CN205276268U - Dual cavity stock of pulling force decentralized self -drilling - Google Patents
Dual cavity stock of pulling force decentralized self -drilling Download PDFInfo
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- CN205276268U CN205276268U CN201521032001.0U CN201521032001U CN205276268U CN 205276268 U CN205276268 U CN 205276268U CN 201521032001 U CN201521032001 U CN 201521032001U CN 205276268 U CN205276268 U CN 205276268U
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- steel pipe
- threaded steel
- pulling force
- stock
- drilling
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Abstract
Dual cavity stock of pulling force decentralized self -drilling belongs to civil engineering construction technical field, mainly is applied to foundation ditch (side slope) and struts the engineering, and dual cavity stock of pulling force decentralized self -drilling is mainly for strutting the atress member in the system. Its characterized in that: outer threaded steel pipe (1) interpolation threaded steel pipe (2b) that enters, interior threaded steel pipe links closely with drill bit (6), and the part adoption no hole circle wall steel pipe (2a) of interior threaded steel pipe in outer threaded steel pipe (1) does not just have hole circle wall steel pipe (2a) overcoat sleeve pipe (3), interior threaded steel pipe outside the part outside threaded steel pipe (1) be equipped with inner tube out grouting holes (5), outer threaded steel pipe (1) is equipped with outer tube out grouting holes (4), outer tube nut (13) are through backing plate, waist rail and outer threaded steel pipe (1) mechanical connection, inner tube nut (14) are through backing plate, outer tube nut, waist rail and interior round wall steel pipe (2a) mechanical connection. The utility model discloses take all factors into consideration the application scope of ordinary stock atress characteristics and self -drilling stock, regard dual cavity threaded steel pipe as the atress member, adopt inside and outside tub of nut respectively to its stretch -draw locking that circulates to reach the mesh of dispersed stock pulling force, improvement bearing capacity.
Description
Technical field
The utility model belongs to engineering construction technology field, is mainly used in Ji Keng (side slope) support engineering, the stressed member that the dual hollow bolt of pulling force decentralized self-drilling type is mainly in support system.
Background technology
Anchor pole is a kind of stressed member common in foundation pit supporting system, have supporting capacity strong, can Shi Hanzhang to control the features such as Ji Keng (side slope) distortion. Common pulling force decentralized anchor pole mostly is the inlet hole length changing steel strand, and to reach the object of dispersion pulling force, but generally, common bolt needs manually to draw hole or mechanical hole building in advance, therefore bigger by construction geology condition limitations affect. As: miscellaneous fill layer cannot become hole, and pebble bed or water-bearing strata become hole more difficult; And conventional automatic anchor pole mostly is equal diameter screw thread steel pipe, the scope of application is relatively wide, but anchoring body head can produce the phenomenon that stress ratio is relatively concentrated, be unfavorable for rod body material and anchoring body by power. Therefore, studying a kind of applied widely, the stressed member that can carry out pulling force dispersion, the design and construction for foundation pit supporting system has important meaning, also can produce higher social benefit and economic benefit simultaneously.
Summary of the invention
For overcoming the problem that common bolt (as: miscellaneous fill, sandy gravel and water-bearing strata etc.) in some stratum becomes hole difficulty, the automatic anchor pole local body of rod and anchoring body relatively to concentrate by power. The utility model considers the scope of application of common bolt loading characteristic and automatic anchor pole, rely on automatic anchor pole construction technology, using dual cannulated threaded steel pipe as stressed member, inner and outer pipe nut is adopted respectively it to be carried out circulation stretch-draw locking, to reach dispersion axis force of anchor, to improve the object of bearing capacity.
The dual hollow bolt of pulling force decentralized self-drilling type, it is characterized in that: insertion inner thread steel pipe 2b in outside screw steel pipe 1, inner thread steel pipe and drill bit 6 link closely, inner thread steel pipe outside the part in screw thread steel pipe 1 adopt without hole circle wall steel pipe 2a, and without hole circle wall steel pipe 2a outer case sleeve 3; Inner thread steel pipe outside the part outside screw thread steel pipe 1 be provided with interior pipe slurry outlet 5, outside screw steel pipe 1 is provided with outer tube slurry outlet 4; Outer tube nut 13 is mechanically connected by backing plate, waist beam and outside screw steel pipe 1; Interior pipe nut 14 is mechanically connected by backing plate, outer tube nut, waist beam and inner round wall steel pipe 2a.
Further, sleeve pipe 3 suggestion plastic material.
Overall technical architecture of the present utility model: the scope of application considering common bolt loading characteristic and automatic anchor pole, rely on automatic anchor pole construction technology, using dual cannulated threaded steel pipe as stressed member, inner and outer pipe nut is adopted respectively it to be carried out circulation stretch-draw locking, to reach dispersion axis force of anchor, to improve the object of bearing capacity.
Gordian technique:
1, drill bit and Deformed Steel Bars pipe jointing part position adopt inside and outside two thread structure, are inside connected to outside screw steel pipe, can be external in again inner thread steel pipe. As shown in Fig. 2 a, 2b.
2, interior pipe non-anchored section position adopts without hole circle wall steel pipe, outer case sleeve so that it is isolates with outside screw pipe and injecting cement paste, forms independent stressed member.
3, anchor head position adopts outer nut and inner nut respectively to body of rod Shi Hanzhang, and carries out circulation stretch-draw locking. As shown in Fig. 3 a, 3b.
4, by inside and outside double screw steel pipe by power, axis force of anchor can effectively be disperseed, it is to increase bearing capacity.
Accompanying drawing explanation
The dual hollow bolt structural map of Fig. 1 pulling force decentralized self-drilling type.
Fig. 2 screw thread steel pipe and drill bit interface chart. Wherein scheming a is that outside screw pipe is connected with drill bit, and figure b is that rifled tube is connected with drill bit
Fig. 3 anchor head coupling device figure. Wherein scheming a is sectional view, and figure b is vertical planning drawing
1. pipe nut in pipe outside screw 10. drill bit internal thread 11. waist beam (channel-section steel) 12. backing plate 13. outer tube nut 14. in pipe slurry outlet 6. drill bit 7. outer tube internal thread 8. drill bit outside screw 9. in outside screw steel pipe 2a. inner round wall steel pipe 2b. inner thread steel pipe 3. sleeve pipe 4. outer tube slurry outlet 5.
Embodiment:
The utility model need to drive the cannulated threaded steel pipe of two kinds of different tube diameters to creep into the use of jumbolter, when after drilling to completion, in the body of rod, carry out pressure slip casting by the equipment such as rig, grouting pump again, make the screw thread steel pipe of two kinds of different tube diameters, injecting cement paste and the periphery soil body form stress system. Specific construction technique is as follows: the outside screw steel pipe 1 first creeping into band drill bit 6, after drilling to completion, insert inner thread steel pipe 2b again, inner thread steel pipe and drill bit 6 are linked closely, creep into successively inner thread steel pipe (interior pipe non-anchored section position adopt without hole circle wall steel pipe 2a, and outer case sleeve 3) to designing the degree of depth; And then by the equipment such as grouting pump, rig respectively externally threaded pipe, rifled tube carry out pressure slip casting, slurries, by outer, interior pipe slurry outlet ejection, form anchoring body with the periphery soil body; After last injecting cement paste reaches design strength, then by outer tube nut 13, interior pipe nut 14 and waist beam 11, backing plate 12, the body of rod is carried out circulation stretch-draw locking.
The useful effect reached:
1, compared with common bolt, the utility model can use in miscellaneous fill, sandy gravel and water-bearing strata, overcomes into the problem of hole difficulty.
2, the body of rod is adopted sectional type to creep into by the utility model, and compared with general automatic anchor pole, anchor pole length of can constructing is longer.
3, by inside and outside double screw steel pipe Shi Hanzhang respectively, can effectively disperse axis force of anchor, avoid anchor pole end to produce stress and concentrate and brittle rupture occurs.
4, the utility model is different along hole depth body of rod section area, can consider internal and external threads Guan Shouli size, choose reasonable caliber, save material to a certain extent, saves cost.
5, owing to the utility model can be constructed, anchor pole is longer, the body of rod is more reasonable by power, and therefore anchor pole tension strength in anchor is higher, applicable in darker foundation pit supporting project.
Claims (1)
1. the dual hollow bolt of pulling force decentralized self-drilling type, it is characterized in that: insertion inner thread steel pipe (2b) in outside screw steel pipe (1), inner thread steel pipe and drill bit (6) link closely, inner thread steel pipe outside the part in screw thread steel pipe (1) adopt without hole circle wall steel pipe (2a), and without hole circle wall steel pipe (2a) outer case sleeve (3); Inner thread steel pipe outside the outer part of screw thread steel pipe (1) be provided with interior pipe slurry outlet (5), outside screw steel pipe (1) is provided with outer tube slurry outlet (4); Outer tube nut (13) is mechanically connected by backing plate, waist beam and outside screw steel pipe (1); Interior pipe nut (14) is mechanically connected by backing plate, outer tube nut, waist beam and inner round wall steel pipe (2a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032001.0U CN205276268U (en) | 2015-12-12 | 2015-12-12 | Dual cavity stock of pulling force decentralized self -drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032001.0U CN205276268U (en) | 2015-12-12 | 2015-12-12 | Dual cavity stock of pulling force decentralized self -drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205276268U true CN205276268U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521032001.0U Active CN205276268U (en) | 2015-12-12 | 2015-12-12 | Dual cavity stock of pulling force decentralized self -drilling |
Country Status (1)
| Country | Link |
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| CN (1) | CN205276268U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556482A (en) * | 2016-11-16 | 2017-04-05 | 中南大学 | One kind is hung up face and can uphold anchor stress automonitor and its using method |
| CN109930598A (en) * | 2019-04-15 | 2019-06-25 | 陈林 | A kind of foundation pit fender pile and foundation pit baffle |
| CN113356198A (en) * | 2021-07-01 | 2021-09-07 | 青岛业高建设工程有限公司市北分公司 | Single-spliced channel steel anchor rod waist beam structure and using method thereof |
-
2015
- 2015-12-12 CN CN201521032001.0U patent/CN205276268U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556482A (en) * | 2016-11-16 | 2017-04-05 | 中南大学 | One kind is hung up face and can uphold anchor stress automonitor and its using method |
| CN109930598A (en) * | 2019-04-15 | 2019-06-25 | 陈林 | A kind of foundation pit fender pile and foundation pit baffle |
| CN113356198A (en) * | 2021-07-01 | 2021-09-07 | 青岛业高建设工程有限公司市北分公司 | Single-spliced channel steel anchor rod waist beam structure and using method thereof |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |