CN103103989A - End-expansive recoverable anchor rod - Google Patents
End-expansive recoverable anchor rod Download PDFInfo
- Publication number
- CN103103989A CN103103989A CN201110374056XA CN201110374056A CN103103989A CN 103103989 A CN103103989 A CN 103103989A CN 201110374056X A CN201110374056X A CN 201110374056XA CN 201110374056 A CN201110374056 A CN 201110374056A CN 103103989 A CN103103989 A CN 103103989A
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- Prior art keywords
- steel bar
- pull rod
- reinforcing steel
- anchor rod
- anchor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Piles And Underground Anchors (AREA)
Abstract
The invention relates to an end-expansive recoverable anchor rod and belongs to the field of rock slope strengthening technology. The end-expansive recoverable anchor rod is mainly composed of a countersunk head anchor bolt with good rigidity, an expansion pipe, a pad pipe, a connecting sleeve, a jacking pipe and a pull rod steel bar. An anchor rod body is placed in an anchor hole at a designed depth and then screwed tightly through a nut, the expansion pipe is squeezed to be open by the countersunk head anchor bolt, and then the anchor rod with an end expansive is formed. The friction bond stress between the expansive end and a rock layer is enhanced, the more tightly the nut is screwed, the more the expansion pipe expands, and the anchor rod with the end expansive can provide larger uplift bearing capacity for slop support technology. The technology of the end-expansive recoverable anchor rod can be widely used for slump strengthening of rock slopes, and can enhance the uplift capacity of the anchor rod to a relatively large extent and provide stronger anchoring force, the strength of the anchor rod is high, the cost is low, and the anchor rod is recoverable.
Description
Technical field:
Patent of the present invention is a kind of novel recoverable anchor rod and anchoring technique.Belong to the geotechnical slope field of reinforcement, be specially adapted to the slump reinforcing of rock side slope and the quick anchoring in the tunnel.
Background technology:
Some relatively ripe anchoring-bolt broaching technology have been arranged in the anchoring-bolt broaching construction technology at present, as the reaming of exploding, mechanical hole reaming, hydraulic reaming and slurry reaming etc., but this reaming construction technology more complicated and equipment are very imperfect, still can not satisfy the requirement of support engineering fast, economical.By the measure of expansion tube is set at the position, termination, the friction bond stress between termination and rock-soil layer of can increasing sharply, form fast that a termination expands anchor pole.After anchor pole is completed the anchoring task, can also carry out recycling to parts such as pull bars, effectively improved the economical of anchor pole.
Summary of the invention:
The anchor pole that the object of the present invention is to provide a kind of termination to expand, it can provide more powerful resistance to plucking ability, and the anchoring task can recycling after completing.
The present invention is achieved by following technical scheme.
The anchor pole that can expand in a kind of termination mainly is comprised of countersunk head crab-bolt, expansion tube, pad pipe, push pipe and reinforcing steel bar of pull rod, and wherein the countersunk head crab-bolt is made by steel, and its end is made as the taper major part, and the other end is established internal thread silk mouth and is connected with reinforcing steel bar of pull rod; Expansion tube has the opening of decile.after the anchor hole pore-forming, with the countersunk head crab-bolt, reinforcing steel bar of pull rod connects, put successively expansion tube, pad pipe and push pipe, then anchor bar body is sent to the hole depth of design, load onto backing plate, fastening nut countersunk head crab-bolt is pulled back, expansion tube is at one end withstood by push pipe and pad pipe, squeezed bulging deformation in the situation that the other end is pushed by the countersunk head crab-bolt, with anchor hole inwall close proximity, form the termination of an expansion in the end of anchor pole, friction bond stress between this expansion termination and rock-soil layer strengthens, the anchor pole that expands in this end can provide more powerful anti-pulling capacity for bolt support technology.After anchor pole use task is completed, can recovery and the recycling of derotation reinforcing steel bar of pull rod to realize push pipe and reinforcing steel bar of pull rod.
The invention has the beneficial effects as follows:
1. between the termination of expanding and rock-soil layer, more powerful friction bond stress is arranged, strengthen the anchored force of anchor pole, its pulling capacity is significantly improved, reliability strengthens, and has avoided anchor rod body to be uprooted the generation of the thing of taking off, and has strengthened the range of application of anchor pole.
