CN204140095U - A kind of novel curved surface D shape steel tube concrete support link - Google Patents
A kind of novel curved surface D shape steel tube concrete support link Download PDFInfo
- Publication number
- CN204140095U CN204140095U CN201420554950.4U CN201420554950U CN204140095U CN 204140095 U CN204140095 U CN 204140095U CN 201420554950 U CN201420554950 U CN 201420554950U CN 204140095 U CN204140095 U CN 204140095U
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- sleeve pipe
- curved surface
- steel tube
- support
- retainer plate
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Abstract
The utility model discloses and be a kind ofly applied to deep-well high-ground stress, complicated geological, link by the curved surface D shape steel tube concrete support of the large roadway support of dynamic pressure disturbing influence and soft rock roadway support difficult in maintenance, relate to colliery tunnel support technical field.Comprise sleeve pipe (1), strengthen the collar (2), reinforcing rib (3) and retainer plate (4).The utility model structure is simple, it is ingenious to design.Devise the reinforcement collar processed by material identical with sleeve pipe, strengthen collar nominal diameter be greater than sleeve pipe and just can be enclosed within sleeve pipe and through being fixedly welded on sleeve pipe two ends, the cage type skeleton be made up of reinforcing rib and retainer plate is connected to internal surface of casing in welding, be poured in concrete during use and form reinforced concrete structure, strengthen the intensity at two fastener for connection places.This link can prevent sleeve pipe two ends to be torn, and reduces the bulk deformation of steel pipe concrete bracket, makes support be in stable state, thus effectively ensures roadway support safety.
Description
Technical field
The utility model relates to and is applied to deep-well high-ground stress, complicated geological, link by the curved surface D shape steel tube concrete support of the large roadway support of dynamic pressure disturbing influence and soft rock roadway support difficult in maintenance.
Background technology
At present, the support pattern in China's deep-well high-ground stress tunnel is high-strength anchor rete cord and the U-shaped steel bracket of reinforcement two kinds of support patterns mainly, even use together with U-shaped steel bracket at a lot of mining areas anchor rete cord, but still effectively can not control deformation of the surrounding rock in tunnel.U-shaped steel bracket is a kind of shape steel bracket of sizing, and its maximum shortcoming is the intensity that tie point does not reach U-shaped steel itself, and the utilization rate of steel is lower, can not adapt to the stress condition of deep complexity, also add the labour intensity of workman while causing steel to waste.
Steel pipe concrete bracket is a kind of novel support pattern grown up in recent years, can be divided into circular steel tube concrete support and steel tubes concrete support according to steel tube section shape, and curved surface D shape steel tube concrete support is a kind of form wherein.There is due to concrete filled steel tube the series of advantages such as bearing capacity is high, corrosion-resistant, constructability, its application in the roadway support of deep-well high-ground stress is more and more extensive, and its application in bridge engineering, construction of tunnel also more and more causes interest and the attention of people.But there are some problems in existing curved surface D shape steel tube concrete support splicing sleeve, main manifestations is:
Casing strength is large not, the two ends particularly inside sleeve pipe.Along with the distortion of country rock in the tunnel that soft rock affects by dynamic pressure, can produce at the two ends, inner side of the loading process middle sleeve of support obvious stress concentrate cause sleeve pipe generation unstable failure;
Sleeve design is unreasonable, the contact position of two steel pipes in sleeve pipe is preferably in the centre of sleeve pipe, existing sleeve design is not slided for making sleeve pipe, back-up ring need be welded on the steel pipe be connected with sleeve pipe, if the back-up ring welding position slightly deviation of two sections of steel pipes that connect, inoperative or the two sections of steel pipes of wherein a certain back-up ring can be caused effectively can not to contact in sleeve pipe, the holistic resistant behavior of support is reduced;
Steel pipe is to the confined effect of core concrete, and make core concrete be in three-dimensional stress state, concrete changes plastic material into by fragile material, and this is the basic place that concrete filled steel tube has better mechanical property.The connecting portion of curved surface D shape steel tube concrete support is the weak link of support entirety, and in ordinary casing, two sections of steel pipes are without any reinforcement measure.Are stressed planes of weakness two sections of steel pipe contact positions, pipe inner concrete is still fragile material, and along with the entirety of support is stressed, this place shear failure will occur and unstability.
Summary of the invention
In order to two ends stress inside overcoming common curved surface D shape steel tube concrete support splicing sleeve concentrates the disadvantage be very easily torn, simultaneously for adapting to deep-well high-ground stress, complicated geological, affecting by dynamic pressure and the supporting requirement of soft-rock tunnel, propose a kind of novel curved surface D shape steel tube concrete support link.
This novel curved surface D shape steel tube concrete support link processes with high tensile steel tube, two ends inside sleeve pipe effectively can be prevented to be torn on the one hand, play the tensile property of self to greatest extent; The bulk deformation of steel pipe concrete bracket can be reduced on the other hand, make support be in stable state, thus effectively ensure roadway support safety.
The utility model solves the technical scheme that its technical problem adopts: a kind of novel curved surface D shape steel tube concrete support link, comprises sleeve pipe (1), strengthens the collar (2), reinforcing rib (3) and retainer plate (4).It is characterized in that, described reinforcing rib (3) be set to four and Non-completety symmetry be welded on retainer plate (4), described retainer plate (4) is by connecing the inner surface being welded in sleeve pipe (1) in three sections of reinforcing bars, and the described reinforcement collar (2) is welded in the two ends of sleeve pipe (1) by electrical pads.The steel pipe that Ф 165 × 6.5mm chosen by sleeve pipe (1) forms curved surface D type through cold presswork, and length is 400mm.The reinforcement collar (2) of sleeve pipe (1) adopts Ф 180 × 5 mm material steel pipe identical with sleeve pipe to form through cold presswork to be enclosed within sleeve pipe (1), width is 50mm, strengthen the collar (2) through strengthen connotation, its intensity to be made to be greater than sleeve pipe (1) intensity, be welded on the two ends of sleeve pipe (1), the retainer plate (4) of four reinforcing ribs (3) is welded with in sleeve pipe (1) bosom position, the cage type skeleton that reinforcing rib (3) and retainer plate (4) are formed is poured in concrete in use, two sections of steel pipe contact surfaces are made to be in the centre position of sleeve pipe, steel pipe does not need weld back-up ring, due to curved surface D molded cannula cross sectional shape Non-completety symmetry, larger bending resistance and anti-shear ability is reached for making steel concrete in steel pipe, reinforcing rib (3) distribution form is made to take the form of Non-completety symmetry equally, now concrete resistance to compression and anti-shearing damage capability significantly improve.Thus greatly improve the ability of sleeve pipe resistance to deformation, support overall performance is also optimized.
The beneficial effects of the utility model are, enhance the intensity at fastener for connection place, reduce the bulk deformation of steel pipe concrete bracket, make support be in stable state, thus effectively ensure roadway support safety.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is top view of the present utility model.
Fig. 3 is left view of the present utility model.
1 sleeve pipe in figure, 2 strengthen the collar, 3 reinforcing ribs, 4 retainer plates.
Detailed description of the invention
Described sleeve pipe (1) length is 400mm, for the steel pipe of Ф 165 × 6.5mm becomes curved surface D type through cold presswork, steel pipe concrete bracket form conventional at present has several forms such as the shape of a hoof, arch and circle, according to the concrete form of support and the residing in the bracket particular location of sleeve pipe, sleeve pipe is carried out curvedly draw machine-shaping and ensure the neat free from flaw in sleeve pipe two ends.
The described reinforcement collar (2) first becomes curved surface D type to process through strengthen connotation through cold presswork for Ф 180 × 5 mm steel pipe identical with sleeve pipe (1) material again, the concordant width in two ends is 50mm, suitably can strengthen the width strengthening the collar (2) in the roadway support of rock crusher, be soldered to the two ends of sleeve pipe (1) by electrical pads and concordant with the two ends of sleeve pipe (1).
Described reinforcing rib (3) is the screw-thread steel of four Ф 20mm, and its length will grow each 100mm in sleeve pipe (1) two ends.And four reinforcing ribs (3) are welded on retainer plate (4) that diameter is 45mm according to the cross sectional shape Non-completety symmetry of curved surface D shape steel tube, form the inner surface of cage type frame welding in sleeve pipe (1) by reinforcing rib (3) and retainer plate (4).
Claims (5)
1. a novel curved surface D shape steel tube concrete support link, comprise sleeve pipe (1), strengthen the collar (2), reinforcing rib (3) and retainer plate (4), it is characterized in that, described reinforcing rib (3) be set to four and Non-completety symmetry be welded on retainer plate (4), described retainer plate (4) is by connecing the inner surface being welded in sleeve pipe (1) in three sections of reinforcing bars, and the described reinforcement collar (2) is welded in the two ends of sleeve pipe (1) by electrical pads.
2. one according to claim 1 novel curved surface D shape steel tube concrete support link, is characterized in that, the described reinforcement collar (2) is identical with sleeve pipe (1) material, becomes curved surface D type through cold presswork.
3. one according to claim 1 novel curved surface D shape steel tube concrete support link, is characterized in that, the described reinforcement collar (2) is welded in sleeve pipe (1) two ends after strengthen connotation, and width is 50mm.
4. one according to claim 1 novel curved surface D shape steel tube concrete support link, it is characterized in that, described reinforcing rib (3) is four, is fixedly welded on retainer plate (4) Non-completety symmetry, and reinforcing rib (3) and retainer plate (4) are all the screw-thread steel of material of the same race.
5. one according to claim 1 novel curved surface D shape steel tube concrete support link, is characterized in that, the cage type skeleton that described reinforcing rib (3) and retainer plate (4) are formed is poured in concrete in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420554950.4U CN204140095U (en) | 2014-09-25 | 2014-09-25 | A kind of novel curved surface D shape steel tube concrete support link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420554950.4U CN204140095U (en) | 2014-09-25 | 2014-09-25 | A kind of novel curved surface D shape steel tube concrete support link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140095U true CN204140095U (en) | 2015-02-04 |
Family
ID=52416788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420554950.4U Expired - Fee Related CN204140095U (en) | 2014-09-25 | 2014-09-25 | A kind of novel curved surface D shape steel tube concrete support link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140095U (en) |
-
2014
- 2014-09-25 CN CN201420554950.4U patent/CN204140095U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20150925 |
|
| EXPY | Termination of patent right or utility model |