CN110453695A - A kind of prestressed anchor Cable Structure and prestress anchorage cable once grouting construction method - Google Patents
A kind of prestressed anchor Cable Structure and prestress anchorage cable once grouting construction method Download PDFInfo
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- CN110453695A CN110453695A CN201910748791.9A CN201910748791A CN110453695A CN 110453695 A CN110453695 A CN 110453695A CN 201910748791 A CN201910748791 A CN 201910748791A CN 110453695 A CN110453695 A CN 110453695A
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- anchor cable
- pipe
- strand wires
- steel strand
- grouting pipe
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 161
- 239000010959 steel Substances 0.000 claims abstract description 161
- 238000007569 slipcasting Methods 0.000 claims abstract description 59
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 238000004873 anchoring Methods 0.000 claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 230000009469 supplementation Effects 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000004804 winding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- -1 that is Substances 0.000 description 2
- 244000062793 Sorghum vulgare Species 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention provides a kind of prestressed anchor Cable Structure and prestress anchorage cable once grouting construction methods.The structure includes: the anchor cable hole being arranged in soil layer；Wherein, anchor cable hole be internally provided with anchor cable and with the spaced Grouting Pipe of anchor cable, also, the tail portion of anchor cable is stretched out from anchor cable hole；Anchor cable is the harness of more steel strand wires composition；It is provided with multiple intervals and steel pipe arranged side by side in the section of anchoring section, is coaxially disposed between each steel pipe, and, each steel strand wires are arranged along the outer wall of steel pipe, so as to be isolated between each steel strand wires, and, the periphery of steel strand wires is provided with the first dead ring, steel strand wires to be fastened on steel pipe；Independent bunchy and periphery pass through the second dead ring and fasten between each steel strand wires between any two steel pipe.Exist independently of each other between Grouting Pipe of the present invention and anchor cable, be embedded in slurries convenient for anchor cable when subsequent slip casting, avoiding the problem that the damage of Grouting Pipe and Grouting Pipe are embedded in slurries causes slurries contraction to cause to require supplementation with slip casting.
Description
Technical field
The present invention relates to technical field of civil, in particular to a kind of prestressed anchor Cable Structure and prestressed anchor
Rope once grouting construction method.
Background technique
High slope in the location of general complex geologic conditions applies the mode of " prestress anchorage cable+lattice fine strain of millet " to be propped up more
Shield, to ensure roadbed stability of high slope.Prestress anchorage cable needs to carry out slip casting by pre-buried Grouting Pipe after mounting, and slip casting is adopted
With cement mortar, determine that coordination in works, practical grouting amount are generally greater than theoretical grouting amount after being tested than choosing, or with anchor
Tool gas vent is no longer vented and aperture slurries overflow the standard that underflow terminates as slip casting, as generated after primary note is discontented or slip casting
Sedimentation, will supplement slip casting, until filling.
Existing grouting device generally carries out slip casting using the pipeline of pre-buried PPR, and simple structure, leakproofness is poor, when use
It easily breaks down, slurries are pumped into Grouting Pipe by when slip casting by grouting pump, by the pressure of tube bottom by slurries top to aperture, are infused
Slurry is completed.Slip casting process is long, grouting quality is affected by Grouting Pipe, causes cement slurry to shrink, therefore is generally embedded with secondary injection
Slurry pipe, carries out after-teeming slurry, causes construction to be difficult to it is anticipated that constructing, extends the duration, increases project cost.
Summary of the invention
In consideration of it, the invention proposes a kind of prestressed anchor Cable Structure and prestress anchorage cable once grouting construction method, purport
Solving the problems, such as that it is long in time limit at high cost that existing grouting device needs multiple slip casting to cause.
On the one hand, the invention proposes a kind of prestressed anchor Cable Structure, which includes: the anchor cable hole being arranged in soil layer；
Wherein, the anchor cable hole be internally provided with anchor cable and with the spaced Grouting Pipe of the anchor cable, also, the tail of the anchor cable
Portion is stretched out from the anchor cable hole；The anchor cable is the harness of more steel strand wires composition, also, the anchor cable is from tail portion to front end
The free segment and anchoring section for being divided into revealed section, being set in anchor cable hole；It is provided in the section of the anchoring section multiple
Interval and steel pipe arranged side by side are coaxially disposed between each steel pipe, also, each steel strand wires are along the outer wall of the steel pipe
Setting, so as to be isolated between each steel strand wires, also, the periphery of the steel strand wires is provided with the first dead ring, to by institute
Steel strand wires are stated to be fastened on the steel pipe；Independent bunchy and periphery are logical between each steel strand wires between the steel pipe described in any two
Cross the fastening of the second dead ring.
Further, above-mentioned prestressed anchor Cable Structure is provided with several brackets along its circumferential direction on each steel pipe, to
The steel pipe is supported, so that the steel pipe and the same shaft assignment of the anchor cable hole.
Further, above-mentioned prestressed anchor Cable Structure, the bracket are multiple and each bracket in the outer of the steel pipe
Week is distributed in dispersion shape.
Further, above-mentioned prestressed anchor Cable Structure is provided with multiple along the anchor cable in the section of the free segment
Hole axially spaced-apart and fixed middle bracket arranged side by side, to the fixation steel strand wires and the Grouting Pipe.
Further, above-mentioned prestressed anchor Cable Structure, it is described to determine to be provided with the multiple and steel strand wires one by one on middle bracket
The through-hole being correspondingly arranged is set the steel strand wires to card, is strutted with the harness for forming the steel strand wires；The fixed middle bracket
Outer wall setting is jagged, sets the Grouting Pipe to card.
Further, above-mentioned prestressed anchor Cable Structure, setting exists in the section of the anchoring section and/or the free segment
It is arranged in parallel between the more steel strand wires of the steel pipe periphery.
On the other hand, the invention also provides a kind of prestress anchorage cable once grouting construction method, this method includes as follows
Step: preparing the anchor cable of prestressed anchor Cable Structure as described in any one of claim 1 to 7, and to the predeterminated position of soil layer into
Row drilling carries out cleaning bottom of hole and cleaning to form anchor cable hole after pore-forming；By the anchor cable and the prestressed anchor Cable Structure
Grouting Pipe is transferred to the anchor cable hole；Slip casting is carried out into the anchor cable hole by the Grouting Pipe, also, is revolved in slip casting
Turn to promote the Grouting Pipe, and carry out slip casting while promoting the Grouting Pipe, so that in the process for extracting the Grouting Pipe out
In slip casting carried out into the anchor cable hole by the Grouting Pipe.
Further, above-mentioned prestress anchorage cable once grouting construction method, the Grouting Pipe are whirl spraying rod structure, also,
Before the Grouting Pipe is transferred to the anchor cable hole, nozzle is installed in the front end of the Grouting Pipe, so that the Grouting Pipe
Slip casting is carried out using rotary spraying grouting method during slip casting.
Further, above-mentioned prestress anchorage cable once grouting construction method, in Grouting Pipe decentralization step, the note
Starch pipe along the hole wall of the anchor cable hole lowest part into the anchor cable hole lower section, and the front end of the Grouting Pipe stretches to institute
State the bottom hole of anchor cable hole.
