CN221032661U - A honeycomb annular lets and presses supporting construction for tunnel country rock large deformation - Google Patents
A honeycomb annular lets and presses supporting construction for tunnel country rock large deformation Download PDFInfo
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- CN221032661U CN221032661U CN202322721672.9U CN202322721672U CN221032661U CN 221032661 U CN221032661 U CN 221032661U CN 202322721672 U CN202322721672 U CN 202322721672U CN 221032661 U CN221032661 U CN 221032661U
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- honeycomb
- aluminum
- tunnel
- support structure
- honeycomb aluminum
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- 239000011435 rock Substances 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 78
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 78
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 230000001413 cellular effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, which comprises an aluminum plate member, a honeycomb aluminum member, a steel bar anchor, an initial support and a secondary lining, wherein the aluminum plate member is arranged on the periphery of the tunnel; the primary support is constructed after the tunnel is excavated; the honeycomb aluminum holes of the honeycomb aluminum component are arranged along the axial direction of the tunnel; the aluminum plate members are arranged on the upper side and the lower side of the honeycomb aluminum member, and the honeycomb aluminum member is clamped to form a honeycomb aluminum yielding support structure unit; the cellular aluminum yielding support structure unit is fixed on the primary support through the steel bar anchor, and is sealed to form a cellular aluminum annular yielding support structure; the secondary lining is applied after the honeycomb aluminum annular yielding support structure. The utility model has the advantages that: the large deformation energy is absorbed by crushing honeycomb aluminum, so that the deformation coordination capacity of the tunnel supporting structure is enhanced, the bearing capacity of the whole supporting structure is improved, and the safety of the tunnel lining structure under the large deformation of tunnel surrounding rock is ensured.
Description
Technical Field
The utility model relates to the technical field of tunnel engineering, in particular to a honeycomb annular yielding support structure for large deformation of tunnel surrounding rock.
Background
Along with the construction of a national water network, a batch of major diversion and regulation projects are built in the mountain and the drastic mountain areas in the middle and western parts of China, and a tunnel water conveying mode is mostly adopted; the tunnels have the characteristics of long line, large burial depth and the like, and cannot avoid various complex geological structures, high ground stress, soft rock, groundwater and the like. The method is affected by bad geology, the surrounding rock is greatly deformed in the process of excavating the tunnel, the surrounding rock is greatly deformed to cause fracture surface invasion, and the primary support is damaged and even the secondary lining generates cracks. In order to release deformation of surrounding rocks and enhance the deformation coordination capacity of tunnel supporting measures, it is necessary to design a honeycomb annular yielding supporting structure for large deformation of the surrounding rocks of the tunnel, enhance the deformation coordination capacity of the tunnel, avoid structural damage problems and ensure the safety of the tunnel supporting structure.
Disclosure of Invention
The utility model aims to disclose a honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, which is used for enhancing tunnel deformation coordination capacity, avoiding structural damage problem and ensuring tunnel support structure safety.
In order to achieve the aim, the utility model discloses a honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, which comprises an aluminum plate member, a honeycomb aluminum member, a steel bar anchor, an initial support and a secondary lining; the primary support is applied after the tunnel is excavated, and the honeycomb aluminum holes of the honeycomb aluminum component are arranged along the axial direction of the tunnel; the aluminum plate members are arranged on the upper side and the lower side of the honeycomb aluminum member, and the honeycomb aluminum member is clamped to form a honeycomb aluminum yielding support structure unit; the cellular aluminum yielding support structure unit is fixed on the primary support through the steel bar anchor, and is sealed to form a cellular aluminum annular yielding support structure; the secondary lining is applied after the honeycomb aluminum annular yielding support structure.
In the honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, the thickness of the honeycomb aluminum component is 6-12 cm.
The honeycomb aluminum holes of the honeycomb aluminum component are regular hexagons, the number of the honeycomb aluminum holes is 3-6, and the honeycomb aluminum holes are along the axial direction of the tunnel.
In the honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, the strength model of the steel bar anchor steel bar adopts HRB400, and the arrangement interval is 0.4-0.6 m.
In the honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, the primary support is implemented in a shotcrete mode.
In the honeycomb annular yielding support structure for large deformation of tunnel surrounding rock, the secondary lining structure adopts a reinforced concrete structure.
The utility model has the following beneficial effects:
In the utility model, the honeycomb aluminum is a porous structure, and meanwhile, the aluminum has good ductility and certain strength, so that the honeycomb aluminum component has certain deformation and compression resistance. The large deformation energy is absorbed by crushing honeycomb aluminum, so that the deformation coordination capacity of the tunnel supporting structure is enhanced, the bearing capacity of the whole supporting structure is improved, and the safety of the tunnel lining structure under the large deformation of tunnel surrounding rock is ensured.
In the utility model, the surrounding rock is allowed to deform to a certain extent, and the deformation of the surrounding rock is controlled in a controllable range, so that the safety of the tunnel supporting structure under the condition of large deformation of the surrounding rock of the tunnel is ensured.
In summary, the honeycomb annular yielding supporting structure for the large deformation of the surrounding rock of the tunnel can ensure the safety of the supporting structure of the tunnel under the large deformation of the surrounding rock of the tunnel, has simple construction process and feasible technology.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic cross-sectional view of the structure of the present utility model.
FIG. 3 is a honeycomb aluminum yielding support structure unit for tunnel arch.
FIG. 4 is a honeycomb aluminum yielding support structure unit for two side walls of a tunnel.
FIG. 5 is a tunnel bottom honeycomb aluminum crush support structural unit.
In the figure: 1 is an aluminum plate member; 2 is a honeycomb aluminum member; 3 is a steel bar anchor; 4 is primary support; 5 is a secondary lining; and 6 is a tunnel.
Description of the embodiments
The utility model is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the present utility model comprises a steel anchor 3, an aluminum plate member 1, a honeycomb aluminum member 2, an initial support 4, and a secondary lining 5. The primary support 4 is applied after the tunnel 6 is excavated. The honeycomb aluminum holes of the honeycomb aluminum component 2 are arranged along the axial direction of the tunnel 6; the aluminum plate member 1 is arranged on the upper side and the lower side of the honeycomb aluminum member 2, and the honeycomb aluminum member 2 is clamped to form a honeycomb aluminum yielding support structure unit. The cellular aluminum yielding support structure unit is fixed on the primary support 4 by the steel bar anchor 3, and is sealed into a ring-shaped cellular aluminum ring-shaped yielding support structure; the secondary lining 5 is applied after the honeycomb aluminum annular yielding support structure.
Referring to fig. 1, 2 and 3, the construction steps of the present utility model are:
Step one: after the tunnel 6 is excavated, the primary support 4 is constructed by adopting a shotcrete mode.
Step two: the surface of the primary support 4 is cleaned. And (3) removing sharp objects on the surface of the primary support 4, and ensuring that the flatness of the primary support 4 meets D/L less than or equal to 1/6 (D is the depth of concave of two adjacent convex surfaces of the primary support surface, and L is the distance between two adjacent concave surfaces of the primary support surface).
Step three: the aluminum plate member 1 is arranged on the upper side and the lower side of the honeycomb aluminum member 2, and the honeycomb aluminum member is clamped to form a honeycomb aluminum yielding support structure unit; firstly, placing honeycomb aluminum yielding supporting structural units of tunnel arch parts, and fixing the honeycomb aluminum yielding supporting structural units by using steel bar anchors 3, wherein the arrangement interval is 0.4-0.6 m; then cellular aluminum yielding supporting structural units of two side walls of the tunnel are placed, the cellular aluminum yielding supporting structural units are fixed by steel bar anchors 3, and the arrangement interval is 0.4-0.6 m; finally, placing honeycomb aluminum yielding supporting structural units at the bottom of the tunnel, and fixing the structural units by using steel anchor nails 3, wherein the arrangement interval is 0.4-0.6 m; the honeycomb aluminum holes are formed into regular hexagons in a closed ring shape to form a honeycomb aluminum ring-shaped yielding support structure, the number of the honeycomb aluminum holes is 3-6, and the honeycomb aluminum holes are along the axial direction of the tunnel.
Step four: and (5) performing secondary lining, wherein the structure adopts a reinforced concrete structure.
Claims (6)
1. A honeycomb annular yielding support structure for tunnel surrounding rock is large in deformation is characterized by comprising an aluminum plate component (1), honeycomb aluminum components (2), reinforcing steel anchors (3), primary supports (4) and secondary linings (5), wherein the primary supports (4) are arranged after a tunnel is excavated, honeycomb aluminum holes of the honeycomb aluminum components (2) are formed along the axial direction of the tunnel, the aluminum plate component (1) is arranged on the upper side and the lower side of the honeycomb aluminum components (2), honeycomb aluminum yielding support structure units are formed by clamping the honeycomb aluminum components (2), the reinforcing steel anchors (3) fix the honeycomb aluminum yielding support structure units on the primary supports (4), the honeycomb aluminum yielding support structure units are sealed into an annular honeycomb aluminum annular yielding support structure, and the secondary linings (5) are arranged after the honeycomb aluminum annular yielding support structure.
2. The honeycomb annular yielding support structure for large deformation of tunnel surrounding rock according to claim 1, wherein the thickness of the honeycomb aluminum member (2) is 6-12 cm.
3. The honeycomb annular yielding support structure for the large deformation of the tunnel surrounding rock according to claim 2, wherein the honeycomb aluminum holes of the honeycomb aluminum component (2) are regular hexagons, and the number of the honeycomb aluminum holes is 3-6.
4. The honeycomb annular yielding support structure for large deformation of tunnel surrounding rock according to claim 1, wherein the reinforcing steel bar strength model of the reinforcing steel bar anchor (3) is HRB400, and the arrangement interval is 0.4-0.6 m.
5. The honeycomb annular yielding support structure for large deformation of tunnel surrounding rock according to claim 1, wherein the primary support (4) is made by adopting a shotcrete mode.
6. The honeycomb annular yielding support structure for large deformation of tunnel surrounding rock according to claim 1, wherein the secondary lining (5) is of a reinforced concrete structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322721672.9U CN221032661U (en) | 2023-10-11 | 2023-10-11 | A honeycomb annular lets and presses supporting construction for tunnel country rock large deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322721672.9U CN221032661U (en) | 2023-10-11 | 2023-10-11 | A honeycomb annular lets and presses supporting construction for tunnel country rock large deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221032661U true CN221032661U (en) | 2024-05-28 |
Family
ID=91135313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322721672.9U Active CN221032661U (en) | 2023-10-11 | 2023-10-11 | A honeycomb annular lets and presses supporting construction for tunnel country rock large deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221032661U (en) |
-
2023
- 2023-10-11 CN CN202322721672.9U patent/CN221032661U/en active Active
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