 邱成虎; 李玉平; 杨治军; 包正龙
Original assignee: Gansu Province Transportation Planning Survey and Design Institute Co Ltd
Current assignee: Gansu Province Transportation Planning Survey and Design Institute Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-08
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a highway tunnel road surface drainage field specifically is a hidden road surface intercepting ditch in tunnel entrance to a cave. The problem of current catch basin security and circulation poor is solved. A road surface intercepting ditch is arranged in the road surface of the tunnel opening, two ends of the road surface intercepting ditch are communicated with the curb side ditch, the road surface intercepting ditch is composed of a steel box and OGFC-13 drainage asphalt concrete, the steel box and the OGFC-13 drainage asphalt concrete are both paved on the steel fiber concrete, two ends of the steel box are communicated with the curb side ditch, and the OGFC-13 drainage asphalt concrete is paved on the steel box. This device adopts hidden catch basin design, has increased the rigidity of road surface catch basin effectively, and it is convenient to use simultaneously, and the roughness is good.

Description

Tunnel portal hidden road surface intercepting ditch

Technical Field

The utility model relates to a highway tunnel road surface drainage field specifically is a hidden road surface intercepting ditch in tunnel entrance to a cave.

Background

With the rapid development of highway construction in China, particularly after freeways enter mountainous areas, more and longer highway tunnels are constructed. The tunnel water-proof and drainage engineering is a complex interconnected system engineering, and the tunnel water-proof and drainage disadvantages can be caused no matter the tunnel water-proof and drainage engineering is designed and constructed, or any details in the operation process are neglected or ignored, so that the safety of the tunnel structure is further reduced. Therefore, the tunnel water-proof and drainage project should be reasonably designed, carefully constructed and effectively maintained. In addition, the connection of the tunnel drainage structure and the drainage of the road surface outside the tunnel becomes a difficult point of waterproof and drainage design, and particularly for the design of the hidden section of the tunnel opening, the difference pool can cause uneven settlement of the road surface, and further causes the problems of road surface cracking and vehicle jumping.

Therefore, the design of preventing water drainage of the tunnel needs to optimize surface water and underground water, so that a complete and smooth drainage system is formed inside and outside the tunnel hole, the tunnel hole intercepting ditch is arranged to directly influence the reasonability of drainage of the tunnel pavement, and the driving safety and the driving comfort of the tunnel hole section pavement are influenced. However, the purpose of arranging the road surface intercepting ditch is mainly to prevent rainwater outside the tunnel from flowing into the tunnel and avoid driving safety accidents caused by wet and slippery road surface at the tunnel opening section. The drainage structure has large drainage capacity, but has large construction difficulty, is not compact with peripheral concrete combination, causes uneven settlement due to insufficient compaction and the like, is not smooth in front-back connection and the like, and easily causes the phenomenon of jumping at the tunnel portal. Later stage designers further improve, adopt the open drain drainage structures of little open type (5cm \4cm), the ditch body adopts steel sheet or reinforced concrete, has increased the rigidity of road surface intercepting ditch, has also reduced the inhomogeneous settlement etc. in road surface, nevertheless road surface silt and debris very easily drop in the intercepting ditch, cause the interior drainage channel of intercepting ditch to block up, and water easily overflows and flows into tunnel entrance to a cave section road surface, causes tunnel entrance to a cave section road surface wet and slippery, has great hidden danger to driving safety. Therefore, the design of the tunnel pavement intercepting ditch is still difficult for the design and construction of the tunnel.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hidden road surface catch basin in tunnel entrance to a cave, the effectual poor problem of current catch basin security and circulation of having solved, this device adopts hidden catch basin design, has increased the rigidity of road surface catch basin effectively, and it is convenient to use simultaneously, and the roughness is good.

In order to achieve the above object, the utility model discloses a technical scheme specifically as follows:

the utility model provides a hidden road surface intercepting ditch in tunnel entrance to a cave, is provided with road surface intercepting ditch A in the road surface of tunnel entrance to a cave, road surface intercepting ditch A both ends and curb side ditch B intercommunication, its characterized in that: the road surface intercepting ditch A consists of a steel box 1 and OGFC-13 drainage asphalt concrete 5, the steel box 1 and the OGFC-13 drainage asphalt concrete 5 are both laid on steel fiber concrete 4, two ends of the steel box 1 are communicated with a curb side ditch B, and the OGFC-13 drainage asphalt concrete 5 is laid on the steel box 1.

The two sides of the steel box 1 are communicated with the curb ditch B through hole structures.

The horizontal height of the bottom surface of the steel box 1 is as follows: the height of the two ends is less than that of the center.

The outer surface of the steel box 1 is provided with angle steel 2.

And the steel box 1 is provided with a water leakage hole 3.

And the inner surface and the outer surface of the steel box 1 are sprayed with antirust materials.

The OGFC-13 drainage asphalt concrete 5 is poured in a conical structure, the conical bottom of the conical structure is attached to the water leakage hole 3 of the steel box 1, and the conical surface of the conical structure is attached to the steel fiber concrete 4.

