Floating wind turbine platform floating body foundation concrete prefabricated segment assembling method

Abstract

The application discloses a floating type fan platform floating body foundation concrete prefabricated segment assembling method, multiple waterproof sealing structures are installed on a to-be-installed concrete prefabricated segment joint surface, and the waterproof sealing performance of the prefabricated segment joint surface can be guaranteed. A test assembling process is carried out before formal assembling, if it is found that assembling precision exceeds an allowable range, correction can be carried out in time, assembling precision is guaranteed to the maximum extent, a concrete component joint surface is restored to a state in a pouring time, and a joint is guaranteed to be qualified. Before the test assembling is carried out, adjusting a spatial position of the to-be-installed concrete prefabricated segment is further included, and the success rate of the test assembling is facilitated to be improved. In step A2, after the joint surface is uniformly scraped and coated with structural glue, a three-dimensional adjusting assembling trolley carries the to-be-installed concrete prefabricated segment to move forward along a forward and backward route, an axis of the three-dimensional adjusting assembling trolley remains unchanged during backward movement and forward movement, so that the spatial position of the to-be-installed concrete prefabricated segment does not need to be adjusted again during uniform scraping and coating of the structural glue on the joint surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of floating wind turbine platform floating body foundation assembly, and particularly relates to a floating wind turbine platform floating body foundation concrete prefabricated segment assembly method. BACKGROUND

[0002] With the gradual development of floating wind farm sites to deep sea and the large-scale development of units, the technology of obtaining a floating floating body foundation by splicing concrete prefabricated segments has appeared, such as Chinese patent (publication number: CN116280050A, name: offshore assembled concrete floating wind turbine waterproof foundation structure), which comprises two downwind short arm segments (OA, OB), one upwind long arm segment (OC) and a center piece. The three concrete arm segments are all prestressed concrete structures, and each concrete arm segment is spliced by a plurality of concrete prefabricated segments, which not only can save cost, but also can ensure the hardness of the floating floating body foundation.

[0003] There are many commonly used bridge prefabricated segment beam splicing methods. According to the different splicing surfaces of the prefabricated segment beam, the treatment measures can be divided into three kinds: glue joint method, wet joint method and dry joint method. According to the different segment space positioning measures before the establishment of the prestress of the prefabricated segment beam, the methods can be divided into cantilever assembly method and whole span assembly method, wherein the whole span assembly method can also be divided into support splicing and bridge erecting machine splicing method. However, the concrete prefabricated segment splicing of the floating floating body foundation is different from the bridge prefabricated segment beam splicing, and the structure of the floating floating body foundation and the sealing and waterproof performance requirements of the super-high splicing surface need to be considered. In addition, the splicing precision cannot be guaranteed, and the above splicing methods cannot meet the requirements of the concrete prefabricated segment splicing of the floating floating body foundation. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a floating wind turbine platform floating body foundation concrete prefabricated segment assembly method which can meet the requirements of concrete prefabricated segment splicing.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present application is as follows:

[0006] A floating wind turbine platform floating body foundation concrete prefabricated segment assembly method comprises the following steps:

[0007] Positioning the center piece;

[0008] Lifting the to-be-installed concrete prefabricated segment of the first arm segment to the corresponding support bracket tool, and then transporting the to-be-installed concrete prefabricated segment to the center piece splicing surface on the most surface or the front of the installed concrete prefabricated segment splicing surface, and then withdrawing the transport vehicle;

[0009] Installing multiple waterproof sealing structures on the to-be-installed concrete prefabricated segment splicing surface;

[0010] The concrete precast segment to be installed and its supporting bracket tool are close to the joint surface of the center piece on the surface or the joint surface of the installed concrete precast segment;

[0011] The concrete precast segment to be installed and the center piece on the surface or the installed concrete precast segment are symmetrically tensioned to the design pre-tightening force value by the temporary tensioning device;

[0012] After the temporary tensioning is completed, the weight of the concrete precast segment to be installed is switched to be borne by the supporting bracket tool;

[0013] The inner ring glue groove formed at the joint surface is subjected to epoxy sealant caulking construction;

[0014] The process is continuously cycled to complete the joint of all the concrete precast segments to be installed in the first arm segment;

[0015] After the joint of all the concrete precast segments to be installed in the first arm segment is completed, the joint of the concrete precast segments to be installed in the second arm segment and the third arm segment is performed;

[0016] After the joint of the concrete precast segments to be installed in the first arm segment, the second arm segment and the third arm segment is completed, the outer ring glue groove formed by all the adjacent concrete precast segments to be installed in the first arm segment, the second arm segment and the third arm segment is subjected to waterproof sealant caulking construction.

[0017] In the technical solution, the multiple waterproof sealing structures are installed on the joint surface of the concrete precast segment to be installed, so that the waterproof sealing performance of the joint surface of the precast segment can be ensured.

[0018] Further, the center piece positioning comprises:

[0019] Ground sample line measurement and drawing are performed;

[0020] The center piece is transported to the designated position;

[0021] The axis position, levelness and elevation of the center piece are adjusted according to the ground sample line;

[0022] The adjusted center piece is fixed.

[0023] The center piece is the basis of the entire floating type floating body foundation, and the ground sample line is drawn by measurement, so that the position of the center piece can be adjusted in combination with the levelness and the elevation.

[0024] Further, the waterproof sealing structure is installed on the joint surface of the concrete precast segment to be installed, and comprises a plurality of prestressed pipes, a glue-stopping sealing gasket, epoxy structural adhesive and a waterproof sealing gasket;

[0025] A plurality of prestressed pipes are uniformly distributed along the edges of the concrete precast segment to be installed, and one end of each prestressed pipe is connected with the splicing surface of the concrete precast segment to be installed;

[0026] The epoxy structural adhesive is laid on the splicing surface of the concrete precast segment to be installed and is placed around the prestressed pipe;

[0027] The glue sealing gasket is sleeved on the prestressed pipe to separate the prestressed pipe and the epoxy structural adhesive;

[0028] The waterproof sealing gasket is arranged between the epoxy structural adhesive and the waterproof sealing adhesive.

[0029] Further, the three-dimensional adjustment assembly trolley enters the bottom of the support bracket tooling of the concrete precast segment to be installed, and the three-dimensional adjustment assembly trolley is used to push the concrete precast segment to be installed and its support bracket tooling close to the splicing surface of the center piece on the surface or the splicing surface of the installed concrete precast segment.

[0030] Further, the temporary tensioning device is used to symmetrically tension the concrete precast segment to be installed and the installed concrete precast segment to the design pre-tightening force value before anchoring, and the process further includes trial assembly;

[0031] The trial assembly process includes:

[0032] A1, the temporary tensioning device is used to temporarily tension and fix the concrete precast segment to be installed and the installed concrete precast segment on the surface or the center piece, and whether the splicing joint is qualified is checked, if qualified, the trial assembly is ended, if not qualified, the next step is entered;

[0033] A2, the three-dimensional adjustment assembly trolley carrying the concrete precast segment to be installed retreats in the longitudinal direction, the splicing surface is uniformly coated with epoxy structural adhesive, and then the three-dimensional adjustment assembly trolley carrying the concrete precast segment to be installed moves forward.

[0034] In the technical solution, the trial assembly process is performed before formal assembly, if it is found that the assembly precision exceeds the allowed range, it can be corrected in time, the assembly precision is maximized, the splicing surface of the concrete member is restored to match the pouring state, and the splicing joint is ensured to be qualified.

[0035] Further, before the trial assembly is performed, the spatial position of the concrete precast segment to be installed is adjusted, which is beneficial to improve the success rate of the trial assembly.

[0036] Further, the top coordinates of the concrete precast segment to be installed are measured, and the spatial position of the concrete precast segment to be installed is adjusted through the three-dimensional adjustment assembly trolley in combination with the coordinate theoretical value.

[0037] Further, in step A2, after the uniform structural adhesive is scraped on the splicing surface, the three-dimensional adjustment assembly trolley carries the to-be-installed concrete prefabricated segment to move forward along the backward and forward route, and the axis of the three-dimensional adjustment assembly trolley remains unchanged during backward movement and forward movement, so that the spatial position of the to-be-installed concrete prefabricated segment does not need to be adjusted again during the uniform scraping of the structural adhesive on the splicing surface.

[0038] Further, the temporary tensioning device comprises a temporary tensioning support and a temporary tensioning rod.

[0039] Further, before the to-be-installed concrete prefabricated segment and the supporting bracket tool are close to the splicing surface of the most surface center piece or the splicing surface of the installed concrete prefabricated segment, the temporary tensioning support is installed into the inner cavity of the corresponding to-be-installed concrete prefabricated segment.

