CN204982878U - A back mud jacking pressure type stock for slope reinforcement - Google Patents
A back mud jacking pressure type stock for slope reinforcement Download PDFInfo
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- CN204982878U CN204982878U CN201520667315.1U CN201520667315U CN204982878U CN 204982878 U CN204982878 U CN 204982878U CN 201520667315 U CN201520667315 U CN 201520667315U CN 204982878 U CN204982878 U CN 204982878U
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- pipe
- mud jacking
- jacking
- post jacking
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- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The utility model relates to a back mud jacking pressure type stock for slope reinforcement belongs to the building engineering supporting device field, and this design is personally experienced sth. Part of the body with the back mud jacking including construction package, grouting segment, and end and loading board mounting hole fixed connection are connected through its lower extreme to the steel pull rod, uncovered loading board and this board fixed connection of passing of lower extreme of slip casting pipe, the hypomere pipe wall of back mud jacking pipe is equipped with the mud jacking hole, and the lower end seals, is somebody's turn to do back mud jacking pipe through locating support location setting at the periphery of slip casting pipe, constitute and structure subassembly, arrange this construction package in the side slope bolthole, conventional concrete mortar pours into into through the slip casting pipe and forms grouting segment, the mixed mortar of high -molecular polymer forms the back mud jacking body of establishing hypomere pipe wall the same length in mud jacking hole with back mud jacking pipe through the mud jacking hole of back mud jacking pipe hypomere pipe wall, packings of impressing, infiltration in grouting segment periphery and bottom, and the compressive strength of this design improvement grouting segment bottom strengthens the grouting segment and the bond stress of the soil body on every side to improve the anchor power of stock.
Description
Technical field
A kind of post jacking pressure type anchor rod for slope reinforcement of the utility model, belongs to construction work suspension device field.
Background technology
Anchor pole is the main support unit of one in side slope consolidation projects.Anchor pole is different by stress state residing during slip casting work, can be divided into tension type anchor pole and pressure type anchor rod.
The reinforcing bar of tension type anchor pole and steel strand directly bond with injecting cement paste, and because when working, the injecting cement paste of anchoring section is in tension state, injecting cement paste easily occurs that drawing crack is stitched, and anchor pole antiseptic property is poor.
Pressure type anchor rod reinforcing bar does not bond with injecting cement paste, when anchor pole is by pulling force, pulling force is directly reached the loaded plate of anchor pole bottom by unbonded reinforcement, apply compressive stress by loaded plate to injecting cement paste, make injecting cement paste and surrounding Rock And Soil produce shearing resistance bond stress, provide bearing capacity needed for anchor pole with this.Because injecting cement paste when pressure type anchor rod works is pressured state, not easy to crack, and anchoring section injecting cement paste increases the limit bond stress between anchoring section and surrounding soil by compression swelling, its supporting capacity and deformability specific thrust type anchor pole make moderate progress, and have an enormous advantage compared to tension type anchor pole tool.But pressure type anchor rod injecting cement paste bottom easily produces stress and concentrates, the loaded plate of bottom is caused to exceed its ultimate compressive strength and crushed destruction.
A kind of prior art pressure type anchor rod arranges multiple loaded plate at the diverse location of injecting cement paste anchoring section, and adopt the reinforcing bar of some different lengths of soap-free emulsion polymeization total stress dispersion to be delivered on each loaded plate.Although this structure considerably reduces the peak stress of anchoring section, bond stress is distributed on whole anchoring depth more equably.But this pressure type anchor rod is due to its structure and complicated construction technique, so difficulty of construction is comparatively large, cost is higher, and difficult quality guarantee.
Utility model content
The purpose of this utility model is to provide a kind of post jacking pressure type anchor rod for slope reinforcement, to improve the compressive strength of injecting cement paste bottom, strengthens the bond stress of injecting cement paste and surrounding soil, thus improves the anchored force of anchor pole.
A kind of post jacking pressure type anchor rod for slope reinforcement of the utility model, comprise element of construction, injecting cement paste and post jacking body, described element of construction is made up of steel pull bar, iron and steel loaded plate, Grouting Pipe, post jacking pipe: described steel pull bar is fixedly connected with loaded plate installing hole by its lower end connection end; The lower end of Grouting Pipe is uncovered to be fixedly connected with this plate through loaded plate; The hypomere tube wall of described post jacking pipe is provided with mud jacking hole, and lower end is closed, and this post jacking pipe is fixed on the periphery of Grouting Pipe by locating support; This element of construction is placed in side slope bolthole, and conventional concrete mortar is injected by Grouting Pipe and forms injecting cement paste; High molecular polymer composite mortar is by the mud jacking hole of post jacking pipe hypomere tube wall, and press-in is filled, permeated in injecting cement paste periphery and bottom, forms the post jacking body establishing mud jacking hole hypomere tube wall equal length with post jacking pipe.
The length that described post jacking pipe is provided with the hypomere tube wall in mud jacking hole is post jacking length of tube 1/3 ~ 1/2.
Described post jacking pipe is provided with the hypomere tube wall periphery in mud jacking hole, overlaps flexible rubber sleeve.
Described steel pull bar is strip combined reinforced bar or reinforcing bar twisted wire, has threaded sleeve outside its lower end connector.
