阅读说明：本技术 悬吊承插型管时管接头加固方法 (Pipe joint reinforcing method during hanging of socket pipe ) 是由 徐鹏程 程小龙 姚鹏飞 王维相 于 2019-11-04 设计创作，主要内容包括：悬吊承插型管时管接头加固方法,所述方法包括如下步骤：1)开挖土方；2)准备一根钢管,并对钢管进行操作；3)清理需悬吊管线外壁；4)放置钢管；5)向钢管与需悬吊管线之间填充填充物；6)用已开孔的钢管扣住需悬吊管线；7)将包裹在需悬吊管线上的上下两部分钢管焊接起来；8)通过已开孔钢管上的灌浆孔向钢管内灌浆,从而将已开孔钢管与需悬吊管线之间的间隙填充起来；9)对已开孔钢管和未开孔钢管内的灌浆料进行养护；10)养护完成,对需悬吊管线进行悬吊。本发明所述的方法借助钢管的支撑,使得管接头与管线形成一个整体,同时通过向钢管与管线之间填充浆料,避免管线在钢管中出现滑移的现象,整个方法步骤紧凑,易于施工。(A method of reinforcing a pipe joint while suspending a female pipe, the method comprising the steps of: 1) excavating earthwork; 2) preparing a steel pipe and operating the steel pipe; 3) cleaning the outer wall of the pipeline to be suspended; 4) placing a steel pipe; 5) filling filler between the steel pipe and the pipeline to be suspended; 6) buckling the pipeline to be suspended by using the steel pipe with the hole; 7) welding an upper part and a lower part of steel pipes wrapped on a pipeline to be suspended; 8) grouting the steel pipe through a grouting hole on the perforated steel pipe, so as to fill the gap between the perforated steel pipe and the pipeline to be hung; 9) curing the grouting materials in the steel pipe with the hole and the steel pipe without the hole; 10) and (5) after the maintenance is finished, hanging the pipeline to be hung. The method provided by the invention has the advantages that the pipe joint and the pipeline form a whole by means of the support of the steel pipe, meanwhile, the slurry is filled between the steel pipe and the pipeline, the phenomenon that the pipeline slides in the steel pipe is avoided, and the whole method is compact in steps and easy to construct.)

1. The pipe joint reinforcing method during hanging of the socket pipe is characterized in that: the method sequentially comprises the following steps:

1) excavating earth so as to expose the joint of the pipeline to be suspended, and reserving an operation space of 100 ~ 500mm below the joint of the pipeline to be suspended;

2) preparing a steel pipe, wherein the length of the steel pipe is 2 ~ 3 times of the length of a joint of a pipeline to be suspended, the wall thickness of the steel pipe is 5mm ~ 10mm, and the pipe diameter of the steel pipe is at least one grade greater than that of the pipeline to be suspended;

3) the steel pipe is operated by the following method: firstly, longitudinally cutting a steel pipe, thereby dividing the steel pipe into an upper part and a lower part which are symmetrical; then, opening holes on half of the steel pipes to form grouting holes;

4) cleaning the outer wall of the pipeline to be suspended by taking the joint of the pipeline to be suspended as a center and cleaning the outer wall of the pipeline to be suspended within the range of 2 ~ 3 times the length of the joint of the pipeline to be suspended;

5) placing the steel pipe, wherein the method comprises the following steps: placing half steel pipes without holes below the joints of the pipelines to be suspended, wrapping the joints of the pipelines to be suspended, and plugging two ends of the joints;

6) filling filler between the steel pipe and the pipeline to be suspended, so that the space between the inner wall of the steel pipe and the outer wall of the pipeline to be suspended is filled;

7) buckling the steel pipe with the hole above the pipeline to be hung, buckling the steel pipe with the hole with the steel pipe not with the hole, and then plugging two ends of the steel pipe with the hole;

8) welding an upper part and a lower part of steel pipes wrapped on a pipeline to be suspended;

9) grouting the steel pipe through a grouting hole on the perforated steel pipe, so as to fill the gap between the perforated steel pipe and the pipeline to be hung;

10) curing the grouting materials in the steel pipe with the hole and the steel pipe without the hole;

11) and (5) after the maintenance is finished, hanging the pipeline to be hung.

2. The method for reinforcing a pipe joint when a bell and spigot pipe is hung according to claim 1, wherein the concrete method in the step 1) is that the upper half part of the pipeline to be hung is exposed, the pipeline in the range of 2 ~ 3 times of the pipe diameter length is completely exposed at the position of the pipeline joint to be hung by taking the pipeline joint as the center, and an operation space of 100 ~ 500mm is reserved below the hanging pipeline.

3. The pipe joint reinforcing method when suspending a female pipe according to claim 2, wherein: and 5) inserting wood wedges into the two ends of the steel pipe during plugging, so that the distance between the steel pipe and the suspension pipeline is controlled, and the steel pipe and the suspension pipeline are ensured to be overlapped.

4. The pipe joint reinforcing method when suspending a female pipe according to claim 3, wherein: and 5) during plugging in the step 5) and the step 7), plugging both ends of the steel pipe by using bast fibers.

5. The pipe joint reinforcing method when suspending a female pipe according to claim 4, wherein: and in the step 6), the filler filled between the steel pipe and the pipeline to be suspended is micro-expansion fine stone concrete above C30 level.

6. The pipe joint reinforcing method when suspending a female pipe according to claim 4, wherein: and 6) filling concrete mortar between the steel pipe and the pipeline to be suspended in the step 6).

7. The pipe joint reinforcing method while suspending the female pipe according to any one of claims 1 to 6, wherein: the curing time in step 10) was 7 days.

8. The method for reinforcing a pipe joint when a female pipe is suspended as claimed in claim 7, wherein in the step 11), when the pipeline to be suspended is suspended, 1 ~ 2 lifting rings are required to be arranged on the steel pipe.

Technical Field

The invention belongs to the technical field of socket type pipe suspension, and particularly relates to a pipe joint reinforcing method in the process of suspending a socket type pipe.

Background

When a foundation pit or a foundation trench is constructed, an underground pipeline often passes through the foundation pit to influence construction, and a steel pipe or a PE pipe with good integrity is generally solved by adopting a suspension mode.

For the spigot-and-socket type interface, the pipe head at the female end has a pipe diameter larger than the pipe diameter of the pipeline, the interface is a pipeline with a large middle and two small sides, and the interface is generally compacted by adopting materials such as rubber rings or asphalt bast fibers.

When the pipeline is suspended, the interface is easy to generate large deformation and leakage due to uneven stress of each hanging point, and even the joint directly falls off. In order to solve the technical problem, the existing construction method comprises the following steps:

the bell and spigot pipeline is changed into a steel pipe or a hot-melt PE pipe and then suspended, or the bell and spigot pipeline is directly changed.

In the two methods, the original pipeline is required to be shut down whether the pipeline is replaced and suspended or changed, and the pipeline cannot convey media after the original pipeline is shut down, so that the operation of property right units and the use of users are influenced.

In addition, the two methods are either pipe replacement suspension or pipe replacement transfer, and a pipeline and a joint are required to be newly arranged during construction, so that the additional cost and the construction time are increased, and the construction efficiency is greatly reduced.

Disclosure of Invention

The invention aims to provide a method for reinforcing a pipe joint when a suspended socket pipe is used fast and does not influence the normal use of an original pipeline.

In order to solve the technical problems, the invention provides the following technical scheme: the pipe joint reinforcing method during hanging of the socket pipe sequentially comprises the following steps:

1) excavating earth to form an excavation line, exposing a joint of a pipeline to be suspended, and reserving an operation space of 100 ~ 500mm below the joint of the pipeline to be suspended;

2) preparing a steel pipe, wherein the length of the steel pipe is 2 ~ 3 times of the length of a joint of a pipeline to be suspended, the wall thickness of the steel pipe is 5mm ~ 10mm, and the pipe diameter of the steel pipe is at least one grade greater than that of the pipeline to be suspended;

3) the steel pipe is operated by the following method: firstly, longitudinally cutting a steel pipe, thereby dividing the steel pipe into an upper part and a lower part which are symmetrical; then, opening holes on half of the steel pipes to form grouting holes;

4) cleaning the outer wall of the pipeline to be suspended by taking the joint of the pipeline to be suspended as a center and cleaning the outer wall of the pipeline to be suspended within the range of 2 ~ 3 times the length of the joint of the pipeline to be suspended;

5) placing the steel pipe, wherein the method comprises the following steps: placing half steel pipes without holes below the joints of the pipelines to be suspended, wrapping the joints of the pipelines to be suspended, and plugging two ends of the joints;

6) filling filler between the steel pipe and the pipeline to be suspended, so that the space between the inner wall of the steel pipe and the outer wall of the pipeline to be suspended is filled;

7) buckling the steel pipe with the hole above the pipeline to be hung, buckling the steel pipe with the hole with the steel pipe not with the hole, and then plugging two ends of the steel pipe with the hole;

8) welding an upper part and a lower part of steel pipes wrapped on a pipeline to be suspended to form a welding seam;

9) grouting the steel pipe through a grouting hole on the perforated steel pipe, so as to fill the gap between the perforated steel pipe and the pipeline to be hung;

10) curing the grouting materials in the steel pipe with the hole and the steel pipe without the hole;

11) and (5) after the maintenance is finished, hanging the pipeline to be hung.

The concrete method in the step 1) comprises the steps of exposing the upper half part of the pipeline to be suspended, completely exposing the pipeline within the pipe diameter length range of 2 ~ 3 times at the position of the pipeline joint to be suspended by taking the pipeline joint as the center, and reserving an operation space of 100 ~ 500mm below the suspended pipeline.

And 5) inserting wood wedges into the two ends of the steel pipe during plugging, so that the distance between the steel pipe and the suspension pipeline is controlled, and the steel pipe and the suspension pipeline are ensured to be overlapped.

And 5) during plugging in the step 5) and the step 7), plugging both ends of the steel pipe by using bast fibers.

And in the step 6), the filler filled between the steel pipe and the pipeline to be suspended is micro-expansion fine stone concrete above C30 level.

And 6) filling concrete mortar between the steel pipe and the pipeline to be suspended in the step 6).

The curing time in step 10) was 7 days.

In step 11), when the pipeline to be suspended is suspended, 1 ~ 2 lifting rings need to be arranged on the steel pipe.

Through the technical scheme, the invention has the beneficial effects that: the method has the advantages of compact steps, simple and convenient construction, easy operation and low requirement on the skill of workers in the whole process; meanwhile, the construction method has low cost and wide material source, and does not need large-scale equipment; in addition, the construction method is stable and reliable, after reinforcement, the pipeline joint to be suspended and the pipeline to be suspended can form a rigid whole, and the problems that the joint is deformed and further the joint is penetrated or damaged and the like due to uneven stress of each suspension point when the bell and spigot pipe joint is suspended are solved; finally, the construction method has high implementation performance, and after the whole steel pipe is cut into two halves, the requirement on the seam flatness is not high, and the common gas cutting on site is used.

Drawings

FIG. 1 is a flow chart of the reinforcement method of the present invention;

FIG. 2 is a schematic view of the joint fixation at the socket joint;

FIG. 3 is view 1-1 of FIG. 2;

fig. 4 is a view 2-2 of fig. 2.

Detailed Description