Device for measuring mass loss rate of reinforced sample

Abstract

The utility model discloses a reinforced sample mass loss rate measuring device, and belongs to the technical field of seabed foundation reinforcement, the reinforced sample mass loss rate measuring device comprises a water tank, a supporting structure, a force measuring assembly and a wave generating mechanism, a containing groove with an opening at the upper end is formed in the water tank, and the containing groove is used for containing seawater; the supporting structure comprises a cross beam which is located above the water tank. The force measuring assembly comprises a dynamometer, a connecting rope and a sample cage, the dynamometer is arranged on the cross beam, the sample cage is hung at the lower end of the dynamometer through the connecting rope, and the sample cage is located in the seawater of the containing groove and used for containing a reinforced sample; the wave generating mechanism comprises a disturbance part and a driving assembly, at least part of the disturbance part is located in the seawater in the containing groove, and the driving assembly is used for driving the disturbance part to reciprocate in the horizontal direction so that waves can be generated in the seawater in the containing groove. And the field environment can be simulated more truly through the wave generation mechanism, so that the measurement result is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of seabed foundation reinforcement technology, and in particular to a device for measuring the mass loss rate of reinforced samples. Background Technology

[0002] The extreme environment and complex geological conditions of the seabed, such as uneven soil texture, active geological processes, and strong ocean currents and waves, can all affect the stability of the seabed foundation on which engineering infrastructure is located. In particular, seabed foundations with poor geological conditions are prone to fracturing and dissolution when subjected to mechanical disturbances or environmental influences, which may lead to a decrease in the soil's bearing capacity and, in severe cases, cause instability in structures such as offshore wind turbines and photovoltaic systems.

[0003] For calcareous sand seabed foundations, the porous and irregular shapes of calcareous sand particles result in poor stability, necessitating seabed modification and reinforcement. Microbial-induced calcium carbonate precipitation (MICP) technology, developed jointly by geotechnical engineering and bioengineering, is a green and environmentally friendly reinforcement technique that effectively improves soil strength and inhibits liquefaction failure. This technology differs from traditional reinforcement methods, which often involve high energy consumption and severe environmental pollution. MICP technology relies on specific microorganisms that, through their metabolic processes, combine with positively charged ions in a nutrient solution to form various mineral precipitates. Therefore, using microorganisms to reinforce seabed foundations around infrastructure is an environmentally friendly and sustainable soil reinforcement solution.

[0004] Whether microbially reinforced calcareous sand seabed foundations can maintain stable service under complex seabed geological conditions under long-term seawater ion erosion is currently unknown. There is no testing device that can measure the water immersion stability of microbially reinforced calcareous sand seabed foundations. Utility Model Content

[0005] The purpose of this invention is to provide a device for measuring the mass loss rate of reinforced specimens, used to evaluate the stability of calcareous sand seabed foundations reinforced by microorganisms.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A device for measuring the mass loss rate of reinforced specimens, comprising:

[0008] A water tank, wherein an opening at the top is formed inside the water tank, and the opening at the top is used to hold seawater;

[0009] A supporting structure, including a crossbeam located above the water tank;

[0010] The force measuring assembly includes a force gauge, a connecting rope, and a sample cage. The force gauge is mounted on the crossbeam, and the sample cage is suspended from the lower end of the force gauge by the connecting rope. The sample cage is located in the seawater of the accommodating tank and is used to hold the reinforced sample.

[0011] A wave generating mechanism includes a disturbance component and a drive assembly, at least a portion of the disturbance component being located within the seawater of the receiving tank, and the drive assembly being used to drive the disturbance component to reciprocate horizontally to generate waves in the seawater within the receiving tank.

[0012] Preferably, the drive assembly includes a mounting plate, a motor, a gear, and a rack. The mounting plate is slidably connected to the water tank. The motor is mounted on the mounting plate and is used to drive the gear to rotate. The rack is mounted on the water tank and meshes with the gear. The disturbance element is fixedly mounted on the mounting plate.

[0013] Preferably, the bottom of the mounting plate is provided with a slider, and the water tank is provided with a slide rail, with the slider slidingly engaging with the slide rail.

[0014] Preferably, the drive assembly includes a cylinder and a connector. The cylinder is disposed in the water tank and the piston rod of the cylinder extends horizontally. The connector extends vertically, one end of the connector is connected to the piston rod, and the other end of the connector is connected to the disturbance member.

[0015] Preferably, the sample cage includes a cage body and a handle. The cage body is used to hold the reinforced sample, the handle is located at the top of the cage body, and the connecting rope is connected to the handle.

[0016] Preferably, the disturbance element is cylindrical and extends along the first axis, and the direction of movement of the disturbance element is perpendicular to the first axis.

[0017] Preferably, the force gauge has a hook, and the connecting rope is connected to the hook.

[0018] Preferably, the support structure further includes a support frame, which is disposed outside the water tank and located on one side of the water tank, and one end of the crossbeam is connected to the support frame.

[0019] Preferably, the support structure further includes a locking member, a first mounting hole is provided on the crossbeam, a second mounting hole is provided on the support frame, and the locking member passes through the first mounting hole and the second mounting hole to lock the crossbeam and the support frame.

[0020] Preferably, the support structure further includes a support base, which is disposed at the bottom end of the support frame.

[0021] The beneficial effects of this utility model are:

[0022] The device for determining the mass loss rate of reinforced specimens proposed in this invention has a water tank containing seawater. The specimen cage is suspended from the lower end of a force gauge by a connecting rope. The specimen cage is located in the seawater of the tank and is used to hold the reinforced specimen. The driving component drives the disturbance component to move back and forth in the horizontal direction to generate waves in the seawater of the tank, which can more realistically simulate the field environment, so that the reinforced specimen is subjected to the impact and corrosion of seawater, ensuring more accurate measurement results. The force gauge can measure the mass change of the reinforced specimen under the action of seawater to obtain the mass loss rate. By measuring the mass loss rate of the reinforced specimen, the stability of the calcareous sand seabed foundation after microbial reinforcement can be evaluated. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the device for measuring the mass loss rate of reinforced specimens provided in Embodiment 1 of this utility model;

[0024] Figure 2 This is a partial structural cross-sectional view of the device for determining the mass loss rate of reinforced specimens provided in Embodiment 1 of this utility model;

[0025] Figure 3 This is a partial structural schematic diagram of the device for determining the mass loss rate of reinforced specimens provided in Embodiment 2 of this utility model.

[0026] In the picture:

[0027] 100. Reinforced specimen;

[0028] 10. Water tank; 11. Container tank;

[0029] 20. Support structure; 21. Crossbeam; 22. Support frame; 23. Support base;

[0030] 30. Force measuring assembly; 31. Force gauge; 32. Connecting rope; 33. Sample cage;

[0031] 40. Wave generating mechanism; 41. Agitator; 42. Drive assembly; 421. Mounting plate; 422. Motor; 423. Gear; 424. Rack; 425. Slider; 426. Slide rail; 427. Cylinder; 428. Connector;

[0032] 50. Data acquisition system. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1

[0038] See Figure 1 and Figure 2 This utility model provides a device for measuring the mass loss rate of a reinforced sample, used to determine the mass loss rate of a reinforced sample 100 in a simulated seawater environment. The reinforced sample 100 is soil obtained from a calcareous sandy seabed foundation after microbial reinforcement. The mass loss rate is the mass lost per unit time.

[0039] The device for determining the mass loss rate of reinforced specimens includes a water tank 10, a support structure 20, a force measuring component 30, and a wave generating mechanism 40. The water tank 10 has an open-top accommodating trough 11 for holding seawater. The support structure 20 includes a crossbeam 21 located above the water tank 10. The force measuring component 30 includes a force gauge 31, a connecting rope 32, and a specimen cage 33. The force gauge 31 is mounted on the crossbeam 21, and the specimen cage 33 is suspended from the lower end of the force gauge 31 by the connecting rope 32. The specimen cage 33 is located in the seawater of the accommodating trough 11 and is used to hold the reinforced specimen 100. The wave generating mechanism 40 includes a disturbance component 41 and a driving component 42. At least part of the disturbance component 41 is located in the seawater of the accommodating trough 11, and the driving component 42 is used to drive the disturbance component 41 to reciprocate horizontally to generate waves in the seawater of the accommodating trough 11.

[0040] The accommodating tank 11 of the water tank 10 is used to hold seawater. The sample cage 33 is suspended from the lower end of the force gauge 31 by the connecting rope 32. The sample cage 33 is located in the seawater of the accommodating tank 11 and is used to hold the reinforced sample 100. The driving component 42 is used to drive the disturbance component 41 to move back and forth in the horizontal direction so that waves are generated in the seawater in the accommodating tank 11. This can more realistically simulate the field environment, so that the reinforced sample 100 is subjected to the impact and corrosion of seawater, ensuring more accurate measurement results. The force gauge 31 can measure the mass change of the reinforced sample 100 under the action of seawater and obtain the mass loss rate. By measuring the mass loss rate of the reinforced sample 100, the stability of the calcareous sand seabed foundation after microbial reinforcement can be evaluated.

