CN106917407A - A kind of combined prestressing force anchor cable for lifting anchor structure shear behavior - Google Patents
A kind of combined prestressing force anchor cable for lifting anchor structure shear behavior Download PDFInfo
- Publication number
- CN106917407A CN106917407A CN201710243380.5A CN201710243380A CN106917407A CN 106917407 A CN106917407 A CN 106917407A CN 201710243380 A CN201710243380 A CN 201710243380A CN 106917407 A CN106917407 A CN 106917407A
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- CN
- China
- Prior art keywords
- anchor cable
- sleeve
- anchor
- cable
- prestressing force
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Classifications
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- 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
-
- 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
Abstract
The present invention provides a kind of combined prestressing force anchor cable for lifting anchor structure shear behavior, belongs to rock mass reinforcing technical field.The anchor cable includes guiding cap, steel strand wires, tensioner ring, lock ring ring, sleeve and Grouting Pipe, sleeve is arranged near slide surface or potential slide surface, the shearing resistance effect of anchor structure can effectively be lifted, it is to avoid traditional prestress anchorage cable causes the large deformation even deficiency of slope instability destruction due to lacking shear resistance.Compared to traditional prestress anchorage cable, the present invention can increase anchor cable arrangement spacing simultaneously, anchor cable quantity be reduced, so as to save associated materials, time and input.This method outstanding advantage such as have process is simple, workable, save resources, shear structure position controllable.
Description
Technical field
The present invention relates to rock mass reinforcing technical field, particularly relating to a kind of the compound pre- of lifting anchor structure shear behavior should
Power anchor cable.
Background technology
In recent years, as Chinese national economy is fast-developing, country is to the side such as mineral resources, hydroelectric resources and traffic resource
The demand in face constantly rises, and corresponding geotechnical engineering problems emerge in an endless stream, wherein, crack caused by slope ground body deformation failure,
A series of punishment of disasters such as landslide and slump and reinforcing problem are relatively conventional.Conventional handle measure includes cutting slope off-load, subtracting
Weight back-pressure, friction pile, slip casting and prestress anchorage cable etc..Cutting slope off-load can forever change stress state and investment in slope ground body
At least, but easily limited by orographic condition；Lightening and adverse pressure is mainly used in administering the side slope that passage formula is slided, but still is limited by orographic condition
Make and easily cause secondary disaster；Friction pile anti-slide performance is strong, it is adaptable to the clear and definite side slope of potential water use；Slip casting method is applied to
Treatment soil-slope and jointed rock slope, can effectively improve resistance to compression, tension and the shearing strength of Rock And Soil, but the method is present
The problems such as treatment effect is uncontrollable, specific aim is not strong；Prestressed anchor reinforcement technology has simple structure, construction safety, disturbance
It is smaller, reduce investment outlay, universality strong and the advantages of effect is significant, be rapidly developed in recent years and extensive use.In prestressing force
In anchorage cable design and work progress, the large deformation feature and shear action of slope sliding face position are to anchor system non-deformability
Test is proposed, because the shear resistance of prestressed anchor Cable Structure is weak, when side slope body or larger sliding deformation, be frequently can lead to
Prestress anchorage cable deformation is even broken, and then causes prestress anchorage cable structural failure and slope instability.At present, by slope sliding,
Failure of cable problem is by the stability and security of potential impact slope project caused by Rock And Soil deformation, and prestress anchorage cable is used as one
Kind be axially further applied load structure, its use tube-in-tube structure to lift the integral anti-shearing performance of prestress anchorage cable there is not been reported.
The content of the invention
The present invention provides a kind of combined prestressing force anchor cable for lifting anchor structure shear behavior, in advance should using conventional with overcoming
When power anchor cable carries out slope reinforcement, because the deformation of slope ground body causes anchor cable to deform and then causes anchor structure Problem of Failure.
The anchor cable includes guiding cap, tensioner ring, lock ring ring, Grouting Pipe, sleeve and steel strand wires, and guiding cap is arranged on the anchor cable
Anchoring section end, be the free segment of the anchor cable after anchoring section, sleeve is located at free segment, and sleeve fixed by sleeve fixing bolt,
Steel strand wires run through whole anchor cable, and steel strand wires overcoat is set outside steel strand wires, and Grouting Pipe is located at whole anchor cable center, multiply steel strand wires
Outside sets lock ring ring, and tensioner ring is set between whole anchor cable and slip casting lithosome, and anchor cable is placed in drilling.
Wherein, multiply steel strand wires be three strands and more than.
Sleeve is pure steel design, reinforcement cage structure or reinforced concrete structure.
Sleeve two ends are provided with stud, and steel strand wires pass through sleeve, sleeve to be fixed on tensioner ring by end bolt structure.
Length sleeve is not less than 5m, when free section of anchor cable entire length is less than 5m, length sleeve and freedom length phase
Together, sleeve wall thickness be not less than 5mm, sleeve axial direction center overlapped with the potential slide surface position of gliding mass slide surface or side slope or
It is close.
The single application of sleeve or more than one combined type application.
The present invention construction technological process be：
(1) determine gliding mass slide surface position or calculate potential slide surface position using methods such as numerical simulations；
(2) drilling and forming hole；
(3) standard prestress anchorage cable is made；
(4) according to slide surface position, sleeve is arranged on the corresponding slide surface of standard prestress anchorage cable or potential slide surface
Position；
(5) anchor cable is installed and anchoring section slip casting；
(6) anchor pier makes；
(7) anchorage cable stretching；
(8) free section of anchor cable slip casting.
Above-mentioned technical proposal of the invention has the beneficial effect that：
It is of the invention to be obviously improved shear behavior of the anchor cable structure in key position compared with conventional prestress anchorage cable,
Conventional prestress anchorage cable is overcome to be also easy to produce large deformation in sliding surface position and cause the defect of failure of cable.By in conventional mark
Steel (or reinforcement cage structure, reinforced concrete structure) sleeve is fixed on quasi- anchor cable as shear structure, shear structure is crossed whole
Individual sliding surface and anchor into stabilization Rock And Soil among, make anchor structure that effective shear resistance can be provided near sliding surface, and then
The safety coefficient and stable state of side slope can be effectively improved.
Brief description of the drawings
Fig. 1 is the combined prestressing force anchor cable structure schematic diagram of lifting anchor structure shear behavior of the invention；
Fig. 2 is the A-A ' profiles of Fig. 1；
Fig. 3 is the B-B ' profiles of Fig. 1；
Fig. 4 is the C-C ' profiles of Fig. 1；
Fig. 5 is the D-D ' profiles of Fig. 1；
Fig. 6 is sleeve and tensioner ring connection diagram；
Fig. 7 be using this can be lifted anchor structure shear behavior combined prestressing force anchor cable structure construction flow chart；
Fig. 8 is the combined prestressing force anchor cable construction schematic diagram of the lifted anchor structure shear behavior of actual implementation.
Wherein：1- guiding caps；2- tensioner rings；3- lock ring rings；4- Grouting Pipes；5- sleeves；6- steel strand wires；7- steel strand wires are protected
Layer；8- sleeve fixing bolts；9- drills；10- slip casting Seed harvests.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
When the present invention is in existing slope project Scheme of Strengthening using conventional prestressed anchor Cable Structure, because of gliding mass or side slope
Rock And Soil deformation causes sliding surface (or potential sliding surface) position to produce large deformation and the anchor cable structure Problem of Failure that causes, there is provided a kind of
Lift the combined prestressing force anchor cable of anchor structure shear behavior.
By taking 6 rope steel strand prestress anchor cables as an example, as shown in Figure 1, Figure 2, Fig. 3, Fig. 4 and Fig. 5, shown in Fig. 6, the combined prestressing force
Anchor cable includes guiding cap 1, steel strand wires 6, tensioner ring 2, lock ring ring 3, Grouting Pipe 4 and sleeve 5, and sleeve 5 is multiple anchor cable in side slope
The category routine such as the structure of shearing resistance effect, guiding cap 1, steel strand wires 6, tensioner ring 2, lock ring ring 3 and Grouting Pipe 4 is played in Rock And Soil in advance should
The component of power anchor cable.Guiding cap 1 is arranged on the anchoring section end of the anchor cable, is the free segment of the anchor cable, sleeve 5 after lock ring ring 3
Positioned at free segment, sleeve 5 is fixed by sleeve fixing bolt 8, and steel strand wires 6 run through whole anchor cable, and the outer steel strand wires that set of steel strand wires 6 are prevented
Sheath 7, Grouting Pipe 4 is located at whole anchor cable center, and the outside of multiply steel strand wires 6 sets lock ring ring 3, whole anchor cable and slip casting lithosome
Tensioner ring 2 is set between 10, and anchor cable is placed in drilling 9.
To effectively improve the shear behavior and slope stability of prestress anchorage cable, determine that gliding mass is slided first before slope construction
Face or the position using method for numerical simulation calculating side slope potential water use, so that it is determined that the peace of combined prestressing force anchor cable middle sleeve
Holding position.Combined prestressing force anchor cable is assembled according to acquired results, sleeve axial centre is overlapped with potential water use position, lifted
Anchor structure in sliding surface or the shear behavior of potential position of slip surface so that slope stability state be improved significantly.In reality
Consolidation process is carried out to certain side slope in the embodiment of border, its workflow using one kind that the present invention is provided as shown in fig. 7, can be lifted
The combined prestressing force anchorage cable engineering application of anchor structure shear behavior is illustrated, as shown in Figure 8.
Specific construction flow is as follows：
(1) site contour and geologic prospect；
(2) for slip mass, the position of slip surface of gliding mass can be determined using exploration mode；Engineering is punished for side slope, can be adopted
With numerical simulation or other computational methods, the potential slide surface position of side slope is determined；
(3) drilling and forming hole；
(4) conventional prestress anchorage cable component is processed；
(5) according to sliding surface or potential position of slip surface installation sleeve, sleeve axial centre be closely located to potential slide surface or
Overlap；
(6) duct and cable body are checked before installing, one-time-reach-place when installing anchor cable is carried out temporarily after installation to exposing steel strand wires
Protection；
(7) anchor pier, anchorage cable anchoring section slip casting are made；
(8) tensioning is carried out to anchor cable by anchor Design result；
(9) free section of anchor cable slip casting.
The present embodiment is only that the present invention provides a kind of specific implementation form, wherein exploration, slide surface positioning, pore-forming, anchor pier
Make, anchor cable makes, sleeve make installed with assembling, anchor cable, anchorage cable stretching and slip casting etc. is according to specific geological conditions, numerical value
Depending on the condition such as simulation calculating and national standard, the present invention is not particularly limited.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (6)
1. it is a kind of lifted anchor structure shear behavior combined prestressing force anchor cable, it is characterised in that：Including guiding cap (1), expansion
Ring (2), lock ring ring (3), Grouting Pipe (4), sleeve (5) and steel strand wires (6), guiding cap (1) are arranged on the anchoring section end of the anchor cable
Portion, is the free segment of the anchor cable after anchoring section, and, positioned at free segment, sleeve (5) is fixed by sleeve fixing bolt (8), steel for sleeve (5)
Through whole anchor cable, steel strand wires (6) set outward steel strand wires overcoat (7) to twisted wire (6), Grouting Pipe (4) positioned at whole anchor cable center,
Lock ring ring (3) is set outside multiply steel strand wires (6), tensioner ring (2), anchor cable are set between whole anchor cable and slip casting lithosome (10)
It is placed in drilling (9).
2. it is according to claim 1 lifting anchor structure shear behavior combined prestressing force anchor cable, it is characterised in that：It is described
Multiply steel strand wires (6) for three strands and more than.
3. it is according to claim 1 lifting anchor structure shear behavior combined prestressing force anchor cable, it is characterised in that：It is described
Sleeve (5) is pure steel design, reinforcement cage structure or reinforced concrete structure.
4. it is according to claim 1 lifting anchor structure shear behavior combined prestressing force anchor cable, it is characterised in that：It is described
Sleeve (5) two ends are provided with stud, and steel strand wires (6) are fixed on expansion through sleeve (5), sleeve (5) by end bolt structure
On ring (2).
5. it is according to claim 1 lifting anchor structure shear behavior combined prestressing force anchor cable, it is characterised in that：It is described
Sleeve (5) length is not less than 5m, and when free section of anchor cable entire length is less than 5m, sleeve (5) length is identical with freedom length,
Sleeve (5) wall thickness is not less than 5mm.
6. it is according to claim 1 lifting anchor structure shear behavior combined prestressing force anchor cable, it is characterised in that：It is described
The single application of sleeve (5) or more than one combined type application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243380.5A CN106917407A (en) | 2017-04-14 | 2017-04-14 | A kind of combined prestressing force anchor cable for lifting anchor structure shear behavior |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243380.5A CN106917407A (en) | 2017-04-14 | 2017-04-14 | A kind of combined prestressing force anchor cable for lifting anchor structure shear behavior |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106917407A true CN106917407A (en) | 2017-07-04 |
Family
ID=59566998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710243380.5A Withdrawn CN106917407A (en) | 2017-04-14 | 2017-04-14 | A kind of combined prestressing force anchor cable for lifting anchor structure shear behavior |
Country Status (1)
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| CN (1) | CN106917407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485919A (en) * | 2020-06-28 | 2020-08-04 | 中国矿业大学(北京) | Anti-shearing lock of tunnel advanced support guide pipe, grouting guide pipe and construction method |
| CN117345309A (en) * | 2023-12-05 | 2024-01-05 | 矿冶科技集团有限公司 | Shear-resistant prestress anchor cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE905913A (en) * | 1986-12-12 | 1987-04-01 | Hydro Soil Services Nv | Anchoring thick retaining wall, by cable or rod - involves drilling bore through wall, inserting anchoring tube to take up cable or rod tension, and cementing tube in bore |
| CN201459721U (en) * | 2009-06-05 | 2010-05-12 | 中交第一公路工程局有限公司 | Split crack slurry filling prestress anchor wire device |
| CN202144593U (en) * | 2011-07-04 | 2012-02-15 | 北京鑫实路桥建设有限公司 | Bundling prestressing steel strand anchor cable for strengthening road rock slope |
| CN205576912U (en) * | 2016-04-28 | 2016-09-14 | 成永刚 | Anchor rope shears |
| CN205576907U (en) * | 2016-03-08 | 2016-09-14 | 张淑珍 | Anchor rope structure for side slope support retaining wall |
| CN205917695U (en) * | 2016-08-22 | 2017-02-01 | 中铁西北科学研究院有限公司深圳南方分院 | Anchor rope |
-
2017
- 2017-04-14 CN CN201710243380.5A patent/CN106917407A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE905913A (en) * | 1986-12-12 | 1987-04-01 | Hydro Soil Services Nv | Anchoring thick retaining wall, by cable or rod - involves drilling bore through wall, inserting anchoring tube to take up cable or rod tension, and cementing tube in bore |
| CN201459721U (en) * | 2009-06-05 | 2010-05-12 | 中交第一公路工程局有限公司 | Split crack slurry filling prestress anchor wire device |
| CN202144593U (en) * | 2011-07-04 | 2012-02-15 | 北京鑫实路桥建设有限公司 | Bundling prestressing steel strand anchor cable for strengthening road rock slope |
| CN205576907U (en) * | 2016-03-08 | 2016-09-14 | 张淑珍 | Anchor rope structure for side slope support retaining wall |
| CN205576912U (en) * | 2016-04-28 | 2016-09-14 | 成永刚 | Anchor rope shears |
| CN205917695U (en) * | 2016-08-22 | 2017-02-01 | 中铁西北科学研究院有限公司深圳南方分院 | Anchor rope |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485919A (en) * | 2020-06-28 | 2020-08-04 | 中国矿业大学(北京) | Anti-shearing lock of tunnel advanced support guide pipe, grouting guide pipe and construction method |
| CN111485919B (en) * | 2020-06-28 | 2020-09-11 | 中国矿业大学(北京) | Anti-shearing lock of tunnel advanced support guide pipe, grouting guide pipe and construction method |
| CN117345309A (en) * | 2023-12-05 | 2024-01-05 | 矿冶科技集团有限公司 | Shear-resistant prestress anchor cable |
| CN117345309B (en) * | 2023-12-05 | 2024-02-20 | 矿冶科技集团有限公司 | Shear-resistant prestress anchor cable |
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| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170704 |
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| WW01 | Invention patent application withdrawn after publication |