CN109252518B - Variable-diameter anchor rod and anchoring method thereof - Google Patents
Variable-diameter anchor rod and anchoring method thereof Download PDFInfo
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- CN109252518B CN109252518B CN201811393840.3A CN201811393840A CN109252518B CN 109252518 B CN109252518 B CN 109252518B CN 201811393840 A CN201811393840 A CN 201811393840A CN 109252518 B CN109252518 B CN 109252518B
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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
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Abstract
A variable diameter anchor rod and an anchoring method thereof relate to an anchor rod and an anchoring method thereof. Standard cell festival is equipped with central pipeline, standard cell festival head and the tail both ends system respectively has guide protruding one and guide recess one, standard cell festival lateral wall is fixed with the enhancement screw thread, reducing unit festival is equipped with eccentric pipeline, reducing unit festival head and the tail both ends system respectively has guide protruding two and guide recess two, reducing unit festival lateral wall is fixed with the reaming sword, connect through a pressure spring is coaxial between every adjacent standard cell festival and the reducing unit festival, a plurality of standard cell festival wear even through wire rope with a plurality of reducing unit festival, wire rope one end is fixed with the spacing spheroid, the wire rope other end is positioned the tight fixed position of locating part, the standard cell festival lateral wall that is located the afterbody still assembles in proper order and ends the thick liquid stopper, backing plate and nut. Can carry out the reducing to the pore, the structure is more reasonable, and is stable effective.
Description
Technical Field
The invention relates to an anchor rod and an anchoring method thereof, in particular to a variable-diameter anchor rod and an anchoring method thereof.
Background
The anchor bolt supporting technology is widely applied to supporting and reinforcing structures in the field of roads and bridges due to the advantages of simple process, quick operation, low cost and the like. Because the anchor rod is subjected to axial tension, axial shear stress is formed between the anchoring agent and the inner wall of the pore channel, and the shear stress provided by the anchoring agent and the bonding surface of the pore channel can overcome the tension of the anchor rod to ensure that the anchoring is effective, so that the requirement of anchor rod support on an anchoring point rock-soil layer is high.
The main means adopted at present for improving the anchoring effect of the anchor rod is to cause the pore passage to be reduced during drilling so as to improve the tensile strength of the anchor rod, but the elastic force of a spring is generally utilized during reducing the pore passage in the prior art, such as an authorization notice number CN105887880B, an invention patent named as an anchoring method of the anchor rod in 12 months and 12 days in 2017, an invention patent named as an anchoring device of a roadway anchoring hole bottom in 15 days in 2018, an authorization notice number CN105401882B, and the invention patent named as an anchoring device of the roadway anchoring hole bottom in 15 days in 2018, and the like, and the elastic force of the spring is utilized during reducing the pore passage so as to hardly determine whether the reducing is effectively completed, and the stability degree is not high.
Therefore, in order to solve the unstable factors caused by the spring members in the prior art, a more reasonable, stable and effective variable diameter anchor rod is urgently needed.
Disclosure of Invention
In order to overcome the defects in the background art, the invention provides a variable-diameter anchor rod and an anchoring method thereof.
The invention adopts the following technical scheme: a reducing anchor rod comprises an anchor rod body, a grout stop plug, a base plate and nuts, wherein the anchor rod body comprises a plurality of standard unit sections and a plurality of reducing unit sections which correspond to each other end to end and are alternately arranged, the standard unit sections and the reducing unit sections are both circular tubular members, the standard unit sections are provided with central pipelines, the end portions and the end portions of the standard unit sections correspond to the central pipelines respectively and are integrally provided with guide bulges I and guide grooves I, the outer side wall of each standard unit section is fixedly provided with reinforcing threads, each reducing unit section is provided with an eccentric pipeline, the end portions and the end portions of each reducing unit section correspond to the eccentric pipelines respectively and are integrally provided with guide bulges II and guide grooves II, one side, far away from the eccentric pipeline, of the outer side wall of each reducing unit section is fixedly provided with a hole expanding blade, the guide bulges II are matched with the guide grooves I and the guide bulges II, every adjacent standard unit festival and reducing unit festival are connected through a pressure spring is coaxial between the head and the tail, and a plurality of standard unit festival and a plurality of reducing unit festival wear to link through wire rope, wire rope one end is worn out and is located the standard unit festival of prelude and is fixed with spacing spheroid, and the wire rope other end is worn out and is located the standard unit festival of afterbody and is fixed a position by a positioning member fastening, the standard unit festival lateral wall that is located the afterbody still is equipped with in proper order and ends thick liquid stopper, backing plate and nut.
The invention relates to an anchoring method of a reducing anchor rod, which comprises the following steps:
the method comprises the following steps: drilling a hole channel with the same diameter at an anchoring point by using a drill bit, then selecting a corresponding number of standard unit sections and variable diameter unit sections according to the depth of the hole channel, connecting and assembling the standard unit sections and the variable diameter unit sections through a pressure spring, penetrating and connecting the standard unit sections and the variable diameter unit sections through a steel wire rope to form a variable diameter anchor rod, extending the variable diameter anchor rod into the hole channel, and keeping the pressure spring in a natural state to enable the standard unit sections and the variable diameter unit sections to be;
step two: the steel wire rope is pulled outwards to enable the standard unit section and the reducing unit section to be inserted and positioned under the action of the first guide protrusion, the second guide groove and the first guide groove, the reducing unit section is dislocated with the standard unit section due to the eccentric arrangement of the reducing unit section, the steel wire rope is fastened and positioned through the positioning piece, and the drilling machine is used for rotating the reducing anchor rod to enable the hole expanding blade of the reducing unit section to expand the hole channel corresponding position into a large-diameter section;
step three: the positioning piece is disassembled and the grout stop plug, the backing plate and the nut are assembled, the reducing anchor rod is used for filling the anchoring agent, the limiting ball body can be jacked open and the pore channel is filled with the anchoring agent during filling, and anchoring is finished after the anchoring agent is solidified.
Compared with the prior art, the invention has the beneficial effects that: the steel wire rope diameter-changing device is formed by alternately assembling the standard unit sections and the diameter-changing unit sections, the pressure spring can ensure that the standard unit sections and the diameter-changing unit sections correspond in position and does not influence the dislocation and diameter changing of the standard unit sections and the diameter-changing unit sections under the tensioning action of the steel wire rope, and the diameter-changing device can change the diameter of a pore passage through the hole-expanding blades of the diameter-changing unit sections, so that the steel wire rope diameter-changing device is more reasonable in structure.
Drawings
FIG. 1 is a schematic structural view of the reducing anchor rod of the present invention before reducing;
FIG. 2 is a schematic structural view of the reducing anchor rod of the present invention after reducing;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an isometric cross-sectional view of a modular unit segment of the present invention;
FIG. 5 is an axial cross-sectional view of a reducer unit section of the present invention;
FIG. 6 is an isometric view of a spacer of the present invention;
fig. 7 is a schematic view of an anchoring structure of the variable diameter anchor rod of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in figures 1 to 7, the invention discloses a variable-diameter anchor rod, which comprises an anchor rod body, a grout stop plug 10, a base plate 6 and a nut 7, wherein the anchor rod body comprises a plurality of standard unit sections 1 and a plurality of variable-diameter unit sections 2 which are arranged end to end in an alternating manner, the standard unit sections 1 and the variable-diameter unit sections 2 are both circular tubular members, the standard unit sections 1 are provided with central pipelines 1-1, the end to end ends of the standard unit sections 1 respectively correspond to the central pipelines 1-1 and are integrally provided with guide bulges 1-2 and guide grooves 1-3, the outer side wall of each standard unit section 1 is fixedly provided with reinforcing threads 1-4, the variable-diameter unit sections 2 are provided with eccentric pipelines 2-1, the end to end ends of the variable-diameter unit sections 2 respectively correspond to the eccentric pipelines 2-1 and are integrally provided with guide bulges two 2-2 and guide grooves two 2-3, a hole expanding blade 2-4 is fixed on one side of the outer side wall of the reducing unit section 2 far away from the eccentric pipeline 2-1, the shapes of the guide bulges 2-2 and the guide grooves 1-3 and the shapes of the guide bulges 1-2 and the guide grooves 2-3 are matched, every adjacent standard unit section 1 and the diameter-variable unit section 2 are coaxially connected end to end through a pressure spring 3, the standard unit sections 1 and the diameter-variable unit sections 2 are connected through a steel wire rope 8, one end of the steel wire rope 8 penetrates through the standard unit section 1 at the head part and is fixed with a limiting sphere 8-1, the other end of the steel wire rope 8 penetrates through the standard unit section 1 at the tail part and is tightly fixed by a positioning piece 9, and the outer side wall of the standard unit section 1 positioned at the tail part is also sequentially provided with a grout stop plug 10, a backing plate 6 and a nut 7.
The second embodiment is as follows: as shown in fig. 1, 2, 4 and 5, in this embodiment, a first specific embodiment is further described, the length of the standard unit section 1 is not less than the length of the diameter-variable unit section 2, and the thicknesses of the standard unit section 1 and the diameter-variable unit section 2 are the same.
The third concrete implementation mode: as shown in fig. 3, 4, and 5, in this embodiment, a first specific embodiment is further described, a cylindrical retraction groove 4 and an annular clamping groove 5 are coaxially and concavely formed at the head end and the tail end of the standard unit section 1 and the diameter-variable unit section 2, one end of each of the compression springs 3 is fixed at the bottom of the corresponding cylindrical retraction groove 4, and the other end of each of the compression springs 3 is in interference fit with the corresponding annular clamping groove 5.
The fourth concrete implementation mode: as shown in fig. 1, this embodiment is a further description of the first embodiment, when the pressure spring 3 is in a natural length, the tops of the guiding protrusions two 2-2 or the guiding protrusions one 1-2 are located in the range of the corresponding guiding grooves one 1-3 or the corresponding guiding grooves two 2-3.
The fifth concrete implementation mode: as shown in fig. 3, 4 and 5, in this embodiment, a first guiding protrusion 1-2 and a second guiding protrusion 2-2 are both in a shape of a straight frustum pyramid, and when the first guiding protrusion 1-2 is inserted into and fitted with the second guiding groove 2-3, or the second guiding protrusion 2-2 is inserted into and fitted with the first guiding groove 1-3, a space is left between the standard unit section 1 and the diameter-variable unit section 2.
The sixth specific implementation mode: as shown in fig. 1, 2 and 6, in this embodiment, a first specific embodiment is further described, the positioning element 9 includes a limiting circular plate 9-1 and a positioning pipe head 9-2, the limiting circular plate 9-1 and the positioning pipe head 9-2 are coaxially fixed into a whole and are arranged in a penetrating manner, a threaded through hole is radially formed in a pipe wall of the positioning pipe head 9-2, a fastening bolt 9-3 is screwed to the pipe wall, and the fastening bolt 9-3 fastens and positions the steel wire rope 8 passing through the positioning pipe head 9-2.
The seventh embodiment: as shown in fig. 1 to 7, the present embodiment discloses an anchoring method for a variable diameter anchor rod according to any one of the first to sixth embodiments, the anchoring method including the steps of:
the method comprises the following steps: firstly, drilling a hole channel 11 with the same diameter at an anchoring point by using a drill bit, then selecting a corresponding number of standard unit sections 1 and variable diameter unit sections 2 to be connected and assembled through a pressure spring 3 according to the depth of the hole channel 11, and penetrating and connecting the standard unit sections 1 and the variable diameter unit sections 2 through a steel wire rope 8 to form a variable diameter anchor rod, extending the variable diameter anchor rod into the hole channel 11, and keeping the pressure spring 3 in a natural state to enable the standard unit sections 1 and the variable diameter unit sections 2 to be coaxial;
step two: the steel wire rope 8 is pulled outwards to enable the standard unit section 1 and the reducing unit section 2 to be inserted and positioned under the action of the first guide protrusion 1-2, the second guide groove 2-3 and the first guide protrusion 2-2 and the first guide groove 1-3, the reducing unit section 2 is dislocated with the standard unit section 1 due to the eccentric arrangement of the reducing unit section 2, the steel wire rope 8 is fixedly positioned through the positioning piece 9, and the drilling machine is used for rotating the reducing anchor rod to enable the hole expanding blades 2-4 of the reducing unit section 2 to expand the corresponding position of the hole channel 11 into a large-diameter section 11-1;
step three: the positioning piece 9 is disassembled, the grout stop plug 10, the backing plate 6 and the nut 7 are assembled, the variable diameter anchor rod is used for pouring the anchoring agent 12, the limiting ball 8-1 is pushed open and the pore channel 11 is filled with the anchoring agent 12 when the anchoring agent 12 is poured, and the anchoring is finished after the anchoring agent 12 is solidified.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a reducing stock, includes the stock body, ends thick liquid stopper (10), backing plate (6) and nut (7), its characterized in that: the anchor rod body comprises a plurality of standard unit sections (1) and a plurality of reducing unit sections (2) which are arranged end to end in an alternating mode, the standard unit sections (1) and the reducing unit sections (2) are all tubular members, the standard unit sections (1) are provided with central pipelines (1-1), the end to end ends of the standard unit sections (1) respectively correspond to the central pipelines (1-1) and are integrally provided with guide bulges (1-2) and guide grooves (1-3), the outer side wall of each standard unit section (1) is fixedly provided with reinforcing threads (1-4), each reducing unit section (2) is provided with an eccentric pipeline (2-1), the end to end ends of each reducing unit section (2) respectively correspond to the eccentric pipelines (2-1) and are integrally provided with guide bulges (2-2) and guide grooves (2-3), one side, far away from the eccentric pipeline (2-1), of the outer side wall of the reducing unit section (2) is fixed with a hole expanding blade (2-4), the shapes of the two guide protrusions (2-2) and the first guide grooves (1-3) and the shapes of the two guide protrusions (1-2) and the two guide grooves (2-3) are matched, the heads and the tails of every two adjacent standard unit sections (1) and the reducing unit sections (2) are coaxially connected through a pressure spring (3), the standard unit sections (1) and the reducing unit sections (2) are connected in a penetrating mode through a steel wire rope (8), one end of the steel wire rope (8) penetrates through the standard unit section (1) located at the head part and is fixed with a limiting ball body (8-1), and the other end of the steel wire rope (8) penetrates through the standard unit section (1) located at the tail part and is tightly fixed by a positioning piece (9), the outer side wall of the standard unit section (1) positioned at the tail part is also sequentially provided with a grout stop plug (10), a backing plate (6) and a nut (7).
2. The variable diameter anchor rod of claim 1, wherein: the length of the standard unit section (1) is not less than that of the diameter-variable unit section (2), and the thickness of the standard unit section (1) is the same as that of the diameter-variable unit section (2).
3. The variable diameter anchor rod of claim 1, wherein: the standard unit section (1) and the head and tail ends of the variable diameter unit section (2) are coaxially and concavely provided with a cylindrical retractable groove (4) and an annular clamping groove (5) respectively, one end of each pressure spring (3) is fixed correspondingly to the bottom of the cylindrical retractable groove (4), and the other end of each pressure spring (3) corresponds to the annular clamping groove (5) in an interference fit mode.
4. The variable diameter anchor rod of claim 1, wherein: when the pressure spring (3) is in a natural length, the tops of the second guide protrusions (2-2) or the first guide protrusions (1-2) are located in the range of the corresponding first guide grooves (1-3) or the second guide grooves (2-3).
5. The variable diameter anchor rod of claim 1, wherein: the first guide protrusion (1-2) and the second guide protrusion (2-2) are both in a shape of a straight prismoid, and when the first guide protrusion (1-2) is in plug fit with the second guide groove (2-3) or the second guide protrusion (2-2) is in plug fit with the first guide groove (1-3), a gap is reserved between the standard unit section (1) and the reducing unit section (2).
6. The variable diameter anchor rod of claim 1, wherein: the positioning piece (9) comprises a limiting circular plate (9-1) and a positioning tube head (9-2), the limiting circular plate (9-1) and the positioning tube head (9-2) are coaxially fixed into a whole and are arranged in a penetrating mode, a thread through hole is radially formed in the tube wall of the positioning tube head (9-2) and is connected with a fastening bolt (9-3) in a screwing mode, and the fastening bolt (9-3) is used for performing fastening positioning on a steel wire rope (8) penetrating through the positioning tube head (9-2).
7. A method of anchoring a variable diameter rock bolt according to any one of claims 1 to 6, wherein: the anchoring method comprises the following steps:
the method comprises the following steps: drilling a hole channel (11) with the same diameter at an anchoring point by using a drill bit, then selecting a corresponding number of standard unit sections (1) and variable-diameter unit sections (2) to be connected and assembled through a pressure spring (3) according to the depth of the hole channel (11), penetrating and connecting through a steel wire rope (8) to form a variable-diameter anchor rod, extending the variable-diameter anchor rod into the hole channel (11), and keeping the pressure spring (3) in a natural state to enable the standard unit sections (1) and the variable-diameter unit sections (2) to be coaxial;
step two: the steel wire rope (8) is pulled outwards to enable the standard unit section (1) and the reducing unit section (2) to be inserted and positioned under the action of the first guide protrusion (1-2), the second guide groove (2-3) and the second guide protrusion (2-2) and the first guide groove (1-3), the reducing unit section (2) is staggered with the standard unit section (1) due to the eccentric arrangement of the reducing unit section, the steel wire rope (8) is fixedly positioned through the positioning piece (9), and the drilling machine is used for rotating the reducing anchor rod to enable the hole expanding blade (2-4) of the reducing unit section (2) to expand the hole channel (11) into a large-diameter section (11-1) at the corresponding position;
step three: the positioning piece (9) is disassembled, the grout stop plug (10), the backing plate (6) and the nut (7) are assembled, the reducing anchor rod is used for pouring the anchoring agent (12), the limiting ball body (8-1) can be pushed open and the pore channel (11) is filled with the anchoring agent (12) when the anchoring agent (12) is poured, and anchoring is completed after the anchoring agent (12) is solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393840.3A CN109252518B (en) | 2018-11-21 | 2018-11-21 | Variable-diameter anchor rod and anchoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393840.3A CN109252518B (en) | 2018-11-21 | 2018-11-21 | Variable-diameter anchor rod and anchoring method thereof |
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| Publication Number | Publication Date |
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| CN109252518A CN109252518A (en) | 2019-01-22 |
| CN109252518B true CN109252518B (en) | 2020-08-18 |
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| CN201811393840.3A Active CN109252518B (en) | 2018-11-21 | 2018-11-21 | Variable-diameter anchor rod and anchoring method thereof |
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| CN114837717B (en) * | 2022-07-04 | 2022-09-13 | 应急管理部国家自然灾害防治研究院 | Anchor cable reinforcing equipment for improving stability of tunnel surrounding rock in layered rock slope |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11311081A (en) * | 1998-04-28 | 1999-11-09 | Kumagai Gumi Co Ltd | Work execution method of ground anchor by variable bit |
| CN100513745C (en) * | 2005-11-11 | 2009-07-15 | 中国京冶工程技术有限公司 | Construction method for mechanical hole reaming of anchor rod |
| CN202140022U (en) * | 2011-07-11 | 2012-02-08 | 无锡金帆钻凿设备有限公司 | Anchor rod bottom-enlarging bit |
| CN204899780U (en) * | 2015-04-24 | 2015-12-23 | 天地科技股份有限公司 | Weak glued soft rock tunnel anchorage holes reaming device |
| CN204959746U (en) * | 2015-08-18 | 2016-01-13 | 河海大学 | Expand integral type stock soon |
| CN105952380B (en) * | 2016-06-17 | 2018-06-29 | 四川众基精锚工程技术有限公司 | A kind of mould broaching equipment and its expanding method |
| CN107327271A (en) * | 2017-06-26 | 2017-11-07 | 深圳宏业基岩土科技股份有限公司 | The eccentric down-hole hammer of anchor pole drilling classification reaming |
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Effective date of registration: 20230815 Address after: 056000 East of Sishuang Road South Section, Jize County, Handan City, Hebei Province Patentee after: Handan Shuangyou Mining Machinery Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20230815 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 150000 Xueyuan Road, Limin Development Zone, Harbin City, Heilongjiang Province Patentee before: HEILONGJIANG College OF CONSTRUCTION |
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