Temporary prestress anchoring device for foundation floating body section of floating type wind turbine generator

Abstract

The utility model discloses a floating type wind turbine generator foundation floating body section temporary prestress anchoring device which comprises a plurality of first steel rule sills, a plurality of second steel rule sills, a plurality of first deformed steel bars and a plurality of second deformed steel bars, and the front sides and the rear sides of the inner surfaces of a top plate and a bottom plate of a floating body section are respectively provided with a plurality of first steel rule sills. A plurality of second steel ruler ridges are respectively mounted on the front and rear sides of the two side surfaces of the web plate of the floating body section; the front end of the first deformed steel bar is anchored on the first steel rule ridge located on the rear side in the previous floating body section, and the rear end of the first deformed steel bar is anchored on the first steel rule ridge located on the front side in the current floating body section; and the front end of the second deformed steel bar is anchored on the second steel rule ridge located on the rear side in the previous floating body section, and the rear end of the second deformed steel bar is anchored on the second steel rule ridge located on the front side in the current floating body section. The device has the advantages of being simple in structure, small in size, light in weight, convenient to operate, free of drilling holes in the surface of the floating body section and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of a floating foundation float of a floating wind turbine generator set, in particular to a temporary prestressed anchoring device for a floating foundation float segment of a floating wind turbine generator set. Background Art

[0002] Segmental prefabrication and assembly technology involves dividing the floating foundation into several standard segments. These segments are prefabricated in a factory and then assembled on-site, span by span, using prestressing to complete the structure. The floating wind turbine foundation utilizes a prestressed, high-strength concrete prefabricated structure, enabling modular design and mass production. This significantly reduces construction costs compared to traditional, all-steel floating wind turbine foundations.

[0003] During the assembly of floating sections, a temporary prestress is applied before permanent prestressing is applied to the structure as a temporary measure to connect adjacent sections. The temporary prestress should ensure a tight connection between adjacent box girder sections and maintain a certain compressive stress at the joints to ensure the effectiveness of the epoxy adhesive applied there. After the permanent prestressing is applied, the temporary prestress is removed.

[0004] Currently, there are three main methods for temporary prestressing anchors: concrete anchor blocks, removable pedestals with embedded U-shaped anchor bolts, and removable pedestals with pre-reserved anchor channels. Concrete anchor blocks are bulky and heavy, adding weight to the structure; embedded U-shaped anchor bolts extend beyond the surface of the segmental box girder, requiring holes to be drilled in the corresponding positions on the formwork, impacting its integrity; and floating foundations, which operate in seawater for extended periods, require pre-reserved channels, making subsequent sealing of these channels labor-intensive and prone to water seepage, severely impacting structural operation. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a temporary prestressed anchoring device for the floating body segment of a floating wind turbine foundation, which has the advantages of simple structure, small size, light weight, easy operation and no need to drill holes on the surface of the floating body segment.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] A temporary prestressed anchoring device for a floating body segment of a floating wind turbine foundation, the floating body segment comprising a bottom plate, two webs, two side arc segments and a top plate; the temporary prestressed anchoring device comprising a first steel ruler sill, a second steel ruler sill, a first threaded steel bar and a second threaded steel bar, a plurality of first steel ruler sills being respectively installed on the front and rear sides of the inner surfaces of the top plate and the bottom plate, and a plurality of second steel ruler sills being respectively installed on the front and rear sides of the two side surfaces of the web; the front end of the first threaded steel bar is anchored to the first steel ruler sill located at the rear side inside the previous floating body segment, and the rear end thereof is anchored to the first steel ruler sill located at the front side inside the current floating body segment; the front end of the second threaded steel bar is anchored to the second steel ruler sill located at the rear side inside the previous floating body segment, and the rear end thereof is anchored to the second steel ruler sill located at the front side inside the current floating body segment.

[0008] Furthermore, a plurality of pairs of straight threaded sleeves for installing the first steel ruler ridge are pre-embedded on the inner surfaces of the top plate and the bottom plate respectively.

[0009] Furthermore, the straight thread sleeve is made of Q355 steel and has an anti-corrosion layer on its surface.

[0010] Furthermore, the web is provided with a plurality of pairs of reserved holes for installing the second steel ruler.

[0011] Furthermore, the first steel ruler ridge and the second steel ruler ridge are respectively formed with bundle holes for passing the first threaded steel bar and the second threaded steel bar.

[0012] Furthermore, the rear ends of the first steel ruler sill and the second steel ruler sill located on the front side can be detachably installed with steel stool tooling for auxiliary anchoring.

[0013] Furthermore, a jack for temporary prestressing is detachably installed at the rear end of the steel stool tooling.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] The utility model has the advantages of simple structure, small size, light weight and easy operation. By installing a temporary prestressed anchoring device, no holes need to be reserved on the outer surface of the floating segment, making the floating segment not easy to leak water. At the same time, no U-shaped anchor bolts need to be embedded on the outer surface of the floating segment, and there are no channels for corroding the internal steel bars of the structure, which can ensure the long-term stable operation of the floating structure in seawater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the anchoring device on the web.

[0017] Figure 2 Schematic diagram of the structure of the anchoring device on the top plate.

[0018] Figure 3It is a structural diagram of the first steel ruler.

[0019] Figure 4 It is a structural diagram of the second steel ruler.

[0020] Figure 5 This is a structural diagram of a straight thread sleeve embedded in the bottom plate or top plate.

[0021] Figure 6 Schematic diagram of the structure for setting reserved holes on the web. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown, this embodiment provides a temporary prestressed anchoring device for a floating body segment of a floating wind turbine foundation, wherein the floating body segment 1 includes a bottom plate, two webs, two side arc segments and a top plate; the temporary prestressed anchoring device includes a first steel ruler sill 2, a second steel ruler sill 3, a first threaded steel bar 4 and a second threaded steel bar 5, and a plurality of first steel ruler sills 2 are respectively installed on the front and rear sides of the inner surfaces of the top plate and the bottom plate, and a plurality of second steel ruler sills 3 are respectively installed on the front and rear sides of the two side surfaces of the web; the front end of the first threaded steel bar 4 is anchored to the first steel ruler sill 2 located at the rear side inside the previous floating body segment, and the rear end thereof is anchored to the first steel ruler sill 2 located at the front side inside the current floating body segment; the front end of the second threaded steel bar 5 is anchored to the second steel ruler sill 3 located at the rear side inside the previous floating body segment, and the rear end thereof is anchored to the second steel ruler sill 3 located at the front side inside the current floating body segment.

[0024] like Figure 5 As shown, six pairs of straight thread sleeves 10 for installing the first steel ruler 2 are pre-embedded on the inner surfaces of the top plate and the bottom plate. The straight thread sleeves 10 are made of Q355 steel and have an anti-corrosion layer on the surface. The straight thread sleeves 10 should be insulated from any reinforcement in the concrete. Each first steel ruler 2 is fixed to the pre-embedded straight thread sleeves 10 using two 10.9-grade M30 high-strength bolts.

[0025] like Figure 6 As shown, there are 16 pairs of φ50 reserved holes 6 for installing the second steel ruler 3 on both sides of the web. Each second steel ruler 3 is fixed with two 10.9-grade M45 high-strength bolts passing through the reserved holes 6.

[0026] M30 high-strength bolts are installed using a torque wrench, while M45 high-strength bolts are installed using a tensioner. The torque is set to 800 N·m. Bolt installation and tightening are performed in two steps: the first tightening force reaches 50%, and the second tightening force reaches 100%.

[0027] In order to facilitate the installation of the threaded steel bars, bundle holes for passing the first threaded steel bars and the second threaded steel bars are respectively formed on the first steel ruler ridge and the second steel ruler ridge.

[0028] During use, a steel stool tooling 7 for auxiliary anchoring is detachably installed at the rear ends of the first and second steel ruler sills located at the front side, and a jack 8 for temporary prestressing is detachably installed at the rear end of the steel stool tooling 7.

[0029] The anchoring method is as follows:

[0030] Anchor the front end of the finished rolled threaded steel bar on the steel ruler located at the rear side inside the previous floating body segment, and pass its rear end through the steel ruler located at the front side inside the current floating body segment, the corresponding steel bench tooling 7 and the jack 8 in sequence;

[0031] The 16 φ40 finished rolled rebars installed on the web and the 6 φ32 finished rolled rebars installed on the top / bottom plates are evenly and symmetrically prestressed. During prestressing, the tensioning control force of a single finished rolled rebar on the web is 520kN, and the tensioning control force of each finished rolled rebar on the top / bottom plates is 290kN.

[0032] After the tensioning is completed, anchoring is performed through the threaded steel nut 9 in the steel stool tooling, and finally the jack 8 and the steel stool tooling 7 are disassembled in sequence to complete the anchoring.

[0033] The above is only a preferred embodiment of the present utility model patent, but the protection scope of the present utility model patent is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present utility model patent based on the technical solution and the utility model patent concept of the present utility model patent, which falls within the protection scope of the present utility model patent.

Claims

1. A temporary prestressed anchoring device for a floating wind turbine foundation buoy segment, wherein the buoy segment comprises a bottom plate, two webs, two side arc segments, and a top plate; characterized in that: The temporary prestressed anchoring device includes a first steel ruler sill, a second steel ruler sill, a first threaded steel bar and a second threaded steel bar. A plurality of first steel ruler sills are respectively installed on the front and rear sides of the inner surfaces of the top plate and the bottom plate, and a plurality of second steel ruler sills are respectively installed on the front and rear sides of the two side surfaces of the web plate; the front end of the first threaded steel bar is anchored to the first steel ruler sill located on the rear side inside the previous floating body segment, and the rear end thereof is anchored to the first steel ruler sill located on the front side inside the current floating body segment; the front end of the second threaded steel bar is anchored to the second steel ruler sill located on the rear side inside the previous floating body segment, and the rear end thereof is anchored to the second steel ruler sill located on the front side inside the current floating body segment.

2. The temporary prestressed anchoring device for the floating body segment of a floating wind turbine according to claim 1 is characterized in that: A plurality of pairs of straight threaded sleeves for installing the first steel ruler ridge are pre-buried on the inner surfaces of the top plate and the bottom plate respectively.

3. The temporary prestressed anchoring device for the floating body segment of a floating wind turbine according to claim 2, characterized in that: The straight thread sleeve is made of Q355 steel and has an anti-corrosion layer on its surface.

4. The temporary prestressed anchoring device for the floating body segment of a floating wind turbine according to claim 1, characterized in that: The web is provided with a plurality of pairs of reserved holes for installing the second steel ruler.

5. The temporary prestressed anchoring device for the floating body segment of a floating wind turbine according to claim 1 is characterized in that: The first steel ruler ridge and the second steel ruler ridge are respectively formed with bundle holes for passing the first threaded steel bar and the second threaded steel bar.

6. The temporary prestressed anchoring device for the floating body segment of a floating wind turbine according to claim 1, characterized in that: The rear ends of the first steel ruler sill and the second steel ruler sill located at the front side are both detachably mounted with steel stool tooling for auxiliary anchoring.

7. The temporary prestressed anchoring device for the floating body segment of a floating wind turbine according to claim 6, characterized in that: The rear end of the steel stool tooling is detachably mounted with a jack for temporary prestressing.

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