CN209354163U - A kind of tunnel steel arch frame support device - Google Patents
A kind of tunnel steel arch frame support device Download PDFInfo
- Publication number
- CN209354163U CN209354163U CN201821615809.5U CN201821615809U CN209354163U CN 209354163 U CN209354163 U CN 209354163U CN 201821615809 U CN201821615809 U CN 201821615809U CN 209354163 U CN209354163 U CN 209354163U
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- steel arch
- shelf
- steel
- tunnel
- hound
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Abstract
The utility model discloses a kind of tunnel steel arch frame support device, including steel arch-shelf, the two sides of the steel arch-shelf are respectively welded a hound, it is inclined to set between the hound and the steel arch-shelf, the lower end of the hound is welded with support plate, and the other end of the support plate is welded and fixed by welding set with the steel arch-shelf.The method that the utility model provides the first branch steel arch-shelf stress in stable tunnel can increase steel arch support forced area in soft rock and soil property surrounding rock tunnel, improve the integrated carrying ability of steel arch-shelf.In addition, the utility model has the advantages of simple structure, and it is easy to maintain, there is preferable promotion prospect.
Description
Technical field
The utility model relates to the preliminary bracing device of constructing tunnel, specially a kind of tunnel steel arch frame support device.
Background technique
During constructing tunnel, first force structure of the first branch steel arch-shelf as tunnel, main function has: 1, spraying
Concrete is penetrated to play a role front support country rock；2, reinforcement is carried out to gunite concrete；3, as the fulcrum of advance support；4 and anchor
Bar, gunite concrete play the effect of preliminary bracing jointly, but in soft rock and soil property surrounding rock tunnel, since rock mass carries energy
The reasons such as power difference and arch support forced area are small, lead to just branch steel arch-shelf generation sedimentation or deformation, jeopardize safety for tunnel engineering.
Currently, the arch springing of steel arch-shelf mainly uses prefabricated section to carry out pad paving in constructing tunnel, prefabricated section is since area is small, by force
It spends low, is difficult to bear the load of steel arch-shelf in soft rock and soil property surrounding rock tunnel, and crushing and sedimentation occurs, lead to the steady of steel arch-shelf
Qualitative reduction, jeopardizes safety for tunnel engineering.It is therefore necessary to research and develop novel steel arch-shelf support system, it can not only guarantee steel arch-shelf
Stability under loading, and can be avoided steel arch-shelf because rock mass in tunnel intensity is not high occur settle and deform the problems such as.
Utility model content
In view of above-mentioned background technique, it is whole that the utility model provides a kind of tunnel steel arch frame support device guarantee steel arch-shelf
The stability under loading of body.
A kind of tunnel steel arch frame support device, including steel arch-shelf, the two sides of the steel arch-shelf are respectively welded a diagonal brace
Bar is inclined to set between the hound and the steel arch-shelf, and the lower end of the hound is welded with support plate, the support
The other end of plate is welded and fixed by welding set with the steel arch-shelf.
The steel arch-shelf is annularly formed by the connection of several segments I-steel, and the both ends of each I-steel are respectively welded
Junction steel plate offers several screw holes on the junction steel plate, and two sections of adjacent I-steel carry out segmentation connection by bolt.
Angle between the hound and the steel arch-shelf controls within the scope of 25 °~30 °, to guarantee maximum weighted.
The support plate uses steel plate, and the length is 60~100cm, and width is 30~50cm, with a thickness of 10~20cm.
The beneficial effects of the utility model are:
1, the utility model is applicable to the support of the first branch steel arch-shelf of soft rock and soil property surrounding rock tunnel, simple and easy to operate,
The load of tunnel arch country rock effectively can be passed into arch springing country rock by the hound and support plate of two sides, guarantee steel arch-shelf
Stability under loading.
2, structure is simple, easy to maintain, there is preferable promotion prospect.
Detailed description of the invention
Fig. 1 is the structural section schematic diagram of the utility model；
Fig. 2 is the connection structure enlarged diagram between the hound, support plate and the steel arch-shelf of the utility model；
Fig. 3 is the structural front view of the I-steel of the utility model；
Fig. 4 is the attachment structure schematic diagram between the I-steel of the utility model.
