CN115478560A - Wall cracking grouting reinforcement method - Google Patents
Wall cracking grouting reinforcement method Download PDFInfo
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- CN115478560A CN115478560A CN202211192984.9A CN202211192984A CN115478560A CN 115478560 A CN115478560 A CN 115478560A CN 202211192984 A CN202211192984 A CN 202211192984A CN 115478560 A CN115478560 A CN 115478560A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000002787 reinforcement Effects 0.000 title claims abstract description 31
- 238000005336 cracking Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 148
- 239000010959 steel Substances 0.000 claims abstract description 148
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 239000011449 brick Substances 0.000 claims abstract description 13
- 238000009877 rendering Methods 0.000 claims abstract 2
- 239000002689 soil Substances 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 238000007569 slipcasting Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005574 cross-species transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/48—Foundations inserted underneath existing buildings or constructions
-
- 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
-
- 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
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
Abstract
The invention discloses a wall cracking grouting reinforcement method, which comprises the following steps: (1) forming a slot hole on the wall body; (2) a U-shaped reaction frame with a downward opening is put into and fixed in the groove hole; (3) a reaction frame is arranged at the top of the U-shaped reaction frame; (4) placing a steel pipe pile below the reaction frame; (5) placing a jack on the steel pipe pile, and pressing the steel pipe pile into the ground bottom by utilizing the reverse downward thrust given by the jack to the steel pipe pile; (6) the jack is moved away; (7) grouting the steel pipe pile by using a grouting pipe through a pile hole at the top of the steel pipe pile; (8) after grouting, removing the grouting pipe and the reaction frame; (9) filling bricks in the U-shaped counter-force frame; and (3) plastering and rendering the brick filled in the hole and the wall surface at the U-shaped counter-force frame to finish the wall cracking reinforcement work. The invention improves the reinforcement convenience, improves the processing quality, reduces the reinforcement cost and is suitable for small-space processing.
Description
Technical Field
The invention relates to the field of pile foundation reinforcement, in particular to a wall cracking grouting reinforcement method.
Background
After the wall body cracks (the wall body cracks, and a large part of the wall body cracks due to the settlement of the foundation), a plurality of reinforcing methods are provided for preventing the wall body from continuously cracking or the crack from expanding, wherein the method of reinforcing the bottom of the wall body by adding the pile foundation is one of the methods (the method is used for reinforcing the ground at the bottom of the wall body and preventing the subsequent ground from continuously cracking or expanding, and the original crack can be repaired by adopting other methods). In the prior art, the mode of grouting and pile foundation adding needs a large construction space, and the steel pipe pile can be pressed into the interior below the wall body. And for some places with small space or places with narrow construction space, the mode of grouting and pile foundation adding is difficult to repair, and only other modes can be adopted for repairing, but the effect is not particularly good in other repairing modes. Therefore, the technical problem is solved by the skilled person in the art.
Disclosure of Invention
The invention aims to provide a wall cracking grouting reinforcement method, which can effectively reduce the reinforcement difficulty of the wall and the reinforcement cost, is suitable for grouting reinforcement of small spaces, and improves the application range.
In order to achieve the purpose, the invention adopts the technical scheme that: a wall cracking grouting reinforcement method comprises the following steps:
(1) a groove hole with the width of 200mm and the height of 1500mm is formed in the wall body above the position where the pile foundation needs to be added;
(2) placing a U-shaped reaction frame with a downward opening in the groove hole, and connecting the U-shaped reaction frame with the wall body through a steel bar nail;
(3) a reaction frame is arranged at the top of the U-shaped reaction frame through a bolt, and a space is reserved between the reaction frame and the ground;
(4) placing the steel pipe pile on the ground in the U-shaped reaction frame, wherein the steel pipe pile is positioned below the reaction frame;
(5) putting a group of jacks on the steel pipe pile, then enabling the jacks to work, enabling output shafts of the jacks to abut against the bottom surface of the reaction frame, giving downward reverse thrust to the steel pipe pile, and pressing the steel pipe pile into the ground;
(6) retracting an output shaft of the jack, and simultaneously moving the jack away from the top of the section of the steel pipe pile;
(7) grouting the steel pipe pile by using the grouting pipe through a pile hole at the top of the steel pipe pile;
(8) after grouting is finished, removing the grouting pipe, and simultaneously removing the counterforce frame from the upper surface of the U-shaped counterforce frame;
(9) filling bricks in the U-shaped counter-force frame, and filling the space in the U-shaped counter-force frame with the bricks;
and (c) plastering and painting the filled bricks and the wall surface at the U-shaped counter-force frame to finish the cracking reinforcement work of the wall body.
In the above technical scheme, the steel pipe pile is composed of a plurality of sections of steel pipe piles, in the step (5), after the bottommost section of steel pipe pile is pressed into the ground bottom, the jack is moved away first, a group of outer sleeve steel pipes are sleeved and welded outside the lower section of steel pipe pile, then the next section of steel pipe pile is placed on the lower section of steel pipe pile and inserted into the reorganized outer sleeve steel pipe, and the outer sleeve steel pipes are welded with the upper section of steel pipe pile to realize the welding of the two sections of steel pipe piles; and then, pressing the upper steel pipe pile section to the ground bottom through a jack, and circulating the steps until all the steel pipe piles of the preset number are pressed into the ground bottom, so that the counter-force pressing operation of the steel pipe piles is realized.
According to the technical scheme, the middle of the steel pipe pile is provided with the grouting cavity, the bottom of the steel pipe pile is provided with the sealing steel plate, the top of the steel pipe pile is welded with the top sealing steel plate, the middle of the top surface of the top sealing steel plate is provided with the screw hole, the bottom of the screw hole is communicated with the grouting cavity, and the bottom of the grouting pipe is connected with the screw hole in a detachable threaded mode.
In the above technical scheme, the U-shaped reaction frame is of a U-shaped structure formed by three groups of U-shaped channel steel.
Among the above-mentioned technical scheme, the steel bar nail is 20 mm's steel bar nail.
In the technical scheme, the top of the reaction frame is provided with a top mounting plate, and the bottom of the reaction frame is provided with a bottom reinforcing plate; the width of top mounting panel is greater than the width of reaction frame, the outer fringe department annular equipartition of top mounting panel has the multiunit through-hole, the multiunit the through-hole set up in the outside top of reaction frame, the top mounting panel passes through the bolt the through-hole with U type counter-force frame links to each other.
Among the above-mentioned technical scheme, when jack output shaft stretches out, the output shaft of jack can support on the bottom surface of bottom gusset plate.
In the technical scheme, two sides of the bottom reinforcing plate extend outwards respectively and are arranged outside two sides of the bottom of the reaction frame.
In the technical scheme, a plurality of groups of grouting holes are annularly and uniformly distributed on the outer surface of the lower part of the steel pipe pile from bottom to top, and the inner ends of the grouting holes are communicated with the grouting cavity.
In the technical scheme, a patch hole is coaxially arranged outside each group of grouting holes, the diameter of the patch hole is larger than that of the grouting hole, and a patch is arranged in each patch hole; in the process that the steel pipe pile is pressed into the ground bottom, the patch can block the grouting hole, so that soil at the ground bottom cannot enter the grouting hole and the steel pipe pile; in the grouting process, slurry in the steel pipe pile can be sent out from the grouting hole, and the patch is pushed away from the patch hole, so that the slurry enters the ground bottom outside the steel pipe pile, and the ground bottom reinforcement is realized.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the invention, the groove hole is directly formed in the wall body, the U-shaped reaction frame is arranged in the groove hole, the reaction frame is arranged in the U-shaped reaction frame, the steel pipe pile is pressed into the ground bottom of the wall body through the jack, namely, the door-type reaction frame is adopted, the reaction force is given to the top of the wall body and the building above the wall body, the safety of the reaction force pile pressing is high, the space occupation can be reduced, meanwhile, the safety of the reaction force pile pressing can be ensured, large-scale or other pile pressing equipment is not required, the renting or purchasing is not required, and the cost can be effectively reduced;
2. according to the invention, the steel pipe pile is directly arranged under the bottom of the wall body, the inside of the steel pipe pile is reinforced by grouting, and the foundation under the wall body is reinforced, so that the settlement of the ground under the wall body is prevented, the subsequent cracking of the wall body is further prevented, and the reinforcing effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a steel pipe pile driving process using a jack according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first embodiment of the present invention after grouting is completed;
FIG. 3 is a schematic structural diagram of brick filling for a U-shaped reaction frame according to a first embodiment of the present invention;
fig. 4 is a schematic structural view of a steel pipe pile according to a first embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of a grouting hole according to an embodiment of the invention.
Wherein: 1. a wall body; 2. a groove hole; 3. a U-shaped reaction frame; 4. reinforcing steel bar nails; 5. a reaction frame; 6. steel pipe piles; 7. a jack; 8. a grouting pipe; 9. bricks; 10. sleeving a steel pipe outside; 11. grouting a cavity; 12. sealing the steel plate; 13. sealing the steel plate at the top; 14. a screw hole; 15. a top mounting plate; 16. a bottom gusset plate; 17. a bolt; 18. grouting holes; 19. a patch hole; 20. and (6) pasting a patch.
Detailed Description
The invention is further described below with reference to the following figures and examples:
the first embodiment is as follows: referring to fig. 1 to 5, a wall cracking grouting reinforcement method comprises the following steps:
(1) a groove hole 2 with the width of 200mm and the height of 1500mm is arranged on the wall body 1 above the position where the pile foundation needs to be added; the bottom of the slot hole is arranged in the soil, and the bottom of the slot hole extends into the soil for a certain distance or is in contact with the top surface of the soil, so that the subsequent steel pipe pile can be conveniently pressed into the soil;
(2) a U-shaped reaction frame 3 with a downward opening is placed in the slot hole and is connected with the wall body through a steel bar nail 4, the steel bar nail is a steel bar nail with the diameter of 20mm, the U-shaped reaction frame is a U-shaped structure formed by three groups of U-shaped steel channels, the thickness of each U-shaped steel channel is 30mm, the distance between two groups of U-shaped steel on the side parts is 140mm, and the distance between the U-shaped steel on the top part and the ground is 1470mm;
(3) a reaction frame 5 is arranged at the top of the U-shaped reaction frame through a bolt, and a space is reserved between the reaction frame and the ground;
(4) placing a steel pipe pile 6 on the ground in the U-shaped reaction frame, wherein the steel pipe pile is positioned below the reaction frame, and the diameter of the steel pipe pile is 115mm;
(5) placing a group of jacks 7 on the steel pipe pile, enabling the jacks to work, enabling output shafts of the jacks to abut against the bottom surface of the reaction frame, giving downward reverse thrust to the steel pipe pile, and pressing the steel pipe pile into the ground bottom; in the embodiment, the tonnage of the jack is selected according to actual conditions, so that the cost is low, and the pressing condition of the steel pipe pile can be met.
(6) Retracting an output shaft of the jack, and simultaneously moving the jack away from the top of the section of the steel pipe pile;
(7) grouting work is carried out on the steel pipe pile through a pile hole in the top of the steel pipe pile by using the grouting pipe 8;
(8) after grouting is finished, removing the grouting pipe, and simultaneously removing the counterforce frame from the upper surface of the U-shaped counterforce frame;
(9) filling bricks 9 in the U-shaped counter-force frame, and filling the space in the U-shaped counter-force frame with the bricks;
and (c) plastering and painting the filled bricks and the wall surface at the U-shaped counter-force frame to finish the cracking reinforcement work of the wall body.
In this embodiment, between open 1500mm 200mm's slot hole on the wall body, the width and the height of slot hole are very little, damage to the wall body can be less in essence, consequently, when it is under construction, can not cause what to destroy former wall body, and simultaneously, when the construction, the jack promotes the in-process that the steel-pipe pile pushed down and enters into the ground end, its counter-force feeds back to on the wall body through reaction frame and U type counter-force frame, then be former building above the wall body, consequently, former wall body and building can bear the counter-force of jack completely, can not cause extra destruction to former wall body and building. The steel-pipe pile can be with the vertically mode like this, disect insertion to the ground bottom of wall body bottom, then carry out the slip casting through the slip casting pipe, make the thick liquid not only enter into the steel-pipe pile in, still can enter into the ground bottom around the steel-pipe pile outside simultaneously, pack the ground bottom and consolidate, be used for consolidating the ground of wall body bottom, can further prevent that the ground of wall body below from appearing subsiding like this, further prevent the follow-up fracture that appears of wall body, be used for improving the security of wall body and top building. In the former mode, even if the ground bottom is reinforced by other modes, the ground bottom is reinforced from the side of the wall body, the ground bottom cannot be directly reinforced from the right below the wall body, and the original reinforcing mode is not good enough.
In the step (5), after the bottommost steel pipe pile is pressed into the ground bottom, the jack is moved away first, a group of outer sleeve steel pipes 10 are sleeved and welded outside the lower steel pipe pile, then the next steel pipe pile is placed on the lower steel pipe pile and inserted into the reorganized outer sleeve steel pipe, and the outer sleeve steel pipes are welded with the upper steel pipe pile to realize the welding of the two steel pipe piles; and then, pressing the upper section of steel pipe pile to the ground bottom through a jack, and repeating the steps until all the steel pipe piles with the preset number are pressed into the ground bottom, so as to realize the counter-force pressing-in work of the steel pipe piles.
In the embodiment, the steel pipe pile is formed by welding and connecting a plurality of sections, so that the steel pipe pile pressing-in method is suitable for the steel pipe pile pressing-in operation in the small space, and meanwhile, due to the adoption of the overhead pressing-in mode, if the steel pipe pile is too long, the middle part of the steel pipe pile is very easy to bend and deform during the pressing-in process. Therefore, the invention adopts the field welding of the multi-section steel pipe piles, and can prevent overlong pressing and bending deformation. Meanwhile, in the embodiment, the jack can adopt a set of jack with a longer stroke, the steel pipe pile can be pressed in at one time, and multiple sets of jacks with different strokes can also be adopted. Assuming that the distance between the reaction frame and the ground is 1200mm, the length of the steel pipe pile is 700mm, and thus 500mm exists between the reaction frame and the ground, and the stroke of one set of jacks with the height of 500mm is not 700mm but only 400mm, so that after the set of jacks is used for pressing down for 400mm, 300mm is not pressed in (900 mm exists between the steel pipe pile and the reaction frame), then another set of jacks with the height of 800mm and the stroke of 600mm is replaced, and only the steel pipe pile needs to be pressed down for 300mm, and the two sets of jacks can be used alternately. If a group of jacks can meet the requirements, a group of jacks is directly adopted. If say that 2 groups of jacks can not satisfy, then adopt 3 groups of jacks can, generally can not exceed 3 groups of jacks, relatively speaking, the process is a little more trivial and more complicated, but the cost still is comparatively cheap, and efficiency is also higher, and the space occupation is also very little.
Referring to fig. 4, a grouting cavity 11 is formed in the middle of the steel pipe pile, a sealing steel plate 12 is arranged at the bottom of the steel pipe pile, a top sealing steel plate 13 is welded at the top of the steel pipe pile, a screw hole 14 (the screw hole forms a pile hole of the steel pipe pile) is formed in the middle of the top surface of the top sealing steel plate, the bottom of the screw hole is communicated with the grouting cavity, and the bottom of the grouting pipe is detachably connected with the screw hole in a threaded manner.
The sealing steel plate is directly sent out from the bottom of the steel pipe pile when preventing grouting, and soil is prevented from entering the steel pipe pile when the pile is pressed. The setting of the sealed steel sheet in top for the installation of slip casting pipe to prevent that the slip casting in-process thick liquid from overflowing owing to soil pressure from the top of steel-pipe pile greatly, guarantee the slip casting quality. And follow-up can dismantle the slip casting pipe, prevent that the slip casting pipe from by follow-up direct burial to the wall body in, the waste that causes, reduce cost.
Referring to fig. 1, a top mounting plate 15 is arranged at the top of the reaction frame, and a bottom reinforcing plate 16 is arranged at the bottom of the reaction frame; the width of top mounting panel is greater than the width of reaction frame, the outer fringe department annular equipartition of top mounting panel has the multiunit through-hole, the multiunit the through-hole set up in the outside top of reaction frame, the top mounting panel passes through bolt 17 the through-hole with U type counter-force frame links to each other.
Through the setting of top mounting panel, the through-hole of reaction frame through top mounting panel and top thereof utilizes the bolt to install the reaction frame on U type reaction frame, realizes dismantling between them and connects, wherein, can reserve the screw at the top of U type reaction frame in advance for be connected reaction frame and U type reaction frame.
When the output shaft of the jack extends out, the output shaft of the jack can abut against the bottom surface of the bottom reinforcing plate. Through the setting of bottom gusset plate, when the output shaft of jack gave the thrust of reaction frame like this, can bear its thrust through bottom gusset plate, the thrust that bottom gusset plate then gave the jack is evenly distributed to the reaction frame on for prevent the local deformation of reaction frame, can enough guarantee normal counter-force pile pressing, simultaneously, can also prevent the damage of reaction frame, guarantee its normal atress.
Referring to fig. 1, two sides of the bottom reinforcing plate extend outward and are disposed outside two sides of the bottom of the reaction frame. Extend the setting outwards, when installing and dismantling reaction frame like this, give operating personnel with the hand, perhaps grasp the both sides of bottom gusset plate with the instrument, play the effect of a lift, stress point, the installation and the dismantlement of the reaction frame of being convenient for.
Referring to fig. 4 and 5, a plurality of groups of grouting holes 18 are annularly and uniformly distributed on the outer surface of the lower part of the steel pipe pile from bottom to top, and the inner ends of the grouting holes are communicated with the grouting cavity.
Through the setting of injected hole, and the injected hole sets up the below surface at steel-pipe pile, and is preferred, set up the injected hole on the surface of a lesson steel-pipe pile in the below, when giving the steel-pipe pile slip casting like this, the thick liquid only can spill over to outside soil in from the injected hole in, just so can spill over outwards from each position in the bottom of steel-pipe pile, the thick liquid can be by carrying out a slip casting by lower supreme gap department to soil and fill, consolidate the soil of wall body below.
As shown in fig. 4 and 5, a patch hole 19 is coaxially arranged outside each group of the grouting holes, the diameter of the patch hole is larger than that of the grouting hole, and a patch 20 is arranged in each group of the patch holes; in the process that the steel pipe pile is pressed into the ground bottom, the patch can block the grouting hole, so that soil at the ground bottom cannot enter the grouting hole and the steel pipe pile; in the grouting process, slurry in the steel pipe pile can be sent out from the grouting hole, the patch is pushed away from the patch hole, and the slurry enters the ground bottom outside the steel pipe pile to realize ground bottom reinforcement.
In this embodiment, the arrangement of the patch hole and the patch blocks the grouting hole through the patch in the process that the steel pipe pile is pressed into the ground bottom, so that the external soil can not enter the steel pipe pile from the grouting hole, and a pile pressing protection effect is achieved. In the subsequent grouting process, when the steel pipe pile is subjected to grouting, the pressure in the steel pipe pile is relatively high, so that the slurry at the bottom can be extruded outwards from the grouting hole, the patch is pushed away from the patch hole, the slurry can be injected into soil from the grouting hole, and high-quality grouting reinforcement work is realized.
Claims (10)
1. A wall cracking grouting reinforcement method comprises the following steps:
(1) a groove hole with the width of 200mm and the height of 1500mm is formed in the wall body above the position where the pile foundation needs to be added;
(2) placing a U-shaped reaction frame with a downward opening in the groove hole, and connecting the U-shaped reaction frame with the wall body through a steel bar nail;
(3) a reaction frame is arranged at the top of the U-shaped reaction frame through a bolt, and a space is reserved between the reaction frame and the ground;
(4) placing the steel pipe pile on the ground in the U-shaped reaction frame, wherein the steel pipe pile is positioned below the reaction frame;
(5) putting a group of jacks on the steel pipe pile, enabling the jacks to work, enabling output shafts of the jacks to abut against the bottom surface of the reaction frame, giving downward reverse thrust to the steel pipe pile, and pressing the steel pipe pile into the ground bottom;
(6) retracting an output shaft of the jack, and simultaneously moving the jack away from the top of the section of the steel pipe pile;
(7) grouting the steel pipe pile by using a grouting pipe through a pile hole at the top of the steel pipe pile;
(8) after grouting is finished, removing the grouting pipe, and simultaneously removing the reaction frame from the upper surface of the U-shaped reaction frame;
(9) filling bricks in the U-shaped counter-force frame, and filling the space in the U-shaped counter-force frame with the bricks;
and (3) plastering and rendering the brick filled in the hole and the wall surface at the U-shaped counter-force frame to finish the wall cracking reinforcement work.
2. The wall body cracking grouting reinforcement method according to claim 1, characterized in that: in the step (5), after the bottommost section of steel pipe pile is pressed into the ground, the jack is moved away firstly, a group of outer sleeve steel pipes are sleeved and welded outside the lower section of steel pipe pile, then the next section of steel pipe pile is placed on the lower section of steel pipe pile and inserted into the reorganized outer sleeve steel pipes, and the outer sleeve steel pipes are welded with the upper section of steel pipe pile to realize the welding of the two sections of steel pipe piles; and then, pressing the upper steel pipe pile section to the ground bottom through a jack, and circulating the steps until all the steel pipe piles of the preset number are pressed into the ground bottom, so that the counter-force pressing operation of the steel pipe piles is realized.
3. The wall body cracking grouting reinforcement method according to claim 1, characterized in that: the middle part of the steel pipe pile is provided with a grouting cavity, the bottom of the steel pipe pile is provided with a sealing steel plate, the top of the steel pipe pile is welded with a top sealing steel plate, the middle part of the top surface of the top sealing steel plate is provided with a screw hole, the bottom of the screw hole is communicated with the grouting cavity, and the bottom of the grouting pipe is connected with the screw hole detachable in a screwed connection mode.
4. The wall body cracking grouting reinforcement method according to claim 1, characterized in that: the U-shaped reaction frame is of a U-shaped structure formed by three groups of U-shaped channel steel.
5. The wall body cracking grouting reinforcement method according to claim 1, characterized in that: the steel bar nail is a 20mm steel bar nail.
6. The wall body cracking grouting reinforcement method according to claim 1, characterized in that: the top of the reaction frame is provided with a top mounting plate, and the bottom of the reaction frame is provided with a bottom reinforcing plate; the width of top mounting panel is greater than the width of reaction frame, the outer fringe department annular equipartition of top mounting panel has the multiunit through-hole, the multiunit the through-hole set up in the outside top of reaction frame, the top mounting panel passes through the bolt the through-hole with U type counter-force frame links to each other.
7. The wall body cracking grouting reinforcement method according to claim 6, characterized in that: when the output shaft of the jack extends out, the output shaft of the jack can abut against the bottom surface of the bottom reinforcing plate.
8. The wall body cracking grouting reinforcement method according to claim 6, characterized in that: the two sides of the bottom reinforcing plate extend outwards respectively and are arranged outside the two sides of the bottom of the reaction frame.
9. The wall body cracking grouting reinforcement method according to claim 3, characterized in that: and a plurality of groups of grouting holes are annularly and uniformly distributed on the outer surface of the lower part of the steel pipe pile from bottom to top, and the inner ends of the grouting holes are communicated with the grouting cavity.
10. The wall body cracking grouting reinforcement method of claim 9, characterized in that: a patch hole is coaxially arranged outside each group of the grouting holes, the diameter of each patch hole is larger than that of each grouting hole, and a patch is arranged in each patch hole; in the process that the steel pipe pile is pressed into the ground bottom, the patch can block the grouting hole, so that soil at the ground bottom cannot enter the grouting hole and the steel pipe pile; in the grouting process, slurry in the steel pipe pile can be sent out from the grouting hole, and the patch is pushed away from the patch hole, so that the slurry enters the ground bottom outside the steel pipe pile, and the ground bottom reinforcement is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211192984.9A CN115478560A (en) | 2022-09-28 | 2022-09-28 | Wall cracking grouting reinforcement method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211192984.9A CN115478560A (en) | 2022-09-28 | 2022-09-28 | Wall cracking grouting reinforcement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265718A (en) * | 2018-03-12 | 2018-07-10 | 中国建筑第八工程局有限公司 | Grouting steel pipe pile foundation stabilization system and its construction method |
| CN112323823A (en) * | 2020-07-21 | 2021-02-05 | 中冶集团武汉勘察研究院有限公司 | Filling device and method for waste air-raid shelter of pile foundation construction site |
| CN113202123A (en) * | 2021-05-12 | 2021-08-03 | 中国水利水电第十一工程局有限公司 | Construction method for treating high-span section strong karst filling and curtain seepage-proofing method |
| US20210348355A1 (en) * | 2018-09-25 | 2021-11-11 | Yongguang GAO | Grouting consolidation method for full casing borehole guide prefabricated pile and prefabricated pile therefor |
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2022
- 2022-09-28 CN CN202211192984.9A patent/CN115478560A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265718A (en) * | 2018-03-12 | 2018-07-10 | 中国建筑第八工程局有限公司 | Grouting steel pipe pile foundation stabilization system and its construction method |
| US20210348355A1 (en) * | 2018-09-25 | 2021-11-11 | Yongguang GAO | Grouting consolidation method for full casing borehole guide prefabricated pile and prefabricated pile therefor |
| CN112323823A (en) * | 2020-07-21 | 2021-02-05 | 中冶集团武汉勘察研究院有限公司 | Filling device and method for waste air-raid shelter of pile foundation construction site |
| CN113202123A (en) * | 2021-05-12 | 2021-08-03 | 中国水利水电第十一工程局有限公司 | Construction method for treating high-span section strong karst filling and curtain seepage-proofing method |
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