The advantage of a kind of post jacking pressure type anchor rod of the utility model is: by post jacking body to the infiltration of injecting cement paste bottom and sidewall, splitting filling, densification and consolidation to improve the compressive strength of injecting cement paste bottom; Because post jacking body adopts high strength, high adhesion stress, and the macromolecular material polymer concrete prevented water penetration or mortar, solve injecting cement paste bottom Lack of support problem; Simultaneously due to this kind of macromolecular material polymer concrete or mortar and to shear bond stress between soil layer or rock stratum around larger than common injecting paste material, therefore, the utility model improves the compressive strength of injecting cement paste bottom, strengthen the bond stress of injecting cement paste and surrounding soil, thus improve the anchored force of anchor pole; In addition, in same design bearing capacity condition, under shorten rock-bolt length, reduce construction cost.
Accompanying drawing explanation
Fig. 1 is grouting behind shaft or drift lining pressure type anchor rod structural representation in the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is post jacking pressure type anchor rod post jacking tubular structure schematic diagram.
Detailed description of the invention
A kind of post jacking pressure type anchor rod for slope reinforcement of the utility model, comprise element of construction, injecting cement paste 21 and post jacking body 22, described element of construction, be made up of steel pull bar 1, iron and steel loaded plate 3, Grouting Pipe 5, post jacking pipe 6, described steel pull bar 1 is fixedly connected with loaded plate 3 installing hole by its lower end connection end; The lower end of Grouting Pipe 5 is uncovered to be fixedly connected with this plate through loaded plate 3; The hypomere tube wall of described post jacking pipe 6 is provided with mud jacking hole 7, lower end closed, and this post jacking pipe 6 is fixed on the periphery of Grouting Pipe 5 by locating support 9, forms element of construction; This element of construction is placed in side slope bolthole, conventional concrete mortar is injected by Grouting Pipe 5, form the injecting cement paste 21 with anchor pole equal length; By high molecular polymer composite mortar high pressure press-in post jacking pipe 6, by the mud jacking hole 7 of post jacking pipe 6 hypomere tube wall, press-in is filled, permeate in the periphery of injecting cement paste 21 and bottom, forms the post jacking body 22 establishing mud jacking hole 7 hypomere tube wall equal length with post jacking pipe 6.
The length that described post jacking pipe 6 is provided with the hypomere tube wall in mud jacking hole 7 is post jacking pipe 6 length 1/3 ~ 1/2.
Described post jacking pipe 6 is provided with the hypomere tube wall periphery in mud jacking hole 7, overlaps flexible rubber sleeve 8.
Described steel pull bar 1 is strip combined reinforced bar or reinforcing bar twisted wire, has threaded sleeve 4 outside its lower end threaded connector.
The utility model construction sequence is summarized as follows:
1) pore-forming: according to being set angle with side slope horizon, creep into into bolthole in side slope.
2) lay anchor pole: be placed in boring by follow-up sleeve pipe by the element of construction of above-mentioned pressure-type post jacking anchor pole, and extract by follow-up sleeve pipe.
3) slip casting: start grouting pump, is injected conventional concrete mortar by Grouting Pipe 5, forms the injecting cement paste 21 with anchor rod component equal length.
4) post jacking: after treating first time injecting cement paste initial set, by high molecular polymer composite mortar, through high pressure press-in post jacking pipe 6, by the mud jacking hole 7 of post jacking pipe 6 hypomere tube wall, press-in is filled in around injecting cement paste 21, forms the post jacking body 22 establishing mud jacking hole 7 hypomere tube wall equal length with post jacking pipe 6.
5) stretch-draw, locking: after waiting slurries to reach the length of time, require to carry out stretch-draw, locking according to design or related specifications.
Claims (4)
1. the post jacking pressure type anchor rod for slope reinforcement, comprise element of construction, injecting cement paste and post jacking body, it is characterized in that, described element of construction is made up of steel pull bar, iron and steel loaded plate, Grouting Pipe, post jacking pipe: described steel pull bar is fixedly connected with loaded plate installing hole by its lower end connection end; The lower end of Grouting Pipe is uncovered to be fixedly connected with this plate through loaded plate; The hypomere tube wall of described post jacking pipe is provided with mud jacking hole, and lower end is closed, and this post jacking pipe is fixed on the periphery of Grouting Pipe by locating support; This element of construction is placed in side slope bolthole, and conventional concrete mortar is injected by Grouting Pipe and forms injecting cement paste; High molecular polymer composite mortar is by the mud jacking hole of post jacking pipe hypomere tube wall, and press-in is filled, permeated in injecting cement paste periphery and bottom, forms the post jacking body establishing mud jacking hole hypomere tube wall equal length with post jacking pipe.
2. a kind of post jacking pressure type anchor rod for slope reinforcement according to claim 1, is characterized in that, the length that post jacking pipe is provided with the hypomere tube wall in mud jacking hole is post jacking length of tube 1/3 ~ 1/2.
3. a kind of post jacking pressure type anchor rod for slope reinforcement according to claim 1, is characterized in that, post jacking pipe is provided with the hypomere tube wall periphery in mud jacking hole, overlaps flexible rubber sleeve.
4. a kind of post jacking pressure type anchor rod for slope reinforcement according to claim 1, is characterized in that, steel pull bar is strip combined reinforced bar or reinforcing bar twisted wire, has threaded sleeve outside its lower end connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667315.1U CN204982878U (en) | 2015-08-28 | 2015-08-28 | A back mud jacking pressure type stock for slope reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667315.1U CN204982878U (en) | 2015-08-28 | 2015-08-28 | A back mud jacking pressure type stock for slope reinforcement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204982878U true CN204982878U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520667315.1U Active CN204982878U (en) | 2015-08-28 | 2015-08-28 | A back mud jacking pressure type stock for slope reinforcement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204982878U (en) |
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2015
- 2015-08-28 CN CN201520667315.1U patent/CN204982878U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |