CN114382077A - Energy-absorbing slip casting stock shears - Google Patents
Energy-absorbing slip casting stock shears Download PDFInfo
- Publication number
- CN114382077A CN114382077A CN202210054781.7A CN202210054781A CN114382077A CN 114382077 A CN114382077 A CN 114382077A CN 202210054781 A CN202210054781 A CN 202210054781A CN 114382077 A CN114382077 A CN 114382077A
- Authority
- CN
- China
- Prior art keywords
- rod
- rod body
- shear
- sliding sleeve
- absorbing
- 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.)
- Granted
Links
- 238000007569 slipcasting Methods 0.000 title claims description 3
- 238000004873 anchoring Methods 0.000 claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention relates to a shear-resistant energy-absorbing grouting anchor rod which comprises a rod body, wherein a plurality of straight rod sections are arranged on the rod body, and a spiral bent section is arranged between every two adjacent straight rod sections; the lower end of the rod body is connected with an anchoring head assembly, the upper end of the rod body is connected with a locking device, the spiral bending section and the straight rod sections at the two ends are of an integral structure, and the spiral bending section is in a double-cone shape with a large middle and two small ends. The shear-resistant energy-absorbing grouting anchor rod is convenient and quick to use and good in anchoring effect; the anchor rod has high shear strength, can resist high horizontal ground stress, is not easy to shear to cause failure, allows certain shear deformation of the rod piece, and can adapt to more complex rock slope engineering.
Description
Technical Field
The invention relates to the field of rock slope engineering, in particular to a shear-resistant energy-absorbing grouting anchor rod.
Background
Under the action of natural conditions and human factors, particularly after secondary engineering disturbance, a rock slope stress field is disordered, the stress condition is complex and unknown, and the rock is in an anisotropic state. However, the tensile strength and the shear strength of the rock are far lower than the compressive strength, structural surfaces of different scales also exist in the rock body, and when the stress field is complex and uneven, accidents such as landslide and collapse easily occur on the rock slope. Thus, its security is an important issue that decision makers must face and consider. At present, for protecting rock slopes, anchor grouting support is mainly adopted. Commonly used anchor rods include resin anchor rods, grouting anchor rods, metal inverted wedge anchor rods and the like. The anchor rod has poor shear strength, and is easy to shear to cause failure in a side slope with large horizontal stress; the grouting yield is low, a grouting hollow area exists, the rod body cannot be well surrounded, and the designed anchoring strength cannot be achieved; the allowable deformation of the rod piece is small, and the rod piece has poor adaptability to loose and broken slopes with complex stress conditions and disorder slopes.
Disclosure of Invention
In view of the above, the present invention is directed to a shear-resistant energy-absorbing grouting anchor rod having high shear strength and capable of resisting large horizontal ground stress.
The invention is realized by adopting the following scheme: a shear-resistant energy-absorbing grouting anchor rod comprises a rod body, wherein a plurality of straight rod sections are arranged on the rod body, and a spiral bending section is arranged between every two adjacent straight rod sections; the lower end of the rod body is connected with an anchoring head assembly, and the upper end of the rod body is connected with a locking device.
Furthermore, the spiral bending section and the straight rod sections at the two ends are of an integral structure, and the spiral bending section is of a double-cone shape with a large middle and two small ends.
Furthermore, the total length of the rod body is 2m, the diameter of the straight rod section is 18mm, and the diameter of the spiral bending section is 9 mm.
Furthermore, the anchoring head assembly comprises a plurality of radially anchoring nails which are uniformly distributed around the lower end of the rod body along the circumferential direction, and one ends of the anchoring nails facing the middle part are hinged to the end part of the rod body and can swing up and down relative to the end part; the outer cover of body of rod lower extreme has the sliding sleeve that is located anchor nail articulated portion top and can slide from top to bottom relatively the body of rod, be connected with the connecting rod between sliding sleeve and each anchor nail, the connecting rod both ends are articulated mutually with sliding sleeve and anchor nail respectively, and the lower tip of the body of rod links firmly the fixed fender ring that is located the sliding sleeve top, is equipped with the spring of overcoat in order to push down the sliding sleeve on the body of rod between fixed fender ring and the sliding sleeve.
Furthermore, the upper end of the rod body is provided with a threaded part, and the locking device comprises a tray sleeved on the upper end of the rod body and a lock in threaded connection with the threaded part of the rod body.
Compared with the prior art, the invention has the following beneficial effects: the shear-resistant energy-absorbing grouting anchor rod is convenient and quick to use and good in anchoring effect; the shear strength is high, the large horizontal ground stress can be resisted, the failure caused by shearing is not easy to occur, the rod piece allows certain shearing deformation, and the method can adapt to more complex rock slope engineering.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall configuration of an embodiment of the present invention;
FIG. 2 is a schematic view of a rod body according to an embodiment of the present invention;
FIG. 3 is a schematic view of an anchor head assembly configuration in an embodiment of the present invention;
FIG. 4 is a schematic view showing the construction of a lock device in the embodiment of the present invention;
the reference numbers in the figures illustrate: 1-rod body, 2-straight rod section, 3-spiral bending section, 4-thread section, 5-spring, 6-anchoring nail, 7-sliding sleeve, 8-connecting rod, 9-bearing, 10-fixed baffle ring, 11-tray and 12-lockset.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 to 4, a shear-resistant energy-absorbing grouting anchor rod comprises a rod body 1, wherein a plurality of straight rod sections 2 are arranged on the rod body 1, and a spiral bending section 3 is arranged between two adjacent straight rod sections; the lower end of the rod body is connected with an anchoring head assembly, and the upper end of the rod body is connected with a locking device. The spiral bending section 3 of the rod body of the anchor rod is equivalent to a spring structure, the allowable deformation of the rod body is large, the adaptability to loose and broken side slopes with complex stress conditions and disorder side slopes is good, the shear strength of the anchor rod is large, large horizontal ground stress can be resisted, the anchor rod is not easy to shear to cause failure, the rod body allows certain shear deformation, and energy is stored in the rod body in a strain energy mode and can adapt to more complex rock side slope engineering.
In this embodiment, the spiral bending section 3 and the straight rod sections 2 at two ends are an integral structure, and the spiral bending section 3 is in a double-cone shape with a large middle and two small ends.
In this embodiment, the total length of the rod body 1 is 2m, the diameter of the straight rod section is 18mm, and the diameter of the spiral bending section is 9 mm. The whole rod body is integrally rolled by solid round steel; the maximum width of the helically curved section is 45 mm.
In this embodiment, the anchoring head assembly includes a plurality of radially-arranged anchoring nails 6 uniformly distributed around the lower end of the rod body along the circumferential direction, and the anchoring nails 6 are hinged to the end of the rod body towards one end of the middle and can swing up and down relative to the end of the rod body; a sliding sleeve 7 which is positioned above the hinging part of the anchoring nails and can slide up and down relative to the rod body is sleeved outside the lower end of the rod body, a connecting rod 8 is connected between the sliding sleeve 7 and each anchoring nail, two ends of the connecting rod 8 are respectively hinged with the sliding sleeve 7 and the anchoring nails 6, a fixed baffle ring 10 positioned above the sliding sleeve is fixedly connected to the lower end part of the rod body 1, and a spring 5 which is sleeved on the rod body to push the sliding sleeve downwards is arranged between the fixed baffle ring 10 and the sliding sleeve 7; two ends of the spring 5 are respectively abutted against the fixed baffle ring and the sliding sleeve, the anchoring nail can swing up and down between two positions in the horizontal direction and the vertical direction, and the spring can be compressed by turning the anchoring nail upwards and sliding the sliding sleeve upwards to enable the anchoring nail to be turned to a state in the vertical direction; when the anchor head is loosened, the spring pushes the sliding sleeve downwards, the energy of the spring is released to push the sliding sleeve, the sliding sleeve pushes the anchor nail through the connecting rod, the lower hem of the anchor nail is opened, and the anchor head can be inserted into the hole wall in the hole and is firmly anchored in the rock slope by matching actions such as rotation, pulling and the like; when in use, the anchor can be directly and integrally installed, is convenient and quick and has good anchoring effect.
In the specific implementation process, the lower end of the rod body can be provided with a limiting baffle plate which is used for propping against the anchoring nail to enable the maximum downward swinging angle of the anchoring nail to be in a horizontal state, and the maximum downward swinging angle of the anchoring nail can only reach the horizontal state under the action of the limiting baffle plate; the anchoring nail can be in a horizontal state when the spring pushes the sliding sleeve to push the hinged position of the anchoring nail.
In this embodiment, the upper end of the rod body is provided with a threaded portion 4, and the locking device comprises a tray 11 sleeved on the upper end of the rod body and a lock 12 in threaded connection with the threaded portion of the rod body; the tray is the foraminiferous metal sheet in center, and aperture 20mm, external diameter 60mm, thickness 10mm, and the body of rod is passed in centre hole department, and the tool to lock is the nut, can be through the screw thread part of rotatory locking at the body of rod to fixed tray, locking stock.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides an energy-absorbing slip casting stock shears which characterized in that: the device comprises a rod body, wherein a plurality of straight rod sections are arranged on the rod body, and a spiral bent section is arranged between every two adjacent straight rod sections; the lower end of the rod body is connected with an anchoring head assembly, and the upper end of the rod body is connected with a locking device.
2. A shear-resistant energy-absorbing grouting anchor according to claim 1, characterized in that: the spiral bending section and the straight rod sections at two ends are of an integral structure, and the spiral bending section is of a double-cone shape with a large middle and two small ends.
3. A shear-resistant energy-absorbing grouting anchor according to claim 2, characterized in that: the total length of the rod body is 2m, the diameter of the straight rod section is 18mm, and the diameter of the spiral bending section is 9 mm.
4. A shear-resistant energy-absorbing grouting anchor according to claim 1, characterized in that: the anchoring head assembly comprises a plurality of radially anchoring nails which are uniformly distributed around the lower end of the rod body along the circumferential direction, and the anchoring nails are hinged to the end part of the rod body towards one end in the middle and can swing up and down relative to the end part; the outer cover of body of rod lower extreme has the sliding sleeve that is located anchor nail articulated portion top and can slide from top to bottom relatively the body of rod, be connected with the connecting rod between sliding sleeve and each anchor nail, the connecting rod both ends are articulated mutually with sliding sleeve and anchor nail respectively, and the lower tip of the body of rod links firmly the fixed fender ring that is located the sliding sleeve top, is equipped with the spring of overcoat in order to push down the sliding sleeve on the body of rod between fixed fender ring and the sliding sleeve.
5. A shear-resistant energy-absorbing grouting anchor according to claim 1, characterized in that: the upper end of the rod body is provided with a threaded part, and the locking device comprises a tray sleeved at the upper end of the rod body and a lock in threaded connection with the threaded part of the rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054781.7A CN114382077B (en) | 2022-01-18 | 2022-01-18 | Shear-resistant energy-absorbing grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054781.7A CN114382077B (en) | 2022-01-18 | 2022-01-18 | Shear-resistant energy-absorbing grouting anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114382077A true CN114382077A (en) | 2022-04-22 |
| CN114382077B CN114382077B (en) | 2024-04-05 |
Family
ID=81203387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210054781.7A Active CN114382077B (en) | 2022-01-18 | 2022-01-18 | Shear-resistant energy-absorbing grouting anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114382077B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305687A (en) * | 1979-01-26 | 1981-12-15 | Jack Parker | Anchoring system for rock bolts |
| KR100797818B1 (en) * | 2007-07-09 | 2008-02-01 | (주)서림건설 | Fixing device of removal rock-bolt |
| KR20090113443A (en) * | 2008-04-28 | 2009-11-02 | (주)서림건설 | Multipurpose Fixing Device of Rock-Bolt |
| KR100979492B1 (en) * | 2009-08-17 | 2010-09-01 | 주식회사 무진네오테크 | Combined triple-spiral type underground anchor and rock bolt and method of reinfocing bearing power of ground using the same |
| US20160168993A1 (en) * | 2013-07-12 | 2016-06-16 | Minova International Limited | Yieldable rock anchor |
| CN106759321A (en) * | 2016-12-30 | 2017-05-31 | 山东大学 | A kind of anchor pole and its construction technology for improving retaining wall bearing capacity |
| CN210033497U (en) * | 2019-06-06 | 2020-02-07 | 北京市市政工程研究院 | Hollow grouting anchor rod |
| CN210033496U (en) * | 2019-05-29 | 2020-02-07 | 中铁十四局集团第二工程有限公司 | Multilayer annular area anti-shear antiskid stock |
| WO2021024229A1 (en) * | 2019-08-07 | 2021-02-11 | Mohlalefi Engineering (Pty) Ltd. | Shearing nut for a roof bolt |
-
2022
- 2022-01-18 CN CN202210054781.7A patent/CN114382077B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305687A (en) * | 1979-01-26 | 1981-12-15 | Jack Parker | Anchoring system for rock bolts |
| KR100797818B1 (en) * | 2007-07-09 | 2008-02-01 | (주)서림건설 | Fixing device of removal rock-bolt |
| KR20090113443A (en) * | 2008-04-28 | 2009-11-02 | (주)서림건설 | Multipurpose Fixing Device of Rock-Bolt |
| KR100979492B1 (en) * | 2009-08-17 | 2010-09-01 | 주식회사 무진네오테크 | Combined triple-spiral type underground anchor and rock bolt and method of reinfocing bearing power of ground using the same |
| US20160168993A1 (en) * | 2013-07-12 | 2016-06-16 | Minova International Limited | Yieldable rock anchor |
| CN106759321A (en) * | 2016-12-30 | 2017-05-31 | 山东大学 | A kind of anchor pole and its construction technology for improving retaining wall bearing capacity |
| CN210033496U (en) * | 2019-05-29 | 2020-02-07 | 中铁十四局集团第二工程有限公司 | Multilayer annular area anti-shear antiskid stock |
| CN210033497U (en) * | 2019-06-06 | 2020-02-07 | 北京市市政工程研究院 | Hollow grouting anchor rod |
| WO2021024229A1 (en) * | 2019-08-07 | 2021-02-11 | Mohlalefi Engineering (Pty) Ltd. | Shearing nut for a roof bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114382077B (en) | 2024-04-05 |
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