CN215165710U - Tunnel side slope structure - Google Patents
Tunnel side slope structure Download PDFInfo
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- CN215165710U CN215165710U CN202120846624.0U CN202120846624U CN215165710U CN 215165710 U CN215165710 U CN 215165710U CN 202120846624 U CN202120846624 U CN 202120846624U CN 215165710 U CN215165710 U CN 215165710U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a tunnel side slope structure, which comprises a concrete structure layer and a grouting anchor rod, wherein the concrete structure layer is formed on the surface of a rock mass structure layer of a side slope body and is a double-layer concrete structure layer, the double-layer concrete structure layer comprises an inner layer of foaming concrete layer and an outer layer of steel fiber concrete layer, and a layer of reinforcing steel bar net surface is formed between the foaming concrete layer and the steel fiber concrete layer; and the grouting anchor rod penetrates through the concrete structure layer in an inclined mode and is inserted into the side slope rock mass structure layer with the pre-opened hole, a steel reinforcement mesh cage is arranged at the position, corresponding to the concrete structure layer, of the grouting anchor rod, the steel reinforcement mesh cage is inserted into the rock mass structure layer of the side slope body in the inner portion and extends out of the concrete structure layer, the steel reinforcement mesh cage is welded with the steel reinforcement mesh surface on the outer side face, and the steel reinforcement mesh cage is fixedly connected with the grouting anchor rod in the mesh cage in a grouting mode. The utility model discloses a tunnel slope structure has the structural stability of preferred, and can drop loose piece of rock and rubble on the gable rock mass and effectively protect.
Description
Technical Field
The utility model relates to a tunnel construction technical field in the road bridge construction technique particularly, relates to a tunnel slope structure.
Background
The approach in the existing road, railway and urban traffic construction involves the construction of a tunnel structure, wherein the tunnel is a building for laying railway or constructing road for vehicle to pass through, and is constructed underground or underwater or in the mountain, wherein the common mountain tunnel is the most common tunnel structure form and is used for reducing the detour mountain road of the mountain area to construct the tunnel structure through mountain.
As the construction of highway tunnels in mountain areas is more and more, mountain bodies in steep areas are often encountered, side slopes in the mountain areas are often collapse slope volumes, the integrity and stability of rock bodies are poor, dangerous rocks with more quantity and relatively smaller block diameters are developed, rock blocks are easy to peel off to cause broken stones, meanwhile, the rock bodies are easy to form dangerous rocks under the actions of self gravity, joint crack surfaces and the like, falling rocks and collapse bodies are easy to form due to falling rocks or toppling, and the highway lines and traffic safety are greatly damaged; the common treatment mode is to arrange a side slope for protection, but the traditional side slope protection structure cannot change the stability of a side slope rock body, and only a guniting protection measure is adopted, so that broken loose rock blocks of the side slope still easily fall off, and the stability of the side slope is difficult to ensure; and the stability of reinforcement is not high after the secondary reinforcement, and the reinforcement is easy to be damaged.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a tunnel slope structure to solve the defect in the above-mentioned technical background.
The utility model provides a technical problem adopt following technical scheme to realize:
a tunnel side slope structure is formed on the surface of a side slope body and comprises a concrete structure layer and a grouting anchor rod, wherein the concrete structure layer is formed on the surface of a rock structure layer of the side slope body and is a double-layer concrete structure layer and comprises an inner foamed concrete layer and an outer steel fiber concrete layer, the outer surface of the steel fiber concrete layer is leveled, and a steel bar net surface is formed between the foamed concrete layer and the steel fiber concrete layer; and the grouting anchor rod obliquely penetrates through the concrete structure layer and is inserted into the side slope rock mass structure layer with the pre-opened hole, a steel reinforcement mesh cage is arranged at the position corresponding to the concrete structure layer, the steel reinforcement mesh cage is inserted into the rock mass structure layer of the side slope body in the inner part and extends out of the concrete structure layer in the outer part, the inner diameter of the steel reinforcement mesh cage is 8-15 cm, the steel reinforcement mesh cage is welded with the steel reinforcement mesh surface on the outer side surface, and the steel reinforcement mesh cage is fixedly connected with the grouting anchor rod in the mesh cage in a grouting mode.
As a further limitation, planting holes are formed in the concrete structure layer, the planting holes are fan-shaped holes or rhombic holes which are vertically arranged, and holes are formed in positions, corresponding to the foamed concrete layer and the steel fiber concrete layer of the concrete structure layer, of the planting holes, but the steel bar net surface structure is reserved;
planting holes are arranged on the same height plane of the concrete structure layer at equal intervals;
the concrete structure layer is provided with horizontal fin as the buffering median in the upper and lower part that corresponds the planting hole, just the buffering median carries out slip casting at the partial position that the concrete structure layer was stretched out to the reinforcing bar cylinder mould.
As a further limitation, a drainage channel is poured at the bottom of the concrete structure layer.
As a further limitation, the thickness ratio of the foamed concrete layer to the steel fiber concrete layer is 1:3 to 1: 2.
As a further limitation, a layer of protective net surface is formed on the surface of the concrete structure layer, the protective net surface is a diamond-shaped steel wire net surface, the protective net surface is woven by using cross buckles, the strength of steel wires of the protective net surface is more than or equal to 1800MPa, and hot galvanizing is adopted for surface anticorrosion treatment;
the protective net surface is fixedly connected on the part of the steel reinforcement net cage extending out of the concrete structure layer through one or the combination of steel wire rope connection, fixed buckle connection and welding connection.
And as a further limitation, the depth of a drilling hole of the anchor rod drilling hole in a rock mass structural layer of the side slope body is 3-5M, the hole diameter of the drilling hole is larger than 50mm, and M30 cement mortar is adopted for anchor rod grouting.
Has the advantages that: the utility model discloses a tunnel slope structure is exclusively used in the tunnel import and the both sides slope stable in structure of exit position, and its structural stability is better, can effectively restrain the horizontal displacement and the settlement displacement of side slope, simultaneously, adopts stock slip casting reinforcing its side slope rock mass self stability cooperation reinforcing bar cylinder mould can carry out effectual atress buffering on the side slope body; meanwhile, the planting grids and the protection net surface can be conveniently arranged, the effects of keeping water and soil and blocking rockfall of the mountain are achieved, the scouring of water flow to the slope is reduced, and the protection effect of the slope is improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Wherein: 1. a rock mass structural layer; 2. planting holes; 3. a protective mesh surface; 4. grouting an anchor rod; 5. a drainage channel; 6. an anchor rod head; 7. grouting a fixed part; 8. a steel bar net cage; 9. a steel fiber concrete layer; 10. reinforcing steel bar net surface; 11. and (4) foaming a concrete layer.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
In the illustrated embodiment, the dimensions of some of the structures are changed for convenience of description, and the contents in the above illustration are only used for expressing the position relationship of each structure, and do not represent the actual dimensional proportion relationship after the structures are molded.
Referring to fig. 1 and 2, in the present embodiment, the tunnel slope structure is directly formed on the surface of the rock structure layer 1 of the slope body, during the forming, a foamed concrete layer 11 is formed on the surface of the rock structure layer 1, a position space of the planting hole 2 is reserved at a corresponding position of the foamed concrete layer 11, then a steel bar mesh 10 is formed on the surfaces of the foamed concrete layer 11 and the planting hole 2, a steel fiber concrete layer 9 is formed on the surface of the steel bar mesh 10 corresponding to the position of the foamed concrete layer 11, and surface leveling is performed, wherein the thickness ratio of the foamed concrete layer 11 to the steel fiber concrete layer 9 is controlled to be 1: 2; the foamed concrete layer 11, the steel bar net surface 10 and the steel fiber concrete layer 9 jointly form a concrete structure layer, and meanwhile, the bottom of the steel fiber concrete layer 9 is ditched, and a drainage channel 5 is formed in the ditching position.
After the steel fiber concrete layer 9 is fixed, directly drilling holes on the surface of the steel fiber concrete layer to serve as anchor rod drilling holes of the grouting anchor rod 4, wherein the drilling hole depth of the anchor rod drilling holes on the rock mass structure layer of the side slope body is 3m, the drilling hole diameter is 50 mm-60 mm, then concentric blind holes are drilled in the depth area of the anchor rod drilling positions corresponding to the concrete structure layer, the hole depth of each anchor rod drilling hole extends into the surface layer of the rock mass structure layer 1, a steel reinforcement net cage 8 is sleeved on the concentric blind holes, the steel reinforcement net cage 8 is internally inserted into the surface layer of the rock mass structure layer 1 of the side slope body and externally extends out of the steel fiber concrete layer 9, the inner diameter of the steel reinforcement net cage 8 is 9cm, the steel reinforcement net cage is inserted after the holes are drilled at the position corresponding to the steel reinforcement net 10 and welded with the steel reinforcement net 10 at the outer side, the end surfaces of the steel reinforcement net cage 8 are drilled with holes, the grouting anchor rod 4 is inserted into the hole positions, and then grouting anchor rod 4 is grouted and fixed, the grouting is performed by using M30 cement mortar, the grouting pressure is ensured during grouting, and the grouting fixing part 7 on the inner side of the reinforcement cage 8 is filled with the grouting pressure, so that the fixation of the grouting anchor rod 4 and the reinforcement cage 8 is ensured. The above-mentioned structure of this embodiment can make the concrete structure layer have the wholeness of preferred to have the bulk strength of preferred and stable after fixing through grout stock 4, it can guarantee that the slope deflection obviously reduces, and tends to stably, has reached the expectancy effect in order to consolidate.
In this embodiment, planting hole 2 that sets up on the concrete structure layer is the rhombus hole of vertical setting, these planting hole 2 are according to the layer setting, planting hole 2 of each layer is equidistant setting on the same high plane, simultaneously also can adopt fan-shaped hole in other embodiments, the compaction is backfilled through the earth of position nearby to planting hole 2, and the seeding, the setting of planting hole 2 is favorable to the velocity of flow through the water of buffering median buffering slope body one side undershoot, reduce the washing away to the slope body, improve the life of slope body, planting green planting in planting the district, supplementary buffering median buffering rivers, tunnel mouth department's greening effect has been taken into account simultaneously.
And all be provided with one deck protection wire side 3 on every layer planting hole 2 is surperficial, and this protection wire side 3 is used for protecting the upper part falling rocks for the falling rocks fall into protection wire side 3, and protection wire side 3 is the rhombus steel wire net face, uses the cross buckle to weave, and protection wire side 3 has higher intensity, and its steel wire intensity more than or equal to 1800MPa, and adopts the hot-galvanize to do surface corrosion protection. The protective net surface 3 is connected on the part of the steel bar net cage 8 extending out of the concrete structure layer in a welding mode, the welding position is positioned at the lower part of the anchor rod head 6 of the grouting anchor rod 4, and the welding position is reserved at the position of the anchor rod head 6. In other embodiments, the protection net surface 3 may also be connected by a steel wire rope or a fixing buckle, or connected and fixed by a combination of steel wire rope connection, fixing buckle connection and welding connection.
In other embodiments, also can be on corresponding planting the hole, the lower part is provided with horizontal fin as the buffering median, this buffering median carries out the slip casting shaping in the steel reinforcement cylinder mould stretches out the part position of concrete structure layer, the setting of buffering median can block the soil stone that carries in partial rivers through the buffering median in the mountain region of our country south rainy mountain region, reduce the washing effect of rivers that undershoot to the slope, avoid a large amount of soil stones to dash the road surface of tunnel mouth department simultaneously, bring the driving hidden danger, its effect is especially obvious when rainy season.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.
