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CN204663551U - For the annular girder steel arch-shelf of tunnel support - Google Patents

For the annular girder steel arch-shelf of tunnel support Download PDF

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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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CN
China
Prior art keywords
annular girder
snap ring
arc unit
shelf
steel arch
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Active
Application number
CN201520369326.1U
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Chinese (zh)
Inventor
蔡敏
刘华云
陈斌
于洪成
魏方显
刘建江
向荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Gezhouba Group Co Ltd
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China Gezhouba Group Co Ltd
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Publication date
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Priority to CN201520369326.1U priority Critical patent/CN204663551U/en
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Publication of CN204663551U publication Critical patent/CN204663551U/en
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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

For the annular girder steel arch-shelf of tunnel support
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.
CN201520369326.1U 2015-06-02 2015-06-02 For the annular girder steel arch-shelf of tunnel support Active CN204663551U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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
CN201520369326.1U CN204663551U (en) 2015-06-02 2015-06-02 For the annular girder steel arch-shelf of tunnel support

Publications (1)

Publication Number Publication Date
CN204663551U true CN204663551U (en) 2015-09-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520369326.1U Active CN204663551U (en) 2015-06-02 2015-06-02 For the annular girder steel arch-shelf of tunnel support

Country Status (1)

Country Link
CN (1) CN204663551U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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