CN209837018U - Prefabricated prestressed anchor rod construction structure - Google Patents
Prefabricated prestressed anchor rod construction structure Download PDFInfo
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- CN209837018U CN209837018U CN201920128725.7U CN201920128725U CN209837018U CN 209837018 U CN209837018 U CN 209837018U CN 201920128725 U CN201920128725 U CN 201920128725U CN 209837018 U CN209837018 U CN 209837018U
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- Prior art keywords
- slurry
- anchor
- slip casting
- construction structure
- casting pipe
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- 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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a prestressed anchorage pole's technical field discloses prefabricated formula prestressed anchorage pole construction structures, including drilling and arranging the inside core of drilling in, the core includes many anchor bars, slurry and slip casting pipe, the one end embedding slurry of anchor bar, the other end of anchor bar is towards deviating from the slurry direction and extending to arrange, the one end embedding slurry of slip casting pipe, the slurry has the bottom that is close to the hole bottom of drilling, the slip casting pipe runs through the bottom of slurry, the other end of slip casting pipe is towards deviating from the slurry direction and extending to arrange, the one end of anchor bar and the one end of slip casting pipe are fixed arrangement with the slurry respectively. Due to the fact that the core body is prefabricated, the quality of slurry is effectively guaranteed, and the problem that the stability of the bearing capacity of the anchor rod is poor due to overlarge discreteness of the bearing capacity of the anchor rod is avoided; in addition, the slurry and the rib body are effectively guaranteed to have enough bonding strength, and the rib body is protected under the action of the slurry, so that the corrosion resistance of the rib body is improved.
Description
Technical Field
The utility model relates to a technical field of prestressed anchorage pole construction, in particular to prefabricated formula prestressed anchorage pole construction structures.
Background
In the field of civil construction engineering at home and abroad, the rock-soil anchoring technology taking the prestressed anchor rods as the core is widely applied, and is widely applied to projects such as slope management, foundation pit support, underground structure anti-floating, tunnel and underground cavern reinforcement, ground disaster management and the like; according to the structural principle, the prestressed anchor can be divided into two categories, namely a tension type and a pressure type.
At present, a tension anchor rod is formed by drilling, installing anchor bars and grouting in a stratum, and because impurities such as water, soil, rock debris, slurry and the like in a drilled hole are difficult to remove completely, the defects that mud residue or mud skin is easily attached to the surface of an anchor bar locally, no slurry is wrapped locally, mud blocks are mixed in slurry and the like are easily caused; and, the slurry is diluted, can't vibrate after slip casting to different extent by downthehole ponding, leads to the slurry actual strength lower, the slurry intensity is unstable to lead to the slurry to lower and unstable with the bonding strength of anchor bar, finally lead to the anchor bar to resist to pull off the bearing capacity lower and unstable, the discreteness is great, the anchor bar is easily corroded.
The end of the grouting pipe exceeds the inner anchor head, slurry flows around to the lower part of the inner anchor head during grouting and is blocked by the inner anchor head, and impurities such as accumulated water, soil, rock debris, slurry and the like below the inner anchor head are difficult to be removed and mixed in the slurry, so that the slurry strength below the inner anchor head is low and unstable, local compression damage is easy to cause, and the bearing capacity of the anchor rod is low and unstable; meanwhile, under the inner anchor head, the anchor bars are connected to the inner anchor head through the anchor clamps, and although the overall length of the anchor bars is wrapped by the isolation sleeve to form anticorrosion protection, the slurry quality under the anchor head is poor, so that the anchor clamps are difficult to form effective anticorrosion protection, and the pressure type anchor rod is large in bearing capacity discreteness and poor in anticorrosion performance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prefabricated formula prestressed anchorage pole construction structures aims at solving the not good problem of corrosion resisting property of prestressed anchorage pole among the prior art.
The utility model discloses a realize like this, prefabricated formula prestressed anchorage pole construction structures, including drilling and arrange the inside core of drilling in, the core includes many anchor bars, slurry and slip casting pipe, the one end embedding of anchor bar the slurry, the other end of anchor bar is towards deviating from the slurry direction extends to be arranged, the one end embedding of slip casting pipe the slurry, the slurry has and is close to the bottom at the bottom of the hole of drilling, the slip casting pipe runs through the bottom of slurry, the other end of slip casting pipe is towards deviating from the slurry direction extends to be arranged, the one end of anchor bar with the one end of slip casting pipe respectively with the slurry is fixed arrangement.
Furthermore, a plurality of anchor bars are circumferentially arranged at intervals along the grouting pipe.
Furthermore, the distance range between adjacent anchor bars is 10-60mm, and the diameter range of the anchor bars is 12-80 mm.
Furthermore, the anchor bar comprises an anchoring section and a free section, the anchoring section is located in the slurry, the free section is provided with an isolation sleeve, the isolation sleeve surrounds the free section, and the inner end of the isolation sleeve is embedded into the slurry.
Further, the range of embedding the inner end of the isolation sleeve into the slurry is 200 mm and 300 mm.
Furthermore, one end of the grouting pipe is embedded into the middle of the slurry, and the anchor bars are arranged around the circumference of the grouting pipe at intervals.
Furthermore, the prefabricated prestressed anchor rod construction structure comprises a formwork plate, each anchor rib and the grouting pipe are bound and relatively fixed, one end of each anchor rib and one end of the grouting pipe are respectively arranged in the formwork plate, and grouting and vibrating are carried out to form the core body; the diameter range of the core body is 60-150 mm.
Further, the outer surface of the slurry is provided with transverse ribs which are spirally arranged on the outer surface of the slurry in a surrounding manner.
Further, the transverse ribs are arranged in an inclined manner.
Further, the core includes the reinforcing bar net piece, the reinforcing bar net piece is in the thick liquids, the reinforcing bar net piece encloses to close and forms and encloses and close the space, many the anchor bars and the slip casting pipe all is in enclose and close the space.
Compared with the prior art, the prefabricated prestressed anchor rod construction structure provided by the utility model has the advantages that the core body is prefabricated in a factory or a construction site, the manufactured core body is arranged in the drill hole, and the grouting pipe is utilized for grouting to bond the slurry and the soil layer; due to the fact that the core body is prefabricated, the quality of slurry is effectively guaranteed, and the problem that the stability of the bearing capacity of the anchor rod is poor due to overlarge discreteness of the bearing capacity of the anchor rod is avoided; in addition, the slurry and the rib body are effectively guaranteed to have enough bonding strength, and the rib body is protected under the action of the slurry, so that the corrosion resistance of the rib body is improved.
Drawings
Fig. 1 is a schematic plan view of a prefabricated prestressed anchor construction structure provided by an embodiment of the present invention;
fig. 2 is a schematic sectional view of a portion a of a prefabricated prestressed anchor construction structure according to an embodiment of the present invention;
fig. 3 is a schematic construction plan view of a prefabricated prestressed anchor construction structure provided by an embodiment of the present invention;
fig. 4 is a schematic plan view of a prefabricated prestressed anchor construction structure provided by an embodiment of the present invention;
fig. 5 is a schematic B-section of a prefabricated prestressed anchor rod construction structure according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1-5, preferred embodiments of the present invention are provided.
The utility model provides a prefabricated formula prestressed anchorage pole construction structures for the bearing capacity of solving prestressed anchorage pole is low, unstable and the not good problem of corrosion resisting property.
Prefabricated formula prestressed anchorage pole construction structures, including drilling and core 10, inside drilling was arranged in to core 10, core 10 includes many anchor bars 11, slurry 12 and slip casting pipe 13, the one end embedding slurry 12 of anchor bar 11, the other end of anchor bar 11 is towards deviating from slurry 12 direction and extending to arrange, the one end embedding slurry 12 of slip casting pipe 13, slurry 12 has the bottom that is close to the hole bottom of drilling, slip casting pipe 13 runs through the bottom of slurry 12, the other end of slip casting pipe 13 is towards deviating from slurry 12 direction and extends to arrange, the one end of anchor bar 11 and the one end of slip casting pipe 13 are fixed arrangement with slurry 12 respectively.
In the prefabricated prestressed anchor rod construction structure, the core body 10 is prefabricated in a factory or a construction site, the manufactured core body 10 is placed in a drill hole, and grouting is performed by using the grouting pipe 13 to bond the slurry 12 with the soil layer 30; the core body 10 is prefabricated, so that the quality of the slurry 12 is effectively guaranteed, the problem that the stability of the bearing capacity of the anchor rod is poor due to overlarge discreteness of the bearing capacity of the anchor rod is avoided, and the integral bearing capacity is improved; in addition, the slurry 12 and the rib body are effectively guaranteed to have enough bonding strength, so that the rib body is more stable, and the rib body is protected under the action of the slurry 12, so that the corrosion resistance of the rib body is improved.
In this embodiment, only one anchor bar 11 may be adopted, and one or more anchor bars 11 are provided according to the designed bearing capacity of the anchor bar 11, so as to ensure the overall stability of the core body 10 and at the same time. The manufacturing cost is reduced.
The diameter of the drill hole is more than 40mm larger than that of the slurry 12, so that the slurry 12 can be conveniently placed in the drill hole, and the anchor rod can be conveniently installed.
The anchor bar 11 can be made of steel bars or steel strands, and the slurry 12 can be fine aggregate concrete, cement mortar or cement paste; low cost and high production speed.
A plurality of anchor bars 11 are circumferentially arranged at intervals along the grouting pipe 13; adopt many anchor bars 11 to make holistic anchor effect stronger, simultaneously, many anchor bars 11 interval arrangement make the whole anchor power of core 10 more even, and the atress of thick liquids 12 is even, provides the holding capacity of thick liquids 12.
The distance range of the adjacent anchor bars 11 is 10-60mm, so that the matching effect of each anchor bar 11 is better, and the sufficient anchoring effect is ensured.
The diameter range of the anchor bars 11 is 12-80 mm; the diameter range of the anchor bars 11 is determined according to the design bearing capacity of each anchor bar 11, and the distance between each anchor bar 11 is 10-60 mm; ensuring sufficient anchoring force.
The anchor bar 11 comprises an anchoring section and a free section, the anchoring section is positioned in the slurry 12, the free section is provided with an isolation sleeve 20, the isolation sleeve 20 surrounds the free section, and the inner end of the isolation sleeve 20 is embedded in the slurry 12; thereby reinforcing isolation sleeve 20's installation steadiness to, guarantee isolation sleeve 20 and protect the free section comprehensively, strengthen the corrosion resisting property of free section, improve the life of dowel 11.
In addition, when the grouting extends to the free section, the isolation grouting is performed under the action of the isolation sleeve 20, and the tensioning of the free section is ensured.
The range of embedding the inner end of the isolation sleeve 20 into the slurry 12 is 200 mm and 300 mm; avoid the waste of isolation sleeve 20, simultaneously, guarantee isolation sleeve 20's installation steadiness.
One end of the grouting pipe 13 is embedded in the middle of the grout 12, and each anchor bar 11 is arranged at intervals along the circumference of the grouting pipe 13; make the structure compacter to, when carrying out the slip casting through slip casting pipe 13, the grout of being convenient for evenly surrounds core 10, guarantees core 10 and soil layer 30's bonding effect.
The prefabricated prestressed anchor rod construction structure comprises template components, each anchor bar 11 and a grouting pipe 13 are bound and relatively fixed, one end of each anchor bar 11 and one end of each grouting pipe 13 are respectively arranged in the template components for grouting and vibrating to form a core body 10; the core body 10 is convenient to manufacture, and the core body 10 is prefabricated.
The diameter range of the core body 10 is 60-150 mm; the arrangement of each anchor bar 11 and the grouting pipe 13 is ensured, the core body 10 is ensured to be matched with the anchor rod to have a sufficient anti-deformation effect, and the anchoring effect is improved.
Furthermore, the outer surface of the slurry 12 is provided with stripes; the contact area between the slurry 12 and the soil layer 30 is enhanced, the bonding effect between the slurry 12 and the soil layer 30 is enhanced, and the anchoring effect of the core body 10 is improved.
The length range of the core 10 is 2-3 m, and the strength range of the slurry 12 is 20-50 MPa; ensuring adequate anchoring stability of the slurry 12.
A connecting channel is formed at the bottom of the slurry body 12, the connecting channel is communicated with the soil layer 30, and one end of the grouting pipe 13 is communicated with the connecting channel; and grouting is performed by the grouting pipe 13.
The outer surface of the slurry 12 is provided with transverse ribs 14, and the transverse ribs 14 are spirally arranged on the outer surface of the slurry 12 in a surrounding manner; under the action of the transverse ribs 14, the bonding strength of the grout 12 is enhanced, and the anchoring effect of the grout 12 is enhanced.
Moreover, the transverse ribs 14 are arranged in an inclined manner, so that the transverse area of the transverse ribs 14 is increased, and the bonding strength of the slurry 12 is improved.
The core body 10 comprises reinforcing steel bar meshes 15, the reinforcing steel bar meshes 15 are positioned in the slurry 12, the reinforcing steel bar meshes 15 are enclosed to form an enclosed space, and the plurality of anchor bars 11 and the grouting pipes 13 are positioned in the enclosed space; under the action of the reinforcing mesh 15, the crack generation of the slurry 12 is reduced, so that the corrosion resistance of the slurry 12 is enhanced, and the crack resistance protection is realized on the slurry 12.
Furthermore, a plurality of groups of horizontal strip groups are arranged on the outer surface of the reinforcing mesh 15, and the two groups of horizontal strip groups are symmetrically arranged along the center of the slurry; the horizontal bar group comprises a bar body which is horizontally arranged, one end of the bar body is connected with the outer surface of the reinforcing mesh sheet 15, and the other end of the bar body is abutted against the slurry 12; under the effect of the rod body, the steel bar mesh 15 is convenient to center, the installation of the steel bar mesh 15 is convenient, and the anti-crack protection effect of the steel bar mesh 15 is ensured.
One end of the rod body is movably connected with the outer surface of the reinforcing mesh piece 15, after the reinforcing mesh piece 15 is placed in the slurry 12, the rod body is swung, the other end of the rod body is enabled to be contradicted with the slurry 12, at the moment, the rod body is horizontally arranged, the reinforcing mesh piece 15 and the slurry 12 are relatively fixed, and when grouting is avoided, the reinforcing mesh piece 15 causes deviation, and the anti-crack protection effect of the reinforcing mesh piece 15 is influenced.
In addition, the form may not be removed and may serve as a protective jacket for the core 10, thereby enhancing the corrosion resistance of the core 10.
The material of the slurry 12 can be fine stone concrete or mortar, so that the bonding strength between the anchor bars and the slurry is enhanced, and the corrosion resistance is enhanced.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Prefabricated formula prestressed anchorage pole construction structures, its characterized in that, including drilling and arrange the inside core in drilling in, the core includes many anchor bars, slurry and slip casting pipe, the one end embedding of anchor bar the slurry, the other end of anchor bar is towards deviating from the slurry direction extends to be arranged, the one end embedding of slip casting pipe the slurry, the slurry has and is close to the bottom at the hole bottom of drilling, the slip casting pipe runs through the bottom of slurry, the other end of slip casting pipe is towards deviating from the slurry direction extends to be arranged, the one end of anchor bar with the one end of slip casting pipe respectively with the slurry is fixed arrangement.
2. The pre-fabricated pre-stressed anchor construction structure of claim 1, wherein a plurality of said anchor bars are circumferentially spaced around said grouting pipe.
3. The prefabricated prestressed anchor construction structure as claimed in claim 2, wherein the interval between adjacent said anchor bars is in the range of 10-60mm, and the diameter of said anchor bars is in the range of 12-80 mm.
4. The prefabricated prestressed anchor construction structure as claimed in any one of claims 1 to 3, wherein said anchor bar includes an anchoring section and a free section, said anchoring section is in said grout, said free section is provided with an isolation sleeve, said isolation sleeve surrounds said free section, and an inner end of said isolation sleeve is embedded in said grout.
5. The prefabricated prestressed anchor construction structure as claimed in claim 4, wherein the range of embedding the inner end of said isolation sleeve into said slurry is 200-300 mm.
6. The prefabricated prestressed anchor construction structure as claimed in any one of claims 1 to 3, wherein one end of said grouting pipe is embedded in the middle of said grout, and said anchor bars are circumferentially spaced along the circumference of said grouting pipe.
7. The pre-fabricated pre-stressed anchor construction structure as claimed in any one of claims 1 to 3, wherein the pre-fabricated pre-stressed anchor construction structure comprises a formwork member, each anchor bar and the grouting pipe are bound and fixed relatively, one end of each anchor bar and one end of the grouting pipe are respectively arranged in the formwork member, grouted and vibrated to form the core body; the diameter range of the core body is 60-150 mm.
8. The prefabricated prestressed anchor construction structure as claimed in any one of claims 1 to 3, wherein said outer surface of said slurry body is provided with a cross rib spirally arranged around said outer surface of said slurry body.
9. The prefabricated prestressed anchor construction structure as claimed in claim 8, wherein said cross-ribs are arranged in an inclined manner.
10. The prefabricated prestressed anchor construction structure as claimed in any one of claims 1 to 3, wherein said core includes a steel mesh, said steel mesh is located in said slurry, said steel mesh encloses to form an enclosure space, and a plurality of said anchor bars and said grouting pipes are located in said enclosure space.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920128725.7U CN209837018U (en) | 2019-01-24 | 2019-01-24 | Prefabricated prestressed anchor rod construction structure |
| JP2021600124U JP3235428U (en) | 2019-01-24 | 2019-11-19 | Prefabricated prestress anchor structure |
| PCT/CN2019/119338 WO2020151347A1 (en) | 2019-01-24 | 2019-11-19 | Prefabricated prestressed anchor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920128725.7U CN209837018U (en) | 2019-01-24 | 2019-01-24 | Prefabricated prestressed anchor rod construction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209837018U true CN209837018U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920128725.7U Active CN209837018U (en) | 2019-01-24 | 2019-01-24 | Prefabricated prestressed anchor rod construction structure |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3235428U (en) |
| CN (1) | CN209837018U (en) |
| WO (1) | WO2020151347A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024120158A1 (en) * | 2022-12-08 | 2024-06-13 | 中交第二公路勘察设计研究院有限公司 | Prefabricated tunnel prestressed anchor, production method and use method therefor |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945720A (en) * | 2020-08-31 | 2020-11-17 | 华侨大学 | Self-reducing guide cap and tension-compression composite anchor rod adopting same |
| CN111945719A (en) * | 2020-08-31 | 2020-11-17 | 华侨大学 | Quick-assembly type tension-compression composite anchor rod and construction method thereof |
| CN114046821B (en) * | 2021-11-10 | 2023-06-02 | 山东高速股份有限公司 | Prestressed beam grouting monitoring device and monitoring technology |
| CN114087000B (en) * | 2021-11-18 | 2023-08-04 | 甘肃公航旅永积高速公路项目管理有限公司 | Recoverable positioning grouting anchor pipe and positioning grouting anchoring method |
| CN114293567A (en) * | 2021-12-27 | 2022-04-08 | 北京建工四建工程建设有限公司 | Construction method for improving bearing capacity of natural foundation by embedding basic raft plates into slope protection piles |
| CN114737566A (en) * | 2022-05-12 | 2022-07-12 | 青岛理工大学 | Pre-tightening force applying device and method for large-diameter pre-tensioned glass fiber rib anti-floating anchor rod |
| CN115369870B (en) * | 2022-09-22 | 2023-08-01 | 中国五冶集团有限公司 | Post-cast anti-floating anchor rod |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2847043B2 (en) * | 1994-12-15 | 1999-01-13 | 黒沢建設株式会社 | Ground anchor method and its anchoring material |
| JP2005023662A (en) * | 2003-07-03 | 2005-01-27 | Kowa Sangyo Kk | Anchor, anchoring method and method of removing tendon for anchor |
| CN102605780B (en) * | 2012-04-17 | 2015-01-28 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN206928285U (en) * | 2017-06-14 | 2018-01-26 | 张智猷 | Prefabricated high-strength core body and pressure type anchor rod |
| CN109778850A (en) * | 2019-01-24 | 2019-05-21 | 深圳市工勘岩土技术有限公司 | Prefabricated prestressed anchor construction method |
-
2019
- 2019-01-24 CN CN201920128725.7U patent/CN209837018U/en active Active
- 2019-11-19 WO PCT/CN2019/119338 patent/WO2020151347A1/en active Application Filing
- 2019-11-19 JP JP2021600124U patent/JP3235428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024120158A1 (en) * | 2022-12-08 | 2024-06-13 | 中交第二公路勘察设计研究院有限公司 | Prefabricated tunnel prestressed anchor, production method and use method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020151347A1 (en) | 2020-07-30 |
| JP3235428U (en) | 2021-12-23 |
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