Multi-degree-of-freedom and multifunctional intelligent test platform for researching ocean engineering foundation

Abstract

The invention relates to a multi-degree-of-freedom and multifunctional intelligent test platform for researching an ocean engineering foundation. The multi-degree-of-freedom and multifunctional intelligent test platform comprises a base; the model box is placed on the base, and the gate-type counter-force frame is installed on the base and has the degree of freedom in the Y direction; the first actuation loading assembly is movably arranged on the gate-type reaction frame and has degrees of freedom in the Z direction and the X direction; the loading mechanism is mounted on the gate-type reaction frame and comprises a loading frame assembly with a degree of freedom in the Z direction, a second actuation loading unit fixed on the loading frame assembly and a third actuation loading unit which is arranged on the loading frame assembly and has a degree of freedom in the X direction; and the consolidation pressing plate is configured to be detachably connected with the first actuation loading assembly, and is used for pressurizing and consolidating the soil sample in the model box. Compared with the prior art, the problem that the ocean engineering foundation cannot be well subjected to refined research due to lack of a high-quality test platform at present can be solved.

Description

Technical Field

[0001] The present invention belongs to the field of marine engineering technology and relates to a multi-degree-of-freedom, multi-functional intelligent test platform for studying the foundation of marine engineering. Background Art

[0002] Among all renewable energy sources, solar energy, hydropower and onshore wind power are limited by geographical and environmental factors. After a short period of large-scale construction, it is difficult to further expand their scale. In contrast, due to the high wind speed, low wind shear and low turbulence in the marine environment, offshore wind power has the advantages of large reserves, low environmental noise pollution and no occupation of arable land resources, and is favored by countries around the world. Under the background of energy transformation and "carbon neutrality", global offshore wind power has developed rapidly, and as near-shore resources are exhausted, the development of offshore wind power will inevitably move to the deep sea.

[0003] Depending on the water depth and seabed conditions, offshore wind turbine foundation types include fixed gravity foundation, single pile foundation, suction bucket foundation, jacket foundation and floating wind turbine anchor foundation. Compared with onshore wind power, the offshore construction environment is harsh, and offshore wind turbines have large capacity, high hubs, long blades, and wind, wave and flow loads are much greater than onshore wind power. The cost of offshore wind power is much higher than that of land wind power. In the total investment of offshore wind power, the cost of wind turbine foundation can reach more than 30%.

[0004] Therefore, in order to conduct detailed research and analysis on the foundations of such marine engineering projects and reduce foundation costs, it is of great significance to develop a multi-degree-of-freedom, multi-functional, and intelligent test platform based on domestic and foreign research, carry out high-quality model tests, and conduct in-depth research on the above-mentioned issues.

[0005] For example, the loading device and loading method for geotechnical engineering model test disclosed in Chinese patent ZL201710436101.7, the loading device includes a static loading mechanism, the static loading mechanism includes a ground anchor, two reaction frame columns, two force sensors, a reaction frame beam, two loading bolts, a reaction plate, at least two loading springs and a pressure plate; the two reaction frame columns are fixed to the ground anchor with column anchor bolts; the two force sensors are respectively connected to the middle section of a reaction frame column; the reaction frame beam spans between the two reaction frame columns and is locked from top to bottom with loading bolts; the reaction plate is arranged below the reaction frame beam and fixedly connected to the pressure plate by the loading spring. This patent can only load in the vertical direction, and cannot provide loading conditions in the horizontal direction. It has a relatively simple function and is inconvenient to use. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations, so as to solve the problem that there is currently a lack of high-quality test platforms and the inability to conduct detailed research on marine engineering foundations.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A multi-degree-of-freedom, multi-functional intelligent test platform for studying the foundations of marine engineering, including:

[0009] Base;

[0010] A model box is placed on the base,

[0011] A portal reaction frame mounted on the base and having a degree of freedom in the Y direction;

[0012] a first actuating loading assembly movably disposed on the portal reaction frame and having degrees of freedom along the Z direction and the X direction, wherein the first actuating loading assembly is configured to output a load along the Z direction to the loaded object;

[0013] A loading mechanism installed on the gantry reaction frame, comprising a loading frame assembly having a degree of freedom along the Z direction, a second actuation loading unit fixed to the loading frame assembly, and a third actuation loading unit provided on the loading frame assembly and having a degree of freedom along the X direction, wherein the second actuation loading unit is configured to output a load along the X direction, and the third actuation loading unit is configured to output a load along the Y direction;

[0014] and a consolidation plate, which is configured to be detachably connected to the first actuation loading assembly and to pressurize and consolidate the soil sample in the model box.

[0015] Furthermore, the intelligent testing platform also includes a data acquisition and control module, which is configured to collect and receive test data during the loading test, and send an execution signal to the operating parts including the first actuation loading component, the second actuation loading unit, and the third actuation loading unit according to the experimental data.

[0016] Furthermore, the data acquisition and control module includes three parts: an integrated control cabinet, a data acquisition instrument and a control system.

[0017] The integrated control cabinet is used to receive real-time signals of operating components including the first actuation loading component, the second actuation loading unit, the third actuation loading unit, and each drive motor, and feed them back to the control system.

[0018] The data acquisition instrument is used to collect displacement signals and loading force signals of the operating components including the first actuation loading component, the second actuation loading unit, and the third actuation loading unit, and feed them back to the control system.

[0019] The control system is configured to receive real-time signals from the integrated control cabinet and the data acquisition instrument, and send execution signals to the operating components.

[0020] Furthermore, the portal reaction frame includes a reaction frame column which is arranged on the base and can move back and forth along the Y direction, and a reaction frame fixed beam connected to the reaction frame column.

[0021] Furthermore, the first actuation loading assembly includes a reaction frame moving beam arranged on the gantry reaction frame and capable of rising and falling along the Z direction, a moving beam slider arranged on the reaction frame moving beam and capable of moving back and forth along the X direction, and a first servo actuator installed on the moving beam slider, wherein the first servo actuator is used to output a loading load along the Z direction.

[0022] Furthermore, the output end of the first servo actuator is also connected to the first horizontal steering assembly, the first prestressed ring, the first force sensor and the first conversion flange in sequence, and is in contact or connected with the loaded object through the first conversion flange to achieve load loading.

[0023] Furthermore, the side wall of the reaction frame column is also provided with a movable beam lifting guide rail along the Z direction and cooperating with the movable beam of the reaction frame, and the portal reaction frame is also provided with a first driving component for driving the movable beam of the reaction frame to move along the movable beam lifting guide rail;

[0024] The reaction frame moving beam is also provided with a moving beam slide rail which is slidably matched with the moving beam slider and along the X direction, and a second driving component used for driving the moving beam slider to move back and forth along the moving beam slide rail.

[0025] Furthermore, the loading frame assembly includes a first loading frame beam arranged on the portal reaction frame and capable of being raised and lowered in the Z direction, a second loading frame beam arranged on the first loading frame beam and capable of being moved back and forth in the X direction, a second actuating loading unit is arranged on the first loading frame beam, and the third actuating loading unit is arranged on the second loading frame beam.

[0026] Furthermore, the gantry reaction frame is further provided with a loading frame lifting rail along the Z direction and slidably matched with the first loading frame crossbeam, and a third driving assembly for driving the first loading frame crossbeam to move along the loading frame lifting rail;

[0027] A loading frame fixing plate along the X direction is installed on the first loading frame crossbeam, a second crossbeam slider that can move back and forth along the loading frame fixing plate is installed on the loading frame fixing plate, and the second loading frame crossbeam is arranged on the second crossbeam slider.

[0028] Further, the second actuation loading unit includes a second servo actuator, and a second horizontal steering assembly, a second prestressed ring, a second force sensor and a second conversion flange which are sequentially connected to the second servo actuator;

[0029] The third actuation loading unit includes a third servo actuator, and a third horizontal steering assembly, a third prestressed ring, a third force sensor and a third conversion flange which are sequentially connected to the third servo actuator;

[0030] The second conversion flange and the third conversion flange are configured to contact or connect with the loaded object to achieve load loading.

[0031] Furthermore, the loaded object is a single pile, a pile group, a pile shoe, a suction bucket or a shared anchor.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] (1) Model tests can be carried out on various marine engineering foundations such as pile shoes, single piles, pile groups, pile shoes, suction buckets, shared anchors, etc., to solve the problem of the lack of high-quality test platforms and the inability to conduct detailed research on marine engineering foundations.

[0034] (2) Different soil bed types (including but not limited to clay, dry sand, saturated sand, etc.), different relative densities and different consolidation degrees can be selected during the test process, so as to study the model test of marine engineering foundation under different soil conditions.

[0035] (3) It has multiple degrees of freedom. The gantry reaction frame, C-type loading frame and multiple servo actuators all have multiple degrees of freedom, making the loading method more flexible.

[0036] (4) It has multifunctional characteristics and can carry out in-situ tests such as CPTu and T-bar, as well as model tests of the penetration process, in-situ bearing and pull-out process of various marine engineering foundations such as single piles, pile groups, pile shoes, suction buckets, and shared anchors. The loading objects include but are not limited to the above-mentioned foundation types.

[0037] (5) It has intelligent features, equipped with an integrated control cabinet and a control computer. The position of the gantry reaction frame, C-type loading frame and servo actuator can be adjusted to adapt to the pile position through software settings, and the adjustment method is more accurate and convenient. During the test, the servo actuator is accurately controlled and loaded through the integrated control cabinet and control computer. All data during the test preparation and test process can be recorded through various sensors to obtain more complete test data.

[0038] (6) The loading mode can be selected as displacement control or force control, which can simulate different loading conditions and make the test analysis more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A front view of the test device provided in Example 1 of the present invention;

[0040] Figure 2 A side view of the test device provided in Example 1 of the present invention;

[0041] Figure 3 A front view of a consolidation pressing plate provided in Example 1 of the present invention;

[0042] Figure 4 A side view of a consolidation plate provided in Example 1 of the present invention;

[0043] Figure 5 A front view of an integrated control cabinet provided in Embodiment 1 of the present invention;

[0044] Figure 6 A front view of a data acquisition device provided in Example 1 of the present invention;

[0045] Figure 7 A front view of a control computer provided in Example 1 of the present invention;

[0046] Description of the markings in the figure:

[0047] 1. Model box; 2. Water inlet and outlet; 3. Base; 4-1. Counter-force frame column; 4-2. Loading frame lifting lower limit; 4-3. Loading frame lifting slide rail; 4-4. Loading frame lifting screw rod; 4-5. Loading frame lifting upper limit; 4-6. Loading frame lifting drive motor; 4-7. First drive motor; 4-8. Counter-force frame fixed beam; 4-9. Mobile beam lifting upper limit; 4-10. Mobile beam lifting guide rail; 4-11. Mobile beam lifting lower limit; 5-1. Counter-force frame mobile beam; 5-2. Mobile beam locking mechanism; 5-3. Second drive motor; 5-4. Mobile beam left limit; 5-5. Mobile beam slide rail; 5-6. Mobile beam slider; 5-7. Mobile beam driving flange; 5-8. Mobile beam screw rod; 5-9. Mobile beam right limit; 6-1. First loading Frame beam; 6-2, first beam slider; 6-3, second loading frame beam; 6-4, third loading frame beam; 6-5, loading frame fixing plate; 6-6, second beam slider; 7-1, first servo actuator; 7-2, first horizontal steering assembly; 7-3, first prestressed ring; 7-4, first force sensor; 7-5, first conversion flange; 8-1, second servo actuator; 8-2, second horizontal steering assembly; 8-3, second prestressed ring; 8-4, second force sensor; 8-5, second conversion flange; 9-1, third servo actuator; 9-2, third horizontal steering assembly; 9-3, third prestressed ring; 9-4, third force sensor; 9-5, third conversion flange; 10, integrated control cabinet; 11, data acquisition instrument; 12, control system; 13, consolidation pressure plate. DETAILED DESCRIPTION

[0048] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0049] In the following implementation manners or examples, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0050] In order to solve the problem that there is a lack of high-quality test platforms and it is not possible to conduct fine research on marine engineering foundations, the present invention provides a multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations. Figures 1 to 7 As shown, including:

[0051] Base 3;

[0052] The model box 1 is placed on the base 3,

[0053] A portal reaction frame installed on the base 3 and having a degree of freedom along the Y direction;

[0054] a first actuating loading assembly movably disposed on the portal reaction frame and having degrees of freedom along the Z direction and the X direction, wherein the first actuating loading assembly is configured to output a load along the Z direction to the loaded object;

[0055] A loading mechanism installed on the gantry reaction frame, comprising a loading frame assembly having a degree of freedom along the Z direction, a second actuation loading unit fixed to the loading frame assembly, and a third actuation loading unit provided on the loading frame assembly and having a degree of freedom along the X direction, wherein the second actuation loading unit is configured to output a load along the X direction, and the third actuation loading unit is configured to output a load along the Y direction;

[0056] And a consolidation plate 13 is configured to be detachably connected to the first actuation loading assembly and to pressurize and consolidate the soil sample in the model box 1.

