CN108360514A - A kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing and its application method - Google Patents
A kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing and its application method Download PDFInfo
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- CN108360514A CN108360514A CN201810336428.1A CN201810336428A CN108360514A CN 108360514 A CN108360514 A CN 108360514A CN 201810336428 A CN201810336428 A CN 201810336428A CN 108360514 A CN108360514 A CN 108360514A
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- dish
- enlarged footing
- rotary squeezing
- anchor pole
- shaped enlarged
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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
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention proposes a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing and its application method.The present invention is made of anchor pole main shaft, dish-shaped enlarged footing sleeve, extruding plastic cement expansion tube and rotary squeezing outer sleeve.Anchor pole main shaft is set to after precalculated position, it is inserted in dish-shaped enlarged footing sleeve, with rotary squeezing outer sleeve by dish-shaped enlarged footing sleeve impact expand come, form widened anchored end, anchor pole main shaft is fixed in the soil body or rock mass, resistance to plucking anchor force is formed, then is locked the dish-shaped enlarged footing sleeve after expansion with plastic cement expansion tube is squeezed, prevents anchoring from relaxing.The present invention reinforces the connection between the soil body using physical method, enhances the skid resistance of side slope, avoids the soil body caused by being excavated due to excavation slope from the accidents such as sliding, cave in, improves the stability of foundation pit.Construction efficiency is improved, injecting paste material has been saved.The present invention can be used for Support of Foundation Pit Excavation engineering, improve the security and stability of excavation slope.Apparatus of the present invention instrumentation is easy, and construction efficiency is high.
Description
Technical field
The present invention relates to a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing and its application methods.The present invention is by anchor pole
Main shaft, squeezes plastic cement expansion tube and rotary squeezing outer sleeve composition at dish-shaped enlarged footing sleeve.Anchor pole main shaft is set into pre-determined bit
It postpones, is inserted in dish-shaped enlarged footing sleeve, expanded the impact of dish-shaped enlarged footing sleeve to be formed and be expanded with rotary squeezing outer sleeve
Anchored end, anchor pole main shaft is fixed in the soil body or rock mass, formed resistance to plucking anchor force, then with squeeze plastic cement expansion tube will expansion
Dish-shaped enlarged footing sleeve locking afterwards, prevents anchoring from relaxing, enhances the skid resistance of side slope, avoids making due to excavation slope excavation
At the soil body accidents such as slide, cave in, improve the stability of foundation pit.The present invention is directed to Support of Foundation Pit Excavation engineering, improves
Traditional slip casting anchoring process, substantially increases construction efficiency, has saved injecting paste material.The invention belongs to geotechnical engineering and environment
The correlative technology fields such as engineering.
Background technology
With the development of the city, urban land is more and more rare, increasingly increases the utilization of urban underground space.Develop city
In the method for city's underground space, trenchless engineering technology requires height, and cost is also high, and therefore, excavation of foundation pit is current exploitation underground
The more commonly used method in space.However the soil mass property in many areas is poor, to the difficulty that construction is brought, the side of excavation of foundation pit
Slope stable problem seems particularly significant.Support of Foundation Pit Excavation is various informative, as slope excavate, outer drawings anchor cooperation lagging pile excavation,
Diaphram wall adds anchor pole, slope protection pile to add anchor pole, mixing pile supporting and reverse construction etc..Wherein, anchor tube supporting, which has, occupies
The advantages that place is small, construction space is big, speed of application is fast in foundation pit, thus be widely used in Support of Foundation Pit Excavation engineering.
The anchorage style of anchor tube supporting is generally slip casting anchoring, and slip casting anchoring is there are two difficult points, first, the full degree of slip casting cannot
Reliably ensured, second is that slip casting solidification plays a role and needs a period of time, cannot act as reinforcing in time.In order to solve the two
Problem, the present invention propose a kind of new anchor rod anchored method, are anchored using widened method is squeezed.
Invention content
It is an object of the invention to propose a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing and its application method.It will
Anchor pole main shaft is set to after precalculated position, is inserted in dish-shaped enlarged footing sleeve, with rotary squeezing outer sleeve by dish-shaped enlarged footing sleeve
Impact, which expands, to be come, and forms widened anchored end, anchor pole main shaft is fixed in the soil body or rock mass, forms resistance to plucking anchor force, then
The dish-shaped enlarged footing sleeve after expansion is locked with plastic cement expansion tube is squeezed, prevents anchoring from relaxing, enhances the skid resistance of side slope,
It avoids the soil body caused by being excavated due to excavation slope from the accidents such as sliding, cave in, improves the stability of foundation pit.It is primarily adapted for use in base
Cheat excavation supporting engineering.
The solution of the present invention
The present invention proposes a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing, and overall structure includes 4 parts：1)
3) anchor pole main shaft, 2) dish-shaped enlarged footing sleeve squeeze plastic cement expansion tube, 4) rotary squeezing outer sleeve.
Wherein 1) anchor pole main shaft is the rod-shaped rod piece of filled circles, and end diameter is slightly larger than rear portion, in dish-shaped enlarged footing sleeve
Position has screw thread to be used for assembling rotary squeezing outer sleeve；
Wherein 2) dish-shaped enlarged footing sleeve is that the metallic cylinder for cutting seam is axially opened on surface, and portion's inner wall is provided with one within the barrel
Circular trough is enclosed, expansion is squeezed out outward from round groove portion in the case where dish-shaped enlarged footing sleeve both ends are squeezed, forms roudnel
Shape enlarged footing is inserted into the soil body or rock mass of surrounding, forms anchor force；
It is flexible yielding plastic pipe wherein 3) to squeeze plastic cement expansion tube, is sleeved on after the completion of the anchoring of dish-shaped enlarged footing sleeve
On anchor pole main shaft, with bolthole is sealed after rotary squeezing outer sleeve crimp, prevent anchor force from relaxing；
Wherein 4) rotary squeezing outer sleeve is metallic cylinder structure, is sleeved on outside anchor pole main shaft, and rotary squeezing dish expands
Headgear cylinder, and after forming dish-shaped enlarged footing, rotary squeezing plastic cement expansion tube have precession screw thread inside rotary squeezing outer sleeve.
The application method of the double-layer nested dish-shaped enlarged footing anchor pole of a kind of rotary squeezing as previously described：
1), excavation pit, smooth construction site need the place for setting anchor tube to measure positioning, mark in foundation pit
Drill position；
2), before bore operation, the angle of drilling machine is adjusted, the place marked with roof-bolter drills, and starts drilling machine,
Until drilling arrives predetermined depth；
3) borehole cleaning is carried out after, drilling, anchor pole main shaft is set to precalculated position；
4) dish-shaped enlarged footing sleeve, is pushed into anchorage point with rotary squeezing outer sleeve, by dish-shaped enlarged footing sleeve to
Outer extrusion expands；
5) rotary squeezing outer sleeve, is extracted, plastic cement expansion tube will be squeezed and be sent into the thread segment of anchor pole main shaft, and rotated and squeeze
Pressure so that squeeze plastic cement expansion tube and be in close contact with dish-shaped enlarged footing sleeve；
6) rotary squeezing outer sleeve, is extracted, the anchoring construction of an anchor pole is completed.
Advantages of the present invention
A kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing proposed by the present invention and its application method.By anchor pole main shaft
It sets to after precalculated position, is inserted in dish-shaped enlarged footing sleeve, dish-shaped enlarged footing sleeve is impacted with rotary squeezing outer sleeve and is expanded
It comes, forms widened anchored end, anchor pole main shaft is fixed in the soil body or rock mass, form resistance to plucking anchor force, then moulded with squeezing
Glue expansion tube by after expansion dish-shaped enlarged footing sleeve lock, prevent anchoring relax, enhance the skid resistance of side slope, avoid due to
The soil body caused by excavation slope excavates such as slides, caves at the accidents, improves the stability of foundation pit.The present invention is easy to operate, construction
It is efficient, there is good benefit.
Description of the drawings
Attached drawing 1 is anchor pole main shaft schematic diagram
Attached drawing 2 is dish-shaped enlarged footing sleeve schematic diagram
Attached drawing 3 is the schematic diagram after dish-shaped enlarged footing sleeve expansion
Attached drawing 4 is to squeeze plastic cement expansion tube schematic diagram
Attached drawing 5 is rotary squeezing outer sleeve schematic diagram
In figure：1) anchor pole main shaft, 2) screw thread, 3) dish-shaped enlarged footing sleeve, 4) squeeze plastic cement expansion tube, 5) outside rotary squeezing
Sleeve.
Specific implementation mode：
The present invention proposes a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing, and overall structure includes 4 parts：Anchor
Bar main shaft, squeezes plastic cement expansion tube, rotary squeezing outer sleeve at dish-shaped enlarged footing sleeve.
Anchor pole main shaft 1 in structure) it is the rod-shaped rod piece of filled circles, end diameter is slightly larger than rear portion, expands headgear in dish
, there is screw thread 2 at the position of cylinder 3)) it is used for assembling rotary squeezing outer sleeve；
Dish-shaped enlarged footing sleeve 3 in structure) it is the metallic cylinder that cutting seam is axially opened on surface, portion's inner wall is opened within the barrel
Having a circle circular trough, in dish-shaped enlarged footing sleeve 3) both ends squeeze out expansion, shape in the case of be squeezed outward from round groove portion
It at disc enlarged footing, is inserted into the soil body or rock mass of surrounding, forms anchor force；
Extruding plastic cement expansion tube 4 in structure) it is flexible yielding plastic pipe, in dish-shaped enlarged footing sleeve 3) anchoring completion
Rear enclosure is in anchor pole main shaft 1) on, with rotary squeezing outer sleeve 5) bolthole is sealed after crimp, prevent anchor force from relaxing；
Rotary squeezing outer sleeve 5 in structure) it is metallic cylinder structure, it is sleeved on anchor pole main shaft 1) and outside, rotary squeezing dish
Shape enlarged footing sleeve 3), and after forming dish-shaped enlarged footing, rotary squeezing plastic cement expansion tube 4), rotary squeezing outer sleeve 5) it is internal
There is precession screw thread；
The application method of the double-layer nested dish-shaped enlarged footing anchor pole of a kind of rotary squeezing as previously described：
1), excavation pit, smooth construction site need the place for setting anchor tube to measure positioning, mark in foundation pit
Drill position；
2), before bore operation, the angle of drilling machine is adjusted, the place marked with roof-bolter drills, and starts drilling machine,
Until drilling arrives predetermined depth；
3) borehole cleaning is carried out after, drilling, by anchor pole main shaft 1) it sets to precalculated position；
4), by dish-shaped enlarged footing sleeve 3) with rotary squeezing outer sleeve 5) anchorage point is pushed into, dish is expanded into headgear
3) cylinder squeezes out outward expands；
5), extract rotary squeezing outer sleeve 5), plastic cement expansion tube 4 will be squeezed) be sent into anchor pole main shaft 1) and screw thread 2) section, and
Rotary squeezing so that squeeze plastic cement expansion tube 4) and dish-shaped enlarged footing sleeve 3) be in close contact；
6) rotary squeezing outer sleeve 5, is extracted), complete the anchoring construction of an anchor pole.
Claims (2)
1. a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing, overall structure includes 4 parts：1) anchor pole main shaft, 2)
3) dish-shaped enlarged footing sleeve squeezes plastic cement expansion tube, 4) rotary squeezing outer sleeve, it is characterized in that：
1), the anchor pole main shaft is the rod-shaped rod piece of filled circles, and end diameter is slightly larger than rear portion, in the portion of dish-shaped enlarged footing sleeve
Position has screw thread to be used for assembling rotary squeezing outer sleeve；
2), the dish-shaped enlarged footing sleeve is the metallic cylinder that cutting seam is axially opened on surface, and portion's inner wall is provided with one within the barrel
Enclose circular trough；
3), the extruding plastic cement expansion tube is flexible yielding plastic pipe, is sleeved on after the completion of the anchoring of dish-shaped enlarged footing sleeve
On anchor pole main shaft, with bolthole is sealed after rotary squeezing outer sleeve crimp, prevent anchor force from relaxing；
4), the rotary squeezing outer sleeve is metallic cylinder structure, is sleeved on outside anchor pole main shaft, rotary squeezing dish enlarged footing
Sleeve, and after forming dish-shaped enlarged footing, rotary squeezing plastic cement expansion tube have precession screw thread inside rotary squeezing outer sleeve.
2. the application method based on a kind of double-layer nested dish-shaped enlarged footing anchor pole of rotary squeezing described in claim 1：
1), excavation pit, smooth construction site need the place for setting anchor tube to measure positioning, mark drilling in foundation pit
Position；
2), before bore operation, the angle of drilling machine is adjusted, the place marked with roof-bolter drills, and starts drilling machine, until
Creep into predetermined depth；
3) borehole cleaning is carried out after, drilling, anchor pole main shaft is set to precalculated position；
4) dish-shaped enlarged footing sleeve, is pushed into anchorage point with rotary squeezing outer sleeve, dish-shaped enlarged footing sleeve is squeezed outward
Go out to expand；
5) rotary squeezing outer sleeve, is extracted, the thread segment of plastic cement expansion tube feeding anchor pole main shaft, and rotary squeezing will be squeezed, made
Plastic cement expansion tube must be squeezed to be in close contact with dish-shaped enlarged footing sleeve；
6) rotary squeezing outer sleeve, is extracted, the anchoring construction of an anchor pole is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336428.1A CN108360514B (en) | 2018-04-12 | 2018-04-12 | Rotary extrusion double-layer nested dish-shaped enlarged footing anchor rod and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336428.1A CN108360514B (en) | 2018-04-12 | 2018-04-12 | Rotary extrusion double-layer nested dish-shaped enlarged footing anchor rod and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108360514A true CN108360514A (en) | 2018-08-03 |
| CN108360514B CN108360514B (en) | 2020-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810336428.1A Active CN108360514B (en) | 2018-04-12 | 2018-04-12 | Rotary extrusion double-layer nested dish-shaped enlarged footing anchor rod and use method thereof |
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| CN (1) | CN108360514B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057840A (en) * | 2018-08-20 | 2018-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Adaptive grouting and reinforcing anchor pole and its anchoring construction method under a kind of high stress |
| CN109083668A (en) * | 2018-08-20 | 2018-12-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting |
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| CN102322061A (en) * | 2011-06-21 | 2012-01-18 | 北京航空航天大学 | Construction device and construction method of end support anchor rod based on extruding-extending pore forming |
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| CN106638655A (en) * | 2017-02-22 | 2017-05-10 | 北京健安诚岩土工程有限公司 | Conical-head tendon body post-tensioning pile foundation and construction process thereof |
| CN106760219A (en) * | 2017-02-23 | 2017-05-31 | 江苏景源万河环境科技有限公司 | A kind of reducing steel reinforcement cage and its enlarging anchor rod or pile foundation |
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Patent Citations (9)
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| JPH10266200A (en) * | 1997-03-28 | 1998-10-06 | Moriya Koki Kk | Preparation method of ground anchor, preparation method of lock bolt and these pressure-receiving structure |
| CN2763353Y (en) * | 2005-01-12 | 2006-03-08 | 张建山 | Repeatedly usable expansion type soil nailed wall |
| CN102322061A (en) * | 2011-06-21 | 2012-01-18 | 北京航空航天大学 | Construction device and construction method of end support anchor rod based on extruding-extending pore forming |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057840A (en) * | 2018-08-20 | 2018-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Adaptive grouting and reinforcing anchor pole and its anchoring construction method under a kind of high stress |
| CN109083668A (en) * | 2018-08-20 | 2018-12-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting |
| CN109057840B (en) * | 2018-08-20 | 2020-03-31 | 中钢集团马鞍山矿山研究院有限公司 | Self-adaptive grouting reinforcement anchor rod under high stress and anchoring construction method thereof |
| CN109083668B (en) * | 2018-08-20 | 2020-05-19 | 中钢集团马鞍山矿山研究院有限公司 | Be suitable for slip casting reinforcing stock of high stress broken country rock support usefulness |
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|---|---|
| CN108360514B (en) | 2020-07-07 |
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