CN109707424A - A kind of flexible self-anchored type prestressed anchor of the anti-hook of band - Google Patents
A kind of flexible self-anchored type prestressed anchor of the anti-hook of band Download PDFInfo
- Publication number
- CN109707424A CN109707424A CN201910135683.4A CN201910135683A CN109707424A CN 109707424 A CN109707424 A CN 109707424A CN 201910135683 A CN201910135683 A CN 201910135683A CN 109707424 A CN109707424 A CN 109707424A
- Authority
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- China
- Prior art keywords
- hook
- sleeve
- mobile base
- anchored
- prestressed anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 34
- 238000004873 anchoring Methods 0.000 abstract description 19
- 230000008093 supporting effect Effects 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of flexible self-anchored type prestressed anchors of the anti-hook of band, it is spirally connected the sleeved body of rod including top, mobile base is provided in the sleeve, the mobile base lower surface, which is connected, to have elastic component, mobile base upper surface is fixed with one group of anti-hook, the pawl head of the anti-hook extends to outside sleeve, and the neck of hook of anti-hook is cooperatively connected with the load-carrying ring that sleeve top is arranged in by zigzag card slot.It is the configuration of the present invention is simple, ingenious in design, the characteristic of prestressed anchor flexible support is given full play to, optimize supporting-country rock system " support rigidity " and " supporting intensity " configuration, prestressing force is provided by the mechanical build-in force between anchored end and anchoring matrix hole wall, cooperation anchored end it is ingenious construction make prestressing force uniformly, synchronize undertake in anchoring end device on, it increases anchor rod prestress: self-anchored type anchoring can not only be carried out with the deformation of hole wall country rock or the variation of stress field, and sufficiently meet requirement of the modern support theory to " supporting time ".
Description
Technical field
The present invention relates to Anchor in Geotechnical Engineering anchorage technology fields, more particularly, to a kind of flexible self-anchored type of the anti-hook of band
Prestressed anchor.
Background technique
In geotechnical engineering field, prestressed anchor anchors the Rock-soil Mass Structure reinforcement technique as a kind of flexible support, extensively
It is general to be applied in the engineerings such as building foundation pit, side slope, mine tunnel and library dam.Modern support theory is thought should be by Rock And Soil and branch
Protection structure is regarded as playing carrying effect jointly by the compound system that two kinds of materials form, and supporting-country rock system is allowed to have
The compatible deformation of limitation reduces the bearing capacity of supporting construction to play the self-bearing ability of country rock to greatest extent, that is, thinks pre- and answer
Power anchor pole has " flexible support " feature.The key that prestressed anchor plays flexible support is that how correctly to handle supporting-encloses
" supporting intensity " and " support rigidity " problem of the constituted composite system of rock mass system.
Common prestressed anchor has mechanical expansion shell prestressed anchor, resin prestressed anchor and cement-roll in engineering at present
Prestressed anchor etc..
Mechanical expansion shell anchor pole is suitable for hard surrounding rock, answers in advance by the mechanical build-in force offer between swollen shell and hole wall country rock
Power, and when deforming or destroying with wedge-shaped cubical expansion shell rigid contact, limited areal country rock, easily anchor pole is caused to be sent out
Raw relaxation causes serious loss in the prestressing force short time, and " support rigidity " of composite system not enough causes loss of prestress,
Later period draws operation not only time-consuming and laborious the benefit of anchor pole, and misses Optimum Support opportunity already, supporting effect and economic effect
Benefit substantially reduces.
Resin prestressed anchor and cement-roll prestressed anchor mainly fill gap existing for composite system by slurry,
To increase contact area between anchored end and anchoring matrix hole wall, " support rigidity " of composite system, the type anchor are in a disguised form increased
The scope of flexible support is not belonging on bar anchoring definite meaning, because flexible support is emphasized " to allow supporting-country rock system
Generate conditional compatible deformation ", but no matter using resin material or cement material as solidification slurries, it is whole rigid after solidification
Spend it is larger, once external environment variation makes stress field of the surrounding rock change and causes the contact of a certain range entoplasm, rock or slurry-rock
When face ruptures, additional prestressed drawing effect easily causes entire composite system that linksystem cracking destruction, anchor pole occurs
Anchor force can also gradually decrease and even lose anchor, and similar anchor pole is difficult to meet that flexible support followed " allows supporting-country rock body
System generates restricted compatible deformation " requirement, supporting-country rock system exist it is excessively high because of " support rigidity " due to lead to that " supporting is strong
The insufficient problem of degree "；Further, it is longer that the freezing period that slurries itself have will lead to construction period, and modern support theory
The supporting time problem for increasingly paying attention to arriving Rock-soil Mass Structure, for needing to consider the engineering of supporting time, similar slip casting
Anchor pole is there is a possibility that we lose Optimum Support opportunity, and collapse for certain landslides for needing to provide instantaneous supporting power, country rock
It falls into and waits emergency works, such grouted anchor bar is even more that can not apply.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of flexible self-anchored type prestressed anchor of the anti-hook of band, optimizations
It solves the problems, such as " supporting intensity " and " support rigidity " existing for supporting-country rock compound system, keeps outer Prestressing same
Step equably undertakes in anchored end, effectively increases prestressed anchor design strength.
To achieve the above object, the present invention can take following technical proposals:
The flexible self-anchored type prestressed anchor of the anti-hook of band of the present invention, including top are spirally connected the sleeved body of rod, described
Mobile base is provided in sleeve, the mobile base lower surface, which is connected, to have elastic component, and mobile base upper surface is fixed with one
The anti-hook of group, the pawl head of the anti-hook extend to outside sleeve, and the neck of hook of anti-hook and the load-carrying ring that sleeve top is arranged in are logical
Cross the mating connection of zigzag card slot.
The body of rod is screwed onto sleeve, and is provided with the groove matched with the elastic element at the top of the body of rod.
The anti-hook is to extend out shape hook formation made of high resiliency stainless steel, is circumferentially uniformly arranged along load-carrying ring.
The zigzag card slot is one-way lock fixed pattern structure, and the anti-hook is relative to the upward one-way movement of load-carrying ring.
The flexible self-anchored type prestressed anchor of the anti-hook of band provided by the invention, it is simple in sturcture, ingenious in design, it gives full play to
The characteristic of prestressed anchor flexible support optimizes supporting-country rock system " support rigidity " and " supporting intensity " configuration,
Prestressing force is provided by the mechanical build-in force between anchored end and anchoring matrix hole wall, the ingenious construction of cooperation anchored end keeps prestressing force equal
It is even, synchronize undertake in anchoring end device on, increase anchor rod prestress: the body of rod on the one hand being enable firmly to be anchored in hole wall country rock
It is interior, and self-anchored type anchoring can be carried out with the deformation of hole wall country rock or the variation of stress field, the entire supporting-of effective protection is enclosed
The stability of rock compound system；It can carry out prestressed stretch-draw immediately after the installation of another aspect device to provide instantaneous anchor force,
Requirement of the modern support theory to " supporting time " has been fully demonstrated, the engineerings such as side slope, dam body and underground chamber are highly suitable for
Instantaneous or permanent anchoring support.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of anti-hook and mobile base in Fig. 1.
Fig. 3 is the structural schematic diagram of load-carrying ring in Fig. 1.
Fig. 4 is the structural schematic diagram that load-carrying ring and anti-hook are cooperatively connected by zigzag card slot in Fig. 1.
Fig. 5 is the structural schematic diagram that the present invention is in anchoring status..
In figure: 1-sleeve；2-the bodies of rod；3-mobile bases；4-elastic elements；5-anti-hooks；6-load-carrying rings；7-sawtooth
Shape card slot；8-outer anchoring pieces.
Specific embodiment
As shown in Figs. 1-5, the flexible self-anchored type prestressed anchor of the anti-hook of band of the present invention, including sleeve 1 and bar
Body 2,2 top of the body of rod are screwed onto sleeve 1, and by screwing jacking or exiting, and 2 tail portion of the body of rod then extends on the outside of Rock And Soil,
And it is connected with outer anchoring piece 8.Mobile base 3 is installed, 3 lower surface of mobile base is fixed with as elastic element 4 in sleeve 1
Compressed spring.The compressed spring by the jacking of the body of rod 2 or can exit with 2 top contact free of the body of rod, can control compressed spring
Position and decrement in sleeve 1, and moving up for mobile base 3 can be pushed.In order to ensure compressed spring is located at central axis
At line, the groove matched with compressed spring outer diameter is offered at the top of the body of rod 2.
There are three the anti-hook 5 being uniformly distributed circumferentially, anti-hook 5 is to extend out shape hook for the upper surface welding of mobile base 3
Shape structure, each hook-like head all extend to outside sleeve 1, and the neck of hook then passes through zigzag with the load-carrying ring 6 for being screwed onto 1 top of sleeve
Card slot 7 is cooperatively connected.The preferred height of load-carrying ring 6 is greater than 40 mm, thickness is greater than the stainless steel annulus of 15mm.Before being anchored, hook
In handle retraction sleeve 1 and there is stronger outer bullet trend, when carrying out anchoring operation, with moving up for mobile base 3, the neck of hook stretches out
Sleeve 1 simultaneously pops up outward, keeps the zigzag card slot 7.2 of the zigzag card slot 7.1 and 6 inside edge of load-carrying ring on the outside of the neck of hook close
Fitting, meanwhile, pawl head flexes outward out and is embedded into the wall country rock of hole.When specific design, since anchor pole relies primarily on pawl head
Mechanical anchoring force between the wall country rock of hole provides prestressing force, therefore when prestressing force demand is larger, to the rigidity requirement of pawl head
It is higher；Simultaneously as anchoring degree of stability and anchor force of the pawl head in the wall country rock of hole depend on to a certain extent its
Expansion degree in the wall country rock of hole, thus it is higher to the aeroelastic requirements of the neck of hook when specific design, and anti-hook 5 is stainless by high resiliency
Steel (can preferentially select rigidity and the higher SUS301 stainless steel material of intensity) is made.In order to make anti-hook 5 relative to load-carrying ring 6
Do it is unidirectional move upwards, zigzag card slot 7 use one-way lock fixed pattern structure.Specifically, the zigzag card slot 7.1 on the outside of the neck of hook
Briar tooth be arranged diagonally downward, 6 inside edge zigzag card slot 7.2 of load-carrying ring tilts upward setting, when anti-hook 5 upwards
When movement, zigzag card slot 7.1 and 6 inside edge zigzag card slot 7.2 of load-carrying ring on the outside of the neck of hook complement each other to form locking,
Anti- hook 5 can be substantially prevented to move downward.
In use, then being driven by rotating outer anchoring piece 8 in the drilling for first having accomplished fluently apparatus of the present invention implantation
The body of rod 2 rotates jacking, pushes compressed spring to move up and increase its decrement, mobile base 3 moves up therewith, the pawl head of anti-hook 5
It is constantly overhanging along the zigzag card slot 7.2 of 6 inside edge of load-carrying ring, be unfolded and be embedded into the wall country rock of hole to provide and answer in advance
Power；As the continuous rotation of the body of rod 2 moves up build-in force between anti-5 pawl head of hook and hole wall country rock and is gradually increased, when practical application, can
The rotation amount of the body of rod 2 is adjusted according to anchor rod prestress design strength.
When applying prestressing force, prestressing force is transmitted on load-carrying ring 6 by the body of rod 2 by sleeve 1, and load-carrying ring 6 is by zigzag
The build-in force on anti-hook 5 that card slot 7 is transmitted balanced the prestressing force, carries out prestress anchoraging with this；Carrying
6 one side of ring completes anchored end build-in force and prestressed balance, and another aspect load-carrying ring 6 can also make three anti-hooks 5
Stress is synchronous, uniform, and build-in force of the pawl head in the wall country rock of hole is uniformly transferred on load-carrying ring 6；In pawl head and load-carrying ring 6
7.2 tight clamping fit of zigzag card slot of edge effectively prevents pawl head and is pulled in inside sleeve 1 again in tension；The neck of hook
High-elastic characteristic can guarantee that the zigzag card slot 7.1 on the outside of the neck of hook can be tightly attached to always on load-carrying ring 6, to guarantee that pawl head can
Stablize build-in in the wall country rock of hole；The body of rod 2 and the compressed spring contact free in groove, and guarantee that compressed spring will not be with bar
The rotation of body 2 and rotate, prevent compressed spring from destroying because excessively rotating.
Further, after the completion of prestress application, cause hole wall country rock or entire branch when extraneous stress field changes
When shield-country rock system stress state changes, elastomeric property possessed by compressed spring can be such that its own decrement becomes
Change, and then control insertion degree of the pawl head of anti-hook 5 in the wall country rock of hole to carry out self-anchored type anchoring, changes compound system
Locating stress state protects entire supporting-country rock system not to be destroyed to adapt to the variation of external stress field, certain journey
Reduce " support rigidity " on degree and increase " supporting intensity ", and whole device carry out self-anchored type anchoring can effectively prevent it is pre-
Heavy losses occur in the stress short time.
Further, when actual requirement of engineering recycles anchor pole, the body of rod 2 need to only be rotated counterclockwise, so that it may so that
The body of rod 2 and sleeve 1 are detached from, and then extract the body of rod 2, can be recycled to partial devices, be reduced underground garbage and formed, dropped significantly
Low adverse effect of the anchoring support engineering to the construction in adjacent plot and the long-term plan in city and sustainable development, mentions significantly
High economic benefit and social benefit.
Claims (4)
1. a kind of flexible self-anchored type prestressed anchor of the anti-hook of band, it is characterised in that: be bolted with the bar of sleeve (1) including top
Body (2), the sleeve (1) is interior to be provided with mobile base (3), and mobile base (3) lower surface, which is connected, has elastic component (4),
Mobile base (3) upper surface is fixed with one group of anti-hook (5), and the pawl head of the anti-hook (5) extends to sleeve (1) outside, anti-hook
Load-carrying ring (6) of the neck of hook and setting of pawl (5) on sleeve (1) top is cooperatively connected by zigzag card slot (7).
2. the flexible self-anchored type prestressed anchor of the anti-hook of band according to claim 1, it is characterised in that: the body of rod
(2) it is screwed onto sleeve (1), and is provided with the groove matched with the elastic element (4) at the top of the body of rod (2).
3. the flexible self-anchored type prestressed anchor of the anti-hook of band according to claim 1, it is characterised in that: the anti-hook
(5) it to extend out shape hook formation made of high resiliency stainless steel, is circumferentially uniformly arranged along load-carrying ring (6).
4. the flexible self-anchored type prestressed anchor of the anti-hook of band according to claim 1, it is characterised in that: the zigzag
Card slot (7) is one-way lock fixed pattern structure, and the anti-hook (5) is relative to load-carrying ring (6) upward one-way movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135683.4A CN109707424B (en) | 2019-02-25 | 2019-02-25 | Flexible self-anchored prestressed anchor rod with reverse hook claw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135683.4A CN109707424B (en) | 2019-02-25 | 2019-02-25 | Flexible self-anchored prestressed anchor rod with reverse hook claw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707424A true CN109707424A (en) | 2019-05-03 |
| CN109707424B CN109707424B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910135683.4A Active CN109707424B (en) | 2019-02-25 | 2019-02-25 | Flexible self-anchored prestressed anchor rod with reverse hook claw |
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| Country | Link |
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| CN (1) | CN109707424B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006846A (en) * | 2021-03-24 | 2021-06-22 | 江苏麦廊新材料科技有限公司 | Recyclable anchor rod device and using method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113006846A (en) * | 2021-03-24 | 2021-06-22 | 江苏麦廊新材料科技有限公司 | Recyclable anchor rod device and using method thereof |
| CN113006846B (en) * | 2021-03-24 | 2023-08-18 | 江苏麦廊新材料科技有限公司 | Recoverable anchor rod device and using method thereof |
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| Publication number | Publication date |
|---|---|
| CN109707424B (en) | 2024-02-23 |
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