Prestressed anchor Cable Structure provided by the invention and prestress anchorage cable once grouting construction method, by anchoring section
It is provided with multiple intervals and steel pipe arranged side by side in section, is coaxially disposed between each steel pipe, also, each steel strand wires are along steel pipe
Outer wall setting, is arranged in parallel and mutually isolated between the steel strand wires of outer wall of steel pipe setting, leads to avoid winding between steel strand wires
Cause its intensity impacted, while after each steel strand wires are wound around on steel pipe, surrounding is fastened by the first dead ring, to ensure that steel twists
Line is fastened on the outer wall of steel pipe；Also, the position of steel pipe is not present in the section of anchoring section, interior phase between each steel strand wires
Mutually contact periphery be arranged with the second dead ring, to realize the fastening and connection between each steel strand wires, thus avoid steel strand wires it
Between winding so that combination bunchy is close in the contact of each steel strand wires inner circumferential, that is to say, that steel strand wires in the application pass through steel pipe, the
One dead ring and the second dead ring are fastened, and to realize that transfers asks stability, avoid steel strand wires tangle up；Meanwhile
It is spaced setting between Grouting Pipe and anchor cable, can avoid the contact connectio between Grouting Pipe and anchor cable, i.e., between Grouting Pipe and anchor cable
It is mutually indepedent to exist, and then anchor cable when subsequent slip casting is convenient for be embedded in slurries, and Grouting Pipe is with slip casting while, is promoted and is revolved
Turn, i.e., Grouting Pipe is extracted on marginal not slurry side out, and then avoiding the damage of Grouting Pipe and Grouting Pipe from being embedded in slurries causes slurries to shrink
Cause the problem of requiring supplementation with slip casting, the primary intensity completed slip casting and improve anchor cable body can be realized, to efficiently solve
The problem of prior art once grouting deficiency causes secondary after-teeming to starch, simultaneously because only needing once grouting, saves the time, accelerates
Construction speed.Without waiting pipe and Grouting Pipe can be recycled, and save material.
Further, Grouting Pipe can be whirl spraying rod structure, and the front end protruded into anchor cable hole is provided with nozzle, and nozzle is also
It can be jet drill rig, to be sprayed the slurries in Grouting Pipe to anchor cable hole using Pressure Revolving Blast-Grout, i.e., Grouting Pipe is set
It sets the end outside anchor cable hole and is connected with high-pressure injection pump, the front end of Grouting Pipe is connected with jet drill rig, to be infused using whirl spraying
Slurry processes carry out slip casting, and especially, rotary spraying grouting method progress range of grouting is wide, pressure is big, accelerate injection speed, greatly improve it
Slip casting effect can obtain preferable economic and social benefit.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of prestressed anchor Cable Structure provided in an embodiment of the present invention；
Fig. 2 is the cross-section diagram in Fig. 1 at A-A；
Fig. 3 is the cross-section diagram in Fig. 1 at B-B；
Fig. 4 is the cross-section diagram in Fig. 1 at C-C;
Fig. 5 is the flow diagram of prestress anchorage cable once grouting provided in an embodiment of the present invention construction.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Constructive embodiment:
Referring to Fig. 1 to Fig. 4, it illustrates the preferred structures of prestressed anchor Cable Structure provided in an embodiment of the present invention.As shown,
The structure includes: anchor cable hole 1, anchor cable 2 and Grouting Pipe 3；Wherein,
Anchor cable hole 1 is provided in soil layer, to bury anchor cable 2 and contain the slurries of Grouting Pipe 3 to realize the embedded of anchor cable 2.Tool
Body, it can be crept by pneumatic down-hole hammer or Pneumatic immpacting rotary drilling technique drills.
It is provided with anchor cable 2 in anchor cable hole 1, reinforces country rock to form anchoring body, improves bearing capacity of the wall rock；Also, anchor
The tail portion (left upper end as shown in Figure 1) of rope 2 is stretched out from anchor cable hole 1, i.e. 2 part of anchor cable inside that anchor cable hole 1 is arranged in, anchor
The tail portion of rope 2 is located at outside anchor cable hole 1, and the front end (bottom righthand side as shown in Figure 1) of anchor cable 2 is located in anchor cable hole 1 and is located at anchor cable
The bottom hole position in hole 1, so that 2 part of anchor cable is embedded in anchor cable hole 1.Wherein, the slurry that anchoring body can be sprayed by jet drill rig
Liquid, that is, cement slurry is formed, in the present embodiment, for the stability and intensity for ensuring anchoring body, it is preferable that anchoring body is general by whirl spraying
Slurries, that is, cement slurry of logical high-pressure rotary jet grouting pile borer drill rod injection is formed.Wherein, Grouting Pipe 3 can be whirl spraying rod structure, stretch
The front end (bottom right section as shown in Figure 1) entered in anchor cable hole 1 is provided with nozzle (not shown), and nozzle can also bore for whirl spraying
Machine, to be sprayed the slurries in Grouting Pipe 3 to anchor cable hole 1 using Pressure Revolving Blast-Grout, i.e., Grouting Pipe 3 is arranged in anchor cable
End outside hole 1 is connected with high-pressure injection pump, and the front end of Grouting Pipe 3 is connected with jet drill rig, so as to using rotary spraying grouting method into
Row slip casting, especially, rotary spraying grouting method progress range of grouting is wide, pressure is big, accelerates injection speed, greatly improves its slip casting effect
Fruit.
