CN212027816U - Assembled steel arch frame for tunnel support - Google Patents
Assembled steel arch frame for tunnel support Download PDFInfo
- Publication number
- CN212027816U CN212027816U CN202020694228.6U CN202020694228U CN212027816U CN 212027816 U CN212027816 U CN 212027816U CN 202020694228 U CN202020694228 U CN 202020694228U CN 212027816 U CN212027816 U CN 212027816U
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- Prior art keywords
- hinge
- arch
- hinge plate
- bow member
- plate
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- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 238000003466 welding Methods 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 1
- 239000013585 weight reducing agent Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 5
- 101150097977 arch-1 gene Proteins 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model belongs to the technical field of the steel bow member, a tunnel is strutted and is used assembled steel bow member is disclosed. The main technical characteristics are as follows: the device comprises an upper arch, a middle arch and a lower arch, wherein a first hinge is arranged between the upper arch and the middle arch; a second hinge is arranged between the middle arch frame and the lower arch frame, and a connecting chassis is arranged at the lower end of the lower arch frame; and the first hinge and the second hinge are respectively provided with an I-shaped fixing groove and a bolt hole. When welding hinge and corresponding bow member, insert the fixed slot that corresponds with the tip of corresponding bow member, it is just right directly to weld hinge and corresponding bow member, make the junction of each section bow member realize fine alignment, the precision is good, and machining efficiency is high moreover, need not align repeatedly, the area of contact increase of hinge and corresponding bow member, and the bow member card is in corresponding fixed slot moreover, the increase of the anti horizontal shearing force of bow member, make the whole weight reduction of bow member, and the cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the tunnel is strutted the steel bow member, especially, relate to a tunnel is strutted and is used assembled steel bow member.
Background
At present, a composite lining structure is commonly adopted in domestic tunnel engineering, a tunnel steel arch is a component of primary tunnel support, and the primary tunnel steel arch mainly plays a role in resisting primary convergence deformation of surrounding rocks caused by excavation disturbance. Normally, steel arch frames are transported to a construction site in a split mode, workers manually install the steel arch frames on the excavated tunnel face, locking anchor pipes are adopted to fix the steel arch frames at arch feet, and U-shaped steel ribs are adopted to weld the steel arch frames and the locking anchor pipes. The above method has the following disadvantages: firstly, the steel arch frames are manually transported to the excavated tunnel face in a split mode for installation, so that the installation space is small, the installation difficulty is high, and the accident rate is increased due to the fact that rock fall and the like easily occur on the tunnel face; secondly, the separated sheets are connected by a flange plate, each steel arch frame weighs hundreds of kilograms, and the steel arch frames are not easy to align in a narrow space, so that the labor intensity is increased; thirdly, because of the influence of narrow operation space, the weight of the steel arch centering installed each time reaches hundreds of kilograms, the steel arch centering is difficult to lift to be closely attached to the surrounding rocks of the vault of the tunnel only by manpower, and a larger gap exists between the surrounding rocks of the vault and the top edge of the steel arch centering; the local part of the arch part can be out of hollow when the concrete is sprayed again after the steel arch frame is erected. In this case, the steel arch will not function to resist convergence and deformation of the surrounding rock of the arch part within a certain deformation range.
In order to overcome the defects, later people adopt a hinge connection mode between an upper arch center and a middle arch center and between the middle arch center and a lower arch center, four bolt holes are formed in hinges, the arch center is folded during transportation, then the arch center is unfolded after the arch center arrives, and two movable hinge plates are fixed through bolts. However, the above method has the following disadvantages: firstly, when the hinge is welded on the arch centering at two sides, the position welding of the hinge plates is not accurate enough, so that the connection parts of the arch centering can not be aligned, the strength of the arch centering bearing the pressure is reduced, in addition, in order to align the two hinge plates, the time and the labor are wasted during the welding, and the welding efficiency is low; secondly, the hinge plate and the arch center are welded together through the end face of the arch center and the hinge plate, so that the welding strength is low and the anti-shearing capability is poor; thirdly, the hinge plate is heavy and high in cost.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is exactly to provide the tunnel strut with assembled steel bow member that welding quality is good, production efficiency is high, whole light in weight.
In order to solve the above problem, the utility model adopts the technical scheme that: including being located the last bow member at middle part, being located go up two well bow members at bow member both ends and being located the lower bow member at well bow member both ends, its characterized in that: a first hinge is arranged between the upper arch and the middle arch; a second hinge is arranged between the middle arch and the lower arch, and a connecting chassis is arranged at the lower end of the lower arch; the first hinge comprises a first hinge plate, a second hinge plate and a first hinge shaft for connecting the first hinge plate and the second hinge plate, and the first hinge plate and the second hinge plate are provided with an I-shaped first fixing groove and a first bolt hole; the second hinge comprises a third hinge plate, a fourth hinge plate and a second hinge shaft for connecting the third hinge plate and the fourth hinge plate, the third hinge plate and the fourth hinge plate are provided with an I-shaped second fixing groove and a second bolt hole, and the third hinge plate is provided with a first fin with a first anchor rod guiding fixing sleeve; and a second fin with a second anchor rod guide sleeve is arranged on the connecting chassis.
The additional technical characteristics are as follows:
the front ends of the first guide sleeves of the first fins and the front ends of the second guide sleeves of the second fins are inclined planes;
the first bolt holes are two, and the second bolt holes are two.
The utility model provides an assembled steel bow member for tunnel supporting compares with prior art, has following advantage: the first hinge is arranged between the upper arch and the middle arch, and the first hinge is arranged between the upper arch and the middle arch; a second hinge is arranged between the middle arch and the lower arch, and a connecting chassis is arranged at the lower end of the lower arch; the first hinge comprises a first hinge plate, a second hinge plate and a first hinge shaft for connecting the first hinge plate and the second hinge plate, and the first hinge plate and the second hinge plate are provided with an I-shaped first fixing groove and a first bolt hole; the second hinge comprises a third hinge plate, a fourth hinge plate and a second hinge shaft for connecting the third hinge plate and the fourth hinge plate, the third hinge plate and the fourth hinge plate are provided with an I-shaped second fixing groove and a second bolt hole, and the third hinge plate is provided with a first fin with a first anchor rod guiding fixing sleeve; the connecting chassis is provided with a second fin with a second anchor rod guide sleeve, when the first hinge plate, the second hinge plate, the third hinge plate and the fourth hinge plate are welded with corresponding arches, the end parts of the corresponding arches are inserted into the corresponding first fixing groove and the second fixing groove, and the first hinge plate, the second hinge plate, the third hinge plate and the fourth hinge plate are directly welded with the corresponding arches, so that the connection parts of all the arch sections can be well aligned, the precision is good, the processing efficiency is high, repeated alignment is not needed, the contact area of the first hinge plate, the second hinge plate, the third hinge plate and the fourth hinge plate with the corresponding arches is increased, the arches are clamped in the corresponding first fixing groove and the second fixing groove, the transverse shearing force resistance of the arches is increased, and the first hinge plate or the second hinge plate or the third hinge plate or the fourth hinge plate is provided with the first fixing groove or the second fixing groove, the whole weight of the arch center is reduced, and the cost is reduced; secondly, the front ends of the first guide sleeves of the first fins and the front ends of the second guide sleeves of the second fins are inclined planes, so that the anchor rod and the guide sleeves can be conveniently welded after the anchor rod is inserted, and the construction is more convenient; and thirdly, because the first bolt holes are two, the second bolt holes are two, the two hinge plates of the first hinge and the second hinge are connected through two bolts, the whole weight is reduced, and the production cost is further reduced.
Drawings
Fig. 1 is a schematic structural view of the assembled steel arch for tunnel support of the present invention;
FIG. 2 is a schematic structural view of a folded assembled steel arch for tunnel support;
FIG. 3 is a schematic view of a first hinge;
FIG. 4 is a top view of the first hinge;
FIG. 5 is a schematic structural view of a first hinge plate;
FIG. 6 is a schematic structural view of a second hinge plate;
FIG. 7 is a schematic view of a second hinge;
FIG. 8 is a top view of the second hinge;
FIG. 9 is a schematic structural view of a third hinge plate;
FIG. 10 is a schematic structural view of a fourth hinge plate;
fig. 11 is a schematic structural view of the connection chassis.
Detailed Description
The structure and the operation principle of the assembled steel arch for tunnel supporting according to the present invention will be described in detail with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1 and 2, the assembled steel arch for tunnel support of the present invention is schematically shown in the structure, and the assembled steel arch for tunnel support of the present invention comprises an upper arch 1 located in the middle, two middle arches 2 located at two ends of the upper arch 1, and a lower arch 3 located at two ends of the middle arch 2, wherein a first hinge 4 is provided between the upper arch 1 and the middle arch 2; a second hinge 5 is arranged between the middle arch frame 2 and the lower arch frame 3, and a connecting chassis 6 is arranged at the lower end of the lower arch frame 3; as shown in fig. 3, 4, 5 and 6, the first hinge 4 includes first and second hinge plates 41 and 42 and a first hinge shaft 43 connecting the first and second hinge plates 41 and 42, and the first and second hinge plates 41 and 42 are provided with first fixing grooves 44 and first bolt holes 45 in the shape of "i" shapes. As shown in fig. 7, 8, 9 and 10, the second hinge 5 includes a third hinge plate 51, a fourth hinge plate 52 and a second hinge shaft 53 connecting the third hinge plate 51 and the fourth hinge plate 52, the third hinge plate 51 and the fourth hinge plate 52 are provided with a second fixing groove 54 shaped like an "i" and a second bolt hole 55, and the third hinge plate 51 is provided with a first fin 57 having a first anchor rod guide fixing sleeve 56. As shown in fig. 11, a second fin 62 with a second anchor guide 61 is provided on the connection base plate 6.
When the first hinge plate 41, the second hinge plate 42, the third hinge plate 51 and the fourth hinge plate 52 are welded with the corresponding arches, the end parts of the corresponding arches are inserted into the corresponding first fixing groove 44 and the corresponding second fixing groove 54, the first hinge plate 41, the second hinge plate 42, the third hinge plate 51 and the fourth hinge plate 52 are directly welded with the corresponding arches, so that the joints of the arch sections are well aligned, the precision is good, the processing efficiency is high, repeated alignment is not needed, the contact area of the first hinge plate, the second hinge plate, the third hinge plate and the fourth hinge plate with the corresponding arches is increased, the arches are clamped in the corresponding first fixing groove 44 and the corresponding second fixing groove 54, the transverse shearing resistance of the arches is increased, and the first fixing groove or the second fixing groove is arranged on the first hinge plate 41, the second hinge plate 42, the third hinge plate 51 and the fourth hinge plate 52, the whole weight of the arch center is reduced, and the cost is reduced.
As shown in fig. 10 and 11, the front ends of the first guide sleeves 56 of the first fins 57 and the front ends of the second guide sleeves 61 of the second fins 62 are inclined surfaces, so that after the anchor rod is inserted, the welding between the anchor rod and the guide sleeves is facilitated, and the construction is more convenient.
The utility model discloses a protection scope not only limits in above-mentioned embodiment, as long as the structure with the utility model discloses tunnel support is with assembled steel bow member structure the same or similar just falling the utility model discloses the scope of protection.
Claims (3)
1. Assembled steel bow member for tunnel supporting, including the last bow member that is located the middle part, be located go up two well bow members at bow member both ends and be located the lower bow member at well bow member both ends, its characterized in that: a first hinge is arranged between the upper arch and the middle arch; a second hinge is arranged between the middle arch and the lower arch, and a connecting chassis is arranged at the lower end of the lower arch;
the first hinge comprises a first hinge plate, a second hinge plate and a first hinge shaft for connecting the first hinge plate and the second hinge plate, and the first hinge plate and the second hinge plate are provided with an I-shaped first fixing groove and a first bolt hole;
the second hinge comprises a third hinge plate, a fourth hinge plate and a second hinge shaft for connecting the third hinge plate and the fourth hinge plate, the third hinge plate and the fourth hinge plate are provided with an I-shaped second fixing groove and a second bolt hole, and the third hinge plate is provided with a first fin with a first anchor rod guiding fixing sleeve;
and a second fin with a second anchor rod guide sleeve is arranged on the connecting chassis.
2. The fabricated steel arch for tunnel support according to claim 1, wherein: the front ends of the first guide sleeves of the first fins and the front ends of the second guide sleeves of the second fins are inclined planes.
3. The fabricated steel arch for tunnel support according to claim 1, wherein: the first bolt holes are two, and the second bolt holes are two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694228.6U CN212027816U (en) | 2020-04-30 | 2020-04-30 | Assembled steel arch frame for tunnel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694228.6U CN212027816U (en) | 2020-04-30 | 2020-04-30 | Assembled steel arch frame for tunnel support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212027816U true CN212027816U (en) | 2020-11-27 |
Family
ID=73497190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020694228.6U Expired - Fee Related CN212027816U (en) | 2020-04-30 | 2020-04-30 | Assembled steel arch frame for tunnel support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212027816U (en) |
-
2020
- 2020-04-30 CN CN202020694228.6U patent/CN212027816U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |