CN114855792B - Hierarchical supercharged anti-floating anchor rod and construction method thereof - Google Patents
Hierarchical supercharged anti-floating anchor rod and construction method thereof Download PDFInfo
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- CN114855792B CN114855792B CN202210465122.2A CN202210465122A CN114855792B CN 114855792 B CN114855792 B CN 114855792B CN 202210465122 A CN202210465122 A CN 202210465122A CN 114855792 B CN114855792 B CN 114855792B
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- 238000007667 floating Methods 0.000 title claims abstract description 49
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 46
- 238000005192 partition Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 24
- 239000011440 grout Substances 0.000 claims description 21
- 238000007569 slipcasting Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 238000003825 pressing Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Abstract
The invention relates to a graded supercharged anti-floating anchor rod and a construction method thereof, wherein the graded supercharged anti-floating anchor rod comprises a central tube, an anchor rod, stirrups and a graded supercharging device, the central tube is of a hollow structure, a partition plate is arranged in the central tube, and a primary grouting tube and a secondary supercharging tube are formed in the central tube; the grading supercharging device comprises grading plates and baffle plates, wherein the baffle plates are uniformly distributed and fixed on the lower side surface of the grading plates, the middle parts of the grading plates are matched and sleeved on the central pipe, meanwhile, the inner sides of the baffle plates are tightly attached to and fixed on the central pipe, and the side wall of the central pipe is provided with a slurry outlet which enables the primary grouting pipe and the secondary supercharging pipe to be communicated with the grading grouting area on the corresponding side; the grading plates are uniformly distributed with limiting grooves with outward openings, the anchor rods are fixedly matched in the limiting grooves, and the stirrup hoops are fixedly arranged on the outer sides of the steel bars; the invention has novel integral structure, improves the fixing, grouting efficiency, grouting strength, grouting uniformity and the like of the anchor rod compared with the existing structure, improves the construction efficiency and the pulling resistance of the anti-floating anchor rod, and reduces the construction difficulty.
Description
Technical Field
The invention relates to the technical field of anti-floating anchors, in particular to a graded supercharged anti-floating anchor and a construction method thereof.
Background
The anti-floating anchor rod is one kind of anti-floating measure for underground structure in building engineering. The anti-floating anchor rod refers to a structural member which is arranged for resisting the upward displacement of a building on the anti-floating anchor rod, is related to the height and the change condition of the underground water level, and is different from a common foundation pile, wherein the foundation pile is an anti-floating pile which bears the load pressure of the building, and the anti-floating pile bears the tensile force, and the stress mechanisms of the anti-floating anchor rod and the anti-floating pile are opposite. One end of the anti-floating anchor rod is anchored on the bottom plate of the building, the other end of the anti-floating anchor rod is anchored on the bearing layer of the foundation of the building, and the floating force is resisted by the friction force between the anchor body reinforcing steel bars and the grouting body and the surrounding soil layer, so that the anti-floating effect of the anti-floating anchor rod is achieved.
The existing anti-floating anchor rod is generally bound on the anchor rod in structure, grouting is generally carried out in a bottom grouting mode, grouting can be carried out in a mode of gradually lifting the grouting pipe upwards, or grouting is carried out in a combination of two grouting modes, grouting efficiency of the structure is low, grouting intensity is high for grouting equipment load, especially when pressurizing grouting is carried out, a bottom grouting mode is usually adopted, grouting equipment needs to overcome the dead weight of slurry in an anchor hole to enable the grouting to upwards return, meanwhile, the single-point grouting mode easily causes uneven slurry distribution, bottom grouting tends to cause the bottom to be denser than the upper portion, high grouting pressure is needed in order to improve the anti-floating anchor rod, and uneven compactness still exists.
Meanwhile, the existing anti-floating anchors are fixed by spot welding, and the positioning ribs are fixed on the anti-floating anchors by welding, so that the structure is weak in fixing strength and easy to fall off, and based on the structure, the research on the graded supercharged anti-floating anchors is necessary.
Disclosure of Invention
In view of the above, the invention aims to provide a graded supercharged anti-floating anchor and a construction method thereof, which effectively solve the problems of poor structural stability, low grouting efficiency and uneven slurry strength of the existing anti-floating anchors.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a hierarchical booster-type anti-floating anchor rod, includes center tube, stock, stirrup and hierarchical supercharging device, the center tube is hollow structure, and its inside is provided with the baffle to form first order slip casting pipe and second grade booster pipe in the center tube, the outside of two pipes is connected corresponding slip casting equipment respectively; the grading supercharging device comprises grading plates and baffle plates, wherein the baffle plates are uniformly distributed and fixed on the lower side surfaces of the grading plates, the middle parts of the grading plates are matched and sleeved on the central pipe, and meanwhile, the inner sides of the baffle plates are tightly attached to and fixed on the central pipe, so that a plurality of independent grading grouting areas are formed on the outer side of the central pipe, and slurry outlets which enable the primary grouting pipe and the secondary supercharging pipe to be communicated with the grading grouting areas on the corresponding sides are formed on the side walls of the central pipe; the classifying plate equipartition has outside open-ended spacing groove, the sizing outlet is staggered with the baffle fixed point to the spacing groove, and the stock is matchedly fixed in the spacing inslot, the stirrup staple bolt is fixed in the outside of stock.
Further, the size of the opening of the slurry outlet of the primary grouting pipe is sequentially increased from top to bottom.
Further, the slurry outlet is of a flat hole-shaped structure axially arranged along the central tube, and the length of the slurry outlet is smaller than that of the baffle.
Further, the outer side wall of the baffle plate protrudes out of the classifying plate, and the baffle plate is vertically fixed on the classifying plate.
Furthermore, the stirrups and the graded supercharging device are alternately arranged on the central tube and the anchor rod.
Further, the stock is provided with three, the baffle is provided with three to formed one-level slip casting region, two-stage supercharging region and buffer area in the outside of center tube, all be provided with on one-level slip casting tube and the two-stage supercharging tube with the grout outlet of one-level slip casting region and two-stage supercharging region intercommunication.
Further, the lateral surface of baffle is provided with the fillet, be provided with the intercommunicating pore on the classifying plate.
Furthermore, the tail ends of the anchor rod and the central tube are fixed on the end head, and the end head is in a frustum-shaped structure.
Further, an adapter is arranged at the upper part of the central tube, and the adapter comprises a double connector, a sealing plate and a sealing cap; the upper end of the central tube is provided with an external thread section, the sealing cap is in threaded connection with the external thread section, the double joint is matched and sleeved at the inlets of the primary grouting tube and the secondary supercharging tube, the sealing plate is fixed on the double joint and can be located at the end of the central tube, and the sealing cap is sleeved on the sealing plate and the double joint and in threaded connection with the external thread section.
A construction method of a graded supercharged anti-floating anchor rod comprises the following steps of;
step one, cleaning a site and positioning an opening;
cleaning a construction site, positioning and drawing lines according to a construction drawing, determining a hole opening position, opening holes to a specified depth by using a drilling machine, and cleaning the hole wall by using an air compressor;
step two, the anti-floating anchor rod is lowered;
lifting the anti-floating anchor rod, and inserting the anti-floating anchor rod into the anchor hole from top to bottom;
step three, grouting;
the first-stage grouting equipment is communicated with a joint of the first-stage grouting pipe, the second-stage grouting equipment is communicated with the second-stage supercharging pipe, first-stage grouting equipment is started, grout enters the anchor holes through the grout outlets respectively, after the anchor holes are filled with the grout, the first-stage grouting pipe is closed, crushed stones are filled at the upper ends of the anchor holes, a compacted ventilation upper cover is formed at the upper parts of the anchor holes, and then the second-stage grouting equipment is started until the anchor holes are filled with the grout;
step four, supplementing slurry;
and (5) after the slurry in the anchor hole is solidified, repairing the slurry around the anchor hole and at the upper part.
The beneficial effects of the technical scheme are as follows: the anti-floating anchor rod is provided with a central tube, the central tube is arranged in the middle, anchor rods are distributed on the outer side of the central tube, a grading plate is sleeved on the central tube for connecting the central tube and the anchor rods, a limiting groove is formed in the grading plate, the anchor rods are limited from the inside, and the outer side of the anchor rods are limited by stirrups, so that the anchor rods and the central tube are connected together to form a stable integrated structure.
The invention is worth to describe, through the grading plates uniformly distributed at intervals, not only a fixed foundation (limit groove) is provided for the installation of the anchor rod, but also spot welding or wire tying fixation is properly applied, and meanwhile, the anchor rod can be firmly fixed by being matched with stirrups.
The invention also discloses a method for forming the grouting structure of the anchor hole, which comprises the steps of dividing the anchor rod into a plurality of areas by utilizing the grading plate, forming a plurality of grading grouting areas which are vertically and continuously distributed in the anchor hole due to the existence of the grading plate when the anchor rod is inserted into the anchor hole, and communicating the adjacent grading grouting areas through gaps between the grading plate and the anchor hole wall, wherein the grading plate can prevent most of slurry in the grading grouting areas from entering the adjacent grading grouting areas, and is provided with a grouting port at the upper part.
In addition, the invention not only realizes the positioning function of the original positioning rib through the baffle plate structure, but also forms a barrier near the grouting opening, so that the slurry can firstly fill the area surrounded by the baffle plate when pressing, then overflows outwards from the gap between the baffle plate and the anchor hole, the structure can press outwards from the hole wall, thereby ensuring the connection strength between the slurry and the hole wall, compared with the prior middle grouting, the slurry can fully enter the reserved gap between the hole walls in an outwards diffusion mode, and the slurry and the gap of the hole wall can be fully combined.
Therefore, the invention has novel integral structure, improves the fixing, grouting efficiency, grouting intensity, grouting uniformity and the like of the anchor rod compared with the prior structure, improves the construction efficiency and the pulling-out resistance of the anti-floating anchor rod, reduces the construction difficulty, has stable integral preassembly of the anti-floating anchor rod structure, is convenient to manufacture, avoids falling off in the field or in the transportation process, influences the construction progress, and provides a new structure and process for the construction of the anti-floating anchor rod.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a bottom view of FIG. 1;
FIG. 7 is a schematic view of another embodiment of the present invention;
FIG. 8 is a top view of a construction state;
fig. 9 is a schematic structural view of the adaptor.
Reference numerals: 1 is a central tube, 2 is a partition plate, 3 is a primary grouting tube, 4 is a secondary booster tube, 5 is a grading plate, 6 is a limiting groove, 7 is an anchor rod, 8 is a baffle, 9 is stirrups, 10 is a grout outlet, 11 is an end, 12 is a grading grouting area, 13 is a double joint, 14 is a pressing block, 15 is a sealing plate, 16 is a sealing cap, and 17 is an external thread section.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
embodiment 1, this embodiment aims at providing a hierarchical booster-type anti-floating anchor and construction method thereof, is mainly used for anti-floating anchor construction in construction, and is directed at the problem that current anti-floating anchor structure exists that structural stability is poor, grouting efficiency is low and thick liquid intensity is inhomogeneous, and this embodiment provides a hierarchical booster-type anti-floating anchor and construction method thereof.
As shown in fig. 1-6, a graded supercharged anti-floating anchor rod comprises a central tube 1, an anchor rod 7, stirrups 9 and a graded supercharging device, wherein the central tube 1 is of a hollow structure, a partition plate 2 is arranged in the central tube, a primary grouting tube 3 and a secondary supercharging tube 4 are formed in the central tube, and grouting equipment with corresponding grouting strength is respectively connected to the outer sides of the two tubes; the concrete structure of center tube 1 can be the pipe structure during concrete implementation, and the baffle is the diaphragm, and one-level slip casting pipe and second grade booster pipe are semicircle pipe, and the inner space of pipe has also been fully utilized to this kind of structure, also can set up one-level slip casting pipe and second grade booster pipe as the interior round tube structure of seting up on the pipe, and its core lies in fixing stock equipment and forming hollow slip casting pipe in its inside with the center tube as the carrier, avoids increasing extra slip casting pipe.
The grading supercharging device in this embodiment includes grading plate 5 and baffle 8, baffle 8 equipartition is fixed in the downside of grading plate 5, the middle part matching suit of grading plate 5 is on center tube 1, the inboard of baffle 8 is hugged closely and is fixed on center tube 1 simultaneously, thereby a plurality of independent grading grouting areas 12 have been formed in the outside of center tube 1, grading plate 5 can be fixed with the baffle an organic whole in this embodiment, both matching suit is fixed at center tube 1 also can fix on center tube 1 respectively, structural baffle 8, grading plate 5 and center tube 1 outer wall have formed grading grouting area 12, and set up on the lateral wall of center tube 1 and have the grout outlet 10 that makes one-level grouting pipe and second grade supercharging pipe and the corresponding side grading grouting area intercommunication.
According to the embodiment, the outer side wall of the baffle plate 8 protrudes out of the grading plate 5, the baffle plate 8 is vertically fixed on the grading plate 5, a plurality of grouting points and baffle plate structures surrounding the grouting points are arranged outside the central pipe 1, each grouting point can discharge slurry, so that multi-point grouting is realized, the slurry on the upper part can naturally flow downwards, the efficiency of primary grouting is improved, the slurry can quickly fill anchor holes, the grouting openings are arranged at intervals, the slurry in the anchor holes can be discharged from the multiple points and extruded, in addition, when the slurry is extruded, the grading grouting area where the grouting openings are located is extruded in advance, then the sizing plate and the baffle plate are bypassed to expand downwards and outwards, namely, the slurry discharged from the grouting openings is firstly filled with an area, and then is extruded from the periphery of the filled area to the surrounding area, so that the slurry at the periphery is high in strength, the gap of the anchor holes can be fully filled with the slurry, the inner wall of the anchor holes is fully filled with the slurry, the slurry is ensured to be attached to the inner wall of the anchor holes, and the whole distribution uniformity of the slurry is improved compared with the bottom of the existing slurry.
In this embodiment, classifying board 5 equipartition has outside open-ended spacing groove 6, and spacing groove 6 staggers thick liquid mouth 10 and baffle 8 fixed point, and stock 7 matching is fixed in spacing groove 6, and stirrup 9 staple bolt is fixed in the outside of stock, all fixes on the end at the end of stock and center tube simultaneously, and the end is frustum form structure to in the device inserts the anchor eye.
The classifying plate in this embodiment not only provides the spacing groove 6 that is used for fixed inlaying for the installation of stock to suitable spot welding or the wire fixing of applys, simultaneously with stirrup 9 cooperation can realize the firm of stock 7, concretely as shown in fig. 1, stirrup 9 and hierarchical supercharging device set up on center tube 1 and stock 7 in turn, apply the restriction from the outside of stock 7 through stirrup 9, and the inboard is by the restriction of spacing groove 6, both cooperations ensure the stock aversion, and there is the clearance between stock 7 and the center tube, thick liquid can get into wherein, stock overall structure compressive strength is big, compare current cambered surface and cambered surface welding between the stock, great reduction the construction degree of difficulty, the welded point position has been reduced, firm intensity has been improved.
In the specific construction, in this embodiment, a construction method of a graded supercharged anti-floating anchor includes the following steps;
step one, site cleaning and positioning open-pore
The foundation pit is excavated to the designed elevation, firstly, a construction site is cleaned, then a line is drawn according to the positioning of a construction drawing, the position of an opening is determined, the opening is carried out to a specified depth by utilizing a drilling machine, and the hole wall is cleaned by an air compressor; when in implementation, the drilling machine adopts an MDJ-50 type down-the-hole drill root pipe drilling machine, the allowable deviation of the drilling verticality is less than 1%, and the aperture deviation is less than 5mm;
step two, lowering an anti-floating anchor rod
Lifting the anti-floating anchor rod, and inserting the anti-floating anchor rod into the anchor hole from top to bottom;
step three, grouting
The primary grouting equipment is communicated with a joint of the primary grouting pipe, the secondary grouting equipment is communicated with the secondary supercharging pipe, the primary grouting equipment is started at first, grout enters the anchor holes through the grout outlets synchronously, after the anchor holes are filled with the grout, the primary grouting pipe is closed, crushed stones are filled at the upper ends of the anchor holes, a compacted upper cover is formed at the upper parts of the anchor holes, and then the secondary grouting equipment is started until the anchor holes are filled with the grout, and multi-point grouting is adopted during grouting, so that the compactness is high.
Step four, slurry supplementing
And (5) after the slurry in the anchor hole is solidified, repairing the slurry around the anchor hole and at the upper part.
In the embodiment, during grouting, the grouting is low-pressure grouting, the anchor holes can be rapidly filled in a multi-point grouting mode, slurry at the upper part enters the lower part from a gap between the grading plate and the anchor holes in the process, so that the anchor holes at the lower part are firstly filled with gas, the gas is driven out of the anchor holes, after the slurry is basically filled with the anchor holes, secondary pressurization is performed, at the moment, a compacted upper cover is firstly constructed at the upper part of the anchor holes, and then the secondary pressurization is performed, and the multi-point grouting is performed, and the secondary grouting points are positioned at the opposite sides of the primary grouting points.
Example 2, which is basically the same as example 1, differs in that the structure of the pulp outlet is further described in this example.
In the embodiment, the size of the opening of the slurry outlet of the primary grouting pipe is sequentially increased from top to bottom, the slurry outlet 10 is of a flat hole-shaped structure arranged along the axial direction of the central pipe, the length of the slurry outlet is smaller than that of the baffle 8, the outer side surface of the baffle is provided with a round corner, and the grading plate is provided with a communication hole; the length of baffle is intermittent set up in this embodiment, and the baffle on each layer hierarchical supercharging device and the baffle dislocation set of opposite side, and the grout outlet is dislocation set equally, this kind of structure can form the stop point of dislocation in the anchor eye, promptly when applys the anti-pulling load for the stock, bear the stock load through baffle and classifying plate, then shift to the thick liquid body and the lateral wall of anchor eye, in this in-process, the joint strength of baffle and classifying plate and thick liquid body and the joint strength of thick liquid body and anchor eye are key factors, in embodiment 1, the content can make thick liquid body and anchor eye lateral wall shape produce better laminating, nested connection effect, and dislocation set's baffle can make stock, baffle and classifying plate and thick liquid body have better joint strength.
Meanwhile, in the embodiment, the upper part of the grout outlet 10 is small, the lower part is large, the structure is convenient for the lower part to be filled up quickly, gas is prevented from being detained in the anchor hole during primary grouting, simultaneously, the equal-sized grout outlet can be adopted for grouting during secondary pressurization, and the arrangement of the communicating holes can properly increase the pressure intensity of the lower layer and the upper layer of the grading plate, and enable the grout to penetrate through the grading plate.
Embodiment 3 is substantially the same as embodiment 1 except that the structure of the step-up device in this embodiment is further described.
In this embodiment, the stock is provided with three, and the baffle is provided with three to formed one-level slip casting region, second grade pressure boost region and buffer area in the outside of center tube, all be provided with the grout outlet with one-level slip casting region and second grade pressure boost region intercommunication on one-level slip casting pipe and the second grade pressure boost pipe.
This embodiment has set up three stock 7 and three baffle 8, and this kind of structural arrangement is even, and joint strength is big, and the purpose of baffle is in this embodiment to let thick liquid bypass baffle 8, and can't directly pass through baffle 8, is full of in a regional high pressure back, inwards extrudees other regions from the outside, and then plays the purpose of outside and laminating of anchor eye pore wall.
Example 4 this example is substantially the same as example 1 except that the construction of the grouting port is further described in this example.
In this embodiment, as shown in fig. 9, the upper part of the central tube is provided with an adapter, which comprises a double adapter 13, a sealing plate 15 and a sealing cap 16; the upper end of the central tube 1 is provided with an external thread section 17, a sealing cap 16 is in threaded connection with the external thread section 17, a double joint 13 is matched and sleeved at the inlets of the primary grouting tube and the secondary supercharging tube, a pressing block 14 corresponding to the partition plate is arranged at the middle of the central tube, a sealing plate 15 is arranged at the outer side of the central tube, when matched and sleeved, the double joint is inserted into the corresponding grouting port, the pressing block is pressed on the partition plate, the sealing plate is located at the outer end of the central tube, the sealing cap is sleeved on the sealing plate and the double joint and is in threaded connection with the external thread section, the sealing plate and the pressing block are pressed at the outer end of the central tube in a sealing mode through the pressing of the sealing cap, and the double joint is led out outwards and connected with grouting equipment.
Embodiment 5 is substantially the same as embodiment 1 except that the structure of the baffle plate is further described in this embodiment.
As shown in fig. 7, baffle structures corresponding to baffles are arranged on the upper and lower sides of the classifying plate in the embodiment, so that classifying filling areas which are vertically symmetrical are formed on the upper and lower sides of the classifying plate, and slurry outlets are formed on the upper and lower classifying filling areas; the embodiment can form a stronger supporting structure by taking the grading plate as the center, and the supporting is not only between an integrated structure (the anchor rod, the grading plate and the baffle) and the slurry, but also between the slurry and the anchor holes, so that the pulling strength of the device is further improved.
Claims (10)
1. The utility model provides a hierarchical booster-type anti anchor rod which characterized in that: the grouting device comprises a central pipe, an anchor rod, stirrups and a graded supercharging device, wherein the central pipe is of a hollow structure, and a partition plate is arranged in the central pipe, so that a primary grouting pipe and a secondary supercharging pipe are formed in the central pipe, and the outer sides of the primary grouting pipe and the secondary supercharging pipe are respectively connected with corresponding grouting equipment; the grading supercharging device comprises grading plates and baffle plates, wherein the baffle plates are uniformly distributed and fixed on the lower side surface of the grading plates, the middle parts of the grading plates are matched and sleeved on a central pipe, and meanwhile, the inner sides of the baffle plates are tightly attached to and fixed on the central pipe, so that a plurality of independent grading grouting areas are formed on the outer side of the central pipe, and slurry outlets which enable a primary grouting pipe and a secondary supercharging pipe to be communicated with the grading grouting areas on the corresponding sides are formed on the side wall of the central pipe; the classifying plate equipartition has outside open-ended spacing groove, the sizing outlet is staggered with the baffle fixed point to the spacing groove, and the stock is matchedly fixed in the spacing inslot, the stirrup staple bolt is fixed in the outside of stock.
2. The stepped pressurized anti-float bolt of claim 1, wherein: the size of the opening of the slurry outlet of the primary grouting pipe is sequentially increased from top to bottom.
3. The staged, pressurized anti-float bolt of claim 2, wherein: the slurry outlet is of a flat hole-shaped structure which is arranged along the axis of the central tube, and the length of the slurry outlet is smaller than that of the baffle.
4. A stepped, pressurized, anti-float bolt according to claim 3, wherein: the lateral wall protrusion of baffle is in the classifying plate, the baffle is fixed on the classifying plate perpendicularly.
5. The stepped pressurized anti-float bolt of claim 1, wherein: the stirrups and the graded supercharging device are alternately arranged on the central tube and the anchor rods.
6. The stepped pressurized anti-float bolt of claim 1, wherein: the utility model discloses a grouting device, including the central tube, the stock is provided with the area, the stock is provided with three, the baffle is provided with three to formed one-level slip casting area, second grade pressure boost area and buffer area in the outside of central tube, all be provided with on one-level slip casting pipe and the second grade pressure boost pipe with the grout outlet of one-level slip casting area and second grade pressure boost area intercommunication.
7. The stepped pressurized anti-float bolt of claim 1, wherein: the outer side face of baffle is provided with the fillet, be provided with the intercommunicating pore on the classifying plate.
8. A stepped-boost anti-float bolt according to any one of claims 1 to 7, wherein: the tail ends of the anchor rod and the central tube are fixed on the end head, and the end head is of a frustum-shaped structure.
9. The stepped pressurized anti-float bolt of claim 1, wherein: the upper part of the central tube is provided with an adapter, and the adapter comprises a double joint, a sealing plate and a sealing cap; the upper end of the central tube is provided with an external thread section, the sealing cap is in threaded connection with the external thread section, the double joint is matched and sleeved at the inlets of the primary grouting tube and the secondary supercharging tube, the sealing plate is fixed on the double joint and can be located at the end of the central tube, and the sealing cap is sleeved on the sealing plate and the double joint and in threaded connection with the external thread section.
10. The method for constructing a stepped-pressurizing type anti-floating anchor according to claim 1, comprising the steps of;
step one, cleaning a site and positioning an opening;
cleaning a construction site, positioning and drawing lines according to a construction drawing, determining a hole opening position, opening holes to a specified depth by using a drilling machine, and cleaning the hole wall by using an air compressor;
step two, the anti-floating anchor rod is lowered;
lifting the anti-floating anchor rod, and inserting the anti-floating anchor rod into the anchor hole from top to bottom;
step three, grouting;
the first-stage grouting equipment is communicated with a joint of the first-stage grouting pipe, the second-stage grouting equipment is communicated with the second-stage supercharging pipe, first-stage grouting equipment is started, grout enters the anchor holes through the grout outlets respectively, after the anchor holes are filled with the grout, the first-stage grouting pipe is closed, crushed stones are filled at the upper ends of the anchor holes, a compacted ventilation upper cover is formed at the upper parts of the anchor holes, and then the second-stage grouting equipment is started until the anchor holes are filled with the grout;
step four, supplementing slurry;
and (5) after the slurry in the anchor hole is solidified, repairing the slurry around the anchor hole and at the upper part.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0885947A (en) * | 1994-09-19 | 1996-04-02 | Ground Eng Kk | Grout injecting hose and method for grout injection |
| KR20090130515A (en) * | 2008-06-16 | 2009-12-24 | 주식회사 포스코건설 | Foundation fixed anchor system and the soft foundation anchor construction technique for which this was used |
| CN203530975U (en) * | 2013-10-25 | 2014-04-09 | 曾庆义 | Anchor bolt |
| CN104074190A (en) * | 2014-06-16 | 2014-10-01 | 成都四海岩土工程有限公司 | Secondary high-pressure grouting expansion bit anchor rod and construction method thereof |
| CN104790392A (en) * | 2015-03-01 | 2015-07-22 | 宁波鸿晨建设有限公司 | Construction device and method for reverse bamboo joint type anti-floating anchor rod |
| CN207847665U (en) * | 2018-01-17 | 2018-09-11 | 深圳市路桥建设集团有限公司 | A kind of classification grouted anchor bar |
| KR102233686B1 (en) * | 2020-08-11 | 2021-03-30 | 오상봉 | Multi-step grouting device and underground grouting construction method using it |
| CN113338356A (en) * | 2021-06-17 | 2021-09-03 | 中国水利水电第七工程局有限公司 | Anti-floating anchor rod construction structure and construction method thereof |
| CN215629929U (en) * | 2021-07-16 | 2022-01-25 | 中国建筑第二工程局有限公司 | Novel site operation structure of anti-floating anchor rod |
-
2022
- 2022-04-29 CN CN202210465122.2A patent/CN114855792B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0885947A (en) * | 1994-09-19 | 1996-04-02 | Ground Eng Kk | Grout injecting hose and method for grout injection |
| KR20090130515A (en) * | 2008-06-16 | 2009-12-24 | 주식회사 포스코건설 | Foundation fixed anchor system and the soft foundation anchor construction technique for which this was used |
| CN203530975U (en) * | 2013-10-25 | 2014-04-09 | 曾庆义 | Anchor bolt |
| CN104074190A (en) * | 2014-06-16 | 2014-10-01 | 成都四海岩土工程有限公司 | Secondary high-pressure grouting expansion bit anchor rod and construction method thereof |
| CN104790392A (en) * | 2015-03-01 | 2015-07-22 | 宁波鸿晨建设有限公司 | Construction device and method for reverse bamboo joint type anti-floating anchor rod |
| CN207847665U (en) * | 2018-01-17 | 2018-09-11 | 深圳市路桥建设集团有限公司 | A kind of classification grouted anchor bar |
| KR102233686B1 (en) * | 2020-08-11 | 2021-03-30 | 오상봉 | Multi-step grouting device and underground grouting construction method using it |
| CN113338356A (en) * | 2021-06-17 | 2021-09-03 | 中国水利水电第七工程局有限公司 | Anti-floating anchor rod construction structure and construction method thereof |
| CN215629929U (en) * | 2021-07-16 | 2022-01-25 | 中国建筑第二工程局有限公司 | Novel site operation structure of anti-floating anchor rod |
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