CN205936659U - A take stiffening rib shaped steel steelframe for tunnel preliminary bracing - Google Patents
A take stiffening rib shaped steel steelframe for tunnel preliminary bracing Download PDFInfo
- Publication number
- CN205936659U CN205936659U CN201620563409.9U CN201620563409U CN205936659U CN 205936659 U CN205936659 U CN 205936659U CN 201620563409 U CN201620563409 U CN 201620563409U CN 205936659 U CN205936659 U CN 205936659U
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- shaped steel
- steelframe
- web
- preliminary bracing
- profile steel
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides the utility model discloses a shaped steel steelframe of tunnel preliminary bracing area stiffening rib to effectively improve shaped steel steelframe atress performance, avoid the steelframe to take place the bucking unstability, guarantee initial stage supporting construction intensity full play. I shaped steel or the H shaped steel of shaped steel steelframe body for having a web and a pair of wings listrium, the web both sides are followed shaped steel steelframe extended length direction interval and are set up reinforced rib plate, reinforced rib plate and web welding.
Description
Technical field
This utility model is related to railway, highway, municipal works field, particularly to a kind of preliminary bracing for tunnel
Profile steel frame.
Background technology
At present, bored tunnel is substantially all constructed by New Austrian Tunneling Method principle, using composite lining supporting, including preliminary bracing
And secondary lining.Wherein, the support system that preliminary bracing and country rock collectively constitute is primary load bearing structure, and secondary lining is mainly made
For safety stock.
Preliminary bracing mainly forms (abbreviation combined bolting and shotcrete) by gunite concrete, anchor pole and reinforced mesh combined supporting,
When tunnel passes through bad geological section and fractured weak zone, the auxiliary such as setting shaped steel in pneumatically placed concrete typically can be taken to arrange
Apply.
In recent years, it is stained with to six, Lan Yu, Cheng Lan, Yun Gui, the investigation of the railway such as long elder brother find, pass through weak broken for part
Country rock, fault belt, the tunnel in soft rock high-ground stress location, preliminary bracing Shaped Steel steelframe often occurs flexing unstability to lead
Preliminary bracing is caused to destroy.Trace it to its cause, because profile steel frame is I-shaped or H-shaped, its section is firm in X-direction and Y-direction bending resistance
Degree difference is larger, in high-ground stress location, particularly after preliminary bracing pneumatically placed concrete ftractures, the restriction ability of steelframe is subtracted
Weak, because section bending rigidity is asymmetric, lead to steelframe that flexing occurs due to the outer unstability of plane, and fail to give full play to steelframe
Bearing capacity.
Therefore, in high-ground stress location, for improving preliminary bracing stress performance, give full play to steelframe bearing capacity, pass through
Ribbed stiffener is arranged to profile steel frame, steelframe can be prevented effectively from and flexing unstability occurs, thus fully ensuring that preliminary bracing structure safety.
Utility model content
Technical problem to be solved in the utility model be provide a kind of for the shaped steel with ribbed stiffener for the Tunnel
Steelframe, to be effectively improved profile steel frame stress performance, it is to avoid steelframe occurs flexing unstability it is ensured that preliminary bracing structural strength is abundant
Play.
It is as follows that this utility model solves the technical scheme that its technical problem adopted：
A kind of band ribbed stiffener profile steel frame for Tunnel of the present utility model, profile steel frame body is to have
The i shaped steel of web and a pair of flange plate or H profile steel, is characterized in that：Described web both sides are along profile steel frame length bearing of trend
Interval setting deep floor, deep floor is welded with web.
The beneficial effects of the utility model are, by arranging ribbed stiffener so that shaped steel section planar outer bending rigidity
More symmetrical, it is effectively improved profile steel frame stress performance, it is to avoid steelframe occurs flexing unstability, give full play to preliminary bracing and carry energy
Power.
Brief description
This specification includes following five width accompanying drawings：
Fig. 1 be this utility model a kind of for the cross-sectional view with ribbed stiffener profile steel frame for the Tunnel；
Fig. 2 be this utility model a kind of for the cross-sectional view with ribbed stiffener profile steel frame for the Tunnel；
Fig. 3 is the profile of the I-I line along along Fig. 1；
Fig. 4 is that this utility model is a kind of props up for the tunnel initial-stage with ribbed stiffener profile steel frame for the Tunnel for setting
The facade layout drawing of shield；
Fig. 5 is the profile of II-II line along along Fig. 4；
In figure illustrates component, toponym and corresponding labelling：Profile steel frame 10, flange plate 11, web 12, deep floor
13rd, rock 20 around hole, shotcrete layer 30, first pneumatically placed concrete layer 31, shotcrete layer 32 in steelframe altitude range, multiple spray
Concrete layer 33, prearrangement of deformation amount seam 40, secondary lining 50.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is further illustrated.
Reference Fig. 1, Fig. 2 and Fig. 3, a kind of band ribbed stiffener profile steel frame for Tunnel of the present utility model,
Profile steel frame 10 body is i shaped steel or the H profile steel with web 12 and a pair of flange plate 11.Described web 12 both sides are along type
Steel steelframe 10 length bearing of trend interval setting deep floor 13, deep floor 13 is welded with web 12.By to traditional just
I shaped steel in phase supporting or H profile steel on its web interval setting ribbed stiffener so that the planar outer bending resistance of shaped steel section
Rigidity is more symmetrical, is not susceptible to the outer unstability of plane, gives full play to preliminary bracing bearing capacity.
With reference to Fig. 4 and Fig. 5, Tunnel construction includes covering the shotcrete layer 30 of rock 20 around hole, and
It is embedded in the profile steel frame 10 in shotcrete layer 30 along tunnel excavation direction interval.Shotcrete layer 30 is by just spraying coagulation
Soil layer 31 and multiple pneumatically placed concrete layer 32,33 are combined and constitute, and just pneumatically placed concrete layer 31 covers rock 20 around hole, in steelframe altitude range
Shotcrete layer 32 sprays in profile steel frame 10 altitude range and freezes solidly between adjacent two profile steel frame 10, multiple pneumatically placed concrete
Layer 33 covers steel steelframe 10 as steelframe protective layer.
A kind of band ribbed stiffener shaped steel steel for Tunnel of the above this utility model that simply explains through diagrams
Some principles of frame, are not intended to this utility model is confined in shown and described concrete structure and the scope of application, therefore all
It is corresponding modification and the equivalent being possible to be utilized, belong to the apllied the scope of the claims of this utility model.
Claims (1)
1. a kind of band ribbed stiffener profile steel frame for Tunnel, profile steel frame (10) body be have web (12) and
The i shaped steel of a pair of flange plate (11) or H profile steel, is characterized in that：Described web (12) both sides are prolonged along profile steel frame (10) length
Stretch direction interval setting deep floor (13), deep floor (13) is welded with web (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563409.9U CN205936659U (en) | 2016-06-12 | 2016-06-12 | A take stiffening rib shaped steel steelframe for tunnel preliminary bracing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563409.9U CN205936659U (en) | 2016-06-12 | 2016-06-12 | A take stiffening rib shaped steel steelframe for tunnel preliminary bracing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936659U true CN205936659U (en) | 2017-02-08 |
Family
ID=57932197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620563409.9U Active CN205936659U (en) | 2016-06-12 | 2016-06-12 | A take stiffening rib shaped steel steelframe for tunnel preliminary bracing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936659U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331252A (en) * | 2018-04-05 | 2018-07-27 | 南京林业大学 | A kind of compound box beam of self-heat conserving bamboo and wood |
| CN108331253A (en) * | 2018-04-05 | 2018-07-27 | 南京林业大学 | A kind of bamboo matter gluing box beam |
| CN110332007A (en) * | 2019-07-29 | 2019-10-15 | 中国恩菲工程技术有限公司 | Drop shaft diagrid |
| CN113565544A (en) * | 2021-08-02 | 2021-10-29 | 中铁二院工程集团有限责任公司 | Tunnel support steel frame assembly and tunnel support construction method |
| CN114135322A (en) * | 2021-11-22 | 2022-03-04 | 中铁十六局集团第三工程有限公司 | Reinforcing method for preventing steel frame from being twisted in large-deformation tunnel |
-
2016
- 2016-06-12 CN CN201620563409.9U patent/CN205936659U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331252A (en) * | 2018-04-05 | 2018-07-27 | 南京林业大学 | A kind of compound box beam of self-heat conserving bamboo and wood |
| CN108331253A (en) * | 2018-04-05 | 2018-07-27 | 南京林业大学 | A kind of bamboo matter gluing box beam |
| CN110332007A (en) * | 2019-07-29 | 2019-10-15 | 中国恩菲工程技术有限公司 | Drop shaft diagrid |
| CN113565544A (en) * | 2021-08-02 | 2021-10-29 | 中铁二院工程集团有限责任公司 | Tunnel support steel frame assembly and tunnel support construction method |
| CN113565544B (en) * | 2021-08-02 | 2024-09-24 | 中铁二院工程集团有限责任公司 | Tunnel support steel frame assembly and tunnel support construction method |
| CN114135322A (en) * | 2021-11-22 | 2022-03-04 | 中铁十六局集团第三工程有限公司 | Reinforcing method for preventing steel frame from being twisted in large-deformation tunnel |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |