CN111021270A - Construction method for permanently protecting existing pipeline during road reconstruction - Google Patents
Construction method for permanently protecting existing pipeline during road reconstruction Download PDFInfo
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- CN111021270A CN111021270A CN201911372739.4A CN201911372739A CN111021270A CN 111021270 A CN111021270 A CN 111021270A CN 201911372739 A CN201911372739 A CN 201911372739A CN 111021270 A CN111021270 A CN 111021270A
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- steel sheet
- pipeline
- sheet piles
- water supply
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
Abstract
The invention discloses a construction method for permanently protecting an existing pipeline during road reconstruction, which comprises the following specific steps: firstly, lofting on the spot according to the pipeline position of the water supply steel pipe, breaking a hard layer of a pavement structure, and inserting and driving steel sheet piles on two sides of the water supply steel pipe along the safe distance range of the pipeline; secondly, erecting a plurality of top anchoring supports on the upper parts of the steel sheet piles on the two sides along the length direction, then excavating foundation pits on the outer sides of the steel sheet piles on the two sides, and pouring side walls and cover plates on the outer sides of the steel sheet piles on the two sides in an inserting and driving mode; then backfilling the foundation pit, pulling out the steel sheet pile, and filling gaps of the steel sheet pile by adopting tracking grouting; and finally, covering prefabricated cover plates on the side walls on the two sides to finish the pipeline protection culvert construction of the water supply steel pipes. The application of the invention can not only avoid disturbance to the soil around the pipeline and meet the requirement of water and soil conservation of the special pipeline, but also reduce the span of the slab culvert and backfill materials in the culvert to the maximum extent and greatly save the construction cost.
Description
Technical Field
The invention relates to the technical field of road reconstruction, in particular to a construction method for permanently protecting an existing pipeline during road reconstruction.
Background
In the process of reconstructing a newly-built road or an old road of a current city, the protection of the existing pipeline below the road is realized by the conventional method of slope-releasing, digging the peripheral soil body of the pipeline, exposing a pipe body, building a side wall outside the safe distance of the pipe body, covering a cover plate, and bearing the road structure load, the vehicle load and the peripheral soil side pressure in the structural form of a cover plate culvert, as shown in figure 1.
However, when the protected pipe has special requirements (such as a high-pressure main water supply pipe), and soil around the pipeline within a certain safe distance range cannot be disturbed, the method has many adverse factors such as increased span of the cover plate culvert, increased stress on the cover plate, larger structural size and the like, thereby having great influence on structural safety and construction cost.
Therefore, how to ensure the permanent protection of the existing pipeline in road reconstruction becomes a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above defects of the prior art, the invention provides a construction method for permanently protecting the existing pipeline during road reconstruction, which can not only avoid disturbance to the soil around the pipeline and meet the requirement of water and soil conservation of the special pipeline, but also reduce the span of the slab culvert and backfill materials in the culvert to the greatest extent and greatly save the construction cost.
In order to achieve the purpose, the invention discloses a construction method for permanently protecting the existing pipeline during road reconstruction, which comprises the following specific steps:
step one, lofting on the spot according to the pipeline position of the water supply steel pipe, breaking a hard layer of a pavement structure, and inserting and driving steel sheet piles at two sides of the water supply steel pipe along the safe distance range of a pipeline;
secondly, erecting a plurality of top anchoring supports on the upper parts of the steel sheet piles on the two sides along the length direction, then excavating foundation pits on the outer sides of the steel sheet piles on the two sides, and pouring side walls and cover plates on the outer sides of the steel sheet piles on the two sides in an inserting and driving mode;
step three, backfilling the foundation pit after the strength of the cover plate and the side walls on the two sides reaches 100%, pulling out the steel sheet pile after backfilling the foundation pit, and filling gaps of the steel sheet pile by adopting tracking grouting when the steel sheet pile is pulled out;
and step four, covering prefabricated cover plates on the side walls on two sides to finish the pipeline protection culvert construction of the water supply steel pipes.
Preferably, in the second step, the size of the construction covering plate includes side walls on two sides; and the other side of the foundation pit on each side is excavated by slope excavation.
The invention has the beneficial effects that:
the application of the invention can not only avoid disturbance to the soil around the pipeline and meet the requirement of water and soil conservation of the special pipeline, but also reduce the span of the slab culvert and backfill materials in the culvert to the maximum extent and greatly save the construction cost.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structure of the prior art.
Fig. 2 is a schematic view illustrating a state in which a steel sheet pile is restrained by anchor bars and an anchor head according to an embodiment of the present invention.
Fig. 3 is a diagram illustrating a state of executing step one according to an embodiment of the present invention.
Fig. 4 is a diagram illustrating a state of executing step two according to an embodiment of the present invention.
Fig. 5 is a diagram illustrating a state of performing step three according to an embodiment of the present invention.
Fig. 6 is a diagram illustrating a state of executing step four according to an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 2 to 4, the construction method for permanently protecting the existing pipeline during road reconstruction specifically comprises the following steps:
step one, lofting on the spot according to the pipeline position of the water supply steel pipe, breaking a hard layer of a pavement structure, and inserting and driving steel sheet piles at two sides of the water supply steel pipe along the safe distance range of a pipeline;
secondly, erecting a plurality of top anchoring supports on the upper parts of the steel sheet piles on the two sides along the length direction, then excavating foundation pits on the outer sides of the steel sheet piles on the two sides, and pouring side walls and cover plates on the outer sides of the steel sheet piles on the two sides in an inserting and driving mode;
step three, backfilling the foundation pit after the strength of the cover plate and the side walls on the two sides reaches 100%, pulling out the steel sheet pile after backfilling the foundation pit, and filling gaps of the steel sheet pile by adopting tracking grouting when the steel sheet pile is pulled out;
and step four, covering prefabricated cover plates on the side walls on two sides to finish the pipeline protection culvert construction of the water supply steel pipes.
The principle of the invention lies in that when a steel sheet pile supporting and anchor pulling system is applied to the construction of a pipeline protection cover plate culvert, the upper part of the steel sheet pile is restrained by anchor pulling steel bars and an anchor head, so that the disturbance of the soil body around the pipeline is avoided, and the excavation of foundation pits at two sides of the steel sheet pile and the pouring of side walls are realized.
In some embodiments, in the second step, the size of the construction covering plate includes side walls on two sides; and the other side of the foundation pit on each side is excavated by slope excavation.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (2)
1. The construction method for permanently protecting the existing pipeline during road reconstruction comprises the following specific steps:
step one, lofting on the spot according to the pipeline position of the water supply steel pipe, breaking a hard layer of a pavement structure, and inserting and driving steel sheet piles at two sides of the water supply steel pipe along the safe distance range of a pipeline;
secondly, erecting a plurality of top anchoring supports on the upper parts of the steel sheet piles on the two sides along the length direction, then excavating foundation pits on the outer sides of the steel sheet piles on the two sides, and pouring side walls and cover plates on the outer sides of the steel sheet piles on the two sides in an inserting and driving mode;
step three, backfilling the foundation pit after the strength of the cover plate and the side walls on the two sides reaches 100%, pulling out the steel sheet pile after backfilling the foundation pit, and filling gaps of the steel sheet pile by adopting tracking grouting when the steel sheet pile is pulled out;
and step four, covering prefabricated cover plates on the side walls on two sides to finish the pipeline protection culvert construction of the water supply steel pipes.
2. The construction method for permanently protecting the existing pipeline in the process of road reconstruction as claimed in claim 1, wherein in the second step, the size of the construction covering plate is equal to the size of the side walls on the two sides of the construction covering plate; and the other side of the foundation pit on each side is excavated by slope excavation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372739.4A CN111021270A (en) | 2019-12-27 | 2019-12-27 | Construction method for permanently protecting existing pipeline during road reconstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372739.4A CN111021270A (en) | 2019-12-27 | 2019-12-27 | Construction method for permanently protecting existing pipeline during road reconstruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111021270A true CN111021270A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911372739.4A Pending CN111021270A (en) | 2019-12-27 | 2019-12-27 | Construction method for permanently protecting existing pipeline during road reconstruction |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202402795U (en) * | 2011-12-28 | 2012-08-29 | 中铁十九局集团有限公司 | Support device for pipelines met during tunneling in water-rich quicksand formation |
| CN204059403U (en) * | 2014-09-02 | 2014-12-31 | 德州市公路工程总公司 | A kind of low embankment existing gas pipeline insulation blocking structure |
| CN105953078A (en) * | 2016-04-29 | 2016-09-21 | 中国冶集团有限公司 | Protection device and protection method of high-pressure gas pipeline |
| CN205839768U (en) * | 2016-07-28 | 2016-12-28 | 上海市城市建设设计研究总院 | Cantilever Steel Sheet Pile foundation pit supporting construction |
| CN107299630A (en) * | 2017-08-17 | 2017-10-27 | 浙江交工集团股份有限公司 | A kind of deep ＆ thick silt matter riverbed piping lane crosses the river double steel plate pile cofferdam structure and construction method |
| CN208039285U (en) * | 2018-02-06 | 2018-11-02 | 广东省基础工程集团有限公司 | One kind is to drawing the double-deck back-up sand steel sheet-pile cofferdam |
| CN208650073U (en) * | 2018-08-06 | 2019-03-26 | 合肥市市政设计研究总院有限公司 | Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction |
-
2019
- 2019-12-27 CN CN201911372739.4A patent/CN111021270A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202402795U (en) * | 2011-12-28 | 2012-08-29 | 中铁十九局集团有限公司 | Support device for pipelines met during tunneling in water-rich quicksand formation |
| CN204059403U (en) * | 2014-09-02 | 2014-12-31 | 德州市公路工程总公司 | A kind of low embankment existing gas pipeline insulation blocking structure |
| CN105953078A (en) * | 2016-04-29 | 2016-09-21 | 中国冶集团有限公司 | Protection device and protection method of high-pressure gas pipeline |
| CN205839768U (en) * | 2016-07-28 | 2016-12-28 | 上海市城市建设设计研究总院 | Cantilever Steel Sheet Pile foundation pit supporting construction |
| CN107299630A (en) * | 2017-08-17 | 2017-10-27 | 浙江交工集团股份有限公司 | A kind of deep ＆ thick silt matter riverbed piping lane crosses the river double steel plate pile cofferdam structure and construction method |
| CN208039285U (en) * | 2018-02-06 | 2018-11-02 | 广东省基础工程集团有限公司 | One kind is to drawing the double-deck back-up sand steel sheet-pile cofferdam |
| CN208650073U (en) * | 2018-08-06 | 2019-03-26 | 合肥市市政设计研究总院有限公司 | Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction |
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Address after: 230041 floors 14, 15, 16, 17 and 18 floors, Yingshang Road West and Yijing Road South, Hefei, Anhui Province Applicant after: HEFEI MUNICIPAL DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Address before: 230041 floor 14, 15, 16, 17, 18, South riotous Nanguo office building, Yingshang Road West, Yijing Road South, Hefei City, Anhui Province Applicant before: HEFEI MUNICIPAL DESIGN AND RESEARCH INSTITUTE Co.,Ltd. |