CN211008679U - Steel frame for tunnel preliminary bracing - Google Patents
Steel frame for tunnel preliminary bracing Download PDFInfo
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- CN211008679U CN211008679U CN201921995899.XU CN201921995899U CN211008679U CN 211008679 U CN211008679 U CN 211008679U CN 201921995899 U CN201921995899 U CN 201921995899U CN 211008679 U CN211008679 U CN 211008679U
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- steel frame
- connecting block
- tunnel
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Abstract
The utility model provides a tunnel preliminary bracing's steelframe relates to the tunnel construction field. Traditional steelframe adopts the joint steel sheet to pass through high strength bolt or butt welding and connects, however, this kind of steelframe connection structure, the steelframe deformability is poor, can not adapt to great country rock and warp. The utility model discloses a two at least load-bearing units, load-bearing unit is the arc structure, is equipped with the connecting block between two adjacent load-bearing units, connecting block and load-bearing unit sliding connection, the load-bearing unit side is equipped with the recess, the connecting block side correspondence be equipped with recess complex boss, be equipped with the cushion on the boss, but load-bearing unit elastic deformation is in order to adapt to the country rock and warp.
Description
Technical Field
Relate to tunnel construction field, concretely relates to steel frame that tunnel preliminary bracing was strutted.
Background
In the process of excavating the tunnel, in order to control the deformation of surrounding rocks and prevent the tunnel from collapsing, the construction of primary support must be carried out immediately after excavating, and the primary support is used as a part of a permanent bearing structure. The current tunnel primary support is mainly formed by combining a system anchor rod, sprayed concrete, a steel frame and the like.
Traditional steelframe adopts the joint steel sheet to pass through high strength bolt or butt welding and connects, however, this kind of steelframe connection structure, the steelframe deformability is poor, can not adapt to great country rock and warp, needs to solve urgently.
Disclosure of Invention
The utility model aims at developing a but elastic deformation is in order to adapt to the tunnel preliminary bracing's of country rock deformation steelframe.
The utility model discloses a following technical scheme realizes:
tunnel preliminary bracing's steelframe, including two at least load-carrying unit, load-carrying unit is the arc structure, is equipped with the connecting block between two adjacent load-carrying unit, connecting block and load-carrying unit sliding connection, load-carrying unit side are equipped with the recess, the connecting block side correspond be equipped with recess complex boss, be equipped with the cushion on the boss, but load-carrying unit elastic deformation is in order to adapt to the country rock and warp.
Further, the bearing unit is of a steel frame structure, a structural block is arranged at the end part, connected with the connecting block, of the bearing unit, the groove is formed in the structural block, and the structural block is connected with the connecting block in a sliding mode.
Furthermore, a cover plate is arranged on the top of the connecting block and covers the top surface of the structural block.
Further, the covering plate is an arc-shaped plate.
Further, a plurality of anchor rods are arranged on the top of the covering plate.
Furthermore, a guide plate is arranged at the bottom of the covering plate, and a guide groove matched with the guide plate is arranged at the corresponding position on the structure block.
Further, the width of the guide plate is the same as that of the structure block.
Furthermore, the side of the connecting block is provided with a slide rail perpendicular to the boss, and the side of the structure block is correspondingly provided with a slide block matched with the slide rail.
Further, the guide plate is perpendicular to the boss.
Further, the elastic pad is made of rubber.
The utility model has the advantages that:
the utility model discloses bearing unit receives can slide on the connecting block behind the great power, produces elastic deformation to the adaptation country rock is out of shape, and prevents the impurity infiltration in the environment and corrodes the cushion or influence bearing unit's slip with the deflector that the structure piece width is the same.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a view of the structure of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments may be modified in various different ways, without departing from the spirit or scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the embodiment discloses a steel frame for tunnel preliminary bracing, which includes at least two bearing units 1, each bearing unit 1 is arc-shaped and is matched with the shape of the inner wall of a tunnel, two adjacent bearing units 1 are provided with a connecting block 2 therebetween, the end of each bearing unit 1 is slidably connected with the side of the connecting block 2, the bottom of the side of the connecting block 2 is provided with a boss 5, the bottom of the end of each bearing unit 1 is correspondingly provided with a groove 10 matched with the boss 5, an elastic pad 7 is arranged between the boss 5 and the groove 10, and the elastic pad 7 is made of an elastic material.
Specifically, the bearing units 1 are of arc-shaped steel frame structures, the bearing units 1 are spliced into an arc-shaped steel frame, the connecting blocks 2 are arranged between every two adjacent bearing units 1 and connected in series, and the bearing units form an early-stage supporting steel frame through the series connection of the connecting blocks 2.
