CN1141461C - Method for anchor bolt construction by double sleeve - Google Patents
Method for anchor bolt construction by double sleeve Download PDFInfo
- Publication number
- CN1141461C CN1141461C CNB021308357A CN02130835A CN1141461C CN 1141461 C CN1141461 C CN 1141461C CN B021308357 A CNB021308357 A CN B021308357A CN 02130835 A CN02130835 A CN 02130835A CN 1141461 C CN1141461 C CN 1141461C
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- Prior art keywords
- anchor rod
- diameter
- pipe
- anchor pole
- outer tube
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Abstract
The present invention relates to a method for carrying out anchor rod construction by using a double sleeve method, which belongs to the technical field of foundation and foundation engineering. The method firstly uses a drilling head of which the diameter is larger than designed diameter of an anchor rod for impacting and drilling a large hole, an external tube of which the external diameter is not more than the hole diameter of the large hole, and the inner diameter is larger than the designed hole diameter of the anchor rod is impacted into the large hole, the top of the external tube is higher than the ground level, and the external tube is fixed with fixing ribs; a drilling machine is used for downward drilling an anchor rod hole according to the designed diameter of the anchor rod through the external tube; an internal tube is arranged in the hole, and the upper end of the internal tube is fixed to the external tube by a fixing bracket; an anchor rod rib is inserted into the internal tube, cement mortar is injected, the internal tube and the external tube are drawn out to form an anchor rod. The method of the present invention solves the problem that the hole formation of the anchor rod construction in a crushed stone layer can not be carried out easily; when the present invention is used for solving anti-floating problem of a building, a reinforced concrete anti-floating pile of a large aperture is not used, and an anti-floating anchor rod is used; thereby, the construction period is shortened, the manufacturing cost is reduced, and the construction safety is improved. The method can also be used for the construction of the foundation pit support anchor rod in the crushed stone layer.
Description
Technical field
The present invention relates to a kind of method, belong to ground and Foundation Design technical field, the job practices of particularly a kind of anti-float anchor rod and pattern foundation pit supporting structure anchor pole with anchor bolt construction by double sleeve.
Background technology
The job practices of anti-float anchor rod and pattern foundation pit supporting structure anchor pole is all to hole to projected depth by anchor pole design aperture at present, lays anchor pole muscle, perfusion mortar then, forms anchor pole.But as running into macadam, then be difficult to pore-forming even can't construct during anchor pole pore-creating.Therefore, on the rubble stratum, underground building anti-floating problem adopts large aperture steel concrete anti-floating stake usually; Pattern foundation pit supporting structure then adopts the castinplace pile supporting that the stake footpath is big, spacing is little, quantity of reinforcement is big.There is cost height, long in time limit in said method, shortcoming such as poor stability during construction.
Summary of the invention
The objective of the invention is, overcome anchor pole in the prior art is difficult to pore-forming in macadam shortcoming, propose a kind of method, guarantee that anchor pole can construct in macadam, to reduce construction costs, reduction of erection time with anchor bolt construction by double sleeve.
The method with anchor bolt construction by double sleeve that the present invention proposes comprises following each step:
A, use drill bit impact drilling and forming hole greater than the anchor pole intended diameter;
B, external diameter is less than or equal to above-mentioned aperture, internal diameter is driven in the above-mentioned hole greater than the outer tube in anchor pole design aperture, outer steel pipe top 10～20cm above ground level fixes steel pipe with fixing muscle;
C, bore bolthole downwards to projected depth by anchor pole design aperture by outer tube with rig;
D, put into pipe in above-mentioned bolthole, diameter of inner pipe designs the aperture less than anchor pole, and insertion depth is deeper than macadam, and the upper end of interior pipe is fixed on the outer tube with fixed support;
E, in interior pipe, insert the anchor pole muscle, and the cement injection mortar, pipe and outer tube in extracting form anchor pole.
Outer tube in the said method is a steel pipe, and interior pipe is pvc pipe or book steel pipe.
The method with anchor bolt construction by double sleeve that the present invention proposes has solved anchor bolt construction is difficult to pore-forming in macadam problem.When being used to solve building anti-floating problem, without large aperture steel concrete anti-floating stake, and adopt anti-float anchor rod, thereby the reduction of erection time is reduced cost, the raising working security.This method also can be used for the construction of pattern foundation pit supporting structure anchor pole in macadam.
Description of drawings
Fig. 1 is a construction schematic diagram of the present invention.
Among Fig. 1, the 1st, macropore, the 2nd, outer tube, the 3rd, fixing outer effective fixedly muscle, the 4th, bolthole, the 5th, interior pipe, the 6th, fixing interior effective support, the 7th, anchor pole muscle, the 8th, cement mortar.
The specific embodiment
The construction schematic diagram of the inventive method as shown in Figure 1, at first use greater than the drill bit impact of anchor pole intended diameter and creep into into macropore to certain depth, external diameter is driven in the macropore 1 greater than the outer tube 2 in anchor pole design aperture smaller or equal to above-mentioned big bore dia, internal diameter, the top of outer tube 2 10～20cm above ground level fixes outer tube with fixing muscle 3 then; Press anchor pole design aperture with rig and bore bolthole 4 downwards to projected depth by outer tube 3, in above-mentioned bolthole 4, put into pipe 5, diameter of inner pipe is slightly less than anchor pole design aperture, and insertion depth slightly is deeper than macadam, and the upper end of interior pipe is fixed on the outer tube 2 with fixed support 6; In interior pipe 5, insert anchor pole muscle 7, and cement injection mortar 8, pipe 5 and outer tube 2 in extracting form anchor pole.
Below in conjunction with description of drawings one embodiment of the present of invention: geological conditions is a macadam for top 3.0m in this anti-float anchor rod boundary of works area, is severely-weathered slate below, and the anchor pole design length is 10m, and the aperture is ф 130.During anchor bolt construction, at first the rig diameter is the drill bit impact boring 1 of ф 150, dark 500mm is driven into steel pipe 2 in the hole 1 steel pipe 3 long 700mm, external diameter 150mm, internal diameter 144mm, at its 2 long 200mm of level welding on the upper end 180mm place outer wall, angle is that 180 ° diameter is a fixedly muscle 3 of Ф 25, steel pipe 2 is exceeded about macropore 1 outer 200mm, prevent that the aperture from caving in.Rig is pressed the anchor pole intended diameter and is bored bolthole 4 downwards to projected depth 10m by steel pipe 2 then.Inserting external diameter in hole 4 is the pvc pipe 5 of ф 120, and insertion depth should slightly be deeper than macadam, pvc pipe end suitable for reading tube wall horizontal aspect punching, insert the bar dowel of 2 Ф 16, form support 6, pvc pipe is fixed on the outer tube 2, prevent broken layer hole wall collapse.Insert 2 Ф, 28 anchor pole muscle 7 by interior pipe 5, cement injection mortar 8, pipe 5 and outer tube 2 in extracting at last form anchor pole.
Claims (3)
1, a kind of method with anchor bolt construction by double sleeve is characterized in that this method comprises following each step:
A, use drill bit impact drilling and forming hole greater than the anchor pole intended diameter;
B, external diameter is driven in the above-mentioned hole greater than the outer tube in anchor pole design aperture smaller or equal to the aperture in above-mentioned hole, internal diameter, outer tube top 10～20cm above ground level fixes steel pipe with fixing muscle;
C, bore bolthole downwards to projected depth by anchor pole design aperture by outer tube with rig;
D puts into pipe in above-mentioned mesopore, diameter of inner pipe designs the aperture less than anchor pole, and insertion depth is deeper than macadam, and the upper end of interior pipe is fixed on the outer tube with fixed support;
E, in interior pipe, insert the anchor pole muscle, and the cement injection mortar, pipe and outer tube in extracting form anchor pole.
2, the method for claim 1 is characterized in that described outer tube is a steel pipe.
3, the method for claim 1 is characterized in that described interior pipe is pvc pipe or book steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021308357A CN1141461C (en) | 2002-10-11 | 2002-10-11 | Method for anchor bolt construction by double sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021308357A CN1141461C (en) | 2002-10-11 | 2002-10-11 | Method for anchor bolt construction by double sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401858A CN1401858A (en) | 2003-03-12 |
| CN1141461C true CN1141461C (en) | 2004-03-10 |
Family
ID=4746476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021308357A Expired - Lifetime CN1141461C (en) | 2002-10-11 | 2002-10-11 | Method for anchor bolt construction by double sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1141461C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677658A (en) * | 2012-04-25 | 2012-09-19 | 北京市三一重机有限公司 | Pile construction method and pile casings |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003193B (en) * | 2010-09-15 | 2012-07-04 | 煤炭科学研究总院太原研究院 | Hydraulic airborne water and wind-driven drilling and anchoring device |
| CN102080377B (en) * | 2010-12-13 | 2012-07-11 | 张继红 | Composite anchor rod and guide construction method thereof |
| CN102182180B (en) * | 2011-04-01 | 2012-06-27 | 邢占东 | Rotary extrusion sleeve anchor rod and construction method thereof |
| CN102296655B (en) * | 2011-06-21 | 2013-08-07 | 北京航空航天大学 | Cylindrical extruding and expanding device for extruding and expanding for pore-forming in stratum |
| CN103031847B (en) * | 2012-12-20 | 2015-05-06 | 长江勘测规划设计研究有限责任公司 | Reducing overlap joint combined type orifice pipe grouting method |
| CN103233475A (en) * | 2013-05-08 | 2013-08-07 | 周正海 | Column structure and foundation pit supporting system comprising same |
| CN103603379A (en) * | 2013-12-03 | 2014-02-26 | 葛建 | Anti-floating system combining anti-floating cement soil pile and anti-floating anchor rod and construction process of anti-floating system |
| CN106556482B (en) * | 2016-11-16 | 2017-10-10 | 中南大学 | One kind, which hangs up face, can uphold anchor stress automonitor |
| CN108589724A (en) * | 2018-04-26 | 2018-09-28 | 青岛新华友建工集团股份有限公司 | Steel pipe and pvc pipe composite bushing sandy ground matter pore-forming anti-float anchor rod construction |
-
2002
- 2002-10-11 CN CNB021308357A patent/CN1141461C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677658A (en) * | 2012-04-25 | 2012-09-19 | 北京市三一重机有限公司 | Pile construction method and pile casings |
| CN102677658B (en) * | 2012-04-25 | 2015-10-28 | 北京市三一重机有限公司 | hole pile construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1401858A (en) | 2003-03-12 |
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Legal Events
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040310 |