Claims (10)
1. A tunnel side slope structure is characterized by comprising a concrete structure layer and a grouting anchor rod, wherein the concrete structure layer is formed on the surface of a rock mass structure layer of a side slope body and is a double-layer concrete structure layer which comprises an inner foamed concrete layer and an outer steel fiber concrete layer, the outer surface of the steel fiber concrete layer is leveled, and a layer of steel bar mesh surface is formed between the foamed concrete layer and the steel fiber concrete layer; and the grouting anchor rod obliquely penetrates through the concrete structure layer and is inserted into the side slope rock mass structure layer with the pre-opened hole, a steel reinforcement mesh cage is arranged at the position corresponding to the concrete structure layer, the steel reinforcement mesh cage is inserted into the rock mass structure layer of the side slope body in the inner part and extends out of the concrete structure layer in the outer part, the inner diameter of the steel reinforcement mesh cage is 8-15 cm, the steel reinforcement mesh cage is welded with the steel reinforcement mesh surface on the outer side surface, and the steel reinforcement mesh cage is fixedly connected with the grouting anchor rod in the mesh cage in a grouting mode.
2. The tunnel slope structure of claim 1, wherein the concrete structure layer is provided with planting holes, the planting holes are fan-shaped holes or vertically arranged diamond-shaped holes, and the planting holes are provided with holes at positions corresponding to a foamed concrete layer and a steel fiber concrete layer of the concrete structure layer and retain a steel mesh structure.
3. The tunnel slope structure of claim 2, wherein the planting holes are arranged at equal intervals on the same height plane of the concrete structure layer.
4. The tunnel slope structure of claim 2, wherein the concrete structure layer is provided with transverse ribs as buffer isolation strips at the upper and lower parts corresponding to the planting holes, and the buffer isolation strips are formed by grouting at the parts of the reinforcement cages extending out of the concrete structure layer.
5. The tunnel slope structure of claim 1, wherein a drainage channel is cast at the bottom of the concrete structure layer.
6. The tunnel slope structure of claim 1, wherein the ratio of the thickness of the foamed concrete layer to the thickness of the steel fiber concrete layer is 1:3 to 1: 2.
7. The tunnel slope structure of claim 1, wherein a protective mesh surface is formed on the surface of the concrete structure layer, and the protective mesh surface is a diamond-shaped steel wire mesh surface and is woven by using cross-shaped fasteners.
8. The tunnel slope structure of claim 7, wherein the steel wire strength of the protective mesh surface is not less than 1800MPa, and hot galvanizing is adopted for surface anticorrosion treatment.
9. The tunnel slope structure of claim 7, wherein the protective net surface is connected and fixed on the part of the steel reinforcement net cage extending out of the concrete structure layer through one or a combination of steel wire rope connection, fixed buckle connection and welding connection.
10. The tunnel slope structure of claim 1, wherein the depth of the drilling hole of the grouting anchor rod on the rock mass structure layer of the slope body is 3-5 m, and the diameter of the drilling hole is larger than 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120846624.0U CN215165710U (en) | 2021-04-23 | 2021-04-23 | Tunnel side slope structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120846624.0U CN215165710U (en) | 2021-04-23 | 2021-04-23 | Tunnel side slope structure |
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| CN215165710U true CN215165710U (en) | 2021-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102657622B1 (en) * | 2023-09-06 | 2024-04-16 | 주식회사 동아특수건설 | Reinforcing device that promotes the stability of the ground surface |
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2021
- 2021-04-23 CN CN202120846624.0U patent/CN215165710U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102657622B1 (en) * | 2023-09-06 | 2024-04-16 | 주식회사 동아특수건설 | Reinforcing device that promotes the stability of the ground surface |
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