Large wave test pool

Abstract

The invention provides a large wave test pool which is applied to the technical field of test pools, the large wave test pool comprises a middle bottom plate and wall plate foundation sections located on the two sides of the middle bottom plate, each wall plate foundation section is of an L-shaped cast-in-place concrete pile foundation structure and specifically comprises a foundation bottom plate and a pool side wall, the inner wall face of the pool side wall is constructed to be a continuous step face with two sets of treads and kicking faces, a roughly rectangular vibration reduction cavity is formed in the position, corresponding to each kicking face, of the interior of the pool side wall, and the vibration reduction cavities are constructed to enable the wall thicknesses of all the positions of the pool side wall to be basically equal. The outer wall face of the pool side wall is constructed to be a step face with two kicking faces and a step face, the step shape of the outer wall face corresponds to the inner wall face, the step face in the middle of the step of the inner wall face is connected with the corresponding step face of the outer wall face, and the step face at the top of the step of the inner wall face is connected with the kicking face at the top of the outer wall face. The large wave test pool has the advantage that resonance between the pool wall of the pool and waves is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wave test tank, in particular to a large wave test tank. BACKGROUND

[0002] Wave laboratory mainly uses wave maker to make waves in the pool to test the performance of ships. Waves have a vibration frequency. The concrete of the pool wall itself has a fixed vibration frequency. If the frequency is similar under the same direction, resonance is easy to occur. Resonance is easy to cause cracks in the concrete. Long-term resonance will cause material fatigue, reduce durability and even cause sudden damage.

[0003] Therefore, calculating and designing the appropriate inherent vibration frequency of the pool wall becomes an important part of the pool wall design. In the prior art, the inherent frequency of the pool is adjusted by increasing the wall thickness of the pool wall, using damping materials or reinforcing ribs to avoid the frequency range of the waves, but the corresponding foundation reinforcement cost will be significantly increased, and it needs to be maintained for a full cycle. Mass concrete pouring is easy to produce temperature cracks, needs to be constructed in blocks and increase cooling measures, and prolongs the construction period.

[0004] Therefore, how to adjust the inherent frequency of the pool wall of the test pool without increasing the material of the existing main structure, avoid the resonance between the pool wall and the wave, and achieve the vibration reduction effect of the whole pool main structure becomes a technical problem to be solved at present. SUMMARY

[0005] Therefore, the large wave test tank provided by the embodiments of the present application has the advantage of avoiding resonance between the pool wall and the wave.

[0006] The embodiments of the present application provide the following technical solutions: A large wave test tank, comprising a middle bottom plate and wall plate base sections located on both sides of the middle bottom plate, the wall plate base sections being L-shaped cast-in-place concrete pile foundation structures, specifically comprising a base bottom plate and a pool side wall; the inner wall surface of the pool side wall is structured as a continuous stepped surface with two groups of tread surfaces and kick surfaces, the inside of the pool side wall corresponds to the position of each kick surface to form a substantially rectangular vibration reduction cavity, and the vibration reduction cavity is structured so that the wall thickness of the pool side wall is substantially equal everywhere.

[0007] To optimize the above-mentioned solutions, the following technical measures are taken: As one of the implementation manners, the outer wall surface of the pool side wall is structured as a stepped surface with two groups of kick surfaces and one group of tread surfaces, the stepped shape of the outer wall surface corresponds to the inner wall surface, the tread surface in the middle of the inner wall surface steps is connected with the corresponding tread surface of the outer wall surface, and the tread surface at the top of the inner wall surface steps is connected with the top kick surface of the outer wall surface.

[0008] As one of the embodiments, the inner wall surface has a lower step and an upper step connected with each other, the pool side wall forms a set of damping cavities corresponding to the lower step, and the pool side wall forms another set of damping cavities corresponding to the upper step, and the outer wall surface is supported by a rib plate between the tread surface corresponding to the lower step and the kick surface.

[0009] As one of the embodiments, the outer wall surface is a vertical support surface, the inner wall surface has a lower step and an upper step connected with each other, the pool side wall forms two sets of damping cavities distributed between the inner wall surface and the outer wall surface corresponding to the lower step, and the pool side wall forms a set of damping cavities corresponding to the upper step.

[0010] As one of the embodiments, the kick surface of the outer wall surface corresponding to the lower step coincides with the kick surface of the inner wall surface corresponding to the upper step in the vertical direction, and the wall thicknesses of the pool walls corresponding to the two kick surfaces are equal.

[0011] As one of the embodiments, the test pool further comprises a wave generator, the wave generator comprises a pre-buried connecting piece and a wave plate, the damping cavity corresponding to the upper step is used as a wave generator control room and / or a maintenance corridor, the pre-buried connecting piece is connected to the tread surface of the lower step of the inner wall surface, and the wave plate is connected to the pre-buried connecting piece.

[0012] As one of the embodiments, the damping cavities corresponding to the lower step of the inner wall surface and the damping cavities corresponding to the upper step at least partially overlap in the vertical direction.

[0013] As one of the embodiments, the wave plate is a swing plate, and the lower end of the swing plate is swingably connected to the pre-buried connecting piece through a fixed rotating shaft.

[0014] As one of the embodiments, the wall plate base sections on both sides and the intermediate bottom plate jointly define the main structure of a U-shaped fully-buried test pool.

[0015] As one of the embodiments, a shrinkage joint is arranged between the side edges of the intermediate bottom plate and the front toes of the wall plate base sections, and a stainless steel water stop belt is arranged in the shrinkage joint.

[0016] Compared with the prior art, the above at least one technical solution adopted by the embodiments of the present application can achieve at least the following beneficial effects: One, the test pool in the embodiment is shaped by the side wall of the pool and its attached structure, that is, the wall plate basic section, to avoid resonance between the side wall of the pool and the wave without increasing the material of the existing pool structure, so as to achieve the overall damping effect of the pool structure. Specifically, a rectangular damping cavity is formed in the inner wall of the pool side wall, and the inner and outer walls are formed in a stepped structure, which can further reduce the material of the structure and avoid resonance between the pool side wall and the wave. Through finite element simulation and test, the shape structure of the pool wall can achieve the technical purpose and realize the overall damping effect of the pool structure.

[0017] Further, the damping cavities corresponding to the upper steps and the damping cavities corresponding to the lower steps in the test pool in the embodiment at least partially overlap in the vertical direction. This structural layout can ensure that the wave flow contacts the wall of the corresponding damping cavity on the water side, rather than a solid structure, thereby reducing the risk of local resonance and further enhancing the overall damping effect of the pool on the wave flow.

[0018] Further, in the test pool in the embodiment, the rocker plate wave maker is installed on the tread of the lower step of the inner wall of the pool side wall through a fixed shaft. Compared with the push plate wave maker, the rocker plate wave maker has almost unchanged center of gravity and small inertia force, so the vibration of the wave maker itself is relatively small. Moreover, the rocker plate generates waves by swinging, and the inertia force can be transmitted through the bottom damping cavity where the tread is located in the vertical direction and through the damping cavity where the back kick surface is located in the horizontal direction, thereby further reducing the impact of the vibration and impact of the wave maker itself on the pool side wall structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a cross-sectional view of the wall plate basic section in the first embodiment of the present application; Figure 2 is a cross-sectional view of the wall plate basic section in the second embodiment of the present application; Figure 3 is a structural numerical model schematic diagram of the wall plate basic section in the first embodiment of the present application; Figure 4 is a first-order modal cloud diagram of the wall plate basic section based on Abaqus software in the first embodiment of the present application; Figure 5is a second-order modal cloud chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 6 is a third-order modal cloud chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 7 is a fourth-order modal cloud chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 8 is a horizontal acceleration cloud chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 9 is a vertical acceleration cloud chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 10 is a horizontal acceleration time-history curve chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 11 is a vertical acceleration time-history curve chart of the wallboard basic section based on the Abaqus software in Embodiment One of the present application; Figure 12 is a design size schematic diagram of the wallboard basic section in Embodiment One of the present application.

[0021] Reference signs 100, test pool; 1, wallboard basic section; 11, basic bottom plate; 12, basic pile; 13, pool side wall; 131, inner wall surface; 132, outer wall surface; 14, damping cavity; 15, rib plate; 21, pre-buried connecting piece; 22, wave-making plate. DETAILED DESCRIPTION

[0022] The present application will be described in greater detail by way of specific embodiments, from which the skilled person will readily appreciate other advantages and embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied by other different specific embodiments, and the details in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by the skilled person without creative labor fall within the scope of protection of the present application.

[0023] It is to be understood that the embodiments described herein are illustrative of only a few of the many aspects and forms that such aspects can take in various embodiments. Based on the teachings herein one skilled in the art should appreciate that an aspect described herein can be implemented independently of any other aspects and that an aspect can be implemented both as any aspect described herein and as any combination of any aspects described herein. In addition, one skilled in the art will understand that any logic or functionality described herein can be implemented as software, hardware, or any combination of software and / or hardware.

[0024] It is also to be understood that the above-described embodiments are only illustrative of the application and that modifications can be made by those skilled in the art, without departing from the scope of the application. In addition, any one or more features of any aspects described herein can be implemented separately or in any combination with any one or more features of any other aspects described herein.

[0025] The embodiment of the present specification provides a large wave test tank, as shown in Figures 1 to 2 The embodiment of the present specification provides a large wave test tank, as shown in

[0026] The technical solutions provided by the embodiments of the present application are described below with reference to the drawings.

[0027] Embodiment one As shown in Figure 1 The embodiment of the present specification provides a large wave test tank 100, the main structure of the tank adopts a separate "U" type full-buried structure form, including an intermediate bottom plate and wall plate foundation sections 1 located on both sides of the intermediate bottom plate, the wall plate foundation sections 1 on both sides are L-shaped cast-in-place concrete pile foundation structures, the intermediate bottom plate adopts a structure form separated from the wall plate foundation sections 1, a contraction joint is arranged between the bottom plate edge and the toe of the pool wall of the wall plate foundation section 1, a stainless steel water stop belt is arranged in the joint, forming a U-shaped tank structure, a trailer is arranged at the top of the tank, since the longitudinal length of the tank in the present project is relatively long, a settlement joint is arranged along the longitudinal direction of the tank structure, and the sectional length is generally 20m. In this paper, one side wall plate foundation section 1 structure is analyzed, and the structure is 20m long. The overall structure is shown in the figure, and the pool wall is 7m high.

[0028] In this embodiment, the wall base section 1 includes a base floor 11 and a pool side wall 13, the inner wall surface 131 of the pool side wall 13 is configured as a continuous stepped surface with two groups of tread surfaces and kick surfaces, the inside of the pool side wall 13 corresponds to the position of each kick surface to form a substantially rectangular damping cavity 14, and the damping cavity 14 is configured to make the wall thickness of the pool side wall 13 substantially equal.

[0029] In this embodiment, by modifying the shape of the pool side wall and its attached structure, i.e., the wall base section 1, the resonance between the pool side wall and the wave is avoided without increasing the material of the existing pool structure, and the overall damping effect of the pool structure is achieved. Specifically, by opening a rectangular damping cavity in the inside of the pool side wall and configuring the inner and outer wall surfaces in a stepped manner, the resonance between the pool side wall and the wave is avoided while further reducing the use of structural materials. Through the finite element simulation analysis based on Abaqus software and the test below, the shape configuration of the pool wall described above can achieve the technical purpose and realize the overall damping effect of the pool structure.

[0030] For reference, taking the wall thickness of the pool wall as 0.6m, the overall structure is made of reinforced concrete pouring structure, and the elastic modulus of concrete is usually taken as 2.5-3.5×10 4 MPa, which can be simplified as a cantilever beam, the cross-sectional width of the cantilever beam can be taken as 1m, and the first-order natural frequency calculation formula of the cantilever beam is obtained. The natural frequency range of the pool wall (in the empty pool state) is 5-20Hz, which has a large overlap with the wave vibration energy frequency of 3-10.8Hz obtained by vibration analysis below, so there is a large resonance risk.

[0031] Next, numerical simulation is first performed using Abaqus software, and the structure size of the wall base section 1 is as shown in Figure 12 . Among them, the pool structure is simulated by C3D8R solid element, the material is C35 reinforced concrete, and the DCP elastoplasticity constitutive is used. In order to simplify the operation, the foundation pile 12 under the base floor 11 and the stratum soil are simplified as springs with stiffness of 6×109N / m and 2.5×107N / m respectively. The calculation model is as shown in Figure 3 , and after meshing, a total of 29680 units are obtained.

[0032] In order to understand the vibration characteristics of the wall base section 1 structure, modal analysis needs to be performed first. The vibration equation of the structure is as follows: Among them, are the mass, damping and stiffness matrices of the wall base section 1 structure, respectively; , , are the structural vibration acceleration, velocity and displacement vectors, respectively, represent the dynamic load acting on the structure, whose magnitude and direction vary with time, here the natural characteristics of the structure are solved, therefore can be taken as 0. The structural modal of the wall base section 1 is calculated by using Abaqus software, after discarding the rigid body mode, the frequency of the first 10 modes of the structure is shown in Table 1, which is mainly distributed in 14.48~44.63Hz.

[0033] Table 1 As Figures 4 to 7 shown, the first four modes of the wall base section 1 structure are shown, where U represents the displacement vector of each part of the wall base section 1, and Magnitude represents the modulus of the corresponding displacement vector of each part of the wall base section 1, which is a scalar to describe the deformation degree of the structure in modal analysis. According to the peak displacement vector and recording time of each part provided by the modal cloud chart, the natural angular frequency of the structure damping can be solved , and the above natural frequency is solved.

[0034] Then, vibration analysis is carried out, 40 wave plates are installed along the pool side, each wave plate is 0.5m wide, which is simplified as periodic load applied on the foundation to improve the calculation efficiency. After appropriate simplification, the horizontal load is about-11.6kN~13.7kN (positive in the wave direction), the vertical load is about-14.7kN~5.25kN (positive upward), the load period is 3s, and the lateral load is ignored. As Figure 3 shown, the expressions of horizontal (x direction) and vertical (y direction) loads are respectively: The numerical model is analyzed by using explicit dynamic solver. After the calculation is completed, the horizontal and vertical maximum acceleration cloud charts are shown in Figure 8 , Figure 9 , where A represents the acceleration of each part of the section structure, A1 represents the acceleration in the horizontal direction, and A2 represents the acceleration in the vertical direction. Among them, the maximum acceleration of the wall base section 1 is mainly located on the pool side wall 13, and the acceleration response of the bottom plate is relatively small.

[0035] As Figure 3As shown, three measuring points A, B and C are selected on the inner wall surface 131 of the structural pool side wall 13, the measuring point A is located on the top of the upper step of the inner wall surface 131, the measuring point B is located on the kick surface of the upper step of the inner wall surface 131, and the measuring point C is located on the tread surface of the lower step of the inner wall surface 131, i.e. the position of the wave making plate 22, and the acceleration time history curves are recorded respectively, and the results are as shown in the following table. Figures 10 to 11 As shown. Among them, the horizontal maximum accelerations of the points A, B and C at the beginning of the calculation are about 0.038 m / s 2 , 0.1 m / s 2 , 0.083 m / s 2 respectively, and the vertical maximum accelerations are 0.041 m / s 2 , 0.062 m / s 2 , 0.103 m / s 2 respectively. It can be seen that the acceleration is the largest below the wave making plate 22, which shows that the influence of the wave making machine on the pool structure cannot be ignored.

[0036] After Fourier transform, the frequency spectrum of the acceleration time history curve is calculated, and the vibration energy is mainly concentrated in 3-10.8 Hz, and according to the modal analysis in the foregoing, the modal frequency of the pool side wall 13 is distributed in 14.48-44.63 Hz. Compared with the modal analysis result in the foregoing, the main frequency of vibration does not coincide with the modal frequency, which shows that the vibration of the wave generated by the wave making machine will not cause resonance of the wall plate base section 1.

[0037] In this embodiment, a three-dimensional pool model is established by Abaqus software, the influence of the wave generated by the rocking plate wave making machine on the pool and the attached structure, i.e. the wall plate base section 1, is simulated and analyzed, modal analysis and three-dimensional numerical analysis are carried out, and the following conclusions are obtained: (1) The influence of the pool water and the soil layer is ignored in the modal analysis, and the first 10 modal frequencies of the wall plate base section 1 are mainly distributed in 14.48-44.63 Hz.

[0038] (2) Through dynamic analysis, under the condition that the periodic load is applied to the base, i.e. under the limit working condition of simulating wave making, the horizontal maximum acceleration of the wall plate base section 1 is 0.1 m / s 2 , the vertical maximum acceleration is 0.103 m / s 2 , and the vibration frequency is mainly 3-10.8 Hz.

[0039] The numerical simulation result shows that under the normal wave making working condition, although the influence of the wave generated by the wave making machine on the above wall plate base section 1 cannot be ignored, resonance phenomenon of the pool structure will not occur.

[0040] In addition, since the wall thickness of the wall plate base section 1 is substantially uniform, the size of the mold is reduced, the customized processing is reduced, and the turnover efficiency is improved when the pool side wall 13 is manufactured.

[0041] In the embodiment, the outer wall surface 132 of the pool side wall 13 is configured as a stepped surface with two groups of kick surfaces and one group of tread surfaces. The stepped shape of the outer wall surface 132 corresponds to the inner wall surface 131. The tread surface at the top of the step of the inner wall surface 131 is connected to the top kick surface of the outer wall surface 132. As shown in Figure 1 and Figure 3 Thus, the tread surfaces of the inner wall surface 131 and the corresponding tread surfaces of the outer wall surface 132 are longitudinally overlapped with each other, which improves the structural support strength of the front wall surface 131 and the lateral resistance of the outer wall surface 132.

[0042] In fact, the lateral resistance of the conventional single-sided pool wall depends on external support. In the embodiment, the pool side wall 13 has an extended structure in the inward and outward directions. Although the overall weight of the pool side wall 13 is reduced, the lateral resistance of the pool side wall 13 is further improved without relying on external support.

[0043] In the embodiment, as an implementation, as shown in Figure 1 、 Figures 3 to 9 The inner wall surface 131 has a lower step and an upper step connected to each other. The pool side wall 13 forms a group of damping cavities 14 at the position corresponding to the lower step. The pool side wall 13 forms another group of damping cavities 14 at the position corresponding to the upper step. The tread surface and the kick surface of the outer wall surface 132 corresponding to the lower step are supported by the rib plate 15. Here, at the position of the rib plate, the wall surface position and the corner position corresponding to the outer wall surface 132 are thickened.

[0044] Here, the bottom wall of the damping cavity 14 formed at the position corresponding to the upper step of the pool side wall 13 is downwardly provided with an angle groove. The bottom surface of the angle groove extends vertically downward to the inside of the damping cavity 14 corresponding to the lower step, so as to avoid the direct connection between the bottom wall of the damping cavity 14 formed at the position corresponding to the upper step of the pool side wall 13 and the top wall of the damping cavity 14 corresponding to the lower step.

[0045] Here, as shown in Figure 1As shown, the lower step corresponding damping cavity 14 and the upper step corresponding damping cavity 14 are at least partially overlapped in vertical direction. Through such design, it can ensure that the inner wall surface 131 of the pool can transmit the wave vibration to the inside of the pool wall through the damping cavity 14 when interacting with the wave generated by the wave generator, avoiding the vibration to be in hard contact with the local pool wall inside entity, thereby reducing the risk of local resonance, and further enhancing the overall damping effect of the pool on the wave flow.

[0046] In the embodiment, the test pool 100 further comprises a wave generator, which comprises a pre-buried connecting piece 21 and a wave plate 22. The finite element analysis has been used in the foregoing, and hereinafter, a specific introduction is made. The upper step corresponding damping cavity 14 serves as a wave generator control room and / or maintenance corridor. The pre-buried connecting piece 21 is connected to the tread surface of the lower step of the inner wall surface 131, and the wave plate is connected with the pre-buried connecting piece 21. Here, the wave plate is supported by a step surface, and the tread surface corresponding damping cavity 14 further reduces the vibration and impact transmitted to the pool side wall 13 by the wave plate itself.

[0047] Specifically, the wave plate is a swing plate, and the lower end of the swing plate is swingably connected with the pre-buried connecting piece 21 through a fixed rotating shaft. The swing plate type wave plate is installed on the tread surface of the lower step of the inner wall surface 131 of the pool side wall through the fixed shaft. Compared with the push plate wave plate, the swing plate type wave plate has almost unchanged center of gravity position, and generates small inertial force. Therefore, the vibration generated by the wave generator itself is relatively small. Moreover, the swing plate generates waves by swinging, and the inertial force can be transmitted through the bottom damping cavity 14 where the tread surface is located in vertical direction, and can be transmitted through the back damping cavity 14 where the kick surface is located in horizontal direction, thereby further reducing the influence of the vibration and impact generated by the wave generator itself on the pool side wall structure.

[0048] In the embodiment, the wall plate base section 1 on both sides and the intermediate bottom plate jointly define the main structure of the "U" type fully buried test pool 100. The side edges of the intermediate bottom plate and the front toes of the wall plate base section 1 are provided with a contraction joint, and a stainless steel water stop belt is arranged in the contraction joint to form a "U" type pool structure. Further, the contraction joint can adopt a rabbet joint.

[0049] Embodiment two The basic structure of the embodiment is the same as that of the first embodiment, and the difference between the two is that, here, the wave plate is a swing plate, and the lower end of the swing plate is swingably connected with the pre-buried connecting piece 21 through a fixed rotating shaft. The swing plate type wave plate is installed on the tread surface of the lower step of the inner wall surface 131 of the pool side wall through the fixed shaft. Compared with the push plate wave plate, the swing plate type wave plate has almost unchanged center of gravity position, and generates small inertial force. Therefore, the vibration generated by the wave generator itself is relatively small. Moreover, the swing plate generates waves by swinging, and the inertial force can be transmitted through the bottom damping cavity 14 where the tread surface is located in vertical direction, and can be transmitted through the back damping cavity 14 where the kick surface is located in horizontal direction, thereby further reducing the influence of the vibration and impact generated by the wave generator itself on the pool side wall structure. Figure 2As shown, the outer wall surface 132 of the pool side wall 13 is a vertical support surface, and the inner wall surface 131 has a lower step and an upper step connected thereto. The pool side wall 13 has two groups of damping cavities 14 arranged at intervals between the inner and outer wall surfaces at positions corresponding to the lower step, and has one group of damping cavities 14 at positions corresponding to the upper step. Finite element simulation analysis shows that the waves generated below the wave board 22 cause the greatest acceleration on the pool side wall 13. Therefore, in this embodiment, the positions of the rib supports in the above embodiment are further modified into one group of damping cavities 14 while maintaining the shape and structure of the inner wall surface 131 of the pool. This can improve the lateral force resistance and support capacity of the pool side wall, and enhance the damping performance of the pool wall below the wave board to prevent resonance between the pool wall and the waves.

[0050] In this embodiment, the kick surface of the outer wall surface 132 corresponding to the lower step coincides vertically with the kick surface of the inner wall surface 131 corresponding to the upper step, and the wall thicknesses of the pool walls corresponding to the two kick surfaces are equal. This ensures the uniformity of the pool wall position during concrete pouring, i.e., the integrity of the corresponding pool wall position, so that fatigue fracture is less likely to occur at the connection, thereby enhancing the load-bearing capacity.

[0051] In summary, in the above embodiments, the shape of the pool side wall and its attached structure, i.e., the wall plate base section 1, is modified to avoid resonance between the pool side wall and the waves without increasing the amount of material used in the existing pool structure, thereby improving the overall damping effect of the pool main structure on the simulated waves.

[0052] In this specification, the same or similar parts among the various embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and the relevant parts are referred to the part of the foregoing embodiments.

[0053] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application can be easily thought of by those skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A large wave test basin, characterized in that, The wall base section is an L-shaped cast-in-place concrete pile foundation structure, and specifically comprises a base bottom plate and a pool side wall. The inner wall surface of the pool side wall is configured as a continuous stepped surface with two groups of tread surfaces and kick surfaces.

2. Large wave test tank according to claim 1, characterized in that The outer wall surface of the pool side wall is configured as a stepped surface with two groups of kick surfaces and one group of tread surfaces.

3. The large wave test tank according to claim 2, characterized in that The inner wall surface has a lower step and an upper step connected to each other, and the pool side wall corresponds to a group of damping cavities at the position of the lower step and another group of damping cavities at the position of the upper step.

4. The large wave test tank according to claim 2, characterized in that The outer wall surface has a tread surface and a kick surface corresponding to the lower step.

5. A large wave test tank according to claim 4, characterized in that The outer wall surface is a vertical support surface, and the inner wall surface has a lower step and an upper step connected to each other.

6. A large wave test tank according to claim 3 or 4, characterized in that The outer wall surface has a tread surface and a kick surface corresponding to the lower step.

7. A large wave test tank according to claim 3 or 4, characterized in that The test pool further comprises a wave generator, which comprises a pre-embedded connecting piece and a wave plate.

8. The large wave test tank according to claim 6, characterized in that The lower step corresponding damping cavity and the upper step corresponding damping cavity at least partially overlap in the vertical direction.

9. The large wave test tank according to claim 1, characterized in that The wave plate is a swing plate, and the lower end of the swing plate is swingably connected to the pre-embedded connecting piece through a fixed rotating shaft.

10. The large wave test tank of claim 1, wherein, The wall base section and the intermediate bottom plate jointly define the main structure of the "U"-shaped fully-buried test pool. The side edges of the intermediate bottom plate and the front toes of the wall base section are provided with a shrinkage joint, and a stainless steel water stop belt is arranged in the shrinkage joint.

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