CN204663551U - For the annular girder steel arch-shelf of tunnel support - Google Patents
For the annular girder steel arch-shelf of tunnel support Download PDFInfo
- Publication number
- CN204663551U CN204663551U CN201520369326.1U CN201520369326U CN204663551U CN 204663551 U CN204663551 U CN 204663551U CN 201520369326 U CN201520369326 U CN 201520369326U CN 204663551 U CN204663551 U CN 204663551U
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- annular girder
- snap ring
- arc unit
- shelf
- steel arch
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Abstract
For an annular girder steel arch-shelf for tunnel support, comprise annular girder, annular girder overlaps Connecting groups by multiple arc unit beam and synthesizes circular; Two arc unit beams are that embedded occlusion overlap joint connects, joint is provided with two groups of fixtures that snap ring and lower snap ring are combined into, upper snap ring and lower snap ring are by bolt and fastening nuts, the vertical cross-section of described ring arc unit beam is inverted U-shaped, the oriented edge of a wing of turning up bottom ring arc unit beam two side.The annular girder steel arch-shelf for tunnel support that the utility model provides, annular girder overlaps Connecting groups by multiple arc unit beam and synthesizes circular, joint adopts two groups of fixtures to fix, conventional steel bow member can be avoided need to increase joint connect and the problem that installation difficulty is large, efficiency of construction is low that causes, reduce cost to drop into, accelerate construction speed.
Description
Technical field
The utility model relates to tunnel support construction field, especially a kind of annular girder steel arch-shelf for tunnel support.
Background technology
In tunnel support engineering, usual employing steel arch-shelf is for excavating the supporting of structural plane, steel arch-shelf generally adopts i iron to make, the lengthening of steel arch-shelf is generally welding or Flange joint, this kind of mode exists increases the problems such as joint member, in-site installation difficulty are comparatively large, efficiency of construction is low, and especially in circular tunnel construction, the problems referred to above are more outstanding.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of annular girder steel arch-shelf for tunnel support, the problems such as conventional steel bow member increases joint member, installation difficulty is large, efficiency of construction is low can be solved, and apparatus structure design is ingenious, installs simple and convenient, efficient quick.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of annular girder steel arch-shelf for tunnel support, comprises annular girder, and annular girder overlaps Connecting groups by multiple arc unit beam and synthesizes circular; Two arc unit beams are that embedded occlusion overlap joint connects, and joint is provided with two groups of fixtures that snap ring and lower snap ring are combined into, and upper snap ring and lower snap ring are by bolt and fastening nuts.
The vertical cross-section of described ring arc unit beam is inverted U-shaped.
The oriented edge of a wing of turning up bottom described arc unit beam two side.
The annular girder steel arch-shelf for tunnel support that the utility model provides, annular girder overlaps Connecting groups by multiple arc unit beam and synthesizes circular, joint adopts two groups of fixtures to fix, conventional steel bow member can be avoided need to increase joint connect and the problem that installation difficulty is large, efficiency of construction is low that causes, reduce cost to drop into, accelerate construction speed.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the elevation that the utility model is bowed.
Fig. 2 is the A place drawing of Fig. 1.
Fig. 3 is the vertical sectional view of annular girder.
In figure: annular girder 1, upper snap ring 2, lower snap ring 3, bolt 4, nut 5, the edge of a wing 6, arc unit beam 7.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of annular girder steel arch-shelf for tunnel support, annular girder 1 overlaps Connecting groups by multiple arc unit beam 7 and synthesizes circular; Two arc unit beams 7 connect in embedded occlusion overlap joint, and joint is provided with two groups of fixtures that snap ring 2 and lower snap ring 3 are combined into, upper snap ring 2 and lower snap ring 3 pass through bolt 4 and nut 5 fastening.Upper snap ring 2 and lower snap ring 3 shape are mated with arc unit beam 7.
Arc unit beam 7 cross section of looping beam 1 is inverted U-shaped, and bottom its two side the oriented edge of a wing 6 of turning up, this kind of smart structural design, and outer wall and the inwall of U-shaped beam are arc line shaped, and curvature is close, is mutually engaged compact siro spinning technology when ensure that two unit overlap joints.
In using, first connected by two unit overlap joints, lap length is not less than 50cm, the upper snap ring 2 of two groups of fixtures and lower snap ring 3 are fixed on lap-joint, erection bolt 4 fastening 5 can complete connection afterwards, is finally arranged on cavern's rock wall surface by the annular girder steel arch-shelf crane connected.
Claims (3)
1. for an annular girder steel arch-shelf for tunnel support, comprise annular girder (1), it is characterized in that, annular girder (1) overlaps Connecting groups by multiple arc unit beam (7) and synthesizes circular; In embedded occlusion, overlap joint connects two arc unit beams (7), and joint is provided with two groups of fixtures that snap ring (2) and lower snap ring (3) are combined into, upper snap ring (2) and lower snap ring (3) by bolt (4) and nut (5) fastening.
2. the annular girder steel arch-shelf for tunnel support according to claim 1, is characterized in that: the vertical cross-section of described arc unit beam (7) is inverted U-shaped.
3. the annular girder steel arch-shelf for tunnel support according to claim 1 and 2, is characterized in that: bottom described arc unit beam (7) two side the oriented edge of a wing (6) of turning up.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201520369326.1U CN204663551U (en) | 2015-06-02 | 2015-06-02 | For the annular girder steel arch-shelf of tunnel support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201520369326.1U CN204663551U (en) | 2015-06-02 | 2015-06-02 | For the annular girder steel arch-shelf of tunnel support |
Publications (1)
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CN204663551U true CN204663551U (en) | 2015-09-23 |
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CN201520369326.1U Active CN204663551U (en) | 2015-06-02 | 2015-06-02 | For the annular girder steel arch-shelf of tunnel support |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106677809A (en) * | 2017-02-22 | 2017-05-17 | 天津大学 | Contractible fabricated steel plate support |
CN106968687A (en) * | 2017-04-01 | 2017-07-21 | 湖南科技大学 | The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support |
CN108561161A (en) * | 2018-06-01 | 2018-09-21 | 齐鲁交通发展集团有限公司 | A kind of scalability steel arch-shelf |
-
2015
- 2015-06-02 CN CN201520369326.1U patent/CN204663551U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106677809A (en) * | 2017-02-22 | 2017-05-17 | 天津大学 | Contractible fabricated steel plate support |
CN106968687A (en) * | 2017-04-01 | 2017-07-21 | 湖南科技大学 | The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support |
CN108561161A (en) * | 2018-06-01 | 2018-09-21 | 齐鲁交通发展集团有限公司 | A kind of scalability steel arch-shelf |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant |