CN204435372U - A kind of prestress anchorage cable - Google Patents
A kind of prestress anchorage cable Download PDFInfo
- Publication number
- CN204435372U CN204435372U CN201520060969.8U CN201520060969U CN204435372U CN 204435372 U CN204435372 U CN 204435372U CN 201520060969 U CN201520060969 U CN 201520060969U CN 204435372 U CN204435372 U CN 204435372U
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- China
- Prior art keywords
- hole
- steel strand
- grout stop
- anchorage cable
- bellows
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Abstract
The utility model discloses a kind of prestress anchorage cable, comprise grout stop, anchoring section grouting pipe and some steel strand, grout stop center has anchoring section injected hole, and anchoring section grouting pipe is sealed connected together through anchoring section injected hole and grout stop; The surrounding of anchoring section injected hole has and some steel strand holes, and steel strand are sealed connected together through steel strand hole and grout stop; The outside of steel strand is arranged with bellows, and one end and the grout stop of bellows are tightly connected, and the other end is provided with grouting device; The outside of bellows is also provided with geotextiles, and one end of geotextiles is connected with grouting device, and the periphery of the other end and grout stop is tightly connected; Grout stop is also provided with and returns slurry hole, and return slurry hole between bellows and geotextiles.The utility model effectively ensures compactness and the quality of anchoring section, avoids slurries waste when mending slurry, better reduces the stress loss of prestress anchorage cable, make construction safer.
Description
Technical field
The utility model belongs to geotechnical engineering support technology field, is specifically related to a kind of prestress anchorage cable.
Background technology
In geotechnical engineering supporting, the Rock And Soil of usual employing prestress anchorage cable to periphery is reinforced, traditional prestress anchorage cable adopts the method to the slip casting of grout stop internal and external parts difference, like this to the anchorage length of grouted part and quality requirement higher, easily grouted part is damaged when prestressed stretch-draw; Simultaneously, generally the drilling depth of anchor cable is comparatively dark, can there will be underground water within the scope of boring, and traditional device is difficult to underground water thoroughly to get rid of boring, the concentration of slip casting can be diluted, can not ensure the concrete intensity of anchoring section, and when drilling depth is relatively shallow, in boring, air content is higher, if the air in hole can not be discharged, anchoring section slip casting leakiness can be made, leachy generation, anchoring section concrete strength also can be caused to decline.
Injection hole sealing is carried out after prestress anchorage cable tensioning fixation, the method of injection hole sealing conventional is at present that reserved aperture is by filling system slip casting, this preformed hole easily blocks, and after need waiting for that slip casting terminates, just sealing off and covering anchorage can be carried out, this makes the time of sealing off and covering anchorage longer, causes the corrosion of steel strand, affects its mechanical property and application life.
Utility model content
In order to overcome the defect that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of prestress anchorage cable, the utility model adopts the mode of twice slip casting, the compactness of effective guarantee anchoring section and quality, avoid slurries waste when mending slurry, the stress loss of better reduction prestress anchorage cable, makes construction more safe and reliable.
For achieving the above object, the utility model adopts following technical scheme:
A kind of prestress anchorage cable, comprise grout stop, anchoring section grouting pipe and some steel strand, grout stop center has anchoring section injected hole, and anchoring section grouting pipe is sealed connected together through anchoring section injected hole and grout stop; The surrounding of anchoring section injected hole has some steel strand holes, and steel strand are sealed connected together through steel strand hole and grout stop; The outside of steel strand is arranged with bellows, and one end and the grout stop of bellows are tightly connected, and the other end is provided with grouting device; The outside of bellows is also provided with geotextiles, and one end of geotextiles is connected with grouting device, and the periphery of the other end and grout stop is tightly connected; Grout stop is also provided with and returns slurry hole, and return slurry hole between bellows and geotextiles.
Further, steel strand are greater than the length of anchoring section grouting pipe through anchoring section injected hole through the length in steel strand hole, and one end that steel strand pass steel strand hole is fixed together by fastening devices.
Further, described grouting device comprises base plate, and base plate is fixed with outer sleeve, is arranged with inner sleeve in outer sleeve; Described outer sleeve wall offers the first air vent, inner sleeve wall offers the second air vent and stretch-draw section injected hole.
Further, one end that bellows is connected with grouting device is set on inner sleeve, and bellows all has with stretch-draw section injected hole corresponding position the through hole be communicated with it with the second air vent.
Further, one end that geotextiles is connected with grouting device is set on outer sleeve, and geotextiles has with the first air vent corresponding position the through hole be communicated with it.
Further, when deployed, prestress anchorage cable is through the anchor upsetting be arranged on around petrosal foramen or native hole, and base plate is stuck in outside anchor upsetting, and described anchor upsetting is provided with the air duct be communicated with the first air vent and the stretch-draw section slip casting passage be communicated with stretch-draw section injected hole.
Further, described steel strand are four, and the steel strand hole corresponding with it is four.
Further, the diameter returning slurry hole is 5cm, and the diameter of outer sleeve is 25 ~ 30cm, and the diameter of inner sleeve is 20cm, and the diameter of the first air vent, the second air vent and stretch-draw section injected hole is 5cm.
Further, inner sleeve is than overcoat tube length 20cm.
Compared with prior art, the utility model has following useful technique effect:
The utility model is by arranging grout stop and returning slurry hole, carry out slip casting in two steps, when utilizing Anchoring part filling system to carry out slip casting to anchoring section, utilize to starch draining, to starch the principle of exhaust, the water of bore inner and air can be discharged along reserved slurry hole of returning, cement paste can be full of the geotextiles of anchoring section and stretch-draw section and the interlayer of bellows, so both ensure that the slurries of anchoring section can not be seeped into stretch-draw section along the gap of grout stop and drill hole wall, also can ensure that stretch-draw section there will not be the situation of spillage in the hole caused due to the loose built on stilts or fragmentation of Rock And Soil internal construction, anchoring section quality can also be ensured, the compactness of effective guarantee anchoring section.
Further, part due to slip casting first comprises the sandwich portion of grouted part and stretch-draw section, such equivalence think that the contact portion of anchoring section and drill hole wall increases, when anchorage cable stretching, the transmission of power expands whole drill hole wall to, add the field of load of Rock And Soil around, more can ensure the construction quality of prestress anchorage cable, avoid owing to loosening the prestress anchorage cable relaxation caused between the soil body and grouted part.
Further, grouting device of the present utility model is arranged near hell, ensure that the feasibility of the utility model grouting method, slip casting first and second pulp feeding complete parttion, can not have an impact each other, fills closely knit when can ensure again to mend slurry in bellows, prevent anchorage cable stretching part by corrosion failure, avoid slurries waste when mending slurry, better reduce the stress loss of prestress anchorage cable, make construction safer.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is grout stop schematic cross-section of the present utility model;
Fig. 3 is grouting device top view of the present utility model;
Fig. 4 is grouting device lateral view of the present utility model;
Fig. 5 is grouting device front view of the present utility model.
Wherein, 1, stretch-draw section; 2, anchoring section; 3, grouting device; 4, anchor pier; 5, geotextiles; 6, bellows; 7, steel strand; 8, anchoring section grouting pipe; 9, grout stop; 10, air duct; 11, stretch-draw section slip casting passage; 12, interlayer; 31, outer sleeve; 32, inner sleeve; 33, base plate; 34, the first air vent; 35, the second air vent; 36, stretch-draw section injected hole; 91, steel strand hole; 92, anchoring section injected hole; 93, slurry hole is returned.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
See Fig. 1 to Fig. 5, a kind of prestress anchorage cable, comprise grout stop 9, anchoring section grouting pipe 8 and some steel strand 7, grout stop 9 center has anchoring section injected hole 92, and anchoring section grouting pipe 8 is sealed connected together through anchoring section injected hole 92 and grout stop 9; The surrounding of anchoring section injected hole 92 has and some steel strand holes 91, and steel strand 7 are sealed connected together through steel strand hole 91 and grout stop 9, steel strand 7 are greater than the length of anchoring section grouting pipe 8 through anchoring section injected hole 92 through the length in steel strand hole 91, and one end that steel strand 7 pass steel strand hole 91 is fixed together by fastening devices;
