CN208122861U - A kind of elliptic cross-section hollow steel tube concrete support component that bending resistance is strengthened - Google Patents
A kind of elliptic cross-section hollow steel tube concrete support component that bending resistance is strengthened Download PDFInfo
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- CN208122861U CN208122861U CN201820137744.1U CN201820137744U CN208122861U CN 208122861 U CN208122861 U CN 208122861U CN 201820137744 U CN201820137744 U CN 201820137744U CN 208122861 U CN208122861 U CN 208122861U
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- elliptic cross
- section
- bending resistance
- tube
- outer tube
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Abstract
The purpose of this utility model is to provide the elliptic cross-section hollow steel tube concrete support components that a kind of bending resistance is strengthened, including elliptic cross-section outer tube, elliptic cross-section inner tube, bending resistance reinforced concrete-bar, the elliptic cross-section outer tube is consistent with the center of circle of elliptic cross-section inner tube, the long axis direction of elliptic cross-section outer tube Yu elliptic cross-section inner tube is arranged in the bending resistance reinforced concrete-bar, between elliptic cross-section outer tube and elliptic cross-section inner tube, bending resistance reinforced concrete-bar is fixedly connected with elliptic cross-section outer tube with elliptic cross-section inner tube is integral the two fixation, self-compacting concrete is filled between the elliptic cross-section outer tube and elliptic cross-section inner tube, the component bending resistance is strong, it is self-possessed small, it constructs convenient and fast elliptic cross-section hollow steel tube concrete support component.
Description
Technical field
The ellipse that the utility model belongs to tunnel steel pipe concrete bracket supporting field more particularly to a kind of bending resistance is strengthened
Cross-sectional hollow CFSTsupport member.
Background technique
In concrete filled steel tube, steel pipe can make concrete be in three dimension stress state, and steel pipe can be improved in concrete
Rigidity, the two play a role jointly, so that bearing capacity substantially enhances.It is safe and reliable etc. excellent since with intensity height, stability is good
Point, in recent years, steel pipe concrete bracket are widely used in soft rock roadway support, and achieve preferable supporting effect.
CFSTsupport member currently used for roadway support mainly has two kinds of circular cross-section and square-section, construction
Preceding elder generation's Prefabricated concrete-filled steel tube bracket（First not casting concrete in pipe）, transport to tunnel, by casing by component be installed on to
Then the tunnel of supporting pours customary commercial concrete to component inside.These components alleviate Soft Rock Roadway to a certain extent
Road is difficult to the awkward situation of supporting, but still has a series of disadvantage：First, in live supporting, often there is bending failure, structure in component
Part bending resistance is insufficient；Second：Pipe inner concrete, which pours, smashes leakiness, and gap often occurs in inner concrete, reduces holding for component
Carry performance；Third：Poured in place concrete, construction technology very complicated；4th：Member dead weight is excessive, is unfavorable for itself stress.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency for existing steel pipe concrete bracket, provides a kind of bending resistance
By force, self weight is small, convenient and fast elliptic cross-section hollow steel tube concrete support component of constructing.
To achieve the above object, the technical solution of the utility model is：A kind of elliptic cross-section cored steel that bending resistance is strengthened
Pipe concrete support element, including elliptic cross-section outer tube, elliptic cross-section inner tube, bending resistance reinforced concrete-bar, the ellipse
Section outer tube is consistent with the center of circle of elliptic cross-section inner tube, and the bending resistance reinforced concrete-bar setting is in elliptic cross-section outer tube and ellipse
The long axis direction of tee section inner tube, between elliptic cross-section outer tube and elliptic cross-section inner tube, bending resistance reinforced concrete-bar with it is ellipse
Circular cross-section outer tube be fixedly connected with elliptic cross-section inner tube by the two fixation is integral, the elliptic cross-section outer tube and
Self-compacting concrete is filled between elliptic cross-section inner tube.
The circumferential shape of the elliptic cross-section outer tube and inner tube is matched with the shape in tunnel.
The material of the elliptic cross-section outer tube and inner tube can be high-intensitive steel and alloy material.
The bending resistance reinforced concrete-bar is the high strength cast iron of Φ 14mm- Φ 28mm, along the circumferential elongated arrangement of component.
The construction method of the utility model is：When construction, in the elliptic cross-section hollow steel tube that floor manufacture bending resistance is strengthened
Concrete support component, after self-compacting concrete reaches design strength, transport to tunnel, by casing by component be assemblied in
The tunnel of supporting.
The positive effect of the utility model is：
（1）Component uses the outer tube and inner tube of elliptic cross-section, and is additionally arranged bending resistance reinforced concrete-bar, and bending resistance is significantly
It improves；
（2）Casting concrete, member dead weight are not greatly lowered elliptic cross-section internal tube, and have saved a large amount of mixed
Solidifying soil material；
（3）The concrete poured between elliptic cross-section outer tube and inner tube is self-compacting concrete, reduces process of vibrating, keeps away
Exempt from inner concrete and pour leakiness, to improve the bearing capacity of component；
（4）Component is prefabricated on ground and pours self-compacting concrete in pipe, is assembled in tunnel using assembled technique
Construction, improves the convenience of rack construction.
Detailed description of the invention
Fig. 1 is the elliptic cross-section hollow steel tube concrete support component radial cross section that bending resistance is strengthened.
Fig. 2 is the elliptic cross-section hollow steel tube concrete support component circumferential direction schematic cross-section that bending resistance is strengthened.
Wherein, 1, elliptic cross-section outer tube；2, self-compacting concrete；3, elliptic cross-section inner tube；4, bending resistance reinforced concrete-bar.
Specific embodiment
The utility model in order to better understand explains in detail the embodiments of the present invention with reference to the accompanying drawing.
It is elliptic cross-section hollow steel tube concrete support component that bending resistance is strengthened, such as Fig. 1 that the utility model is revealed
It is shown, it is the utility model preferred embodiment.Bending resistance strengthen elliptic cross-section hollow steel tube concrete support component include
3, two elliptic cross-section outer tube 1, elliptic cross-section inner tube bending resistance reinforced concrete-bars 4,
Elliptic cross-section outer tube 1 is consistent with the center of circle of elliptic cross-section inner tube 3, and strong by welding bending resistance in long axis direction
Change reinforcing bar 4 to be integral the two fixation.
The circumferential shape of elliptic cross-section outer tube 1 and inner tube 3 is matched with to supported laneway shape, can be according to tunnel reality
Situation is combined into all roadway support.
Self-compacting concrete 2 is filled between elliptic cross-section outer tube 1 and elliptic cross-section inner tube 3.
Elliptic cross-section outer tube 1 and elliptic cross-section inner tube 3 are high tensile steel tube.
Bending resistance reinforced concrete-bar 4 is the high tensile reinforcement of Φ 18mm along the circumferential elongated arrangement of component, diameter.
The construction method of the utility model is：When construction, in the elliptic cross-section hollow steel tube that floor manufacture bending resistance is strengthened
Concrete support component transports to tunnel after self-compacting concrete 4 reaches design strength, is assemblied in component by casing
Tunnel surface to supporting.
The above, only the utility model preferred embodiment, and this non-limiting utility model.The phase of this field
A variety of modifications can be made under the premise of without departing from this principle to this embodiment by closing technical staff, but these modifications belong to
In the protection scope of the utility model.
Claims (4)
1. the elliptic cross-section hollow steel tube concrete support component that a kind of bending resistance is strengthened, it is characterised in that：It is cut including ellipse
Face outer tube, elliptic cross-section inner tube, bending resistance reinforced concrete-bar, the center of circle of the elliptic cross-section outer tube and elliptic cross-section inner tube
Unanimously, the long axis direction of elliptic cross-section outer tube Yu elliptic cross-section inner tube is arranged in the bending resistance reinforced concrete-bar, is located at ellipse
Between tee section outer tube and elliptic cross-section inner tube, bending resistance reinforced concrete-bar and elliptic cross-section outer tube and elliptic cross-section inner tube are consolidated
The two fixation is integral by fixed connection, and self-compaction coagulation is filled between the elliptic cross-section outer tube and elliptic cross-section inner tube
Soil.
2. the elliptic cross-section hollow steel tube concrete support component that bending resistance according to claim 1 is strengthened, feature exist
In：The circumferential shape of elliptic cross-section outer tube and inner tube is matched with the shape in tunnel.
3. the elliptic cross-section hollow steel tube concrete support component that bending resistance according to claim 1 is strengthened, feature exist
In：The material of the elliptic cross-section outer tube and inner tube can be high-intensitive steel and alloy material.
4. the elliptic cross-section hollow steel tube concrete support component that bending resistance according to claim 1 is strengthened, feature exist
In：The bending resistance reinforced concrete-bar is the high strength cast iron of Φ 14mm- Φ 28mm, along the circumferential elongated arrangement of component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820137744.1U CN208122861U (en) | 2018-01-26 | 2018-01-26 | A kind of elliptic cross-section hollow steel tube concrete support component that bending resistance is strengthened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820137744.1U CN208122861U (en) | 2018-01-26 | 2018-01-26 | A kind of elliptic cross-section hollow steel tube concrete support component that bending resistance is strengthened |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208122861U true CN208122861U (en) | 2018-11-20 |
Family
ID=64206410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820137744.1U Expired - Fee Related CN208122861U (en) | 2018-01-26 | 2018-01-26 | A kind of elliptic cross-section hollow steel tube concrete support component that bending resistance is strengthened |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208122861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439921A (en) * | 2019-01-08 | 2019-03-08 | 成都市微晶特种金属材料有限责任公司 | A kind of ellipse flat ingot mould |
| CN109439921B (en) * | 2019-01-08 | 2024-06-11 | 成都市微晶特种金属材料有限责任公司 | Oval slab ingot crystallizer |
-
2018
- 2018-01-26 CN CN201820137744.1U patent/CN208122861U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439921A (en) * | 2019-01-08 | 2019-03-08 | 成都市微晶特种金属材料有限责任公司 | A kind of ellipse flat ingot mould |
| CN109439921B (en) * | 2019-01-08 | 2024-06-11 | 成都市微晶特种金属材料有限责任公司 | Oval slab ingot crystallizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20220126 |