Multi-wall nested gravity type open-hole semicircular ecological landscape breakwater

Abstract

This application provides a gravity-type perforated semi-circular ecological landscape breakwater with multiple nested walls. It includes a base plate, on which are arranged the following: a breakwater comprising an inner semi-circular breakwater, several middle arc-shaped breakwaters with progressively decreasing central angles, and an outer arc-shaped breakwater, with a wave-dissipating cavity formed between adjacent arc-shaped breakwaters. The wave-repellent side of the arc-shaped breakwaters is fixedly connected to the base plate; side walls are located on both sides of the breakwater; a partition wall is fixedly connected between the base plate and the inner semi-circular breakwaters, extending upwards and connecting to the upper arc-shaped breakwaters, with multiple first water passage holes through the partition wall, and multiple second water passage holes near the base plate on the arc-shaped breakwaters; a trench structure is located on the surface of the base plate; and a trestle structure. This application overcomes the limitations of traditional breakwaters that only possess wave-dissipating functions, achieving an organic unity of wave dissipation, ecological friendliness, and excellent landscape.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coastal and marine engineering, and particularly relates to a multi-wall nested gravity type open-hole semicircular ecological landscape breakwater. BACKGROUND

[0002] A breakwater is an important marine structure for resisting wave attack and protecting the water area in the harbor and the coastline. The semicircular breakwater is a typical type of breakwater, which has the advantages of beautiful appearance, high anti-inclination and anti-sliding capacity, light weight of the breakwater body, and high economic efficiency of the section, and is suitable for poor foundation conditions such as silt and the like. However, the semicircular section characteristics cause the top of the semicircular breakwater to be prone to overtopping under strong waves, and the semicircular top is not conducive to the passage of vehicles and personnel due to the limitation of the section shape of the breakwater body. In addition, the traditional breakwater design only considers the wave resistance capacity of the structure, and ignores the ecological friendliness and landscape effect, which has a negative effect on the marine ecological environment and biodiversity.

[0003] A Chinese patent with the application number CN202510192435.9 in the related art proposes a wave energy conversion type twin semicircular breakwater, which includes two semicircular breakwaters overlapping front and back, and a partition plate and a conversion module are arranged at the overlapping position. The semicircular breakwater on the wave-approaching side and the partition plate enclose a front air chamber, and the semicircular breakwater on the wave-avoiding side and the partition plate enclose a rear air chamber. The partition plate is provided with a slit to connect the front and rear air chambers. Further, the front air chamber is connected with the conversion module, and the outer wall of the front air chamber is provided with a water inlet to introduce waves into the air chamber. The twin semicircular breakwater combines the semicircular breakwater with wave power generation, which breaks through the single function limitation of the traditional semicircular breakwater that can only dissipate waves.

[0004] Although the wave energy conversion type twin semicircular breakwater has made a certain breakthrough in function integration, there are still some short boards to be solved from the overall design. For example, this type of breakwater has not yet solved the long-standing problems of overtopping of the top of the breakwater and low utilization efficiency of the space of the top of the breakwater; at the same time, this type of breakwater still tends to be the traditional breakwater design concept in the functional design, and fails to fully embody the ecological friendly development concept of providing more habitats for marine organisms and improving biodiversity in the current development of coastal structures, and has a limited effect on the recovery of the marine ecological system. SUMMARY

[0005] In order to solve the problems of overtopping of the top of the breakwater, insufficient utilization of the space of the top of the breakwater, and difficulty in meeting the ecological friendly development concept of the traditional breakwater, the present application provides a multi-wall nested gravity type open-hole semicircular ecological landscape breakwater.

[0006] The multi-wall nested gravity type open-hole semicircular ecological landscape breakwater provided by the present application adopts the following technical scheme:

[0007] The application discloses a multi-wall nested gravity type open-hole semicircle ecological landscape breakwater.

[0008] The breakwater comprises an inner layer semicircle breakwater, a plurality of middle layer arc breakwaters and an outer layer arc breakwater which are sequentially and spacedly arranged and have gradually decreased central angles, a wave absorbing cavity is formed between two adjacent arc breakwaters, an inner side of the inner layer semicircle breakwater is a structure cavity, and the back wave side of the arc breakwater is fixedly connected with a bottom plate.

[0009] Side walls are arranged on both sides of the breakwater and used for closing the structure cavity and all the wave absorbing cavities.

