CN115324048A - Reinforcing structure for effectively improving drawing performance of anchor rod and construction method thereof - Google Patents
Reinforcing structure for effectively improving drawing performance of anchor rod and construction method thereof Download PDFInfo
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- CN115324048A CN115324048A CN202211036977.XA CN202211036977A CN115324048A CN 115324048 A CN115324048 A CN 115324048A CN 202211036977 A CN202211036977 A CN 202211036977A CN 115324048 A CN115324048 A CN 115324048A
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- hole
- stock
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 210000003205 muscle Anatomy 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000005728 strengthening Methods 0.000 claims abstract description 4
- 238000007569 slipcasting Methods 0.000 claims abstract description 3
- 239000004568 cement Substances 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 8
- 239000011083 cement mortar Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007596 consolidation process Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002019 doping agent Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 208000032825 Ring chromosome 2 syndrome Diseases 0.000 description 18
- 238000000034 method Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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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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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reinforcement Elements For Buildings (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a reinforcing structure for effectively improving the drawing performance of an anchor rod and a construction method thereof. This additional strengthening includes the stock in the stock hole, and the cover is equipped with first ring and second ring on the stock, is connected with between first ring and the second ring and strengthens the radiation muscle, and at least one in first ring and the second ring is fixed on the stock, and first ring, second ring and enhancement radiation muscle are located the reaming part in the stock hole, are equipped with the slip casting in stock hole and the reaming part. The construction method comprises the following steps: manufacturing an anchor rod; drilling an anchor hole; installing an anchor rod: placing an anchor rod into the anchor hole, clamping the second ring by the fixing piece, pushing the first ring by using the pushing piece, and extending the reinforced radiation ribs between the first ring and the second ring to the outer side to the hole expanding part after pushing; grouting anchor holes; and (6) tensioning the anchor rod. The invention has the beneficial effects that: when the anchor rods have the same length, compared with the traditional construction method, the pulling resistance is obviously improved; under the condition of increasing the same pulling resistance, the labor cost, the mechanical cost and the material cost can be saved.
Description
Technical Field
The invention belongs to the field of construction of deep foundation pits in constructional engineering, and particularly relates to a reinforcing structure for effectively improving the drawing performance of an anchor rod and a construction method thereof.
Background
At present, a common method for deep foundation pit supporting is to adopt a supporting pile structure, but if the depth of a foundation pit is too large, the surrounding soil layer is weak or other disadvantages exist, reinforcing and strengthening measures need to be added. One of the most applied methods at present is to add an anchor rod to a pile body for reinforcement. This practice has a limited pullout resistance per unit length of bolt, and only increases the bolt length to raise its upper limit. The method increases the consumption of materials such as reinforcing steel bars and cement, the depth of drilled holes, the soil output and the like, and cannot be lengthened due to the influence of the surrounding environment, so that the limitation is more.
Disclosure of Invention
The invention aims to: the reinforcing structure and the construction method thereof effectively improve the drawing performance of the anchor rod, and solve the problem that the drawing resistance of the anchor rod in unit length is limited.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an effectively improve anchor rod and draw additional strengthening of performance, includes the stock in the stock, and the cover is equipped with first ring and second ring on the stock, is connected with between first ring and the second ring and strengthens the radiation rib, strengthens the radiation rib including the part that extends to the outside, and at least one in first ring and the second ring is fixed on the stock, and first ring, second ring and enhancement radiation rib are located the reaming part in stock hole, are equipped with the slip casting in stock hole and the reaming part.
Furthermore, the reinforced radial ribs comprise parts bent and extended outwards, and a triangular structure is formed between the reinforced radial ribs and the anchor rod.
Furthermore, the reinforced radiating ribs form a 45-60-degree bent inner angle.
Furthermore, a fixing piece is fixed on the anchor rod and clamped at the front end of the second ring.
Further, the anchor rod is connected with the fixing piece in a welding mode.
Furthermore, the rear end of the anchor rod is anchored on a support pile, and a crown beam is arranged at the top of the support pile.
A construction method for effectively improving the drawing performance of an anchor rod comprises the following steps:
step S001, manufacturing an anchor rod: fixing a fixing piece on the anchor rod, wherein the position of the fixing piece on the anchor rod is matched with the position of the reaming part on the anchor hole, and sleeving the first ring and the second ring on the anchor rod;
step S002, drilling an anchor hole: performing hole forming operation on the anchor rod, performing hole expansion when the specified depth of the hole expansion part is reached, and then drilling to the designed depth of the anchor hole;
step S003, installing an anchor rod: placing the anchor rod into the anchor hole, clamping the second ring by the fixing piece, pushing the first ring by using the pushing piece, and extending the reinforced radial ribs between the first ring and the second ring to the hole expanding part outwards after pushing;
step S004, grouting anchor holes: grouting the anchor hole and the hole expanding part;
s005, tensioning the anchor rod;
the order of step S001 and step S002 may be reversed or performed simultaneously.
