Breakwater structure for wave power generation and construction method thereof

Abstract

The invention relates to a breakwater structure for wave power generation and a construction method of the breakwater structure. The breakwater structure comprises a lower barrel body, an upper caisson and a power generation device. A compartment is arranged in the upper caisson, and the power generation device is installed in the compartment. A wave inlet hole is formed in the wave facing side of the upper caisson, a cast-in-place adjusting node is arranged on the top of the upper caisson, and a wave wall, a cable pipe trench, a detachable road plate and an overhauling device are sequentially arranged above the node. The breakwater structure and the wave power generation system are integrated by adopting standard barrel type foundation factory prefabrication and floating transportation installation and combining cast-in-place joint leveling and the detachable road plates. The structure has the advantages of being convenient to construct, controllable in cost, stable in structure, convenient to maintain and the like, is suitable for wave power generation under medium and small wave conditions, and is particularly suitable for green power supply and coast protection in areas such as ports and islands.

Description

Technical Field

[0001] This invention relates to the field of barrel foundation technology, specifically to a breakwater structure for wave power generation and its construction method. Background Technology

[0002] Wave energy, as a clean and renewable marine energy source, boasts advantages such as high energy density, wide distribution, and all-weather availability, making it particularly suitable for powering breakwaters and remote islands. Integrating wave power generation devices into breakwater structures can achieve both coastal protection and clean energy generation, aligning with national strategic goals for green ports and sustainable development.

[0003] However, existing wave power generation breakwater structures still face some technical bottlenecks: on the one hand, traditional wave power generation structures mostly adopt floating or pile-foundation designs, which are complex, difficult to construct, and costly; on the other hand, existing structures often lack adaptability to changes in tidal range and wave direction, leading to unstable power generation efficiency. Furthermore, most existing technologies do not fully consider the convenience of equipment installation, inspection, and maintenance, affecting the long-term operational reliability of the system.

[0004] Some breakwaters capable of generating electricity have already appeared in the prior art. For example, Chinese invention patent application CN119956720A (publication date May 9, 2025) discloses a floating breakwater that generates electricity using wave energy, including: a breakwater buoy box, with an oscillating water column cavity inside the breakwater buoy box; a power generation component, with a first air inlet and a second air inlet both equipped with one-way valves, and a first air outlet and a second air outlet both equipped with one-way valves, and the two ends of the power generation component selectively connected to the first air inlet and the second air inlet respectively; or the two ends of the power generation component selectively connected to the first air outlet and the second air outlet respectively.

[0005] For example, Chinese invention patent application CN120759223A (published on October 10, 2025) discloses a breakwater with an embedded oscillating water column wave energy generation device that adapts to tidal range changes. The breakwater includes a breakwater body, and the wave-facing surface of the breakwater body is provided with an installation groove. There are multiple installation grooves, which are spaced apart from each other in the horizontal direction. A drive system is provided in the installation groove. The drive system is connected to the oscillating water column wave energy generation device, and drives the oscillating water column wave energy generation device to move up and down in the vertical direction.

[0006] For example, Chinese invention patent application CN120592162A (published on September 5, 2025) discloses a novel box-type foundation breakwater structure, its operation, and installation method, including a front row of power generation towers and a rear row of power generation towers; the front row of power generation towers is equipped with a front guide pipe and a horizontal front elastic unit, and the rear row of power generation towers is equipped with a rear guide pipe and a horizontal rear elastic unit. This application can improve the recovery and utilization rate of wave energy, thereby improving the power generation efficiency of wave energy.

[0007] Patent application CN119956720A describes a floating breakwater structure, which has weak resistance to wind and waves and is difficult to maintain. Patent application CN120759223A has a complex structure, high cost of the drive system, and is difficult to integrate on a large scale. Patent application CN120592162A uses a combination of front and rear row power generation towers for energy dissipation and power generation, which is large in size and complex in construction, making it unfavorable for rapid promotion.

[0008] Therefore, there is an urgent need for a wave power generation breakwater structure that is simple in structure, easy to construct, cost-controllable, and easy to install and maintain, so as to meet the power generation needs under small and medium wave conditions and achieve organic integration with port, island and other projects. Summary of the Invention

[0009] To address the above technical problems, this invention provides a breakwater structure for wave power generation, comprising: a lower barrel, an upper caisson, and a power generation device; the upper caisson is installed above the lower barrel, the upper caisson includes a compartment, the power generation device is disposed within the compartment, a wave inlet is provided on the wave-facing side of the upper caisson, an adjustment node is also installed on the top of the upper caisson, a cable trench and a wave-breaking wall are provided above the adjustment node, the wave-breaking wall is installed on the upper surface of the adjustment node on the wave-facing side, and the cable trench is located on the rear side of the wave-breaking wall.

[0010] Furthermore, the power generation device is a wave power generation device.

[0011] Furthermore, the upper caisson has three compartments, which is the most suitable volume for the compartments that serve as air chambers. Of course, the number of compartments can also be one, two, or four, and this invention does not impose any specific limitations.

[0012] Furthermore, the number of wave inlets is two to four. Too many wave inlets on the side wall of the upper caisson will affect the structural strength of the upper caisson, while too few will affect the amount of water entering and thus the power generation efficiency.

[0013] Furthermore, the compartment is also equipped with a support frame, on which the power generation device is mounted.

[0014] Furthermore, the upper caisson is also provided with a wave inlet on the wave-repellent side.

[0015] Furthermore, road slabs are detachably installed between the adjustment nodes.

[0016] Furthermore, a maintenance device is also provided above the road slab. The maintenance device includes a track, a gantry crane, and a hand hoist. The track is installed on the top of the adjustment node, the gantry crane is installed on the track and can move along the track, and the top of the gantry crane is equipped with a hand hoist for performing routine maintenance of the wave power generation device.

[0017] Furthermore, the gantry crane and the track are located on the rear side of the cable trench.

[0018] Furthermore, the wave power generation device includes: a shell, the lower part of which is a water inlet area, and the upper part of which is an air chamber, the air chamber containing a column of seawater to realize the conversion of wave energy into air energy; the top surface of the air chamber of the shell is provided with a water outlet to allow excess waves to flow out of the air chamber; an exhaust port is provided between the water inlet area and the air chamber to form an air circulation channel and ensure stable air chamber pressure. A turbine, which is housed within a casing and driven to rotate by compressed air, converts aerodynamic kinetic energy into mechanical energy; A generator, which is coaxially connected to the turbine, converts mechanical energy into electrical energy.

[0019] Furthermore, the positions of the water inlet area and the wave inlet holes are correspondingly arranged to allow waves to enter the air chamber, thereby driving the water column up and down. This invention also provides a construction method for a breakwater structure used for wave power generation, comprising the following steps: Step S1: Construction preparation and prefabrication of components. The area where the breakwater will be installed will be cleared of sea debris and obstacles. Prefabricated components will be completed in the factory according to the preliminary design. The prefabricated components include structural units, which include a lower barrel and an upper caisson. Step S2: Install the support bracket and connect it to the steel plate pre-embedded in the side wall of the upper caisson; Step S3: Install the structural unit, drag the structural unit to the designated position and submerge it. After installation, cast the adjustment node on the top of the upper caisson and set up a wave wall on the wave-facing side of the adjustment node. Set up a cable trench behind the wave wall. Step S4: Install the generator. Install the generator on the support bracket, connect the cable to the generator, and lay it in the cable trench.

[0020] Step S5: Rockfill bottom protection. Rockfill operations are carried out around the upper caisson to form a rockfill bottom protection.

[0021] Furthermore, the prefabrication method of the structural unit in step S1 includes the following steps: Step S11: Prefabricate the lower barrel body. After the lower barrel body reaches the required strength, construct the upper caisson structure based on the lower barrel body. Step S12: Embed steel plates in the side wall of the upper caisson for installing the support brackets; install hidden beams around the wave inlet for structural reinforcement; Step S13: After the upper caisson is completed, the airtightness of the structural unit is checked.

[0022] Furthermore, the prefabricated components mentioned in step S1 also include road slabs.

[0023] Further, step S6: Installation of maintenance equipment; anchoring the rail at the rear of the cable trench, installing the hand hoist on the gantry crane, and installing the gantry crane on the rail.