[0010] A partition wall is fixedly connected between the bottom plate and the inner layer semicircle breakwater, extends upwards and is connected with the upper arc breakwater, a plurality of first water passing holes are arranged through the partition wall, and a plurality of second water passing holes are arranged on the arc breakwater close to the bottom plate.

[0011] A groove structure is arranged on a surface of the bottom plate away from the outer layer arc breakwater.

[0012] A trestle structure is arranged on the top of the outer layer arc breakwater.

[0013] Further, a plurality of third water passing holes are arranged on the circumferential surface of the arc wall of the inner layer semicircle breakwater and the middle layer arc breakwater.

[0014] Further, the first water passing hole and the second water passing hole are both long holes arranged along the axial direction of the inner layer semicircle breakwater.

[0015] Further, a partition fence is arranged on the outer arc side of the arc breakwater, and the partition fence is provided with grooves for planting vegetation or providing habitats for marine organisms.

[0016] Further, the top of the inner layer semicircle breakwater is higher than the design low water level of an action water area, and the top of the outer layer arc breakwater is higher than the design warning water level of the action water area.

[0017] Further, the partition wall is provided with a wave overtopping access channel which is in communication with the wave absorbing cavity at a position corresponding to the wave absorbing cavity.

[0018] Further, the partition wall is provided with a plurality of first water passing holes at the upper part, the middle part and the lower part of the position in the structure cavity.

[0019] Further, the bottom plate is provided with a pressure relief hole at a position corresponding to the structure cavity.

[0020] Further, the bottom plate is provided with a slope at both ends along the radial direction of the breakwater, and the groove structure is distributed on the slope.

[0021] Further, the trestle structure comprises:

[0022] Support piles located on the leeward side of the breakwater and having top portions flush with the top of the outer circular-arc breakwater arch or the top end of the partition wall;

[0023] Trestle floorboards arranged between the top of the outer circular-arc breakwater arch or the top end of the partition wall and the support piles; and

[0024] Trestle guardrails installed on the side of the trestle floorboards.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. The present application proposes a wave-damping method of multiple nested circular-arc walls to solve the problem of overtopping of the top of the traditional breakwater. When facing larger waves, the overtopping phenomenon of the top of the traditional breakwater is frequent, which not only affects the structural safety, but also may cause damage to the surrounding area. The present breakwater structure adopts three layers of nested staggered and stacked circular-arc open-wall surfaces with a certain gap between them. Through the flow-guiding and energy-dissipating coupling effect of the open circular-arc wall and the graded energy-dissipating mechanism of the multiple staggered walls, the potential overtopping flow is gradually introduced into the breakwater chamber, and no overtopping occurs on the outside of the top of the outer circular-arc breakwater;

[0027] 2. Due to the influence of overtopping, the space at the top of the traditional breakwater often cannot be fully utilized, resulting in a certain waste of resources. On the basis of solving the problem of overtopping, the present application realizes the effective development of this part of space by setting a trestle structure at the top of the breakwater, which not only provides an excellent viewing platform for tourists to enjoy the sea view at close range and meets the water demand of tourists, but also further improves the practicality and attractiveness of the breakwater;

[0028] 3. The present application breaks through the limitation of traditional breakwaters only having wave-damping function and realizes the organic unity of wave-damping, ecological friendliness and excellent landscape. On the one hand, by setting a partition grid structure and a groove structure on the surface and the floorboard of the breakwater, the inside can be filled with soil to plant plants, and also provides abundant habitat, attachment and breeding space for marine organisms. On the other hand, a small amount of artificial ecological reefs can be filled in the breakwater cavity, which not only further enhances the stability of the structure, but also provides a suitable substrate for the growth of marine plants, thereby promoting the development of marine biodiversity;

[0029] 4. The application mainly takes a semicircular arc structure as a basic component, and has a simple and beautiful overall structure and high design rationality. In construction, the component can be manufactured by a segmented factory prefabrication method. This method has many advantages. First, the cost is low, and the project cost can be effectively controlled. Second, the construction is less affected by site conditions, reducing construction delays and quality problems caused by adverse weather, complex terrain and other site factors. Finally, the construction is convenient and fast, and each prefabricated segment can be produced in the factory with high quality, and then quickly assembled on site, greatly shortening the construction period and improving the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0031] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application;

[0032] Figure 2 is a lateral structure view of the embodiment of the application after the side wall is hidden;

[0033] Figure 3 is a schematic diagram of the structure of the embodiment of the application after the side wall is hidden;

[0034] Figure 4 is a relative position diagram of the partition fence on the circular arc breakwater of the embodiment of the application;

[0035] Figure 5 is a schematic diagram of the structure of the trestle structure of the embodiment of the application;

[0036] Figure 6 is a schematic diagram of the overall combination of the plurality of breakwater structure segments of the embodiment of the application.

[0037] Reference signs:

[0038] 1. Inner layer semicircular breakwater; 2. Middle layer circular arc breakwater; 3. Outer layer circular arc breakwater; 4. Side wall; 5. Bottom plate; 6. Trestle bottom plate; 7. Support pile; 8. Trestle guardrail; 9. Trench structure; 10. Third water passage; 11. Partition fence; 12. Partition wall; 13. First water passage; 14. Pressure relief hole; 15. Second water passage; 16. Wave overtopping access; 17. Wave dissipation cavity; 18. Structure cavity. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] With reference to Figure 1 , Figure 2 and Figure 3 , the embodiments of the present application disclose a multi-wall nested gravity type open-hole semicircle ecological landscape breakwater, which comprises a bottom plate 5, and the bottom plate 5 is provided with:

[0041] a breakwater, which comprises an inner layer semicircular breakwater 1, a plurality of middle layer circular arc breakwaters 2 and an outer layer circular arc breakwater 3 which are sequentially and spacedly sleeved and have gradually decreasing central angles, a wave dissipation cavity 17 is formed between adjacent two arc breakwaters, an inner side of the inner layer semicircular breakwater 1 is a structural cavity 18, and a back wave side of the arc breakwater is fixedly connected with the bottom plate 5, so that a wave-approaching side of the breakwater forms a plurality of head-end openings and wave dissipation channels which have gradually decreasing total arc lengths from bottom to top.

[0042] It should be particularly noted that, in the specific configuration, the middle layer circular arc breakwater 2 can be provided with one or a plurality, and in the embodiments, one is taken as an example, but it does not represent the limitation on the number. The arc breakwater refers to one or the whole of the inner layer semicircular breakwater 1, the middle layer circular arc breakwater 2 and the outer layer circular arc breakwater 3, which is a substitute name, and will not be explained too much in the following. In addition, the inner layer semicircular breakwater 1, the middle layer circular arc breakwater 2 and the outer layer circular arc breakwater 3 can be coaxially arranged, or the axes can be staggered, if the axes are staggered, the axes of the inner layer semicircular breakwater 1, the middle layer circular arc breakwater 2 and the outer layer circular arc breakwater 3 are sequentially and spacedly arranged along the surge direction, which can increase the span of the breakwater and reduce the arch top height, and in the embodiments, all the arc breakwaters are taken as an example of coaxial arrangement.

[0043] a side wall 4 arranged on both sides of the breakwater in the axial direction, which is used for closing the structural cavity 18 and all the wave dissipation cavities 17, can effectively prevent the wave from impacting the breakwater structure from the side, and enhance the overall stability of the structure.

[0044] The partition wall 12 is fixedly connected between the bottom plate 5 and the inner-layer semicircular breakwater 1, extends upward and is connected to the upper arc-shaped breakwater, a plurality of first water passing holes 13 are arranged through the partition wall 12, and a plurality of second water passing holes 15 are arranged on the arc-shaped breakwater close to the bottom plate 5. Specifically, the upper part, the middle part and the lower part of the partition wall 12 located in the structural cavity 18 are all provided with a plurality of first water passing holes 13, and the partition wall 12 is provided with a wave overtopping inlet channel 16 corresponding to the wave dissipation cavity 17.

[0045] The groove structure 9 is arranged on the surface of the bottom plate 5 away from the outer-layer circular arc-shaped breakwater 3, which simulates the shape of natural reefs, provides an ideal attachment site for marine organisms, is beneficial to the breeding and habitat of marine organisms, promotes the development of marine ecological diversity, and embodies the ecological friendly characteristics of the breakwater.

[0046] The trestle structure is installed on the top of the outer-layer circular arc-shaped breakwater 3.

[0047] In addition, referring to Figure 2 and Figure 3 , a plurality of third water passing holes 10 are arranged on the circumferential surface of the arc-shaped wall of the inner-layer semicircular breakwater 1 and the middle-layer circular arc-shaped breakwater 2. The first water passing hole 13 and the second water passing hole 15 are both long holes arranged along the axis of the inner-layer semicircular breakwater 1, and the third water passing hole 10 is a regular hole, which can be a round hole, a square hole or the like. The first water passing hole 13 and the second water passing hole 15 are arranged at intervals, and the third water passing hole 10 is arranged in an array. The size, the interval and the shape of the first water passing hole 13 and the second water passing hole 15 are determined according to the wave parameters of the sea area where the breakwater is located and the overall energy dissipation requirement of the structure, and a reasonable interval can ensure smooth flow and uniform energy distribution of the wave between the cavities.

[0048] Therefore, due to the gradually decreasing central angles of the inner-layer semicircular breakwater 1, the middle-layer circular arc-shaped breakwater 2 and the outer-layer circular arc-shaped breakwater 3, this design not only forms a unique hierarchical structure, but also creates a visual staggered effect, enhancing the aesthetic appearance of the breakwater. In terms of spatial arrangement, the arc-shaped breakwaters are arranged in a stacking manner, and the wave dissipation cavities 17 are formed between the arc-shaped breakwaters. When the wave acts on the breakwater structure, the inner-layer semicircular breakwater 1 first contacts the wave and produces an initial wave dissipation effect; if part of the water flow overtops the top of the inner-layer semicircular breakwater 1, the water flow is subjected to the flow guiding and energy dissipation effect of the wave dissipation cavity 17 between the middle-layer circular arc-shaped breakwater 2 and the inner-layer semicircular breakwater 1, and is forced to enter the structural cavity 18 through the wave dissipation channel between the two and the plurality of second water passing holes 15 at the end of the channel.

[0049] If a small amount of water flow over the outer wall of the middle circular arc breakwater 2 in the above process, similarly, this part of the water flow will be guided and dissipated by the outer side of the middle circular arc breakwater 2 and the inner side of the outer circular arc breakwater 3, and then gradually be forced to enter the structure cavity 18 through the wave dissipation channel and the second water flow hole 15 at the end of the channel, thereby ensuring that no wave overtopping occurs on the top of the outer circular arc breakwater 3.

[0050] The arc-shaped breakwaters of each layer are connected closely by the partition wall 12, which is a concrete structure with a certain thickness and mainly serves to support the breakwater and the trestle structure to prevent the structures from being damaged in the form of overturning under extreme wave loads. At the same time, the partition wall 12 is provided with a long strip-shaped first water flow hole 13 at different positions, which can guarantee the water exchange capacity between the cavities in the breakwater structure and the water inside and outside the breakwater structure, and enhance the connectivity between the water inside and outside the breakwater structure, thereby helping to promote water circulation and maintain the material and energy exchange of the marine ecosystem. Moreover, the partition wall 12 provided with the first water flow hole 13 and the arc-shaped breakwater provided with the second water flow hole 15 actually form a multi-pore structure, and the wave breaking phenomenon is more significant when the wave passes through the multi-pore structure, thereby improving the energy dissipation efficiency. Specifically, the arrangement of the first water flow hole 13 and the second water flow hole 15 breaks the relatively closed state of the front and rear cavities in the breakwater, and enhances the connectivity between the cavities, so that the water can flow freely between different cavities during the propagation and dissipation of the wave in the breakwater structure, further improving the wave dissipation performance of the breakwater.

[0051] Moreover, the third water flow hole 10 is only arranged on the inner semi-circular breakwater 1 and the middle circular arc breakwater 2. On the one hand, it can enhance the wave dissipation effect of the breakwater; when the wave acts on the breakwater, part of the water flow will flow into the structure cavity 18 through the third water flow hole 10, and turbulence and vortex will be generated in the process, thereby promoting wave breaking and enhancing the wave dissipation effect. On the other hand, the third water flow hole 10 is conducive to the exchange of seawater inside and outside the breakwater structure, avoiding the formation of a closed dead water area, and helping to maintain the ecological balance of the structure area. The surface of the outer circular arc breakwater 3 is not provided with the third water flow hole 10, which is a measure taken in consideration of the wave dissipation function requirement and the landscape function of the structure outside. Because the design of the third water flow hole 10 on the outer circular arc breakwater 3 may cause a small amount of wave to flow over the trestle and into the area behind the breakwater, which will affect the water experience of the tourists and the shelter effect of the area behind the structure.

[0052] Moreover, the main structure of the breakwater structure is a semicircular member. The semicircular design is not only reasonable in structure stress and can effectively disperse wave impact force, but also has a regular and simple appearance and has a significant prefabrication advantage. At the same time, the prefabricated segments are connected according to the site conditions, and the construction efficiency is guaranteed. The prefabricated members are made of high-strength and corrosion-resistant concrete or new composite materials to ensure that the members have sufficient strength and durability in harsh marine environments.

[0053] In addition, in order to further improve the ecological effect of the breakwater, referring to Figure 3 and Figure 4 , a separation grid 11 is arranged on the outer arc side of the arc-shaped breakwater, and the separation grid 11 has grooves for planting vegetation or providing habitats for marine organisms. Moreover, the bottom plate 5 is provided with a slope at both ends in the radial direction of the breakwater, and the groove structure 9 is distributed on the slope. These grooves can be filled with soil layers to plant vegetation layers, and can also provide habitats for marine organisms, thereby promoting ecological friendliness and achieving a landscape effect.

[0054] Alternatively, in other feasible embodiments, a small amount of artificial ecological reef can be further filled in the structural cavity 18 to enhance the structural stability, and the blocks can also play a role in triggering wave breaking and providing biological habitats.

[0055] Moreover, the top of the inner layer semicircular breakwater 1 is higher than the design low water level of the affected water area, and the top of the outer layer circular arc breakwater 3 is higher than the design warning water level of the affected water area; the bottom plate 5 is provided with a pressure relief hole 14 corresponding to the position of the structural cavity 18.

[0056] In this way, the bottom plate 5 bears the role of supporting the structure in the overall breakwater structure, and its design also fully considers the pressure balance and ecological needs; and when there is a pressure difference between the inside and outside of the breakwater, the pressure relief hole 14 can balance the pressure in time to prevent the structure from being damaged due to excessive pressure, and ensure the safety and stability of the breakwater in complex marine environments.

[0057] In addition, referring to Figure 1 and Figure 5 , the above-mentioned trestle structure includes:

[0058] The support pile 7 is located on the leeside of the breakwater, and the top is flush with the top of the outer layer circular arc breakwater 3 or the top of the partition wall 12; the support pile 7 provides stable support for the trestle structure and ensures the safety of the trestle structure under the action of waves.

[0059] The trestle bottom plate 6 is arranged between the top of the outer layer circular arc breakwater 3 or the top of the partition wall 12 and the support pile 7, and forms a stable whole.

[0060] The trestle guardrail 8 is installed on the side of the trestle bottom plate 6, specifically on the front and rear edges of the trestle bottom plate 6, to provide safety for tourists and also play a decorative role, so that the trestle is integrated with the marine environment and becomes a beautiful landscape.

[0061] Therefore, after the combination of the plurality of prefabricated breakwater structure segments, a dike line integrating wave dissipation, ecological friendliness and excellent landscape can be arranged in the water area along the line, as shown in Figure 6 .

[0062] The implementation principle of the multi-wall nested gravity type open-hole semicircular ecological landscape breakwater according to the embodiment of the present application is as follows:

[0063] When waves act on the breakwater, wave reflection effect of the three-arc-shaped breakwater wall surfaces and wave breaking effect caused by the second water passage 15, the third water passage 10 and the internal chamber of the structure are mainly used to realize wave dissipation. In the wave dissipation process, waves will first contact the outer wall surface of the inner semicircular breakwater 1; if the wave condition is relatively severe, overtopping may occur at the top of the wall surface, but the overtopping flow in the wave dissipation cavity 17 between the inner semicircular breakwater 1 and the middle arc-shaped breakwater 2 is subjected to the flow guiding effect and the energy dissipation effect of the third water passage 10, the separation grid 11 and the internal vegetation and marine organisms, and finally flows into the internal chamber 18.

[0064] If the wave intensity further increases, overtopping may also occur on the outer surface of the middle arc-shaped breakwater 2 wall surface; similarly, the overtopping flow will be subjected to the flow guiding and energy dissipation effect of the wave dissipation cavity 17 and flow into the internal chamber 18, thereby ensuring that overtopping does not occur on the outer side of the top of the outer arc-shaped breakwater 3 wall surface. The first water passage 13 in the middle and lower part of the partition wall 12 in the internal chamber 18 of the breakwater and the second water passage 15 in the lower part of each arc-shaped breakwater can be used to connect the water and gas inside and outside the breakwater, so as to prevent the pressure difference between the inside and outside of the structure from being too large during wave dissipation. At the same time, the separation grid 11 arranged on the surface of the arc-shaped breakwater and the rough surface of the groove structure 9 at the end of the bottom plate 5 can provide habitats for marine plants and animals and also play a certain wave dissipation role. Further, a small amount of artificial ecological reef stones can be filled in the breakwater during construction to enhance the stability of the structure, and these stones can also play a role in wave breaking and providing habitats for organisms.

[0065] The circular arc staggered visual effect and the vegetation crops planted on the outer surface of the breakwater after the breakwater is built have certain landscape characteristics compared with the traditional breakwater structure, and overtopping does not occur on the outermost breakwater. Therefore, the top space of the outermost breakwater can be fully utilized to arrange a trestle, thereby facilitating tourists to approach the marine ecology.

[0066] The main breakwater component adopted by the present application adopts a circular arc structure design, and its geometric shape is simple and smooth. The main structure is made of high-strength concrete material. In the production process of the component, the modular segmented prefabrication process is adopted, which can significantly improve the manufacturing efficiency and quality control level. For a small number of auxiliary structural parts, the on-site pouring construction method is adopted to ensure the adaptability and functionality of the overall structural system. Compared with the traditional semicircular breakwater structure, the present application inherits the excellent anti-overturning, anti-sliding performance and excellent landscape compatibility, and breaks through the two bottlenecks of the traditional technology through structural innovation design: on the one hand, a new wave dissipation structure system is adopted, which significantly reduces the overtopping amount of the top and improves the hydraulic performance of the breakwater; on the other hand, the ecological design concept is introduced, a bionic type bed structure and marine biological attachment interface are constructed, which effectively improves the ecological connectivity of the sea area while ensuring the breakwater function, and realizes the harmonious coexistence of marine engineering facilities and ecological environment.

[0067] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-walled nested gravity type open-hole semi-circular ecological landscape breakwater, characterized in that, The bottom plate is provided with: The breakwater includes an inner layer semicircular breakwater, a plurality of middle layer circular arc breakwaters and an outer layer circular arc breakwater which are sequentially and spacedly sleeved and have gradually decreasing central angles, a wave absorbing cavity is formed between adjacent two breakwaters, an inner side of the inner layer semicircular breakwater is a structure cavity, and a back wave side of the breakwater is fixedly connected with the bottom plate; Side walls are arranged on both sides of the breakwater to close the structure cavity and all the wave absorbing cavities; A partition wall is fixedly connected between the bottom plate and the inner layer semicircular breakwater, extends upward and connects the middle layer circular arc breakwater and the outer layer circular arc breakwater, a plurality of first water passing holes are arranged through the partition wall, and a plurality of second water passing holes are arranged near the bottom plate of the breakwater; A groove structure is arranged on a surface of the bottom plate away from the outer layer circular arc breakwater; And A trestle structure is installed on a top of the outer layer circular arc breakwater; A plurality of third water passing holes are arranged on the circular arc wall surface of the inner layer semicircular breakwater and the middle layer circular arc breakwater in a circumferential direction; The first water passing hole and the second water passing hole are both long holes arranged in an axial direction of the inner layer semicircular breakwater; A partition grid is arranged on an outer arc side of the breakwater, and the partition grid has grooves for planting vegetation or providing habitats for marine organisms; The partition wall is provided with a wave overtopping access channel which is in communication with the wave absorbing cavity at a position corresponding to the wave absorbing cavity; The bottom plate is provided with a pressure relief hole at a position corresponding to the structure cavity.

2. A multi-walled nested gravity open-hole semi-circular ecological landscape breakwater according to claim 1, characterized in that, The top of the inner layer semicircular breakwater is higher than a design low water level of an affected water area, and the top of the outer layer circular arc breakwater is higher than a design warning water level of the affected water area.

3. A multi-walled nested gravity open-hole semi-circular ecological landscape breakwater according to claim 1, characterized in that, The partition wall is provided with a plurality of the first water passing holes at an upper part, a middle part and a lower part of the structure cavity.

4. A multi-walled nested gravity open-hole semi-circular ecological landscape breakwater according to claim 1, wherein, The bottom plate is provided with inclined surfaces at both ends in a radial direction of the breakwater, and the groove structure is distributed on the inclined surfaces.

5. A multi-walled nested gravity open-hole semi-circular ecological landscape breakwater according to claim 4, wherein, The trestle structure includes: Support piles are located on a back wave side of the breakwater and have top parts flush with a vault top of the outer layer circular arc breakwater or a top end of the partition wall; A trestle bottom plate is arranged between the vault top of the outer layer circular arc breakwater or the top end of the partition wall and the support piles; and A trestle guardrail is installed on side edges of the trestle bottom plate.

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