2. adopt the present invention that anchor pole is expanded after reaming, in the situation that identical uplift resistance or bearing capacity can suitably shorten the length of anchor pole, thereby save cost.
3. push pipe can reuse, and reinforcing steel bar of pull rod, adapter sleeve be recoverable also.
Description of drawings:
Fig. 1 is the schematic diagram after termination intumescent recoverable anchor rod assembles.
Fig. 2 is termination intumescent recoverable anchor rod countersunk head crab-bolt, adapter sleeve and reinforcing steel bar of pull rod connection diagram.
Fig. 3 is the expansion tube schematic diagram of termination intumescent recoverable anchor rod.
Fig. 4 is fastening nut, and the countersunk head crab-bolt is pulled back, and expansion tube is at the anchor hole schematic diagram that expands.
In figure, 1. nut, 2. backing plate, 3. adapter sleeve, 4. push pipe, 5. pad pipe, 6. expansion tube, 7. countersunk head crab-bolt, 8. rectangle termination, 9. reinforcing steel bar of pull rod
Below in conjunction with accompanying drawing, the present invention is described further.
1. as shown in Figure 1, the present invention is mainly by the countersunk head crab-bolt, expansion tube, the pad pipe, adapter sleeve, push pipe and reinforcing steel bar of pull rod form, after the anchor hole construction pore-forming, first the countersunk head crab-bolt is threaded with reinforcing steel bar of pull rod, the length of reinforcing steel bar of pull rod is looked hole depth needs available adapter sleeve connection to lengthen, then put successively expansion tube from the reinforcing steel bar of pull rod free end, pad pipe and push pipe, after installation, anchor bar body is sent to the hole depth of design, then install backing plate and nut in the aperture, at this moment constantly fastening nut makes the countersunk head crab-bolt pull back, expansion tube is squeezed swollen by the taper major part of countersunk head crab-bolt by force, formation expansion termination.Friction bond stress between this expansion termination and rock-soil layer is stronger, and nut is twisted to such an extent that tighter expansion tube expands just more severely.
After anchor pole use task is completed, unscrew nut, take off backing plate, extract push pipe out, then will be arranged on the termination, square-section of reinforcing steel bar of pull rod with the tool of pulling of square bayonet socket, tool is pulled in derotation, unloads recovery and the recycling of reinforcing steel bar of pull rod to realize push pipe and reinforcing steel bar of pull rod.
Claims (5)
1. a termination intumescent recoverable anchor rod, mainly be comprised of countersunk head crab-bolt, expansion tube, pad pipe, push pipe and reinforcing steel bar of pull rod.Wherein the end of countersunk head crab-bolt is made as the taper major part, and the other end has the internal thread shrinkage pool in order to be connected with reinforcing steel bar of pull rod; The end of expansion tube has the open slot of decile; Pad tube wall Thickness Ratio expansion tube is larger; Adapter sleeve is made by hollow steel, band internal thread silk mouth; The external thread wire mouth all is with at the reinforcing steel bar of pull rod two ends, and orifice end thread segment head is set to square sectional.It is characterized in that, after the anchor hole pore-forming, countersunk head crab-bolt, adapter sleeve and reinforcing steel bar of pull rod are threaded, put successively expansion tube, pad pipe and push pipe, then anchor bar body is sent to the hole depth of design, loaded onto backing plate, fastening nut, at this moment expansion tube is constantly squeezed swollenly by force by the countersunk head crab-bolt, forms the expansion termination.After anchor pole use task is completed, can also recovery and the recycling of derotation reinforcing steel bar of pull rod to realize push pipe and reinforcing steel bar of pull rod.
2. according to claim 1. described termination intumescent recoverable anchor rod, it is characterized in that, countersunk head crab-bolt head is the taper major part, and the other end is provided with internal thread silk mouth, can be threaded with reinforcing steel bar of pull rod, facilitate the anchoring task to complete derotation reinforcing steel bar of pull rod realization afterwards and reclaim.
3. according to claim 1. described termination intumescent recoverable anchor rod, it is characterized in that, expansion tube first half section is provided with the cross opening, and the cross opening extends to the expansion tube center and is provided with stress and concentrates the hole, and the second half section is provided with an open slot.
4. according to claim 1. described termination intumescent recoverable anchor rod, it is characterized in that, thickness is movable part greater than the pad pipe of expansion tube diameter, its position in anchor hole can arrange arbitrarily by the length of push pipe.
