Ocean pile group foundation

Abstract

The invention relates to an ocean pile group foundation, and relates to the technical field of ocean building foundation engineering, the ocean pile group foundation comprises a supporting system, and the supporting system comprises a plurality of foundation piles arranged at intervals; the damping device is arranged between the two foundation piles and comprises a packaging straining beam, a first spring, a mass block and a generator type damping element, the packaging straining beam is connected with the two adjacent foundation piles, a containing cavity is formed in the packaging straining beam, the first spring, the mass block and the generator type damping element are all arranged in the containing cavity, one end of the first spring is connected with the inner wall of the packaging straining beam, and the other end of the first spring is connected with the inner wall of the generator type damping element. One end of the damping element is connected with the packaging straining beam, the other end of the damping element is connected with the mass block, the mass block is slidably connected with the packaging straining beam and connected with the generator type damping element, and the generator type damping element is used for converting energy generated in the damping effect generation process into electric energy. Energy generated in the damping effect generation process is conveniently utilized, the energy utilization rate is improved, the damping device can be conveniently overhauled through the annular overhauling channel, and the problem that the damping device is difficult to maintain and maintain is solved.

Description

Technical Field

[0001] The invention relates to the technical field of marine building foundation engineering, and in particular to a marine pile group foundation. Background Art

[0002] Pile group foundations are widely used in various bridge projects due to their excellent bearing capacity and mature construction technology. With the development of bridge engineering technology and the continuous densification of transportation networks in coastal areas, cross-sea bridges continue to emerge. The common characteristics of the pile group foundations of such bridges are: the pile top is located above the seabed surface and at a high height from the seabed surface, and the pile foundation is in a deep-water marine environment. The pile length of the currently built bridge pile foundation (the depth of the pile top from the seabed surface) is up to 60m, and the water depth of the cross-sea channel and other projects being planned and designed will exceed 100 meters. These areas have a harsh corrosion environment, deep water, high waves, rapid currents, and frequent strong earthquakes. How to reliably ensure the safety of deep-water marine bridges and how to achieve the optimal design and construction of super-large deep-water bridge foundations have become scientific and technical problems that need to be solved urgently in engineering.

[0003] In the prior art, for example, a pile group foundation pedestal for resisting horizontal earthquakes, such as patent number CN117468489A, includes a pedestal body and an energy dissipation device, the energy dissipation device includes an energy dissipation mechanism, a vibration power supply mechanism and a cable; the energy dissipation mechanism is connected to the vibration power supply mechanism through a cable, and the current provided by the vibration power supply mechanism increases as the vibration amplitude of the pedestal increases; the energy dissipation mechanism includes two energy dissipation components stacked up and down, the energy dissipation components include a housing, an elastic member, a mass block, an excitation coil and a magnetorheological fluid, and the mass block is provided with a damping through hole for the magnetorheological fluid to pass through. In the present application, when the vibration power supply mechanism can dynamically adjust the magnitude of the current in the excitation coil according to the actual intensity of the earthquake action on the pedestal, the damping coefficient of the movement of the magnetorheological fluid is dynamically changed, so that the damping coefficient in the energy dissipation component is adapted to the actual intensity of the horizontal earthquake action, so as to achieve a good vibration reduction and energy dissipation effect.

[0004] However, the main purpose of the existing energy dissipation device is to dynamically adjust the damping coefficient according to the actual intensity of the earthquake action on the pedestal, which makes it difficult to effectively utilize the energy generated during the damping process, and there is a problem of reducing energy utilization. Summary of the invention

[0005] The present application provides an offshore pile group foundation, which can solve the problem that the existing energy dissipation device in the prior art mainly aims to dynamically adjust the damping coefficient according to the actual intensity of the seismic action on the pedestal, but it is difficult to effectively utilize the energy generated during the damping action, resulting in reduced energy utilization.

[0006] In a first aspect, an embodiment of the present application provides a marine pile group foundation, which includes:

[0007] A support system comprising a plurality of foundation piles arranged at intervals;

[0008] A damping device is arranged between two of the foundation piles, and the damping device includes a packaged tie beam, a first spring, a mass block and a generator-type damping element. The packaged tie beam connects two adjacent foundation piles and is provided with a receiving cavity inside. The first spring, the mass block and the generator-type damping element are all arranged in the receiving cavity. One end of the first spring is connected to the inner wall of the packaged tie beam, and the other end is connected to the mass block. The mass block is slidably connected to the packaged tie beam and to the generator-type damping element. The generator-type damping element is used to convert the energy generated during the damping process into electrical energy.

