CN201281065Y - Grouting expansion anchor bolt - Google Patents
Grouting expansion anchor bolt Download PDFInfo
- Publication number
- CN201281065Y CN201281065Y CNU200820166425XU CN200820166425U CN201281065Y CN 201281065 Y CN201281065 Y CN 201281065Y CN U200820166425X U CNU200820166425X U CN U200820166425XU CN 200820166425 U CN200820166425 U CN 200820166425U CN 201281065 Y CN201281065 Y CN 201281065Y
- Authority
- CN
- China
- Prior art keywords
- anchor bolt
- screw rod
- expanded anchor
- bolt
- slip casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model relates to a cinch bolt, in particular to a slip-casting cinch bolt which is arranged on buildings or structures by adopting the postposition method. The cinch bolt is characterized in that a slip-casting hole (3) is arranged in the center of a screw rod (1).
Description
Technical field
The utility model relates to and a kind ofly adopts rearmounted method to be installed in the slip casting expanded anchor bolt that carries out grouting and reinforcing after expanded anchor bolt on building or the structure, particularly bolt are installed.
Background technique
Current, known expanded anchor bolt, requirement of strength is higher is generally the steel expanded anchor bolt, and this bolt fixedly the time, by the anchor steel bushing distending that expands, is carrying out anchoring with the frictional force that the matrix hole wall produces with matrix.There is deficiency in this anchor type.1. the screw rod tail end is that line contacts with bloated anchor steel bushing, and the frictional force of the little generation of surface of contact is also little, and then the anchor force of bolt is just little; 2. produce resiliently deformable behind the steel bushing distending, and produce frictional force by energy of deformation between the matrix hole wall, owing to retrained by energy of deformation for a long time, Steel Sleeve is easy to generate creeps, the frictional force of forfeiture and matrix hole wall gradually, and then expanded anchor bolt loses effectiveness; 3. all at the screw rod root, there is the gap in expanded anchor bolt anchorage effect position between oral area place screw rod and matrix aperture, when expanded anchor bolt is subjected to shearing, and the easy displacement of bolt, then shearing resistance is low.
Summary of the invention
The purpose of this utility model is to provide a kind of, and anchor force is strong, is difficult for producing material and creeps, and can effectively improve the slip casting expanded anchor bolt of shear resistance.
The purpose of this utility model is achieved in that in expanded anchor bolt screw rod axle center a hole is set, and at the collar extension place, screw thread seals in order to screw on the strand, after expanded anchor bolt is installed, can use special tool, in matrix hole, fill with slurry by this screw rod hole, make screw rod and steel bushing, the space between steel bushing and the matrix hole wall, filled, strengthen the rubbing surface between the material, placed restrictions on the space of material redeformation, improved the shear resistance of material.
The utility model is because filled up slurry in the expanded anchor bolt mounting hole, and the distortion that the anchor steel bushing that expands is formed before slip casting no longer includes the space of continuing distortion, creeps so steel bushing is difficult for producing, and the bloated anchor-hold of steel bushing can be sustained; Owing to filled up slurry in the matrix hole, screw rod is very close to each other on every side, so the shear resistance of expanded anchor bolt is improved in addition.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is that cutting plane is in the bolt central position according to the sectional arrangement drawing of the slip casting expanded anchor bolt that the utility model proposes.
The utility model comprises screw rod (1), steel bushing (2), injected hole (3) and seal screw (4).
Describe in detail according to detail and the working condition that the utility model proposes below in conjunction with Fig. 1.
Embodiment
Embodiment 1: after expanded anchor bolt installs and fixes, open and be in the supercentral screw (4) that seals of screw rod (1), use special tool slip casting in the injected hole (3) that is arranged on screw rod (1) center, make the inside and outside slurry that all fills up of screw rod (1) and bloated anchor steel bushing (2), no longer include the space that deforms, so the expanded anchor bolt material is not easy to produce and creeps; Owing to fill up slurry in the matrix hole, increased screw rod (1) and bloated anchor steel bushing (2) and and the matrix hole wall between rubbing surface, so the raising of the anchor force of screw rod; Owing to fill up slurry in the matrix hole, do not have displacement space between screw rod (1) and hole wall, so improved the shear resistance of screw rod.
Claims (2)
1. expanded anchor bolt particularly adopts rearmounted method to be installed in the slip casting expanded anchor bolt of building on thing or the structure, it is characterized in that screw rod (1) center is provided with injected hole (3).
2. slip casting expanded anchor bolt according to claim 1 is characterized in that the injected hole (3) at screw rod (1) center sealing screw (4) at the collar extension place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820166425XU CN201281065Y (en) | 2008-11-05 | 2008-11-05 | Grouting expansion anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820166425XU CN201281065Y (en) | 2008-11-05 | 2008-11-05 | Grouting expansion anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201281065Y true CN201281065Y (en) | 2009-07-29 |
Family
ID=40927940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820166425XU Expired - Fee Related CN201281065Y (en) | 2008-11-05 | 2008-11-05 | Grouting expansion anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201281065Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643011A (en) * | 2018-06-01 | 2018-10-12 | 江北建设有限公司 | A kind of vega cement road construction punching block |
-
2008
- 2008-11-05 CN CNU200820166425XU patent/CN201281065Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643011A (en) * | 2018-06-01 | 2018-10-12 | 江北建设有限公司 | A kind of vega cement road construction punching block |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101270667A (en) | Surrounding rock supporting method for ultra-strong or strong or medium rock burst tunnel section deep imbedded in underground chamber | |
| CN205370613U (en) | Utilize biliquid slip casting medicated roll to realize high prestressing force total length anchored stock | |
| CN203879523U (en) | Expansion shell anchor rod | |
| CN201281065Y (en) | Grouting expansion anchor bolt | |
| CN103147772B (en) | Method for supporting steel strip connecting bridge of arch-shaped soft rock roadway with large section | |
| CN206539359U (en) | A kind of umbrella-type grouted anchor bar | |
| CN2756708Y (en) | Full length adhesive prestress anchor rod | |
| CN204877514U (en) | Modular cavity slip casting stock | |
| CN207212381U (en) | A kind of anchor pole for deep tunnel soft-rock slope | |
| CN105201525A (en) | Repairable bottom heave control method | |
| CN205654362U (en) | Anchor rod structure for fixing special net | |
| CN106368717B (en) | A kind of tunnel anti-collapse supporting construction | |
| CN202325585U (en) | Fastening anchor head suitable for end anchorage for anchor rod | |
| CN204827497U (en) | Visual prestressing force resistance to plucking resin stock | |
| CN201125742Y (en) | Expansion sheath type anchor rod | |
| CN204827500U (en) | Pinniform wedge body stock | |
| CN205172610U (en) | A stock anchor for tunnel country rock | |
| CN204919542U (en) | Cusp high pressure slip casting stock | |
| CN204040022U (en) | Castinplace pile avulsion structure | |
| CN204023425U (en) | The U-shaped hoop reinforcing construction of T-shaped beam bridge steel plate | |
| CN105200990B (en) | A kind of tube-expanding type anchor cable | |
| CN204202890U (en) | The anchor rod anchored process simulation experimental provision of Soft Rock Drifts At Coal | |
| CN209875198U (en) | Inverted expansion type high-strength tensile anchor rod for tunnel support | |
| CN111074889A (en) | Hydraulic expansion type soil-extruding anchor rod and using method thereof | |
| CN205135647U (en) | Can prosthetic prevention and cure pucking structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20101105 |