CN204023566U - A kind of secondary high-pressure slip-casting enlarged footing anchor pole - Google Patents
A kind of secondary high-pressure slip-casting enlarged footing anchor pole Download PDFInfo
- Publication number
- CN204023566U CN204023566U CN201420380867.XU CN201420380867U CN204023566U CN 204023566 U CN204023566 U CN 204023566U CN 201420380867 U CN201420380867 U CN 201420380867U CN 204023566 U CN204023566 U CN 204023566U
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- CN
- China
- Prior art keywords
- bag
- anchor
- rod body
- anchor rod
- casting
- Prior art date
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- Expired - Fee Related
Links
- 238000007569 slipcasting Methods 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 23
- 238000004873 anchoring Methods 0.000 abstract description 18
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
A kind of secondary high-pressure slip-casting enlarged footing anchor pole, belongs to a kind of novel anchor structure.It comprises anchor rod body, slip casting bag and Grouting Pipe, its key technology is that anchor rod body leading portion is provided with centering slip casting bag, anchor rod body back segment is provided with secondary grouting bag, anchor rod body is provided with once grouting pipe and secondary grouting pipe, the outlet of once grouting pipe is positioned at centering slip casting bag anchor rod body foremost, and the outlet of secondary grouting pipe is positioned at secondary grouting bag Inner Front End.The beneficial effect that the utility model has is: after once grouting solidifies, adopt secondary high-pressure to the slip casting of secondary grouting bag, compacted for enlarged footing back segment cement-soil or folds in a garment split by high-pressure slip-casting, anchoring body is made to apply precompression to the soil body, strengthen the frictional resistance of anchoring body and the soil body, thus improve anti-pulling of anchor bar.
Description
Technical field
A kind of secondary high-pressure slip-casting enlarged footing anchor pole, belongs to a kind of novel anchor structure.This anchor structure relates generally to the pattern foundation pit supporting structure of construction work, slope retaining and resisting buoyancy of foundation engineering field.
Background technology
Existing for the anchor pole in underground construction and side slope consolidation projects, the main adhesion stress of anchoring section and surrounding soil and the frictional force of relying on transmits load, belongs to friction rock bolt.Its shortcoming is: 1, the factor such as the size of the anchored force length that depends on anchoring section and the character of the soil body that contacts with anchoring section, and as run into special soft soil, then consolidation effect is not good; 2, ordinary high pressure sprays enlarged footing anchor pole to there is soil cement intensity low, the problem of bond stress difference between anchoring body and the body of rod; 3, formula anchor pole is assisted to there is anchoring body and surrounding soil bond stress is poor, the uncompacted problem in pressurized end.
Summary of the invention
Problem to be solved in the utility model is exactly provide a kind of anchor pole with more large pulling resistance for above deficiency.Its technical scheme is as follows:
It comprises anchor rod body, slip casting bag and Grouting Pipe, and anchor rod body is set with 2 ~ 3 P anchors, and guiding cap is equipped with in anchor rod body front end.Its key technology is that anchor rod body leading portion is provided with centering slip casting bag, anchor rod body back segment is provided with secondary grouting bag, anchor rod body is provided with once grouting pipe and secondary grouting pipe, the outlet of once grouting pipe is positioned at centering slip casting bag anchor rod body foremost, and the outlet of secondary grouting pipe is positioned at secondary grouting bag Inner Front End.
Compared with prior art, the beneficial effect that the utility model has is:
1, pass through centering slip casting bag 3 grout injection, the centering slip casting bag 3 be fixed on the body of rod of anchor bar body front end is filled, centering slip casting bag 3 struts by injecting cement paste, because centering slip casting bag 3 is positioned at anchor bar body front end, make anchor bar body placed in the middle in reaming section front end after strutting, because rear end anchor hole is positioned at the central authorities of reaming, therefore anchor rod body is placed in the middle.
2, because P anchor is positioned at centering slip casting bag 3, be neat slurry in centering slip casting bag 3 after slip casting, P anchor and cement-soil separated, therefore P anchor is wrapped up by cement paste, ensures the bond stress of anchoring body and anchor rod body.
3, after once grouting solidifies, adopt secondary high-pressure to secondary grouting bag 2 slip casting, compacted for enlarged footing back segment cement-soil or folds in a garment split by high-pressure slip-casting, make anchoring body apply precompression to the soil body, strengthen the frictional resistance of anchoring body and the soil body, thus improve anti-pulling of anchor bar.
4, high-pressure slip-casting is to enlarged footing by pressure side Shi Hanzhang, is out of shape less after making enlarged footing tension.