[0009] In one embodiment, the damping device further comprises a second spring, one end of the second spring is connected to the mass block, and the other end of the second spring is connected to the generator-type damping element.

[0010] In one embodiment, an energy storage device is further provided in the packaged tie beam, and the energy storage device is connected to the generator-type damping element, and is used to collect the electric energy converted by the generator-type damping element, and transmit the converted electric energy to the sensor group.

[0011] In one embodiment, a signal transmission unit is further provided in the energy storage device, and the energy storage device is used to connect with the sensor group signal, receive the information monitored by the sensor group, and transmit it to the bridge health monitoring management system.

[0012] In one embodiment, a guide rail is provided in the package tie beam, and the mass block is slidably disposed on the guide rail.

[0013] In one embodiment, the support system includes twenty foundation piles, which are arranged in four columns and five rows to form two inner and outer rectangles, and the damping device is provided between two adjacent foundation piles located on the sides of the inner and outer rectangles.

[0014] In one embodiment, two of the damping devices are disposed between two adjacent foundation piles located on the inner and outer rectangular sides, and the two damping devices are spaced apart in the height direction of the foundation piles.

[0015] In one embodiment, a pedestal is provided at the upper end of the support system, and all the damping devices located between two adjacent foundation piles on the inner and outer rectangular sides are respectively located in two spaced horizontal planes. An annular maintenance passage corresponding to the damping device and a descending elevator for entering the annular maintenance passage are also provided in the support system. Eight entrances for the descending elevators are provided on the pedestal, which are respectively located at the four corners of the inner and outer rectangles. The descending elevators are connected to the annular maintenance passages located in two spaced horizontal planes, and the generator-type damping element is used to convert the energy generated during the damping action into electrical energy and provide electrical energy to the descending elevator.

[0016] In one embodiment, a rigid beam is provided between two damping devices spaced apart along the height direction of the piles, and both ends of the rigid beam are respectively connected to two adjacent piles. The two damping devices are arranged at 1 / 4 and 3 / 4 of the portion of the piles exposed from the seabed, and the rigid beam is arranged at 1 / 2 of the portion of the piles exposed from the seabed.

[0017] In one embodiment, the rigid crossbeam is a UHPC ultra-high performance concrete component, and a silicone permeable protective layer is provided on the rigid crossbeam.

[0018] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0019] When constructing the deep-water pile group foundation pedestal, the support system includes a plurality of foundation piles arranged at intervals, and a damping device is arranged between two foundation piles. The damping device includes a packaged tie beam, a first spring, a mass block and a generator-type damping element. The packaged tie beam connects two adjacent foundation piles and is provided with a receiving cavity inside. The first spring, the mass block and the generator-type damping element are all arranged in the receiving cavity. One end of the first spring is connected to the inner wall of the packaged tie beam, and the other end is connected to the mass block. The mass block is slidably connected to the packaged tie beam and to the generator-type damping element. The generator-type damping element is used to convert the energy generated during the damping process into electrical energy. Since the mass block has the inertia to stay in place, when the encapsulated tie beam moves, the encapsulated tie beam and the mass block move closer to or farther away from each other, compressing or stretching the first spring, and the damping force is converted into electrical energy by the generator-type damping element, which facilitates the utilization of the energy generated during the damping process and improves the energy utilization rate. This solves the problem that the main purpose of the existing energy-consuming device in the prior art is to dynamically adjust the damping coefficient according to the actual intensity of the seismic action on the pedestal, and it is difficult to effectively utilize the energy generated during the damping process, resulting in a problem of reduced energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the longitudinal section structure of an embodiment of a marine pile group foundation of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the foundation piles at the damping device in an embodiment of an ocean pile group foundation of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the foundation piles at the rigid cross beam in an embodiment of an ocean pile group foundation of the present invention.

[0024] Figure 4 It is a schematic structural diagram of a damping device in an embodiment of an ocean pile group foundation of the present invention.

[0025] Figure 5 It is a schematic diagram of the first longitudinal section structure of a rigid cross beam in an embodiment of an ocean pile group foundation of the present invention.

[0026] Figure 6 It is a schematic diagram of the second longitudinal cross-section structure of a rigid cross beam in an embodiment of an ocean pile group foundation of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the third longitudinal section of a rigid cross beam in an embodiment of an ocean pile group foundation of the present invention.

[0028] Figure 8 It is a structural schematic diagram of an annular maintenance channel located in the outer ring in an embodiment of an ocean pile group foundation of the present invention.

[0029] Fig. 9 It is a structural schematic diagram of an annular maintenance channel in the inner circle in an embodiment of an ocean pile group foundation of the present invention.

[0030] Fig.10 The cross-sectional structure diagram of an annular maintenance passage in an embodiment of an ocean pile group foundation of the present invention.

[0031] Fig.11 It is a structural schematic diagram of a cap in an embodiment of an ocean pile group foundation of the present invention.

[0032] Fig.12 It is a structural schematic diagram of an embodiment of a marine pile group foundation of the present invention.

[0033] In the figure: 1. Support system; 11. Foundation piles; 2. Capping platform; 3. Damping device; 31. Encapsulated tie beam; 311. Guide rail; 32. First spring; 33. Mass block; 34. Generator-type damping element; 35. Second spring; 4. Energy storage device; 5. Sensor group; 6. Rigid beam; 61. Prestressed steel strand; 62. Special steel bar; 63. Anchor head cover; 7. Annular inspection passage; 8. Downward elevator; 81. Entrance. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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.

[0035] The embodiment of the present application provides an offshore pile group foundation, which can solve the problem that the main purpose of the existing energy dissipation device in the prior art is to dynamically adjust the damping coefficient according to the actual intensity of the seismic action on the pedestal, and it is difficult to effectively utilize the energy generated during the damping process, resulting in reduced energy utilization.

[0036] like Figure 1 , Figure 2 , Figure 4 , Figure 8 , Fig. 9 and Fig.12 As shown, the present application provides a marine pile group foundation, which includes:

[0037] A support system 1, comprising a plurality of foundation piles 11 arranged at intervals;

[0038] The damping device 3 is arranged between two foundation piles 11. The damping device 3 includes a packaged tie beam 31, a first spring 32, a mass block 33 and a generator-type damping element 34. The packaged tie beam 31 connects two adjacent foundation piles 11 and is provided with a receiving cavity inside. The first spring 32, the mass block 33 and the generator-type damping element 34 are all arranged in the receiving cavity. One end of the first spring 32 is connected to the inner wall of the packaged tie beam 31, and the other end is connected to the mass block 33. The mass block 33 is slidably connected to the packaged tie beam 31 and to the generator-type damping element 34. The generator-type damping element 34 is used to convert the energy generated during the damping process into electrical energy.

[0039] When constructing the deep-water pile group foundation pedestal, the support system 1 includes a plurality of foundation piles 11 arranged at intervals, and the damping device 3 is arranged between two foundation piles 11. The damping device 3 includes a packaged tie beam 31, a first spring 32, a mass block 33 and a generator-type damping element 34. The packaged tie beam 31 connects two adjacent foundation piles 11, and an accommodating cavity is provided inside. The first spring 32, the mass block 33 and the generator-type damping element 34 are all arranged in the accommodating cavity. One end of the first spring 32 is connected to the inner wall of the packaged tie beam 31, and the other end is connected to the mass block 33. The mass block 33 is slidably connected to the packaged tie beam 31 and to the generator-type damping element 34. The generator-type damping element 34 is used to convert the energy generated during the damping process into electrical energy. Since the mass block 33 has the inertia to remain in place, when the encapsulated tie beam 31 moves, the encapsulated tie beam 31 and the mass block 33 move closer to or farther away from each other, compressing or stretching the first spring 32, and the damping force is converted into electrical energy by the generator-type damping element 34, which facilitates the use of the energy generated during the damping process and improves the energy utilization rate. This solves the problem that the main purpose of the existing energy-consuming device in the prior art is to dynamically adjust the damping coefficient according to the actual intensity of the seismic action on the pedestal, but it is difficult to effectively use the energy generated during the damping process, resulting in a problem of reduced energy utilization rate.

[0040] In this example, the foundation pile 11 has a diameter of 12 m, a wall thickness of 3.0 m, and a center distance of 30 m.