The utility model has the advantages that: the intercepting ditch adopts a steel box form, the bottom of the intercepting ditch adopts steel fiber concrete, and the side wall of the intercepting ditch effectively increases the rigidity of the pavement intercepting ditch by utilizing the occlusion of angle steel and the steel fiber concrete, thereby reducing the phenomena of uneven pavement settlement and hole jumping. In addition, set up the hole that leaks through the steel case top to lay drainage asphalt concrete, can directly the separation outside silt or debris get into the escape canal in, prevent to block up drainage channel in the catch basin, and great improvement the roughness of concrete around the catch basin. Overall speaking, the utility model relates to a road surface intercepting ditch has certain advantage, and it is convenient to be under construction, has stronger maneuverability, and the planarization is good, and the phenomenon that jumps out appears in the later stage is few.

Drawings

FIG. 1 is a plan view of a tunnel portal pavement intercepting drain;

FIG. 2 is a schematic view of the steel box construction;

FIG. 3 is a cross-sectional view taken along line I-I of FIG. 1;

shown in the figure: a, intercepting a ditch on a road surface; b, a curb ditch of the road; 1, steel box; 2, angle steel; 3 water leakage holes; 4 steel fiber concrete; 5OGFC-13 drainage asphalt concrete.

Detailed Description

The technical solution of the present invention is further described by the following specific embodiments with reference to the accompanying drawings:

example one

Referring to the attached drawings 1-3, the utility model relates to a hidden road surface intercepting ditch of tunnel entrance to a cave, the essential element is steel case structure 1 and OGFC-13 drainage asphalt concrete 5. The construction process is approximately consistent with the construction process of the traditional road surface intercepting ditch, and sequentially comprises the steps of foundation reinforcement treatment → steel box processing → pouring and shaping → drainage asphalt concrete laying.

(1) And (3) foundation reinforcement treatment: and after the construction of the roadbed inside and outside the tunnel is finished, excavating a drainage ditch construction space by utilizing excavating equipment, and tamping the foundation before pouring.

(2) Processing a steel box: and (4) preprocessing the steel box 1, and processing the steel box according to the design requirement of the pavement in length. The horizontal height of the bottom surface of the steel box 1 is as follows: the height of the two ends is less than the height of the center, so that water is prevented from being retained in the steel box 1. And the upper surface of the steel box 1 is provided with water leakage holes 3 with equal distance. And a plurality of groups of L80 multiplied by 5 angle steel 2 are respectively welded on two sides of the side wall of the steel box 1. Wherein, the bottom edges of the two L80X 5 angle steels 2 at the bottom are flush with the bottom edge of the steel box 1, and the distance between the bottom edges of the two L80X 5 angle steels 2 at the top and the top of the steel box 1 is 10 cm. And finally, spraying antirust materials on the welding position of the steel box and the inner side and the outer side of the box body.

(3) Pouring and shaping: and (3) pouring steel fiber concrete with the same mark number as the concrete panel on the treated foundation, and when the thickness reaches 15cm, immediately placing the processed and molded steel box 1 at a specified position, wherein the height difference of the bottom surface of the steel box 1 is consistent with the slope rate of the road surface. Further, with temporary fixing measures, the steel box 1 is fixed against displacement of the cast concrete 4. And finally, pouring steel fiber concrete 4, setting the top surface of the steel fiber concrete 4 to be a cone with a specified slope rate, and vibrating and tamping.

(4) Paving drainage asphalt concrete 5: and when the steel fiber concrete 4 reaches the designed strength, paving special material OGFC-13 drainage asphalt concrete 5. Meanwhile, in order to prevent the aggregate of the drainage asphalt concrete 5 from entering the steel box 1, a thin layer of permeable geotextile is placed on the top of the intercepting ditch before laying, and then the drainage asphalt concrete 5 made of special material OGFC-13 is laid and compacted for forming. Wherein, steel case 1 both ends all meet with curb ditch B, and the top keeps leveling with the inboard of curb ditch B.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a hidden road surface intercepting ditch in tunnel entrance to a cave, is provided with the road surface intercepting ditch in the road surface of tunnel entrance to a cave, road surface intercepting ditch both ends and curb side ditch intercommunication, its characterized in that: the road surface intercepting ditch consists of a steel box and OGFC-13 drainage asphalt concrete, wherein the steel box and the OGFC-13 drainage asphalt concrete are both laid on steel fiber concrete, two ends of the steel box are communicated with the curb side ditch, and the OGFC-13 drainage asphalt concrete is laid on the steel box.

2. The tunnel portal hidden pavement intercepting drain of claim 1, characterized in that: and the two sides of the steel box are communicated with the curb ditch to form a through hole structure.

3. The tunnel portal hidden pavement intercepting drain of claim 2, wherein: the horizontal height of the bottom surface of the steel box is as follows: the height of the two ends is less than that of the center.

4. The tunnel portal hidden pavement intercepting drain of claim 3, wherein: and angle steel is arranged on the outer surface of the steel box.

5. The tunnel portal hidden pavement intercepting drain of claim 4, wherein: and the steel box is provided with a water leakage hole.

6. The tunnel portal hidden pavement intercepting drain of claim 5, wherein: and the upper inner surface and the upper outer surface of the steel box are sprayed with antirust materials.

7. The tunnel portal hidden pavement intercepting drain of claim 1, characterized in that: the OGFC-13 drainage asphalt concrete is poured in a conical structure, the conical bottom of the conical structure is attached to the water leakage hole of the steel box, and the conical surface of the conical structure is attached to the steel fiber concrete.