Post-earthquake maintainable offshore wind power structure transition section with damage time sequence and its application

Abstract

The present application discloses a post-earthquake maintainable offshore wind power structure transition section with damage time sequence and its application, belonging to the field of wind power structure seismic resistance technology. The transition section includes a transition tube connected between the wind power tower and the wind power pile foundation of the wind power structure, an energy-absorbing support arm connected to the wind power tower at one end and the transition tube at the other end, and an energy-absorbing shell sleeved on the transition tube. Compared with the prior art, the present application can realize the controllable and adjustable damage of the wind power structure under the action of earthquake, and improve the seismic energy-absorbing capacity of the structure, and improve the disaster-resistant toughness of the structure; in the daily operation of the transition section and under the action of small earthquakes, only the viscoelastic material plays a role, reducing the dynamic response of the structure caused by wind, waves, and earthquakes to ensure that the wind power structure is not damaged; under the action of medium earthquakes, large earthquakes and extreme environments, the self-resetting energy-absorbing device is damaged, and the main rod of the viscous chain damper and the hybrid energy-absorbing damper can provide temporary resistance to buy time for post-earthquake rescue and maintenance.

Description

Technical Field

[0001] The present application belongs to the technical field of wind power structure earthquake resistance, and specifically relates to a post-earthquake maintainable offshore wind power structure transition section with a damage time sequence and its application. Background Art

[0002] Traditional wind power structures have low redundancy and rely more on the strength limit of the structure to resist earthquakes. Their collapse characteristics are brittle. Therefore, wind power structures will collapse directly under strong earthquakes. In the future, wind power structures will continue to develop offshore and will inevitably be built in sea areas with high earthquake risks. The repair or reconstruction of a large number of earthquake-damaged structures in wind farms will bring a significant burden to society and the economy, and the harsh marine environment will also bring huge challenges to the maintenance of wind power structures.

[0003] In view of the above technical problems, it is urgently necessary to propose a post-earthquake maintainable offshore wind power structure transition section with damage time sequence to change the hysteresis characteristics of the wind power structure so as to realize controllable and adjustable damage of the wind power structure and achieve the effect of post-earthquake recovery. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a post-earthquake maintainable offshore wind power structure transition section and application with a damage time sequence, which controls the location of component damage and failure sequence of the wind power structure under different earthquake intensities by adjusting the stiffness and strength relationship between the tower transition section and the components surrounding the transition section, thereby achieving the purpose of controllable and adjustable structural damage, providing time and space for post-earthquake maintenance work of the structure, and realizing the post-earthquake recoverability of the structure.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] The embodiment of the present application provides a post-earthquake maintainable offshore wind power structure transition section with a damage time sequence, comprising a transition tube, an energy-absorbing support arm and an energy-absorbing shell, wherein:

[0007] The transfer tube comprises an upper transfer tube and a lower transfer tube hinged to the upper transfer tube through a spherical cone joint and a truncated cone joint support;

[0008] The energy-absorbing support arm comprises a cylinder support, a sleeve rod, a first self-resetting energy-absorbing device, an elbow support, a second self-resetting energy-absorbing device, a fourth connecting rod, a steel-concrete arm rod, a fixed block, and a first viscoelastic material. The cylinder support is fixed to the wind power tower; one end of the sleeve rod is hinged to the cylinder support, and the other end is grooved inward; one end of the elbow support is inserted into the sleeve rod to form a cavity to fill the first viscoelastic material, and the other end is hinged to the steel-concrete arm rod, and the steel-concrete arm rod is connected to the lower transfer cylinder; one end of the first self-resetting energy-absorbing device is connected to the sleeve rod, and the other end is connected to the elbow support; one end of the second self-resetting energy-absorbing device is hinged to the upper transfer cylinder, and the other end is hinged to the steel-concrete arm rod;

[0009] The energy-absorbing shell is sleeved on the circumference of the adapter tube, and includes a bone plate, an adapter shell, a bone end plate, a first connecting plate, a sliding plate, a second viscoelastic material and a second connecting plate, the bone end plate is arranged at the top end of the bone plate, and the bone end plate is provided with an oblong hole that cooperates with the upper adapter tube; the left and right sides of the bone plate are bent and extended to form a seamed steel plate portion fixed to the adapter shell, and the bone plate and the adapter shell are connected in sequence to form an annular structure arranged around the adapter tube; the adapter shell is a U-shaped structure, an oblong hole is opened on the sliding plate, and the sliding plate cooperates with the oblong hole on the sliding plate by bolts to clamp the sliding plate in the adapter shell; the first connecting plate is arranged at the top end of the sliding plate and is fixed to the upper adapter tube; the second connecting plate is arranged at the bottom end of the sliding plate and is fixed to the lower adapter tube; the second viscoelastic material is arranged between the adapter shell and the sliding plate.

[0010] Optionally, the upper adapter tube includes a tower bottom sleeve, four double-row hinge supports, eight first triangular hinge supports, one ball-cone hinge, four second screws and four second nuts, the double-row hinge supports are arranged at equal intervals along the circumferential direction of the upper adapter tube on the outer side of the upper half of the side wall of the upper adapter tube; the first triangular hinge supports are arranged at equal intervals along the circumferential direction of the upper adapter tube on the outer side of the lower half of the side wall of the upper adapter tube; the ball-cone hinge is arranged at the bottom of the tower bottom sleeve; the second screw and the second nut threadedly cooperate to fix the upper adapter tube on the wind turbine tower.

[0011] Optionally, the lower adapter tube includes four pairs of steel-concrete side support sleeves, the truncated cone hinge supports, eight second triangular hinge supports and a lower sleeve, the steel-concrete side support sleeves are arranged at equal intervals along the circumferential direction of the lower sleeve on the outer side of the lower half of the side wall of the lower sleeve; the truncated cone hinge supports are arranged at the top of the lower sleeve and are hingedly cooperated with the ball-cone hinge; the second triangular hinge supports are arranged at equal intervals along the circumferential direction of the lower sleeve on the outer side of the upper half of the side wall of the lower sleeve; the lower adapter tube is fixed to the wind turbine pile foundation.

[0012] Optionally, one end of the first self-resetting energy dissipation device is connected to the sleeve rod through a first connecting rod, and the other end is connected to the elbow support through a second connecting rod.

[0013] Optionally, the cylinder support includes a thin-walled circular ring and a hinge support fixed on a raised surface of the thin-walled circular ring, and the thin-walled circular ring is fixed on the wind power tower; one end of the sleeve rod is hinged to the hinge support.

[0014] Optionally, one end of the second self-resetting energy absorbing device is hinged to the double-row hinge support on the upper transfer cylinder through a third connecting rod, and the other end is hinged to the steel-concrete arm through a fourth connecting rod.

[0015] Optionally, the steel-concrete arm is formed by two rectangular rods connected in parallel, the rectangular rods are thin-walled steel and filled with concrete; one end of the steel-concrete arm is movably inserted into the steel-concrete side support rod sleeve, and the other end is sequentially penetrated by two circular holes, the elbow support clamp is arranged between the two rectangular rods of the steel-concrete arm, and is hinged at the circular holes by bolts and screws.

[0016] Optionally, one end of the second self-resetting energy absorption device is hinged to the upper transfer cylinder through a third connecting rod, and the other end is hinged to the steel-concrete arm through the fourth connecting rod. The fourth connecting rod is clamped between two rectangular rods of the steel-concrete arm and is hinged at the circular hole through a bolt and screw.

[0017] Optionally, the bone end plate and the first connecting plate are both connected to the first triangular hinge support by means of bolts and nuts; and the second connecting plate is connected to the second triangular hinge support by means of bolts and nuts.

[0018] An embodiment of the present application also provides an application of a post-earthquake maintainable offshore wind power structure transition section with a damage time sequence, and the post-earthquake maintainable offshore wind power structure transition section with a damage time sequence is applied to a wind power structure.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] It can achieve controllable and adjustable damage to wind power structures under earthquakes, improve the seismic energy dissipation capacity of the structure, and improve the disaster resilience of the structure. By adjusting the strength and stiffness relationship between components and energy dissipation devices, only viscoelastic materials play a role in the transition section during daily operation and under small earthquakes, reducing the dynamic response of wind, waves, and earthquakes to the structure to ensure that the structure is not damaged within the normal use limit; the self-resetting energy dissipation device in the hybrid energy dissipation support is damaged under moderate earthquakes, and all energy dissipation devices are damaged under large earthquakes and extreme environments. When the structure collapses and rotates, the main rods of the viscous chain damper and the hybrid energy dissipation damper can provide temporary resistance to buy time for post-earthquake rescue and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0022] Figure 1 A schematic diagram of the application of a post-earthquake maintainable offshore wind power structure transition section with damage time sequence provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the exploded structure of the transition section provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of the adapter tube provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of the upper adapter tube provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the structure of the lower adapter tube provided in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of the front view structure of the transfer section provided in an embodiment of the present application;

[0028] Figure 7 A schematic diagram of the 45-degree viewing angle structure of the adapter section provided in an embodiment of the present application;

[0029] Figure 8 A schematic diagram of the top view of the structure of the transfer section provided in an embodiment of the present application;

[0030] Fig. 9 A bottom-up structural schematic diagram of a transfer section provided in an embodiment of the present application;

[0031] Fig.10 A schematic diagram of the front view structure of the energy dissipation support arm provided in an embodiment of the present application;

[0032] Fig.11 A schematic diagram of the structure of the cylinder holder provided in the embodiment of the present application;

[0033] Fig.12 A schematic diagram of a partial cross-sectional structure of an energy dissipation support arm provided in an embodiment of the present application;

[0034] Fig.13 A schematic diagram of the front view structure of the energy-consuming housing provided in an embodiment of the present application;

[0035] Fig.14 A schematic diagram of the explosion structure of the energy-absorbing shell provided in an embodiment of the present application;

[0036] Fig.15 A schematic diagram of the failure of a structural component under a first-order overthrow provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0039] See also Figure 1 and Figure 2 As shown, an embodiment of the present application provides a post-earthquake maintainable offshore wind power structure transition section with a damage sequence, including a transition tube 2, an energy-absorbing support arm 3 and an energy-absorbing shell 4.

[0040] Recombination Figures 3 to 5 As shown, the adapter tube 2 includes an upper adapter tube 21 and a lower adapter tube 22 which is hinged to the upper adapter tube 21 through a ball-cone joint 216 and a truncated cone joint support 222. The upper adapter tube 21 and the lower adapter tube 22 are connected together by the ball-cone joint 216 and the truncated cone joint support 222 and can be rotated in all directions.

[0041] The upper adapter tube 21 includes a tower bottom sleeve 211 , four double-row hinge supports 212 , eight first triangular hinge supports 213 , one ball-cone hinge 216 , four second screw rods 217 and four second nuts 218 .

[0042] The double-row hinge supports 212 are arranged at equal intervals along the circumferential direction of the upper adapter tube 21 on the outer side of the upper half of the side wall of the upper adapter tube 21 .

[0043] The first triangular hinge supports 213 are arranged at equal intervals along the circumferential direction of the upper adapter tube 21 on the outer side of the lower half of the side wall of the upper adapter tube 21 .

[0044] The ball-cone joint 216 is disposed at the bottom of the tower bottom sleeve 211 .

[0045] The tower bottom sleeve 211 is cylindrical, and its interior is penetrated according to the bottom shape of the wind turbine tower 5 .

[0046] The spherical cone hinge 216 is formed by consolidating a flat cone and a sphere. The circular plane of the spherical cone hinge 216 is consolidating to the bottom of the tower bottom sleeve 211 .

[0047] The second screw rod 217 and the second nut 218 are threadedly matched to fix the upper adapter tube 21 on the wind turbine tower 5 .

[0048] The lower adapter tube 22 includes four pairs of steel-concrete side support rod sleeves 221 , the truncated cone hinge support 222 , eight second triangular hinge supports 223 and a lower sleeve 224 .

[0049] The steel-concrete side support rod sleeves 221 are arranged at equal intervals along the circumferential direction of the lower sleeve 224 on the outer side of the lower half of the side wall of the lower sleeve 224 .

[0050] The truncated cone hinge support 222 is disposed on the top of the lower sleeve 224 and is hingedly matched with the spherical cone hinge 216 .

[0051] The truncated cone hinge support 222 is a flat truncated cone, and its top is hollowed out in the shape of the sphere of the spherical cone hinge 216 .

[0052] The second triangular hinge supports 223 are arranged at equal intervals along the circumferential direction of the lower sleeve 224 on the outer side of the upper half of the side wall of the lower sleeve 224 .

[0053] The lower sleeve 224 is formed by splicing a cylinder and a truncated cone, and the interior is hollowed out according to the size and shape of the wind power pile foundation 6 .

[0054] The lower adapter tube 22 is fixed to the wind turbine pile foundation 6 using a pile screw 225. It should be noted that, in addition to using the pile screw 225 to fix the lower adapter tube 22 to the wind turbine pile foundation 6, the lower adapter tube 22 and the wind turbine pile foundation 6 can also be fixed by grouting.

[0055] Recombination Figures 6 to 10 As shown, the energy-absorbing support arm 3 includes a cylinder support 31, a sleeve rod 32, a first self-resetting energy-absorbing device 34, an elbow support 36, a second self-resetting energy-absorbing device 38, a fourth connecting rod 39, a steel-concrete arm 310, a fixing block 311, and a first viscoelastic material 312, and the cylinder support 31 is fixed to the wind turbine tower 5.

[0056] Recombination Fig.11 As shown, the cylinder support 31 includes a thin-walled circular ring 3111 and a hinge support 3112 fixed on the convex surface of the thin-walled circular ring 3111. The thin-walled circular ring 3111 is fixed on the wind power tower 5, and the thin-walled circular ring 3111 is in the shape of a quarter of a circular ring.

[0057] One end of the sleeve rod 32 is hinged to the hinge support 3112 of the cylinder holder 31, and the other end is grooved inwardly.

[0058] One end of the elbow support 36 is inserted into the sleeve rod 32 to form a cavity to fill the first viscoelastic material 312 , and the other end is hinged to the steel-concrete arm rod 310 , and the steel-concrete arm rod 310 is connected to the lower adapter tube 22 .

[0059] Recombination Fig.12 As shown, one end of the elbow support 36 inserted into the sleeve rod 32 is provided with an oblong hole, and the oblong hole cooperates with a screw rod to realize the connection between the elbow support 36 and the sleeve rod 32.

[0060] One end of the first self-resetting energy dissipation device 34 is connected to the sleeve rod 32 , and the other end is connected to the elbow support 36 .

[0061] Specifically, one end of the first self-resetting energy dissipation device 34 is connected to the sleeve rod 32 through a first connecting rod 33, and the other end is connected to the elbow support 36 through a second connecting rod 35. Specifically, a fixed block 311 is provided on the elbow support 36, and the second connecting rod 35 is connected to the fixed block 311 of the elbow support 36.

[0062] One end of the second self-resetting energy absorbing device 38 is hinged to the upper transfer cylinder 21 , and the other end is hinged to the steel-concrete arm 310 .

[0063] Specifically, one end of the second self-resetting energy dissipation device 38 is hinged to the double-row hinge support 212 on the upper transfer tube 21 through a third connecting rod 37 , and the other end is hinged to the steel-concrete arm 310 through a fourth connecting rod 39 .

[0064] It should be noted that the third connecting rod 37 is hinged to the double-row hinge support 212 through the cooperation of the first screw rod 215 and the first nut 214 .

[0065] Recombination Fig.13 and Fig.14 As shown, the energy-absorbing shell 4 is sleeved on the circumferential side of the adapter tube 2, and includes a bone plate 41, an adapter shell 42, a bone end plate 43, a first connecting plate 45, a sliding plate 46, a second viscoelastic material 47 and a second connecting plate 49. The bone end plate 43 is arranged at the top end of the bone plate 41, and an oblong hole is provided on the bone end plate 43 for cooperating with the upper adapter tube 21.

[0066] The left and right sides of the bone plate 41 are bent and extended to form a seamed steel plate portion 411 fixed to the adapter housing 42 . The bone plate 41 and the adapter housing 42 are sequentially connected to form an annular structure arranged around the adapter tube 2 .

[0067] The adapter housing 42 is in a U-shaped structure. The sliding plate 46 is provided with an oblong hole. The sliding plate 46 is engaged with the oblong hole on the sliding plate 46 by bolts so as to clamp the sliding plate 46 in the adapter housing 42 .

[0068] The first connecting plate 45 is disposed on the top of the sliding plate 46 and fixed to the upper adapter tube 21 .

[0069] The second connecting plate 49 is disposed at the bottom end of the sliding plate 46 and fixed to the lower adapter tube 22 .

[0070] The second viscoelastic material 47 is disposed between the adapter housing 42 and the sliding plate 46 .

[0071] The steel-concrete arm 310 is formed by connecting two rectangular bars in parallel. The rectangular bars are thin-walled steel materials and are filled with concrete.

[0072] One end of the steel-concrete arm 310 is movably inserted into the steel-concrete side support rod sleeve 221, and the other end is sequentially penetrated with two circular holes. The elbow support 36 is clamped between the two rectangular rods of the steel-concrete arm 310 and hinged at the circular hole by bolts and screws.

[0073] Specifically, the two rectangular rods of the steel-concrete arm rod 310 are inserted into the paired steel-concrete side support rod sleeves 221 .

[0074] One end of the second self-resetting energy absorbing device 38 is hinged to the upper transfer cylinder 21 through the third connecting rod 37, and the other end is hinged to the steel-concrete arm 310 through the fourth connecting rod 39. The fourth connecting rod 39 is clamped between the two rectangular rods of the steel-concrete arm 310 and hinged at the circular hole through bolts and screws.

[0075] The bone end plate 43 and the first connecting plate 45 are both connected to the first triangular hinge support 213 by means of bolts and nuts.

[0076] The second connecting plate 49 is connected to the second triangular hinge support 223 by means of bolts and nuts.

[0077] A first bone transition plate 44 is fixedly disposed on the top of the bone plate 41 , and the bone end plate 43 is fixedly disposed on the first bone transition plate 44 .

[0078] A second bone adapter plate 48 is provided at the end of the seamed steel plate portion 411 , and the second bone adapter plate 48 is fixed to the adapter housing 42 by bolts.

[0079] See Figure 1As shown, an embodiment of the present application also provides an application of a post-earthquake maintainable offshore wind power structure transition section with a damage time sequence, and the post-earthquake maintainable offshore wind power structure transition section 1 with a damage time sequence is applied to a wind power structure.

[0080] The working principle of the post-earthquake maintainable offshore wind power structure transition section with damage time sequence provided in the embodiment of the present application is as follows:

[0081] Combination Fig.15 As shown, a displacement type energy dissipation device and a speed type energy dissipation device are arranged on the adapter tube 2. Under the action of external load, the upper adapter tube 21 rotates around the spherical cone 216, which will cause the displacement type energy dissipation device (the first self-resetting energy dissipation device 34 and the second self-resetting energy dissipation device 38) on the energy dissipation support arm 3 to be pulled on one side and compressed on the other side to deform and dissipate energy. In addition, the speed type energy dissipation device (the first viscoelastic material 312 and the second viscoelastic material 47) will dissipate energy as the structure vibrates and deforms. At this moment, due to the oblong holes of the sliding plate 46 and the bone end plate 43 on the energy dissipation shell 4, the structure will not be affected before a certain rotation occurs. When the screw touches one side of the oblong hole, the bone plate 41 connected to the sliding plate 46 and the bone end plate 43 will come into play.

