CN115369929A - Post-cast anti-floating anchor rod construction method - Google Patents
Post-cast anti-floating anchor rod construction method Download PDFInfo
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- CN115369929A CN115369929A CN202211156214.9A CN202211156214A CN115369929A CN 115369929 A CN115369929 A CN 115369929A CN 202211156214 A CN202211156214 A CN 202211156214A CN 115369929 A CN115369929 A CN 115369929A
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- anchor rod
- sleeve
- post
- grouting pipe
- floating
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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
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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
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- 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
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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
- E02D31/02—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
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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
Abstract
The invention discloses a post-cast anti-floating anchor rod construction method, which comprises the following steps: step 1: embedding a sleeve, namely installing the sleeve in the center of the design position of the post-cast anti-floating anchor rod on a soil layer in a centering manner, embedding the bottom of the sleeve into the soil layer, and enabling the upper part of the sleeve to be flush with the design elevation of the post-cast anti-floating anchor rod; and 2, step: laying a waterproof cushion layer 302 above the soil layer, constructing a foundation structure layer above the waterproof cushion layer, and pouring a sleeve into the waterproof cushion layer and the foundation structure layer; and step 3: forming a hole, drilling a hole on the soil layer based on the embedded position of the sleeve to obtain an anchor hole for accommodating the post-cast anti-floating anchor rod; and 4, step 4: placing anchor rod reinforcing steel bars, a rear grouting pipe and a front grouting pipe into the anchor hole, and completing position adjustment of the anchor rod reinforcing steel bars in the anchor hole; and 5: and (3) completing the connection of the tail end of each anchor rod steel bar and the sleeve, and grouting in the anchor hole and the sleeve by the rear grouting pipe and/or the front grouting pipe.
Description
Technical Field
The invention belongs to the field of anti-floating of buildings, and particularly relates to a post-cast anti-floating anchor rod construction method.
Background
The anti-floating anchor rod construction technology is mature day by day in building construction, but the traditional anti-floating anchor rod construction technology still has a great limitation.
The traditional anti-floating anchor rod has a long construction period, and the construction of the anti-floating anchor rod can be carried out in the next procedure only after the anti-floating anchor rod reaches a certain strength, so that the rapid penetration of each procedure is difficult to realize due to the technical intermittence, and the foundation construction cannot be completed in a short time;
after traditional anti-floating anchor rod construction was accomplished simultaneously, treat that the in-process stock upper portion reinforcing bar that its intensity rose can expose outside for a long time, other process machinery and personnel easily roll the stock reinforcing bar of buckling in the work progress when the finished product protection is not in place, disturb the anchor body before anti-floating anchor rod intensity does not reach the designing requirement to lead to anti-floating inefficacy.
Therefore, a new anchor rod technology capable of solving the conventional problems is urgently needed.
Disclosure of Invention
The invention aims to: in order to overcome the problems in the prior art, the post-cast anti-floating anchor rod construction method is disclosed, so that the anchor rod can be constructed in an embedded sleeve after the construction of a basement structure is completed, and the construction process of the traditional anti-floating anchor rod is changed.
The purpose of the invention is realized by the following technical scheme:
a post-cast anti-floating anchor rod construction method comprises the following steps:
step 1: embedding a sleeve, namely installing the sleeve in the center of the design position of the post-cast anti-floating anchor on a soil layer in a centering way, embedding the bottom of the sleeve into the soil layer, and enabling the upper part of the sleeve to be level to the design elevation of the post-cast anti-floating anchor;
step 2: laying a waterproof cushion layer 302 above the soil layer, constructing a foundation structure layer above the waterproof cushion layer, and pouring a sleeve into the waterproof cushion layer and the foundation structure layer;
and step 3: forming a hole, drilling a hole on the soil layer based on the embedded position of the sleeve to obtain an anchor hole for accommodating the post-cast anti-floating anchor rod;
and 4, step 4: putting the anchor rod steel bars, the rear grouting pipes and the front grouting pipes into the anchor hole, and completing position adjustment of the anchor rod steel bars in the anchor hole;
and 5: and (3) completing the connection of the tail end of each anchor rod steel bar and the sleeve, and grouting in the anchor hole and the sleeve by the rear grouting pipe and/or the front grouting pipe.
According to a preferred embodiment, the inner wall of the sleeve is provided with a stiffening ring plate, the inner side of the stiffening ring plate is provided with 3 openings for accommodating anchor rod reinforcing steel bars, and the openings are distributed at equal angles with the inner side of the stiffening ring plate; and each anchor rod steel bar is connected with the stiffening ring plate through a nut.
According to a preferred embodiment, be equipped with a plurality of articulated elements between each stock reinforcing bar and the back slip casting pipe and link to each other, when the in-process of sending into stock reinforcing bar and back slip casting pipe in the anchor eye, each stock reinforcing bar is pressed close to and is set up with back slip casting pipe, when stock reinforcing bar and back slip casting pipe top touch in the bottom of anchor eye, each articulated element expandes and props 3 stock reinforcing bars from back slip casting pipe, and make 3 tail portions of stock reinforcing bar block respectively in 3 openings, each stock reinforcing bar passes through the nut and accomplishes being connected of stock reinforcing bar and stiffening ring board.
According to a preferred embodiment, the hinge comprises: the anchor rod comprises a lantern ring, a hoop and a joint hinge, wherein the lantern ring is sleeved on the rear grouting pipe, the hoop is sleeved on the anchor rod steel bar, and a hinge seat in the joint hinge is hinged with the top end of the lantern ring through a shaft rod; the hinge head in the joint hinge is vertically connected with the hoop through a shaft lever.
According to a preferred embodiment, the side wall of the rear grouting pipe is provided with a plurality of one-way valves for secondary grouting.
According to a preferred embodiment, the anchor rod steel bar is formed by splicing a plurality of steel bar sections, and the rear grouting pipe is formed by splicing a plurality of pipe bodies.
According to a preferred embodiment, the end part of each reinforcing steel bar section is provided with an external thread structure, and adjacent reinforcing steel bar sections are connected through a sleeve to be internally threaded; all the pipe bodies forming the rear grouting pipe are connected with each other through a thread structure.
According to a preferred embodiment, a plurality of water stop rings are arranged on the inner wall and the outer wall of the sleeve, and the water stop rings on the outer wall of the sleeve are pre-poured in the waterproof cushion layer and the foundation structure layer.
According to a preferable embodiment, the top of the sleeve is further provided with a buried plate, and the buried plate is fixed on the water stop ring on the inner top side of the sleeve through bolts. And a water-swelling rubber water stop pad is arranged between the embedded plate and the water stop ring.
According to a preferred embodiment, the sleeve is constructed integrally with the water stop rings. The sleeve and the stiffening ring plate are constructed in a welding or integrated forming mode.
The aforementioned main aspects of the invention and their respective further alternatives may be freely combined to form a plurality of aspects, all of which are aspects that may be adopted and claimed by the present invention. The skilled person in the art can 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 scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that: by the post-pouring anti-floating anchor rod construction method, the anti-floating anchor rod can be constructed in the pre-buried sleeve after the construction of a basement structure or the construction of an integral building frame structure is finished, and the construction process 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 view of the connection structure of the top of the post-cast anti-floating anchor rod in the method of the invention;
FIG. 2 is a schematic cross-sectional view of a stiffening ring plate of an anti-floating anchor post-cast in the method of the present invention;
FIG. 3 is a schematic view showing the connection relationship between the reinforcing bars of the anchor rods in the post-cast anti-floating anchor rod according to the method of the present invention;
FIG. 4 is a schematic view showing the connection relationship between the reinforcing bars of each anchor rod and the post-grouting pipe in the post-cast anti-floating anchor rod in the method of the present invention;
FIG. 5 is a schematic structural view of the post-cast anti-floating anchor rod of the present invention before the reinforcing bars of the anchor rod are expanded;
FIG. 6 is a schematic view of the post-cast anti-floating anchor rod of the present invention after the reinforcing bars are expanded;
101-casing pipe, 102-water stop ring, 103-stiffening ring plate, 103 a-notch, 104-buried plate, 105-bolt, 201-anchor rod steel bar, 201 a-sleeve, 202-rear grouting pipe, 202 a-one-way valve, 203-front grouting pipe, 204-lantern ring, 205-hoop, 206-joint hinge, 300-anchor hole, 301-soil layer, 302-waterproof cushion layer and 303-foundation structure layer.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements 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," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the 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 otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the present invention, if the specific structures, connections, positions, power source relationships, etc., are not specifically written, the structures, connections, positions, power source relationships, etc., related to the present invention, can be known to those skilled in the art without creative work on the basis of the prior art.
Example 1:
referring to fig. 1 to 6, there is shown a post-cast anti-floating anchor rod construction method, including:
step 1: the sleeve 101 is embedded in advance, the sleeve 101 is installed in the center of the design position of the post-cast anti-floating anchor rod on the soil layer 301 in a centering mode, the bottom of the sleeve 101 is embedded in the soil layer, and the upper portion of the sleeve 101 is flush with the design elevation of the post-cast anti-floating anchor rod.
Specifically, the steel casing 101 is processed in advance according to the design drawing, and after the processing is completed, the molding quality of each part of the casing 101 is checked, so that water seepage caused by poor molding quality of the casing 101 is prevented.
After the inspection is finished, positioning and paying-off of the anchor rod are carried out according to the design drawing requirements of the anti-floating anchor rod, then the sleeve 101 is centered and installed in the center of the anti-floating anchor rod, the bottom of the sleeve 101 needs to be embedded into a soil layer 200mm below the designed elevation, and the upper portion of the sleeve 101 is flush with the designed elevation of the structure.
Step 2: the waterproof cushion layer 302 is laid above the soil layer 301, the foundation structure layer 303 is constructed above the waterproof cushion layer 302, and the sleeve 101 is poured into the waterproof cushion layer 302 and the foundation structure layer 303.
And 3, step 3: and (4) forming a hole, drilling on the soil layer 301 based on the pre-buried position of the sleeve 101, and obtaining an anchor hole 300 for accommodating the post-cast anti-floating anchor rod.
And 4, step 4: and (3) lowering the anchor rod steel bar 201, the rear grouting pipe 202 and the front grouting pipe 203 into the anchor hole 300, and completing the position adjustment of the anchor rod steel bar 201 in the anchor hole 300.
And 5: the connection between the tail end of each anchor bar 201 and the casing 101 is completed, and the rear grouting pipe 202 and/or the front grouting pipe 203 are grouted in the anchor hole 300 and the casing 101.
Preferably, a plurality of water stop rings 102 are arranged on the inner wall and the outer wall of the casing 101, and the water stop rings 102 on the outer wall of the casing 101 are pre-cast in the waterproof cushion layer 302 and the foundation structure layer 303. The sleeve 101 and the water stop rings 102 may be integrally formed.
The water stop ring 102 helps to isolate underground water in the soil layer 301 or below the soil layer 301, and avoids the phenomenon that the underground water breaks through the foundation structure layer 303 through gaps between the structure layers and the post-cast anti-floating anchor rods to cause water permeation accidents.
Preferably, a stiffening ring plate 103 is arranged on the inner wall of the casing 101, 3 openings 103a for accommodating the anchor rod reinforcing steel bars 201 are arranged on the inner side of the stiffening ring plate 103, and the openings 103a are distributed at equal angles on the inner side of the stiffening ring plate 103. For example, the casing 101 and the stiffener ring plate 103 are constructed by welding or integral molding.
Preferably, the rear grouting pipe 202, the front grouting pipe 203 and 3 anchor bars 201 are disposed in the anchor hole 300, and a plurality of hinges are disposed between each anchor bar 201 and the rear grouting pipe 202.
When the anchor bars 201 and the rear grout pipe 202 are fed into the anchor hole 300, each anchor bar 201 is disposed adjacent to the rear grout pipe 202 so that each anchor bar 201 can be smoothly fed into the anchor hole 300.
When the anchor rod steel bars 201 and the rear grouting pipe 202 are abutted to the bottom of the anchor hole 300, each hinge part is unfolded and supports 3 anchor rod steel bars 201 away from the rear grouting pipe 202, the tails of the 3 anchor rod steel bars 201 are respectively clamped into the 3 gaps 103a, and the connection between the anchor rod steel bars 201 and the stiffening ring plate 103 is completed through nuts. The anchor rod reinforcing steel bars 201 are connected with the stiffening ring plate 103 of the reserved casing 101 to achieve the anchoring effect.
The 3 anchor bars 201 are supported away from the rear grouting pipe 202 by the hinge and are clamped into the 3 notches 103 a. That is, the uniform distribution of the 3 anchor rod reinforcing steel bars 201 in the anchor hole is completed, so that after grouting, the post-cast anti-floating anchor rod has strong structural stability and good drawing performance.
Preferably, a plurality of check valves 202a for secondary grouting are arranged on the side wall of the rear grouting pipe 202. For example, one check valve 202a is arranged on the pipe wall every 2000mm, and when the anti-floating failure occurs, high-pressure grouting is adopted to carry out secondary grouting from the back grouting pipe, so that the anti-floating anchor rod is repaired. Alternatively, when the density of the slurry injected from the front grouting pipe 203 is too low or is relatively dilute, high-density and high-pressure secondary grouting can be performed from the rear grouting pipe 202 through the check valve 202a. Or, when the internal structure of post-cast anti-floating anchor rod breaks or the internal structure breaks due to earthquake or other reasons, the post-cast anti-floating anchor rod can be subjected to secondary grouting through the post-grouting pipe 202, so that the 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: a collar 204, a clip 205, and an articulation joint 206. The lantern ring 204 is sleeved on the rear grouting pipe 202, and the clamp band 205 is sleeved on the anchor rod steel bar 201. The hinge seat in the articulation hinge 206 is hinged to the top end of the collar 204 via a shaft. The joint of the knuckle 206 is connected to the yoke 205 via a shaft.
That is, the structural arrangement of the hinge member allows each anchor bar 201 to be close to the rear grout pipe 202 or far away from the rear grout pipe 202. When each anchor rod steel bar 201 is close to the rear grouting pipe 202, the anchor rod steel bars 201 and the rear grouting pipe 202 are conveniently sent into the anchor hole 300; when each anchor rod reinforcing steel bar 201 is far away from the rear grouting pipe 202, the distance of each anchor rod reinforcing steel bar 201 far away from the rear grouting pipe 202 is controlled through the length of the hinge base shaft, and the uniform distribution of each anchor rod reinforcing steel bar 201 in the anchor hole 300 is realized.
Preferably, the anchor bar 201 is formed by splicing a plurality of bar sections, and the rear grouting pipe 202 is formed by splicing a plurality of pipe bodies.
Furthermore, the end part of each steel bar section is provided with an external thread structure, and the adjacent steel bar sections are connected through a sleeve 201a to be internally threaded; the pipe bodies forming the rear grouting pipe 202 are connected with each other through a threaded structure.
Specifically, the post-grouting pipe 202 is made of DN40 steel pipe. Influenced by the story height of the basement structure, the rear grouting pipe 202 can be manufactured in sections, and the upper part and the lower part are connected by threading when the rear grouting pipe is placed in the basement structure.
Through carrying out segmentation setting with stock reinforcing bar 201 and back slip casting pipe 202 to make this post-cast anti-floating anchor rod can be adapted to narrow environment, for example, the scene that basement topside floor has been under construction and has been accomplished.
After the basement structure is completed and materials are cleaned, the construction of the rear anti-floating anchor rod can be carried out, the layer height of the basement structure is 3-5m, the designed length of the anti-floating anchor rod is 6-8m, the reinforcing steel bar of the rear anti-floating anchor rod needs to be segmented, the reinforcing steel bar is connected through a first-stage connector straight thread sleeve 201a, and the top of the reinforcing steel bar is sleeved with threads.
Preferably, the top of the casing 101 is further provided with a buried plate 104, and the buried plate 104 is fixed on the water stop ring 102 on the top side in the casing 101 through bolts 105. A water-swelling rubber water stop pad is arranged between the buried plate 104 and the water stop ring 102. Through the bolt with bury and set up water-swelling rubber stagnant water pad between the board, play waterproof effect, prevent simultaneously that anti-floating anchor bolt inefficacy flood peak's pressure from strikeing, lead to the infiltration. That is, the water-resisting performance of the post-cast anti-floating anchor rod can be further improved by the arranged buried plate 104.
According to the post-cast anti-floating anchor rod construction method, the anti-floating anchor rod is subjected to new structural design, so that the anchor rod can be constructed in the pre-buried sleeve after the construction of a basement structure or the construction of an integral building frame structure is completed, and the construction process 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, the long-time exposure of the reinforcing steel bars of the anti-floating anchor rod is avoided, and the finished product protection is well carried out.
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. A post-cast anti-floating anchor rod construction method is characterized by comprising the following steps:
step 1: the method comprises the following steps that a sleeve (101) is pre-buried, the sleeve (101) is installed in the center of the design position of the post-cast anti-floating anchor rod on a soil layer (301) in a centering mode, the bottom of the sleeve (101) is buried in the soil layer, and the upper portion of the sleeve (101) is flush with the design elevation of the post-cast anti-floating anchor rod;
step 2: laying a waterproof cushion layer (302) above a soil layer (301), constructing a foundation structure layer (303) above the waterproof cushion layer (302), and pouring the sleeve (101) into the waterproof cushion layer (302) and the foundation structure layer (303);
and step 3: forming a hole, drilling a hole on the soil layer (301) based on the embedded position of the sleeve (101), and obtaining an anchor hole (300) for accommodating a post-cast anti-floating anchor rod;
and 4, step 4: lowering the anchor rod reinforcing steel bar (201), the rear grouting pipe (202) and the front grouting pipe (203) into the anchor hole (300), and completing the position adjustment of the anchor rod reinforcing steel bar (201) in the anchor hole (300);
and 5: and (3) completing the connection of the tail end of each anchor rod steel bar (201) and the sleeve (101), and grouting in the anchor hole (300) and the sleeve (101) through the rear grouting pipe (202) and/or the front grouting pipe (203).
2. The post-cast anti-floating anchor rod construction method according to claim 1, wherein 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 all the openings (103 a) are distributed at equal angles with the inner side of the stiffening ring plate (103); and each anchor rod reinforcing steel bar (201) is connected with the stiffening ring plate (103) through a nut.
3. The post-cast anti-floating anchor rod construction method as claimed in claim 2, wherein a plurality of hinge members are provided between each anchor rod reinforcement (201) and the post-grouting pipe (202) to be connected,
when the anchor rod reinforcing steel bars (201) and the rear grouting pipe (202) are fed into the anchor hole (300), each anchor rod reinforcing steel bar (201) is arranged close to the rear grouting pipe (202),
when stock reinforcing bar (201) and back slip casting pipe (202) top touched in the bottom of anchor eye (300), each articulated elements expansion and prop 3 stock reinforcing bar (201) from back slip casting pipe (202) to in making 3 stock reinforcing bar's (201) afterbody card go into 3 opening (103 a) respectively, each stock reinforcing bar (201) pass through the nut accomplish the stock reinforcing bar (201) and the connection of stiffening ring board (103).
4. A post-cast anti-floating anchor construction method according to claim 3, wherein the hinge member comprises: a lantern ring (204), a hoop (205) and a joint hinge (206),
the lantern ring (204) is sleeved on the rear grouting pipe (202), the hoop (205) is sleeved on the anchor rod steel bar (201), and a hinged support in the joint hinge (206) is hinged to the top end of the lantern ring (204) through a shaft rod; the joint head of the joint hinge (206) is vertically connected with the clamp (205) through a shaft rod.
5. The post-cast anti-floating anchor rod construction method according to claim 1, wherein a plurality of check valves (202 a) for performing secondary grouting are provided on the side wall of the post-grouting pipe (202).
6. A post-cast anti-floating anchor construction method according to claim 1, wherein the anchor reinforcing steel bars (201) are formed by splicing a plurality of reinforcing steel bar sections, and the post-grouting pipe (202) is formed by splicing a plurality of pipe bodies.
7. The post-cast anti-floating anchor rod construction method according to claim 6, wherein the end of each reinforcing bar section is provided with an external thread structure, and adjacent reinforcing bar sections are connected through a sleeve (201 a) to be internally threaded; all the pipe bodies forming the rear grouting pipe (202) are connected with each other through a thread structure.
8. The post-cast anti-floating anchor rod construction method according to claim 1, wherein a plurality of water stop rings (102) are arranged on the inner wall and the outer wall of the sleeve (101), 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).
9. The post-cast anti-floating anchor rod construction method 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); a water-swelling rubber water stop pad is arranged between the buried plate (104) and the water stop ring (102).
10. The post-cast anti-floating anchor rod construction method according to claim 1, wherein the sleeve (101) and each water stop ring (102) are constructed by integral forming; the sleeve (101) and the stiffening ring plate (103) are constructed in a welding or integrated forming mode.
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| CN202211156214.9A CN115369929B (en) | 2022-09-22 | 2022-09-22 | Post-pouring anti-floating anchor construction method |
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| CN202211156214.9A CN115369929B (en) | 2022-09-22 | 2022-09-22 | Post-pouring anti-floating anchor construction method |
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| CN115369929B CN115369929B (en) | 2023-07-28 |
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| WO2022134224A1 (en) * | 2020-12-23 | 2022-06-30 | 江苏东合南岩土科技股份有限公司 | Construction method for pre-stressed pull-resistant anchor rod of concrete expansion head |
| CN217352455U (en) * | 2022-03-23 | 2022-09-02 | 新时尚建设有限公司 | Energy-saving composite anti-floating anchor rod |
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| CN115369929B (en) | 2023-07-28 |
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