Offshore wind power test pile compression and uplift static load test device and load applying device

Abstract

The application discloses a kind of offshore wind power test pile compression and uplift static load test device and load applying device, offshore wind power test pile compression and uplift static load test load applying device includes cylinder wall, reinforcing beam and compartment plate, the partition in the cylinder wall is separated to form ballast space and two spaces of foundation cabin, the reinforcing beam is located at the partition, the end of the reinforcing beam is connected with the inner wall of cylinder wall, the reinforcing beam is in abutment with test pile, the compartment plate is connected with the reinforcing beam and the cylinder wall and divides the foundation cabin to form multiple compartments.The offshore wind power test pile compression and uplift static load test load applying device provided by the application has the advantages of smooth load application and cost reduction.

Description

Technical Field

[0001] This invention relates to the field of offshore wind turbine pile technology, and in particular to an offshore wind turbine test pile compression and pull-out static load testing device and a load application device. Background Technology

[0002] To ensure the smooth progress of the project, pre-construction pile tests are usually conducted, including high strain, pile stress, horizontal bearing capacity, compressive bearing capacity, and tensile bearing capacity tests, to determine the rationality of the design parameters. The load is applied by hydraulic jacks, which often require an output load of more than 3,000 tons, placing high demands on the hydraulic equipment. On-site installation of the reaction beam and hydraulic equipment is time-consuming. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a load application device for static load tests of compressive and tensile strength of offshore wind power test piles. This load application device for static load tests of compressive and tensile strength of offshore wind power test piles has the advantages of stable load application and reduced cost.

[0005] According to an embodiment of the present invention, a load application device for static load tests of compressive and tensile strength of offshore wind power test piles includes a cylindrical wall, a reinforcing beam, and a compartment plate. A partition is provided inside the cylindrical wall to divide the cylindrical wall into two spaces: a ballast space and a foundation compartment. The reinforcing beam is located at the partition, and the end of the reinforcing beam is connected to the inner wall of the cylindrical wall. The reinforcing beam abuts against the test pile. The compartment plate is connected to the reinforcing beam and the cylindrical wall and divides the foundation compartment into multiple compartments.

[0006] The load application device for static load tests of compressive and tensile strength of offshore wind power test piles according to embodiments of the present invention has the advantages of stable load application and reduced costs. This application efficiently and conveniently achieves load application for compressive and tensile bearing capacity tests of test piles, significantly saving on-site construction costs.

[0007] In some embodiments, the ballast space is an enclosed space, and an inlet is provided on the ballast space.

[0008] In some embodiments, the base compartment is an enclosed space, and an air intake is provided on the base compartment.

[0009] In some embodiments, a plurality of the reinforcing beams are arranged at equal intervals with the center of the cylinder wall as the intersection point, and the intersection point of the reinforcing beams abuts against the test pile.

[0010] In some embodiments, the compartment plate is perpendicular to the partition, each reinforcing beam corresponds to a group of compartment plates, each group of compartment plates includes a first compartment plate and a second compartment plate, each group of compartment plates is assembled with the first compartment plate of the adjacent group to form a first compartment, and multiple second compartment plates are assembled to form a second compartment for accommodating test piles.

[0011] In some embodiments, one end of the first compartment plate extends along the extension direction of the reinforcing beam and is connected to the cylinder wall, the other end of the first compartment plate is connected to one end of the second compartment plate, and the other end of the second compartment plate is connected to the first compartment plate on the adjacent reinforcing beam.

[0012] In some embodiments, the cross-section of the first compartment is approximately trapezoidal, and the cross-section of the second compartment is hexagonal.

[0013] In some embodiments, the load application device for the static load tests of offshore wind power test piles for compressive and tensile strength further includes a water pump and a water inlet pipe, wherein the water pump is connected to the water inlet of the ballast space via the water inlet pipe.

[0014] According to an embodiment of the present invention, the offshore wind power test pile compression and pull-out static load test device includes a load application device, a positioning pile, and a reference pile. The load application device includes a cylindrical wall, a reinforcing beam, and a compartment plate. A partition is provided inside the cylindrical wall to divide the cylindrical wall into two spaces: a ballast space and a foundation compartment. The reinforcing beam is located at the partition, and its two ends are respectively connected to the inner wall of the cylindrical wall. The lower surface of the reinforcing beam abuts against the test pile. The compartment plate is connected to the reinforcing beam and the cylindrical wall and divides the foundation compartment into multiple compartments. The positioning pile is located outside the cylindrical wall of the load application device to constrain the cylindrical wall. The reference pile is used to obtain the vertical displacement value during the test.

[0015] In some embodiments, there are at least two foundation piles, with the two foundation piles located on both sides of the cylindrical wall, and the positioning piles arranged around the cylindrical wall and abutting against the cylindrical wall. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the load application device for static load tests of offshore wind power test piles under compression and pull-out resistance according to an embodiment of the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of the load application device for static load tests of offshore wind power test piles under compression and pull-out resistance according to an embodiment of the present invention.

[0018] Reference numerals: 1. Cylinder wall; 10. Ballast space; 11. Reinforcing beam; 12. Foundation compartment; 13. First compartment plate; 14. Second compartment plate; 2. Test pile; 3. Positioning pile; 4. Reference pile; 5. Divider. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] According to an embodiment of the present invention, the load application device for the static load tests of compressive and tensile strength of offshore wind power test pile 2 is as follows: Figures 1 to 2 As shown, the load application device for the static load tests of the offshore wind power test pile 2 for compression and pull-out includes a cylindrical wall 1, a reinforcing beam 11, and a compartment plate. A partition 5 is installed inside the cylindrical wall 1, dividing it into two spaces: a ballast space 10 and a foundation compartment 12. The reinforcing beam 11 is located at the partition 5, and its end is connected to the inner wall of the cylindrical wall 1. The reinforcing beam 11 abuts against the test pile 2. The compartment plate is connected to the reinforcing beam 11 and the cylindrical wall 1, dividing the foundation compartment 12 into multiple compartments. The cylindrical wall 1 of the load application device, separated by the partition 5, forms the ballast space 10 and the foundation compartment 12 arranged vertically. Air is pumped into the ballast space 10, allowing it to descend and conduct a pile driving test on the test pile 2. When a pull-out test is required, high-pressure gas is injected into the foundation compartment 12, increasing the buoyancy of the load application device and causing the test pile 2 to move upwards, thus achieving pile extraction.

[0021] The load application device for static load tests of compressive and tensile strength of offshore wind power test piles 2 according to embodiments of the present invention has the advantages of stable load application and reduced costs. This application efficiently and conveniently applies loads to test the compressive and tensile bearing capacity of the test piles 2, significantly saving on-site construction costs.

[0022] In some embodiments, the ballast space 10 is a closed space, and a water inlet is provided on the ballast space 10.

[0023] Specifically, the ballast space 10 is a closed space, which facilitates the control of the water volume in the ballast space 10 and helps to achieve a smooth and slow increase in load and avoid sudden load changes.

[0024] In some embodiments, the base compartment 12 is an enclosed space, and an air inlet is provided on the base compartment 12.

[0025] Specifically, the base chamber 12 is a closed space that can prevent high-pressure gas from escaping. The base chamber 12 is located below the ballast space 10 and supports the ballast space 10. At the same time, the base chamber 12 is arranged around the test pile 2 and fixed to the test pile 2, which can drive the test pile 2 to move with the base chamber 12 so as to provide buoyancy for the test pile 2 to move upward.

[0026] In some embodiments, a plurality of reinforcing beams 11 are arranged at equal intervals with the center of the cylindrical wall 1 as the intersection point, and the intersection point of the reinforcing beams 11 abuts against the test pile 2.

[0027] Specifically, the reinforcing beam 11 improves the structural strength of the partition 5. Multiple reinforcing beams 11 intersect at the center of the cylinder wall 1. The test pile 2 abuts against the intersection of the reinforcing beams 11 of the cylinder wall 1. The high structural strength at the intersection can meet the requirements of pile driving and pile extraction tests and avoid deformation of the partition. The equal-interval cross arrangement of multiple reinforcing beams 11 can make the partition 5 bear the force evenly.

[0028] In some embodiments, the compartment plates are perpendicular to the partition 5, each reinforcing beam 11 corresponds to a group of compartment plates, each group of compartment plates includes a first compartment plate 13 and a second compartment plate 14, each group of compartment plates is assembled with the first compartment plate 13 of the adjacent group to form a first compartment, and multiple second compartment plates 14 are assembled to form a second compartment for accommodating the test pile 2.

[0029] Specifically, the compartment plates are perpendicular to the partition 5, dividing the space within the foundation compartment 12. Two compartment plates, the first compartment plate 13 and the second compartment plate 14, are connected at one end, forming an angle between them. The first compartment plate 13, the second compartment plate 14, and the cylindrical wall 1 separate the space into the first compartment. Multiple second compartment plates 14 surround the center point of the cylindrical wall 1 and are then joined together to form the second compartment. The first compartment is used to store high-pressure gas, while the second compartment serves to fix the test pile 2.

[0030] In some embodiments, one end of the first compartment plate 13 extends along the extension direction of the reinforcing beam 11 and is connected to the cylinder wall 1, the other end of the first compartment plate 13 is connected to one end of the second compartment plate 14, and the other end of the second compartment plate 14 is connected to the first compartment plate 13 on the adjacent reinforcing beam 11.

[0031] Specifically, the first compartment plate 13 is arranged along the extension direction of the reinforcing beam 11. The first compartment plate 13 can be fixedly connected to the reinforcing beam 11 to increase structural strength. Multiple second compartment plates 14 are connected end to end to form a polygonal space. The connection between the first compartment plate 13 and the second compartment plate 14 increases the number of spaces inside the base compartment 12. The radial arrangement of the first compartment plate 13 divides the space inside the cylinder wall 1 into multiple spaces, ensuring the structural strength of the base compartment 12. This reduces the impact of high-pressure gas leakage from a single space on the overall buoyancy of the base compartment 12. The second compartment plate 14 connects two adjacent reinforcing beams 11, further improving the structural strength between the reinforcing beams 11 and ensuring the structural strength of the partition 5.

[0032] In some embodiments, the cross-section of the first compartment is approximately trapezoidal, and the cross-section of the second compartment is hexagonal.

[0033] Specifically, the cross-section of the first compartment is approximately trapezoidal, while the cross-section of the second compartment is hexagonal. The hexagonal structure of the second compartment results in high structural strength, ensuring the safe use of the basic compartment 12.

[0034] In some embodiments, the load application device for the static load tests of compressive and tensile strength of offshore wind power test pile 2 further includes a water pump and a water inlet pipe, wherein the water pump is connected to the water inlet of the ballast space 10 through the water inlet pipe.

[0035] Specifically, a water pump injects water into the ballast space 10 through an inlet pipe to achieve stable application of load for the Nha Trang test. This method replaces the traditional hydraulic system, saving on equipment installation and commissioning costs and reducing testing costs.

[0036] According to an embodiment of the present invention, the offshore wind power test pile 2 compressive and tensile static load test device includes a load application device, a positioning pile 3, and a reference pile 4. The load application device includes a cylindrical wall 1, a reinforcing beam 11, and a compartment plate. A partition 5 is provided inside the cylindrical wall 1 to divide the cylindrical wall 1 into two spaces: a ballast space 10 and a foundation compartment 12. The reinforcing beam 11 is located at the partition 5, and both ends of the reinforcing beam 11 are connected to the inner wall of the cylindrical wall 1. The lower surface of the reinforcing beam 11 abuts against the test pile 2. The compartment plate is connected to the reinforcing beam 11 and the cylindrical wall 1 and divides the foundation compartment 12 into multiple compartments. The positioning pile 3 is located outside the cylindrical wall 1 of the load application device to constrain the cylindrical wall 1. The reference pile 4 is used to obtain the vertical displacement value during the test.

[0037] In some embodiments, there are at least two foundation piles, with the two foundation piles located on both sides of the cylindrical wall 1, and the positioning piles 3 arranged around the cylindrical wall 1 and abutting against the cylindrical wall 1.

[0038] Specifically, the two foundation piles serve as a benchmark. After the foundation piles are driven in, the vertical displacement value during the pull-up or press-down test can be detected, providing reference data to reduce errors. After the positioning pile 3 is in place on the outer side of the cylinder wall 1, it is fixed and driven in to constrain the cylinder wall 1 horizontally and prevent the cylinder wall 1 from moving in a plane.

[0039] In the description of this invention, it should 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," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A load application device for static load tests of compressive and tensile strength of offshore wind power test piles, characterized in that, include: The cylinder wall is divided into two spaces: a ballast space and a foundation compartment. The foundation compartment is a closed space and is equipped with an air inlet. A reinforcing beam is located at the partition, and the end of the reinforcing beam is connected to the inner wall of the cylinder wall. Multiple reinforcing beams are arranged at equal intervals with the center of the cylinder wall as the intersection point. The intersection point of the reinforcing beam abuts against the test pile, and the lower surface of the reinforcing beam abuts against the test pile. The compartment plate is connected to the reinforcing beam and the cylindrical wall and divides the base compartment into multiple compartments; When a pile extraction test is required, high-pressure gas is injected into the foundation chamber. The increased buoyancy of the load application device causes the pile body to move upward, thus achieving pile extraction. The foundation chamber is arranged around the test pile and fixed to the test pile, which can cause the test pile to move with the foundation chamber in order to provide buoyancy for the upward movement of the test pile.

2. The load application device for static load tests of compressive and tensile strength of offshore wind power test piles according to claim 1, characterized in that, The ballast space is an enclosed space, and a water inlet is provided on the ballast space.

3. The load application device for static load tests of compressive and tensile strength of offshore wind power test piles according to claim 1, characterized in that, The compartment plates are perpendicular to the partition members. Each reinforcing beam corresponds to a set of compartment plates. Each set of compartment plates includes a first compartment plate and a second compartment plate. Each set of compartment plates is assembled with the first compartment plates of the adjacent set to form a first compartment. Multiple second compartment plates are assembled to form a second compartment for accommodating test piles. One end of the first compartment plate extends along the extension direction of the reinforcing beam and is connected to the cylinder wall. The other end of the first compartment plate is connected to one end of the second compartment plate. The other end of the second compartment plate is connected to the first compartment plate on the adjacent reinforcing beam.

4. The load application device for static load tests of compressive and tensile strength of offshore wind power test piles according to claim 3, characterized in that, The first compartment has an approximately trapezoidal cross-section, while the second compartment has a hexagonal cross-section.

5. The load application device for static load tests of compressive and tensile strength of offshore wind power test piles according to claim 2, characterized in that, It also includes a water pump and a water inlet pipe, wherein the water pump is connected to the water inlet of the ballast space via the water inlet pipe.

6. A static load testing device for compressive and tensile strength of offshore wind power test piles, characterized in that, include The load application device as described in any one of claims 1-5; Positioning piles are located outside the cylinder wall of the load application device to constrain the cylinder wall; A reference pile, used to obtain the vertical displacement value during the test.

7. The offshore wind power test pile compression and pull-out static load test device according to claim 6, characterized in that, There are at least two reference piles, with the two reference piles located on both sides of the cylindrical wall, and the positioning piles arranged around the cylindrical wall and abutting against the cylindrical wall.

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