CN110565710A - foundation ring loosening and reinforcing treatment scheme - Google Patents

foundation ring loosening and reinforcing treatment scheme Download PDF

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Publication number
CN110565710A
CN110565710A CN201910731968.4A CN201910731968A CN110565710A CN 110565710 A CN110565710 A CN 110565710A CN 201910731968 A CN201910731968 A CN 201910731968A CN 110565710 A CN110565710 A CN 110565710A
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CN
China
Prior art keywords
grouting
hole
foundation ring
holes
drilling
Prior art date
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Pending
Application number
CN201910731968.4A
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Chinese (zh)
Inventor
苏俊
林权
王日成
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State Power Investment Group Jiangsu New Energy Co Ltd
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State Power Investment Group Jiangsu New Energy Co Ltd
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Priority to CN201910731968.4A priority Critical patent/CN110565710A/en
Publication of CN110565710A publication Critical patent/CN110565710A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • E02D27/425Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00Repair of damaged foundations or foundation structures

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The invention relates to the technical field of building construction, in particular to a foundation ring loosening and reinforcing treatment scheme, wherein a grouting material is polyurethane, so that the foundation ring loosening and reinforcing treatment scheme is suitable for both an existing water environment and an anhydrous environment, the blow-drying process is omitted, and the workload is reduced; the vertical dry drilling method is adopted for the grouting holes, so that the drilling is simple and easy to operate; the vertical hole can extend the dust collector pipe into the grouting hole, so that dust is easy to clean, and the pipe is not easy to clamp; high-pressure grouting is adopted, so that gap grouting is more sufficient, and the overall grouting repair quality is high; 1. hole site arrangement: vertically drilling holes on a bearing platform on the outer side of the foundation ring, uniformly and respectively arranging a plurality of drilled holes along the periphery of the foundation ring, wherein the hole diameter is 20mm, the drilled hole interval is about 1000mm, the distance between a hole wall and the foundation ring is determined according to the size of the foundation ring of the fan, the hole wall is tangent to a flange edge on the outer side of the foundation ring, and the depth of the drilled holes is 5-10cm below a flange at the bottom of the foundation ring; 2. drilling: and (4) drilling by adopting a dry drilling method, wherein the aperture is 20mm, and drilling is preferably carried out for cleaning after hole forming.

Description

foundation ring loosening and reinforcing treatment scheme
Technical Field
the invention relates to the technical field of building construction, in particular to a foundation ring loosening and reinforcing treatment scheme.
Background
as is well known, a foundation ring loosening reinforcement treatment scheme is a foundation ring reinforcement treatment scheme for fixing a fan, and is widely used in the field of building construction; the existing foundation ring loosening and reinforcing treatment scheme comprises the following specific steps:
1. mechanical pore-forming:
a customized extra-long drill bit is adopted, the angle is calculated along the foundation ring, the steel bar mesh is avoided, holes are formed on the flange base part of the foundation steel ring and the gap at an oblique crossing machine according to the distance of about 2m, and the depth is about 2 m;
2. Hole cleaning:
filling clear water into the hole, continuously filling compressed air into the bottom of the hole to form pneumatic water, and then discharging the water in the hole by using a drainage device; the cyclic cleaning operation is carried out until the finally discharged water is clear water;
3. drying control:
continuously pressing 60-80 ℃ hot air into the hole to volatilize and control the moisture in the gap between the steel ring and the concrete;
4. pipe burying and seam sealing:
a grouting pipe and a grout overflow pipe are arranged in a hole which is formed by mechanical drilling, a steel pipe extends into the bottom, a cavity with the length of 10cm is reserved at the bottom by a method similar to a water stop ring, and a gap between the upper steel pipe and the hole is blocked by adopting cement-based high-strength composite mortar; the gap between the steel ring and the concrete is sealed by adopting a gap sealing structural adhesive; wherein,
The steps of sealing the seam are as follows:
(1) chiseling grooves with the width of 10mm and the depth of 20mm along the circle of a tower barrel (the outside and the inside of the tower barrel);
(2) removing residues and residual ash in the tank;
(3) sealing seams by structural adhesive;
(4) Maintaining;
5. and (3) low-pressure glue pouring:
pressing the prepared dynamic-load structure pouring adhesive of the epoxy resin into the hole by a high-pressure grouting pump according to actual requirements at low pressure (within 1.5 Mpa), and pouring the dynamic-load adhesive along the hole from the bottom to the base surface until the pouring is full and all the grout overflow pipes discharge grout;
6. And (5) maintenance:
stopping the machine for natural maintenance for more than or equal to 3 days after the glue is poured, and then removing the exposed grouting nozzle;
in the implementation process of the existing foundation ring loosening and reinforcing treatment scheme, the epoxy resin is a grouting material, the requirement on the environmental dryness is high, and the operation procedure is complex; the punching difficulty of the oblique punching is higher; the cleaning difficulty of the holes of the inclined holes is high, and the cleaning pipe is easy to clamp the holes; and the gap grouting filling effect is poor due to low-pressure pouring (within 1.5 MPa), and the overall pouring quality is influenced.
disclosure of Invention
in order to solve the technical problems, the invention provides a polyurethane grouting material, which is suitable for both an existing water environment and an anhydrous environment, saves a drying process and reduces the workload; the vertical dry drilling method is adopted for the grouting holes, so that the drilling is simple and easy to operate; the vertical hole can extend the dust collector pipe into the grouting hole, so that dust is easy to clean, and the pipe is not easy to clamp; and high-pressure grouting is adopted, so that the gap grouting is more sufficient, and the overall grouting repair quality is high.
the invention relates to a foundation ring loosening and reinforcing treatment scheme;
1. hole site arrangement:
vertically drilling holes on a bearing platform on the outer side of the foundation ring, uniformly and respectively arranging a plurality of drilled holes along the periphery of the foundation ring, wherein the hole diameter is 20mm, the drilled hole interval is about 1000mm, the distance between a hole wall and the foundation ring is determined according to the size of the foundation ring of the fan, the hole wall is tangent to a flange edge on the outer side of the foundation ring, and the depth of the drilled holes is 5-10cm below a flange at the bottom of the foundation ring;
2. drilling:
drilling holes by a dry drilling method, wherein the hole diameter is 20mm, drilling holes are preferably cleaned after the holes are formed, a dust collector is adopted, a suction pipe extends to the bottom of the holes, and dust is repeatedly sucked from bottom to top;
3. And (3) endoscopic detection of the drill hole:
The method comprises the following steps of (1) utilizing an endoscopic camera to drill holes and inspect the concrete cracking condition and the cleanliness of the drilled holes in a flange triangular area;
4. a lower slurry injection pipe, an injection cap is installed:
when obvious cracks and gaps exist on the surface of concrete, a grouting pipe is implanted in the drilled hole, a PVC plastic pipe or an iron pipe is adopted, when no obvious cracks and gaps exist on the surface of the concrete, the grouting pipe can not be implanted, a rubber sleeve with the length of 30mm is implanted into the grouting hole according to the technical requirement of high polymer grouting, the concave edge of the injection cap is cleaned by using a special tool, and the injection cap is placed into the end opening of the grouting pipe;
5. grouting:
(1) preparing chemical grouting liquid:
the chemical grouting material is A, B two-component high polymer polyurethane material;
(2) Grouting mode:
pure pressure grouting is adopted, and a special high polymer precise grouting system is adopted;
(3) grouting pressure:
the grouting pressure is initially set to 7 MPa;
(4) grouting:
selecting one position in a hole drilled along a ring as an initial grouting hole, simultaneously opening all grouting pipe valves on two sides of the foundation ring to start grouting, raising the pressure to a preset pressure as soon as possible during grouting, closing corresponding orifice valves if slurry is discharged from adjacent grouting holes, continuing original hole grouting until the grouting of the hole is finished after the grouting end standard is reached, and sequentially performing adjacent hole grouting after single hole grouting is finished until the grouting holes are filled with slurry and the slurry is blown out from other grouting holes or the pressure reaches 7 MPa;
(5) Monitoring the grouting process:
Stopping grouting until grout is blown out or the original cracks of the concrete are widened or new cracks appear;
6. surface sealing treatment:
(1) and (3) carrying out orifice sealing treatment:
After grouting is finished and grout is initially set, removing the hole sealing section of the hole, performing water sealing treatment by adopting materials such as silicone and the like, and leveling the joint of the foundation ring and the bearing platform by adopting a scraper;
(2) and (3) handover section treatment:
and (3) after grouting, inspecting the grouting effect, inspecting the environment to be qualified, and performing water stopping treatment on the upper part by adopting a waterproof coiled material and C40 reinforced water dispersing.
according to the foundation ring loosening and reinforcing treatment scheme, the grouting point is the side face of the whole foundation ring flange.
compared with the prior art, the invention has the beneficial effects that: the grouting material is polyurethane, is suitable for both an existing water environment and an anhydrous environment, saves the drying process and reduces the workload; the vertical dry drilling method is adopted for the grouting holes, so that the drilling is simple and easy to operate; the vertical hole can extend the dust collector pipe into the grouting hole, so that dust is easy to clean, and the pipe is not easy to clamp; and high-pressure grouting is adopted, so that gap grouting is more abundant, and the overall grouting repair quality is high.
drawings
FIG. 1 is a schematic construction diagram of a prior foundation ring loosening and reinforcing treatment scheme before grouting in the implementation process;
FIG. 2 is a schematic construction diagram of grouting in the implementation process of the prior foundation ring loosening reinforcement treatment scheme;
FIG. 3 is a schematic illustration of the construction of the present invention prior to grouting;
FIG. 4 is a schematic illustration of the construction of the invention after grouting;
in the drawings, the reference numbers: 1. a concrete base; 2. a cavity; 3. a foundation ring; 4. grouting holes; 5. grouting a rear cavity; 6. a gap; 7. bleeding; 8. a grouting pipe; 9. and (5) grouting caps.
Detailed Description
the following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
as shown in fig. 1 to 4, the foundation ring loosening reinforcement treatment scheme of the present invention;
1. hole site arrangement:
vertically drilling holes on a bearing platform on the outer side of the foundation ring, uniformly and respectively arranging a plurality of drilled holes along the periphery of the foundation ring, wherein the hole diameter is 20mm, the drilled hole interval is about 1000mm, the distance between a hole wall and the foundation ring is determined according to the size of the foundation ring of the fan, the hole wall is tangent to a flange edge on the outer side of the foundation ring, and the depth of the drilled holes is 5-10cm below a flange at the bottom of the foundation ring;
2. drilling:
drilling holes by a dry drilling method, wherein the hole diameter is 20mm, drilling holes are preferably cleaned after the holes are formed, a dust collector is adopted, a suction pipe extends to the bottom of the holes, and dust is repeatedly sucked from bottom to top;
3. And (3) endoscopic detection of the drill hole:
the method comprises the following steps of (1) utilizing an endoscopic camera to drill holes and inspect the concrete cracking condition and the cleanliness of the drilled holes in a flange triangular area;
4. a lower slurry injection pipe, an injection cap is installed:
when obvious cracks and gaps exist on the surface of concrete, a grouting pipe is implanted in the drilled hole, a PVC plastic pipe or an iron pipe is adopted, when no obvious cracks and gaps exist on the surface of the concrete, the grouting pipe can not be implanted, a rubber sleeve with the length of 30mm is implanted into the grouting hole according to the technical requirement of high polymer grouting, the concave edge of the injection cap is cleaned by using a special tool, and the injection cap is placed into the end opening of the grouting pipe;
5. grouting:
(1) preparing chemical grouting liquid:
the chemical grouting material is A, B two-component high polymer polyurethane material;
(2) grouting mode:
pure pressure grouting is adopted, and a special high polymer precise grouting system is adopted;
(3) grouting pressure:
the grouting pressure is initially set to 7 MPa;
(4) grouting:
selecting one position in a hole drilled along a ring as an initial grouting hole, simultaneously opening all grouting pipe valves on two sides of the foundation ring to start grouting, raising the pressure to a preset pressure as soon as possible during grouting, closing corresponding orifice valves if slurry is discharged from adjacent grouting holes, continuing original hole grouting until the grouting of the hole is finished after the grouting end standard is reached, and sequentially performing adjacent hole grouting after single hole grouting is finished until the grouting holes are filled with slurry and the slurry is blown out from other grouting holes or the pressure reaches 7 MPa;
(5) Monitoring the grouting process:
stopping grouting until grout is blown out or the original cracks of the concrete are widened or new cracks appear;
6. surface sealing treatment:
(1) and (3) carrying out orifice sealing treatment:
After grouting is finished and grout is initially set, removing the hole sealing section of the hole, performing water sealing treatment by adopting materials such as silicone and the like, and leveling the joint of the foundation ring and the bearing platform by adopting a scraper;
(2) and (3) handover section treatment:
after grouting, the grouting effect is checked, the environment is cleaned after the grouting is qualified, and the upper part adopts waterproof coiled materials and C40 reinforcement water-dispersing and water-stopping treatment
according to the scheme for reinforcing the loosening of the foundation ring, the grouting material is polyurethane, so that the method is suitable for both an existing water environment and an anhydrous environment, the drying process is omitted, and the workload is reduced; the vertical dry drilling method is adopted for the grouting holes, so that the drilling is simple and easy to operate; the vertical hole can extend the dust collector pipe into the grouting hole, so that dust is easy to clean, and the pipe is not easy to clamp; and high-pressure grouting is adopted, so that gap grouting is more abundant, and the overall grouting repair quality is high.
According to the foundation ring loosening and reinforcing treatment scheme, the grouting point is the side face of the whole foundation ring flange; the distance between the grouting point and the bottom of the foundation ring is shortened, the grouting pressure is improved, and the grouting compactness is improved.
according to the foundation ring loosening and reinforcing treatment scheme, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the foundation ring loosening and reinforcing treatment scheme can be implemented as long as the beneficial effects of the foundation ring loosening and reinforcing treatment scheme can be achieved.
the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (2)

1. a foundation ring loosening and reinforcing treatment scheme; it is characterized in that the preparation method is characterized in that,
1) hole site placement:
vertically drilling holes on a bearing platform on the outer side of the foundation ring, uniformly and respectively arranging a plurality of drilled holes along the periphery of the foundation ring, wherein the hole diameter is 20mm, the drilled hole interval is about 1000mm, the distance between a hole wall and the foundation ring is determined according to the size of the foundation ring of the fan, the hole wall is tangent to a flange edge on the outer side of the foundation ring, and the depth of the drilled holes is 5-10cm below a flange at the bottom of the foundation ring;
2) drilling:
drilling holes by a dry drilling method, wherein the hole diameter is 20mm, drilling holes are preferably cleaned after the holes are formed, a dust collector is adopted, a suction pipe extends to the bottom of the holes, and dust is repeatedly sucked from bottom to top;
3) endoscopic detection of a borehole:
the method comprises the following steps of (1) utilizing an endoscopic camera to drill holes and inspect the concrete cracking condition and the cleanliness of the drilled holes in a flange triangular area;
4) lower injection tube, mounting injection cap:
When obvious cracks and gaps exist on the surface of concrete, a grouting pipe is implanted in the drilled hole, a PVC plastic pipe or an iron pipe is adopted, when no obvious cracks and gaps exist on the surface of the concrete, the grouting pipe can not be implanted, a rubber sleeve with the length of 30mm is implanted into the grouting hole according to the technical requirement of high polymer grouting, the concave edge of the injection cap is cleaned by using a special tool, and the injection cap is placed into the end opening of the grouting pipe;
5) grouting:
(1) preparing chemical grouting liquid:
the chemical grouting material is A, B two-component high polymer polyurethane material;
(2) Grouting mode:
pure pressure grouting is adopted, and a special high polymer precise grouting system is adopted;
(3) grouting pressure:
the grouting pressure is initially set to 7 MPa;
(4) grouting:
selecting one position in a hole drilled along a ring as an initial grouting hole, simultaneously opening all grouting pipe valves on two sides of the foundation ring to start grouting, raising the pressure to a preset pressure as soon as possible during grouting, closing corresponding orifice valves if slurry is discharged from adjacent grouting holes, continuing original hole grouting until the grouting of the hole is finished after the grouting end standard is reached, and sequentially performing adjacent hole grouting after single hole grouting is finished until the grouting holes are filled with slurry and the slurry is blown out from other grouting holes or the pressure reaches 7 MPa;
(5) monitoring the grouting process:
Stopping grouting until grout is blown out or the original cracks of the concrete are widened or new cracks appear;
6) surface sealing treatment:
(1) and (3) carrying out orifice sealing treatment:
after grouting is finished and grout is initially set, removing the hole sealing section of the hole, performing water sealing treatment by adopting materials such as silicone and the like, and leveling the joint of the foundation ring and the bearing platform by adopting a scraper;
(2) And (3) handover section treatment:
And (3) after grouting, inspecting the grouting effect, inspecting the environment to be qualified, and performing water stopping treatment on the upper part by adopting a waterproof coiled material and C40 reinforced water dispersing.
2. the foundation ring loosening reinforcement scheme of claim 1 wherein the grout points are the entire sides of the foundation ring flange.
CN201910731968.4A 2019-08-09 2019-08-09 foundation ring loosening and reinforcing treatment scheme Pending CN110565710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910731968.4A CN110565710A (en) 2019-08-09 2019-08-09 foundation ring loosening and reinforcing treatment scheme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910731968.4A CN110565710A (en) 2019-08-09 2019-08-09 foundation ring loosening and reinforcing treatment scheme

Publications (1)

Publication Number Publication Date
CN110565710A true CN110565710A (en) 2019-12-13

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CN201910731968.4A Pending CN110565710A (en) 2019-08-09 2019-08-09 foundation ring loosening and reinforcing treatment scheme

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114438844A (en) * 2020-11-03 2022-05-06 江苏北极星交通产业集团有限公司 Ground penetrating radar-based pavement structure recessive disease detection and treatment method
CN117722122A (en) * 2023-10-23 2024-03-19 宁夏大学新华学院 Broken area crack rock mass grouting equipment that takes of geotechnical engineering fault

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CN109056698A (en) * 2018-09-19 2018-12-21 南方工程检测修复技术研究院 The method that blower concrete foundation cavity is repaired using high polymer
CN109629843A (en) * 2019-01-08 2019-04-16 重庆市十八土鑫诚灌浆防水工程有限公司 A kind of construction method for distress in concrete reparation

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114438844A (en) * 2020-11-03 2022-05-06 江苏北极星交通产业集团有限公司 Ground penetrating radar-based pavement structure recessive disease detection and treatment method
CN117722122A (en) * 2023-10-23 2024-03-19 宁夏大学新华学院 Broken area crack rock mass grouting equipment that takes of geotechnical engineering fault

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