CN115369870B - Post-cast anti-floating anchor rod - Google Patents
Post-cast anti-floating anchor rod Download PDFInfo
- Publication number
- CN115369870B CN115369870B CN202211156138.1A CN202211156138A CN115369870B CN 115369870 B CN115369870 B CN 115369870B CN 202211156138 A CN202211156138 A CN 202211156138A CN 115369870 B CN115369870 B CN 115369870B
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- CN
- China
- Prior art keywords
- anchor
- sleeve
- grouting pipe
- post
- bar
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- 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
- E02D31/02—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 ground humidity or ground water
-
- 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
Abstract
The invention discloses a post-cast anti-floating anchor, which comprises: the grouting device comprises a sleeve, anchor rod reinforcing steel bars, a rear grouting pipe, a front grouting pipe and a casting body, wherein the sleeve is arranged at the top end of an anchor hole of a soil layer and is embedded in a waterproof cushion layer and a foundation structure layer, a stiffening ring plate is arranged on the inner wall of the sleeve, 3 openings for accommodating the anchor rod reinforcing steel bars are formed in the inner side of the stiffening ring plate, and the angles of the openings are distributed at equal angles to the inner side of the stiffening ring plate; the back slip casting pipe, preceding slip casting pipe and 3 stock reinforcing bars set up in the anchor eye, and be equipped with a plurality of articulated elements between each stock reinforcing bar and the back slip casting pipe and link to each other, send into stock reinforcing bar and the in-process of back slip casting pipe to the anchor eye in, each stock reinforcing bar press close to with back slip casting pipe setting, when stock reinforcing bar and back slip casting pipe top touch in the bottom of anchor eye, each articulated elements expand and prop up 3 stock reinforcing bars back slip casting pipe to make the afterbody of 3 stock reinforcing bars block respectively in 3 openings, and accomplish the connection of stock reinforcing bar and stiffening ring plate through the nut.
Description
Technical Field
The invention belongs to the field of building anti-floating structures, and particularly relates to a post-cast anti-floating anchor rod.
Background
The anti-floating anchor construction technology is mature in building construction, but the traditional anti-floating anchor construction technology still has great limitation.
The traditional anti-floating anchor rod has a longer construction period, and the construction of the next working procedure can be carried out only after the construction of the anti-floating anchor rod is completed and reaches a certain strength, so that the rapid penetration of each working procedure is difficult to realize due to the intermittent technology, and the foundation construction can not be completed in a short time;
meanwhile, after the construction of the traditional anti-floating anchor rod is finished, reinforcing steel bars on the upper portion of the anchor rod are exposed outside for a long time in the process of strength rise, and other working procedure machines and personnel are easy to crush and bend the reinforcing steel bars of the anchor rod in the construction process when finished product protection is not in place, and the anchor body is disturbed before the strength of the anti-floating anchor rod does not reach the design requirement, so that anti-floating failure is caused.
Thus, a new anchor rod technology capable of solving the conventional problems is needed.
Disclosure of Invention
The invention aims at: in order to overcome the prior art problem, a post-cast anti-floating anchor rod is disclosed, through the structural design of the post-cast anti-floating anchor rod, the construction of the anti-floating anchor rod can be carried out in a pre-buried sleeve after the construction of a basement structure is completed, and the construction procedure of the traditional anti-floating anchor rod is changed.