The outside of steel strand 7 is arranged with bellows 6, and one end and the grout stop 9 of bellows 6 are tightly connected, and the other end is provided with grouting device 3; The outside of bellows 6 is also provided with geotextiles 5, one end of geotextiles 5 is connected with grouting device 3, and the periphery of the other end and grout stop 9 is tightly connected, and described grouting device 3 comprises base plate 33, base plate 33 is fixed with outer sleeve 31, in outer sleeve 31, is arranged with inner sleeve 32; Described outer sleeve 31 wall offers the first air vent 34, inner sleeve 32 wall offers the second air vent 35 and stretch-draw section injected hole 36, one end that bellows 6 is connected with grouting device 3 is set on inner sleeve 32, and bellows 6 all has with stretch-draw section injected hole 36 corresponding position the through hole be communicated with it with the second air vent 35, one end that geotextiles 5 is connected with grouting device 3 is set on outer sleeve 31, and geotextiles 5 has with the first air vent 34 corresponding position the through hole be communicated with it; Grout stop 9 is also provided with and returns slurry hole 93, and return slurry hole 93 between bellows 6 and geotextiles 5;
When deployed, prestress anchorage cable is placed in petrosal foramen or native hole through anchor upsetting 4, and base plate 33 is stuck in outside anchor upsetting 4, and described anchor upsetting 4 is provided with the air duct 10 be communicated with the first air vent 34 and the stretch-draw section slip casting passage 11 be communicated with stretch-draw section injected hole 36.
Wherein, steel strand 7 are four, the steel strand hole 91 corresponding with it is four (steel strand number can change with the requirement of working design), the diameter returning slurry hole 93 is 5cm, the diameter of outer sleeve 31 is 25 ~ 30cm, the diameter of inner sleeve 32 is 20cm, and the diameter of the first air vent 34, second air vent 35 and stretch-draw section injected hole 36 is 5cm, inner sleeve 32 20cm longer than outer sleeve 31.
Below implementation process of the present utility model is described in further detail:
Boring soil gets after hole completes, assembling prestress anchorage cable, after steel strand 7 and grout stop 9 have been assembled, sheathed bellows 6, bellows 6 and grout stop 9 junction use structure glue to be tightly connected, after geotextiles 5 is overlapped outside, the grouted part side structure glue of geotextiles 5 bottom and grout stop 9 is sealed, ensure that the slurry hole 93 of returning on grout stop 9 is communicated with anchoring section 2 and stretch-draw section 1, return the surrounding sealing of slurry hole 93, ensure that grout stop 9 is air tight, the diameter returning slurry hole 93 is 5cm, between bellows 6 and geotextiles 5.
Prestress anchorage cable transfers hand-hole after having assembled, subsequently grouting device 3 is installed, this grouting device 3 is welded by the base plate 33 of inner sleeve 32, outer sleeve 31 and one piece of perforate, baseboard material is steel sheet, inside and outside sleeve is coaxial, inner sleeve 32 diameter is 20cm, the diameter of outer sleeve 31 is 25 ~ 30cm, the length 20cm longer than outer sleeve 31 of inner sleeve 32, outer sleeve 31 has first air vent 34 of a diameter 5cm, urceolus has two diameters to be the second air vent 35 and the stretch-draw section injected hole 36 of 5cm, for the inner slip casting of bellows 6.First bellows 6 is connected with the inner core 32 of grouting device 3, the internal diameter 1-2cm larger than the external diameter of inner core of bellows, uses iron wire colligation; Use iron wire colligation to be connected geotextiles 5 and urceolus 31 again, ensure that inside and outside sleeve reserving hole channel is all in communication with the outside.
Install rear beginning slip casting, anchoring section grouting pipe 8 pairs of grouted part are utilized to carry out slip casting, the water of bore inner and air can be got rid of along the slurry hole 93 of returning of grout stop 9 by cement paste, finally be rejected to outside hole, cement paste can be full of the interlayer 12 of grouted part and stretch-draw section, this ensure that cement paste can not in the hole that loose built on stilts or fragmentation causes due to Rock And Soil internal construction of stretch-draw section spillage, after pore filling is full, first time slip casting terminates.
Carry out the slip casting of second stage after anchorage cable stretching, utilize grouting device 3 and the 11 pairs of inner slip castings of bellows 6 of stretch-draw section slip casting passage, until the second air vent 35 return slurry concentration identical with entering to starch concentration.
