CN214219739U - Double-ear wall integral open cut tunnel structure - Google Patents

Abstract

The utility model discloses an integral open cut tunnel structure of ears wall, include the side wall and be located the hunch portion of two this side walls upper ends, the hunch portion adopts reinforced concrete structure, at each the side wall upper end is equipped with an eared wall respectively, and this eared wall adopts reinforced concrete structure, the backfill body is established to the region between hunch portion and two eared walls, two the cushion cap structure is established to the lower extreme of side wall, this cushion cap structure with the integrative setting of side wall the lower extreme distribution of cushion cap structure has bored concrete pile, and the lower extreme of this bored concrete pile stretches into the basement rock, its upper end with the integrative setting of cushion cap structure. The structure adopts the pile foundation bearing platform integral open cut tunnel structure, so that the problem of hanging of a structural foundation can be effectively solved, and the structure can better adapt to complex terrains; impact load of dangerous rock falling rocks can be effectively resisted, and the stress effect is better; the construction difficulty is effectively reduced; the structure is simple and light, and the engineering cost can be effectively saved.

Description

Double-ear wall integral open cut tunnel structure

Technical Field

The utility model relates to a tunnel engineering technical field, concretely relates to integral open cut tunnel structure of ears wall.

Background

The railway tunnel construction in China is rapidly developed, the construction scale of the tunnel engineering is increased day by day, the operation safety risk brought by the construction scale is also increased continuously, the requirements of related departments are also increased continuously, and the operation safety is more important particularly in the field of high-speed rails. In the southwest mountainous area of China, the situations of bridge-tunnel adjacency and abutment entry under the influence of terrain also widely exist.

When the topography of the tunnel portal is steep, dangerous rocks or rockfall are harmful to an uphill slope, a tunnel open cut tunnel or a shed tunnel needs to be lengthened, the traditional open cut tunnel structure is complex and difficult to solve the problem of hanging the bridge and tunnel foundation, the stress effect is poor, impact load caused by dangerous rocks and rockfall cannot be effectively resisted, and meanwhile construction interference is large and engineering cost is high.

Disclosure of Invention

To the technical problem that exists at present, the utility model provides an integral open cut tunnel structure of ears wall to solve the problem among the prior art.

In order to achieve the purpose of the invention, the utility model provides the following technical scheme:

the utility model provides an integral open cut tunnel structure of ears wall, includes the side wall and is located the hunch portion of two this side walls upper ends, the hunch portion adopts reinforced concrete structure, at each the side wall upper end is equipped with an eared wall respectively, and this eared wall adopts reinforced concrete structure, the body, two are backfilled to regional establishing between hunch portion and two eared walls cushion cap structure is established to the lower extreme of side wall, this cushion cap structure with the side wall is integrative to be set up the lower extreme of cushion cap structure distributes and has the bored concrete pile, and the lower extreme of this bored concrete pile stretches into the basement rock, its upper end with the integrative setting of cushion cap structure.

Preferably, the steel bars at the bottom of the side wall extend into the bearing platform structure and are welded with the steel bars at the bottom of the bearing platform structure.

Preferably, an external waterproof layer is arranged on the outer side of the arch part, and the external waterproof layer is composed of asphalt, waterproof boards and brickwork.

Preferably, a drainage pipeline is arranged on the outer side of the arch part, and a drainage hole is formed in the ear wall and is communicated with the drainage pipeline.

Preferably, the drilled piles are distributed below the bearing platform structure in a quincunx shape.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the structure adopts the pile foundation bearing platform integral open cut tunnel structure, so that the problem of hanging of a structural foundation can be effectively solved, and the structure can better adapt to complex terrains;

2. the structure adopts the arch part of the reinforced concrete structure, and is provided with the backfill body, so that the impact load of dangerous rock falling rocks can be effectively resisted, and the stress effect is better;

3. the utility model has the advantages that the structure of the bearing platform and the side wall are integrated, so the excavation and slope protection can be carried out on the whole, and the construction difficulty is effectively reduced;

4. meanwhile, the abutment body structure does not need to be independently constructed, the structure is simple and light, and the engineering cost can be effectively saved.

Description of the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a schematic illustration of the ribbing of the side wall, the stud, the arch and the cap structure of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The double-lug wall integral open cut tunnel structure shown in the attached figures 1-2 is of a reinforced concrete structure integrally and comprises side walls 1 and arch parts 2 positioned at the upper ends of the two side walls 1, each arch part 2 is of a reinforced concrete structure, an ear wall 3 is arranged at the upper end of each side wall 1 respectively, each ear wall 3 is of a reinforced concrete structure, a backfill body is arranged in the area between each arch part 2 and each ear wall 3, a soil body is covered on the surface of the backfill body to serve as a buffer layer, a bearing platform structure 4 is arranged at the lower ends of the two side walls 1, the bearing platform structure 4 is integrally arranged with the side walls 1, and reinforcing steel bars at the bottoms of the side walls 1 extend into the bearing platform structure 4 and are welded and fixed with reinforcing steel bars at the bottoms of the bearing platform structures 4.

The lower extreme of cushion cap structure 4 is plum blossom mold and distributes and has bored pile 5, and the lower extreme of this bored pile 5 stretches into the basement rock, and its upper end sets up with cushion cap structure 4 an organic whole, makes the utility model discloses a open cut tunnel constitutes monolithic structure.

An externally-attached waterproof layer is arranged on the outer side of the arch part 2 and consists of asphalt, waterproof boards and brickwork. The outer side of the arch part 2 is also provided with a drainage pipeline, the concrete arrangement mode adopts the prior art, two ear walls 3 are respectively provided with a water drainage hole 6, and the water drainage holes 6 are communicated with the drainage pipeline.

The utility model discloses a structure:

1. can be better adapted to complex terrains

When the topography of the tunnel portal is steep, dangerous rocks or rockfall are frequently damaged on an uphill slope, a tunnel open cut tunnel or a shed tunnel needs to be lengthened, and the traditional open cut tunnel structure is complex and difficult in solving the problem of bridge and tunnel foundations. The structure adopts a combined structure of the whole open cut tunnel of the pile foundation cap and the bridge abutment, so that the problem of hanging the structural foundation can be effectively solved;

2. good stress effect

Although the beam-column shed tunnel can effectively solve the foundation problem, the beam-column shed tunnel has poor stress effect and cannot effectively resist impact load caused by dangerous rock falling rocks;

3. construction convenience

When the bridge abutment is adjacent to the hole or enters the hole, the traditional open cut tunnel structure and the bridge abutment have large construction interference, and the excavation and slope protection of the structure can be integrally constructed due to the integration of the bridge and the tunnel, so that the construction difficulty is effectively reduced;

4. saving investment

The abutment body structure does not need to be independently constructed, so that the structural body is simpler and lighter than the traditional double-lug wall type structure, and the engineering cost can be effectively saved.

The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (5)

1. The utility model provides an integral open cut tunnel structure of ears wall, includes that side wall (1) and arch portion (2) that are located two these side wall (1) upper ends, its characterized in that: arch portion (2) adopt reinforced concrete structure, at each side wall (1) upper end is equipped with an eared wall (3) respectively, and this eared wall (3) adopt reinforced concrete structure, the backfill body is established in the region between arch portion (2) and two eared walls (3), two cushion cap structure (4) is established to the lower extreme of side wall (1), this cushion cap structure (4) with side wall (1) an organic whole sets up the lower extreme distribution of cushion cap structure (4) has bored pile (5), and the lower extreme of this bored pile (5) stretches into the basement rock, its upper end with cushion cap structure (4) an organic whole sets up.

2. The binaural wall integral type open-cut tunnel structure according to claim 1, characterized in that: and the steel bars at the bottom of the side wall (1) extend into the bearing platform structure (4) and are welded with the steel bars at the bottom of the bearing platform structure (4).

3. The binaural wall integral type open-cut tunnel structure according to claim 1, characterized in that: and an externally-attached waterproof layer is arranged on the outer side of the arch part (2), and is composed of asphalt, waterproof boards and brickwork.

4. A binaural wall integral type open-cut tunnel structure according to claim 3, characterized in that: and a drainage pipeline is arranged on the outer side of the arch part (2), a water drainage hole (6) is formed in the ear wall (3), and the water drainage hole (6) is communicated with the drainage pipeline.

5. A binaural wall integral type open-cut tunnel structure according to any of claims 1-4, characterized in that: the drilling piles (5) are distributed below the bearing platform structure (4) in a quincunx shape.

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