The aim of the invention is achieved by the following technical scheme:
a post-cast anti-floating anchor, the post-cast anti-floating anchor comprising: the grouting device comprises a sleeve, anchor rod reinforcing steel bars, a rear grouting pipe, a front grouting pipe and a casting body, wherein the sleeve is arranged at the top end of an anchor hole of a soil layer and is embedded in a waterproof cushion layer and a foundation structure layer, a stiffening ring plate is arranged on the inner wall of the sleeve, 3 openings for accommodating the anchor rod reinforcing steel bars are formed in the inner side of the stiffening ring plate, and the angles of the openings are distributed at equal angles to the inner side of the stiffening ring plate; the rear grouting pipe, the front grouting pipe and 3 anchor bar reinforcements are arranged in the anchor hole, a plurality of hinging pieces are arranged between each anchor bar reinforcement and the rear grouting pipe and are connected, when the anchor bar reinforcements and the rear grouting pipe are fed into the anchor hole, each anchor bar reinforcement is close to the rear grouting pipe, when the anchor bar reinforcements and the rear grouting pipe are propped against the bottom of the anchor hole, each hinging piece expands and supports the 3 anchor bar reinforcements away from the rear grouting pipe, the tail parts of the 3 anchor bar reinforcements are respectively clamped into the 3 openings, and the connection between the anchor bar reinforcements and the stiffening ring plate is completed through nuts; the casting body is cast inside the anchor hole and the sleeve by the rear grouting pipe and/or the front grouting pipe.
According to a preferred embodiment, the hinge comprises: the sleeve ring is sleeved on the rear grouting pipe, the clamp is sleeved on the anchor rod reinforcing steel bar, and a hinged support in the joint hinge is hinged with the top end of the sleeve ring through a shaft rod; the hinge head in the joint hinge is vertically connected with the clamp through a shaft rod.
According to a preferred embodiment, the side wall of the rear grouting pipe is provided with a plurality of check valves for secondary grouting.
According to a preferred embodiment, the anchor bar reinforcing steel bar is formed by splicing a plurality of reinforcing steel bar sections, and the rear grouting pipe is formed by splicing a plurality of pipe bodies.
According to a preferred embodiment, the ends of each bar section are provided with an external thread structure, and adjacent bar sections are connected by a sleeve to be internally threaded; the pipe bodies of the post grouting pipe are connected with each other through a thread structure.
According to a preferred embodiment, the inner wall and the outer wall of the sleeve are provided with a plurality of water stop rings, and the water stop rings on the outer wall of the sleeve are pre-cast in the waterproof cushion layer and the foundation structure layer.
According to a preferred embodiment, the top of the sleeve is further provided with a buried plate, which is fastened by bolts to the water stop ring on the inner top side of the sleeve.
According to a preferred embodiment, a water-swellable rubber water stop pad is also arranged between the buried plate and the water stop ring.
According to a preferred embodiment, the sleeve and each water stop ring are constructed in one piece.
According to a preferred embodiment, the sleeve and the stiffening ring plate are constructed by welding or integral molding.
The foregoing inventive concepts and various further alternatives thereof may be freely combined to form multiple concepts, all of which are contemplated and claimed herein. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
The invention has the beneficial effects that: according to the post-cast anti-floating anchor rod, through the structural design, the anti-floating anchor rod can be constructed in the embedded sleeve after the basement structure construction or the whole building frame structure construction is completed, and the construction procedure of the traditional anti-floating anchor rod is changed. Therefore, the construction of the anti-floating anchor rod can be parallel to the construction of other structures, and the whole construction period of the building is greatly saved.
Drawings
FIG. 1 is a schematic diagram of the top connection structure of a post-cast anti-floating anchor of the present invention;
FIG. 2 is a schematic cross-sectional view of a post-cast anti-floating anchor stiffener at a stiffener ring;
FIG. 3 is a schematic diagram of the connection relationship between the anchor bar in the post-cast anti-floating anchor of the present invention;
FIG. 4 is a schematic diagram of the connection relationship between each anchor bar and the post grouting pipe in the post-cast anti-floating anchor according to the present invention;
FIG. 5 is a schematic diagram of the structure of each anchor bar of the post-cast anti-floating anchor of the present invention before deployment;
FIG. 6 is a schematic view of the structure of the post-cast anti-floating anchor of the present invention after the anchor bars are deployed;
the waterproof construction system comprises a casing, a water stop ring, a stiffening ring plate, a gap, a buried plate, a bolt steel bar, a sleeve, a rear grouting pipe, a check valve, a front grouting pipe, a sleeve, a collar, a clamp, a joint hinge, an anchor hole, a soil layer, a waterproof cushion layer and a foundation structure layer.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, in the present invention, if a specific structure, connection relationship, position relationship, power source relationship, etc. are not specifically written, the structure, connection relationship, position relationship, power source relationship, etc. related to the present invention can be known by those skilled in the art without any creative effort.
Example 1:
referring to fig. 1-6, there is shown a post-cast anti-floating anchor comprising: the grouting device comprises a sleeve 101, anchor bar steel bars 201, a rear grouting pipe 202, a front grouting pipe 203 and a casting body. The connection of the post-cast anti-floating anchor with the surrounding building waterproof bedding layer 302 and the foundation structure layer 303 is achieved through the sleeve 101. The post grouting pipe 202 is used to achieve high pressure secondary grouting.
The sleeve 101 is arranged at the top end of the anchor hole 300 of the soil layer 301 and is pre-buried in the waterproof cushion layer 302 and the foundation structure layer 303.
Preferably, the inner wall and the outer wall of the sleeve 101 are provided with a plurality of water stop rings 102, and the water stop rings 102 positioned on the outer wall of the sleeve 101 are pre-cast in the waterproof cushion layer 302 and the foundation structure layer 303. The sleeve 101 and each water stop ring 102 may be integrally formed.
The water stop ring 102 is arranged to help to isolate groundwater in the soil layer 301 or below the soil layer 301, so that the groundwater is prevented from bursting through the foundation structure layer 303 through gaps between each structure layer and the post-pouring anti-floating anchor rod, and water penetration accidents are avoided.
Preferably, a stiffening ring plate 103 is arranged on the inner wall of the sleeve 101, 3 notches 103a for accommodating the anchor rod reinforcing steel bars 201 are arranged on the inner side of the stiffening ring plate 103, and the notches 103a are distributed at equal angles with the inner side of the stiffening ring plate 103. For example, the sleeve 101 and the stiffening ring plate 103 are constructed by welding or integral molding.
Preferably, the rear grouting pipe 202, the front grouting pipe 203 and 3 anchor bar steel bars 201 are arranged in the anchor holes 300, and a plurality of hinging pieces are arranged between each anchor bar steel bar 201 and the rear grouting pipe 202 for connection.
When the anchor bar 201 and the rear grouting pipe 202 are fed into the anchor hole 300, each anchor bar 201 is closely arranged with the rear grouting pipe 202, so that each anchor bar 201 can be smoothly fed into the anchor hole 300.
When the anchor bar 201 and the rear grouting pipe 202 are propped against the bottom of the anchor hole 300, the hinges are unfolded and support the 3 anchor bar 201 away from the rear grouting pipe 202, the tail parts of the 3 anchor bar 201 are respectively clamped into the 3 gaps 103a, and the anchor bar 201 is connected with the stiffening ring plate 103 through nuts. The anchor rod steel bar 201 is connected with the stiffening ring plate 103 of the reserved sleeve 101 to play an anchoring effect.
The 3 anchor bar steel bars 201 are supported away from the post grouting pipe 202 through the hinge parts and clamped into the 3 openings 103 a. That is, the 3 anchor rod reinforcing steel bars 201 are uniformly distributed in the anchor holes, so that the post-cast anti-floating anchor rod has stronger structural stability and better drawing performance after grouting.
The casting body is cast inside the anchor hole 300 and the sleeve 101 by the rear grouting pipe 202 and/or the front grouting pipe 203. The casting body is obtained by solidifying concrete slurry.
Preferably, a plurality of check valves 202a for performing secondary grouting are provided on the side wall of the rear grouting pipe 202. When the density of the slurry injected from the front grouting pipe 203 is too low or thin, the secondary grouting with high density and high pressure can be performed from the rear grouting pipe 202 through the check valve 202a. Or when the internal structure of the post-cast anti-floating anchor rod is broken in a certain period of use or is broken due to earthquake and other reasons, secondary grouting can be performed through the post-grouting pipe 202, so that structural repair of the anti-floating anchor rod is realized, and the service life of the anti-floating anchor rod is prolonged.
Preferably, the hinge comprises: collar 204, collar 205 and articulation 206. The collar 204 is sleeved on the rear grouting pipe 202, and the clamp 205 is sleeved on the anchor bar steel bar 201. The hinge support in the articulation 206 is hinged to the top end of the collar 204 via a shaft. The head of the articulation 206 is connected vertically to the clamp 205 via a shaft.
That is, by the structural arrangement of the hinge, each anchor bar reinforcement 201 can be close to the rear grouting pipe 202 or far from the rear grouting pipe 202. When each anchor bar 201 is close to the rear grouting pipe 202, the anchor bar 201 and the rear grouting pipe 202 are conveniently sent into the anchor hole 300; when each anchor bar 201 is far away from the rear grouting pipe 202, the length of the hinged support shaft rod is used for controlling the distance of each anchor bar 201 far away from the rear grouting pipe 202, so that the anchor bars 201 are uniformly distributed in the anchor holes 300.
Preferably, the anchor bar 201 is formed by splicing a plurality of bar segments, and the rear grouting pipe 202 is formed by splicing a plurality of pipe bodies.
Further, the end part of each steel bar section is provided with an external thread structure, and adjacent steel bar sections are connected through a sleeve 201a to be internally threaded; the pipe bodies of the post grouting pipe 202 are connected with each other through a thread structure.
The post-pouring anti-floating anchor rod can be suitable for narrow environments, such as a scene that a basement roof side floor is constructed, by arranging the anchor rod reinforcing steel bars 201 and the post-grouting pipes 202 in a segmented mode.
Preferably, a buried plate 104 is further arranged on the top of the sleeve 101, and the buried plate 104 is fixed on the water stop ring 102 on the inner top side of the sleeve 101 through bolts 105. A water-swellable rubber water stop pad is also arranged between the buried plate 104 and the water stop ring 102. The water-swelling rubber water stop pad is arranged between the bolt and the buried plate, so that the water-proof effect is achieved, and meanwhile, the pressure impact of the anti-floating anchor rod failure water-down head is prevented, so that water seepage is caused. That is, the buried plate 104 can further improve the water-proof performance of the post-cast anti-floating anchor.
According to the post-cast anti-floating anchor rod, through the structural design, the anti-floating anchor rod can be constructed in the embedded sleeve after the basement structure construction or the whole building frame structure construction is completed, and the construction procedure of the traditional anti-floating anchor rod is changed. Therefore, the construction of the anti-floating anchor rod can be parallel to the construction of other structures, and the whole construction period of the building is greatly saved. Meanwhile, long-time exposure of the anti-floating anchor bar reinforcing steel bar is avoided, and finished product protection is well carried out.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The post-cast anti-floating anchor rod is characterized by comprising: a sleeve (101), anchor bar reinforcing steel bars (201), a rear grouting pipe (202), a front grouting pipe (203) and a casting body,
the sleeve (101) is arranged at the top end of an anchor hole (300) of the soil layer (301) and is embedded in the waterproof cushion layer (302) and the foundation structure layer (303), a stiffening ring plate (103) is arranged on the inner wall of the sleeve (101), 3 openings (103 a) for accommodating anchor rod reinforcing steel bars (201) are formed in the inner side of the stiffening ring plate (103), and the openings (103 a) are distributed at equal angles and are formed in the inner side of the stiffening ring plate (103);
the rear grouting pipe (202), the front grouting pipe (203) and 3 anchor bar (201) are arranged in the anchor hole (300), a plurality of hinging pieces are arranged between each anchor bar (201) and the rear grouting pipe (202) for connection,
the hinge includes: a collar (204), a clip (205) and a joint hinge (206),
the sleeve ring (204) is sleeved on the rear grouting pipe (202), the clamp (205) is sleeved on the anchor rod reinforcing steel bar (201), and the hinged support in the hinge joint (206) is hinged with the top end of the sleeve ring (204) through a shaft rod; the hinge head in the joint hinge (206) is vertically connected with the clamp (205) through a shaft rod;
when the anchor bar (201) and the rear grouting pipe (202) are fed into the anchor hole (300), each anchor bar (201) is closely arranged with the rear grouting pipe (202),
when the anchor bar (201) and the rear grouting pipe (202) are propped against the bottom of the anchor hole (300), the hinges are unfolded and support the 3 anchor bar (201) away from the rear grouting pipe (202), the tail parts of the 3 anchor bar (201) are respectively clamped into the 3 openings (103 a), and the anchor bar (201) and the stiffening ring plate (103) are connected through nuts;
the casting body is cast inside the anchor hole (300) and the sleeve (101) by a rear grouting pipe (202) and/or a front grouting pipe (203).