Specific embodiment
The utility model is further detailed with reference to the accompanying drawing.
A kind of tunnel steel arch frame support device, as depicted in figs. 1 and 2, including steel arch-shelf, the two sides difference of the steel arch-shelf
Be welded with a hound 4 by welding steel 3, hound 4 uses I18 I-steel, the hound 4 and the steel arch-shelf it
Between be obliquely installed in 25 °~30 °, the lower end of the hound 4 is welded with support plate 6, and the other end of the support plate 6 passes through weldering
Female connector 5 is welded and fixed with the steel arch-shelf.The stress surface of branch steel arch-shelf at the beginning of increasing tunnel by hound 4 and supporting steel plate
Tunnel arch pressure from surrounding rock is passed to arch springing country rock as far as possible by product, ensures the stability under loading of steel arch-shelf entirety.
As shown in Figure 3 and Figure 4, the steel arch-shelf connects formation annular in shape, each I-steel by several segments I-steel 1
1 both ends are respectively welded junction steel plate 2, and several screw holes 7 are offered on the junction steel plate 2, and two sections of adjacent I-steel are logical
It crosses bolt 8 and carries out segmentation with nut 9 and connect.
Wherein, the support plate 6 uses steel plate, and the length is 60~100cm (preferably 80cm), width is 30~50cm
(preferably 30cm), with a thickness of 10~20cm (preferably 15cm).
The utility model provides the method for the first branch steel arch-shelf stress in stable tunnel, in soft rock and soil property surrounding rock tunnel
In, steel arch support forced area can be increased, improve the integrated carrying ability of steel arch-shelf.In addition, the structure of the utility model
Simply, easy to maintain, there is preferable promotion prospect.
As described above, the only preferred embodiment of the utility model, when cannot be limited with this utility model implementation range,
I.e. generally according to simple equivalent changes and modifications made by the utility model claim and novel description, it is new all still to belong to this
In the range of type patent covers.
Claims (4)
1. a kind of tunnel steel arch frame support device, which is characterized in that including steel arch-shelf, the two sides of the steel arch-shelf are respectively welded
A piece hound, is inclined to set between the hound and the steel arch-shelf, and the lower end of the hound is welded with support plate,
The other end of the support plate is welded and fixed by welding set with the steel arch-shelf.
2. a kind of tunnel steel arch frame support device according to claim 1, which is characterized in that the steel arch-shelf is by several segments
I-steel connection is annular in shape to be formed, and the both ends of each I-steel are respectively welded junction steel plate, open on the junction steel plate
Equipped with several screw holes, two sections of adjacent I-steel carry out segmentation connection by bolt.
3. a kind of tunnel steel arch frame support device according to claim 1, which is characterized in that the hound and the steel
Angle between arch is 25 °~30 °.
4. a kind of tunnel steel arch frame support device according to claim 1, which is characterized in that the support plate uses steel
Plate, length are 60~100cm, and width is 30~50cm, with a thickness of 10~20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615809.5U CN209354163U (en) | 2018-09-30 | 2018-09-30 | A kind of tunnel steel arch frame support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615809.5U CN209354163U (en) | 2018-09-30 | 2018-09-30 | A kind of tunnel steel arch frame support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354163U true CN209354163U (en) | 2019-09-06 |
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ID=67781719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821615809.5U Active CN209354163U (en) | 2018-09-30 | 2018-09-30 | A kind of tunnel steel arch frame support device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983492A (en) * | 2021-04-21 | 2021-06-18 | 中国一冶集团有限公司 | Tunnel primary support steel arch frame vertical fixing structure and construction method thereof |
-
2018
- 2018-09-30 CN CN201821615809.5U patent/CN209354163U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983492A (en) * | 2021-04-21 | 2021-06-18 | 中国一冶集团有限公司 | Tunnel primary support steel arch frame vertical fixing structure and construction method thereof |
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