CN220929398U - Protect arch mounting structure suitable for tunnel is consolidated temporarily - Google Patents
Protect arch mounting structure suitable for tunnel is consolidated temporarily Download PDFInfo
- Publication number
- CN220929398U CN220929398U CN202322646724.0U CN202322646724U CN220929398U CN 220929398 U CN220929398 U CN 220929398U CN 202322646724 U CN202322646724 U CN 202322646724U CN 220929398 U CN220929398 U CN 220929398U
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- CN
- China
- Prior art keywords
- precast concrete
- arch
- connecting plate
- concrete cushion
- fixed
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Links
- 239000011178 precast concrete Substances 0.000 claims abstract description 17
- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000001012 protector Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model belongs to the technical field of tunnel construction, and particularly relates to a protective arch mounting structure suitable for temporary reinforcement of a tunnel, which comprises a support connecting plate, two vertical supporting beams symmetrically arranged on the top surface of the support connecting plate, a jacking cross beam fixed on the top of the vertical supporting beams, wherein the bottom surface of the jacking cross beam is tightly pressed on the top surface of a jacking rod of a hydraulic jack, and the bottom of the hydraulic jack is fixed on a precast concrete cushion block; the precast concrete cushion is characterized in that a drop frame is arranged between the precast concrete cushion and the support connecting plate, the top of the drop frame and the bottom of the support connecting plate and/or the vertical support beam are fixed into a whole through bolts, and the drop frame is tightly abutted to the top plate surface of the precast concrete cushion. Due to the structure, the protecting arch can be closely attached to the primary supporting surface, and can form a supporting system with the protecting arch integrally after being applied, thereby controlling the deformation of surrounding rock and preventing tunnel intrusion and even collapse accidents.
Description
Technical Field
The utility model belongs to the technical field of tunnel construction, and provides an arch protection installation structure suitable for temporary reinforcement of a tunnel, wherein an arch protection can be closely attached to a primary support surface, a support system can be integrally formed with the arch protection after construction, surrounding rock deformation is controlled, and tunnel intrusion and even collapse accidents are prevented.
Background
In the construction of complex geological tunnels such as broken surrounding rock and soft rock, vault settlement data mutation often occurs due to geological reasons, temporary supporting measures are needed to be applied in emergency to control deformation of the surrounding rock, instability and collapse of a tunnel supporting system are prevented, and a common supporting mode is arch protection of an arch frame at the outer side Shi Zuogang of an initial supporting.
In order to control the further deformation of surrounding rock, the arch guard is generally manufactured by adopting I-steel with larger specification, the weight is larger, the arch guard is difficult to be closely attached to the primary support surface in the process of construction, an effective support system cannot be timely formed, the further deformation of the surrounding rock is controlled, meanwhile, the stress of the arch guard is larger after the primary support is settled, and the dismantling process is difficult.
Disclosure of utility model
Therefore, the utility model aims to provide the arch protection installation structure suitable for temporary reinforcement of the tunnel, wherein the arch protection can be closely attached to the primary support surface, and can form a supporting system with the arch protection after construction, thereby controlling surrounding rock deformation and preventing tunnel intrusion and even collapse accidents.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a protective arch mounting structure suitable for temporary reinforcement of a tunnel, wherein: the hydraulic jack comprises a support connecting plate, two vertical supporting beams symmetrically arranged on the top plate surface of the support connecting plate, a jacking cross beam fixed on the top of the vertical supporting beams, wherein the bottom plate surface of the jacking cross beam is tightly pressed on the top end surface of a jacking rod of the hydraulic jack, and the bottom of the hydraulic jack is fixed on a precast concrete cushion block;
The precast concrete cushion is characterized in that a drop frame is arranged between the precast concrete cushion and the support connecting plate, the top of the drop frame and the bottom of the support connecting plate and/or the vertical support beam are fixed into a whole through bolts, and the drop frame is tightly abutted to the top plate surface of the precast concrete cushion.
The beneficial effects of the utility model are as follows: the hydraulic jack is adopted to prop the tunnel protection arch, so that the protection arch is closely attached to the primary supporting surface of the tunnel, the settlement abrupt change primary support can be timely supported, the settlement deformation is controlled, the occurrence of tunnel intrusion and even collapse accidents is prevented, and the settlement is stabilized before secondary lining is applied, and the protection arch is conveniently detached by adopting the drop frame, so that the detachment risk is reduced.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural view of the present utility model in use.
Reference numerals: 1. a support connection plate; 2. a vertical support beam; 3. jacking the cross beam; 4. a hydraulic jack; 5. a lifting rod; 6. prefabricating concrete cushion blocks; 7. a drop frame is unloaded; 8. a bolt; 9. a top plate; 10. a bottom plate; 11. reinforcing ribs; 12. and (5) protecting arches.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
As shown in fig. 1-2, the arch protection installation structure suitable for temporary reinforcement of tunnels comprises a support connection plate 1, two vertical support beams 2 symmetrically arranged on the top plate surface of the support connection plate 1, a lifting beam 3 fixed on the top of the vertical support beams 2, the bottom plate surface of the lifting beam 3 is tightly pressed on the top end surface of a lifting rod 5 of a hydraulic jack 4, and the bottom of the hydraulic jack 4 is fixed on a precast concrete cushion block 6;
A drop frame 7 is arranged between the precast concrete cushion 6 and the support connecting plate 1, the top of the drop frame 7 and the bottom of the support connecting plate 1 and/or the vertical support beam 2 are fixed into a whole through bolts 8, and the drop frame 7 is tightly abutted to the top plate surface of the precast concrete cushion 6. In this embodiment, the space enclosed by the support connection plate 1 and the two vertical support beams 2 is an arch protection installation part.
To facilitate the connection of the drop frame 7 to the support connection plate 1 and/or the vertical support beam 2, in the above described embodiments, it is preferred that: the top end of the drop frame 7 is fixed with a top plate 9 which is integrated with the drop frame. In this embodiment, the top plate 9 is fixed to the bottom of the support connection plate 1 and/or the vertical support beam 2 by bolts 8.
In order to ensure the connection accuracy between the drop frame 7 and the precast concrete cushion 6, in the above embodiment, it is preferable that: the bottom end of the drop frame 7 is fixed with at least one bottom plate 10 which is integrated with the drop frame. In this embodiment, to ensure the stress performance of the drop frame 7, a plurality of steel plates of different thicknesses may be used as the bottom plate 10 according to actual needs. The arrangement of the bottom plate 10 effectively promotes the bonding of the arch protector with the primary support surface after the arch protector is applied. In order to ensure the stressing of the lifting beam 3, in the above embodiment, it is preferable that: a reinforcing rib 11 is arranged between the vertical supporting beam 2 and the jacking cross beam 3 at the top of the vertical supporting beam.
In the above embodiment, all the components are commercially available products. The unloading frame 7 can be processed on site according to the actual height, and is directly formed by welding and processing channel steel and steel plates on a tunnel site.
The working process of the utility model is as follows:
The two ends of the protecting arch 12 are respectively put into the two protecting arch installation parts of the structure, so that the bottom end of the protecting arch 12 is tightly abutted against the top plate surface of the supporting connecting plate 1. The arrangement of the precast concrete cushion 6 can effectively ensure the leveling of the supporting point when the protecting arch 12 is lifted, ensure that the protecting arch 12 can be closely attached to the primary supporting surface after being applied, and can be directly applied to the protecting arch 12 once surrounding rock deforms severely. The hydraulic jack 4 is adopted to slowly and synchronously prop up the lifting cross beam 3 for lifting the protecting arch 12, the lifting cross beam 3 drives the protecting arch 12 to lift until the protecting arch 12 is closely attached to the primary supporting surface, and then the top of the unloading frame 7 and the bottom of the supporting connecting plate 1 and/or the vertical supporting beam 2 are fixed into a whole through the bolts 8, so that the hydraulic jack 4 is removed after the unloading frame 7 supports the protecting arch 12. Before the surrounding rock subsides and is stably applied as a secondary lining, an arch frame is adopted to install a trolley or an operation platform to temporarily support the protecting arch 12, and the protecting arch 12 is removed after the unloading frame 7, the vertical supporting beam 2, the jacking cross beam 3 and the supporting connecting plate 1 are removed to apply as the secondary lining. The whole process effectively ensures that the protecting arch 12 can be closely attached to the primary supporting surface, and can form a supporting system with the protecting arch 12 integrally after construction, thereby controlling surrounding rock deformation and preventing occurrence of limit invasion and even tunnel collapse accidents.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.
Claims (4)
1. Arch protection mounting structure suitable for tunnel is consolidated temporarily, its characterized in that: the hydraulic lifting device comprises a support connecting plate (1), two vertical supporting beams (2) symmetrically arranged on the top surface of the support connecting plate (1), a lifting beam (3) fixed at the top of the vertical supporting beams (2), the bottom plate surface of the lifting beam (3) is tightly pressed on the top end surface of a lifting rod (5) of a hydraulic jack (4), and the bottom of the hydraulic jack (4) is fixed on a precast concrete cushion block (6);
The precast concrete cushion block is characterized in that a drop frame (7) is arranged between the precast concrete cushion block (6) and the support connecting plate (1), the top of the drop frame (7) and the bottom of the support connecting plate (1) and/or the vertical support beam (2) are fixed into a whole through bolts (8), and the drop frame (7) is tightly abutted to the top plate surface of the precast concrete cushion block (6).
2. The arch protection mounting structure for temporary tunnel reinforcement according to claim 1, wherein: the top end of the unloading frame (7) is fixed with a top plate (9) which is integrated with the unloading frame.
3. A retaining arch mounting structure for temporary reinforcement of tunnels according to claim 1 or 2, wherein: the bottom end of the unloading frame (7) is fixed with at least one bottom plate (10) which is integrated with the unloading frame.
4. The arch protection mounting structure for temporary tunnel reinforcement according to claim 1, wherein: a reinforcing rib (11) is arranged between the vertical supporting beam (2) and the jacking cross beam (3) at the top of the vertical supporting beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322646724.0U CN220929398U (en) | 2023-09-28 | 2023-09-28 | Protect arch mounting structure suitable for tunnel is consolidated temporarily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322646724.0U CN220929398U (en) | 2023-09-28 | 2023-09-28 | Protect arch mounting structure suitable for tunnel is consolidated temporarily |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220929398U true CN220929398U (en) | 2024-05-10 |
Family
ID=90934498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322646724.0U Active CN220929398U (en) | 2023-09-28 | 2023-09-28 | Protect arch mounting structure suitable for tunnel is consolidated temporarily |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220929398U (en) |
-
2023
- 2023-09-28 CN CN202322646724.0U patent/CN220929398U/en active Active
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