[0041] Optionally, the force gauge 31 can be an existing digital display force gauge, which can intuitively display the mass of the object to be measured. The mass of the reinforced sample 100 is recorded manually at set intervals until the reinforced sample 100 disintegrates, thus obtaining the mass loss rate of the reinforced sample 100 from the completion of reinforcement to disintegration. Optionally, the force gauge 31 is electrically connected to the data acquisition system 50 to transmit data to the data acquisition system 50. The data acquisition system 50 records and analyzes the mass change data of the reinforced sample 100 in real time until the reinforced sample 100 disintegrates, facilitating subsequent data processing and result analysis. The data acquisition system 50 can be an existing computer. The electrical connection between the force gauge 31 and the computer, as well as the computer's data processing, are conventional technologies and will not be elaborated further here.

[0042] The force gauge 31 has a hook, and the connecting rope 32 is connected to the hook for easy installation and disassembly. It is understood that the sample cage 33 is suspended from the force gauge 31, so the connecting rope 32 is in a taut state, and the length of the connecting rope 32 can be adjusted as needed.

[0043] A sample cage 33 is used to hold the reinforced sample 100, facilitating observation of the reinforced sample 100 without affecting its exposure to seawater impact and erosion. The sample cage 33 can be made of plastic. In this embodiment, the sample cage 33 includes a cage body and a handle. The cage body holds the reinforced sample 100, and the handle is located at the top of the cage body. A connecting rope 32 is connected to the handle. The handle facilitates the handling of the sample cage 33.

[0044] The water tank 10 can be rectangular in shape for ease of manufacturing. The water level in the tank 10 is sufficient to submerge the suspended reinforced sample 100. The seawater in the containment tank 11, along with the wave generator 40, provides the necessary environment for the reinforced sample 100, ensuring the authenticity and effectiveness of the experimental conditions. During the experiment, there is no need to remove the reinforced sample 100 from the seawater, avoiding errors in mass measurement caused by the transfer process.

[0045] The support structure 20 also includes a support frame 22, which is located outside the water tank 10 and on one side of the water tank 10. One end of the crossbeam 21 is connected to the support frame 22. The support frame 22 supports the crossbeam 21, ensuring the stability and safety of the crossbeam 21 and allowing the experiment to proceed smoothly.

[0046] The support structure 20 also includes a support base 23, which is located at the bottom of the support frame 22. The support base 23 provides support for the support frame 22, increases the contact area with the ground or tabletop, and ensures the stability and safety of the support frame 22.

[0047] The crossbeam 21 and the support frame 22 are detachably connected, facilitating installation, disassembly, and storage. The support structure 20 also includes locking components. The crossbeam 21 has a first mounting hole, and the support frame 22 has a second mounting hole. The locking components pass through the first and second mounting holes to lock the crossbeam 21 and the support frame 22. During installation, the first and second mounting holes are aligned, and the crossbeam 21 and support frame 22 are locked together by the locking components passing through the first and second mounting holes. The locking components can be a combination of bolts and nuts. To ensure stability, at least two locking components can be provided. Multiple second mounting holes can be spaced vertically on the support frame 22 to adjust the vertical position of the crossbeam 21, adapting to various usage scenarios and installation environments.

[0048] The disturbance element 41 can be partially or completely located within the seawater, as long as it can disturb the seawater and create waves. The shape and size of the disturbance element 41 can be set according to actual needs. In this embodiment, the disturbance element 41 is cylindrical and extends along the first axis, and the direction of movement of the disturbance element 41 is perpendicular to the first axis. The first axis of the disturbance element 41 extends along the width direction of the receiving groove 11, and the axial length of the disturbance element 41 is less than the width of the receiving groove 11. The disturbance element 41 can be made of plastic material to extend its service life in seawater, specifically, it can be made of existing PVC material.

[0049] In this embodiment, the drive assembly 42 includes a mounting plate 421, a motor 422, a gear 423, and a rack 424. The mounting plate 421 is slidably connected to the water tank 10. The motor 422 is mounted on the mounting plate 421 and drives the gear 423 to rotate. The rack 424 is mounted on the water tank 10, and the gear 423 meshes with the rack 424. The disturbance member 41 is fixedly mounted on the mounting plate 421. The motor 422 drives the gear 423 to rotate, thereby causing the gear 423 to roll along the rack 424. Since both the motor 422 and the gear 423 are mounted on the mounting plate 421, the rolling of the gear 423 can drive both the motor 422 and the mounting plate 421 to reciprocate along the rack 424. The motor 422 can rotate in both forward and reverse directions.

[0050] To facilitate the connection between gear 423 and rack 424, clearance holes can be made in the mounting plate 421, with part of gear 423 passing through the clearance holes to mesh with rack 424. Alternatively, motor 422 and gear 423 can be positioned on the underside of mounting plate 421.

[0051] To ensure smooth sliding of the mounting plate 421, a slider 425 is provided at the bottom of the mounting plate 421, and a slide rail 426 is provided on the water tank 10, with the slider 425 and the slide rail 426 slidingly engaged. In other embodiments, the mounting plate 421 may have a protrusion, and the water tank 10 may have a groove, allowing the protrusion to slide along the groove.

[0052] The motor 422 can be a variable frequency motor. By adjusting the speed of the motor 422, the moving speed of the disturbance component 41 can be changed, thereby generating waves of different frequencies. The faster the moving speed of the disturbance component 41, the higher the wave height. For example, the wave height in the receiving groove 11 can reach 4 cm.

[0053] The aforementioned device for determining the mass loss rate of reinforced specimens is simple in structure, easy to assemble and disassemble, and convenient to use in various scenarios. It does not require complicated operating procedures and is suitable for various experimental environments.

[0054] Example 2

[0055] Figure 3Embodiment 2 is shown, wherein components that are the same as or corresponding to those in Embodiment 1 are represented by the same reference numerals as those in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The difference is that the drive assembly 42 includes a cylinder 427 and a connecting member 428. The cylinder 427 is disposed in the water tank 10, and the piston rod of the cylinder 427 extends horizontally. The connecting member 428 extends vertically, with one end connected to the piston rod and the other end connected to the disturbance member 41. The cylinder 427 drives the piston rod to extend and retract, thereby realizing the horizontal movement of the connecting member 428. The connecting member 428 drives the disturbance member 41 to move horizontally. The structure is simple and easy to operate.

[0056] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for determining the mass loss rate of reinforced specimens, characterized in that, include: A water tank (10) has an opening at the top forming a receiving trough (11) inside the water tank (10) for holding seawater; The support structure (20) includes a crossbeam (21) located above the water tank (10); The force measuring assembly (30) includes a force gauge (31), a connecting rope (32), and a sample cage (33). The force gauge (31) is mounted on the crossbeam (21), and the sample cage (33) is suspended from the lower end of the force gauge (31) by the connecting rope (32). The sample cage (33) is located in the seawater of the receiving tank (11) and is used to hold the reinforced sample (100). The wave generating mechanism (40) includes a disturbance element (41) and a drive assembly (42), at least a portion of the disturbance element (41) being located within the seawater of the receiving tank (11), and the drive assembly (42) being used to drive the disturbance element (41) to reciprocate in a horizontal direction to generate waves in the seawater within the receiving tank (11).

2. The device for determining the mass loss rate of reinforced specimens according to claim 1, characterized in that, The drive assembly (42) includes a mounting plate (421), a motor (422), a gear (423), and a rack (424). The mounting plate (421) is slidably connected to the water tank (10). The motor (422) is mounted on the mounting plate (421) and is used to drive the gear (423) to rotate. The rack (424) is mounted on the water tank (10). The gear (423) meshes with the rack (424). The disturbance member (41) is fixedly mounted on the mounting plate (421).

3. The device for determining the mass loss rate of reinforced specimens according to claim 2, characterized in that, The bottom of the mounting plate (421) is provided with a slider (425), and the water tank (10) is provided with a slide rail (426). The slider (425) and the slide rail (426) slide in cooperation.

4. The device for determining the mass loss rate of reinforced specimens according to claim 1, characterized in that, The drive assembly (42) includes a cylinder (427) and a connector (428). The cylinder (427) is disposed in the water tank (10) and the piston rod of the cylinder (427) extends in the horizontal direction. The connector (428) extends in the vertical direction. One end of the connector (428) is connected to the piston rod, and the other end of the connector (428) is connected to the disturbance member (41).

5. The device for determining the mass loss rate of reinforced specimens according to claim 1, characterized in that, The sample cage (33) includes a cage body and a handle. The cage body is used to hold the reinforced sample (100). The handle is located on the top of the cage body. The connecting rope (32) is connected to the handle.

6. The apparatus for determining the mass loss rate of reinforced specimens according to claim 1, characterized in that, The disturbance element (41) is cylindrical and extends along the first axis, and the direction of movement of the disturbance element (41) is perpendicular to the first axis.

7. The apparatus for determining the mass loss rate of reinforced specimens according to claim 1, characterized in that, The force gauge (31) has a hook, and the connecting rope (32) is connected to the hook.

8. The apparatus for determining the mass loss rate of reinforced specimens according to any one of claims 1-7, characterized in that, The support structure (20) also includes a support frame (22), which is located outside the water tank (10) and on one side of the water tank (10), and one end of the crossbeam (21) is connected to the support frame (22).

9. The apparatus for determining the mass loss rate of reinforced specimens according to claim 8, characterized in that, The support structure (20) also includes a locking member. The crossbeam (21) is provided with a first mounting hole, and the support frame (22) is provided with a second mounting hole. The locking member passes through the first mounting hole and the second mounting hole to lock the crossbeam (21) and the support frame (22).

10. The apparatus for determining the mass loss rate of reinforced specimens according to claim 8, characterized in that, The support structure (20) also includes a support base (23), which is located at the bottom end of the support frame (22).

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