[0040] Compared with the prior art, the technical scheme has the following principles and advantages:

[0041] 1. The multiple waterproof sealing structures are installed on the splicing surface of the to-be-installed concrete prefabricated segment, which can ensure the waterproof sealing performance of the splicing surface of the prefabricated segment.

[0042] 2. The trial assembly process is performed before formal assembly, if the assembly precision is found to be out of the allowable range, the assembly precision can be corrected in time, the assembly precision is maximized, the splicing surface of the concrete member is restored to the state during pouring, and the joint is qualified.

[0043] 3. Before the trial assembly is performed, the spatial position of the to-be-installed concrete prefabricated segment is adjusted, which is beneficial to improve the success rate of the trial assembly.

[0044] 4. In step A2, after the uniform structural adhesive is scraped on the splicing surface, the three-dimensional adjustment assembly trolley carries the to-be-installed concrete prefabricated segment to move forward along the backward and forward route, and the axis of the three-dimensional adjustment assembly trolley remains unchanged during backward movement and forward movement, so that the spatial position of the to-be-installed concrete prefabricated segment does not need to be adjusted again during the uniform scraping of the structural adhesive on the splicing surface. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the services needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0046] Figure 1 The principle flowchart of the floating type wind turbine platform floating body foundation concrete prefabricated segment assembly method of the present application;

[0047] Figure 2This is a schematic diagram of the floating foundation of a floating wind turbine platform (A1 is the central component, A2 is the first boom segment, A3 is the second boom segment, and A4 is the third boom segment).

[0048] Figure 3 This is a schematic diagram of the assembly method of precast concrete segments for floating foundation of a floating wind turbine platform according to the present invention, in which the precast concrete segment to be installed and its supporting bracket tooling are brought close to the splicing surface of the precast concrete segment already installed. (A5 is the precast concrete segment to be installed, A6 is the precast concrete segment already installed, A7 is the supporting bracket tooling, A8 is the temporary tensioning support, A9 is the temporary tensioning rod, and A10 is the three-dimensional adjustment assembly trolley).

[0049] Figure 4 for Figure 3 Sectional view at point AA;

[0050] Figure 5 for Figure 4 Enlarged view of part B in the middle (A11 is waterproof sealant, A12 is epoxy sealant, A13 is epoxy structural adhesive, A14 is prestressed pipe, A15 is stop sealant gasket, A16 is waterproof gasket).

[0051] Figure 6 This is a schematic diagram showing the splicing of precast concrete segments to be installed with already installed precast concrete segments. Detailed Implementation

[0052] The present invention will be further described below with reference to specific embodiments:

[0053] like Figures 1 to 6 As shown in this embodiment, a method for assembling precast concrete segments for the floating foundation of a floating wind turbine platform includes the following steps:

[0054] S1. Perform center component positioning, the process includes:

[0055] S1-1, Conduct surveying and drawing of the geodetic plot line;

[0056] S1-2. Transport the center component to the designated location;

[0057] S1-3. Adjust the center component's axis position, levelness, and elevation according to the ground sample line;

[0058] S1-4, Fix the adjusted center component.

[0059] S2. Hoist the first precast concrete segment to be installed on the first boom section onto the corresponding support bracket fixture. Then, the transport vehicle enters the bottom of the support bracket fixture and transports the first precast concrete segment to be installed to the front of the splicing surface of the outermost center piece. After that, the transport vehicle exits.

[0060] S3, install a multiple waterproof sealing structure on the first to be installed concrete prefabricated segment splicing surface, the multiple waterproof sealing structure comprising a plurality of prestressed pipes, a glue-stopping sealing washer, an epoxy structural adhesive, and a waterproof sealing pad;

[0061] The plurality of prestressed pipes are evenly distributed along the edge of the first to be installed concrete prefabricated segment, and one end of each prestressed pipe is connected with the first to be installed concrete prefabricated segment splicing surface;

[0062] The epoxy structural adhesive is laid on the first to be installed concrete prefabricated segment splicing surface and is placed outside the prestressed pipes;

[0063] The glue-stopping sealing washer is sleeved on the prestressed pipes to separate the prestressed pipes and the epoxy structural adhesive;

[0064] The waterproof sealing pad is arranged between the epoxy structural adhesive and the waterproof sealing glue.

[0065] S4, install a temporary tensioning support into the inner cavity of the first to be installed concrete prefabricated segment;

[0066] S5, the three-dimensional adjustment assembly trolley enters the bottom of the support bracket tooling of the first to be installed concrete prefabricated segment, and the walking top push cylinder of the three-dimensional adjustment assembly trolley is used to push the first to be installed concrete prefabricated segment and the support bracket tooling thereof close to the center piece splicing surface.

[0067] S6, measure the top coordinates of the first to be installed concrete prefabricated segment, and adjust the spatial position of the first to be installed concrete prefabricated segment by the three-dimensional adjustment assembly trolley in combination with the coordinate theoretical value;

[0068] S7, trial assembly, the process comprising:

[0069] S7-1, use the temporary tensioning device (temporary tensioning support and temporary tensioning rod cooperate) to temporarily tension and fix the first to be installed concrete prefabricated segment and the center piece, and check whether the splicing joint is qualified, if yes, the trial assembly is ended, and step S8 is directly entered, if not, S7-2 is entered;

[0070] S7-2, the three-dimensional adjustment assembly trolley carries the first to be installed concrete prefabricated segment to retreat in the longitudinal direction, the three-dimensional adjustment assembly trolley carries the first to be installed concrete prefabricated segment to move forward along the previous backward route after the splicing surface is evenly scraped and coated with the epoxy structural adhesive, and the axis of the three-dimensional adjustment assembly trolley remains unchanged during the backward retreat and forward movement;

[0071] S8, use the temporary tensioning device (temporary tensioning support and temporary tensioning rod cooperate) to symmetrically tension the first to be installed concrete prefabricated segment and the center piece to the design pre-tightening force value anchoring;

[0072] S9, after the temporary tensioning is completed, switching to the support bracket tool to bear the weight of the first to-be-installed concrete prefabricated segment;

[0073] S10, performing epoxy sealant caulking construction on the inner ring glue groove formed at the splicing surface of the first to-be-installed concrete prefabricated segment;

[0074] S11, continuously circulating steps S2 to S10 (replacing the first to-be-installed concrete prefabricated segment with other to-be-installed concrete prefabricated segments) to complete splicing of all to-be-installed concrete prefabricated segments of the first arm segment;

[0075] S12, after the splicing of all to-be-installed concrete prefabricated segments of the first arm segment is completed, splicing of to-be-installed concrete prefabricated segments of the second arm segment and the third arm segment is performed using the same principle;

[0076] S13, after the splicing of to-be-installed concrete prefabricated segments of the first arm segment, the second arm segment, and the third arm segment is completed, performing waterproof sealant caulking construction on the outer ring glue groove formed by all adjacent to-be-installed concrete prefabricated segments in the first arm segment, the second arm segment, and the third arm segment.

[0077] In the embodiment,

[0078] Installing multiple waterproof sealing structures on the splicing surface of the to-be-installed concrete prefabricated segment can ensure the waterproof sealing performance of the splicing surface of the prefabricated segment.

[0079] The center piece is the basis of the entire floating type floating body foundation. In the embodiment, by measuring and drawing a ground sample line, the position of the center piece can be adjusted in combination with the levelness and elevation.

[0080] The trial assembly process is performed before formal assembly. If it is found that the assembly precision exceeds the allowed range, it can be corrected in time to maximize the assembly precision, restore the state of the concrete member splicing surface to the matching pouring state, and ensure the qualification of the joint.

[0081] After uniformly scraping the structural glue on the splicing surface, the three-dimensional adjustment assembly trolley carries the to-be-installed concrete prefabricated segment along the forward and backward route and moves forward. The axis of the three-dimensional adjustment assembly trolley remains unchanged during backward movement and forward movement, so that the spatial position of the to-be-installed concrete prefabricated segment does not need to be adjusted again after uniformly scraping the structural glue on the splicing surface.

[0082] The support bracket tool adopts a double-layer large-stiffness support to bear the weight, which can realize no spatial position change of the component during conversion of the support system in the assembly process, and complete high-precision splicing construction.