[0024] Further, in step S7: road slab installation, pre-drill mounting holes on the road slab, pre-embed mounting seats on the adjustment nodes, lift the road slab with the maintenance device, and place the mounting holes and mounting seats accordingly.

[0025] Compared with existing technologies, the advantages and effects of this application are as follows: 1. This application adopts the standard barrel foundation and the superstructure caisson prefabrication as an integrated unit, combined with the floating and submerging installation process, which greatly reduces the time and difficulty of offshore operations and construction, and reduces construction costs.

[0026] 2. This application sets up a compartment and a wave inlet on the wave-facing side inside the upper caisson, and places the power generation device inside the compartment, so that the main structure of the breakwater can also serve as a wave energy capture chamber, thereby realizing the reuse of structural functions and saving engineering space and cost.

[0027] 3. This application enables precise leveling of the breakwater front line by setting a cast-in-place adjustment node between the lower barrel and the upper caisson, adapting to uneven seabed settlement, and ensuring long-term structural stability and efficient operation of the power generation device.

[0028] 4. This application pre-embeds steel plates in the upper caisson to fix multi-layer supports, so that the power generation unit can be quickly installed with bolts; the top of the embankment is equipped with detachable road slabs, gantry cranes and track systems, providing a safe and convenient working platform for the daily maintenance and replacement of the power generation equipment, and significantly reducing the total life cycle operation and maintenance costs.

[0029] 5. This application deconstructs the complex offshore wave power generation breakwater project into an industrialized construction process of "standardized prefabrication, integrated floating transport, modular installation, and systematic integration." This not only significantly improves construction efficiency and quality control, and reduces project costs and risks, but also, through ingenious process design, deeply integrates the construction phase with subsequent operation and maintenance needs, forming a highly efficient, economical, reliable, and sustainable proprietary construction technology system. Compared with the complex drive system installation or floating structure anchoring processes involved in the prior art, this method focuses more on the integrity of the structure, ease of installation, and maintainability throughout its entire lifecycle, demonstrating significant progress and practicality.

[0030] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0031] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0033] in: Figure 1 A schematic diagram of a breakwater structure for wave power generation; Figure 2 This is a cross-sectional view of a breakwater structure used for wave power generation; Figure 3 A schematic diagram of a power generation device for a breakwater structure used for wave power generation; Figure 4 This is a construction flowchart for a breakwater structure used for wave power generation.

[0034] Explanation of reference numerals in the attached drawings: 1-Lower tank; 2-Upper caisson; 21-Compartment; 22-Supporting bracket; 23-Wave inlet; 3-Power generation unit; 31-Turbine; 32-Generator; 33-Casing; 34-Water Inlet; 35-Air Chamber; 36-Water Outlet; 37-Exhaust Port; 4-Adjusting Node; 41-Mounting Base; 5-Road Slab; 51-Mounting Hole; 6-Cable Trench; 7-Wave Wall; 8-Maintenance Device; 81-Rail; 82-Gantry; 83-Hand Chain Hoist. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0036] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0037] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0038] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it have an "or" relationship.

[0039] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0040] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0041] Example 1 This embodiment describes a breakwater structure for wave power generation.

[0042] Please refer to Figure 1-2 As shown, Figure 1 A schematic diagram of a breakwater structure for wave power generation; Figure 2 This is a cross-sectional view of a breakwater structure used for wave power generation; A breakwater structure for wave power generation includes: a lower barrel 1, an upper caisson 2, and a power generation device 3; the upper caisson 2 is installed above the lower barrel 1, the upper caisson 2 includes a compartment 21, the power generation device 3 is disposed in the compartment 21, a wave inlet 23 is provided on the wave-facing side of the upper caisson 2, an adjustment node 4 is also installed on the top of the upper caisson 2, a cable trench 6 and a wave wall 7 are also provided above the adjustment node 4, the wave wall 7 is installed on the upper surface of the adjustment node 4 on the wave-facing side, and the cable trench 6 is disposed on the rear side of the wave wall 7.

[0043] The technical effect of this embodiment is that it provides a basic wave power generation breakwater structure. By combining the lower barrel and the upper caisson, it achieves an integrated layout of structural stability and power generation space, providing a basic framework for subsequent functional expansion.

[0044] Example 2 Based on Example 1, this example discloses a further design of a breakwater structure for wave power generation.

[0045] Furthermore, the power generation device 3 is a wave power generation device.

[0046] Furthermore, the upper caisson 2 has three compartments 21, which is the most suitable volume for the compartments 21 that serve as air chambers. Of course, it is also possible to have one, two, or four compartments 21, and the present invention does not impose any specific restrictions.

[0047] Furthermore, the number of wave inlet holes 23 is two to four. Too many wave inlet holes 23 on the side wall of the upper caisson 2 will affect the structural strength of the upper caisson 2, while too few will affect the amount of water waves entering and affect the power generation efficiency.

[0048] Furthermore, a support bracket 22 is provided inside the compartment 21, and the power generation device 3 is installed on the support bracket 22.

[0049] Furthermore, the upper caisson 2 is also provided with a wave inlet 23 on the wave-repellent side.

[0050] Furthermore, a road slab 5 is detachably installed between the adjustment nodes 4.

[0051] Furthermore, a maintenance device 8 is also provided above the road slab 5. The maintenance device 8 includes a track 81, a gantry crane 82, and a hand hoist 83. The track 81 is installed on the top of the adjustment node 4. The gantry crane 82 is installed on the track 81 and can move along the track. The top of the gantry crane 82 is equipped with a hand hoist 83 for performing routine maintenance of the wave power generation device.

[0052] Furthermore, the gantry crane 82 and the track 81 are located on the rear side of the cable trench 6.

[0053] The technical advantages of this embodiment are as follows: The addition of mounting brackets and multi-layered supports facilitates modular installation and fixation of the wave power generation equipment, improving installation accuracy and stability. The installation of detachable road slabs and maintenance devices (rails, gantry cranes, and manual hoists) enables convenient hoisting and maintenance of the equipment, reducing operation and maintenance costs. An optional wave inlet can be installed on the back wave side to enhance wave capture capabilities and improve power generation efficiency.

[0054] Example 3 Based on Example 1, this example discloses a further design of a breakwater structure for wave power generation.

[0055] Please refer to Figure 3 As shown, Figure 3 A schematic diagram of a power generation device for a breakwater structure used for wave power generation; Furthermore, the wave power generation device 3 includes: a shell 33, the lower part of which is provided with a water inlet area 34, and the upper part of which is an air chamber 35. The air chamber 35 contains a column of seawater to realize the conversion of wave energy into air energy. The top surface of the air chamber 35 is provided with a water outlet 36 to allow excess waves to flow out of the air chamber. An exhaust port 37 is provided between the water inlet area 34 and the air chamber 35 to form an air circulation channel and ensure stable air chamber pressure. Turbine 31, which is disposed inside housing 33, is driven to rotate by compressed air, converting air kinetic energy into mechanical energy; The generator 32 is coaxially connected to the turbine 31 and converts mechanical energy into electrical energy.

[0056] Furthermore, the positions of the water inlet zone 34 and the wave inlet 23 are correspondingly set to allow waves to enter the air chamber, thereby driving the water column to rise and fall.

[0057] The technical effects of this embodiment are as follows: When waves move towards the breakwater structure, seawater enters the air chamber through the wave inlet and water intake area, pushing the water column inside the air chamber upwards. This causes the sealed air above the air chamber to be rapidly compressed, forming a high-pressure airflow. The high-pressure airflow rushes from the top of the air chamber towards the turbine, driving the turbine blades to rotate at high speed. This converts the pressure energy of the air into the mechanical energy of the turbine, driving the generator to operate continuously. Ultimately, the mechanical energy is stably converted into electrical energy and fed into the power grid. When the waves recede, the water column inside the air chamber drops, creating a negative pressure inside the air chamber. External air is then drawn into the air chamber in the reverse direction through the turbine, replenishing the air space.

[0058] Example 4 Based on Example 1, this example discloses a construction method for a breakwater structure used for wave power generation.

[0059] Please refer to Figure 3 As shown, Figure 3 This is a construction flowchart for a breakwater structure used for wave power generation.

[0060] A construction method for a breakwater structure used for wave power generation includes the following steps: Step S1: Construction preparation and prefabrication of components. The area where the breakwater will be installed will be cleared of sea and obstacles. Prefabricated components will be completed in the factory according to the preliminary design. The prefabricated components include structural units, which include a lower barrel 1 and an upper caisson 2. Step S2: Install the support bracket 22 and connect the support bracket 22 to the steel plate pre-embedded in the side wall of the upper caisson 2; Step S3: Install the structural unit, drag the structural unit to the designated position and submerge it. After installation, cast the adjustment node 4 on the top of the upper caisson 2, and set up a wave wall 7 on the wave-facing side of the adjustment node 4. Set up a cable trench 6 behind the wave wall 7. Step S4: Install the power generation device 3, install the power generation device 3 on the support bracket 22, connect the cable to the power generation device 3, and arrange it in the cable trench 6.

[0061] Step S5: Rockfill bottom protection. Rockfill operation is carried out around the upper caisson 2 to form a rockfill bottom protection.

[0062] Furthermore, the prefabrication method of the structural unit in step S1 includes the following steps: Step S11: Prefabricate the lower barrel 1. After the lower barrel 1 reaches the required strength, construct the upper caisson 2 structure based on the lower barrel 1. Step S12: Embed steel plates in the side wall of the upper caisson 2 for installing the support bracket 22; install hidden beams around the wave inlet 23 for structural reinforcement; Step S13: After the upper caisson 2 is completed, the airtightness of the structural unit is checked.

[0063] Furthermore, the prefabricated component mentioned in step S1 also includes road slab 5.

[0064] Further, step S6: Installation of maintenance device 8; anchoring the track 81 at the rear side of the cable trench 6, installing the hand hoist 83 on the gantry crane 82, and installing the gantry crane 82 on the track 81.

[0065] Further, in step S7: road slab 5 is installed. Mounting holes 51 are reserved on the road slab 5, and mounting seats 41 are pre-embedded on the adjustment node 4. The road slab 5 is lifted with the maintenance device 8, and the mounting holes 51 and mounting seats 41 are placed accordingly.

[0066] The technical advantages of this embodiment are: it provides a complete construction method covering the entire process of prefabrication, installation, and commissioning, emphasizes the combination of factory prefabrication and on-site assembly, improves construction efficiency and quality control, and is suitable for large-scale engineering applications.

[0067] Example 5 Based on Example 4, this example discloses the specific construction process of a 7500m breakwater structure for wave power generation: 1. Based on the hydrogeological conditions, the breakwater is composed of multiple sets of barrel-shaped foundation structural units. The main dimensions of the lower barrel are 40m × 20m × 14m. The upper caisson is 7.2m wide and 20.0m high, and is divided into three compartments. The upper caisson is constructed in sections, with the section elevation initially set at 5.0m, later extended to 6.5m. The wave-breaking wall is 2.5m high, with the top elevation at 9.0m.

[0068] 2. Each compartment of the upper caisson has two wave inlets, with an opening width of 4.5m and a height of 1.5m. The openings are reinforced with hidden beams. 20mm thick steel plates are pre-embedded in the side walls and around the caisson. After the caisson is prefabricated, multi-layer supports will be installed in the factory.

[0069] 3. Before construction, clear obstacles and verify the dimensions of the bucket foundation. Then, the bucket foundation is fabricated in a large professional prefabrication plant. After the bucket reaches the required strength, the superstructure is constructed. Before the bucket is lowered into the water, the airtightness of the bucket should be checked.

[0070] 4. The barrel is towed to the designated position and submerged. After installation, the construction of the upper cast-in-place adjustment nodes, wave-breaking wall, rail anchoring, cable trench, and riprap bottom protection is carried out.

[0071] 5. After the superstructure is installed, the wave power generation equipment is installed and fixed, followed by the installation and commissioning of the detachable walkway panels and gantry crane.

[0072] The technical effects of this embodiment are as follows: Taking a 7500m breakwater as an example, the structural parameters and construction steps are specifically explained, demonstrating the feasibility and economy of this invention in large-scale engineering projects, and providing a replicable implementation example for similar projects.

[0073] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Various modifications and variations are possible with respect to the present invention. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A breakwater structure for wave power generation, characterized in that, include: The lower barrel (1), the upper caisson (2), and the power generation device (3) are arranged in the lower barrel (1), the upper caisson (2) is installed above the lower barrel (1), the upper caisson (2) includes a compartment (21), the power generation device (3) is arranged in the compartment (21), the upper caisson (2) is provided with a wave inlet (23) on the wave-facing side, the upper caisson (2) is also provided with an adjustment node (4) on the top, the adjustment node (4) is also provided with a cable trench (6) and a wave-breaking wall (7) above the adjustment node (4), the wave-breaking wall (7) is installed on the upper surface of the adjustment node (4) on the wave-facing side, and the cable trench (6) is arranged on the rear side of the wave-breaking wall (7).

2. The breakwater structure for wave power generation according to claim 1, characterized in that, The compartment (21) is also provided with a support bracket (22), and the power generation device (3) is installed on the support bracket (22).

3. A breakwater structure for wave power generation according to claim 1 or 2, characterized in that, Road slabs (5) are detachably installed between the adjustment nodes (4).

4. A breakwater structure for wave power generation according to claim 3, characterized in that, A maintenance device (8) is also provided above the road slab (5). The maintenance device (8) includes a track (81), a gantry crane (82) and a hand hoist (83). The track (81) is installed on the top of the adjustment node (4). The gantry crane (82) is installed on the track (81). The hand hoist (83) is installed on the top of the gantry crane (82).

5. A breakwater structure for wave power generation according to claim 4, characterized in that, The gantry crane (82) and the track (81) are located on the rear side of the cable trench (6).

6. The construction method of the breakwater structure for wave power generation according to any one of claims 1-5, characterized in that, Includes the following steps: Step S1: Construction preparation and prefabrication of components. The area where the breakwater is to be installed is cleared of sea and obstacles. Prefabricated components are completed in the factory according to the previous design. The prefabricated components include structural units, which include a lower barrel (1) and an upper caisson (2). Step S2: Install the support bracket (22) and connect the support bracket (22) to the steel plate pre-embedded in the side wall of the upper caisson (2); Step S3: Install the structural unit, drag the structural unit to the designated position and submerge it. After installation, cast the adjustment node (4) on the top of the upper caisson (2), and set up a wave wall (7) on the wave-facing side of the adjustment node (4). Set up a cable trench (6) on the back side of the wave wall (7). Step S4: Install the power generation device (3), install the power generation device (3) on the support bracket (22), connect the cable to the power generation device (3) and arrange it in the cable trench (6); Step S5: Rock throwing for bottom protection. Rock throwing is carried out around the upper caisson (2) to form a rock throwing bottom protection.

7. The construction method of the breakwater structure for wave power generation according to claim 6, characterized in that, The prefabricated components mentioned in step S1 also include road slabs (5).

8. The construction method of the breakwater structure for wave power generation according to claim 6, characterized in that, The prefabrication method of the structural unit in step S1 includes the following steps: Step S11: Prefabricate the lower barrel (1). After the lower barrel (1) reaches the required strength, construct the upper caisson (2) structure based on the lower barrel (1). Step S12: Embed steel plates in the side wall of the upper caisson (2) for installing the support bracket (22); install hidden beams around the wave inlet (23) for structural reinforcement; Step S13: After the upper caisson (2) is completed, the airtightness of the structural unit is checked.

9. The construction method of the breakwater structure for wave power generation according to claim 7 or 8, characterized in that, It also includes step S6: installation of maintenance device (8); anchoring the rail (81) at the position behind the cable trench (6), installing the hand hoist (83) on the gantry crane (82), and installing the gantry crane (82) on the rail (81).

10. The construction method of the breakwater structure for wave power generation according to claim 9, characterized in that, It also includes step S7: road slab (5) installation, pre-reserving installation holes (51) on the road slab (5), pre-embedding mounting seats (41) on the adjustment node (4), lifting the road slab (5) with the maintenance device (8), and placing the installation holes (51) and mounting seats (41) in corresponding positions.

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