阅读说明：本技术 基础环松动加固处理方案 (foundation ring loosening and reinforcing treatment scheme ) 是由 苏俊 林权 王日成 于 2019-08-09 设计创作，主要内容包括：本发明涉及建筑施工的技术领域,特别是涉及一种基础环松动加固处理方案,其注浆料为聚氨酯,既适用于有水环境,也适用于无水环境,省去了吹干过程,减少工作量；并且注浆孔采用垂直干钻法,打孔简单易操作；并且垂直孔,可将吸尘器管伸进灌浆孔内,便于清灰更容易,且不容易卡管；并且采用高压注浆,缝隙注浆更充实,整体灌浆修复质量高；1.孔位布置：在基础环外侧承台上垂直钻孔,沿基础环周边均匀地分别布置多个钻孔,孔径20mm,钻孔间距约1000mm,依据风机基础环的尺寸,确定孔壁距基础环距离,并且孔壁与基础环外侧法兰边相切,钻孔深度至基础环底法兰下5-10cm；2.钻孔：采用干钻法钻孔,孔径为20mm,成孔后宜进行钻孔清洁。(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.)

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.

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 content of the first and second substances,

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.