[0083] The above-described embodiments are only preferred embodiments of the present application, and do not limit the implementation range of the present application. Therefore, any changes made according to the shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for assembling precast concrete segments for the floating foundation of a floating wind turbine platform, characterized in that, The method comprises the following steps: Positioning the center piece; Hoisting the first arm segment of the concrete precast segment to be installed onto the corresponding support bracket tool, and then the transport vehicle enters the bottom of the support bracket tool, transports the concrete precast segment to be installed to the front of the surface center piece splicing surface or the splicing surface of the installed concrete precast segment, and then the transport vehicle exits; Installing multiple waterproof sealing structures on the splicing surface of the concrete precast segment to be installed; Moving the concrete precast segment to be installed and its support bracket tool close to the surface center piece splicing surface or the splicing surface of the installed concrete precast segment; Using the temporary tensioning device to symmetrically tension the concrete precast segment to be installed and the surface center piece or the installed concrete precast segment to the design pre-tightening force value and anchor; After the temporary tensioning is completed, the weight of the concrete precast segment to be installed is supported by the support bracket tool; Performing epoxy sealant caulking construction on the inner ring glue groove formed at the splicing surface; Continuously circulating to complete the splicing of all the concrete precast segments to be installed of the first arm segment; After the splicing of all the concrete precast segments to be installed of the first arm segment is completed, the splicing of the concrete precast segments to be installed of the second arm segment and the third arm segment is performed; After the splicing of the concrete precast segments to be installed of the first arm segment, the second arm segment and the third arm segment is completed, the outer ring glue groove formed by all the adjacent concrete precast segments to be installed of the first arm segment, the second arm segment and the third arm segment is subjected to waterproof sealant caulking construction.

2. A method of assembling precast concrete segments for a floating body foundation of a floating wind turbine platform according to claim 1, characterized in that The center piece positioning comprises the following steps: Performing ground line measurement and drawing; Transporting the center piece to the designated position; Adjusting the axis position, levelness and elevation of the center piece according to the ground line; Fixing the adjusted center piece.

3. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 1, wherein The waterproof sealing structure installed on the splicing surface of the concrete precast segment to be installed comprises multiple prestressed pipes, glue-stopping sealing gaskets, epoxy structural glue and waterproof sealing pads; The multiple prestressed pipes are uniformly distributed along the edge of the concrete precast segment to be installed, and one end of each prestressed pipe is connected with the splicing surface of the concrete precast segment to be installed; The epoxy structural glue is laid on the splicing surface of the concrete precast segment to be installed and is arranged outside the prestressed pipes; The glue-stopping sealing gasket is sleeved on the prestressed pipe to separate the prestressed pipe and the epoxy structural glue; The waterproof sealing pad is arranged between the epoxy structural glue and the waterproof sealant.

4. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 1, wherein The three-dimensional adjustment and assembly trolley enters the bottom of the support bracket tool of the concrete precast segment to be installed, and the three-dimensional adjustment and assembly trolley is used to push the concrete precast segment to be installed and its support bracket tool close to the surface center piece splicing surface or the splicing surface of the installed concrete precast segment by using the walking top push cylinder of the three-dimensional adjustment and assembly trolley.

5. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 3, wherein, Before the concrete precast segment to be installed and the installed concrete precast segment are symmetrically tensioned to the design pre-tightening force value by using the temporary tensioning device, trial assembly is further included. The trial assembly process comprises the following steps: A1, using the temporary tensioning device to temporarily tension and fix the concrete precast segment to be installed and the surface installed concrete precast segment or the center piece, and checking whether the joint is qualified, if yes, the trial assembly is ended, if not, the next step is entered; A2, the three-dimensional adjustment assembly trolley carries the concrete precast segment to be installed along the longitudinal direction, retreats, uniformly applies the epoxy structural adhesive on the splicing surface, and then carries the concrete precast segment to be installed along the forward direction.

6. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 5, wherein, Before the trial assembly, the spatial position of the concrete precast segment to be installed is adjusted.

7. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 6, wherein, The top coordinates of the concrete precast segment to be installed are measured, and the spatial position of the concrete precast segment to be installed is adjusted by the three-dimensional adjustment assembly trolley in combination with the coordinate theoretical value.

8. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 7, wherein, In step A2, after the structural adhesive is uniformly applied on the splicing surface, the three-dimensional adjustment assembly trolley carries the concrete precast segment to be installed along the forward direction, and the axis of the three-dimensional adjustment assembly trolley remains unchanged during the retreat and forward movement.

9. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to any of claims 1 to 8, wherein, The temporary tensioning device comprises a temporary tensioning support and a temporary tensioning rod.

10. A method of assembling precast concrete segments for a floating wind turbine platform foundation according to claim 9, wherein, Before the concrete precast segment to be installed and the supporting bracket tooling are close to the splicing surface of the most surface center piece or the splicing surface of the installed concrete precast segment, the temporary tensioning support is installed into the inner cavity of the corresponding concrete precast segment to be installed.

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