CN114382077B - Shear-resistant energy-absorbing grouting anchor rod - Google Patents
Shear-resistant energy-absorbing grouting anchor rod Download PDFInfo
- Publication number
- CN114382077B CN114382077B CN202210054781.7A CN202210054781A CN114382077B CN 114382077 B CN114382077 B CN 114382077B CN 202210054781 A CN202210054781 A CN 202210054781A CN 114382077 B CN114382077 B CN 114382077B
- Authority
- CN
- China
- Prior art keywords
- rod body
- rod
- sliding sleeve
- anchoring
- bending section
- 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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Links
- 238000004873 anchoring Methods 0.000 claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 16
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 238000007569 slipcasting Methods 0.000 claims 1
- 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
- 238000010276 construction Methods 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
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a shearing-resistant energy-absorbing grouting anchor rod, which comprises a rod body, wherein the rod body is provided with a plurality of straight rod sections, and a spiral bending section is arranged between two adjacent straight rod sections; the lower end of the rod body is connected with an anchor 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 integrated structure, and the spiral bending section is in a biconical shape with large middle and small two ends. The shearing-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 larger horizontal ground stress, is not easy to shear to cause failure, can tolerate certain shear deformation, 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, especially after being disturbed by engineering secondary disturbance, the stress field of the rock slope is disturbed, 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 with different scales exist in the rock body, and when the stress field is complex and uneven, the rock side slope is extremely easy to have accidents such as landslide, collapse and the like. Thus, its security is an important issue that the decision maker must face and consider. At present, anchor injection support is mainly adopted for protecting rock slopes. Common anchors include resin anchors, grouting anchors, metal reverse wedge anchors, and the like. The anchor rod has poor shear strength, and is easy to shear to cause failure on a slope with high 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 rod member has small allowable deformation, and has poor adaptability to loose and broken slopes with complex stress conditions and disorder slopes.
Disclosure of Invention
Therefore, the invention aims to provide the shear-resistant energy-absorbing grouting anchor rod with high shear strength and high horizontal ground stress resistance.
The invention is realized by adopting the following scheme: the shearing-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 anchor head assembly, and the upper end of the rod body is connected with a locking device.
Further, the spiral bending section and the straight rod sections at the two ends are of an integrated structure, and the spiral bending section is in a double-cone shape with a large middle part and small two ends.
Further, 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 9mm.
Further, the anchoring head assembly comprises a plurality of radial 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 the middle end and can swing up and down relative to the rod body; the lower end of the rod body is sleeved with a sliding sleeve which is positioned above the hinging part of the anchoring nail and can slide up and down relative to the rod body, a connecting rod is connected between the sliding sleeve and each anchoring nail, two ends of the connecting rod are respectively hinged with the sliding sleeve and the anchoring nails, the lower end of the rod body is fixedly connected with a fixed baffle ring positioned above the sliding sleeve, and a spring sleeved on the rod body to push the sliding sleeve downwards is arranged between the fixed baffle ring and the sliding sleeve.
Further, the upper end of the rod body is provided with a thread 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 thread part of the rod body.
Compared with the prior art, the invention has the following beneficial effects: the shearing-resistant energy-absorbing grouting anchor rod is convenient and quick to use and good in anchoring effect; the shear strength is high, the horizontal ground stress can be resisted, the rod piece is not easy to shear to cause failure, the rod piece is allowed to be subjected to certain shear deformation, and the method can be suitable for more complex rock slope engineering.
The present invention will be further described in detail below with reference to specific embodiments and associated drawings for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Drawings
FIG. 1 is a schematic view of the overall construction of an embodiment of the present invention;
FIG. 2 is a schematic view of a shaft construction in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the construction of an anchor head assembly in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a locking device in accordance with an embodiment of the present invention;
the reference numerals in the figures illustrate: the novel lock comprises a 1-rod body, a 2-straight rod section, a 3-spiral bending section, a 4-threaded part, a 5-spring, a 6-anchoring nail, a 7-sliding sleeve, an 8-connecting rod, a 9-bearing, a 10-fixed baffle ring, an 11-tray and a 12-lock.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. 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 in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1-4, the shear-resistant energy-absorbing grouting anchor rod comprises a rod body 1, wherein the rod body 1 is provided with a plurality of straight rod sections 2, 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 anchor head assembly, and the upper end of the rod body is connected with a locking device. The rod body spiral bending section 3 of the anchor rod is equivalent to a spring structure, the allowable deformation of the rod piece is large, the adaptability to loose and broken, complex and disordered slopes is good, the shear strength of the anchor rod is high, larger horizontal ground stress can be resisted, the anchor rod is not easy to shear to cause failure, the rod piece is allowed to have certain shear deformation, and energy is stored in the rod body in the form of strain energy, so that the anchor rod can adapt to more complex rock slope engineering.
In this embodiment, the spiral bending section 3 and the straight rod sections 2 at two ends are in an integral structure, and the spiral bending section 3 is in a biconical shape with large middle and small two 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 9mm. The whole rod body is formed by rolling a solid round steel body; the maximum width of the spiral curved section is 45mm.
In this embodiment, the anchoring head assembly includes a plurality of radially-distributed anchoring nails 6 circumferentially distributed around the lower end of the rod body, where the anchoring nails 6 are hinged to the end of the rod body toward the middle end and can swing up and down relative to the rod body; the lower end of the rod body is sleeved with 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, 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, the lower end of the rod body 1 is fixedly connected with a fixed baffle ring 10 positioned above the sliding sleeve, and a spring 5 sleeved on the rod body to push the sliding sleeve downwards is arranged between the fixed baffle ring 10 and the sliding sleeve 7; the two ends of the spring 5 are respectively abutted against the fixed baffle ring and the sliding sleeve, the anchor nails can swing up and down between two horizontal and vertical upwards positions, and the anchor nails can be overturned to a vertical upwards state by upwards overturning the anchor nails and upwards sliding the sliding sleeve to compress the spring; when the anchor rod is loosened, the sliding sleeve is pushed downwards by the spring, the sliding sleeve pushes the anchor nails through the connecting rods by the spring energy release pushing sliding sleeve, the lower hem of the anchor nails is opened, and the anchor heads can be inserted into the hole walls in cooperation with actions such as rotation and pulling, so that the anchor heads are firmly anchored in the rock slope; the anchor can be directly and integrally installed when in use, is convenient and quick, and has good anchoring effect.
In the concrete implementation process, the lower end of the rod body can be provided with a limit baffle for supporting the anchoring nail to enable the maximum downward swing angle of the anchoring nail to be in a horizontal state, and the maximum downward swing angle of the anchoring nail can only reach the horizontal state under the action of the limit baffle; the spring can be arranged to push the sliding sleeve to push the anchoring nail to the hinging position of the anchoring nail, and the anchoring nail is just in a horizontal state.
In this embodiment, the upper end of the rod body is provided with a threaded portion 4, and the locking device includes a tray 11 sleeved at 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 a metal plate with a hole in the center, the hole diameter is 20mm, the outer diameter is 60mm, the thickness is 10mm, the central hole penetrates through the rod body, the lockset is a nut, and the lockset can be locked on the threaded part of the rod body through rotation so as to fix the tray and lock the anchor rod.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the invention discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto 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 above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a shearing-resistant energy-absorbing slip casting stock which characterized in that: the device comprises a rod body, wherein the rod body is provided with a plurality of straight rod sections, and a spiral bending section is arranged between two adjacent straight rod sections; the lower end of the rod body is connected with an anchor head assembly, and 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 integrated structure, and the spiral bending section is in a double cone shape with a large middle part and small two ends; the anchoring head assembly comprises a plurality of radial 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 the middle end and can swing up and down relative to the rod body; the lower end of the rod body is sleeved with a sliding sleeve which is positioned above the hinging part of the anchoring nail and can slide up and down relative to the rod body, a connecting rod is connected between the sliding sleeve and each anchoring nail, two ends of the connecting rod are respectively hinged with the sliding sleeve and the anchoring nails, the lower end of the rod body is fixedly connected with a fixed baffle ring positioned above the sliding sleeve, and a spring sleeved on the rod body to push the sliding sleeve downwards is arranged between the fixed baffle ring and the sliding sleeve.
2. The shear resistant energy absorbing grouting bolt of claim 1, wherein: the total length of the rod body is 2m, and the diameter of the straight rod section is 18mm.
3. The shear resistant energy absorbing grouting bolt of claim 1, wherein: 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 CN114382077A (en) | 2022-04-22 |
| CN114382077B true 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 (8)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9677399B2 (en) * | 2013-07-12 | 2017-06-13 | Minova International Limited | Yieldable rock anchor |
-
2022
- 2022-01-18 CN CN202210054781.7A patent/CN114382077B/en active Active
Patent Citations (8)
| 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 |
| 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 |
|---|---|
| CN114382077A (en) | 2022-04-22 |
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