5. according to claim 1. described termination intumescent recoverable anchor rod, it is characterized in that, the reinforcing steel bar of pull rod orifice end is provided with the head of square sectional, can coordinate with the tool of pulling of being furnished with square bayonet socket, the derotation reinforcing steel bar of pull rod is so that pull bar screws out the recovery of the existing reinforcing steel bar of pull rod of internal thread silk cause for gossip of countersunk head crab-bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374056XA CN103103989A (en) | 2011-11-12 | 2011-11-12 | End-expansive recoverable anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374056XA CN103103989A (en) | 2011-11-12 | 2011-11-12 | End-expansive recoverable anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103103989A true CN103103989A (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110374056XA Pending CN103103989A (en) | 2011-11-12 | 2011-11-12 | End-expansive recoverable anchor rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN103103989A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047287A (en) * | 2014-05-26 | 2014-09-17 | 江苏金海新能源科技有限公司 | Prestressed sleeve self-lock anchor rod |
| CN104805849A (en) * | 2015-05-07 | 2015-07-29 | 重庆交通大学 | Side slope-supporting system |
| CN104818725A (en) * | 2015-05-07 | 2015-08-05 | 重庆交通大学 | Slope slip mass locking system |
| CN104818723A (en) * | 2015-05-07 | 2015-08-05 | 重庆交通大学 | Anti-sliding pile for slope support |
| CN106703850A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Novel hydraulic expanded recyclable anchor rod |
| CN109083667A (en) * | 2018-07-27 | 2018-12-25 | 南京灵雀智能制造有限公司 | A kind of composite hollow anchor structure |
| CN109707424A (en) * | 2019-02-25 | 2019-05-03 | 河南省交通规划设计研究院股份有限公司 | A kind of flexible self-anchored type prestressed anchor of the anti-hook of band |
| CN112610255A (en) * | 2020-12-11 | 2021-04-06 | 中铁二十局集团有限公司 | Tunnel construction method for penetrating through weak and broken surrounding rock |
| CN112761145A (en) * | 2020-12-23 | 2021-05-07 | 苏交科集团股份有限公司 | Self-adaptive anchoring device for deformed slope and construction method thereof |
| CN113802473A (en) * | 2020-06-17 | 2021-12-17 | 檀国大学校产学协力团 | Anchor rod comprising a plurality of expansion sleeves |
-
2011
- 2011-11-12 CN CN201110374056XA patent/CN103103989A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047287A (en) * | 2014-05-26 | 2014-09-17 | 江苏金海新能源科技有限公司 | Prestressed sleeve self-lock anchor rod |
| CN104805849A (en) * | 2015-05-07 | 2015-07-29 | 重庆交通大学 | Side slope-supporting system |
| CN104818725A (en) * | 2015-05-07 | 2015-08-05 | 重庆交通大学 | Slope slip mass locking system |
| CN104818723A (en) * | 2015-05-07 | 2015-08-05 | 重庆交通大学 | Anti-sliding pile for slope support |
| CN104818723B (en) * | 2015-05-07 | 2016-07-27 | 重庆交通大学 | Slope retaining friction pile |
| CN106703850A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Novel hydraulic expanded recyclable anchor rod |
| CN109083667A (en) * | 2018-07-27 | 2018-12-25 | 南京灵雀智能制造有限公司 | A kind of composite hollow anchor structure |
| WO2020019840A1 (en) * | 2018-07-27 | 2020-01-30 | 南京灵雀智能制造有限公司 | Composite hollow anchor rod structure |
| CN109707424A (en) * | 2019-02-25 | 2019-05-03 | 河南省交通规划设计研究院股份有限公司 | A kind of flexible self-anchored type prestressed anchor of the anti-hook of band |
| CN113802473A (en) * | 2020-06-17 | 2021-12-17 | 檀国大学校产学协力团 | Anchor rod comprising a plurality of expansion sleeves |
| CN112610255A (en) * | 2020-12-11 | 2021-04-06 | 中铁二十局集团有限公司 | Tunnel construction method for penetrating through weak and broken surrounding rock |
| CN112761145A (en) * | 2020-12-23 | 2021-05-07 | 苏交科集团股份有限公司 | Self-adaptive anchoring device for deformed slope and construction method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |