CN115162422A - Mold bag solidified soil construction method for preventing scouring of offshore wind power pile foundation - Google Patents
Mold bag solidified soil construction method for preventing scouring of offshore wind power pile foundation Download PDFInfo
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- CN115162422A CN115162422A CN202210936604.1A CN202210936604A CN115162422A CN 115162422 A CN115162422 A CN 115162422A CN 202210936604 A CN202210936604 A CN 202210936604A CN 115162422 A CN115162422 A CN 115162422A
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- solidified soil
- soil
- pile foundation
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- scouring
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- 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
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
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- 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
- E02D15/10—Placing gravel or light material under water inasmuch as not provided for elsewhere
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- 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
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Wind Motors (AREA)
Abstract
The application discloses a mould bag solidified soil construction method for offshore wind power pile foundation anti-scouring, which comprises the following steps: drying and crushing soil; stirring the solidified soil; filling solidified soil; sealing the solidified soil in the mold bag; and (5) throwing and filling solidified soil in the mold bag. This application is through going into the mould bag with the filling of the solidified soil who prepares, then throws the mould bag solidified soil and fills to waiting to backfill erode in the hole, because the guard action of mould bag to solidified soil, solidified soil mud receives the influence of rivers less, can fall into completely and erode in the hole. After the solidified soil in the mold bags is soaked by water flow, the solidified soil is gradually solidified, and the surfaces of different mold bags are soaked by the solidified soil slurry and are mutually bonded, so that the solidified soil of the mold bags in the scouring pit becomes a uniform whole, and the construction quality of the scouring prevention engineering of the offshore wind power pile foundation is further ensured.
Description
Technical Field
The application belongs to the technical field of offshore wind power, and particularly relates to a mold bag solidified soil construction method for preventing scouring of an offshore wind power pile foundation.
Background
A single pile and pile group foundation is one of widely used structural forms of offshore wind turbines. The offshore wind power pile foundation is built, the pile foundation changes the original hydrodynamic condition of the area, the downcut flow generated by the water flow effect due to structural separation can erode the seabed around the pile foundation, and the transport balance of the silt built originally is broken, so that the seabed around the pile foundation is subjected to a strong scouring effect, and a scouring pit is formed. At present, pile foundation erosion protection becomes an important link of offshore wind power foundation design, and a solidified soil protection technology is taken as a pile foundation erosion prevention technology which is established in recent years and has a brand-new outcrop angle in offshore wind power pile foundation erosion prevention engineering.
The foundation scour pit of the offshore wind power pile foundation is usually positioned tens of meters below the sea level, and the ocean current is turbulent, so that higher requirements are provided for the construction process of backfilling the solidified soil. The traditional solidified soil backfill construction process is characterized in that prepared solidified soil slurry is directly filled into a scouring pit in a blowing mode, and the solidified soil slurry is directly contacted with water and is easily dispersed by seabed water flow in the filling process, so that the solidified soil backfill efficiency is greatly reduced, the construction quality of scour prevention engineering is affected, the actual solidified soil filling amount is far higher than the theoretical amount, and the construction uncertainty and the engineering cost are increased.
Therefore, a novel solidified soil construction method for preventing scouring of the offshore wind power pile foundation is urgently needed to practically solve the problem in backfilling construction of the offshore wind power pile foundation.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the technical problem to be solved by the application is to provide the mould bag solidified soil construction method for preventing the offshore wind power pile foundation from scouring.
In order to solve the technical problem, the application is realized by the following technical scheme:
the application provides a mould bag solidified soil construction method for offshore wind power pile foundation scour prevention, which comprises the following steps:
drying and crushing a soil body;
stirring the solidified soil;
filling solidified soil;
sealing the solidified soil in the mold bag;
and (5) throwing and filling solidified soil in the mold bag.
Optionally, the above method for constructing a mold bag solidified soil for preventing erosion of an offshore wind power pile foundation, wherein the drying and crushing of the soil body includes: and airing or drying the prepared soil, and then crushing.
Optionally, in the construction method of the mold bag solidified soil for preventing scouring of the offshore wind power pile foundation, the drying temperature is 100 ℃.
Optionally, in the above construction method for the anti-scouring mould bag solidified soil for the offshore wind power pile foundation, the grain size of the soil body after the crushing treatment is less than or equal to 2mm.
Further optionally, in the method for constructing the mold bag solidified soil for preventing the offshore wind power pile foundation from being scoured, the particle size of the soil body after the crushing treatment is less than or equal to 1.5mm.
Optionally, the above method for constructing the mold bag solidified soil for preventing the offshore wind power pile foundation from being scoured includes: the cement, the crushed soil body, the curing agent and the like are metered and stirred.
Optionally, in the construction method of the mould bag solidified soil for preventing the offshore wind power pile foundation from scouring, the stirring treatment time is 5-10 minutes.
Optionally, the above method for constructing the mold bag solidified soil for preventing the offshore wind power pile foundation from being scoured includes: and filling the stirred solidified soil into mold bags.
Optionally, the method for constructing the mold bag solidified soil for preventing the offshore wind power pile foundation from being scoured includes: and sealing the filled mold bag for later use.
Optionally, the above method for constructing the mold bag solidified soil for preventing the offshore wind power pile foundation from being scoured includes: and (4) throwing the prepared mould bag solidified soil into the scouring pit through a throwing and filling device until the scouring pit is filled.
Compared with the prior art, the method has the following technical effects:
this application is through going into the mould bag with the filling of the solidified soil who prepares, then throws the mould bag solidified soil and fills to waiting to backfill erode in the hole, because the guard action of mould bag to solidified soil, solidified soil mud receives the influence of rivers less, can fall into completely and erode in the hole. After the solidified soil in the mold bags is soaked by water flow, the solidified soil is gradually solidified, and the surfaces of different mold bags are soaked by the solidified soil slurry and are mutually bonded, so that the solidified soil of the mold bags in the scouring pit becomes a uniform whole, and the construction quality of the scouring prevention engineering of the offshore wind power pile foundation is further ensured.
The method can effectively prevent the solidified soil from being dispersed by water flow, improves the effectiveness of pile foundation backfill construction to a great extent, and is simple in operation, convenient in construction technology and wide in application prospect.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1: the flow chart of the construction method of the mould bag solidified soil for preventing the offshore wind power pile foundation from scouring is provided.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, in one embodiment of the present application, a method for constructing a mold bag solidified soil for protecting an offshore wind power pile foundation from erosion includes:
drying and crushing soil;
stirring the solidified soil;
filling solidified soil;
sealing the curing soil in the mold bag;
and (5) throwing and filling solidified soil in the mold bag.
In the embodiment, the prepared solidified soil is filled into the mold bag, and then the mold bag solidified soil is thrown and filled into the scouring pit to be backfilled, and the solidified soil slurry is less influenced by water flow due to the protection effect of the mold bag on the solidified soil, and can completely fall into the scouring pit. After the solidified soil in the mold bags is soaked by water flow, the solidified soil is gradually solidified, and the surfaces of different mold bags are soaked by the solidified soil slurry and are mutually bonded, so that the solidified soil of the mold bags in the scouring pit becomes a uniform whole, and the construction quality of the scouring prevention engineering of the offshore wind power pile foundation is further ensured. This embodiment can effectively prevent that the solidified soil from being broken away by rivers, and to a great extent ground has improved the validity of pile foundation backfill construction, and this technology easy operation, construction technology is convenient etc..
The following description will be given by way of different embodiments.
Example 1
In the anti-scouring engineering of a certain offshore wind power single-pile foundation, the diameter of a maximum scouring pit of the foundation is about 15 meters, the maximum scouring depth is about 3 meters, and the backfilling amount is about 500m 3 。
Step 1: and drying the prepared soil at 100 ℃ by using a dryer, and crushing the dried soil by using a crusher, wherein the particle size of the crushed dry soil is about 0.8-1.5mm.
Step 2: according to the proportion, the cement, the crushed dry soil, the curing agent and the like are measured and put into a stirrer for stirring for 10 minutes, and at the moment, the dry material of the cured soil is basically uniform and consistent.
And step 3: and (3) subpackaging the stirred solidified soil dry material into mold bags according to the proportion of 25 kg/bag by using an integrated subpackaging machine, and then sealing by using a sealing machine. And then the split-packaged curing soil of the mold bags is stacked orderly for later use.
And 4, step 4: and determining the backfill position of the mould bag solidified soil according to the scanning result, and then throwing and filling the prepared mould bag solidified soil into the scouring pits around the pile body until the scouring pits are filled. The mould bag solidified soil in the scouring pit is gradually solidified after being soaked by seawater, and the surfaces of different mould bags are soaked by the solidified soil slurry and are bonded with each other, so that the mould bag solidified soil in the scouring pit becomes a uniform whole, and the construction quality of the offshore wind power pile foundation anti-scouring engineering is effectively ensured.
Example 2
In the anti-scouring project of the pile foundation of the offshore wind power group pile, the diameter of the maximum scouring pit of a single pile foundation is about 10 meters, the maximum scouring depth is about 2.5 meters, 10 piles are arranged in total, and the total backfill square amount is about 2000m 3 。
Step 1: the method comprises the steps of drying prepared beach soil in sunlight, crushing by using a crusher, filtering out soil particles with the particle size of more than 2mm, wherein the particle size of the crushed dry soil is not more than 2mm.
Step 2: according to the proportion, cement, crushed dry soil, a curing agent and the like are measured and put into a stirrer for stirring for 8 minutes, and at the moment, the dry materials of the cured soil are basically uniform and consistent.
And 3, step 3: and (3) subpackaging the stirred solidified soil dry material into mold bags according to the proportion of 25 kg/bag by using an integrated subpackaging machine, and then sealing by using a sealing machine. And then the split-packaged curing soil of the mold bags is stacked orderly for later use.
And 4, step 4: and determining the backfill position of the mould bag solidified soil according to the scanning result, and then throwing and filling the prepared mould bag solidified soil into the scouring pit around the pile body until the scouring pit is filled. The mould bag solidified soil in the scouring pit is gradually solidified after being soaked by seawater, and the surfaces of different mould bags are soaked by the solidified soil slurry and are bonded with each other, so that the mould bag solidified soil in the scouring pit becomes a uniform whole, and the construction quality of the offshore wind power pile foundation anti-scouring engineering is effectively ensured.
The above embodiments are merely provided to illustrate the technical solutions of the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made in the present invention without departing from the spirit and scope of the present invention and shall be covered by the appended claims.
Claims (9)
1. A mold bag solidified soil construction method for offshore wind power pile foundation anti-scouring is characterized by comprising the following steps:
drying and crushing a soil body;
stirring the solidified soil;
filling solidified soil;
sealing the solidified soil in the mold bag;
and (5) throwing and filling solidified soil in the mold bag.
2. The method for constructing the mold bag solidified soil for the offshore wind power pile foundation anti-scouring according to claim 1, wherein the drying and crushing of the soil body comprises: and airing or drying the prepared soil, and then crushing.
3. The method for constructing the mold bag solidified soil for the offshore wind power pile foundation anti-scouring according to claim 2, wherein the drying temperature is 100 ℃.
4. The method for constructing the mold bag solidified soil for the erosion resistance of the offshore wind power pile foundation according to claim 2, wherein the grain size of the soil body after the crushing treatment is less than or equal to 2mm.
5. The method for constructing the mold bag solidified soil for the offshore wind power pile foundation anti-scouring according to claim 1, wherein the stirring of the solidified soil comprises: the cement, the crushed soil, the curing agent and the like are metered and then stirred.
6. The method for constructing the mold bag solidified soil for the offshore wind power pile foundation anti-scouring according to claim 5, wherein the stirring treatment time is 5-10 minutes.
7. The method for constructing the mold bag solidified soil for offshore wind power pile foundation anti-scouring according to claim 1, wherein the filling of the solidified soil comprises: and filling the stirred solidified soil into mold bags.
8. The method for constructing the anti-scouring mould bag solidified soil for the offshore wind power pile foundation according to any one of claims 1 to 7, wherein the sealing of the mould bag solidified soil comprises the following steps: and sealing the filled mold bag for later use.
9. The method for constructing the mould bag solidified soil for the offshore wind power pile foundation anti-scouring according to any one of the claims 1 to 7, wherein the throwing and filling of the mould bag solidified soil comprises the following steps: and (4) throwing the prepared mould bag solidified soil into the scouring pit through a throwing and filling device until the scouring pit is filled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210936604.1A CN115162422A (en) | 2022-08-05 | 2022-08-05 | Mold bag solidified soil construction method for preventing scouring of offshore wind power pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210936604.1A CN115162422A (en) | 2022-08-05 | 2022-08-05 | Mold bag solidified soil construction method for preventing scouring of offshore wind power pile foundation |
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| CN115162422A true CN115162422A (en) | 2022-10-11 |
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| CN202210936604.1A Pending CN115162422A (en) | 2022-08-05 | 2022-08-05 | Mold bag solidified soil construction method for preventing scouring of offshore wind power pile foundation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100652171B1 (en) * | 2005-07-01 | 2006-12-01 | 한국건설기술연구원 | Scour countermeasures using geobag and aggregates |
| CN113175014A (en) * | 2021-05-26 | 2021-07-27 | 中交第三航务工程局有限公司 | Repair structure and repair method for underwater foundation structure scour pit |
| CN113277816A (en) * | 2020-07-16 | 2021-08-20 | 江苏坤泽科技股份有限公司 | Solidified soil, underwater structure foundation protection structure and construction method |
| CN113833029A (en) * | 2021-07-26 | 2021-12-24 | 江苏在铭建设工程有限公司 | Offshore wind power pile foundation protection, ballast mold bed positioning and underwater sand blowing bag soil fixation construction method |
| CN215367442U (en) * | 2021-06-22 | 2021-12-31 | 武汉二航路桥特种工程有限责任公司 | Solidified soil riverbed scouring protection structure |
-
2022
- 2022-08-05 CN CN202210936604.1A patent/CN115162422A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100652171B1 (en) * | 2005-07-01 | 2006-12-01 | 한국건설기술연구원 | Scour countermeasures using geobag and aggregates |
| CN113277816A (en) * | 2020-07-16 | 2021-08-20 | 江苏坤泽科技股份有限公司 | Solidified soil, underwater structure foundation protection structure and construction method |
| CN113175014A (en) * | 2021-05-26 | 2021-07-27 | 中交第三航务工程局有限公司 | Repair structure and repair method for underwater foundation structure scour pit |
| CN215367442U (en) * | 2021-06-22 | 2021-12-31 | 武汉二航路桥特种工程有限责任公司 | Solidified soil riverbed scouring protection structure |
| CN113833029A (en) * | 2021-07-26 | 2021-12-24 | 江苏在铭建设工程有限公司 | Offshore wind power pile foundation protection, ballast mold bed positioning and underwater sand blowing bag soil fixation construction method |
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