[0041] like Figure 4 As shown, in some optional embodiments, the damping device 3 further includes a second spring 35 , one end of the second spring 35 is connected to the mass block 33 , and the other end of the second spring 35 is connected to the generator-type damping element 34 .

[0042] In this embodiment, the damping device 3 also includes a second spring 35, one end of which is connected to the mass block 33, and the other end is connected to the generator-type damping element 34. The second spring 35 has a simple structure and is convenient for miniaturization. It eliminates part of the force transmitted from the mass block 33 to the generator-type damping element 34, and produces a certain protective effect.

[0043] like Figure 4 As shown, in some optional embodiments, an energy storage device 4 is further provided in the package tie beam 31 , and the energy storage device 4 is connected to the generator type damping element 34 , and is used to collect the electric energy converted by the generator type damping element 34 , and transmit the converted electric energy to the sensor group 5 .

[0044] In this embodiment, an energy storage device 4 is further provided in the packaging tie beam 31. The energy storage device 4 is connected to the generator-type damping element 34 and is used to collect the electric energy converted by the generator-type damping element 34 and transmit the converted electric energy to the sensor group 5, so as to facilitate the collection and utilization of the energy generated during the damping process.

[0045] In some optional embodiments, a signal transmission unit is further provided in the energy storage device 4, and the energy storage device 4 is used to connect with the sensor group 5 by signal, receive information monitored by the sensor group 5, and transmit it to the bridge health monitoring management system.

[0046] In this embodiment, a signal transmission unit is also provided in the energy storage device 4. The energy storage device 4 is used to connect with the sensor group 5 by signal, receive the information monitored by the sensor group 5, and transmit it to the bridge health monitoring management system. The energy storage device 4 provides electrical energy to the sensor group 5, and collects the information monitored by the sensor group 5, and transmits it to the bridge health monitoring management system, so as to facilitate the collection and transmission of bridge health information.

[0047] In this example, the sensor group 5 includes a temperature and humidity environmental parameter sensor and a displacement structure response sensor.

[0048] like Figure 4 As shown, in some optional embodiments, a guide rail 311 is provided in the package tie beam 31 , and the mass block 33 is slidably disposed on the guide rail 311 .

[0049] In this embodiment, a guide rail 311 is provided in the packaging tie beam 31, and the mass block 33 is slidably disposed on the guide rail 311. The connection form between the mass block 33 and the packaging tie beam 31 is specifically described, which has a simple structure and is easy to manufacture.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, in some optional embodiments, the support system 1 includes twenty piles 11, which are arranged in four columns and five rows to form two inner and outer rectangles, and a damping device 3 is provided between two adjacent piles 11 located on the sides of the inner and outer rectangles.

[0051] In this embodiment, the arrangement of the support system 1 is specifically described. The support system 1 includes twenty piles 11, which are arranged in four columns and five rows to form two inner and outer rectangles. Damping devices 3 are provided between two adjacent piles 11 located on the sides of the inner and outer rectangles, and the spatial distribution is more reasonable.

[0052] like Figure 1 and Fig.12 As shown, in some optional embodiments, two damping devices 3 are provided between two adjacent foundation piles 11 located on the inner and outer rectangular sides, and the two damping devices 3 are spaced apart in the height direction of the foundation piles 11 .

[0053] In this embodiment, two damping devices 3 are provided between two adjacent foundation piles 11 located on the inner and outer rectangular sides. The two damping devices 3 are spaced apart along the height direction of the foundation piles 11 to further enhance the damping effect and improve the stability of the support system 1.

[0054] like Figure 1 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, in some optional embodiments, a pedestal 2 is provided at the upper end of the support system 1, and all damping devices 3 between two adjacent foundation piles 11 on the inner and outer rectangular sides are respectively located in two interval horizontal planes, and an annular maintenance channel 7 corresponding to the damping device 3 and a descending elevator 8 for entering the annular maintenance channel 7 are also provided in the support system 1. Eight entrances 81 of the descending elevators 8 are provided on the pedestal 2, which are respectively located at the four corners of the inner and outer rectangles. The descending elevators 8 are connected to the annular maintenance channels 7 located in the two interval horizontal planes, and the generator-type damping element 34 is used to convert the energy generated during the damping action into electrical energy and provide electrical energy to the descending elevators 8.

[0055] In this embodiment, a pedestal 2 is provided at the upper end of the support system 1, and all damping devices 3 between two adjacent foundation piles 11 on the inner and outer rectangular sides are respectively located in two interval horizontal planes. The support system 1 is also provided with an annular maintenance channel 7 corresponding to the damping device 3, and a descending elevator 8 for entering the annular maintenance channel 7. Eight entrances 81 of the descending elevator 8 are provided on the pedestal 2, which are respectively located at the four corners of the inner and outer rectangles. The descending elevator 8 is connected to the annular maintenance channel 7 located in the two interval horizontal planes. The generator-type damping element 34 is used to convert the energy generated during the damping action into electrical energy and provide electrical energy to the descending elevator 8, thereby improving the energy utilization rate. In addition, the damping device 3 can be easily inspected through the annular maintenance channel 7 to prevent the damping device 3 from malfunctioning.

[0056] like Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Fig.12 As shown, in some optional embodiments, a rigid beam 6 is provided between two damping devices 3 spaced apart along the height direction of the foundation pile 11, and both ends of the rigid beam 6 are respectively connected to two adjacent foundation piles 11, and the two damping devices 3 are arranged at 1 / 4 and 3 / 4 of the part of the foundation pile 11 exposed from the seabed, and the rigid beam 6 is arranged at 1 / 2 of the part of the foundation pile 11 exposed from the seabed.

[0057] In this embodiment, a rigid beam 6 is provided between two damping devices 3 spaced apart along the height direction of the foundation pile 11, and both ends of the rigid beam 6 are respectively connected to two adjacent foundation piles 11. The two damping devices 3 are provided at 1 / 4 and 3 / 4 of the part of the foundation pile 11 exposed from the seabed, and the rigid beam 6 is provided at 1 / 2 of the part of the foundation pile 11 exposed from the seabed, thereby further improving the stability of the support system 1.

[0058] In some optional embodiments, the rigid cross beam 6 is made of UHPC ultra-high performance concrete, and a silicone permeable protective layer is provided on the rigid cross beam 6.

[0059] In this embodiment, the rigid beam 6 is made of UHPC ultra-high performance concrete, and a silicone permeable protective layer is provided on the rigid beam 6. The rigid beam 6 is permanently immersed in the ocean, and the surrounding water has a high chloride ion content and strong corrosiveness. It is necessary to take strong multiple anti-corrosion measures to protect it, so as to ensure the structural durability of the rigid beam 6 and prevent the rigid beam 6 from being damaged and affecting the stability of the support system 1. The ultra-high performance microstructure is dense, and the chloride ion penetration resistance is far better than that of ordinary concrete, with significant corrosion resistance and high durability. The silicone permeable protective agent has the characteristics of not changing the appearance of the concrete, being breathable and impermeable, and having excellent chloride ion penetration resistance, and is not prone to bubbling, cracking and shedding of film-forming coatings.

[0060] In this example, a prestressed steel strand 61 and special steel bars 62 are provided in the rigid cross beam 6 , and an anchor head cover 63 is provided at the connection between the rigid cross beam 6 and the foundation pile 11 .

[0061] In this example, the cross-sectional dimensions of the rigid beam 6 can be calculated according to the formula: B=1.0d,t 1 =t 2 ;

[0062] Wherein, H is the height of rigid beam 6, B is the width of rigid beam 6; t 1 and t 2 is the wall thickness in the beam height direction and the beam width direction, l 0 is the length of the rigid beam 6, and d is the diameter of the foundation pile 11.

[0063] In summary, when constructing the deep-water pile group foundation pedestal, the support system 1 includes a plurality of foundation piles 11 arranged at intervals, and the damping device 3 is arranged between two foundation piles 11. The damping device 3 includes a packaged tie beam 31, a first spring 32, a mass block 33 and a generator-type damping element 34. The packaged tie beam 31 connects two adjacent foundation piles 11, and an accommodating cavity is provided inside. The first spring 32, the mass block 33 and the generator-type damping element 34 are all arranged in the accommodating cavity. One end of the first spring 32 is connected to the inner wall of the packaged tie beam 31, and the other end is connected to the mass block 33. The mass block 33 is slidably connected to the packaged tie beam 31 and to the generator-type damping element 34. The generator-type damping element 34 is used to convert the energy generated during the damping process into electrical energy. Since the mass block 33 has the inertia to remain in place, when the encapsulated tie beam 31 moves, the encapsulated tie beam 31 and the mass block 33 move closer to or farther away from each other, compressing or stretching the first spring 32, and the damping force is converted into electrical energy by the generator-type damping element 34, which facilitates the use of the energy generated during the damping process and improves the energy utilization rate. This solves the problem that the main purpose of the existing energy-consuming device in the prior art is to dynamically adjust the damping coefficient according to the actual intensity of the seismic action on the pedestal, but it is difficult to effectively use the energy generated during the damping process, resulting in a problem of reduced energy utilization rate.

[0064] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0065] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0066] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A marine pile group foundation, characterized in that: include: A support system (1) comprising a plurality of foundation piles (11) arranged at intervals; A damping device (3) is arranged between two foundation piles (11), the damping device (3) comprising a packaged tie beam (31), a first spring (32), a mass block (33) and a generator-type damping element (34); the packaged tie beam (31) connects two adjacent foundation piles (11) and is provided with an accommodation cavity inside; the first spring (32), the mass block (33) and the generator-type damping element (34) are all arranged in the accommodation cavity; one end of the first spring (32) is connected to the inner wall of the packaged tie beam (31) and the other end is connected to the mass block (33); the mass block (33) is slidably connected to the packaged tie beam (31) and is connected to the generator-type damping element (34); the generator-type damping element (34) is used to convert energy generated during the damping process into electrical energy.

2. The marine pile group foundation according to claim 1, characterized in that: The damping device (3) further comprises a second spring (35), one end of the second spring (35) being connected to the mass block (33) and the other end being connected to the generator-type damping element (34).

3. The marine pile group foundation according to claim 2, characterized in that: An energy storage device (4) is also provided in the package tie beam (31), and the energy storage device (4) is connected to the generator-type damping element (34) and is used to collect the electric energy converted by the generator-type damping element (34) and transmit the converted electric energy to the sensor group (5).

4. The marine pile group foundation according to claim 3, characterized in that: A signal transmission unit is also provided in the energy storage device (4), and the energy storage device (4) is used to connect with the sensor group (5) by signal, receive information monitored by the sensor group (5), and transmit the information to the bridge health monitoring management system.

5. The marine pile group foundation according to claim 1, characterized in that: A guide rail (311) is provided inside the package tie beam (31), and the mass block (33) is slidably arranged on the guide rail (311).

6. The marine pile group foundation according to claim 1, characterized in that: The support system (1) comprises twenty foundation piles (11), which are arranged in four columns and five rows to form two inner and outer rectangles, and the damping device (3) is provided between two adjacent foundation piles (11) located on the sides of the inner and outer rectangles.

7. The marine pile group foundation according to claim 6, characterized in that: Two of the damping devices (3) are provided between two adjacent foundation piles (11) located on the inner and outer rectangular sides, and the two damping devices (3) are arranged at intervals along the height direction of the foundation piles (11).

8. The marine pile group foundation according to claim 7, characterized in that: A pedestal (2) is provided at the upper end of the support system (1), and all the damping devices (3) located between two adjacent foundation piles (11) on the inner and outer rectangular sides are respectively located in two spaced horizontal planes. The support system (1) is also provided with an annular maintenance passage (7) corresponding to the damping device (3), and a descending elevator (8) for entering the annular maintenance passage (7). The pedestal (2) is provided with eight entrances (81) for the descending elevator (8), which are respectively located at the four corners of the inner and outer rectangles. The descending elevator (8) is connected to the annular maintenance passage (7) located in the two spaced horizontal planes. The generator-type damping element (34) is used to convert the energy generated during the damping process into electrical energy and provide electrical energy to the descending elevator (8).

9. The marine pile group foundation according to claim 7, characterized in that: A rigid crossbeam (6) is provided between two damping devices (3) arranged at intervals along the height direction of the foundation pile (11), and two ends of the rigid crossbeam (6) are respectively connected to two adjacent foundation piles (11). The two damping devices (3) are arranged at 1 / 4 and 3 / 4 of the portion of the foundation pile (11) exposed from the seabed, and the rigid crossbeam (6) is arranged at 1 / 2 of the portion of the foundation pile (11) exposed from the seabed.

10. The marine pile group foundation according to claim 9, characterized in that: The rigid cross beam (6) is a UHPC ultra-high performance concrete component, and an organic silicon permeable protective layer is provided on the rigid cross beam (6).

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