Grouting Pipe 3 is also set up in anchor cable hole 1, to carrying out slip casting in anchor cable hole 1.Also, Grouting Pipe 3 and anchor cable 2 are simultaneously
Row and interval setting, i.e., there is no contact and interconnected relationships between the two.Specifically, 3 part of Grouting Pipe is arranged in anchor cable
The inside in hole 1, so that 2 part of anchor cable is embedded in anchor cable hole 1, and the Grouting Pipe 3 by being arranged in outside anchor cable hole 1 connects slip casting
The equipment such as pump, to realize slip casting.To be transferred to anchor cable hole 1 convenient for the decentralization of anchor cable 2, it is preferable that the front end of anchor cable 2 is arranged
There is guiding cap 21, is oriented to the decentralization to anchor cable 2.Wherein, Grouting Pipe 3 can be arranged along the inner hole wall of anchor cable hole 1, with
Just the contact connectio between Grouting Pipe 3 and anchor cable 2 is avoided, i.e., is existed independently of each other between Grouting Pipe 3 and anchor cable 2, and then be convenient for
Anchor cable 2 is embedded in slurries when subsequent slip casting, and Grouting Pipe 3 is with slip casting while is promoted and rotated, i.e. marginal not slurry side extraction note
Pipe 3 is starched, and then avoiding the damage of Grouting Pipe 3 and Grouting Pipe 3 from being embedded in slurries causes slurries contraction to cause to require supplementation with slip casting
The problem of, the primary intensity completed slip casting and improve anchor cable body can be realized.
Anchor cable 2 be more steel strand wires 22 composition harness, also, anchor cable 2 from tail portion to front end (bottom right as shown in Figure 1
End) it is divided into revealed section 23, free segment 24 and anchoring section 25.Specifically, anchor cable 2 is divided into revealed section from tail portion to front end
23, the inside that anchoring body is embedded in anchor cable hole 1 is arranged in free segment 24 and anchoring section 25, free segment 24 and anchoring section 25.
Wherein, anchor cable 2 is the harness of more steel strand wires 22 composition, is illustrated for four in the present embodiment, certainly also can be it
His quantity does not do any restriction to it in the present embodiment.
It is provided with multiple intervals and steel pipe 4 arranged side by side in the section of anchoring section 25, is coaxially set between each steel pipe 4
It sets, also, each steel strand wires 22 are arranged along the outer wall of steel pipe 4, so as to be isolated between each steel strand wires 22, also, steel strand wires 22 is outer
The first dead ring 5 is provided with week, steel strand wires 22 to be fastened on the outer wall of steel pipe 4.Specifically, as shown in Fig. 2, anchoring
In the section of section 25, multiple coaxial arranged side by side and intermittent steel pipes 4, each 22 edge of steel strand wires are provided between more steel strand wires 22
The outer wall of steel pipe 4 is arranged, and is arranged in parallel between the steel strand wires 22 of 4 outer wall of steel pipe setting and mutually isolated, to avoid steel strand wires
After winding causes its intensity impacted between 22, while each steel strand wires 22 are wound around on steel pipe 4, surrounding passes through the first dead ring
5 fastenings, to ensure that steel strand wires 22 are fastened on the outer wall of steel pipe 4.After the decentralization of anchor cable 2, each steel pipe 4 and anchor cable hole 1 are coaxial
Setting so that harness and anchor cable hole 1 that the steel strand wires 22 being arranged outside steel pipe 4 form are coaxially disposed i.e. same shaft assignment, and makes
The equal slip casting of the surrounding of steel strand wires 22 ensures the stabilization of steel strand wires 22 to realize the fixation of steel strand wires 22 by the slurries of solidification
Property, thus the further bearing capacity of country rock.Wherein, the first dead ring 5 is ring structure, and inner wall is tightly attached to each steel strand wires 22
Periphery so that 22 inner circumferential of each steel strand wires is locked to steel pipe 4.To ensure the fixed stability of steel pipe 4, it is preferable that each steel pipe 4
On its circumferential direction is provided with several support frames 7, to supporting steel pipe 4, so that when steel pipe 4 is in decentralization to anchor cable hole 1 and anchor
The same shaft assignment in rope hole 1, and then ensure harness and the i.e. same shaft assignment of the coaxial arrangement of anchor cable hole 1 that each steel strand wires 22 form.Further
Preferably, support frame 7 can be multiple, and be distributed in the circumferential direction of the outer periphery steel pipe 4 of steel pipe 4 in dispersion shape, and then further
Ensure the same shaft assignment of steel pipe 4.
Independent bunchy and periphery pass through the second dead ring 6 and fasten between each steel strand wires 22 between any two steel pipe 4.
Specifically, as shown in figure 3, the position of steel pipe 4 is not present in the section of anchoring section 25, inner circumferential phase mutual connection between each steel strand wires 22
Touching periphery be arranged with the second dead ring 6, to realize fastening and connection between each steel strand wires 22, thus avoid steel strand wires 22 it
Between winding, that is, avoid 22 tangle up of steel strand wires.Wherein, the second dead ring 6 is ring structure, and inner wall is tightly attached to each steel and twists
The periphery of line 22, so that combination bunchy is close in the contact of 22 inner circumferential of each steel strand wires.
Be provided in the section of free segment 24 it is multiple along 1 axially spaced-apart of anchor cable hole and it is arranged side by side it is fixed in bracket 8, use
To fix steel strand wires 22 and Grouting Pipe 3.Specifically, as shown in figure 4, interval setting is multiple in the section of free segment 24 is used for general
The distracted fixed middle bracket 8 of the harness that steel strand wires 22 form, and also can be used for fixing Grouting Pipe 3.Wherein, fixed middle bracket 8 can be
Circular laminated structure is determined to be provided with several through-holes 81 being arranged in a one-to-one correspondence with steel strand wires 22 on middle bracket 8, be set to card
Steel strand wires 22 are strutted with the harness for forming steel strand wires 22；Each through-hole 81 can be along the uniformly distributed distribution of circumferential direction of surely middle bracket 8.It is fixed
The edge setting jagged 82 of middle bracket 8, Grouting Pipe 3 is arranged at the notch 81 of the fixed middle bracket 8, to avoid Grouting Pipe 3
Inclination etc..Steel strand wires 22 in the section of free segment 24 are parallel to each other, to avoid twining between steel strand wires 22 and Grouting Pipe 3
Around.In fixed the setting of bracket 8 can make composition anchor cable 2 steel strand wires 22 will not tangle up so that anchor cable 2 was being installed
Shape can be kept in journey.
To sum up, the prestressed anchor Cable Structure provided in the present embodiment, it is multiple by being provided in the section of anchoring section 25
Interval and steel pipe 4 arranged side by side are coaxially disposed between each steel pipe 4, also, each steel strand wires 22 are arranged along the outer wall of steel pipe 4, In
It is arranged in parallel between the steel strand wires 22 of 4 outer wall of steel pipe setting and mutually isolated, causes it strong to avoid winding between steel strand wires 22
Spend impacted, while after each steel strand wires 22 are wound around on steel pipe 4, surrounding is fastened by the first dead ring 5, to ensure steel strand wires
22 are fastened on the outer wall of steel pipe 4；Also, the position of steel pipe 4 is not present in the section of anchoring section 25, between each steel strand wires 22
The inner circumferential periphery that contacts with each other is arranged with the second dead ring 6, to realize fastening and connection between each steel strand wires 22, to avoid
Winding between steel strand wires 22 is so that combination bunchy is close in the contact of 22 inner circumferential of each steel strand wires, that is to say, that the steel in the application twists
Line 22 is fastened by steel pipe 4, the first dead ring 5 and the second dead ring 6, to realize that transfers asks stability, avoids steel
22 tangle up of twisted wire；Meanwhile setting is spaced between Grouting Pipe 3 and anchor cable 2, it can avoid the contact between Grouting Pipe 3 and anchor cable 2
Connection, i.e., exist independently of each other between Grouting Pipe 3 and anchor cable 2, and then anchor cable 2 when subsequent slip casting is convenient for be embedded in slurries, and
It is promoted and is rotated while Grouting Pipe 3 is with slip casting, i.e., Grouting Pipe 3 is extracted on marginal not slurry side out, and then avoids damage and the note of Grouting Pipe 3
Slurry pipe 3, which is embedded in slurries, causes slurries contraction to cause the problem of requiring supplementation with slip casting, and primary completion slip casting can be realized and mention
The high intensity of anchor cable body, to efficiently solve the problem of prior art once grouting deficiency causes secondary after-teeming to starch, while by
In only needing once grouting, the time is saved, accelerates construction speed.Without waiting pipe and Grouting Pipe can be recycled, and save material.
Further, Grouting Pipe 3 can be whirl spraying rod structure, and the front end protruded into anchor cable hole 1 is provided with nozzle, nozzle
It also can be jet drill rig, the slurries in Grouting Pipe 3 to be sprayed to anchor cable hole 1 using Pressure Revolving Blast-Grout, i.e. slip casting
The end that pipe 3 is arranged in outside anchor cable hole 1 is connected with high-pressure injection pump, and the front end of Grouting Pipe 3 is connected with jet drill rig, to use
Rotary spraying grouting method carries out slip casting, and especially, rotary spraying grouting method progress range of grouting is wide, pressure is big, accelerates injection speed, significantly
Its slip casting effect is improved, preferable economic and social benefit can be obtained.
Embodiment of the method:
It is the preferred structure of prestressed anchor Cable Structure once grouting construction method provided in an embodiment of the present invention referring to Fig. 5.Such as
Shown in figure, this method comprises the following steps:
Step S1, the anchor cable of the prestressed anchor Cable Structure of any one of such as claim 1 to 7 of preparation, and to the predeterminated position of soil layer
It drills to form anchor cable hole, and carries out cleaning bottom of hole and cleaning after pore-forming.
Specifically, firstly, making above-mentioned anchor cable 2 using steel strand wires 22, that is, cutting machine blanking is used to be pre-designed to obtain
More steel strand wires 22 of length should not use electric arc or acetylene flame cutting, and avoid carrying out outdoor work when thunderstorm；And it is compiled
Beam, i.e., as shown in Figures 1 to 4, anchor cable 2 are divided into revealed section 23, free segment 24 and anchoring section 25 from tail portion to front end, production
In the process, the steel strand wires 22 for forming anchor cable 2 are formed into harness, is then provided in the section of free segment 24 multiple along anchor cable hole
1 axially spaced-apart and fixed middle bracket 8 arranged side by side, set steel strand wires 22 by the card of through-hole 81 on surely middle bracket 8, and in free segment
It is parallel to each other between the steel strand wires 24 in 24 sections；Then, it is provided with multiple intervals in the section of anchoring section 25 and is arranged side by side
Steel pipe 4, be coaxially disposed between each steel pipe 4, each steel strand wires 22 are arranged along the outer wall of steel pipe 4, so that the interval of each steel strand wires 22
From, also, and the periphery of steel strand wires 22 is provided with the first dead ring 5, steel strand wires 22 to be fastened to the outer wall of steel pipe 4
On, while independent bunchy and periphery are fastened by the second dead ring 6 between each steel strand wires 22 between any two steel pipe 4,
And it is parallel to each other between the steel strand wires 24 in 25 section of anchoring section.Then, anchor cable drilling is carried out, i.e., is crept into using pneumatic down-hole hammer
Or Pneumatic immpacting rotary drilling technique carries out drilling and forms anchor cable hole 1, and a cleaning bottom of hole should be carried out after the completion of pore-forming, eliminates wrong in hole
Platform and loosening rubble；Whole Kong Houying is cleaned using compressed air.Wherein, it is not present between the production of anchor cable 2 and anchor cable drilling
Sequencing can also carry out simultaneously.
Step S2 transfers the Grouting Pipe of anchor cable and prestressed anchor Cable Structure to anchor cable hole.
It specifically,, should be timely and after anchor hole is qualified on inspection firstly, checking anchor cable hole 1 until 1 passed examination of anchor cable hole
Grouting Pipe 3 and anchor cable 2 are installed, the open-hole time is reduced；Then, after 1 pore-forming of anchor cable hole, first along the inner hole wall of anchor cable hole 1
Lowest part places Grouting Pipe 3 into anchor cable hole 1, and Grouting Pipe 3 need to go deep into the bottom hole of Grouting Pipe 3, and when transferring Grouting Pipe 3,
In the section of free segment 24, Grouting Pipe 3 is fastened on the indentation, there of bracket 8 in surely, and does not contact with the interval of anchor cable 2；Finally,
After the completion of Grouting Pipe 3 is placed, anchor cable 2 is installed, and after anchor cable 2 is installed, the equipment such as Grouting Pipe 3 and grouting pump carry out group
Load connects.And before 3 lower section of Grouting Pipe, rear nozzle or jet drill rig are installed in front end in advance.
Step S3 carries out slip casting into anchor cable hole by Grouting Pipe, also, rotates and upgrades Grouting Pipe in slip casting, and
Slip casting is carried out while hoisting grouting pipe, so as to be infused by Grouting Pipe into anchor cable hole during extracting Grouting Pipe out
Slurry.
Specifically, after the front end of Grouting Pipe 3 and nozzle or jet drill rig to target depth, nozzle or jet drill rig pass through note
Slurry pipe 3 carries out slip casting into anchor cable hole 1, also, Grouting Pipe 3 is rotated and upgraded in slip casting, and while hoisting grouting pipe 3 into
Row slip casting, so as to carry out slip casting into anchor cable hole 1 by Grouting Pipe 3 during extracting Grouting Pipe 3 out, slip casting is completed same
When, Grouting Pipe 3 is extracted out from anchor cable hole 1, and can be carried out after the cement slurry in anchor cable hole 1 reaches predetermined strength to anchor cable 2
Tensioning and locking.Wherein, slip casting, anchoring are completed by the way that nozzle or jet drill rig are rotated and promoted in anchor cable hole 1 when slip casting
Nozzle or jet drill rig are promoted and are rotated at least each 1 time when 25 slip casting of section, and the molding of 24 once grouting of free segment is completed slip casting and made
Industry.
To sum up, the prestressed anchor Cable Structure once grouting construction method provided in the present embodiment utilizes above-mentioned prestress anchorage cable
Structure carry out mortar depositing construction, due to above-mentioned prestressed anchor Cable Structure have said effect, therefore with above-mentioned prestressed anchor Cable Structure into
The prestressed anchor Cable Structure once grouting construction method of row mortar depositing construction also has said effect.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of prestressed anchor Cable Structure characterized by comprising the anchor cable hole (1) being arranged in soil layer；Wherein,
The anchor cable hole (1) be internally provided with anchor cable (2) and with the anchor cable (2) spaced Grouting Pipe (3)；
The anchor cable (2) is the harness of more steel strand wires (22) composition, also, the anchor cable (2) successively divides from tail portion to front end
For revealed section (23), the free segment (24) and anchoring section (25) that are set in anchor cable hole (1)；
Be provided with multiple intervals and steel pipes (4) arranged side by side in the section of the anchoring section (25), each steel pipe (4) it
Between be coaxially disposed, also, each steel strand wires (22) along the steel pipe (4) outer wall be arranged so that each steel strand wires (22)
Between be isolated, also, the periphery of the steel strand wires (22) is provided with the first dead ring (5), to the steel strand wires (22) are tight
Gu on to the steel pipe (4)；
Independent bunchy and periphery pass through the second dead ring between each steel strand wires (22) between the steel pipe described in any two (4)
(6) it fastens.