Further, in the step S003, the sleeve is sleeved on the anchor rod, the sleeve sleeved on the anchor rod is used to perform a pushing action on the first ring, and the sleeve is taken out after the pushing action is completed.
Further, in the step S003, the reinforcing radial rib between the first ring and the second ring is bent and extended outward after the pushing, and a triangular structure is formed between the reinforcing radial rib and the anchor rod.
Further, in the step S004, when cement slurry is adopted as the grouting liquid, the water-cement ratio is 0.55; when cement mortar is adopted, the water cement ratio is 0.45, the sand-lime ratio is 0.8-1.0, and medium coarse sand is selected as the mixing sand; the cement slurry or cement mortar is doped with an external doping agent which can improve the early strength or micro-expansion of a grouting consolidation body.
Further, in the step S005, after the strength of the anchor fixing body reaches 75% of the design strength and is not less than 15MPa, the anchor may be tensioned and locked.
The invention has the beneficial effects that:
1. compared with the traditional construction method, the invention has the advantage that the uplift resistance is obviously improved when the anchor rods have the same length.
2. Compared with the traditional construction method, the invention can save the labor, mechanical and material costs caused by a large amount of hole forming operation due to the increase of the length of the anchor rod under the condition of increasing the same pulling resistance.
3. Compared with the traditional construction method, the method can greatly reduce the earth volume excavated by increasing the length of the anchor rod in the traditional method under the condition of increasing the same pulling resistance, saves the cost of manpower, machinery and the like for excavating, transporting outwards and cleaning the part of earth volume, and is favorable for environmental protection work.
4. The invention can shorten the length of the anchor rod, save a large amount of work and effectively shorten the construction period while achieving the same anti-pulling performance as the traditional construction method.
5. The invention is not limited by the length of the anchor rod, can be constructed in limited length, is less influenced by the surrounding environment, and is suitable for more scenes.
6. The invention can be used singly or in a way of overlapping two parts. The first reinforcing structure is placed in place in advance, and the anchor rod is sleeved in the subsequent reinforcing structure for installation after the first reinforcing structure is pushed. The hole expanding and the adjustment of the inner hole diameters of the first ring and the second ring corresponding to the reinforcing structure are matched with the size of the fixing piece according to the above matters. In the same way, more than two reinforcing structures can be added, so that the upper limit of the uplift resistance of the anchor rod can be obviously improved in limited length.
7. The invention has reliable construction quality, can greatly improve the safety performance of the deep foundation pit structure and reduce potential safety hazards.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the present invention, the selection (each non-conflicting selection) and the other selections can be freely combined. The skilled person will understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the present invention, and the present invention is not exhaustive.
Drawings
FIG. 1 is a front view of the structure of the reinforcement structure of the present invention.
Figure 2 is a structural side view of the reinforcing structure of the present invention.
FIG. 3 is a schematic illustration of the placement of the present invention in place.
FIG. 4 is a schematic diagram (front view) of the pushing in place of the construction method of the present invention.
FIG. 5 is a schematic top-in-place view (side view) of the construction method of the present invention.
Figure 6 is a schematic illustration of a single use of the reinforcing structure of the present invention.
FIG. 7 is a schematic view of the multiple overlapping applications of the reinforcement structure of the present invention.
In the figure: 1-a first ring, 2-a second ring, 3-a reinforcing radial rib, 4-an anchor rod, 5-a fixing piece, 6-a crown beam, 7-a support pile, 8-an anchor hole, 9-a reaming part and 10-grouting.
Detailed Description
The invention is further described below with reference to specific embodiments and the accompanying drawings.
Example 1
Referring to fig. 1 to 7, a reinforcing structure for effectively improving the drawing performance of an anchor rod includes a first ring 1, a second ring 2, reinforcing radial ribs 3, an anchor rod 4, a fixing member 5, a crown beam 6, a support pile 7, an anchor hole 8, a hole expanding portion 9, and a grouting 10.
The first ring 1 and the second ring 2 at two ends and eight reinforcing radial ribs 3 in the middle form the main part of the reinforcing structure. The first ring 1 and the second ring 2 are made of carbon steel, and the inner aperture is larger than or equal to the diameter of the anchor rod plus 6mm, so that the anchor rod 4 can be conveniently sleeved. The length of the reinforced radiating rib 3 is 600mm, and a smooth round rib with the diameter of 8-18 mm is adopted.
The reinforcing radial rib 3 comprises a part extending towards the outside, the middle part of the reinforcing steel bar is bent for 15 degrees before being sleeved, the reinforcing steel bar is guided to be pushed and formed when being installed, after the reinforcing steel bar is pushed, a 45-60-degree bent inner angle is formed, a triangular structure is formed between the reinforcing radial rib 3 and the anchor rod 4, and the action surface of drawing force is enlarged. The outward extending portion of the reinforcing radiating rib 3 may be designed to have other structures such as a curved shape or a corrugated shape.
Strengthen 3 one end of radiation muscle and be connected with first ring 1, the other end is connected with second ring 2, and the connected mode is the welding. Thickness of first ring 1 and second ring 2: when 8mm is selected, the diameter range of the applicable reinforced radial rib 3 is 8-12 mm; when 12mm is selected, the diameter range of the suitable reinforced radiating rib 3 is 14-18 mm. The length and diameter of the reinforcing radial ribs 3 can be increased appropriately in special cases, but when the diameter is increased, the thicknesses of the first ring 1 and the second ring 2 are correspondingly matched and increased.
At least one of the first ring 1 and the second ring 2 is fixed on the anchor rod 4, so as to support the anchor rod 4, and the second ring 2 is fixed by adopting the blocking function of the fixing piece 5 in the embodiment. Simultaneously, the fixing of first ring 1 and second ring 2 on stock 4 also can adopt the inside card that stretches out of stock 4 to establish or keep off and establish the structure and realize the ring effect, also can adopt the inside card that stretches out of first ring 1 and second ring 2 to establish or keep off and establish the structure and realize the stock 4 effect.
When the anchor rod 4 is manufactured, the fixing piece 5 and the anchor rod 4 are firmly welded. The fixing piece 5 is made of carbon steel, the thickness of the fixing piece is the same as that of the second ring 2, the diameter of the fixing piece 5 is larger than or equal to the inner diameter of the second ring and is greater than or equal to +6mm, the fixing piece 5 is clamped at the front end of the second ring 2, the second ring 2 is convenient to fix on the anchor rod 4, and when deformation occurs in foundation pit supporting and the anchor rod receives the drawing force towards the inner side of the foundation pit, the resistance provided by the reinforcing structure is transmitted to the anchor rod body, so that the aim of increasing the drawing force is fulfilled.
The anchor rod 4 is arranged in the anchor hole 8, the first ring 1, the second ring 2 and the reinforcing radial ribs 3 are located in a hole expanding part 9 of the anchor hole 8, grouting 10 is arranged in the anchor hole 8 and the hole expanding part 9, and the integral structure is poured into a whole by utilizing the grouting 10. The rear end of the anchor rod 4 is anchored on the support pile 7, and the top of the support pile 7 is provided with the crown beam 6, so that the anchoring and reinforcing effects of the anchor rod 4 on the support pile 7 are realized.
Example 2
Referring to fig. 1 to 7, a construction method for effectively improving the drawing performance of an anchor rod includes the following steps.
Step S001, manufacturing an anchor rod 4: the anchor rod 4 is welded with the fixing member 5, the position of the fixing member 5 on the anchor rod 4 is matched with the position of the reaming part 9 on the anchor hole 8, and the first ring 1 and the second ring 2 are sleeved on the anchor rod 4 and are arranged in place.
Step S002, drilling an anchor hole 8: and (4) performing hole forming operation on the anchor rod 4, reaming when the specified depth of the reaming part 9 is reached, and drilling to the designed depth of the anchor hole 8. The sequence of step S001 and step S002 may be reversed or performed simultaneously to satisfy different construction conditions. In the embodiment, the anchor rod is manufactured firstly and then the anchor hole is drilled, and the anchor rod is immediately placed after the hole forming is finished so as to avoid hole collapse caused by too long time.
Step S003, mounting the anchor 4: the anchor rod 4 is placed into the anchor hole 8, the second ring 2 is clamped by the fixing piece 5, the sleeve is sleeved on the anchor rod 4, the sleeve sleeved on the anchor rod 4 is utilized to perform the pushing action on the first ring 1, the diameter of the sleeve is larger than or equal to the diameter of the anchor rod +2mm and smaller than or equal to the diameter of the first ring-2 mm, the pushing is started after the sleeve is placed in place and is in contact with the first ring 1, and the sleeve is taken out after the pushing is completed.
After the top pushing, the reinforced radial ribs 3 between the first ring 1 and the second ring 2 extend outwards to the hole expanding part 9, the middle part of the reinforced radial ribs 3 is bent to 45-60 degrees, and the reinforced radial ribs 3 and the cross sections of the reinforcing steel bars of the anchor rods 4 are triangular. After the grouting 10 is solidified, the stress is stable, the formed structure is enlarged to act on the soil body, and the anti-pulling force of the anchor rod can be effectively increased.
Step S004, grouting anchor holes 8: after the anchor rod 4 is installed, grouting 10 is poured into the anchor hole 8 and the hole expanding part 9. When the grouting liquid adopts cement paste, the water cement ratio is 0.55; when cement mortar is adopted, the water cement ratio is 0.45, the lime-sand ratio is 0.8-1.0, and medium coarse sand is selected as the mixing sand; the cement slurry or cement mortar is doped with an external additive capable of improving the early strength or micro-expansion of a grouting consolidation body, and the doping amount is determined according to indoor tests. The grouting should be stopped after the cement grout overflows from the orifice, and after the grouting, when the grout level drops, the orifice grouting should be carried out.
Step S005, tensioning the anchor rod 4: when the strength of the anchor rod consolidation body reaches 75% of the design strength and is not less than 15MPa, the anchor rod 4 can be tensioned and locked.
The reinforcing structure obtained by the construction method can obviously improve the drawing performance of the anchor rod, effectively reduce the deformation of the foundation pit and further eliminate the potential safety hazard of the deep foundation pit. The invention adopts the local increase of the cross section area of the anchor rod hole, and is matched with a special reinforcing structure and grouting, under the condition of improving the same drawing force, compared with the traditional method, the invention can greatly reduce the mechanical cost, the labor cost, the material cost and the hole digging and soil output amount for increasing the anchor rod, shorten the construction period and is slightly influenced by the surrounding environment of the engineering. Overall, be favorable to engineering cost control, safety control, progress management and energy-concerving and environment-protective work.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be arbitrarily combined with any other basic example and selection example.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an effectively improve additional strengthening of stock drawing performance, includes stock (4) in anchor eye (8), its characterized in that: stock (4) on the cover be equipped with first ring (1) and the second ring (2), be connected with between first ring (1) and the second ring (2) and strengthen radiation muscle (3), strengthen radiation muscle (3) including the part that extends to the outside, at least one in first ring (1) and the second ring (2) is fixed on stock (4), first ring (1), the second ring (2) and strengthen radiation muscle (3) and be located reaming part (9) of anchor eye (8), be equipped with slip casting (10) in anchor eye (8) and reaming part (9).
2. The reinforcing structure for effectively improving the drawing performance of the anchor rod according to claim 1, characterized in that: the reinforced radial ribs (3) comprise parts bent and extended towards the outer side, and a triangular structure is formed between the reinforced radial ribs (3) and the anchor rod (4).
3. The reinforcing structure for effectively improving the drawing performance of the anchor rod according to claim 2, wherein: the reinforced radiating ribs (3) form a 45-60-degree bent inner angle.
4. The reinforcing structure for effectively improving the drawing performance of the anchor rod according to claim 1, wherein: the anchor rod (4) is fixed with a fixing piece (5), and the fixing piece (5) is clamped at the front end of the second ring (2).
5. The reinforcing structure for effectively improving the drawing performance of the anchor rod according to claim 1, characterized in that: the rear end of the anchor rod (4) is anchored on a support pile (7), and a crown beam (6) is arranged at the top of the support pile (7).
6. A construction method for effectively improving the drawing performance of an anchor rod is characterized by comprising the following steps:
step S001, manufacturing an anchor rod (4): a fixing piece (5) is fixed on the anchor rod (4), the position of the fixing piece (5) on the anchor rod (4) is matched with the position of the chambering part (9) on the anchor hole (8), and the first ring (1) and the second ring (2) are sleeved on the anchor rod (4);
step S002, drilling an anchor hole (8): performing hole forming operation on the anchor rod (4), performing hole expansion when the specified depth of the hole expansion part (9) is reached, and drilling to the design depth of the anchor hole (8);
step S003, installing the anchor rod (4): the anchor rod (4) is placed into the anchor hole (8), the second ring (2) is clamped by the fixing piece (5), the first ring (1) is pushed by the pushing piece, and the reinforced radial ribs (3) between the first ring (1) and the second ring (2) extend to the hole expanding part (9) outwards after pushing;
step S004, grouting an anchor hole (8): grouting (10) into the anchor hole (8) and the hole-expanding part (9);
s005, tensioning the anchor rod (4);
the order of step S001 and step S002 may be reversed or performed simultaneously.
7. The construction method for effectively improving the drawing performance of the anchor rod according to claim 6, wherein: in the step S003, the sleeve is sleeved on the anchor rod (4), the sleeve sleeved on the anchor rod (4) is used for pushing the first ring (1), and the sleeve is taken out after pushing is finished.
8. The construction method for effectively improving the drawing performance of the anchor rod according to claim 6, wherein: in the step S003, the reinforced radial ribs (3) between the first ring (1) and the second ring (2) are bent and extended outward after pushing, and a triangular structure is formed between the reinforced radial ribs (3) and the anchor rod (4).
9. The construction method for effectively improving the drawing performance of the anchor rod according to claim 6, wherein: in the step S004, when the grouting liquid adopts cement paste, the water cement ratio is 0.55; when cement mortar is adopted, the water cement ratio is 0.45, the lime-sand ratio is 0.8-1.0, and medium coarse sand is selected as the mixing sand; the cement slurry or cement mortar is doped with an external doping agent which can improve the early strength or micro-expansion of a grouting consolidation body.
10. The construction method for effectively improving the drawing performance of the anchor rod according to claim 6, wherein: in the step S005, when the strength of the anchor rod-fixed body reaches 75% of the design strength and is not less than 15MPa, the anchor rod (4) may be tensioned and locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036977.XA CN115324048A (en) | 2022-08-25 | 2022-08-25 | Reinforcing structure for effectively improving drawing performance of anchor rod and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036977.XA CN115324048A (en) | 2022-08-25 | 2022-08-25 | Reinforcing structure for effectively improving drawing performance of anchor rod and construction method thereof |
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| CN115324048A true CN115324048A (en) | 2022-11-11 |
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| CN202211036977.XA Pending CN115324048A (en) | 2022-08-25 | 2022-08-25 | Reinforcing structure for effectively improving drawing performance of anchor rod and construction method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202139588U (en) * | 2011-06-18 | 2012-02-08 | 山东大学 | Novel self-broaching anchor rod |
| CN103741687A (en) * | 2014-01-27 | 2014-04-23 | 北方工业大学 | Reaming pressure dispersion type anchor rod |
| CN204780901U (en) * | 2015-07-20 | 2015-11-18 | 重庆格构建筑技术开发有限公司 | Enlarged footing stock |
| CN106193030A (en) * | 2016-07-11 | 2016-12-07 | 中天建设集团有限公司 | The prestressing force grouted anchor bar of a kind of band agnail head and construction method |
| CN107989037A (en) * | 2018-01-17 | 2018-05-04 | 上海智平基础工程有限公司 | A kind of enlarged footing anchor structure |
| CN109629564A (en) * | 2018-12-19 | 2019-04-16 | 成都四海岩土工程有限公司 | A kind of extruding hole reaming of anchor rod and construction method |
| KR102063040B1 (en) * | 2018-10-05 | 2020-01-07 | 주식회사 정원지오텍 | Hubrid permanent anchor structure and Earth anchor method using the same |
| CN211256973U (en) * | 2019-07-08 | 2020-08-14 | 江苏筑岩建设有限公司 | High-pressure injection enlarged footing mechanical anchor rod |
-
2022
- 2022-08-25 CN CN202211036977.XA patent/CN115324048A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202139588U (en) * | 2011-06-18 | 2012-02-08 | 山东大学 | Novel self-broaching anchor rod |
| CN103741687A (en) * | 2014-01-27 | 2014-04-23 | 北方工业大学 | Reaming pressure dispersion type anchor rod |
| CN204780901U (en) * | 2015-07-20 | 2015-11-18 | 重庆格构建筑技术开发有限公司 | Enlarged footing stock |
| CN106193030A (en) * | 2016-07-11 | 2016-12-07 | 中天建设集团有限公司 | The prestressing force grouted anchor bar of a kind of band agnail head and construction method |
| CN107989037A (en) * | 2018-01-17 | 2018-05-04 | 上海智平基础工程有限公司 | A kind of enlarged footing anchor structure |
| KR102063040B1 (en) * | 2018-10-05 | 2020-01-07 | 주식회사 정원지오텍 | Hubrid permanent anchor structure and Earth anchor method using the same |
| CN109629564A (en) * | 2018-12-19 | 2019-04-16 | 成都四海岩土工程有限公司 | A kind of extruding hole reaming of anchor rod and construction method |
| CN211256973U (en) * | 2019-07-08 | 2020-08-14 | 江苏筑岩建设有限公司 | High-pressure injection enlarged footing mechanical anchor rod |
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