CN112726654A - Method for installing anchor bolt assembly of offshore wind turbine generator system - Google Patents
Method for installing anchor bolt assembly of offshore wind turbine generator system Download PDFInfo
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- CN112726654A CN112726654A CN202011406757.2A CN202011406757A CN112726654A CN 112726654 A CN112726654 A CN 112726654A CN 202011406757 A CN202011406757 A CN 202011406757A CN 112726654 A CN112726654 A CN 112726654A
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- anchor bolt
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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
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
An installation method of an offshore wind turbine anchor bolt assembly comprises the following steps: preparing a positioning anchor bolt component and a common anchor bolt component; preparing an anchor bolt cage construction supporting platform on land, installing a lower anchor plate, and placing the installed lower anchor plate on the anchor bolt cage construction supporting platform through a crane; installing the upper anchor plate, hoisting the installed upper anchor plate to the position right above the lower anchor plate by using a crane, and then installing a positioning anchor bolt assembly; mounting a common anchor bolt component; adjusting the installed anchor bolt cage; hoisting the adjusted anchor bolt cage onto a ship, conveying the anchor bolt cage to an offshore machine position of an offshore wind turbine foundation platform, mounting a support component on a lower anchor plate, and then placing the anchor bolt cage on an embedded part on the offshore wind turbine foundation platform and fixing the anchor bolt cage through the support component; an embedded part is preset on the offshore wind turbine foundation platform; and adjusting and fixing the anchor bolt cage again. The invention can reduce the working strength of constructors and improve the installation and construction efficiency of the anchor bolt assembly.
Description
Technical Field
The invention relates to an anchor bolt assembly mounting method, in particular to an anchor bolt assembly mounting method applied to a prestressed foundation of an offshore wind generating set.
Background
The prestressed fan foundation is a novel wind generating set foundation technology provided by the countries such as the United states and Canada in the early twenty-first century, can effectively solve the problems of low construction efficiency, poor bending and overturning resistance, poor adaptability to application environment working conditions, complex and difficult control of hidden quality troubles and the like of the traditional gravity type foundation ring foundation, and has excellent anti-slip, anti-overturning and environment-resistant performances. With the rapid development of the domestic wind power market, most domestic host manufacturers formulate the technical requirements of field construction suitable for supporting the foundation structural member of the onshore wind power unit, but the offshore prestressed fan foundation is just started at present, and the installation of the offshore wind power anchor bolt assembly is greatly different from onshore wind power.
Disclosure of Invention
The invention provides an installation method of an anchor bolt assembly for an offshore wind generating set, which reduces the working strength of constructors and improves the installation and construction efficiency of the anchor bolt assembly, and in order to solve the technical problems, the invention is realized by the following technical scheme:
the invention adopts the following technical scheme:
an installation method of an offshore wind turbine anchor bolt assembly comprises the following steps:
a: preparing a positioning anchor bolt component and a common anchor bolt component;
b: preparing an anchor bolt cage construction supporting platform on land, installing a lower anchor plate, and placing the installed lower anchor plate on the anchor bolt cage construction supporting platform through a crane;
c: installing the upper anchor plate, hoisting the installed upper anchor plate to the position right above the lower anchor plate by using a crane, and then installing a positioning anchor bolt assembly;
d: mounting a common anchor bolt component;
e: adjusting the installed anchor bolt cage;
f: hoisting the adjusted anchor bolt cage onto a ship, conveying the anchor bolt cage to an offshore machine position of an offshore wind turbine foundation platform, mounting a support component on a lower anchor plate, and then placing the anchor bolt cage on an embedded part on the offshore wind turbine foundation platform and fixing the anchor bolt cage through the support component; an embedded part is preset on the offshore wind turbine foundation platform;
g: and adjusting and fixing the anchor bolt cage again.
The step A comprises the following steps:
a01: preparation of the positioning anchor assembly: screwing a nylon nut into the long threaded end of the anchor bolt serving as a positioning anchor bolt, so that the distance from the top end of the long threaded end of the anchor bolt to the nylon nut is L1, and screwing a locking nut into the other end of the anchor bolt, so that the distance from the top end of the long threaded end of the anchor bolt to the locking nut is L2;
a02: preparation of a conventional anchor bolt assembly: screwing a locking nut into the lower end of the anchor bolt serving as a common anchor bolt, so that the top end of the long threaded end of the anchor bolt is spaced from the locking nut by a distance L2;
a03: and placing the prepared positioning anchor bolt assembly and the common anchor bolt assembly for standby.
The step B comprises the following steps:
b01: distinguishing the upper surface and the lower surface of the lower anchor plate according to the identifier of the lower anchor plate, and then butting the two anchor plate semi-rings according to the production identifier;
b02: the two connecting plates are respectively arranged above and below the lower anchor plate, the hexagonal bolt head is arranged above the connecting plate, and the nut is positioned below the connecting plate arranged at the lower part of the lower anchor plate;
b03: respectively measuring the hole distances of anchor bolt holes at two sides of the connecting plate, simultaneously measuring the hole distance in any vertical direction, checking the attaching degree of the connecting plate and the anchor plate when the three dimensional errors do not exceed a set value, and fastening a nut at the lower part of the lower anchor plate with a hexagon bolt;
b04: after the connecting plate is fastened, 2 scribed lines are scribed at the position of the tangent line of the excircle of the 3 rd anchor bolt hole from the edge of the connecting plate of the lower anchor plate by using a marking pen, and 2 scribed lines are scribed in the vertical direction, wherein 4 scribed lines are formed;
b05: and (4) moving the lower anchor plate to the anchor bolt cage construction supporting platform by using a crane, and adjusting the flatness of the lower anchor plate.
The step C comprises the following steps:
c01: according to the mark on the upper anchor plate, the upper surface and the lower surface are distinguished, and then the two anchor plate semi-rings are butted according to the production mark;
c02: two connecting plates are arranged above and below the upper anchor plate, a hexagonal bolt head is arranged above the connecting plates, and a nut is arranged below the connecting plate below the upper anchor plate;
c03: respectively measuring the hole distances of anchor bolt holes at two sides of the connecting plate, simultaneously measuring the hole distance in any vertical direction, and fastening a nut at the lower part of the upper anchor plate with a hexagon bolt when the three dimensional errors do not exceed a set value;
c04: if the upper anchor plate is manufactured in a whole ring, skipping the steps C01-C04;
c05: 2 scribed lines are scribed at the excircle tangent position of the 8 th anchor bolt hole from the edge of the upper anchor plate connecting plate by using a marker pen, and 2 scribed lines are scribed in the vertical direction, wherein 4 scribed lines are formed;
c06: hoisting the upper anchor plate by a crane to move to a certain distance right above the lower anchor plate, and ensuring the alignment of the scribing positions of the upper anchor plate and the lower anchor plate; then the upper end of an anchor bolt of the positioning anchor bolt assembly is penetrated into an anchor bolt hole of the upper anchor plate, the lower end of the anchor bolt is penetrated into a corresponding anchor bolt hole of the lower anchor plate, and after a locking nut is tightly attached to the lower anchor plate, a gasket is added below the lower anchor plate and the nut is screwed down; at the moment, the upper end of the positioning anchor bolt component exposes N fastening threads on the upper surface of the anchor plate, and the nut is screwed on the top end of the anchor bolt.
The step D comprises the following steps:
d01: an installer inclines the common anchor bolt component by a certain angle, the upper end of the anchor bolt penetrates into the anchor plate hole of the upper anchor plate, the lower end of the anchor bolt of the common anchor bolt component penetrates into the lower anchor plate after the common anchor bolt component is lifted, and after the bottom surface of the locking nut is tightly attached to the lower anchor plate, a gasket is added below the lower anchor plate and the nut is manually screwed;
d02: after the positioning anchor bolt component and the common anchor bolt component are installed, the upper anchor plate is placed down by a crane and is placed on the nylon nut at the upper end of the positioning anchor bolt component.
The step E comprises the following steps:
e01: anchor points are arranged at the positions of every 90 degrees around the anchor bolt cage, and then the upper anchor plate is tensioned by a steel wire rope and a rope tightener; the hanging wire weight adjusts the verticality, adjusts the steel wire ropes in 4 directions to be tensioned and evenly stressed, and locks the steel wire ropes after the adjustment is finished;
e02: adjusting the position of a nylon nut to ensure that the length of the upper end of the positioning anchor bolt assembly exposed out of the upper anchor plate meets a set value, locking the nylon nut and the nut to clamp the upper anchor plate tightly, adjusting the levelness of the upper anchor plate by using the locking nut and the nut at the lower end of the anchor bolt, and checking and adjusting the distance between the upper anchor plate and the lower anchor plate to meet the requirement;
e03: adjusting the positions of the locking nuts and the nuts at the lower ends of the rest of the anchor bolts to ensure that the length of the upper anchor plate exposed out of the upper end of the anchor bolt meets a set length threshold; checking that the screwing torque requirement of a nut at the lowermost end of the anchor bolt is 300 N.m, and the exposed screw thread of the anchor bolt is not less than 3 threads or 2 threads;
e04: sleeving a temporary protective cap on the upper end of the anchor bolt;
e05: reporting and checking;
e06: after acceptance check is qualified, the two channel-section steels of cross welding are consolidated on the lower anchor plate, 4 channel-section steels are used for cross welding and consolidation in the middle of the anchor bolt cage, the middle reinforcing channel-section steel is welded on the lower surface of the upper anchor plate, and the junction point is welded to strengthen the overall stability of the anchor bolt cage.
The invention has the beneficial effects that:
the invention can reduce the working strength of constructors and improve the installation and construction efficiency of the anchor bolt assembly.
Drawings
FIG. 1 is a layout view of an offshore anchor assembly of the present invention;
FIG. 2 is a schematic view of the positioning anchor assembly of the present invention showing the distance between the nuts installed;
FIG. 3 is a schematic view of the distance between the nuts of a conventional anchor assembly of the present invention;
FIG. 4 is a schematic illustration of the installation of the onshore anchor cage of the present invention;
FIG. 5 is a schematic diagram of an anchor bolt cage installation of the offshore wind turbine foundation platform according to the present invention.
FIG. 6 is a schematic view of the anchor hole spacing measurement of the present invention.
Fig. 7 is a schematic view of the lower anchor plate scoring location of the present invention.
FIG. 8 is a schematic view of the position of the upper anchor plate scoring line of the present invention.
Figure 9 is a schematic view of the anchor installation of the present invention.
Figure 10 is a schematic view of the anchor installation of the present invention.
Figure 11 is a schematic view of the anchor installation of the present invention.
The reference numbers illustrate: 1-mounting an anchor plate; 2-a common anchor bolt assembly; 3-positioning the anchor bolt assembly; 4-a support assembly; 5-lower anchor plate; 6-embedded parts; 7-offshore wind turbine foundation platform; 8-a protective cap; 9-a support seat; 10-a line pendant; 11-channel steel; 12-anchor cages; 101-anchor bolt; 102-a nut; 103-a spacer; 104-nylon nuts; 105-a locking nut; 106-connecting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Therefore, the following detailed description of the embodiments of the present invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention, on the basis of which all other embodiments, obtained by a person of ordinary skill in the art without inventive faculty, fall within the scope of the invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
For better understanding of the present invention, the method for installing the anchor bolt assembly of the offshore wind turbine system according to the present invention will be described in detail with reference to fig. 1 to 5.
Referring to fig. 1, there is shown a general anchor assembly and positioning anchor assembly layout of the present invention. Figure 2 shows a schematic view of the positioning anchor assembly nut installation distance. Figure 3 illustrates a conventional anchor assembly nut installation distance diagram. Figure 4 shows a land-based anchor cage installation schematic. FIG. 5 shows a schematic diagram of anchor bolt cage installation on an offshore wind turbine foundation platform.
The method for installing the anchor bolt assembly of the offshore wind turbine generator system comprises the following steps of firstly preparing a platform of an anchor bolt cage construction supporting seat 9 on land for installing the anchor bolt cage on land before implementing the following steps. Meanwhile, an embedded part 6 is arranged on an offshore wind turbine foundation platform 7 and used for fixing an anchor bolt cage installed on land, the embedded part generally comprises an embedded plate and embedded foot hooks, the embedded foot hooks and the embedded part are poured together, and the concrete structure of the embedded part is as shown in fig. 1.
The method comprises the following specific steps:
a: preparing a positioning anchor bolt component 3 and a common anchor bolt component 2;
b: preparing an anchor bolt cage construction supporting platform on land, then installing the lower anchor plate 5, and placing the installed lower anchor plate 5 on the anchor bolt cage construction supporting platform 9 through a crane;
c: installing the upper anchor plate 1, hoisting the installed upper anchor plate 1 to be right above the lower anchor plate 5 by using a crane, and then installing a positioning anchor bolt component 3;
d: mounting the common anchor bolt component 2;
e: adjusting the installed anchor bolt cage 12;
f: hoisting the adjusted anchor bolt cage 12 to a ship, conveying the anchor bolt cage to an offshore machine site of an offshore wind turbine foundation platform 7, then installing a supporting component on the lower anchor plate 5, and then placing the anchor bolt cage 12 on an embedded part 6 on the offshore wind turbine foundation platform and fixing the anchor bolt cage through the supporting component; an embedded part 6 is preset on the offshore wind turbine foundation platform 7;
g: the anchor cage 12 is adjusted and fixed again.
In the above steps, the preparation of the anchor bolt assembly can be carried out after the installation of the lower anchor plate 5 is completed, and the steps are changed without affecting the implementation of the method of the present invention. It is also possible to carry out the installation of the upper anchor plate 1 first, then the installation of the lower anchor plate 5, and then the other steps, again without affecting the implementation of the method of the invention.
In the above step a of the present invention, when preparing the positioning anchor bolt assemblies 3 and the common anchor bolt assemblies 2, it is only necessary to select different numbers of anchor bolts of the same specification according to the number of the positioning anchor bolt assemblies 3 and the number of the common anchor bolt assemblies 2, and then to prepare the positioning anchor bolt assemblies 3 and the common anchor bolt assemblies 2 by assembling according to the following method.
Specifically, the step a includes:
a01: preparation of the positioning anchor assembly 3: selecting a specified number of positioning anchors according to the drawing requirements of the fan foundation structure, screwing nylon nuts 104 (steel nuts are not allowed to be used) into the long threaded ends of the anchors serving as the positioning anchors, enabling the distance between the top ends of the long threaded ends of the anchors and the nylon nuts 104 to be L1, screwing locking nuts 105 into the other ends of the anchors, and enabling the distance between the top ends of the long threaded ends of the anchors and the locking nuts 105 to be L2;
a02: preparation of the generic anchor bolt assembly 2: arranging the rest number of common anchor bolts orderly, and screwing the locking nuts 105 into the lower ends of the common anchor bolts to ensure that the distance from the top ends of the long threaded ends of the anchor bolts to the locking nuts 105 is L2;
a03: the prepared positioning anchor assembly 3 and the conventional anchor assembly 2 are placed ready for use.
And the step B is used for installing the lower anchor plate 5, and the installed lower anchor plate 1 can be placed on the land supporting platform 9 through a crane after the lower anchor plate 5 is installed.
The step B comprises the following steps:
b01: distinguishing the upper surface and the lower surface of the lower anchor plate 5 according to the production identification of the lower anchor plate 5, wherein the lower anchor plate consists of two semi-rings, and then butting the two semi-rings of the anchor plate according to the joint identification;
b02: two connecting plates 106 are arranged above and below the butt joint of the anchor plate half rings of the lower anchor plate 5, hexagonal bolt heads are arranged above the connecting plates 106, and nuts are positioned below the connecting plates 106 arranged at the lower part of the lower anchor plate 5;
b03: respectively measuring the hole distances (such as X1 and X2 in figure 6) of anchor bolt holes on two sides of the connecting plate 106 by using a steel tape, measuring the hole distances (such as X3 in figure 6, wherein X3 is vertical to X1) in any vertical direction, checking the fit degree of the connecting plate and the anchor plate when three dimensional errors do not exceed a set value (such as 2.5 mm), and screwing down a nut of a hexagon bolt on the lower part of the anchor plate 5; as shown in fig. 6;
b04: as shown in fig. 7, after the connecting plate 106 is fastened, 2 scribed lines are scribed at the position of the tangent line of the excircle of the 3 rd anchor bolt hole from the edge of the connecting plate of the lower anchor plate 5 by using a marker pen, and 2 scribed lines are scribed in the vertical direction, wherein 4 scribed lines are provided;
b05: and (3) moving the lower anchor plate 1 to the anchor bolt cage construction supporting platform 9 by using a crane, and adjusting the flatness of the lower anchor plate 5 to enable the flatness to be smaller than a set value, for example, the flatness is less than or equal to 2.5 mm.
The step C is used for installing the upper anchor plate, and the step C specifically includes:
c01: according to the upper and lower surfaces of the mark area on the upper anchor plate 1, then the two anchor plate semi-rings are butted according to the production mark;
c02: placing two connecting plates 106 above and below the upper anchor plate 1, placing hexagonal bolt heads above the connecting plates, and placing nuts below the connecting plates 106 below the upper anchor plate 1;
c03: respectively measuring the hole distances of anchor bolt holes at two sides of the connecting piece by using a steel tape, simultaneously measuring the hole distance in any vertical direction, screwing down a nut of a hexagon head connecting bolt at the lower part of the upper anchor plate 1 when three dimensional errors are not more than set values (such as 2.5 mm), fastening the connecting plate, and then spot-welding the nut on the lower surface of a lower connecting plate of the upper anchor plate 1 to avoid that the bolt cannot be detached when the upper connecting plate of the upper anchor plate 1 is detached;
c04: if the upper anchor plate 1 is manufactured in a whole ring, skipping the steps C01-C04;
c05: as shown in fig. 8, 2 scribed lines are scribed at the position of the tangent line of the excircle of the 8 th anchor bolt hole from the edge of the connecting plate of the upper anchor plate 1 by using a marker pen, and 2 scribed lines are scribed in the vertical direction, so that 4 scribed lines are formed;
c06: hoisting the upper anchor plate 1 by a crane to move a certain distance right above the lower anchor plate 5, and ensuring that the scribing positions of the upper anchor plate and the lower anchor plate are aligned (the upper anchor plate and the lower anchor plate select to scribe outside different anchor bolt holes on two sides of the connecting plate, and the effect of ensuring that the scribing positions of the upper anchor plate and the lower anchor plate are aligned during installation is to prevent the connecting plates of the upper anchor plate and the lower anchor plate from being at the same position); then uniformly penetrating the upper end of an anchor bolt (provided with a nylon nut 104) of a positioning anchor bolt component 3 into an anchor bolt hole of an upper anchor plate 1, penetrating the lower end of the positioning anchor bolt component 3 (provided with a locking nut 105) into an anchor bolt hole of a corresponding lower anchor plate 5, after the locking nut 105 is tightly attached to the lower anchor plate 5, adding a gasket 103 below the lower anchor plate 5 and screwing a nut 102 (the positioning anchor bolt and a common anchor bolt are provided, after the nylon nut and the locking nut are installed, two ends are threaded parts, the threaded parts at two ends are respectively penetrated into the anchor bolt holes of the upper anchor plate and the lower anchor plate, adding the gasket and the nut on the exposed threaded part above the upper anchor plate, and adding the gasket and the nut on the exposed threaded part below the lower anchor plate); at this time, the upper end of the positioning anchor bolt assembly 3 is exposed out of the upper surface of the upper anchor plate, N is threaded, N is selected according to the requirement, for example, N can be selected to be 3 or 5, and the nut 102 is screwed on the top end of the anchor bolt.
Step D is for the installation of a generic anchor bolt assembly 2 on land, comprising the specific steps of:
d01: as shown in fig. 9-11, the installer inclines the common anchor bolt assembly 2 at a certain angle, the upper end of the anchor bolt penetrates into the anchor plate hole of the upper anchor plate 1, after lifting the common anchor bolt assembly 2, the lower end of the anchor bolt of the common anchor bolt assembly penetrates into the lower anchor plate 5, after the bottom surface of the locking nut 105 is tightly attached to the lower anchor plate 5, a gasket is added below the lower anchor plate 5, and the nut 102 is manually tightened;
d02: after the positioning anchor bolt assembly and the common anchor bolt assembly are installed, the upper anchor plate 5 is slowly lowered by a crane to be placed on the nylon nut 104 at the upper end of the positioning anchor bolt assembly 3.
After the positioning anchor bolt assembly and the common anchor bolt assembly are installed in the step E, the assembled anchor bolt cage is adjusted, and the specific adjusting process is as follows:
the step E comprises the following steps:
e01: anchor points are arranged at the positions of every 90 degrees around the anchor bolt cage 12, and then the upper anchor plate 1 is tensioned by a steel wire rope and a rope tightener; and hanging the plummet 10 (the plummet is hung at the marking position), and measuring the verticality of the anchor bolt to be not more than 2.5 mm. After the adjustment is finished, the steel wire rope is locked to ensure the integral stability of the anchor bolt cage 12;
e02: after the perpendicularity of the anchor bolt is adjusted, adjusting the position of the nylon nut 104 to enable the length of the upper end of the positioning anchor bolt component 3 exposed out of the upper anchor plate 1 to meet a set length threshold (such as L1 +/-1.5 mm), locking and clamping the nylon nut 104 and the nut 102 to the upper anchor plate 1, adjusting the levelness of the upper anchor plate 1 by utilizing the locking nut 105 and the nut 102 at the lower end of the anchor bolt, and checking and adjusting the space size between the upper anchor plate and the lower anchor plate to meet the requirement; checking the space size of the upper anchor plate and the lower anchor plate, wherein the tolerance of the space between the upper anchor plate and the lower anchor plate is minus 1 to plus 3mm, and the levelness of the upper anchor plate 1 is less than 1.5 mm;
e03: adjusting the positions of the remaining anchor bolt lower end locking nuts 105 and nuts 102 so that the length of the anchor bolt upper end exposed out of the upper anchor plate meets a set length threshold (for example, L1 +/-1.5 mm); the tightening torque requirement of the lowermost end nut 102 of the inspection anchor is 300N · m, and the exposed screw thread should be no less than 3 or 2.
E04: sleeving a temporary protective cap on the upper end of the anchor bolt to prevent the anchor bolt from being corroded in rainy and snowy weather;
e05: reporting and checking;
e06: after acceptance is qualified, the two channel steel of cross welding are reinforced on the lower anchor plate 5, the four channel steel 11 are used for cross welding reinforcement in the middle of the anchor bolt cage 12, the upper end of the reinforcing channel steel 11 in the middle is welded on the lower surface of the upper anchor plate 1, and the intersection point is welded to strengthen the overall stability of the anchor bolt cage 12.
The step F comprises the following steps: hoisting ship hoist, use special lifting device to hoist crab-bolt cage 12 to the ship, transport to offshore wind turbine foundation platform 9's marine machine site, then carry out supporting component 4's installation, supporting component 4 includes supporting bolt and two nuts of cover on the bolt, crab-bolt cage 12 hoists to offshore wind turbine foundation platform 7, install the supporting bolt of the supporting component 4 of crab-bolt cage 12 to anchor plate 5 supporting bolt downthehole down, anchor plate respectively sets up a nut from top to bottom, then adjust supporting bolt to same height, place on offshore wind turbine foundation platform 7 built-in fitting 6 with crab-bolt cage 12, adjust the centre distance apart from foundation platform, welding supporting component 4, fix crab-bolt cage 12 on built-in fitting 6.
The step G comprises the following steps:
adjustment of the anchor cage 12: after the support assembly 4 is secured, the anchor cage 12 is again adjusted. The levelness of the upper anchor plate 1 may be affected in the processes of binding reinforcing steel bars, supporting a formwork and pouring and tamping concrete. Before pouring the foundation concrete, rechecking the levelness of the upper anchor plate 1 to be less than or equal to 1.5mm, and correspondingly adjusting; before secondary grouting, the levelness of the upper anchor plate 1 is rechecked again and is less than or equal to 1.5mm, and corresponding adjustment is carried out. After the secondary grouting construction is finished, the levelness of the upper anchor plate 1 is less than or equal to 1.5 mm.
The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations of the technical features should be considered as being within the scope described in the present specification, and when the combinations of the technical features are contradictory or cannot be realized, the combinations of the technical features should be considered as not being present, and the combinations of the technical features are not within the scope of the claims. Also, it will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the spirit of the principles of the invention.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.
Claims (6)
1. A method for installing an anchor bolt assembly of an offshore wind turbine unit is characterized by comprising the following steps:
a: preparing a positioning anchor bolt component (3) and a common anchor bolt component (2);
b: preparing an anchor bolt cage construction supporting platform on land, installing a lower anchor plate (5), and placing the installed lower anchor plate (5) on the anchor bolt cage construction supporting platform through a crane;
c: installing the upper anchor plate (1), hoisting the installed upper anchor plate (1) to be right above the lower anchor plate (5) by using a crane, and then installing a positioning anchor bolt assembly (4);
d: mounting a common anchor bolt component (2);
e: adjusting the installed anchor bolt cage (12);
f: hoisting the adjusted anchor bolt cage (12) to a ship, conveying the anchor bolt cage to an offshore site of an offshore wind turbine foundation platform (7), installing a supporting component on a lower anchor plate (5), and then placing the anchor bolt cage (12) on an embedded part (6) on the offshore wind turbine foundation platform and fixing the anchor bolt cage through the supporting component; an embedded part (6) is arranged on the offshore wind turbine foundation platform (7) in advance;
g: the anchor cage (12) is adjusted and fixed again.
2. The method of claim 1, further comprising the steps of:
the step A comprises the following steps:
a01: preparation of the positioning anchor assembly (3): screwing a nylon nut (104) into the long threaded end of the anchor bolt serving as a positioning anchor bolt so that the tip of the long threaded end of the anchor bolt is at a distance L1 from the nylon nut (104), and screwing a lock nut (105) into the other end of the anchor bolt so that the tip of the long threaded end of the anchor bolt is at a distance L2 from the lock nut (105);
a02: preparation of a generic anchor bolt assembly (2): screwing a lock nut (105) into the lower end of the anchor bolt serving as a general anchor bolt so that the tip of the long threaded end of the anchor bolt is spaced apart from the lock nut (105) by a distance L2;
a03: and placing the prepared positioning anchor bolt component (3) and the common anchor bolt component (2) for standby.
3. The method of claim 1, further comprising the steps of:
the step B comprises the following steps:
b01: distinguishing the upper surface and the lower surface of the lower anchor plate (5) according to the mark of the lower anchor plate (5), and then butting the two anchor plate semi-rings according to the production mark;
b02: two connecting plates (106) are respectively arranged above and below the lower anchor plate (5), a hexagonal bolt head is arranged above the connecting plates, and a nut is arranged below the connecting plate arranged at the lower part of the lower anchor plate (5);
b03: respectively measuring the hole distances of anchor bolt holes at two sides of the connecting plate, simultaneously measuring the hole distance in any vertical direction, checking the attaching degree of the connecting plate and the anchor plate when the three dimensional errors are not more than a set value, and fastening a nut at the lower part of the lower anchor plate (5) with a hexagon bolt;
b04: after the connecting plate is fastened, 2 scribed lines are scribed at the position of the tangent line of the excircle of the 3 rd anchor bolt hole from the edge of the connecting plate of the lower anchor plate (5) by using a marking pen, and 2 scribed lines are scribed in the vertical direction to obtain 4 scribed lines;
b05: and (3) moving the lower anchor plate (1) to the anchor bolt cage construction supporting platform by using a crane, and adjusting the flatness of the lower anchor plate (5).
4. The method of claim 1, further comprising the steps of:
the step C comprises the following steps:
c01: according to the upper and lower surfaces of the mark area on the upper anchor plate (1), then the two anchor plate semi-rings are butted according to the production mark;
c02: two connecting plates (106) are arranged above and below the upper anchor plate (1), hexagonal bolt heads are arranged above the connecting plates, and nuts are positioned below the connecting plates below the upper anchor plate (1);
c03: respectively measuring the hole distances of anchor bolt holes at two sides of the connecting plate, simultaneously measuring the hole distance in any vertical direction, and fastening a nut at the lower part of the upper anchor plate (1) with a hexagon bolt when the three dimensional errors do not exceed a set value;
c04: if the upper anchor plate (1) is manufactured in a whole ring, skipping the steps C01-C04;
c05: 2 scribed lines are scribed at the excircle tangent position of the 8 th anchor bolt hole from the edge of the connecting plate of the upper anchor plate (1) by using a marker pen, and 2 scribed lines are scribed in the vertical direction, wherein 4 scribed lines are formed;
c06: hoisting the upper anchor plate (1) by a crane to move to a certain distance right above the lower anchor plate (5), and ensuring that the marking positions of the upper anchor plate and the lower anchor plate are aligned; then, the upper end of an anchor bolt of the positioning anchor bolt component (3) is penetrated into an anchor bolt hole of the upper anchor plate (1), the lower end of the anchor bolt is penetrated into an anchor bolt hole of the corresponding lower anchor plate (5), and after the locking nut (105) is tightly attached to the lower anchor plate (1), a gasket (103) is added below the lower anchor plate (5) and the nut (102) is screwed; at the moment, N fastening threads on the upper surface of the upper anchor plate are exposed at the upper end of the positioning anchor bolt component (3), and a nut (102) is screwed at the top end of the anchor bolt.
5. The method of claim 1, further comprising the steps of:
the step D comprises the following steps:
d01: an installer inclines the common anchor bolt component (2) by a certain angle, the upper end of the anchor bolt penetrates into the anchor plate hole of the upper anchor plate (1), the lower end of the anchor bolt of the common anchor bolt component penetrates into the lower anchor plate (5) after the common anchor bolt component (2) is lifted, after the bottom surface of the locking nut (105) is tightly attached to the lower anchor plate (5), a gasket is added below the lower anchor plate (5), and the nut (102) is screwed up manually;
d02: after the positioning anchor bolt component and the common anchor bolt component are installed, the upper anchor plate (5) is placed down by a crane and is placed on a nylon nut (104) at the upper end of the positioning anchor bolt component (3).
6. The method of claim 1, further comprising the steps of:
the step E comprises the following steps:
e01: anchor points are arranged at the positions of every 90 degrees around the anchor bolt cage (12), and then the upper anchor plate (1) is tensioned by a steel wire rope and a rope tightener; the hanging wire weight (10) adjusts the verticality, adjusts the steel wire ropes in 4 directions to be tensioned and evenly stressed, and locks the steel wire ropes after the adjustment is finished;
e02: adjusting the position of a nylon nut (104) to ensure that the length of the upper anchor plate (1) exposed at the upper end of a positioning anchor bolt component (3) meets a set value, locking the nylon nut (104) and a nut (102) to clamp the upper anchor plate (1), adjusting the levelness of the upper anchor plate (1) by utilizing a locking nut (105) and a nut (102) at the lower end of an anchor bolt, and checking and adjusting the distance between the upper anchor plate and the lower anchor plate to ensure that the upper anchor plate and the lower anchor plate meet the requirements;
e03: adjusting the positions of locking nuts (105) and nuts (102) at the lower ends of the rest anchor bolts to ensure that the length of the upper anchor plate exposed at the upper end of the anchor bolt meets a set length threshold; checking that the tightening torque requirement of the anchor bolt lowest end nut (102) is 300 N.m, and the exposed screw thread of the anchor bolt is not less than 3 threads or 2 threads;
e04: sleeving a temporary protective cap on the upper end of the anchor bolt;
e05: reporting and checking;
e06: after acceptance check is qualified, the two channel steel of cross welding are consolidated on lower anchor plate (5), use 4 channel-section steel (11) cross welding to consolidate in the middle of crab-bolt cage (12), and middle reinforcement channel-section steel (11) welding is at last anchor plate (1) lower surface, and the intersection welding to strengthen the overall stability of crab-bolt cage (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406757.2A CN112726654A (en) | 2020-12-05 | 2020-12-05 | Method for installing anchor bolt assembly of offshore wind turbine generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406757.2A CN112726654A (en) | 2020-12-05 | 2020-12-05 | Method for installing anchor bolt assembly of offshore wind turbine generator system |
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| CN112726654A true CN112726654A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011406757.2A Pending CN112726654A (en) | 2020-12-05 | 2020-12-05 | Method for installing anchor bolt assembly of offshore wind turbine generator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114411797A (en) * | 2022-01-26 | 2022-04-29 | 中国电建集团贵州工程有限公司 | Installation and construction method of anchor plate of anchor bolt of fan foundation |
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