[0057] In some specific embodiments, the intelligent testing platform also includes a data acquisition and control module, which is configured to collect and receive test data during the loading test, and send an execution signal to the operating parts including the first actuation loading component, the second actuation loading unit, and the third actuation loading unit based on the experimental data.

[0058] In some specific embodiments, the portal reaction frame includes a reaction frame column 4-1 disposed on the base 3 and movable back and forth along the Y direction, and a reaction frame fixed crossbeam 4-8 connected to the reaction frame column 4-1. In addition, a slide rail for the reaction frame column 4-1 to move can be disposed on the base 3, and a column moving member matching the slide rail can be disposed at the bottom of the reaction frame column 4-1, such as a column roller, so as to achieve back and forth movement along a specific direction on the base 3. A column locking mechanism for locking the freedom of movement of the column moving member can also be disposed on the column moving member, so as to achieve position locking after adjustment. This part of the column moving member, the column locking mechanism, etc. are all conventional structures in the field and will not be described in detail here.

[0059] In some specific embodiments, the first actuation loading assembly includes a reaction frame moving beam 5-1 disposed on the gantry reaction frame and capable of being raised and lowered in the Z direction, a moving beam slider 5-6 disposed on the reaction frame moving beam 5-1 and capable of being moved back and forth in the X direction, and a first servo actuator 7-1 installed on the moving beam slider 5-6, wherein the first servo actuator 7-1 is used to output a loading load in the Z direction. In order to limit the lifting and lowering stroke of the reaction frame moving beam 5-1, a corresponding moving beam lifting upper limit 4-9 and moving beam lifting lower limit 4-11 are also provided on the gantry reaction frame. At the same time, in order to limit the left and right moving stroke of the moving beam slider 5-6, a moving beam left limit 5-4 and a moving beam right limit 5-9 may be further provided on the reaction frame moving beam 5-1. In addition, a moving beam locking mechanism 5-2 that can lock its position on the portal reaction frame is also provided on the reaction frame moving beam 5-1. The moving beam locking mechanism 5-2 here can be a structure commonly used in the field that can realize the position locking function, such as a locking pin, etc. The specific structure here does not belong to the innovative protection point of the present invention and will not be repeated here.

[0060] In a more specific implementation, the output end of the first servo actuator 7-1 is also connected to the first horizontal steering assembly 7-2, the first prestressed ring 7-3, the first force sensor 7-4 and the first conversion flange 7-5 in sequence, and is in contact or connected with the loaded object through the first conversion flange 7-5 to achieve load loading. Here, the first horizontal steering assembly 7-2 and the first prestressed ring 7-3 are commonly used structures in the field. The horizontal rotation is achieved by cooperating with the two and adjusting the degree of closure of the prestressed ring. This part of the structure does not belong to the innovative protection point in the field and will not be repeated here.

[0061] In a more specific embodiment, the side wall of the reaction frame column 4-1 is also provided with a movable beam lifting guide rail 4-10 along the Z direction and cooperating with the movable beam 5-1 of the reaction frame, and the portal reaction frame is also provided with a first driving component for driving the movable beam 5-1 of the reaction frame to move along the movable beam lifting guide rail 4-10;

[0062] The reaction frame moving beam 5-1 is also provided with a moving beam rail 5-5 that slides with the moving beam slider 5-6 and moves along the X direction, and a second drive assembly for driving the moving beam slider 5-6 to move back and forth along the moving beam rail 5-5. In the present invention, the first drive assembly and the second drive assembly can adopt a matching screw transmission mechanism. Specifically, the first drive assembly can include a first drive motor 4-7, a moving beam lifting screw, a nut pair that matches the moving beam lifting screw and is connected to the reaction frame moving beam 5-1, etc.; the second drive assembly can include a second drive motor 5-3, a moving beam screw 5-8, a moving beam drive flange 5-7 that is threadedly matched with the moving beam screw 5-8 and fixedly connected to the moving beam slider 5-6, etc.

[0063] In some specific embodiments, the loading frame assembly includes a first loading frame beam 6-1 disposed on the gantry reaction frame and capable of being lifted up and down in the Z direction, a second loading frame beam 6-3 disposed on the first loading frame beam 6-1 and capable of being moved back and forth in the X direction, a second actuating loading unit is disposed on the first loading frame beam 6-1, and the third actuating loading unit is disposed on the second loading frame beam 6-3. In order to limit the lifting stroke of the first loading frame beam 6-1, a corresponding loading frame lifting upper limit 4-5 and loading frame lifting lower limit 4-2 are also disposed on the gantry reaction frame.

[0064] In a more specific embodiment, the gantry reaction frame is further provided with a loading frame lifting rail 4-3 that slides with the first loading frame crossbeam 6-1 along the Z direction through the first crossbeam slider 6-2, and a third driving assembly for driving the first loading frame crossbeam 6-1 to move along the loading frame lifting rail 4-3;

[0065] A loading frame fixing plate 6-5 along the X direction is installed on the first loading frame crossbeam 6-1, and a second crossbeam slider 6-6 that can move back and forth along the loading frame fixing plate 6-5 is installed on the loading frame fixing plate 6-5, and the second loading frame crossbeam 6-3 is arranged on the second crossbeam slider 6-6. In the present invention, the third driving component can also adopt a screw transmission mechanism, specifically, it includes a loading frame lifting drive motor 4-6, a loading frame lifting screw 4-4, and a nut pair that is threadedly matched with the loading frame lifting screw 4-4 and fixedly connected to the first loading frame crossbeam 6-1. In addition, since there are two reaction frame columns 4-1 of the gantry reaction frame, the first loading frame crossbeam 6-1 and the third loading frame crossbeam 6-4 are respectively provided corresponding to the two reaction frame columns 4-1, and then the two can be connected through the loading frame fixing plate 6-5.

[0066] In some specific embodiments, the second actuation loading unit includes a second servo actuator 8-1, and a second horizontal steering assembly 8-2, a second prestressed ring 8-3, a second force sensor 8-4, and a second conversion flange 8-5 which are sequentially connected to the second servo actuator 8-1;

[0067] The third actuation loading unit includes a third servo actuator 9-1, and a third horizontal steering assembly 9-2, a third prestressed ring 9-3, a third force sensor 9-4 and a third conversion flange 9-5 which are sequentially connected to the third servo actuator 9-1;

[0068] The second conversion flange 8 - 5 and the third conversion flange 9 - 5 are configured to contact or connect with the loaded object to achieve load loading.

[0069] In some specific embodiments, the loaded object is a single pile, a pile group, a pile shoe, a suction bucket or a shared anchor.

[0070] The above embodiments may be implemented individually or in any combination of two or more.

[0071] The above implementation is described in more detail below in conjunction with specific examples.

[0072] Embodiment 1:

[0073] In order to solve the problem that there is a lack of high-quality test platforms and that it is not possible to conduct fine research on marine engineering foundations, this embodiment provides a multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations. Figures 1 to 7 As shown, including:

[0074] Base 3;

[0075] The model box 1 is placed on the base 3,

[0076] A portal reaction frame installed on the base 3 and having a degree of freedom along the Y direction;

[0077] A first actuating loading component movably disposed on the portal reaction frame and having degrees of freedom along the Z direction and the X direction, wherein the first actuating loading component is configured to output a load along the Z direction to the loaded object;

[0078] A loading mechanism installed on the gantry reaction frame, comprising a loading frame assembly having a degree of freedom along the Z direction, a second actuation loading unit fixed to the loading frame assembly, and a third actuation loading unit provided on the loading frame assembly and having a degree of freedom along the X direction, wherein the second actuation loading unit is configured to output a load along the X direction, and the third actuation loading unit is configured to output a load along the Y direction;

[0079] And a consolidation plate 13 is configured to be detachably connected to the first actuation loading assembly and to pressurize and consolidate the soil sample in the model box 1.

[0080] The intelligent test platform also includes a data acquisition and control module, which is configured to collect and receive test data during the loading test, and send an execution signal to the operating components including the first actuation loading component, the second actuation loading unit, and the third actuation loading unit according to the experimental data. Specifically, the data acquisition and control module may include three parts: an integrated control cabinet 10, a data acquisition instrument 11, and a control system 12. For example, the integrated control cabinet 10 can be used to receive the actual signals of all drive motors and servo actuators and feed them back to the control system 12; the data acquisition instrument 11 uniformly collects all test data during the test, including the force signal, displacement signal, and displacement signal of the actuator, and can receive real-time signals from other sensors and display them in real time in the control system 12; the control system 12 receives real-time signals from the integrated control cabinet 10 and the data acquisition instrument 11, and makes execution instructions to the actuator, drive motor, etc. through the integrated control cabinet 10. The specific selection of the integrated control cabinet 10, the control system 12, the data acquisition instrument 11, etc. in this part can be conventional model equipment that can realize the above functions in this field, which does not belong to the innovative protection point of the present invention and will not be repeated here.

[0081] The gantry reaction frame includes a reaction frame column 4-1 disposed on the base 3 and movable back and forth along the Y direction, and a reaction frame fixed crossbeam 4-8 connected to the reaction frame column 4-1. In addition, a slide rail for the reaction frame column 4-1 to move can be disposed on the base 3, and a column moving member matching the slide rail, such as a column roller, can be disposed at the bottom of the reaction frame column 4-1 to achieve back and forth movement along a specific direction on the base 3. A column locking mechanism for locking the freedom of movement of the column moving member can also be disposed on the column moving member to achieve position locking after adjustment. This part of the column moving member, the column locking mechanism, etc. are all conventional structures in the field and will not be described in detail here.

[0082] The first actuation loading assembly includes a reaction frame moving beam 5-1 disposed on the gantry reaction frame and capable of being raised and lowered in the Z direction, a moving beam slider 5-6 disposed on the reaction frame moving beam 5-1 and capable of being moved back and forth in the X direction, and a first servo actuator 7-1 installed on the moving beam slider 5-6, wherein the first servo actuator 7-1 is used to output a loading load in the Z direction. In order to limit the lifting and lowering stroke of the reaction frame moving beam 5-1, a corresponding moving beam lifting upper limit 4-9 and moving beam lifting lower limit 4-11 are also provided on the gantry reaction frame. At the same time, in order to limit the left and right moving stroke of the moving beam slider 5-6, a moving beam left limit 5-4 and a moving beam right limit 5-9 may also be further provided on the reaction frame moving beam 5-1. In addition, a moving beam locking mechanism 5-2 that can lock its position on the portal reaction frame is also provided on the reaction frame moving beam 5-1. The moving beam locking mechanism 5-2 here can be a structure commonly used in the field that can realize the position locking function, such as a locking pin, etc. The specific structure here does not belong to the innovative protection point of the present invention and will not be repeated here.

[0083] The output end of the first servo actuator 7-1 is also connected to the first horizontal steering assembly 7-2, the first prestressed ring 7-3, the first force sensor 7-4 and the first conversion flange 7-5 in sequence, and is in contact or connected with the loaded object through the first conversion flange 7-5 to achieve load loading. Here, the first horizontal steering assembly 7-2 and the first prestressed ring 7-3 are commonly used structures in the field. The horizontal rotation is achieved by cooperating with the two and adjusting the degree of closure of the prestressed ring. This part of the structure does not belong to the innovative protection point in this field and will not be repeated here.

[0084] The side wall of the reaction frame column 4-1 is also provided with a movable beam lifting guide rail 4-10 along the Z direction and cooperating with the movable beam 5-1 of the reaction frame, and the portal reaction frame is also provided with a first driving component for driving the movable beam 5-1 of the reaction frame to move along the movable beam lifting guide rail 4-10;

[0085] The reaction frame moving beam 5-1 is also provided with a moving beam slide rail 5-5 that slides with the moving beam slider 5-6 and moves along the X direction, and a second drive assembly for driving the moving beam slider 5-6 to move back and forth along the moving beam slide rail 5-5. In this embodiment, the first drive assembly and the second drive assembly can adopt a matching screw transmission mechanism. Specifically, the first drive assembly can include a first drive motor, a moving beam lifting screw, a nut pair that matches the moving beam lifting screw and is connected to the reaction frame moving beam 5-1, etc.; the second drive assembly can include a second drive motor 5-3, a moving beam screw 5-8, a moving beam drive flange 5-7 that is threadedly matched with the moving beam screw 5-8 and fixedly connected to the moving beam slider 5-6, etc.

[0086] The loading frame assembly includes a first loading frame cross beam 6-1 disposed on the gantry reaction frame and capable of being lifted up and down in the Z direction, a second loading frame cross beam 6-3 disposed on the first loading frame cross beam 6-1 and capable of being moved back and forth in the X direction, a second actuating loading unit is disposed on the first loading frame cross beam 6-1, and the third actuating loading unit is disposed on the second loading frame cross beam 6-3. In order to limit the lifting stroke of the first loading frame cross beam 6-1, a corresponding loading frame lifting upper limit 4-5 and loading frame lifting lower limit 4-2 are also disposed on the gantry reaction frame.

[0087] The gantry reaction frame is also provided with a loading frame lifting rail 4-3 along the Z direction and slidingly matched with the first loading frame cross beam 6-1, and a third driving assembly for driving the first loading frame cross beam 6-1 to move along the loading frame lifting rail 4-3;

[0088] A loading frame fixing plate 6-5 along the X direction is installed on the first loading frame crossbeam 6-1, and a second crossbeam slider 6-6 that can move back and forth along the loading frame fixing plate 6-5 is installed on the loading frame fixing plate 6-5, and the second loading frame crossbeam 6-3 is arranged on the second crossbeam slider 6-6. In the present invention, the third driving component can also adopt a screw transmission mechanism, specifically, it includes a loading frame lifting drive motor 4-6, a loading frame lifting screw 4-4, and a nut pair that is threadedly matched with the loading frame lifting screw 4-4 and fixedly connected to the first loading frame crossbeam 6-1. In addition, since there are two reaction frame columns 4-1 of the gantry reaction frame, the first loading frame crossbeam 6-1 and the third loading frame crossbeam 6-4 are respectively provided corresponding to the two reaction frame columns 4-1, and then the two can be connected through the loading frame fixing plate 6-5.

[0089] The second actuation loading unit includes a second servo actuator 8-1, and a second horizontal steering assembly 8-2, a second prestressed ring 8-3, a second force sensor 8-4 and a second conversion flange 8-5 which are sequentially connected to the second servo actuator 8-1;

[0090] The third actuation loading unit includes a third servo actuator 9-1, and a third horizontal steering assembly 9-2, a third prestressed ring 9-3, a third force sensor 9-4 and a third conversion flange 9-5 which are sequentially connected to the third servo actuator 9-1;

[0091] The second conversion flange 8 - 5 and the third conversion flange 9 - 5 are configured to contact or connect with the loaded object to achieve load loading.

[0092] In this embodiment, the loaded object can be a single pile, a pile group, a pile shoe, a suction bucket or a shared anchor, etc. The servo actuator is a 1-50kN series model to match different loading conditions, each with a matching horizontal steering device, a force sensor (0.1-50kN) and a conversion flange. In this embodiment, the loading capacity of the first servo actuator 7-1 is 50kN, the loading capacity of the second servo actuator 8-1 can be 20kN, and the loading capacity of the third servo actuator 9-1 can be 10kN.

[0093] The device of this embodiment has a crushed stone cushion layer at the bottom of the model box 1, which is used to evenly inlet water from the bottom when water saturation is carried out and prevent soil from being carried out when draining; an inlet and outlet 2 is set outside the box, which is used to obtain water-saturated soil samples and drain water after the experiment is completed.

[0094] During specific work, the consolidation plate 13 can be first assembled and connected with the first conversion flange 7-5 in the first actuating loading assembly through the flange joint, and then, after the first actuating loading assembly is moved to the set loading position, the soil sample loaded in the model box 1 is consolidated and loaded to consolidate the soil sample; subsequently, the loaded object can be replaced according to the actual needs of the test. Taking the shared anchor as an example, the shared anchor can be pressurized and penetrated into the soil sample of the model box 1 by the first actuating loading assembly, and then the preset load can be applied to the shared anchor independently or in combination by the second actuating loading unit and the second actuating loading unit to obtain loading test data.

[0095] During the loading test, the first actuation loading component has three degrees of freedom, namely, X, Y, and Z; the second actuation loading unit has two degrees of freedom, namely, Y and Z; and the third actuation loading unit has three degrees of freedom, namely, X, Y, and Z. According to the execution instructions issued by the control system 12, etc., the loading point can be accurately positioned.

[0096] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A multi-degree-of-freedom, multi-functional intelligent test platform for studying the foundation of marine engineering, characterized by: include: Base; A model box is placed on the base, A portal reaction frame mounted on the base and having a degree of freedom in the Y direction; A first actuating loading component movably disposed on the portal reaction frame and having degrees of freedom along the Z direction and the X direction, wherein the first actuating loading component is configured to output a load along the Z direction to the loaded object; A loading mechanism installed on the gantry reaction frame, comprising a loading frame assembly having a degree of freedom along the Z direction, a second actuation loading unit fixed to the loading frame assembly, and a third actuation loading unit provided on the loading frame assembly and having a degree of freedom along the X direction, wherein the second actuation loading unit is configured to output a load along the X direction, and the third actuation loading unit is configured to output a load along the Y direction; and a consolidation plate, which is configured to be detachably connected to the first actuation loading assembly and to pressurize and consolidate the soil sample in the model box.

2. According to claim 1, a multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations is characterized in that: The intelligent test platform also includes a data acquisition and control module, which is configured to collect and receive test data during the loading test, and send an execution signal to the operating parts including the first actuation loading component, the second actuation loading unit, and the third actuation loading unit according to the experimental data.

3. A multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 2, characterized in that: The data acquisition and control module includes three parts: integrated control cabinet, data acquisition instrument and control system. The integrated control cabinet is used to receive real-time signals of operating components including the first actuation loading assembly, the second actuation loading unit, and the third actuation loading unit and feed them back to the control system. The data acquisition instrument is used to collect displacement signals and loading force signals of the operating components including the first actuation loading component, the second actuation loading unit, and the third actuation loading unit, and feed them back to the control system. The control system is configured to receive real-time signals from the integrated control cabinet and the data acquisition instrument, and send execution signals to the operating components.

4. According to claim 1, a multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations is characterized in that: The portal reaction frame comprises a reaction frame column which is arranged on the base and can move back and forth along the Y direction, and a reaction frame fixed beam which is connected to the reaction frame column.

5. The multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 1 is characterized in that: The first actuation loading assembly includes a reaction frame moving beam disposed on the gantry reaction frame and capable of being raised and lowered in the Z direction, a moving beam slider disposed on the reaction frame moving beam and capable of being moved back and forth in the X direction, and a first servo actuator mounted on the moving beam slider, wherein the first servo actuator is used to output a loading load in the Z direction.

6. A multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 5, characterized in that: The output end of the first servo actuator is also connected to the first horizontal steering assembly, the first prestressed ring, the first force sensor and the first conversion flange in sequence, and is in contact or connected with the loaded object through the first conversion flange to achieve load loading; The side wall of the reaction frame column is also provided with a movable beam lifting guide rail along the Z direction and cooperating with the movable beam of the reaction frame, and the portal reaction frame is also provided with a first driving component for driving the movable beam of the reaction frame to move along the movable beam lifting guide rail; The reaction frame moving beam is also provided with a moving beam slide rail which is slidably matched with the moving beam slider and along the X direction, and a second driving component used for driving the moving beam slider to move back and forth along the moving beam slide rail.

7. The multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 1 is characterized in that: The loading frame assembly includes a first loading frame crossbeam which is arranged on the portal reaction frame and can be lifted up and down in the Z direction, a second loading frame crossbeam which is arranged on the first loading frame crossbeam and can be moved back and forth in the X direction, a second actuating loading unit is arranged on the first loading frame crossbeam, and the third actuating loading unit is arranged on the second loading frame crossbeam.

8. The multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 7 is characterized in that: The gantry reaction frame is also provided with a loading frame lifting slide rail along the Z direction and slidably matched with the first loading frame cross beam, and a third driving component for driving the first loading frame cross beam to move along the loading frame lifting slide rail; A loading frame fixing plate along the X direction is installed on the first loading frame crossbeam, a second crossbeam slider that can move back and forth along the loading frame fixing plate is installed on the loading frame fixing plate, and the second loading frame crossbeam is arranged on the second crossbeam slider.

9. The multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 1 is characterized in that: The second actuation loading unit includes a second servo actuator, and a second horizontal steering assembly, a second prestressed ring, a second force sensor and a second conversion flange which are sequentially connected to the second servo actuator; The third actuation loading unit includes a third servo actuator, and a third horizontal steering assembly, a third prestressed ring, a third force sensor and a third conversion flange which are sequentially connected to the third servo actuator; The second conversion flange and the third conversion flange are configured to contact or connect with the loaded object to achieve load loading.

10. The multi-degree-of-freedom, multi-functional intelligent test platform for studying marine engineering foundations according to claim 1 is characterized in that: The loaded object is a single pile, a pile group, a pile shoe, a suction bucket or a shared anchor.

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