2. The post-cast anti-floating anchor of claim 1, wherein a plurality of check valves (202 a) for secondary grouting are arranged on the side wall of the post-grouting pipe (202).
3. The post-cast anti-floating anchor of claim 1, wherein the anchor bar (201) is formed by splicing a plurality of bar segments, and the post-grouting pipe (202) is formed by splicing a plurality of pipe bodies.
4. A post-cast anti-floating bolt according to claim 3, wherein each bar section is provided with an external thread structure at the end thereof, adjacent bar sections being connected by a sleeve (201 a) with internal threads; the pipe bodies of the post grouting pipe (202) are connected with each other through a thread structure.
5. Post-cast anti-floating anchor according to claim 1, characterized in that the inner wall and the outer wall of the sleeve (101) are provided with a plurality of water stop rings (102), and the water stop rings (102) on the outer wall of the sleeve (101) are pre-cast in the waterproof cushion layer (302) and the foundation structure layer (303).
6. The post-cast anti-floating anchor according to claim 1, wherein a buried plate (104) is further arranged at the top of the sleeve (101), and the buried plate (104) is fixed on a water stop ring (102) at the inner top side of the sleeve (101) through bolts (105).
7. The post-cast anti-floating bolt of claim 6, wherein a water-swellable rubber water stop pad is further provided between the buried plate (104) and the water stop ring (102).
8. A post-cast anti-floating bolt according to claim 1, characterized in that the sleeve (101) and each water stop ring (102) are constructed in one piece.
9. Post-cast anti-floating anchor according to claim 1, characterized in that the sleeve (101) and the stiffening ring plate (103) are constructed by welding or by integral forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156138.1A CN115369870B (en) | 2022-09-22 | 2022-09-22 | Post-cast anti-floating anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156138.1A CN115369870B (en) | 2022-09-22 | 2022-09-22 | Post-cast anti-floating anchor rod |
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| Publication Number | Publication Date |
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| CN115369870A CN115369870A (en) | 2022-11-22 |
| CN115369870B true CN115369870B (en) | 2023-08-01 |
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| CN202211156138.1A Active CN115369870B (en) | 2022-09-22 | 2022-09-22 | Post-cast anti-floating anchor rod |
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| WO2020151347A1 (en) * | 2019-01-24 | 2020-07-30 | 深圳市地质环境研究院有限公司 | Prefabricated prestressed anchor structure |
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| WO2020151347A1 (en) * | 2019-01-24 | 2020-07-30 | 深圳市地质环境研究院有限公司 | Prefabricated prestressed anchor structure |
| CN210031841U (en) * | 2019-04-01 | 2020-02-07 | 宁波冶金勘察设计研究股份有限公司 | Side slope supporting structure |
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| CN115369870A (en) | 2022-11-22 |
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