CN113445545A - Underwater steel structure connection point evacuation grouting protection structure and protection construction method - Google Patents
Underwater steel structure connection point evacuation grouting protection structure and protection construction method Download PDFInfo
- Publication number
- CN113445545A CN113445545A CN202110726250.3A CN202110726250A CN113445545A CN 113445545 A CN113445545 A CN 113445545A CN 202110726250 A CN202110726250 A CN 202110726250A CN 113445545 A CN113445545 A CN 113445545A
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- Prior art keywords
- protection
- protective cover
- grouting
- steel structure
- evacuation
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 230000001681 protective effect Effects 0.000 claims abstract description 87
- 229920002457 flexible plastic Polymers 0.000 claims abstract description 27
- 229920003023 plastic Polymers 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000008602 contraction Effects 0.000 claims description 28
- 239000011083 cement mortar Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 10
- 239000011440 grout Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 7
- 239000013535 sea water Substances 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 238000004891 communication Methods 0.000 claims 1
- 210000001503 joint Anatomy 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/06—Constructions, or methods of constructing, in water
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention relates to an underwater steel structure connection point evacuation grouting protection structure and a protection construction method, wherein the underwater steel structure comprises a steel member (1), the steel structure connection point of the steel member (1) is provided with an evacuation grouting protection structure, the evacuation grouting protection structure comprises a protective cover (4), the protective cover (4) is sleeved outside the steel structure connection point to wrap the steel structure connection point, and the protective cover (4) is provided with an evacuation pipe (8) for evacuating moisture/air in the protective cover (4) and a grouting pipe (9) for pressing grouting material (7) into the protective cover (4). The protective cover (4) comprises a rigid plastic protective cover used for land construction and a flexible plastic protective cover used for underwater construction. Compared with the prior art, the underwater steel structure connecting point protecting device is simple and efficient to operate, can effectively protect underwater steel structure connecting points, and prolongs the service life of the structure.
Description
Technical Field
The invention relates to a protection technology of offshore wind power or other underwater steel structure connection points in structural engineering, in particular to an underwater steel structure connection point evacuation grouting protection structure and a protection construction method.
Background
At present, the offshore wind power steel structure has large development amount and wide range. The general volume of aquatic steel construction is great, if all weld at high altitude scene and become whole, the high altitude welding degree of difficulty is big with high costs, is difficult for the assurance quality, and the construction cycle is long, can not satisfy the engineering progress requirement.
Therefore, the offshore steel structure is changed into a factory manufacturing of large pieces as much as possible, and then the large pieces are connected into a whole structure by bolting to a small number of centralized nodes on site. The on-site bolt connection has the advantages of good structural performance and quick construction, but the bolt connection must meet the requirement of corrosion resistance in seawater.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an underwater steel structure connection point evacuation grouting protection structure and a protection construction method.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a steel construction tie point evacuation grouting protective structure under water, includes the protection casing, the protection casing establish steel construction tie point outside with steel construction tie point parcel wherein, the protection casing on be equipped with the pipe of managing and be used for the mud jacking pipe in the protection casing of managing and being used for impressing the grout material into of moisture/air in the evacuation protection casing.
Preferably, the protective cover comprises a rigid plastic protective cover for use in land construction.
Preferably, the protective cover comprises a flexible plastic protective cover for underwater construction.
Preferably, the top and the bottom of the protective cover are correspondingly provided with an upper contraction opening and a lower contraction opening, and when the upper contraction opening and the lower contraction opening are tightened, the top and the bottom of the protective cover are in contact with a steel structure to form sealing edges.
Preferably, the evacuation pipe is arranged at the upper part of the protective cover, and the mud jacking pipe is arranged at the lower part of the protective cover.
Preferably, the grout fills the entire volume within the shield.
Preferably, the grouting material comprises cement mortar with polyester fibers.
Preferably, the steel structure connecting point include the steel member of butt joint, the tip that the steel member butt joint be equipped with the ring flange, the ring flange on be equipped with the bolt hole that is used for bolt fixed connection, the bolt pass the bolt hole with the steel member butt joint.
A protection construction method of an underwater steel structure connection point is provided, which is based on the underwater steel structure connection point evacuation grouting protection structure to carry out protection construction on the land of the underwater steel structure connection point, and the construction method comprises the following steps:
selecting a rigid plastic protective cover, sleeving the rigid plastic protective cover outside the steel structure connecting point, and simultaneously tightening the upper contraction opening and the lower contraction opening;
pressing cement mortar with polyester fibers into the rigid plastic protective cover through a grouting pipe, pumping out gas in the rigid plastic protective cover through a vacuum pipe, and filling the whole volume of the rigid plastic protective cover with the cement mortar;
and maintaining the rigid plastic protective cover joint after the evacuation grouting.
A protection construction method of an underwater steel structure connection point is disclosed, which is based on the underwater steel structure connection point evacuation grouting protection structure to carry out protection construction on the underwater steel structure connection point underwater, and the construction method comprises the following steps:
selecting a flexible plastic protective cover, sleeving the flexible plastic protective cover outside the steel structure connecting point, and simultaneously tightening the upper contraction opening and the lower contraction opening;
pumping away the seawater in the flexible plastic protective cover through an evacuation pipe, wherein the flexible plastic protective cover is close to the steel structure connection point;
pressing cement mortar with polyester fibers into the flexible plastic protective cover through a grouting pipe, rising residual water in the flexible plastic protective cover and pumping out the residual water through a vacuum pipe, and filling the whole volume of the flexible plastic protective cover with the cement mortar;
and maintaining the nodes of the flexible plastic protective covers after evacuation and grouting.
Compared with the prior art, the invention has the following advantages:
(1) according to the invention, the steel structure connecting points are wrapped in the protective cover, and the grouting material is filled in the protective cover, so that the steel structure connecting points can be effectively protected, the risk of seawater corrosion of the steel structure connecting points can be effectively reduced, and the service life of the structure is prolonged;
(2) the protective cover is a plastic protective cover, is simple and efficient to produce and use, is suitable for protecting various underwater steel structure connecting points, and has high cost performance;
(3) according to the invention, the protective cover and the grouting material therein are used for protecting the steel structure connection point, so that the problems of bolt loosening and the like in the later period are avoided, and the later maintenance cost is reduced;
(4) the protective cover is a flexible plastic protective cover and a rigid plastic protective cover, the flexible plastic protective cover is used in underwater construction, the rigid plastic protective cover is used in onshore construction, the flexible plastic protective cover can meet the requirements of various construction environments, and the applicability is wide.
Drawings
Fig. 1 is a schematic structural view of an evacuation grouting protection structure for an underwater steel structure connection point.
In the figure, 1 is a steel member, 2 is a flange plate, 3 is a bolt, 4 is a protective cover, 5 is an upper contraction opening, 6 is a lower contraction opening, 7 is grouting material, 8 is an evacuation pipe, and 9 is a grouting pipe.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. Note that the following description of the embodiments is merely a substantial example, and the present invention is not intended to be limited to the application or the use thereof, and is not limited to the following embodiments.
Examples
As shown in fig. 1, the embodiment provides a grouting protection structure for evacuating a steel structure connecting point underwater, which includes a protective cover 4, wherein the protective cover 4 is sleeved outside the steel structure connecting point to wrap the steel structure connecting point, and the protective cover 4 is provided with an evacuating pipe 8 for evacuating moisture/air in the protective cover 4 and a grouting pipe 9 for pressing grouting material 7 into the protective cover 4. The steel construction tie point is including the steel member 1 of butt joint, the tip of 1 butt joints of steel member be equipped with ring flange 2, ring flange 2 on be equipped with the bolt hole that is used for 3 fixed connection of bolt, bolt 3 pass the bolt hole with 1 butt joint of steel member. Evacuation pipe 8 sets up on protection casing 4 upper portion, and grout pipe 9 sets up in protection casing 4 lower part, and evacuation pipe 8 evacuates moisture (sea water) or air in with protection casing 4, makes protection casing 4 press close to the steel construction tie point, and grout pipe 9 impresses grout material 7 protection casing 4, and remaining moisture rises to take out through evacuation pipe 8, and grout pipe 9 fills whole volumes in protection casing 4, and grout material 7 is including taking polyester fiber's cement mortar.
In a preferred embodiment, the top and the bottom of the protective cover 4 are correspondingly provided with an upper contraction opening 5 and a lower contraction opening 6, when the upper contraction opening 5 and the lower contraction opening 6 are tightened, the top and the bottom of the protective cover 4 are in contact with a steel structure and form a sealing edge, the upper contraction opening 5 and the lower contraction opening 6 are arranged to facilitate the construction site to sleeve the protective cover 4 on the steel member 1, then the connecting point of the steel member 1 is fixedly connected, and finally the position of the protective cover 4 is adjusted to tighten the upper contraction opening 5 and the lower contraction opening 6 of the protective cover 4.
The shield 4 comprises a plastic shield, and in a preferred embodiment, the shield 4 comprises a flexible plastic shield and a rigid plastic shield. The flexible plastic protective cover is suitable for underwater construction, and the rigid plastic protective cover is suitable for land construction, can meet various construction environment requirements, and is wide in applicability.
The construction steps of the evacuation grouting protection structure for the underwater steel structure connecting point are specifically described as follows:
a. respectively manufacturing a steel member 1, a flange plate 2, bolts 3 and a protective cover 4 (comprising a flexible plastic protective cover and a rigid plastic protective cover) according to design requirements;
b. the upper steel member 1 and the lower steel member 1 are respectively welded with flange plates 2, and the joints are sleeved in the protective cover 4 in advance;
c. the upper flange plate 2 and the lower flange plate 2 are aligned, bolts 3 penetrate through the flange plates 2 through bolt holes, the bolts 3 are screwed, and the upper steel member 1 and the lower steel member 1 are connected;
d. if the underwater construction is carried out, a flexible plastic protective cover is adopted, and an upper contraction opening 5 at the upper part and a lower contraction opening 6 at the lower part of the protective cover 4 are tightened;
e. the seawater in the protective cover 4 is pumped away through the evacuation pipe 8 at the upper part of the protective cover 4, so that the protective cover 4 is close to the connecting node;
f. pressing the cement mortar of the polyester fiber into the protective cover 4 through a grouting pipe 9 at the lower part of the protective cover 4, rising the residual water in the protective cover 4 and extracting the residual water through an evacuating pipe 8 at the upper part of the protective cover 4, and filling the whole volume with the cement mortar;
g. maintaining the node of the flexible plastic sleeve evacuation grouting protection cover 4 at the underwater steel structure connection point;
h. if on-land construction is carried out, a rigid plastic protective cover is adopted, cement mortar with polyester fibers is manually sprayed and filled at a complex site connected on site, then the protective cover 4 is sleeved and fixed by a stainless steel bolt 3, cement mortar with polyester fibers is pressed into the protective cover 4 through a mud jacking pipe 9, a flexible plastic protective cover is adopted, internal gas rises and is pumped out through a pumping pipe 8, the cement mortar is filled to the full volume, and finally the node of the rigid plastic sleeve pumping grouting protective cover 4 at the steel structure connecting point is maintained.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a grout protective structure is managed to find time to steel construction tie point under water, a serial communication port, including protection casing (4), protection casing (4) cover establish outside with steel construction tie point parcel wherein, protection casing (4) on be equipped with and be used for evacuating manage (8) and be used for grouting material (7) mud jacking pipe (9) of impressing into protection casing (4) of moisture/air in protection casing (4).
2. An underwater steel structure connection point evacuation grouting protection structure according to claim 1, characterized in that the protection cover (4) comprises a rigid plastic protection cover for land construction.
3. The underwater steel structure connection point evacuation grouting protection structure as claimed in claim 1, wherein the protection cover (4) comprises a flexible plastic protection cover for underwater construction.
4. The underwater steel structure connecting point evacuation grouting protection structure according to claims 1-3, characterized in that an upper contraction opening (5) and a lower contraction opening (6) are correspondingly arranged at the top and the bottom of the protection cover (4), and when the upper contraction opening (5) and the lower contraction opening (6) are tightened, the top and the bottom of the protection cover (4) are in contact with the steel structure and form a sealing edge.
5. The underwater steel structure connection point evacuation grouting protection structure as claimed in claim 1, wherein the evacuation pipe (8) is arranged at the upper part of the protection cover (4), and the grouting pipe (9) is arranged at the lower part of the protection cover (4).
6. An underwater steel structure connection point evacuation grouting protection structure according to claim 1, characterized in that the grouting material (7) fills the entire volume in the protection cover (4).
7. The underwater steel structure connection point evacuation grouting protection structure as claimed in claim 1, wherein the grouting material (7) comprises cement mortar with polyester fiber.
8. The underwater steel structure connecting point evacuation grouting protection structure as claimed in claim 1, wherein the steel structure connecting point comprises butted steel members (1), a flange (2) is arranged at the butted end of the steel members (1), bolt holes for fixedly connecting bolts (3) are arranged on the flange (2), and the bolts (3) penetrate through the bolt holes to butt the steel members (1).
9. A protection construction method for an underwater steel structure connection point is characterized in that the method is based on the underwater steel structure connection point evacuation grouting protection structure of claim 4, and the protection construction of the underwater steel structure connection point on the land is carried out, and the construction method comprises the following steps:
selecting a rigid plastic protective cover, sleeving the rigid plastic protective cover outside the steel structure connecting point, and simultaneously tightening the upper contraction opening (5) and the lower contraction opening (6);
pressing cement mortar with polyester fibers into the rigid plastic protective cover through a grouting pipe (9), pumping gas in the rigid plastic protective cover up through a pumping pipe (8), and filling the whole volume of the rigid plastic protective cover with the cement mortar;
and maintaining the rigid plastic protective cover joint after the evacuation grouting.
10. A protection construction method for an underwater steel structure connection point is characterized in that the method is based on the underwater steel structure connection point evacuation grouting protection structure of claim 4, and the protection construction is carried out on the underwater steel structure connection point underwater, and the construction method comprises the following steps:
a flexible plastic protective cover is selected and sleeved outside the steel structure connecting point, and the upper contraction opening (5) and the lower contraction opening (6) are tightened at the same time;
the seawater in the flexible plastic protective cover is pumped away through an evacuation pipe (8), and the flexible plastic protective cover is close to the steel structure connection point;
pressing cement mortar with polyester fibers into the flexible plastic protective cover through a grouting pipe (9), rising residual water in the flexible plastic protective cover and drawing out the residual water through a vacuumizing pipe (8), and filling the whole volume of the flexible plastic protective cover with the cement mortar;
and maintaining the nodes of the flexible plastic protective covers after evacuation and grouting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726250.3A CN113445545A (en) | 2021-06-29 | 2021-06-29 | Underwater steel structure connection point evacuation grouting protection structure and protection construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726250.3A CN113445545A (en) | 2021-06-29 | 2021-06-29 | Underwater steel structure connection point evacuation grouting protection structure and protection construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113445545A true CN113445545A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110726250.3A Pending CN113445545A (en) | 2021-06-29 | 2021-06-29 | Underwater steel structure connection point evacuation grouting protection structure and protection construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011032744A (en) * | 2009-08-03 | 2011-02-17 | Jfe Steel Corp | Corrosion preventing structure and corrosion preventing method for marine steel structure steel member |
| CN110318498A (en) * | 2019-06-24 | 2019-10-11 | 天元建设集团有限公司 | A kind of assembled architecture combined type connection system and its construction method |
| CN210316021U (en) * | 2019-07-30 | 2020-04-14 | 宜春发投远大装配式建筑有限公司 | Connecting node waterproof construction |
| CN211313085U (en) * | 2019-09-17 | 2020-08-21 | 上海绿地建设(集团)有限公司 | Steel structure box column member |
| CN112853946A (en) * | 2021-03-18 | 2021-05-28 | 长安大学 | Grouting sleeve, grouting sleeve connected assembled pier and construction method thereof |
-
2021
- 2021-06-29 CN CN202110726250.3A patent/CN113445545A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011032744A (en) * | 2009-08-03 | 2011-02-17 | Jfe Steel Corp | Corrosion preventing structure and corrosion preventing method for marine steel structure steel member |
| CN110318498A (en) * | 2019-06-24 | 2019-10-11 | 天元建设集团有限公司 | A kind of assembled architecture combined type connection system and its construction method |
| CN210316021U (en) * | 2019-07-30 | 2020-04-14 | 宜春发投远大装配式建筑有限公司 | Connecting node waterproof construction |
| CN211313085U (en) * | 2019-09-17 | 2020-08-21 | 上海绿地建设(集团)有限公司 | Steel structure box column member |
| CN112853946A (en) * | 2021-03-18 | 2021-05-28 | 长安大学 | Grouting sleeve, grouting sleeve connected assembled pier and construction method thereof |
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Application publication date: 20210928 |