CN205314100U - Autonomic pressure boost anchor rope - Google Patents
Autonomic pressure boost anchor rope Download PDFInfo
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- CN205314100U CN205314100U CN201521107505.4U CN201521107505U CN205314100U CN 205314100 U CN205314100 U CN 205314100U CN 201521107505 U CN201521107505 U CN 201521107505U CN 205314100 U CN205314100 U CN 205314100U
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- anchor cable
- bands
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- supercharging
- anchor
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Abstract
The utility model relates to an autonomic pressure boost anchor rope, including anchor section and free section, a plurality of bandss freely stretch out and draw back at free section in anchor section and country rock anchor, and the bands is fixed in the drill way through the ground tackle, slip casting pipe with bands parallel arrangement, bands and slip casting guan jun pass a plurality of spacing cards in the anchor section be equipped with the gasbag between ground tackle and the drill way. The utility model discloses an installing spacing card, having solved this type of engineering anchor duan yupo body and slided prestressing force and lost efficacy, perhaps prestressing force does not reach design value etc. And results in strutting the problem that the system unstability was destroyed among the anchor rope tensioning process, through have a perfect understanding the PE pipe who lays cause gauze parcel whole body plum blossom mold patching hole in the middle part of the anchor rope, realized that sloping internal hydrostatic pressing is to moving the water pressure conversion, can realize the intellectuality of anchor rope prestressing force developments through installation gasbag between the ground tackle and the slope body and apply that impact load and the in the twinkling of an eye destruction of earthquake load to supporting construction have also been alleviated to the gasbag simultaneously.
Description
Technical field
This utility model relates to a kind of side slope protection and hinders autonomous supercharging dynamic drainage anchor cable and construction method thereof with multistage increasing, particularly relate to a kind of applicable strong-weathered rock matter or a kind of autonomous supercharging anchor cable of soil property high gradient slope, area marine stratum Extra-Deep Foundation Pit, belong to engineering support field.
Background technology
Prestressed anchor reinforcement technology is confirmed by many engineering practices as the reinforcement measure of a kind of bearing capacity being effectively improved Rock And Soil and stability. Prestress anchorage cable is because playing the self-supporting potentiality of ground fully, regulate and improve self-strength and the self-stable ability of ground, alleviate the deadweight of supporting construction, save engineering material, and can guarantee that the safety and stablization of construction, there is significant economic and social profit, be widely used in Geotechnical Engineering. It is no matter for strengthening the dynamics to development of the West Regions in recent years, or alleviates urban traffic pressure and the city underground built just like a raging fire, as many Underground Transportation Engineering will in the face of slope retaining problem; But prestress anchorage cable coordinates concrete frame beam, steel I-beam etc. to become the common technology means reinforcing such engineering.
Western China is many mountainous terrain, builds high-speed railway, highway it is frequently necessary to high gradient slope along the line is reinforced; China coast city underground and building of skyscraper it is frequently necessary to excavate the foundation ditch as deep as tens of meters simultaneously; face going along with sb. to guard him of hole wall equally; when facing this severely-weathered or soil property high gradient slope, area marine stratum Deep Foundation Pit Supporting Engineering; original anchor cable is less with injecting cement paste frictional force or construction disturbance often faces anchoring section cable body and injecting cement paste sliding causes prestressed failure; or prestressing force does not reach the situations such as design load in anchorage cable stretching process so that engineering safety cannot be effectively guaranteed.
At present, traditional anchor cable has the disadvantages that
1, disposable prestressed stretch-draw can only be realized, when prestressing force does not reach the situation of design load, or when running into loss of prestress, it is impossible to carry out two times tensioning to supplement Shi Hanzhang;
2, cannot accomplishing effectively to dredge for the hydrostatic in reinforcing country rock body, in reinforcing body, hydrostatic pressure is gradually increased the unstable failure causing country rock body;
3, the frictional force between injecting cement paste and anchor cable is limited, becomes the restrictive factor of anchorage cable anchoring power, thus causing that the anchor force of anchor cable does not reach design load.
Utility model content
The purpose of this utility model is a kind of a kind of autonomous supercharging anchor cable suitable in strong-weathered rock matter or soil property high gradient slope, area marine stratum Extra-Deep Foundation Pit of design, this anchor cable has the function of autonomous supercharging, solve such engineering anchoring section cable body and reinforcing body sliding prestressed failure, or in anchorage cable stretching process, prestressing force does not reach the problem that design load etc. causes support system unstable failure.
For achieving the above object, the design adopts following scheme: a kind of autonomous supercharging anchor cable, and including anchoring section and free segment, some bands, in anchoring section and country rock anchoring, freely stretch at free segment, and bands is fixed on aperture by ground tackle; Grouting Pipe and described bands are arranged in parallel, and described bands and Grouting Pipe all at the anchoring section some limiting cards of traverse, are provided with air bag between described ground tackle and aperture.
Anchor cable is provided with air bag between drilling orifice and ground tackle, by airbag aeration, airbag inflation can realize the autonomous supercharging of prestressd anchor cable at any time.
Described air bag is provided with the charging connector inflated, and is provided with the hole in order to anchor cable traverse at center, and described air bag reaches design pressure and demarcates; It is provided with geotextiles between described air bag and described drilling orifice.
It is separated by between limiting card described in adjacent two setting spacing; The periphery of described limiting card is provided with the some barbs outside country rock.
By laying barb on the limiting card of anchoring section, it is achieved the multistage of anchor cable increases resistance function, adds the frictional force between bands and injecting cement paste, overcome and utilize merely injecting cement paste to reinforce the drawback of country rock with anchor cable friction.
Described anchor cable also includes the drain pipe laid along described anchor cable length direction, and the hole wall of described drain pipe is provided with some inlet openings, and described limiting card is provided with the hole in order to described drain pipe traverse.
Described inlet opening is quincuncial arrangement along the whole body of described drain pipe; The whole body parcel of described drain pipe is in order to prevent described injecting cement paste from blocking the permeability flexible material of described inlet opening.
Drain pipe is set inside anchor cable, it is possible to is drawn along drain pipe by the hydrostatic in Rock And Soil, even if the mounted angle of cable body is obliquely, is the elevation angle, also can realize the discharge of water under high pressure to reinforcing body inner accumulated, reach the effect of dynamic drainage pressure release.
Described anchor cable also includes the exhaustor laid along described anchor cable length direction, and described exhaustor is equal with the length of described anchor cable.
Lay exhaustor, it is simple to gas purging in slip casting hole when, in order to avoid gas cannot be got rid of during because of slip casting, cause slip casting leakiness.
Described limiting card is provided with in order to respectively for the fixing hole of each described bands, described Grouting Pipe, described drain pipe and described exhaustor traverse.
Each described bands is fixed in described fixing hole by fixture through described limiting card; The cross sectional shape of described fixture is annular, and the periphery of described fixture is stuck in described fixing hole, and described bands is clamped by inner circumferential.
Described fixture includes the some wedge shape sections of jurisdiction radially spliced, and described wedge shape section of jurisdiction is provided with groove, and described groove is cased with the rubber ring in order to fixing some wedge shape sections of jurisdiction.
The multistage construction method increasing the autonomous supercharging dynamic drainage anchor cable of resistance, comprises the following steps:
Step 1: assembled anchor cable, assembled some bands and limiting card, fixing Grouting Pipe, exhaustor and drain pipe;
Step 2: assembled good described anchor cable is placed in anchor cable hole, carries out first slip casting;
Step 3: when injecting cement paste intensity first in hole reaches the first setting value, carry out secondary grouting;
Step 4: when injecting cement paste reaches the second setting value, installs air bag, ground tackle and anchor cable fixture at drilling orifice successively;
Step 5: pressurizeed to airbag aeration by charging connector, to anchor cable Shi Hanzhang until design load.
The beneficial effects of the utility model are:
1) by installing limiting card, overcome and utilize merely injecting cement paste to reinforce the drawback of slope body with anchor cable hole wall friction, solve such engineering anchoring section and slope body sliding prestressed failure, or in anchorage cable stretching process, prestressing force does not reach the problem that design load etc. causes support system unstable failure;
2) by being wrapped up the polyethylene tube of whole body blossom type perforations adding laying through in the middle part of anchor cable one by gauze, it is achieved that in the body of slope, hydrostatic presses to the conversion of dynamic hydraulic pressure;
3) can realizing prestressd anchor cable dynamic and intelligentization by installation air bag between ground tackle and slope body to apply, air bag also alleviates impact load and the earthquake load flash disruption to supporting construction simultaneously.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram-1 of this utility model device embodiment one;
Fig. 2 is the limiting clamp structure schematic diagram-2 of this utility model device embodiment one;
Fig. 3 is the fixture detail drawing of the corresponding diagram 2 of this utility model device;
Fig. 4 is the drain pipe schematic diagram of the corresponding diagram 1 of this utility model device;
Fig. 5 is the air bag schematic diagram of the corresponding diagram 1 of this utility model device.
Wherein, 1-barb, 2-bands, 3-Grouting Pipe, 4-exhaustor, 5-drain pipe, 6-limiting card, 7-connects axle, 8-osculum, 9-air bag, 10-charging connector, 11-geotextiles, 12-rubber ring, 13-wedge shape section of jurisdiction, 14-ground tackle, 15-fixture.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in detail.
This utility model device mainly includes barb 1, bands 2, Grouting Pipe 3, exhaustor 4, drain pipe 5, limiting card 6, connects axle 7, osculum 8, air bag 9, charging connector 10, geotextiles 11, rubber ring 12, wedge shape section of jurisdiction 13, ground tackle 14, fixture 15; Wherein said bands 2, Grouting Pipe 3, exhaustor 4, drain pipe 5 both pass through the fixing hole of limiting card 6, and wherein often bundle bands is fixed on limiting card 6 by fixture 15; 4 barbs 1 are uniformly fixed on limiting card 6 by connecting axle 7 hoop, and barb 1 can rotate within the specific limits; Geotextiles 10 is laid, in order to avoid air bag 9 is destroyed by rubble etc. between slope body and air bag 9.
Anchor cable is divided into free segment and anchoring section; Limiting card 6 hoop is evenly arranged four barbs 1, and barb 1 is connected with limiting card 6 by connecting axle 7, can rotate within the specific limits; Barb is wedge shape barb, and its root designs for inclined plane, by connecting the pitch angle control of the axle 7 spacing with limiting card and barb root inclined plane, it is achieved barb freely opens within the scope of 0o-30o. In the borehole, barb can produce friction with borehole wall to anchor cable, and then makes barb keep the state opened when injecting cement paste consolidates.
Free segment bands outsourcing corrugated tube, the extension to realize free end bands 2 completes prestressed applying; A through Grouting Pipe 3 in the middle part of anchor cable, an exhaustor 4 and a drain pipe 5, the drain pipe whole body is drilled with quincunx osculum 8, and pipe whole body crocus cloth wraps up, in case slurry blocking osculum 8; One autonomous pressurised airbag 9 is installed between anchor cable and ground tackle 14, by air bag 9 pressurization can dynamic realtime anchor cable is carried out prestressed applying and supplement, prevent reinforcing body surface irregularity or sharp rubble etc. from air bag causing breakage, between air bag and broken body, lay flexible material geotextiles 11.
Level increases the autonomous supercharging dynamic drainage New Anchor Cable of resistance and installation method thereof, in conjunction with accompanying drawing, its operational approach is expanded on further:
1 determines free section of anchor cable and anchoring depth, on-site consolidation bands 2 and limiting card 6 fixing Grouting Pipe 3, exhaustor 4 and drain pipe 5 according to design; High tenacity polyethylene cloth parcel can be used in anchor cable termination, conveniently puts into anchor cable hole;
2) in conjunction with side slope field working conditions or excavation of foundation pit order, assembled good anchor cable is put into the anchor cable hole constructed in advance, carries out first low-pressure grouting (pressure 0.3～0.5MPa);
3), when slurry intensity reaches 70% in hole, secondary high-pressure slip-casting (pressure 1.5～2MPa) is carried out;
4) when in hole, slurry intensity reaches 100%, slope surface lays one layer of geotextiles 10, then installs air bag 9 successively, and ground tackle 14, anchor cable fixture, four sphenoid sections of jurisdiction that fixture is fixed by rubber ring form. Its stream line fixture is identical with the structure of fixture 15;
5) according to designing requirement, the airbag aeration classification pressurization being complete pressure calibration is given by charging connector 10, to anchor cable Shi Hanzhang until design load.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model. The multiple amendment of embodiment be will be apparent from for those skilled in the art, generic principles defined herein can when without departing from spirit or scope of the present utility model, realize in other embodiments, the part not being described in detail, for prior art, do not repeat at this. Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and feature.
Claims (9)
1. an autonomous supercharging anchor cable, including anchoring section and free segment, some bands, in anchoring section and country rock anchoring, freely stretch at free segment, and bands is fixed on aperture by ground tackle; It is characterized in that: Grouting Pipe and described bands are arranged in parallel, described bands and Grouting Pipe all at the anchoring section some limiting cards of traverse, are provided with air bag between described ground tackle and aperture.
2. the autonomous supercharging anchor cable of one according to claim 1, it is characterised in that: described air bag is provided with the charging connector inflated, and is provided with the hole in order to anchor cable traverse at center, and described air bag reaches design pressure and demarcates; It is provided with geotextiles between described air bag and described drilling orifice.
3. the autonomous supercharging anchor cable of one according to claim 1, it is characterised in that: setting spacing of being separated by between limiting card described in adjacent two; The periphery of described limiting card is provided with the some barbs outside country rock.
4. the autonomous supercharging anchor cable of one according to claim 1, it is characterized in that: described anchor cable also includes the drain pipe laid along described anchor cable length direction, the hole wall of described drain pipe is provided with some inlet openings, and described limiting card is provided with the hole in order to described drain pipe traverse.
5. the autonomous supercharging anchor cable of one according to claim 4, it is characterised in that: described inlet opening is quincuncial arrangement along the whole body of described drain pipe; The whole body parcel of described drain pipe is in order to prevent described injecting cement paste from blocking the permeability flexible material of described inlet opening.
6. the autonomous supercharging anchor cable of one according to claim 1, it is characterised in that: described anchor cable also includes the exhaustor laid along described anchor cable length direction, and described exhaustor is equal with the length of described anchor cable.
7. according to the arbitrary described a kind of autonomous supercharging anchor cable of claim 1-6, it is characterised in that: described limiting card is provided with in order to respectively for the fixing hole of each line member traverse.
8. the autonomous supercharging anchor cable of one according to claim 7, it is characterised in that: each described bands is fixed in described fixing hole by fixture through described limiting card; The cross sectional shape of described fixture is annular, and the periphery of described fixture is stuck in described fixing hole, and described bands is clamped by inner circumferential.
9. the autonomous supercharging anchor cable of one according to claim 8, it is characterised in that: described fixture includes the some wedge shape sections of jurisdiction radially spliced, and described wedge shape section of jurisdiction is provided with groove, and described groove is cased with the rubber ring in order to fixing some wedge shape sections of jurisdiction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107505.4U CN205314100U (en) | 2015-12-25 | 2015-12-25 | Autonomic pressure boost anchor rope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107505.4U CN205314100U (en) | 2015-12-25 | 2015-12-25 | Autonomic pressure boost anchor rope |
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| CN205314100U true CN205314100U (en) | 2016-06-15 |
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| CN201521107505.4U Active CN205314100U (en) | 2015-12-25 | 2015-12-25 | Autonomic pressure boost anchor rope |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442597A (en) * | 2015-12-25 | 2016-03-30 | 中铁十四局集团第二工程有限公司 | Self-supercharging anchor cable and construction method thereof |
| CN114753305A (en) * | 2022-04-02 | 2022-07-15 | 三峡大学 | Automatic slope loading reinforcing device and reinforcing method along with water level change |
-
2015
- 2015-12-25 CN CN201521107505.4U patent/CN205314100U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442597A (en) * | 2015-12-25 | 2016-03-30 | 中铁十四局集团第二工程有限公司 | Self-supercharging anchor cable and construction method thereof |
| CN114753305A (en) * | 2022-04-02 | 2022-07-15 | 三峡大学 | Automatic slope loading reinforcing device and reinforcing method along with water level change |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |