A vertical constant pressure load loading device suitable for wind power foundation model experiment and implementation method

Abstract

The application discloses a vertical constant pressure load loading device suitable for wind power foundation model experiment and an implementation method, and belongs to the technical field of wind power foundation model experiment. The vertical constant pressure load loading device comprises a model soil groove box body; model soil is filled in the model soil groove box body; an experimental model is arranged directly above the model soil; two vertical columns are arranged on the left side and the right side of the model soil groove box body; a support frame is arranged on the top of the four vertical columns; the loading tower barrel is vertically penetrated through the horizontal middle position of the support frame; the bottom of the loading tower barrel is connected with the experimental model; the top of the loading tower barrel is fixedly connected with the bottom of the tower barrel top cover plate; the bottom of the tower barrel top cover plate is connected with one wheel slide group on the front side and the rear side respectively; the two wheel slide groups are rotationally symmetrically distributed; each wheel slide group is connected with one weight combination through a steel wire rope. The vertical constant pressure load loading device is innovatively used with the wheel slide group, so that the loading precision and quality of the vertical load of the wind power foundation model experiment can be greatly improved, and the stability of the vertical load in the experimental process is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power foundation model experiment, in particular to a vertical constant pressure load loading device suitable for wind power foundation model experiment and an implementation method. BACKGROUND

[0002] At present, the load loading method adopted by most laboratories is as follows: in the experiment, first, a vertical (i.e. perpendicular) load is provided by a common hydraulic jack, and then horizontal and bending moment loads are provided by a horizontal hydraulic jack. In the static structure experiment, a common hydraulic jack is usually used for loading, and a roller, a pulley or a linear guide rail is used for moving between the jack and the vertical counterforce device. However, due to the influence of the horizontal load of the model and the vertical deformation of the test piece, these measures cannot guarantee the stability of the vertical load during the experiment, the vertical load is prone to fluctuation, and the amplitude of the vertical load is even more than 50% of the set value, which seriously affects the accuracy of the experimental results.

[0003] The main factors leading to the instability of the vertical load provided by the hydraulic jack in the static structure experiment include: first, the top elevation of the test piece will fluctuate when it is subjected to horizontal reciprocating displacement; second, the height of the test piece is reduced due to the vertical plastic deformation or damage; and third, the hydraulic system may have a small internal pressure leakage during the experiment, which affects the stability of the pressure of the jack.

[0004] For a scaled model experiment, even a small deviation will have a great influence on the stress state of the prototype structure, so it is necessary to eliminate and avoid experimental errors as much as possible.

[0005] Therefore, it is urgent to develop a technology to improve and optimize the conventional load loading device, independently control the vertical (i.e. perpendicular) load in the experiment, guarantee the stability of the vertical load during the experiment, and thus improve the experimental precision and quality. SUMMARY

[0006] The present application aims to solve the technical defects of the prior art and provides a vertical constant pressure load loading device suitable for wind power foundation model experiment and an implementation method.

[0007] To this end, the present application provides a vertical constant pressure load loading device suitable for wind power foundation model experiment, which comprises a top-opened and hollow model soil tank box body;

[0008] The inside of the model soil tank box body is filled with model soil.

[0009] An experimental model is arranged directly above the model soil.

[0010] Two vertical columns are symmetrically arranged on the left and right sides of the model soil tank box body;

[0011] The top of the four vertical columns is provided with a support frame;

[0012] A vertical loading tower is vertically arranged in the middle of the support frame;

[0013] The bottom of the loading tower is connected with the experimental model;

[0014] The top of the loading tower is fixedly connected with the bottom center of the horizontally arranged tower top cover plate;

[0015] The bottom of the tower top cover plate is connected with a pulley block on the front and rear sides;

[0016] The two pulley blocks are rotationally symmetrically arranged;

[0017] Each pulley block is connected with a weight combination through a steel wire rope;

[0018] The two weight combinations are arranged on the left and right sides of the model soil tank box body;

[0019] Each weight combination comprises a plurality of weights which are sequentially and spacedly arranged from top to bottom.

[0020] In addition, the application also provides an implementation method of the vertical constant pressure load loading device suitable for wind power foundation model experiment.

[0021] Step S1, preparing an experimental model: preparing an experimental model corresponding to a wind power foundation structure according to a preset scale ratio;

[0022] Step S2, model soil installation: filling the model soil in the model soil tank box body with an open top, and the top surface of the model soil is a plane;

[0023] Step S3, loading support device installation: fixedly connecting the four vertical columns and the support frame;

[0024] Step S4, experimental model and loading tower installation: arranging the experimental model and the loading tower in the support frame above the model soil, and anchoring the experimental model 1 and the loading tower;

[0025] Step S5, load loading device installation: arranging two pulley blocks, matched weight combinations and steel wire ropes on the two sides of the experimental model;

[0026] Step S6, vertical load application: adjusting the mass of the weight combination to adjust the size of the load applied to the experimental model, and finally providing the experimental model with a corresponding size of vertical constant pressure load.

[0027] From the above technical scheme provided by the present application, compared with the prior art, the present application provides a vertical constant pressure load loading device and implementation method suitable for wind power foundation model experiment, and the present application aims to solve the technical problem of unstable vertical load in the loading process of wind power foundation model experiment. The present application is designed scientifically, and innovatively uses a wheel sliding group, which is assembled quickly, conveniently, safely and reliably. The loading precision and quality of the vertical load of the wind power foundation model experiment can be greatly improved, the stability of the vertical load in the experiment process is ensured, and the experiment precision and quality are improved, which has great practical significance.

[0028] For the present application, a constant pressure loading structure is designed based on the wheel sliding group, so as to meet the purpose of constant vertical load, and improve the precision and quality of the model experiment.

[0029] The present application uses a wheel sliding group and a counterweight, effectively applies a vertical constant load, can significantly improve the precision and reliability of the static force experiment of the structure, and provides an efficient and stable loading means for indoor scale structure experiment. In addition, the device of the present application is easy to disassemble and reusable, which reduces the experimental cost and improves the utilization rate of resources. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A perspective structural diagram of a vertical constant pressure load loading device suitable for wind power foundation model experiment is provided for the present application Figure 1 ;

[0031] Figure 2 A front side structural diagram of a vertical constant pressure load loading device suitable for wind power foundation model experiment is provided for the present application Figure 1 , which omits drawing the pulley group located at the rear side and the matched steel wire rope;

[0032] Figure 3 A front side structural diagram of a vertical constant pressure load loading device suitable for wind power foundation model experiment is provided for the present application Figure 2 , which omits drawing the pulley group located at the front side and the matched steel wire rope;

[0033] Figure 4 A left side view of a vertical constant pressure load loading device suitable for wind power foundation model experiment is provided for the present application

[0034] Figure 5 A structural perspective view of a pulley group in a vertical constant pressure load loading device suitable for wind power foundation model experiment is provided for the present application

[0035] Figure 6 A perspective structural diagram of a vertical constant pressure load loading device suitable for wind power foundation model experiment is provided for the present application Figure 2;

[0036] In the figure, 1 is an experimental model (i.e. a test piece), 2 is a square steel column, 3 is a double-spliced channel steel, 4 is a wheel sliding group, 5 is a steel wire rope;

[0037] 6 is a weight, 7 is a model soil, 70 is a model soil groove box, 8 is a loading tower cylinder, 9 is an anchor bolt connecting section, and 10 is a tower cylinder top cover plate.

[0038] 3-2 is a front cross beam, 3-1 is a rear cross beam, 3-4 is a left support beam, and 3-3 is a right support beam. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some 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 scope of the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those of ordinary skill in the art, the specific meaning of the above terms in the present patent can be understood according to the specific circumstances.

[0042] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0043] Reference Figures 1 to 6The application provides a vertical constant pressure load loading device suitable for wind power foundation model experiment, which comprises a top-open hollow model soil groove box 70;

[0044] The inside of the model soil groove box 70 is filled with model soil 7.

[0045] An experimental model 1 (i.e. a test piece, namely a scaled model of a wind power foundation structure) is arranged above the model soil 7.

[0046] Two front-rear symmetrical vertical distribution stand columns 2 are arranged on the left and right sides of the model soil groove box 70.

[0047] Support frames 3 are arranged on the top of the four stand columns 2.

[0048] A vertical distribution loading tower cylinder 8 vertically penetrates through the transverse middle position of the support frame 3.

[0049] The bottom of the loading tower cylinder 8 is connected with the experimental model 1 (i.e. a test piece).

[0050] The top of the loading tower cylinder 8 is fixedly connected with the bottom center position of a horizontally distribution tower cylinder top cover plate 10.

[0051] The bottom front and rear sides of the tower cylinder top cover plate 10 are respectively connected with a wheel slide group 4.

[0052] Each wheel slide group 4 is connected with a weight combination through a steel wire rope 5.

[0053] Two weight combinations are respectively arranged on the left and right sides of the model soil groove box 70.

[0054] Each weight combination comprises a plurality of weights 6 which are sequentially and interval distributed from top to bottom.

[0055] In the application, the model soil groove box 70 is preferably a top-open square box body, which is mainly used for simulating soil in a laboratory.

[0056] The inside of the model soil groove box 70 is filled with the model soil 7, the top of which is a plane, which is used for simulating a soil foundation structure in a real wind power field and performing relevant experimental research, and the model soil can be used for simulating mechanical properties of soil, bearing characteristics of a foundation, etc., so that the interaction between soil and a foundation structure can be better understood.

[0057] In the application, the experimental model 1 is a scaled model of a wind power foundation structure, and the experiment mainly performs stress analysis on the experimental model 1 through loading, which is generally a steel or concrete circular expansion structure.

[0058] It should be noted that the experimental model 1 is a reduced scale model used for simulating and researching the foundation structure of a wind turbine generator set. The experimental model 1 is made by reducing the size of a real wind power foundation so as to be tested and researched in a laboratory or experimental site, wherein the scale ratio (i.e. the scale ratio between the model and the real object) of the experimental model 1 (i.e. the reduced scale model) is generally 1:10-1:100.

[0059] In the present application, the column 2 is a square steel column in specific implementation.

[0060] It should be noted that the column 2 is fixed on the ground of the laboratory by anchor bolts, and is mainly used for supporting the upper loading device, preferably a steel structure.

[0061] In the present application, the support frame 3 is a double-spliced channel steel structure in specific implementation.

[0062] It should be noted that the support frame 3 is connected to the top of the column 2 by welding, and is used for supporting the upper loading device, preferably a steel structure. The column 2 and the support frame 3 are the fixed structure of the constant pressure load loading device of the present application, which can provide good loading stability for the device.

[0063] In specific implementation, the support frame 3 includes left and right support beams 3-4 and 3-3 distributed longitudinally.

[0064] The left and right support beams 3-4 and 3-3 are symmetrically distributed left and right.

[0065] The top of the left and right support beams 3-4 and 3-3 is fixedly provided (e.g. welded) with front and rear cross beams 3-2 and 3-1 distributed transversely.

[0066] The front and rear cross beams 3-2 and 3-1 are symmetrically distributed front and rear.

[0067] There is a longitudinal gap between the front and rear cross beams 3-2 and 3-1.

[0068] The loading tower drum 8 vertically penetrates through the longitudinal gap.

[0069] In specific implementation, the top surfaces of the front and rear cross beams 3-2 and 3-1 are located on the same horizontal plane.

[0070] The top surfaces of the left and right support beams 3-4 and 3-3 are located on the same horizontal plane.

[0071] In the present application, the steel wire rope 5 sequentially passes through a plurality of fixed pulleys in the roller skate group 4, one end of the steel wire rope 5 is fixedly connected to the fixed buckle 4-1 in the roller skate group 4, and the other end is connected to a weight combination.

[0072] It should be noted that, for the present application, the steel wire rope 5 has two, respectively along the loading device rotationally symmetrically arranged, mainly for use in applying load.

[0073] In the present application, the two pulley blocks 4 are rotationally symmetrically distributed.

[0074] In the present application, the two pulley blocks 4 are parallel to each other.

[0075] In the present application, each pulley block 4 includes a first fixed pulley 4-2, a third fixed pulley 4-4, a fifth fixed pulley 4-6 and a seventh fixed pulley 4-8 mounted on the bottom of the tower head cover plate 10, and a second fixed pulley 4-3, a fourth fixed pulley 4-5, a sixth fixed pulley 4-7, an eighth fixed pulley 4-9 and a ninth fixed pulley 4-10 mounted on the front cross beam 3-2 or the rear cross beam 3-1.

[0076] The steel wire rope 5 passes through the first fixed pulley 4-2, the second fixed pulley 4-3, the third fixed pulley 4-4, the fourth fixed pulley 4-5, the fifth fixed pulley 4-6, the sixth fixed pulley 4-7, the seventh fixed pulley 4-8 and the eighth fixed pulley 4-9 in sequence.

[0077] One end of the steel wire rope 5 is fixedly connected to the fixed buckle 4-1, and the other end of the steel wire rope 5 is connected to a weight combination after passing through the ninth fixed pulley 4-10.

[0078] The fixed buckle 4-1 is fixed on the support frame 3 (specifically, on the front cross beam 3-2 or the rear cross beam 3-1) by screws.

[0079] The center points of the second fixed pulley 4-3, the fourth fixed pulley 4-5, the sixth fixed pulley 4-7, the eighth fixed pulley 4-9 and the ninth fixed pulley 4-10 are located on the same horizontal straight line.

[0080] The center points of the first fixed pulley 4-2, the third fixed pulley 4-4, the fifth fixed pulley 4-6 and the seventh fixed pulley 4-8 are located on the same horizontal straight line.

[0081] The ninth fixed pulley 4-10 is arranged at the right end of the front cross beam 3-2 or the left end of the rear cross beam 3-1.

[0082] The first fixed pulley 4-2, the second fixed pulley 4-3, the third fixed pulley 4-4, the fourth fixed pulley 4-5, the fifth fixed pulley 4-6, the sixth fixed pulley 4-7, the seventh fixed pulley 4-8, the eighth fixed pulley 4-9 and the ninth fixed pulley 4-10 are located on the same vertical plane.

[0083] The second fixed pulley 4-3 is located directly below the middle position of the gap between the first fixed pulley 4-2 and the third fixed pulley 4-4.

[0084] The fourth fixed pulley 4-5 is located directly below the middle of the gap between the third fixed pulley 4-4 and the fifth fixed pulley 4-6;

[0085] The sixth fixed pulley 4-7 is located directly below the middle of the gap between the fifth fixed pulley 4-6 and the seventh fixed pulley 4-8;

[0086] In this configuration, for each of the upper fixed pulleys, the wire ropes between it and the adjacent lower fixed pulley are vertically distributed.

[0087] It should be noted that the two pulley blocks 4 have the same shape and structure, only their distribution direction is different.

[0088] It should be noted that, in this invention, two steel wire ropes 5 are respectively connected to the bottom of the tower top cover plate 10 to apply a vertical load (i.e., vertical load), thereby applying twice the vertical load to the experimental model 1 (i.e., the scaled-down model) connected to the tower top cover plate 10.

[0089] See Figure 1 As shown, when each weight combination includes four weights 6 arranged at intervals from top to bottom, the device of the present invention can apply a stable and reliable vertical load (i.e., 8P1) to the experimental model 1.

[0090] It should be noted that the weight of a single weight 6 is G1, then P1 = N * G1, where N is the number of weights located on one side. Figure 1 N is 4; where P1 represents multiple weights located on one side. Figure 1 The total pulling force provided by weight 6 (shown as 4 weights) is as follows;

[0091] Because a pulley system 4 located on one side, through its eight fixed pulleys (specifically, the first fixed pulley 4-2, the third fixed pulley 4-4, the fifth fixed pulley 4-6, the seventh fixed pulley 4-8, the second fixed pulley 4-3, the fourth fixed pulley 4-5, the sixth fixed pulley 4-7, and the eighth fixed pulley 4-9), can apply a load of 8P1 to the top of experimental model 1, that is, the single-side load of experimental model 1 is 8P1. Therefore, the scaled-down model (i.e., experimental model 1) with pulley systems on both sides can apply a total vertical load of 16P1. This invention can ensure the constant application of the vertical load while meeting the vertical load requirements of the experiment.

[0092] In specific implementation, since the vertical load on the scaled model (i.e., experimental model 1) is equal to 16P1, then, for the needs of the experiment, after determining the size of the vertical load to be applied to experimental model 1, the total tension P1 of the weights on one side can be further determined. Since P1 = N*G1, the number N of weights that need to be suspended in one side of the device of the present invention can be determined.

[0093] It should be noted that the ninth fixed pulley 4-10 is a load turning connecting section between the pulley set 4 and the weight combination. For the present application, the load transfer direction can be changed and the load can be superimposed by the connecting mode between different pulleys. The load in the pulley set 4 can be transferred through multiple pulleys, so that the required applied force is superimposed at the scale model, which can greatly improve the accuracy and reliability of the experiment.

[0094] In a specific implementation, the steel wire rope 5 is generally a stainless steel wire rope with 7×7 strands, a diameter of 3-6 mm, and a length of 2-5 m.

[0095] In the present application, in a specific implementation, the weights of the two weight combinations are equal, and the two weight combinations are rotationally symmetrically distributed.

[0096] It should be noted that for the present application, the weight 6 is a component with hooks mounted at the center positions of the top and bottom, mainly for applying vertical load in the loading device. The weight 6 can be customized according to experimental requirements, and hooks for connection are needed at the top and bottom of the weight.

[0097] In the present application, in a specific implementation, the bottom of the loading tower 8 is fixedly connected with the top of the experimental model 1 (i.e. the test piece) through the anchor connecting section 9.

[0098] The anchor connecting section 9 includes an upper anchor plate and a lower anchor plate.

[0099] The circular upper anchor plate is fixedly arranged at the bottom of the loading tower 8 (which can be integrally formed or fixedly welded);

[0100] The circular lower anchor plate is fixedly arranged at the top center position of the experimental model 1 (which can be integrally formed or fixedly welded);

[0101] The upper anchor plate and the lower anchor plate are fixedly connected by a plurality of anchors.

[0102] In a specific implementation, a plurality of first through holes are distributed at equal intervals along the circumference on the upper anchor plate;

[0103] The lower anchor plate is provided with a second through hole at a position corresponding to each first through hole;

[0104] Each anchor vertically penetrates through the first through hole and the second through hole on the lower anchor plate in sequence from top to bottom, and the part protruding from the upper end of the anchor to the upper anchor plate is threadedly fixedly connected with a pair of first nuts (such as steel nuts), and the part protruding from the lower end of the anchor to the lower anchor plate is threadedly fixedly connected with a pair of second nuts (such as steel nuts).

[0105] It should be noted that for the present application, the anchor connecting section 9, as a connecting structure connecting the experimental model 1 and the loading tower 8, is preferably a steel structure.

[0106] For the present application, the loading tower 8 is a structure used for applying external load in the wind power foundation model experiment, and the loading end of the load in the experiment is connected with the experimental model 1 through the anchor connecting section 9, and the loading tower 8 is preferably a steel structure.

[0107] The loading tower 8 is generally designed according to the size of the tower of the actual wind turbine, and mainly applies vertical load and horizontal load at the loading tower to make the foundation bear the scaled vertical load, horizontal load and bending moment load.

[0108] In the present application, the top cover plate 10 of the tower is rectangular in shape, and is a steel cover plate with a length of 0.2-0.5 m, a width of 0.2-0.4 m and a thickness of 2-5 mm. According to the experimental load requirements, mounting holes for pulley blocks are reserved on the top cover plate 10 of the tower, which mainly serve as the structure connecting the loading tower 8 and the pulley block 4.

[0109] Based on the vertical constant pressure load loading device for the wind power foundation model experiment provided in the present application, the present application further provides an experimental implementation method of the vertical constant pressure load loading device for the wind power foundation model experiment, which comprises the following steps:

[0110] Step S1, making the experimental model 1: preparing the experimental model 1 corresponding to the wind power foundation structure according to the preset scale ratio;

[0111] Firstly, according to the experimental design requirements, the scale ratio of the experimental model 1 (i.e. the scaled model) is selected to be 1:10-1:100 through the calculation of the scale ratio of the wind power foundation prototype design drawing;

[0112] Secondly, the basic size of the experimental model 1 is determined, and the size drawing of the experimental model 1 is completed.

[0113] Finally, the experimental model 1 is processed, and the experimental model material is not limited to steel or concrete material, and the specific experimental material can be selected according to the specific experimental scheme requirements.

[0114] Step S2, model soil 7 installation: the model soil 7 is filled in the inside of the top-opened model soil tank box 70, and the top surface of the model soil 7 is a leveled plane;

[0115] It should be noted that, according to the size of the experimental model 1, the model soil tank box 70 of the corresponding size is selected and fixedly installed on the laboratory ground through bolting or welding, and after being installed stably, the soil body is backfilled layer by layer according to the experimental design requirements.

[0116] Step S3, loading support device installation: the four columns 2 and the support frame 3 are fixedly connected to form a basic support frame;

[0117] It should be noted that, in specific implementation, the stand 2 and the support frame 3 are made according to the experimental scheme requirements and combined with the on-site conditions of the laboratory. In the installation process, the stand 2 is first fixed to the laboratory ground by bolting or welding, and then the stand 2 and the support frame 3 are connected as a whole by welding to ensure stability during the experimental loading process.

[0118] Step S4, installation of the experimental model 1 and the loading tower 8: the loading tower 8 is arranged above the model soil 7 according to the experimental model 1 and the support frame 3,

[0119] 3, and the experimental model 1 is anchored and connected with the loading tower 8;

[0120] First, the experimental model 1 is placed on the model soil 7 in the model soil tank box 70;

[0121] Then, the experimental model 1 is anchored and connected with the loading tower 8 through the anchor bolt connection section 9 to ensure the stability of the connection between the experimental model 1 and the loading tower 8.

[0122] Step S5, installation of the load loading device: two pulley blocks and matching weight combinations and steel wires 5 are arranged on both sides of the experimental model 1;

[0123] In specific implementation, the vertical load borne by the model is determined according to the scale ratio, and the number of fixed pulleys in the pulley block 4 is determined. The steel wire 5 is used to connect the pulley block 4, and the vertical constant pressure loading system of the pulley block is arranged on both sides of the experimental model 1 in a rotational symmetry system to prevent bias during the experiment.

[0124] For step S5, in the installation process, first, the fixed buckle and the fixed pulley are installed at the corresponding position according to the experimental design requirements. Then, one end of the steel wire 5 is fixed to the fixed buckle 4-1; then, the steel wire 5 is passed through each fixed pulley along the pulley block; finally, according to the vertical load requirement of the model experiment, a plurality of (for example, four) weights 6 are hung at the other end of the steel wire 5.

[0125] Step S6, vertical load application: the size of the load applied to the experimental model 1 is adjusted by adjusting the mass of the weight combination, and finally a vertical constant pressure load of a corresponding size is provided to the experimental model 1.

[0126] In specific implementation, according to the calculated load, a corresponding number of weights 6 are added to adjust the mass of the weight combination. When the total tension of the weights on one side is P1 (specifically equal to 4G1, G1 is the weight of a single weight, and 4 is the number of weights on one side), one pulley block 4 on one side can exert a load of 8P1 on the top of the model, and the two pulley blocks together can exert a load of 16P1, which meets the required vertical load of the experiment and ensures the constancy of the applied vertical load.

[0127] It should be noted that the constant pressure load loading device provided by the application can be applied to the experiment of the experimental model 1 which is the circular expansion foundation structure model, and the experimental model 1 can also be other types of wind power foundation structure models. The technical scheme of the application is also applicable to the remaining types of wind power foundation structure model experiments.

[0128] The above only describes the preferred embodiments of the application. It should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the application, and these improvements and refinements should also be considered within the protection scope of the application.

Claims

1. A vertical constant pressure load loading device suitable for wind power foundation model experiment, characterized in that, The model soil tank box (70) includes a hollow model soil tank box (70) with a top opening; The model soil tank box (70) is filled with model soil (7) inside; An experimental model (1) is arranged above the model soil (7); Two vertical columns (2) are arranged on the left and right sides of the model soil tank box (70); Four vertical columns (2) are arranged on the top of the support frame (3); A vertical loading tower (8) is vertically arranged through the horizontal middle position of the support frame (3); The bottom of the loading tower (8) is connected with the experimental model (1); The top of the loading tower (8) is fixedly connected with the bottom center of the horizontally arranged tower top cover plate (10); The bottom of the tower top cover plate (10) is connected with a pulley block (4) on the front and rear sides; The two pulley blocks (4) are rotationally symmetrically distributed; Each pulley block (4) is connected with a weight combination through a steel wire rope (5); Two weight combinations are arranged on the left and right sides of the model soil tank box (70); Each weight combination includes a plurality of weights (6) arranged in a vertical direction; The support frame (3) includes a left support beam (3-4) and a right support beam (3-3) arranged in a vertical direction; The left support beam (3-4) and the right support beam (3-3) are symmetrically arranged on the left and right sides; The top of the left support beam (3-4) and the right support beam (3-3) is fixedly provided with a front cross beam (3-2) and a rear cross beam (3-1) arranged in a horizontal direction; The front cross beam (3-2) and the rear cross beam (3-1) are symmetrically arranged in a front-rear direction; The front cross beam (3-2) and the rear cross beam (3-1) have a vertical gap therebetween; The loading tower (8) vertically penetrates through the vertical gap; Each pulley block (4) includes a first fixed pulley (4-2), a third fixed pulley (4-4), a fifth fixed pulley (4-6), and a seventh fixed pulley (4-8) mounted on the bottom of the tower top cover plate (10), and a second fixed pulley (4-3), a fourth fixed pulley (4-5), a sixth fixed pulley (4-7), an eighth fixed pulley (4-9), and a ninth fixed pulley (4-10) mounted on the front cross beam (3-2) or the rear cross beam (3-1); The steel wire rope (5) sequentially passes through the first fixed pulley (4-2), the second fixed pulley (4-3), the third fixed pulley (4-4), the fourth fixed pulley (4-5), the fifth fixed pulley (4-6), the sixth fixed pulley (4-7), the seventh fixed pulley (4-8), and the eighth fixed pulley (4-9); One end of the steel wire rope (5) is fixedly connected with a fixed buckle (4-1), and the other end of the steel wire rope (5) is connected with a weight combination after passing through the ninth fixed pulley (4-10); The fixed buckle (4-1) is fixed on the support frame (3) by a screw. 2.The vertical constant pressure load loading device suitable for wind power foundation model experiment of claim 1, wherein, The model soil tank box (70) is a square box with an upper opening. 3.The vertical constant pressure load loading device suitable for wind power foundation model experiment of claim 1, wherein, The top surfaces of the front cross beam (3-2) and the rear cross beam (3-1) are located on the same horizontal plane; The top surfaces of the left support beam (3-4) and the right support beam (3-3) are located on the same horizontal plane. 4.The vertical constant pressure load loading device suitable for wind power foundation model experiment of claim 1, wherein, The two pulley blocks (4) are parallel to each other. 5.The vertical constant pressure load loading device suitable for wind power foundation model experiment of claim 1, wherein, The center points of the second fixed pulley (4-3), the fourth fixed pulley (4-5), the sixth fixed pulley (4-7), the eighth fixed pulley (4-9) and the ninth fixed pulley (4-10) are located on the same horizontal straight line; The center points of the first fixed pulley (4-2), the third fixed pulley (4-4), the fifth fixed pulley (4-6) and the seventh fixed pulley (4-8) are located on the same horizontal straight line; The ninth fixed pulley (4-10) is arranged at the right end of the front cross beam (3-2) or the left end of the rear cross beam (3-1); The first fixed pulley (4-2), the second fixed pulley (4-3), the third fixed pulley (4-4), the fourth fixed pulley (4-5), the fifth fixed pulley (4-6), the sixth fixed pulley (4-7), the seventh fixed pulley (4-8) and the eighth fixed pulley (4-9) and the ninth fixed pulley (4-10) are located on the same vertical plane; The second fixed pulley (4-3) is located directly below the middle position of the gap between the first fixed pulley (4-2) and the third fixed pulley (4-4); The fourth fixed pulley (4-5) is located directly below the middle position of the gap between the third fixed pulley (4-4) and the fifth fixed pulley (4-6); The sixth fixed pulley (4-7) is located directly below the middle position of the gap between the fifth fixed pulley (4-6) and the seventh fixed pulley (4-8); Among them, for each fixed pulley located above, the steel wire rope between it and the adjacent fixed pulley located below is vertically distributed. 6.The vertical constant pressure load loading device suitable for wind power foundation model experiment of claim 1, wherein, The two weight combinations are equal in weight, and the two weight combinations are rotationally symmetrically distributed. 7.The vertical constant pressure load loading device suitable for wind power foundation model experiment of claim 1, wherein, The bottom of the loading tower cylinder (8) is fixedly connected with the top of the experimental model (1) through the anchor connecting section (9); The anchor connecting section (9) comprises an upper anchor plate and a lower anchor plate; The circular upper anchor plate is fixedly arranged at the bottom of the loading tower cylinder (8); The circular lower anchor plate is fixedly arranged at the top center position of the experimental model (1); The upper anchor plate and the lower anchor plate are fixedly connected through a plurality of anchors; Among them, a plurality of first through holes are distributed equidistantly along the circumference on the upper anchor plate; The lower anchor plate is provided with a second through hole at a position corresponding to each first through hole; Each anchor vertically penetrates through the first through hole and the second through hole on the lower anchor plate in turn from top to bottom, and the part protruding from the upper anchor plate at the upper end is threadedly fixedly connected with a pair of first nuts, and the part protruding from the lower anchor plate at the lower end is threadedly fixedly connected with a pair of second nuts.

8. A method for implementing the vertical constant pressure load loading device for wind power foundation model experiment according to any one of claims 1 to 7, characterized in that, The steps include: Step S1, manufacturing an experimental model (1): preparing an experimental model (1) corresponding to a wind power foundation structure according to a predetermined scale ratio; Step S2, model soil (7) installation: the inside of the model soil tank box (70) with an open top is filled with model soil (7), and the top surface of the model soil (7) is a plane; Step S3, loading support device installation: four columns (2) and a support frame (3) are fixedly connected; Step S4, experimental model (1) and loading tower cylinder (8) installation: the experimental model (1) is installed above the model soil (7), the loading tower cylinder (8) is arranged in the support frame (3), and the experimental model (1) and the loading tower cylinder (8) are connected by anchors; Step S5, load loading device installation: two pulley blocks and the matching weight combination and steel wire rope (5) are arranged on both sides of the experimental model (1); Step S6, vertical load application: the size of the load applied to the experimental model (1) is adjusted by adjusting the mass of the weight combination, and finally the experimental model (1) is provided with a corresponding size of vertical constant pressure load.

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