2. prestressed anchor Cable Structure according to claim 1, which is characterized in that
Its circumferential direction is provided with several support frames (7) on each steel pipe (4), to support the steel pipe (4), so that described
Steel pipe (4) and the anchor cable hole (1) same to shaft assignment.
3. prestressed anchor Cable Structure according to claim 2, which is characterized in that support frame as described above (7) is multiple and each institute
The periphery for stating support frame (7) Yu Suoshu steel pipe (4) is distributed in dispersion shape.
4. prestressed anchor Cable Structure according to any one of claims 1 to 3, which is characterized in that
Be provided in the section of the free segment (24) it is multiple along the anchor cable hole (1) axially spaced-apart and it is arranged side by side it is fixed in
Bracket (8), to the fixation steel strand wires (22) and the Grouting Pipe (3).
5. prestressed anchor Cable Structure according to claim 4, which is characterized in that
Multiple through-holes (81) being arranged in a one-to-one correspondence with the steel strand wires (22) are provided on the fixed middle bracket (8), to card
If the steel strand wires (22), are strutted with the harness for forming the steel strand wires (22)；
Jagged (82) are arranged in the outer wall of the fixed middle bracket (8), set the Grouting Pipe (3) to card.
6. prestressed anchor Cable Structure according to any one of claims 1 to 3, which is characterized in that
It is being parallel to each other between the more steel strand wires (22) in the section of the anchoring section (25) and/or the free segment (24)
Setting.
7. prestressed anchor Cable Structure according to any one of claims 1 to 3, which is characterized in that
The Grouting Pipe (3) is whirl spraying rod structure, and the front end protruded into the anchor cable hole (1) is provided with nozzle, to use
Rotary spraying grouting method sprays the slurries in the Grouting Pipe (3) to the anchor cable hole (1).
8. a kind of prestress anchorage cable once grouting construction method, which comprises the steps of:
The anchor cable of prestressed anchor Cable Structure as described in any one of claim 1 to 7 is prepared, and the predeterminated position of soil layer is carried out
Drilling carries out cleaning bottom of hole and cleaning to form anchor cable hole after pore-forming；
The Grouting Pipe of the anchor cable and the prestressed anchor Cable Structure is transferred to the anchor cable hole；
Slip casting is carried out into the anchor cable hole by the Grouting Pipe, also, the Grouting Pipe is rotated and upgraded in slip casting, and
Slip casting is carried out while promoting the Grouting Pipe, so that by the Grouting Pipe to described during extracting the Grouting Pipe out
Slip casting is carried out in anchor cable hole.
9. prestress anchorage cable once grouting construction method according to claim 8, which is characterized in that
The Grouting Pipe is whirl spraying rod structure, also, before the Grouting Pipe is transferred to the anchor cable hole, in the slip casting
Nozzle is installed in the front end of pipe, so that the Grouting Pipe carries out slip casting using rotary spraying grouting method during slip casting.
10. prestress anchorage cable once grouting construction method according to claim 8 or claim 9, which is characterized in that
In Grouting Pipe decentralization step, the Grouting Pipe along the hole wall of the anchor cable hole lowest part to the anchor cable hole
Interior lower section, and the front end of the Grouting Pipe stretches to the bottom hole of the anchor cable hole.
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| CN111074885A (en) * | 2019-12-13 | 2020-04-28 | 济南市市政工程设计研究院（集团）有限责任公司 | Telescopic burr type anchor cable suitable for soft soil and construction method |
| CN114956730A (en) * | 2022-05-27 | 2022-08-30 | 周海军 | Manufacturing method and grouting process of anchor slurry of engineering anchor cable |
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