The two sides of the connecting block 2 are respectively provided with a sliding rail, the bottom of the two sides of the connecting block 2 is respectively provided with a boss 5, the connecting block 2 is in a convex shape, the sliding rail is perpendicular to the boss 5, the boss 5 of the connecting block 2 is provided with an elastic cushion 7, and the elastic cushion 7 is made of rubber materials.
The tip that load cell 1 and connecting block 2 are connected is equipped with structure piece 6, the upside of load cell 1 tip side is located to structure piece 6, 6 sides of structure piece be equipped with 2 side slide rail complex sliders of connecting block, make structure piece 6 can slide along the slide rail in connecting block 2 sides, the boss 5 of connecting block 2 is located to the bottom of structure piece 6 to contact with cushion 7.
The top of the connecting block 2 is also provided with a cover plate 4, the cover plate 4 is an arc-shaped plate, the radian of the cover plate 4 is the same as that of the bearing unit 1, the top of the covering plate 4 is also provided with a plurality of anchor rods 3, the bottom of the covering plate 4 is covered on the top surface of a structural block 6, before the bearing unit 1 is not elastically deformed, the bottom surface of the covering plate 4 is contacted with the top surface of the structural block 6, the bottom surfaces of the two sides of the covering plate 4 are respectively provided with a guide plate 8 vertical to the lug boss 5, the width of the guide plate 8 is the same as that of the structure block 6, a guide groove 9 for inserting the guide plate 8 is arranged at the corresponding position on the structure block 6, under the cooperation of deflector 8 and guide way 9, for the displacement direction of bearing unit 1 to deflector 8 prevents that impurity in the environment from permeating between connecting block 2 and structure piece 6, influences the slip of structure piece 6 and connecting block 2, also prevents simultaneously that impurity from permeating and make its corruption on the cushion 7.
Compare with traditional rigid structure's steelframe, the utility model discloses but elastic compression behind local atress to adapt to the deformation of great country rock, and the deflector 8 that sets up prevents that impurity from getting into in the connecting block 2 between the load-bearing unit 1.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (10)
1. The steel frame for tunnel preliminary bracing is characterized by comprising at least two bearing units, wherein each bearing unit is of an arc-shaped structure, a connecting block is arranged between every two adjacent bearing units, each connecting block is connected with the corresponding bearing unit in a sliding mode, a groove is formed in the side face of each bearing unit, a boss matched with the groove is correspondingly arranged on the side face of each connecting block, and an elastic cushion is arranged on each boss.
2. The steel frame for preliminary tunnel support according to claim 1, wherein the bearing unit is a steel frame structure, the end of the bearing unit connected with the connecting block is provided with a structural block, the groove is formed in the structural block, and the structural block is slidably connected with the connecting block.
3. The steel frame for tunnel preliminary support according to claim 2, wherein a covering plate is arranged on the top of the connecting block, and the covering plate covers the top surface of the structural block.
4. The steel frame for tunnel preliminary support of claim 3, wherein the covering plate is an arc plate.
5. The steel frame for tunnel preliminary support according to claim 4, wherein a plurality of anchor rods are provided on top of the covering plate.
6. The steel frame for preliminary tunnel support according to claim 5, wherein the covering plate is provided with a guide plate at the bottom, and the structure block is provided with a guide groove at a corresponding position for matching with the guide plate.
7. The steel frame for tunnel preliminary support according to claim 6, wherein the guide plate has the same width as the structural block.
8. The steel frame for the preliminary tunnel support according to claim 7, wherein the side surface of the connecting block is provided with a sliding rail perpendicular to the boss, and the side surface of the structural block is correspondingly provided with a sliding block matched with the sliding rail.
9. The steel frame for tunnel preliminary support according to claim 8, wherein the guide plate is perpendicular to the boss.
10. The steel frame for tunnel preliminary support according to claim 9, wherein the elastic pad is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921995899.XU CN211008679U (en) | 2019-11-19 | 2019-11-19 | Steel frame for tunnel preliminary bracing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921995899.XU CN211008679U (en) | 2019-11-19 | 2019-11-19 | Steel frame for tunnel preliminary bracing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211008679U true CN211008679U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921995899.XU Active CN211008679U (en) | 2019-11-19 | 2019-11-19 | Steel frame for tunnel preliminary bracing |
Country Status (1)
| Country | Link |
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| CN (1) | CN211008679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482667A (en) * | 2021-08-19 | 2021-10-08 | 重庆交通大学 | Tunnel steel frame connecting device adapting to two-way deformation |
-
2019
- 2019-11-19 CN CN201921995899.XU patent/CN211008679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482667A (en) * | 2021-08-19 | 2021-10-08 | 重庆交通大学 | Tunnel steel frame connecting device adapting to two-way deformation |
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