Claims (9)
1. a prestress anchorage cable, it is characterized in that, comprise grout stop (9), anchoring section grouting pipe (8) and some steel strand (7), grout stop (9) center has anchoring section injected hole (92), and anchoring section grouting pipe (8) is sealed connected together through anchoring section injected hole (92) and grout stop (9); The surrounding of anchoring section injected hole (92) has some steel strand holes (91), and steel strand (7) are sealed connected together through steel strand hole (91) and grout stop (9); The outside of steel strand (7) is arranged with bellows (6), and one end and the grout stop (9) of bellows (6) are tightly connected, and the other end is provided with grouting device (3); The outside of bellows (6) is also provided with geotextiles (5), and one end of geotextiles (5) is connected with grouting device (3), and the periphery of the other end and grout stop (9) is tightly connected; Grout stop (9) is also provided with return slurry hole (93), and return slurry hole (93) be positioned between bellows (6) and geotextiles (5).
2. a kind of prestress anchorage cable according to claim 1, it is characterized in that, steel strand (7) are greater than the length of anchoring section grouting pipe (8) through anchoring section injected hole (92) through the length of steel strand hole (91), and steel strand (7) are fixed together by fastening devices through the one end of steel strand hole (91).
3. a kind of prestress anchorage cable according to claim 1, it is characterized in that, described grouting device (3) comprises base plate (33), base plate (33) is fixed with outer sleeve (31), in outer sleeve (31), is arranged with inner sleeve (32); Described outer sleeve (31) wall offers the first air vent (34), inner sleeve (32) wall offers the second air vent (35) and stretch-draw section injected hole (36).
4. a kind of prestress anchorage cable according to claim 3, it is characterized in that, one end that bellows (6) is connected with grouting device (3) is set on inner sleeve (32), and bellows (6) above all has with stretch-draw section injected hole (36) corresponding position the through hole be communicated with it with the second air vent (35).
5. a kind of prestress anchorage cable according to claim 4, it is characterized in that, one end that geotextiles (5) is connected with grouting device (3) is set on outer sleeve (31), and geotextiles (5) above has with the first air vent (34) corresponding position the through hole be communicated with it.
6. a kind of prestress anchorage cable according to claim 5, it is characterized in that, when deployed, prestress anchorage cable is through the anchor upsetting (4) be arranged on around petrosal foramen or native hole, base plate (33) is stuck in anchor upsetting (4) outside, and described anchor upsetting (4) is provided with the air duct (10) be communicated with the first air vent (34) and stretch-draw section slip casting passage (11) be communicated with stretch-draw section injected hole (36).
7. a kind of prestress anchorage cable according to claim 1, is characterized in that, described steel strand (7) are four, and the steel strand hole (91) corresponding with it is four.
8. a kind of prestress anchorage cable according to claim 3, it is characterized in that, the diameter returning slurry hole (93) is 5cm, the diameter of outer sleeve (31) is 25 ~ 30cm, the diameter of inner sleeve (32) is 20cm, and the diameter of the first air vent (34), the second air vent (35) and stretch-draw section injected hole (36) is 5cm.
9. a kind of prestress anchorage cable according to claim 3, is characterized in that, inner sleeve (32) 20cm longer than outer sleeve (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060969.8U CN204435372U (en) | 2015-01-28 | 2015-01-28 | A kind of prestress anchorage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060969.8U CN204435372U (en) | 2015-01-28 | 2015-01-28 | A kind of prestress anchorage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204435372U true CN204435372U (en) | 2015-07-01 |
Family
ID=53603259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520060969.8U Expired - Fee Related CN204435372U (en) | 2015-01-28 | 2015-01-28 | A kind of prestress anchorage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204435372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561943A (en) * | 2022-03-13 | 2022-05-31 | 深圳市工勘岩土集团有限公司 | Construction method for anchoring pre-stressed anchor rod body for free section post-grouting |
-
2015
- 2015-01-28 CN CN201520060969.8U patent/CN204435372U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561943A (en) * | 2022-03-13 | 2022-05-31 | 深圳市工勘岩土集团有限公司 | Construction method for anchoring pre-stressed anchor rod body for free section post-grouting |
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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: 20150701 Termination date: 20160128 |
|
| EXPY | Termination of patent right or utility model |