CN105369804A - Aerated soil anchor - Google Patents
Aerated soil anchor Download PDFInfo
- Publication number
- CN105369804A CN105369804A CN201510663265.4A CN201510663265A CN105369804A CN 105369804 A CN105369804 A CN 105369804A CN 201510663265 A CN201510663265 A CN 201510663265A CN 105369804 A CN105369804 A CN 105369804A
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- CN
- China
- Prior art keywords
- outside plate
- plate
- capsule outside
- steel
- welded
- 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.)
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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
- 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)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an aerated soil anchor which comprises an anchoring head and a propelling tool. The anchoring head comprises a metal air bag and a bag outside plate. The metal air bag is located in the bag outside plate, and an arc-shaped thick steel plate is welded in the rear end of the bag outside plate. One steel strand enters the bag outside plate through one end of the arc-shaped thick steel plate, bypasses the arc-shaped surface of the arc-shaped thick steel plate and is guided out of the bag outside plate through the other end of the arc-shaped thick steel plate. The propelling tool comprises two pieces of square steel and a short drill rod, the two pieces of square steel are welded to the upper end of the short drill rod to form a deep-U-shaped clamping cavity, and the distance between the two pieces of square steel is larger than the thickness of the bag outside bag. The bag outside plate is clamped in the deep-U-shaped clamping cavity of the propelling tool, and the rear end of the bag outside bag abuts against the upper end of the short drill rod. The aerated soil anchor is simple in structure, the anchoring head is recycled after the air bag is deflated and subjected to pressure relief, and engineering cost is reduced. The superficial area of the bag outside plate can reach 2 to 3 square meters, the drawing force of the single soil anchor ranges from 300 KN to 500 KN, and high anchoring force is achieved.
Description
Technical field
The present invention relates to soil bolt anchoring field, particularly relate to the native anchor of a kind of inflation.
Background technology
Soil anchor is widely used in pit maintenance soil and slope treatment.Soil layer anchoring mostly is bored grouting and adds steel strand anchoring mode.Anchored force depends on the surface area of cement mortar anchoring body and the shearing force between anchoring body and the soil body.For increasing anchored force, usually take to increase anchoring body length or diameter, therefore soil layer anchor cable anchoring depth reaches 20 meters, or enlarged footing diameter reaches 0.8 meter, and cement injection mortar is after 5 to 7 days, could tension steel strand.
Existing native anchor anchoring section is stressed a common ground, place degree of depth earth pressue at rest is acted between cement mortar solidification body and the soil body, and frictional resistance between the two depends on normal pressure and cohesion, therefore increase normal pressure and just can increase frictional resistance, thus increase anchored force.According to the data that side pressure instrument records, the other soil body normal pressure in hole increases to close to Temporary Occlusion by earth pressue at rest, and the soil body is still in a safe condition, and 3 to 4 times of Temporary Occlusion normally earth pressue at rest, therefore increasing normal pressure causes frictional resistance to increase, and corresponding anchored force improves.
Summary of the invention
The object of the invention is exactly the defect in order to make up the lower problem of anchored force that existing native anchor anchorage head unit area provides, and provides a kind of inflation native anchor.
The present invention is achieved by the following technical solutions:
The native anchor of a kind of inflation, include anchorage head and driving tool, described anchorage head includes metal bellows and capsule outside plate, described metal bellows is welded by stainless sheet steel, also stainless steel tube is welded with at the side of metal bellows, described capsule outside plate is welded by two pieces of diamond plates, described metal bellows is positioned at the inside of capsule outside plate, the end of stainless steel tube is stretched out capsule outside plate and is connected with one-way cock, the front end of capsule outside plate is provided with integrally welded triangular plate, arc steel plate is connected at the rear end internal welding of capsule outside plate, the width of arc steel plate is identical with the width of capsule outside plate, steel strand are entered intralamellar part capsule from one end of arc steel plate, walk around the curved surfaces of arc steel plate and derive capsule outside plate from the other end of arc steel plate, described driving tool includes two square steel and short drill pipe, the upper end that two square steel are welded on short drill pipe is formed dark U-shaped folder chamber, distance between two square steel is a bit larger tham the thickness of capsule outside plate, and be clipped in by capsule outside plate in the dark U-shaped folder chamber of driving tool, the rear end of capsule outside plate heads on the upper end of short drill pipe.
The axis of the external surface of capsule outside plate is welded with multiple inverted U locator card, and two square steel are clipped in the outside of capsule outside plate and pass inverted U locator card.
Advantage of the present invention is:
1, stainless steel air bag changes shape by inflation, volume enlargement, expulsion bladder outside plate, the normal pressure acted between capsule outside plate and the soil body is brought up to close to Temporary Occlusion by earth pressue at rest, if disregard the cohesion between capsule outside plate and the soil body, corresponding native anchor anchored force improves 3 to 4 times.
2, adopt inflation anchor to increase unit area frictional resistance between capsule outside plate and the soil body, correspondingly decrease anchoring depth, thus reduce steel strand length, in addition without the need to cement injection mortar, reduce material consumption, therefore reduce anchoring expense.
3, directly head into anchorage head after pore-forming, inflation, tension steel strand, immediately the anchoring soil body, do not need to wait for cement injection mortar solidification 5 to 7 days post-tensioning steel strands, therefore stainless sheet steel airbag aeration anchor shortens the construction period.
4, after base pit engineering terminates, air in emptying air bag, reclaims anchorage head, realizes the green supporting of foundation ditch.
5, by the anchoring crown to bearing stratum, balloon length 2 meters of width 0.35 meter, the two-sided total surface area of anchorage head reaches 1.4 square metres, clay 5 meters of following Temporary Occlusion of the degree of depth get 400kPa, friction factor gets 0.4, and soil body shear strength reaches 160kPa, calculates to face the state pulling capacity of moulding and reach 244kN.
Accompanying drawing explanation
Fig. 1 is metal bellows structural representation of the present invention.
Fig. 2 is capsule outer panel structure schematic diagram of the present invention.
Fig. 3 is capsule outside plate internal construction schematic diagram of the present invention.
Fig. 4 is jacking tool construction figure of the present invention.
Fig. 5 is external structure of the present invention.
Fig. 6 is flow pore-forming tool structure chart.
Detailed description of the invention
As Fig. 1, 2, 3, 4, shown in 5, the native anchor of a kind of inflation, include anchorage head and driving tool, described anchorage head includes metal bellows 1 and capsule outside plate 4, described metal bellows 1 is welded by stainless sheet steel, stainless steel tube 2 is also welded with at the side of metal bellows 1, described capsule outside plate 4 is welded by two pieces of diamond plates, described metal bellows 1 is positioned at the inside of capsule outside plate 4, the end of stainless steel tube 2 is stretched out capsule outside plate 4 and is connected with one-way cock, the front end of capsule outside plate 4 is provided with integrally welded triangular plate, arc steel plate 6 is connected at the rear end internal welding of capsule outside plate 4, the width of arc steel plate 6 is identical with the width of capsule outside plate 4, steel strand 5 are entered capsule outside plate 4 from one end of arc steel plate 6 inner, walk around the curved surfaces of arc steel plate 6 and derive capsule outside plate 4 from the other end of arc steel plate 6, described driving tool includes two square steel 7 and short drill pipe 8, the upper end that two square steel 7 are welded on short drill pipe 8 is formed dark U-shaped folder chamber, distance between two square steel 7 is a bit larger tham the thickness of capsule outside plate 4, be clipped in by capsule outside plate 4 in the dark U-shaped folder chamber of driving tool, the rear end of capsule outside plate 4 heads on the upper end of short drill pipe 8.Short drill pipe 8 is connected with rig.
The axis of the external surface of capsule outside plate 4 is welded with multiple inverted U locator card 3, two square steel 7 be clipped in the outside of capsule outside plate 4 and pass inverted U locator card 3.
When soil strength is higher, first with the first pore-forming of flow pore-forming tool, as shown in Figure 6, flow pore-forming tool comprises soil compaction plate 9 and short drill pipe 10, and soil compaction plate 9 is front-thin-rear-thick triangularity thickness steel plate, and soil compaction plate 9 rear end welding short drill pipe 10, short drill pipe 10 is connected with rig.Jacking bar 10 is connected with borer drill rod, and soil compaction plate 9 is headed into soil layer by rig, by adding stacks, soil compaction plate 9 being pushed up design length, exits drilling rod.Short drill pipe 8 be connected with rig, anchorage head is headed into soil layer, anchorage head is headed into soil layer along pore-forming by rig, by adding stacks, by the anchoring crown to design length, exits drilling rod.Air bag 1 inflation, inflating pressure makes the outer soil body of capsule outside plate close to Temporary Occlusion, closes charge valve.Tension steel strand 5, the anchoring soil body.
When soil strength is lower, without the need to first pore-forming, rig drives jacking instrument directly anchorage head to be headed into soil layer.Square steel 7 is through the outer multiple inverted U-shaped locator card 3 of capsule outside plate 4, anchorage head is connected with jacking instrument, short drill pipe 8 is connected with rig, rig by anchorage head jacking soil layer, by adding stacks, by the anchoring crown to design length, exit drilling rod, air bag 1 inflation, pressurization makes the outer soil body of capsule outside plate close to Temporary Occlusion, stops pressurization.Tension steel strand 5, the anchoring soil body.
Air bag 1 is welded by thickness 3 millimeters of stainless sheet steels, air bag 1 length 2 meters, wide 0.35 meter, thickness 3 millimeters; Stainless steel tube 2 external diameter 8 millimeters be connected with air bag 1, wall thickness 2 millimeters; Capsule outside plate 4 is welded by the diamond plate of thickness 3 millimeters, and capsule outside plate 4 is long 2.4 meters, wide 0.35 meter; Arc 6 thickness 20 millimeters, is welded on capsule outside plate 4 latter end inner; Steel strand 5 diameter 15.2 millimeters; Anchorage head maximum gauge 26 millimeters; Jacking instrument short drill pipe diameter 85 millimeters, length 1 meter; Two square steel are welded in short drill pipe front end, square steel is of a size of long 2.5 meters wide 30 mm of thickness 20 millimeters, square steel spacing is greater than anchorage head maximum gauge; Capsule outside plate Wai Ge branch 3 inverted U-shaped limiting cards; 3 limiting cards worn by square steel; Long 1 rice diameter 85 millimeters of flow pore-forming tool short drill pipe; Soil compaction plate is at the bottom of isosceles triangle, latter end thickness thickness 30 millimeters, triangle 0.35 meter high 0.35 meter; Short drill pipe and borer drill rod screwed connection; Be inflated to the soil body close to facing the state of moulding, valve-off, tension steel strand 5, the anchoring soil body.
Claims (2)
1. the native anchor of inflation, it is characterized in that: include anchorage head and driving tool, described anchorage head includes metal bellows and capsule outside plate, described metal bellows is welded by stainless sheet steel, also stainless steel tube is welded with at the side of metal bellows, described capsule outside plate is welded by two pieces of diamond plates, described metal bellows is positioned at the inside of capsule outside plate, the end of stainless steel tube is stretched out capsule outside plate and is connected with one-way cock, the front end of capsule outside plate is provided with integrally welded triangular plate, arc steel plate is connected at the rear end internal welding of capsule outside plate, the width of arc steel plate is identical with the width of capsule outside plate, steel strand are entered intralamellar part capsule from one end of arc steel plate, walk around the curved surfaces of arc steel plate and derive capsule outside plate from the other end of arc steel plate, described driving tool includes two square steel and short drill pipe, the upper end that two square steel are welded on short drill pipe is formed dark U-shaped folder chamber, distance between two square steel is a bit larger tham the thickness of capsule outside plate, and be clipped in by capsule outside plate in the dark U-shaped folder chamber of driving tool, the rear end of capsule outside plate heads on the upper end of short drill pipe.
2. the native anchor of one inflation according to claim 1, is characterized in that: on the axis of the external surface of capsule outside plate, be welded with multiple inverted U locator card, and two square steel are clipped in the outside of capsule outside plate and pass inverted U locator card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663265.4A CN105369804B (en) | 2015-10-12 | 2015-10-12 | One kind inflates native anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663265.4A CN105369804B (en) | 2015-10-12 | 2015-10-12 | One kind inflates native anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105369804A true CN105369804A (en) | 2016-03-02 |
| CN105369804B CN105369804B (en) | 2017-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510663265.4A Expired - Fee Related CN105369804B (en) | 2015-10-12 | 2015-10-12 | One kind inflates native anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105369804B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059861A (en) * | 2017-06-02 | 2017-08-18 | 安徽理工大学 | It is a kind of into disc tool and with the native anchor of the polydisc prepared into disc tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101031692A (en) * | 2004-08-30 | 2007-09-05 | 底部基础公司 | Methods for providing piled foundations for constructions, piled foundations and balloon for providing entarged footing |
| CN201713814U (en) * | 2010-05-06 | 2011-01-19 | 葛洲坝集团第二工程有限公司 | Air bag type blocker |
| DE202014000924U1 (en) * | 2014-01-31 | 2014-05-12 | Knut Eichstädt | ground anchor |
| CN203924052U (en) * | 2014-04-18 | 2014-11-05 | 中南大学 | The air-sac inflated anchor pole of a kind of string |
-
2015
- 2015-10-12 CN CN201510663265.4A patent/CN105369804B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101031692A (en) * | 2004-08-30 | 2007-09-05 | 底部基础公司 | Methods for providing piled foundations for constructions, piled foundations and balloon for providing entarged footing |
| CN201713814U (en) * | 2010-05-06 | 2011-01-19 | 葛洲坝集团第二工程有限公司 | Air bag type blocker |
| DE202014000924U1 (en) * | 2014-01-31 | 2014-05-12 | Knut Eichstädt | ground anchor |
| CN203924052U (en) * | 2014-04-18 | 2014-11-05 | 中南大学 | The air-sac inflated anchor pole of a kind of string |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059861A (en) * | 2017-06-02 | 2017-08-18 | 安徽理工大学 | It is a kind of into disc tool and with the native anchor of the polydisc prepared into disc tool |
| CN107059861B (en) * | 2017-06-02 | 2023-09-29 | 安徽理工大学 | Disk forming tool and multi-disk soil anchor prepared by using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105369804B (en) | 2017-11-28 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 Termination date: 20181012 |
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| CF01 | Termination of patent right due to non-payment of annual fee |