5, from this, the utility model anchoring body is made up of three parts, one is the cement-soil that pressure-injected cement slurry is formed with soil body cutting, two is the injecting cement pastes formed in enlarged footing front end after once grouting in centering slip casting bag 3, and three is the injecting cement pastes formed in enlarged footing rear end after secondary grouting bag 2 slip casting.In centering slip casting bag 3, once grouting body is extruded cement-soil part; In secondary grouting bag 2 injecting cement paste to cement-soil play extruding and folds in a garment split effect.
6, anchor bar body adopts the Prestressed anchor rope with pressure dispersing of soap-free emulsion polymeization anchor rod body composition, and when making rockbolt stress, first stressed at soil layer deep soil, deep soil is perturbed less, can provide more large pulling resistance.
7, in sum, the utility model product has that uplift resistance is large, after stretch-draw displacement little, the advantages such as reliability is high, safety good, cost is low.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is Figure 1A-A sectional view;
Fig. 3 is Figure 1B-B sectional view;
Fig. 4 is that the utility model has centering slip casting bag magnified partial view;
Fig. 5 is that the utility model has secondary grouting bag magnified partial view;
Fig. 6 is the utility model using state schematic diagram.
Detailed description of the invention
See Fig. 1 ~ Fig. 6, the utility model comprises anchor rod body 1, slip casting bag and Grouting Pipe, and anchor rod body 1 is set with 2 ~ 3 P anchors 4, and guiding cap 6 is equipped with in anchor rod body front end, mineralization pressure decentralized soap-free emulsion polymeization anchor rod body.Its key technology is that anchor rod body 1 leading portion is provided with centering slip casting bag 3, anchor rod body 1 back segment is provided with secondary grouting bag 2, anchor rod body is provided with once grouting pipe 5 and secondary grouting pipe 8, the outlet of once grouting pipe 5 is positioned at centering slip casting bag 3 anchor rod body foremost, and the outlet of secondary grouting pipe 8 is positioned at secondary grouting bag 2 Inner Front End.
Described P anchor 4 is positioned at centering slip casting bag 3.
Described anchor rod body is provided with stack 7, and the outlet of stack 7 is positioned at centering slip casting bag 3 rear end.
Described centering slip casting bag 3 and secondary grouting bag 2 are bags of sealing.
Described centering slip casting bag 3 and secondary grouting bag 2 are cylindrical body.
Described secondary grouting pipe 8 adopts steel pipe.
The utility model secondary high-pressure slip-casting enlarged footing anchor rod construction method is as follows:
1. pore-creating: by designing requirement pore-creating, aperture will be mated with anchoring section inside and outside anchor bar body, anchor bar body leading portion is reaming anchoring section (grouted part), anchor bar body back segment is outer anchoring section, outer anchoring section and common bolt similar, the main anchoring section that relies on provides anchored force with the frictional resistance contacting the soil body.First the conventional mode of creeping into is adopted to form the anchor hole 9 that aperture is 130 ~ 150mm, anchor hole actual grade dark 0.2m more general than the Soil Anchor Design degree of depth, then high-pressure rotary-spray clear water is adopted, bottom anchor hole, by design length, injection cutting reaming is carried out to the soil body, form reaming anchoring section 10, counter bore diameter is φ 500 ~ 600mm, and reaming anchoring section 10 length is 2 ~ 3m; After high-pressure jetting reaming completes, then with cement paste churning displacement mud, form enlarged footing;
2. the body of rod is laid: after pore-creating completes, take out jet pipe immediately, adopt clear water to clean to non-reaming section, immediately anchor rod body is at the uniform velocity pushed in hole after having cleaned, until deliver to projected depth, anchor pole protruded length should meet the requirement of waist rail, pedestal size and tensioning fixation; Anchor pole adopts pressure dispersing type soap-free emulsion polymeization anchor rod body, and P anchor 4 is placed in enlarged footing front end;
3. centering slip casting bag slip casting: anchor bar body completes slip casting in centering slip casting bag by once grouting pipe 5 after laying and putting in place in time, when slurries are overflowed in stack 7 aperture, close once grouting pipe 5, carry out slip casting again, when slurries consumption reaches design quantity, stop slip casting, centering slip casting bag 3 struts, thus reaches the effect of anchor bar body centering;
4. secondary grouting: carry out high-pressure slip-casting by secondary grouting pipe 8 pairs of secondary grouting bags 2 after once grouting initial set, secondary grouting bag 2 is expanded, the extruding periphery soil body, stops slip casting when grouting amount and grouting pressure reach requirement;
5. tensioning fixation: this is last procedure of the utility model construction, need before formal stretch-draw to carry out pre-stretch-draw, in order to reach the tensioning lock definite value of designing requirement after locking, locking load should higher than tensioning lock definite value, according to the mensuration of counter stress loss, 1.1 times ~ 1.2 times of general desirable tensioning lock definite value.
Claims (6)
1. a secondary high-pressure slip-casting enlarged footing anchor pole, comprise anchor rod body (1), slip casting bag and Grouting Pipe, upper suit 2 ~ 3 the P anchors (4) of anchor rod body (1), guiding cap (6) is equipped with in anchor rod body front end, it is characterized in that anchor rod body (1) leading portion is provided with centering slip casting bag (3), anchor rod body (1) back segment is provided with secondary grouting bag (2), anchor rod body is provided with once grouting pipe (5) and secondary grouting pipe (8), the outlet of once grouting pipe (5) is positioned at centering slip casting bag (3) anchor rod body foremost, the outlet of secondary grouting pipe (8) is positioned at secondary grouting bag (2) Inner Front End.
2. secondary high-pressure slip-casting enlarged footing anchor pole according to claim 1, is characterized in that P anchor (4) is positioned at centering slip casting bag (3).
3. secondary high-pressure slip-casting enlarged footing anchor pole according to claim 1, it is characterized in that anchor rod body is provided with stack (7), the outlet of stack (7) is positioned at centering slip casting bag (3) rear end.
4. secondary high-pressure slip-casting enlarged footing anchor pole according to claim 1, is characterized in that centering slip casting bag (3) and secondary grouting bag (2) are the bags of sealing.
5. secondary high-pressure slip-casting enlarged footing anchor pole according to claim 1, is characterized in that centering slip casting bag (3) and secondary grouting bag (2) are cylindrical body.
6. secondary high-pressure slip-casting enlarged footing anchor pole according to claim 1, is characterized in that secondary grouting pipe (8) adopts steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380867.XU CN204023566U (en) | 2014-06-16 | 2014-07-10 | A kind of secondary high-pressure slip-casting enlarged footing anchor pole |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320398 | 2014-06-16 | ||
| CN201420320398.2 | 2014-06-16 | ||
| CN201420380867.XU CN204023566U (en) | 2014-06-16 | 2014-07-10 | A kind of secondary high-pressure slip-casting enlarged footing anchor pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204023566U true CN204023566U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420380867.XU Expired - Fee Related CN204023566U (en) | 2014-06-16 | 2014-07-10 | A kind of secondary high-pressure slip-casting enlarged footing anchor pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204023566U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074190A (en) * | 2014-06-16 | 2014-10-01 | 成都四海岩土工程有限公司 | Secondary high-pressure grouting expansion bit anchor rod and construction method thereof |
| CN104912072A (en) * | 2015-06-23 | 2015-09-16 | 新乡市嘉汇科技有限公司 | Integrated double-bag enlarged anchor rod |
| CN109440832A (en) * | 2018-11-27 | 2019-03-08 | 福建卓越建设工程开发有限公司 | Anchor cable can be recycled pressure dispersing type pouch and expand body anti-floating pile and construction method |
| CN109518689A (en) * | 2019-01-09 | 2019-03-26 | 甘肃第六建设集团股份有限公司 | Sandstone layer is long to expand the high-strength single reinforcement anti-float anchor rod construction method of body |
-
2014
- 2014-07-10 CN CN201420380867.XU patent/CN204023566U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074190A (en) * | 2014-06-16 | 2014-10-01 | 成都四海岩土工程有限公司 | Secondary high-pressure grouting expansion bit anchor rod and construction method thereof |
| CN104074190B (en) * | 2014-06-16 | 2016-10-05 | 成都四海岩土工程有限公司 | A kind of secondary high-pressure slip-casting enlarged footing anchor pole and construction method |
| CN104912072A (en) * | 2015-06-23 | 2015-09-16 | 新乡市嘉汇科技有限公司 | Integrated double-bag enlarged anchor rod |
| CN109440832A (en) * | 2018-11-27 | 2019-03-08 | 福建卓越建设工程开发有限公司 | Anchor cable can be recycled pressure dispersing type pouch and expand body anti-floating pile and construction method |
| CN109518689A (en) * | 2019-01-09 | 2019-03-26 | 甘肃第六建设集团股份有限公司 | Sandstone layer is long to expand the high-strength single reinforcement anti-float anchor rod construction method of body |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |