CN211472481U - Combined enhanced uplift anchor rod device - Google Patents
Combined enhanced uplift anchor rod device Download PDFInfo
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- CN211472481U CN211472481U CN201922077389.0U CN201922077389U CN211472481U CN 211472481 U CN211472481 U CN 211472481U CN 201922077389 U CN201922077389 U CN 201922077389U CN 211472481 U CN211472481 U CN 211472481U
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- end plate
- concrete precast
- precast pile
- pile body
- anchor rod
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- 239000004567 concrete Substances 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000011083 cement mortar Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004873 anchoring Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 4
- 239000011241 protective layer Substances 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012372 quality testing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to the technical field of the building technique and specifically relates to a combination enhancement mode resistance to plucking stock device is related to, but wide application in building (structure) building, utility tunnel, underground works basis are anti superficial, also can be applied to foundation ditch and side slope fender engineering. The utility model respectively fixes the positioning support at the upper end plate and the lower end plate of the concrete precast pile body, and arranges the core pipe at the positioning hole of the positioning support, and arranges a plurality of rod ribs into the core pipe; the concrete precast pile is constructed by adopting a static pressure or hammering method, zero emission is realized in the construction process, the quality of the concrete pile body and the composite anchoring body is stable and reliable, the construction efficiency is high, the operation is convenient, the single uplift bearing capacity is high, the site traffic is convenient and fast, and the comprehensive cost is saved; the concrete precast pile is not only a bearing body of the composite anchor rod, but also a protective layer of the rod rib, so that the rod rib can be effectively protected from being corroded by corrosive media in underground water and soil, and the durability of the anchoring body is improved; the bar reinforcement can be tensioned to apply prestress according to needs.
Description
Technical Field
The utility model belongs to the technical field of the building technique and specifically relates to a combination enhancement mode resistance to plucking stock device is related to, but wide application in building (structure) building, utility tunnel, underground works basis are anti superficial, also can be applied to foundation ditch and side slope fender engineering.
Background
In recent years, with the rapid development of urban construction, the burial depth of the building foundation is continuously increased, and the anti-floating problem becomes more and more prominent. At present, measures for solving the anti-floating problem of the foundation of the underground structure mainly comprise a water buoyancy releasing method, a counterweight increasing method and the arrangement of anti-floating components such as anti-pulling piles or anti-floating anchor rods. The method is a common method for solving the problems of anti-floating and anti-pulling of the foundation of the underground structure. However, in the working state of the common uplift pile and the floating anchor rod, the pile body concrete or the grouting body is in a tensile state. Because the tensile strength of the concrete or the grouting body is low, when the concrete or the grouting body of the anchor rod is pulled, the concrete or the grouting body of the anchor rod cracks, the reinforcing steel bars of the pile body or the reinforcing steel bars of the anchor rod are corroded by underground water, the reinforcing steel bars are corroded gradually, and finally the reinforcing steel bars fail, so that the anti-floating component is damaged.
Currently, the engineering community addresses such problems in general from several aspects. First aspect changes the stress state of uplift pile and anti-floating anchor rod, makes the stress state of pile or anchor rod change into the pressurized by drawing, alright like this with effectively reducing fissured appearance to can improve the life of bar muscle. In the second aspect, the reinforcing steel bars are subjected to corrosion prevention treatment or added with protective measures, so that the service life of the reinforcing steel bars can be prolonged. And in the third aspect, the reinforcing steel bar amount of the uplift pile and the anti-floating anchor rod is increased, and the crack width is controlled, but the strength of the reinforcing steel bar cannot be fully exerted by the method, so that the steel is greatly wasted.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a combination enhancement mode resistance to plucking stock device to solve the technical problem who exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the utility model provides a combination enhancement mode resistance to plucking stock device, it includes:
the concrete precast pile body is provided with an upper end plate and a lower end plate;
the positioning supports are cross centering supports, a positioning hole is formed in the center of each positioning support, one positioning support is fixed on the lower surface of the upper end plate of the concrete precast pile body, and the other positioning support is fixed on the upper surface of the lower end plate of the concrete precast pile body;
the lower end of the core pipe is arranged in a positioning hole of the positioning support at the lower end plate in a penetrating mode, the upper end of the core pipe is arranged in a positioning hole of the positioning support at the upper end plate in a penetrating mode, and the upper end of the core pipe penetrates through the positioning hole to form an exposed section;
the rod ribs are arranged in the core pipe in a penetrating mode, and grouting bodies are respectively poured into the interior of the concrete precast pile body and the interior of the core pipe.
As a further technical scheme, the upper end plate and the lower end plate of the concrete precast pile body are respectively welded or bonded with the positioning support.
As a further technical scheme, the diameter of the concrete precast pile body is 300mm-1000 mm.
As a further technical scheme, the core pipe is a hard plastic pipe or a welded steel pipe for low-pressure fluid conveying.
As a further aspect, the bar comprises: steel strands or rebars.
As a further technical scheme, the water-cement ratio of the grouting body is 0.5-0.7.
As a further aspect, the grout body comprises: cement paste or cement mortar.
In a second aspect, the present invention further provides a construction method according to the combined enhanced uplift anchor device, which includes the following steps:
s1, reasonably configuring the pile length of the concrete precast pile according to the calculated bearing capacity, respectively fixing a positioning bracket at the upper end plate and the lower end plate of each concrete precast pile body, arranging a core tube in a positioning hole of the positioning bracket, plugging the bottom of the concrete precast pile body by cement mortar or pea stone concrete, and performing waterproof and anticorrosion treatment;
s2, performing concrete precast pile construction by adopting a static pressure or hammering method, adopting a multi-section pile, and paying attention to the waterproof and anticorrosion work of the pile joint;
s3, after the precast concrete pile body is driven, reserving the distance between the pile top and the bottom of the raft plate to be 100-150 mm, excavating soil body in the range, backfilling loose sand materials to reduce stress concentration of the pile top, and placing a plurality of rod ribs into the core pipe;
s4, pouring cement paste or cement mortar into the interior of the concrete precast pile body;
and S5, maintaining and quality testing, and after the slurry strength is formed, carrying out bearing capacity testing on the obtained uplift anchor rod device.
As a further technical scheme, the concrete precast pile is selected as a single-section precast pile.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
firstly, the construction period can be greatly saved compared with the traditional anchor rod, the construction efficiency is high, no slurry is discharged in the construction process, and no pollution is caused to the environment;
secondly, compared with the traditional anchor rod design, the space can be greatly increased and is generally about 4000mm, so that great convenience is brought to traffic passing of subsequent construction sites, and the defect of compact site pit and groove construction surface is avoided;
third, more traditional uplift pile can save the trouble of pore-forming, processing steel reinforcement cage, picking the pile head, and traditional uplift pile requires must imbed the certain thickness of raft, and this will bring a great deal of disadvantages for follow-up soleplate waterproof layer construction. The anchor rod can successfully solve the problems;
fourthly, compared with the traditional anchor rod, the uplift bearing capacity is improved, the single-component manufacturing cost is greatly saved compared with the traditional anchor rod and uplift pile, and the manufacturing cost is only 30-40% of that of the traditional method;
fifthly, compared with the traditional anchor rod, the defects of mud skin and hole wall looseness and the like caused by hole forming are overcome, so that the side wall soil pressure is fully exerted;
and sixthly, the defect that the durability of the traditional anchor rod and uplift pile is insufficient is effectively overcome. More engineering practice feedbacks of the traditional steel bar anchor rod and the uplift pile are that the steel bar is corroded due to cracking of an anchoring body and a pile body in the service life, so that the bearing capacity of the steel bar is lost, and finally, a bottom plate is cracked and leaks water. At present, relevant specifications and standards are not satisfactory to anti-floating design concepts and methods, but the practice of the product of the patent effectively solves the problem of durability of the anchor rod, and lays a solid foundation for the engineering quality of the project.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a combined enhanced uplift anchor rod device provided by an embodiment of the present invention;
fig. 2 is a top view of the combined enhanced uplift anchor device provided by the embodiment of the invention.
Icon: 1-basic raft; 2-a sand filling layer; 3-positioning the bracket; 4-prefabricating a pile body by concrete; 5-grouting; 6-pile bottom plugging; 7-upper end plate; 8-bar reinforcement; 9-a lower end plate; 10-core tube.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Example one
Referring to fig. 1 to 2, in one embodiment, a combination reinforced type uplift anchor device is provided, which includes: the concrete precast pile comprises a concrete precast pile body 4, a positioning support 3, a core pipe 10 and a plurality of rod ribs 8; the concrete precast pile body 4 is provided with an upper end plate 7 and a lower end plate 9; the positioning supports 3 are cross centering supports, a positioning hole (for installing a core pipe 10) is formed in the center of each positioning support 3, one positioning support 3 is fixed on the lower surface of an upper end plate 7 of the concrete precast pile body 4 (located inside the concrete precast pile body 4), and the other positioning support 3 is fixed on the upper surface of a lower end plate 9 of the concrete precast pile body 4 (located inside the concrete precast pile body 4); the lower end of the core tube 10 is arranged in the positioning hole of the positioning support 3 at the lower end plate 9 in a penetrating manner, the upper end of the core tube 10 is arranged in the positioning hole of the positioning support 3 at the upper end plate 7 in a penetrating manner, and the upper end of the core tube 10 passes through the positioning hole to form an exposed section (which can be flexibly arranged); the rod bar 8 is arranged in the core pipe 10 in a penetrating way, and the concrete precast pile body 4 and the core pipe 10 are respectively filled with grouting bodies. This application is through the 8 modes of back implantation pole muscle, and the pole muscle 8 that has direction core pipe 10 is planted in the precast concrete pile body, and wherein the pile body is annotated with the grout. According to the actual situation, the device can be made into a free section and a non-free section. The composite anchor rod improves the stress mode of the rod body, protects the stress rod rib 8, increases the durability of the composite anchor rod, and simultaneously has the advantages of high construction speed, high bearing capacity, low engineering cost and the like.
In this embodiment, as a further technical scheme, the positioning bracket 3 is welded or bonded to the upper end plate 7 and the lower end plate 9 of the concrete precast pile body 4, which is convenient to install.
In this embodiment, as a further technical solution, the diameter of the concrete precast pile body 4 is 300mm-1000mm, so as to be better used as a supporting body.
In this embodiment, as a further technical solution, the core tube 10 is a hard plastic tube or a welded steel tube for low-pressure fluid transportation, and has convenient material selection, and durable and firm structure.
In this embodiment, as a further technical solution, the bar 8 includes: steel strands or rebars.
In the embodiment, as a further technical scheme, the water cement ratio of the grouting body is 0.5-0.7.
Preferably, the slip 5 comprises: cement paste or cement mortar.
In the embodiment, the concrete precast pile is constructed by adopting a static pressure or hammering method, zero emission is realized in the construction process, the quality of the concrete pile body and the composite anchoring body is stable and reliable, the construction efficiency is high, the operation is convenient, the single uplift resistance bearing capacity is high, the site traffic is convenient, and the comprehensive cost is saved; the concrete precast pile is not only a bearing body of the composite anchor rod, but also a protective layer of the rod rib 8, so that the rod rib 8 can be effectively protected from being corroded by corrosive media in underground water and soil, and the durability of the anchoring body is improved; the bar reinforcement 8 can be tensioned to apply prestress according to needs.
Example two
The second embodiment further provides a construction method of the combined reinforced type uplift anchor rod device according to the first embodiment, which includes the following steps:
s1, reasonably configuring the pile length of the concrete precast pile according to the calculated bearing capacity, preferably selecting a single precast pile, respectively fixing a positioning support 3 at the upper end plate 7 and the lower end plate 9 of each concrete precast pile body 4 (the upper end plate 7 and the lower end plate 9 of the concrete precast pile body 4 are respectively welded or bonded with the positioning support 3), arranging a core pipe 10 in a positioning hole of the positioning support 3 (the core pipe 10 is a hard plastic pipe or a welding steel pipe for low-pressure fluid conveying), plugging the bottom of the concrete precast pile body 4 by cement mortar or pea stone concrete (forming a pile bottom plugging 6), and performing waterproof and anticorrosion treatment;
s2, performing concrete precast pile construction by adopting a static pressure or hammering method, adopting a multi-section pile, and paying attention to the waterproof and anticorrosion work of the pile joint;
s3, after the precast concrete pile body 4 is driven, reserving the distance between the pile top and the bottom of the basic raft board 1 to be 100-150 mm, excavating soil body in the range, backfilling loose sand materials (forming a sand filling layer 2) to reduce stress concentration of the pile top, and arranging a plurality of rod ribs 8 into the core pipe 10;
s4, pouring cement paste or cement mortar into the interior of the concrete precast pile body 4 (the water cement ratio of the cement paste is 0.5-0.7);
and S5, maintaining and quality testing, and after the slurry strength is formed, carrying out bearing capacity testing on the obtained uplift anchor rod device.
In summary, the present embodiment has the following beneficial effects:
firstly, the construction period can be greatly saved compared with the traditional anchor rod, the construction efficiency is high, no slurry is discharged in the construction process, and no pollution is caused to the environment;
secondly, compared with the traditional anchor rod design, the space can be greatly increased and is generally about 4000mm, so that great convenience is brought to traffic passing of subsequent construction sites, and the defect of compact site pit and groove construction surface is avoided;
third, more traditional uplift pile can save the trouble of pore-forming, processing steel reinforcement cage, picking the pile head, and traditional uplift pile requires must imbed the certain thickness of raft, and this will bring a great deal of disadvantages for follow-up soleplate waterproof layer construction. The anchor rod can successfully solve the problems;
fourthly, compared with the traditional anchor rod, the uplift bearing capacity is improved, the single-component manufacturing cost is greatly saved compared with the traditional anchor rod and uplift pile, and the manufacturing cost is only 30-40% of that of the traditional method;
fifthly, compared with the traditional anchor rod, the defects of mud skin and hole wall looseness and the like caused by hole forming are overcome, so that the side wall soil pressure is fully exerted;
and sixthly, the defect that the durability of the traditional anchor rod and uplift pile is insufficient is effectively overcome. More engineering practice feedbacks of the traditional steel bar anchor rod and the uplift pile are that the steel bar is corroded due to cracking of an anchoring body and a pile body in the service life, so that the bearing capacity of the steel bar is lost, and finally, a bottom plate is cracked and leaks water. At present, relevant specifications and standards are not satisfactory to anti-floating design concepts and methods, but the practice of the product of the patent effectively solves the problem of durability of the anchor rod, and lays a solid foundation for the engineering quality of the project.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a combination enhancement mode resistance to plucking stock device which characterized in that includes:
the concrete precast pile body is provided with an upper end plate and a lower end plate;
the positioning supports are cross centering supports, a positioning hole is formed in the center of each positioning support, one positioning support is fixed on the lower surface of the upper end plate of the concrete precast pile body, and the other positioning support is fixed on the upper surface of the lower end plate of the concrete precast pile body;
the lower end of the core pipe is arranged in a positioning hole of the positioning support at the lower end plate in a penetrating mode, the upper end of the core pipe is arranged in a positioning hole of the positioning support at the upper end plate in a penetrating mode, and the upper end of the core pipe penetrates through the positioning hole to form an exposed section;
the rod ribs are arranged in the core pipe in a penetrating mode, and grouting bodies are respectively poured into the interior of the concrete precast pile body and the interior of the core pipe.
2. The combination reinforced type uplift anchor rod device according to claim 1, wherein the positioning brackets are welded or bonded to the upper end plate and the lower end plate of the concrete precast pile body respectively.
3. The combination reinforced uplift anchor rod device according to claim 2, wherein the diameter of the concrete precast pile body is 300mm-1000 mm.
4. The combination reinforced anti-draft anchor rod device according to claim 1, wherein the core tube is a rigid plastic tube or a welded steel tube for low pressure fluid transfer.
5. The combination reinforced uplift anchor device according to claim 1, wherein the bar comprises: steel strands or rebars.
6. The combination reinforced uplift bolt device according to claim 1, wherein the grouting body comprises: cement paste or cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922077389.0U CN211472481U (en) | 2019-11-27 | 2019-11-27 | Combined enhanced uplift anchor rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922077389.0U CN211472481U (en) | 2019-11-27 | 2019-11-27 | Combined enhanced uplift anchor rod device |
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| Publication Number | Publication Date |
|---|---|
| CN211472481U true CN211472481U (en) | 2020-09-11 |
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|---|---|---|---|
| CN201922077389.0U Expired - Fee Related CN211472481U (en) | 2019-11-27 | 2019-11-27 | Combined enhanced uplift anchor rod device |
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| Country | Link |
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| CN (1) | CN211472481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847167A (en) * | 2019-11-27 | 2020-02-28 | 研建创科(北京)科技有限公司 | Combined enhanced uplift anchor rod device and construction method |
| CN116556323A (en) * | 2023-07-10 | 2023-08-08 | 中国建筑第六工程局有限公司 | Underground station bottom plate adjustable uplift pile adopting cover-excavation method and construction method |
-
2019
- 2019-11-27 CN CN201922077389.0U patent/CN211472481U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847167A (en) * | 2019-11-27 | 2020-02-28 | 研建创科(北京)科技有限公司 | Combined enhanced uplift anchor rod device and construction method |
| CN116556323A (en) * | 2023-07-10 | 2023-08-08 | 中国建筑第六工程局有限公司 | Underground station bottom plate adjustable uplift pile adopting cover-excavation method and construction method |
| CN116556323B (en) * | 2023-07-10 | 2023-10-10 | 中国建筑第六工程局有限公司 | Underground station bottom plate adjustable uplift pile adopting cover-excavation method and construction method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200911 |