CN203270566U - Expansive soil anchor cable grout-stopping plug and anchor cable structure with same - Google Patents
Expansive soil anchor cable grout-stopping plug and anchor cable structure with same Download PDFInfo
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- CN203270566U CN203270566U CN 201320267965 CN201320267965U CN203270566U CN 203270566 U CN203270566 U CN 203270566U CN 201320267965 CN201320267965 CN 201320267965 CN 201320267965 U CN201320267965 U CN 201320267965U CN 203270566 U CN203270566 U CN 203270566U
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- expansive soil
- grouting
- anchor cable
- grout
- anchor
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Abstract
Disclosed are an expansive soil anchor cable grout-stopping plug and an anchor cable structure with the expansive soil anchor cable grout-stopping plug. The expansive soil anchor cable grout-stopping plug comprises a centering support, steel stranded wires, a high-pressure grouting pipe and expansive soil. The expansive soil is wounded among all the steel stranded wires after being packaged with flexible materials, the high-pressure grouting pipe penetrates through the expansive soil, and the centering support is arranged at the two ends of an expansive soil anchor cable grout-stopping plug body. During grouting or even high-pressure grouting, the expansive soil anchor cable grout-stopping plug enables the free section of an anchor rod to be separated from the anchoring section of the anchor rod completely, therefore, on one hand, grout leakage and grout returning can be avoided during grouting, and on the other hand, a grout body can be well dispersed and tightly compressed under the action of grouting pressure. The expansive soil anchor cable grout-stopping plug is simple in structure, and materials used are relatively rich in south-west regions of China and are low in cost.
Description
Technical field
The utility model relates to the Construction Technology such as bridge field, especially relates to a kind of expansive soil anchor rope grouting-stop plug and uses its anchor cable structure.
Background technology
At present, the kind of anchor rope grouting-stop plug is more, comprises cock body and two metal location-plates and expanded rubber body composition etc. of certain flexible cone shape.But above-mentioned two kinds of rockbolt packers are placed near the aperture more, construct more difficultly if be applied to have the anchor pole of longer free segment, and application is limited.Therefore, for the anchor pole that has longer free segment in base pit engineering, slope protection works, it is very urgent inventing a kind of novel stop grouting plug that is used for the anchorage cable anchoring section.
The utility model content
The purpose of this utility model is to design a kind of expansive soil anchor rope grouting-stop plug, addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of expansive soil anchor rope grouting-stop plug, comprise medium-height trestle, steel strand, high-pressure slip-casting pipe and expansive soil, described expansive soil is wrapped between each described steel strand after packing through flexible material, described high-pressure slip-casting pipe passes described expansive soil, the described two ends that medium-height trestle are arranged on described expansive soil anchor rope grouting-stop plug.
Described steel strand comprise symmetrically arranged four in twos, become each other 90 ° of angles, four center and described center superpositions to medium-height trestle that described steel strand surround.
Described flexible material comprises geotextiles and nonwoven, staggered being wrapped between each described steel strand after described expansive soil is packed through described flexible material.
Described expansive soil anchor rope grouting-stop plug comprises expansive soil anchor rope grouting-stop plug and the common expansive soil anchor rope grouting-stop plug that is applied to soft clay area, and the former length is 75cm-100cm, and latter's length is 30cm-50cm.
A kind of anchor cable structure of using described expansive soil anchor rope grouting-stop plug comprises anchor hole, anchorage cable anchoring section and free section of anchor cable, and the initiating terminal of described expansive soil anchor rope grouting-stop plug is arranged on the boundary of described anchorage cable anchoring section and described free section of anchor cable.
A kind of job practices of described anchor cable structure comprises that step is as follows:
The first step with the expansive soil oven dry, is then pulverized it;
Second step, the sieve through different size carries out the grain composition statistics respectively, then mixes according to certain volume ratio, in its flexible material bag of making of packing into, then is processed to form described expansive soil anchor rope grouting-stop plug;
The 3rd step, described expansive soil anchor rope grouting-stop plug and anchor cable are assembled, rigging position is that the initiating terminal of described expansive soil anchor rope grouting-stop plug will be positioned at anchorage cable anchoring section and free segment boundary, forms the anchor cable structure of the described expansive soil anchor rope grouting-stop plug of described application;
The 4th step determined anchor hole at the construction field (site), after treating that described anchor hole pore-forming is complete, the anchor cable that is banded with described expansive soil anchor rope grouting-stop plug was put into described anchor hole, carried out once grouting;
In the 5th step, after described expansive soil expansion is stable, carry out even three sub-high pressure slip castings of secondary.
In the first step, utilize baking oven that expansive soil is dried, then utilize roller or roller that it is pulverized;
In second step, the sieve of described different size comprises the sieve of 0.5mm, 1.0mm, 2.0mm and 5.0mm; Described flexible material bag comprises geotechnological cloth bag or non-woven bag;
In the 5th step, after 3-4 hour, treat that described expansive soil expands stable, carry out secondary high-pressure slip-casting; By that analogy, carry out for the third time described high-pressure slip-casting even more frequently.
Described certain volume ratio refers to that (0.5mm: 1.0mm: 2.0mm: the ratio of the volume of the total amount that different-grain diameter particle 5.0mm) is shared is ((1-3): (1-3): (5-10): (25-50)).
In the 5th step, in ultra-soft soil, after the high-pressure slip-casting time interval after reaching for the second time was adjusted to 8-10 hour.
The weak soil of the so-called soft clay area of the utility model comprises: silt soil, mucky soil, cumulosol and bury.
The so-called ultra-soft soil of the utility model refers to the more general larger weak soil of weak soil liquid limit, and this soil is present in the barged-in fill that forms in the reclaiming land around sea process more.
The utility model is so-called to be mixed according to certain volume ratio, refer to expansion force and expansion rate in order to reach designing requirement, generally, common volume ratio is that (0.5mm: 1.0mm: 2.0mm: the ratio of the volume of the total amount that different-grain diameter particle 5.0mm) is shared is ((1-3): (1-3): (5-10): (25-50)); The ratio of the volume of the total amount that above-mentioned different-grain diameter particle is shared, this is owing to being prone to larger space between not larger particle, by being equipped with the soil particle than small particle diameter, can fill the space well, thus the structural integrity of assurance expansive soil stop grouting plug.
The beneficial effects of the utility model can be summarized as follows:
1, even the utility model is when carrying out the slip casting high-pressure slip-casting, free segment and the anchoring section that can thoroughly separate anchor pole, spillage occurs in the time of on the one hand can preventing slip casting, return slurry, on the other hand, can so that slurry under the grouting pressure effect, can be spread well and densification, this uses the new structure simple structure, and material therefor is abundanter at In Southwest China, and cheap.
2, can not well free section and anchoring section be separated in order to overcome existing stop grouting plug, and the grouting quality, bearing capacity and the saving cement material that guarantee anchor rod anchored section, the stop grouting plug that the utility model provides can distinguish free segment and the anchoring section of anchor pole well, improve the anchoring section bearing capacity, and construction is the aspect relatively, and application is wider.
3, the utility model has overcome the deficiency of existing stop grouting plug, utilize the special soils expansive soil of higher expansion rate as the raw material of stop grouting plug, utilize the essential structure of steel strand anchor rod, utilize a kind of special nonwoven to pack expansive soil, it is packaged into a special shape, then with its " winding " between each steel strand, this spatial relationship will be conducive to the performance of expansive soil expansion characteristics on the one hand, can guarantee on the other hand that stop grouting plug is unlikely to come off in the high-pressure slip-casting process to leak.Because the expansion rate of expansive soil is very high, can produce larger expansion force after meeting water or cement paste, this expansion force and hole wall be closely effect mutually, thereby has guaranteed density and the stability of stop grouting plug.Especially when the design bearing capacity of anchor pole is larger, require just highly for the grouting quality of anchoring section injecting cement paste, it is very large that required grouting pressure becomes, the requirement that the diameter that at this moment the expansive soil stop grouting plug can be by changing self and length satisfy high-pressure slip-casting.
Description of drawings
Fig. 1 is the schematic diagram of structure of the utility model expansive soil anchor rope grouting-stop plug.
Fig. 2 is the grouting action principle figure of the utility model expansive soil anchor rope grouting-stop plug.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
A kind of expansive soil anchor rope grouting-stop plug as depicted in figs. 1 and 2, comprise medium-height trestle 1, steel strand 2, high-pressure slip-casting pipe 3 and expansive soil (comprising the dry ground 4 of initial bubble soil and the described expansive soil 5 after expansion shown in Fig. 1), described expansive soil is wrapped between each described steel strand 2 after packing through flexible material, described high-pressure slip-casting pipe 3 passes described expansive soil, the described two ends that medium-height trestle 1 are arranged on described expansive soil anchor rope grouting-stop plug.
In a preferred embodiment, described steel strand 2 comprise symmetrically arranged four in twos, become each other 90 ° of angles, four center and described center superpositions to medium-height trestle 1 that described steel strand 2 surround.Described flexible material comprises geotextiles and nonwoven, staggered being wrapped between each described steel strand 2 after described expansive soil is packed through described flexible material.Described expansive soil anchor rope grouting-stop plug comprises expansive soil anchor rope grouting-stop plug and the common expansive soil anchor rope grouting-stop plug that is applied to soft clay area, and the former length is 75cm-100cm, and latter's length is 30cm-50cm.
A kind of anchor cable structure of using described expansive soil anchor rope grouting-stop plug comprises anchor hole, anchorage cable anchoring section and free section of anchor cable, and the initiating terminal of described expansive soil anchor rope grouting-stop plug is arranged on the boundary of described anchorage cable anchoring section and described free section of anchor cable.
A kind of job practices of described anchor cable structure comprises that step is as follows:
The first step with the expansive soil oven dry, is then pulverized it;
Second step, the sieve through different size carries out the grain composition statistics respectively, then mixes according to certain volume ratio, in its flexible material bag of making of packing into, then is processed to form described expansive soil anchor rope grouting-stop plug;
The 3rd step, described expansive soil anchor rope grouting-stop plug and anchor cable are assembled, rigging position is that the initiating terminal of described expansive soil anchor rope grouting-stop plug will be positioned at anchorage cable anchoring section and free segment boundary, forms the anchor cable structure of the described expansive soil anchor rope grouting-stop plug of described application;
The 4th step determined anchor hole at the construction field (site), after treating that described anchor hole pore-forming is complete, the anchor cable that is banded with described expansive soil anchor rope grouting-stop plug was put into described anchor hole, carried out once grouting;
In the 5th step, after described expansive soil expansion is stable, carry out even three sub-high pressure slip castings of secondary.
In a preferred embodiment,
In the first step, utilize baking oven that expansive soil is dried, then utilize roller or roller that it is pulverized;
In second step, the sieve of described different size comprises the sieve of 0.5mm, 1.0mm, 2.0mm and 5.0mm; Described flexible material bag comprises geotechnological cloth bag or non-woven bag; Described certain volume ratio refers to that (0.5mm: 1.0mm: 2.0mm: the ratio of the volume of the total amount that different-grain diameter particle 5.0mm) is shared is ((1-3): (1-3): (5-10): (25-50));
In the 5th step, after 3-4 hour, treat that described expansive soil expands stable, carry out secondary high-pressure slip-casting; By that analogy, carry out for the third time described high-pressure slip-casting even more frequently; In the 5th step, in ultra-soft soil, after the high-pressure slip-casting time interval after reaching for the second time was adjusted to 8-10 hour.
the utility model action principle and work progress comprise: (1) action principle: utilize to have the expansive soil of stronger expansion characteristics as raw material, wrap in raw-material periphery one deck geotextiles or nonwoven, after this expansive soil anchor rope grouting-stop plug water-swellable, stronger axial force occurs in meeting and hole wall, make contacting of expansive soil anchor rope grouting-stop plug and hole wall tightr, like this under the effect of axial grouting pressure, larger movement can not occur, stability can guarantee, sealing also can be guaranteed, slurry just can not flow out from the aperture by the expansive soil anchor rope grouting-stop plug like this, promoted grouting pressure, guaranteed the grouting quality of anchor cable.(2) work progress: the expansive soil anchor rope grouting-stop plug " winding " that processes is assemblied between anchorage cable anchoring section and free segment, then should descend together to carry out slip casting in hand-hole by compound grouting anchor cable, carried out again high-pressure slip-casting after (ultra-soft soil) in individual hour until 3-4 hour (soil nature is better) or 8-10, can effectively avoid in the high-pressure slip-casting process aperture to return slurry/spillage, improve grouting quality and the diffusion radius of anchorage cable anchoring section, improved the bearing capacity of anchorage cable anchoring section, can reach under construction quality requirement and requirement for bearing capacity on the one hand, can save the grouting cement consumption of free section of anchor cable, can shorten the construction period of engineering on the other hand.
Formation distributes and engineering and geological feature of soils: in 17 meters scopes of anchorage cable design length, pass altogether 1.5 meters thick plain fills, 2 meters thick miscellaneous fills, 3 meters thick silty claies, 2.5 meters thick buries, 5 meters thick silts, 6 meters thick flour sands, 4 meters thick silty claies, then below be clay.
Project profile: in this foundation pit supporting project project, adopt the supporting scheme of single pile soldier pile+prestress anchorage cable, totally 17 meters of the design lengths of anchor cable, wherein freedom length is 7 meters.
the detailed process of carrying out the construction of expansive soil anchor rope grouting-stop plug according to above-mentioned geological condition and engine request is as follows: at first utilize baking oven that expansive soil is dried, then utilize roller or roller that it is pulverized, then pass through respectively 0.5mm, 1mm, 2.0mm and the sieve of 5.0mm carries out the grain composition statistics, then according to certain volume ratio, in its geotextiles (or nonwoven) bag of making of packing into, then carry out processing again, form the engineering expansive soil anchor rope grouting-stop plug shown in accompanying drawing 2, then according to the structure of anchor cable, according to structure shown in Figure 1, itself and anchor cable are assembled, rigging position is that the initiating terminal of expansive soil anchor rope grouting-stop plug will be positioned at anchorage cable anchoring section and free segment boundary, after treating that the anchor hole pore-forming is complete, the anchor cable that is banded with the expansive soil anchor rope grouting-stop plug is put into anchor hole, carry out once grouting, after 3-4 hour, after expansive soil expands and stablizes, carry out even three sub-high pressure slip castings of secondary, under the high-pressure slip-casting pressure-acting up to 3.0MPa, the expansive soil anchor rope grouting-stop plug can prevent that the aperture from not returning slurry/spillage.After using above-mentioned utility model expansive soil anchor rope grouting-stop plug, can effectively avoid in the high-pressure slip-casting process aperture to return slurry/spillage, improve grouting quality and the diffusion radius of anchorage cable anchoring section, improved the bearing capacity of anchorage cable anchoring section, can reach under construction quality requirement and requirement for bearing capacity on the one hand, the grouting cement consumption of free section of anchor cable can be saved, the construction period of engineering can be shortened on the other hand.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. expansive soil anchor rope grouting-stop plug, it is characterized in that, comprise medium-height trestle, steel strand, high-pressure slip-casting pipe and expansive soil, described expansive soil is wrapped between each described steel strand after packing through flexible material, described high-pressure slip-casting pipe passes described expansive soil, the described two ends that medium-height trestle are arranged on described expansive soil anchor rope grouting-stop plug.
2. expansive soil anchor rope grouting-stop plug according to claim 1, is characterized in that, described steel strand comprise symmetrically arranged four in twos, become each other 90 ° of angles, four center and described center superpositions to medium-height trestle that described steel strand surround.
3. expansive soil anchor rope grouting-stop plug according to claim 1, is characterized in that, described flexible material comprises geotextiles and nonwoven, staggered being wrapped between each described steel strand after described expansive soil is packed through described flexible material.
4. an anchor cable structure of using described expansive soil anchor rope grouting-stop plug, is characterized in that, comprise anchor hole, anchorage cable anchoring section and free section of anchor cable, the initiating terminal of described expansive soil anchor rope grouting-stop plug is arranged on the boundary of described anchorage cable anchoring section and described free section of anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320267965 CN203270566U (en) | 2013-05-16 | 2013-05-16 | Expansive soil anchor cable grout-stopping plug and anchor cable structure with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320267965 CN203270566U (en) | 2013-05-16 | 2013-05-16 | Expansive soil anchor cable grout-stopping plug and anchor cable structure with same |
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| CN203270566U true CN203270566U (en) | 2013-11-06 |
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| CN 201320267965 Expired - Fee Related CN203270566U (en) | 2013-05-16 | 2013-05-16 | Expansive soil anchor cable grout-stopping plug and anchor cable structure with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164874A (en) * | 2013-05-16 | 2014-11-26 | 建研地基云南有限公司 | Expansive soil anchor rope stop-grouting plug, and anchor rope structure using same and construction method thereof |
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2013
- 2013-05-16 CN CN 201320267965 patent/CN203270566U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164874A (en) * | 2013-05-16 | 2014-11-26 | 建研地基云南有限公司 | Expansive soil anchor rope stop-grouting plug, and anchor rope structure using same and construction method thereof |
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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: 20131106 Termination date: 20180516 |