[0082] Furthermore, for the transition section applied to the wind power structure, it has the function of controllable and adjustable damage. By setting different viscoelastic materials and considering the relative stiffness relationship between the first self-resetting energy dissipation device 34 and the second self-resetting energy dissipation device 38 on the energy dissipation support arm 3, it can be ensured that in daily work, when the structure is subjected to wind load, wave load or small earthquake, the first viscoelastic material 312 between the elbow support 33 and the sleeve rod 32 and the second viscoelastic material 47 on the energy dissipation shell 4 work, which can effectively reduce the structural vibration caused by wind and wave load or small earthquake, and the first self-resetting energy dissipation device 34 of the energy dissipation support arm 3 is connected in parallel with the first viscoelastic material 312, which can make up for the poor self-resetting ability of the viscoelastic material under the effect of enhancing the energy dissipation capacity.

[0083] Further, under the action of a moderate earthquake, the first self-resetting energy dissipation device 34 fails, and the structure enters the primary damage stage. In the face of extreme environmental loads, the first self-resetting energy dissipation device 34, the second self-resetting energy dissipation device 38, the first viscoelastic material 312, and the second viscoelastic material 47 all fail. At this time, the bolt on the bone end plate 43 of the bone plate 41 transfers to one end of the long screw hole, and the bone plate 41 begins to consume energy. At this time, the structure enters the secondary damage stage. When the bone plate 41 fails due to large plastic deformation, the screw of the transfer housing 42 arranged on the side of the compression section of the tower slides to the side of the sliding plate 46 to provide temporary support force, and the screw of the transfer housing 42 on the side of the tension section slides to the side of the sliding plate 46 to provide temporary pressure. In addition, the screw on the sleeve rod 32 of the support arm 3 under pressure slides on the oblong hole of the elbow support 36 and touches one end of the oblong hole, which can provide temporary support force. The screw rod on the sleeve rod 32 of the energy-absorbing support arm 3 under tension slides on the oblong hole on the elbow support 36 and hits one end of the oblong hole, which can provide temporary tension. In summary, the temporary resistance provided by the support arm 3 and the energy-absorbing shell 4 can improve the structural toughness and provide time for structural maintenance and offshore repairs.

[0084] Compared with the prior art, this application has the following beneficial effects:

[0085] It can achieve controllable and adjustable damage to wind power structures under earthquakes, improve the seismic energy dissipation capacity of the structure, and improve the disaster resilience of the structure. By adjusting the strength and stiffness relationship between components and energy dissipation devices, only viscoelastic materials play a role in the transition section during daily operation and under small earthquakes, reducing the dynamic response of wind, waves, and earthquakes to the structure to ensure that the structure is not damaged within the normal use limit; the self-resetting energy dissipation device in the hybrid energy dissipation support is damaged under moderate earthquakes, and all energy dissipation devices are damaged under large earthquakes and extreme environments. When the structure collapses and rotates, the main rods of the viscous chain damper and the hybrid energy dissipation damper can provide temporary resistance to buy time for post-earthquake rescue and maintenance.

[0086] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0087] In addition, it should be noted that the scope of the methods and systems in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0088] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A post-earthquake maintainable offshore wind power structure transition section with damage time sequence, characterized in that: It includes a transfer tube, an energy-absorbing support arm and an energy-absorbing shell, wherein: The transition tube includes an upper transition tube and a lower transition tube hinged to the upper transition tube through a spherical cone hinge and a truncated cone hinge support. The upper transition tube includes a tower bottom sleeve, four double-row hinge supports, eight first triangular hinge supports, one spherical cone hinge, four second screws and four second nuts. The lower transition tube includes four pairs of steel-concrete side support rod sleeves, the truncated cone hinge support, eight second triangular hinge supports and a lower sleeve. The energy-absorbing support arm comprises a cylinder support, a sleeve rod, a first self-resetting energy-absorbing device, an elbow support, a second self-resetting energy-absorbing device, a fourth connecting rod, a steel-concrete arm rod, a fixed block, and a first viscoelastic material. The cylinder support is fixed to the wind power tower; one end of the sleeve rod is hinged to the cylinder support, and the other end is grooved inward; one end of the elbow support is inserted into the sleeve rod to form a cavity to fill the first viscoelastic material, and the other end is hinged to the steel-concrete arm rod, and the steel-concrete arm rod is connected to the lower transfer cylinder; one end of the first self-resetting energy-absorbing device is connected to the sleeve rod, and the other end is connected to the elbow support; one end of the second self-resetting energy-absorbing device is hinged to the upper transfer cylinder, and the other end is hinged to the steel-concrete arm rod; The energy-absorbing shell is sleeved on the circumference of the adapter tube, and includes a bone plate, an adapter shell, a bone end plate, a first connecting plate, a sliding plate, a second viscoelastic material and a second connecting plate, the bone end plate is arranged at the top end of the bone plate, and the bone end plate is provided with an oblong hole that cooperates with the upper adapter tube; the left and right sides of the bone plate are bent and extended to form a seamed steel plate portion fixed to the adapter shell, and the bone plate and the adapter shell are connected in sequence to form an annular structure arranged around the adapter tube; the adapter shell is a U-shaped structure, an oblong hole is opened on the sliding plate, and the sliding plate cooperates with the oblong hole on the sliding plate by bolts to clamp the sliding plate in the adapter shell; the first connecting plate is arranged at the top end of the sliding plate and is fixed to the upper adapter tube; the second connecting plate is arranged at the bottom end of the sliding plate and is fixed to the lower adapter tube; the second viscoelastic material is arranged between the adapter shell and the sliding plate.

2. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 1 is characterized in that: The double-row hinge supports are arranged at equal intervals along the circumferential direction of the upper adapter tube on the outer side of the upper half of the side wall of the upper adapter tube; the first triangular hinge supports are arranged at equal intervals along the circumferential direction of the upper adapter tube on the outer side of the lower half of the side wall of the upper adapter tube; the ball-cone joint is arranged at the bottom of the tower bottom sleeve; the second screw rod and the second nut thread cooperate to fix the upper adapter tube on the wind power tower.

3. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 2 is characterized in that: The steel-concrete side support sleeves are arranged at equal intervals along the circumferential direction of the lower sleeve on the outer side of the lower half of the side wall of the lower sleeve; the frustum hinge support is arranged at the top of the lower sleeve and is hingedly cooperated with the ball-cone hinge; the second triangular hinge support is arranged at equal intervals along the circumferential direction of the lower sleeve on the outer side of the upper half of the side wall of the lower sleeve; the lower adapter tube is fixed to the wind power pile foundation.

4. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 2, characterized in that: One end of the first self-resetting energy dissipation device is connected to the sleeve rod through a first connecting rod, and the other end is connected to the elbow support through a second connecting rod.

5. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 3 is characterized in that: The cylinder support comprises a thin-walled circular ring and a hinge support fixed on the convex surface of the thin-walled circular ring, wherein the thin-walled circular ring is fixed on the wind power tower; one end of the sleeve rod is hinged to the hinge support.

6. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 3, characterized in that: One end of the second self-resetting energy absorbing device is hinged to the double-row hinge support on the upper transfer tube through a third connecting rod, and the other end is hinged to the steel-concrete arm through a fourth connecting rod.

7. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 6, characterized in that: The steel-concrete arm is formed by two rectangular rods connected in parallel. The rectangular rods are thin-walled steel materials and are filled with concrete. One end of the steel-concrete arm is movably inserted into the steel-concrete side support rod sleeve, and the other end is sequentially penetrated with two circular holes. The elbow support clamp is arranged between the two rectangular rods of the steel-concrete arm and is hinged at the circular holes by bolts and screws.

8. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 7, characterized in that: One end of the second self-resetting energy absorbing device is hinged to the upper transfer cylinder through the third connecting rod, and the other end is hinged to the steel-concrete arm through the fourth connecting rod. The fourth connecting rod is clamped between the two rectangular rods of the steel-concrete arm and is hinged at the round hole through a bolt and screw.

9. The post-earthquake maintainable offshore wind power structure transition section with damage time sequence according to claim 3, characterized in that: The bone end plate and the first connecting plate are both connected to the first triangular hinge support by means of bolts and nuts; the second connecting plate is connected to the second triangular hinge support by means of bolts and nuts.

10. An application of a post-earthquake maintainable offshore wind power structure transition section with damage time sequence, characterized in that: The post-earthquake maintainable offshore wind power structure transition section with damage time sequence as described in any one of claims 1 to 9 is applied to the wind power structure.

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