Remodeled saturated soft clay cutting ring sample preparation device

Abstract

The utility model relates to a remodeling saturated soft clay cutting ring sample preparation device which comprises a pressurizing module and a remodeling assembly, the pressurizing module comprises a load controller, a lifting platform, a pressurizing cover and a counter-force frame; the remolding assembly comprises an extension cylinder, a consolidation cylinder and a base; the consolidation cylinder is composed of two semicircular cylinder structures, and an interlayer is arranged in the cylinder wall of the consolidation cylinder; one ends of the semicircular cylinders are connected through hinges, and the other ends are connected together through bolts; and the fixed cylinder bottom is locked with the base. The beneficial effects of the utility model are that the numerical control pressurization system is adopted to replace the traditional weight adding to provide pressure, so that the manual labor is reduced; the fixing cylinder and the base are fixedly connected through the groove and the fixing protruding block. The connection mode is simple and convenient to operate; the consolidation cylinder is of a two-section semicircular cylinder structure, the semicircular cylinders are screwed and connected through bolts, operation is easy, it is guaranteed that a soil sample cannot overflow from the joint of the consolidation cylinder and the extension cylinder during extrusion, disturbance to a soil body is reduced, and the accuracy of follow-up tests is improved.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical sample preparation equipment, and in particular to a device for preparing ring samples of reshaped saturated soft clay. Background Technology

[0002] In-situ soil geotechnical testing is of great significance in geotechnical engineering, but the acquisition and preservation of undisturbed soil samples are easily disturbed, leading to distorted test results that fail to accurately reflect the in-situ engineering properties of the soil. Furthermore, undisturbed soil samples are limited by sampling location and depth, making it difficult to meet the needs of large-scale testing. Therefore, remolded soil samples have become an important alternative.

[0003] However, traditional methods for preparing remolded ring samples have many drawbacks. For example, the process of first creating large soil blocks, then cutting them into smaller samples, and finally shaping them into samples of the appropriate form, easily causes secondary disturbance to the soil samples, affecting the experiments. Secondly, some researchers have adjusted the mass of dry soil and water, mixed them evenly, and then compacted them, but each soil sample is greatly affected by human intervention, making it difficult to standardize their physical and mechanical properties. Currently, for saturated remolded soft clay ring samples with a diameter of 100 mm or more, not only is there a lack of corresponding compaction equipment, but the saturation and consolidation process after compaction is also relatively cumbersome.

[0004] Therefore, there is an urgent need to design a device for preparing reshaped saturated soft clay ring samples that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a device for preparing ring samples of reshaped saturated soft clay.

[0006] This device for preparing ring samples of reshaped saturated soft clay includes: a pressurization module and a reshaping assembly; the pressurization module includes a load controller, a lifting platform, a pressurization cover, and a reaction frame; the load controller has a lifting platform on top, and the reaction frame includes height-limiting supports, a reaction beam, and a reaction column; the height-limiting supports are welded to both sides of the top of the load controller, and a reaction beam is connected between the upper ends of the height-limiting supports, with a reaction column fixed in the middle of the reaction beam; the pressurization cover is located on top of the reshaping assembly, and the bottom of the reaction column and the top of the pressurization cover are coaxial; the reshaping assembly includes a consolidation cylinder, an extension cylinder, and a base; the extension cylinder is connected to the top of the consolidation cylinder, and the base is connected to the bottom of the consolidation cylinder; the consolidation cylinder includes two semi-cylindrical sections, and several partitions are provided inside the consolidation cylinder.

[0007] Preferably, the semi-cylinder joint is provided with a groove, and a waterproof rubber strip is embedded in the groove; one end of the semi-cylinder is connected by a hinge, and the other end is provided with a connecting protrusion; the semi-cylinder is connected by bolts.

[0008] Preferably, the inner diameters of the partition, extension tube, and pressure cap are the same.

[0009] Preferably, the bottom of the extension cylinder is provided with an annular compaction block; the bottom of the annular compaction block is fitted with an O-ring rubber ring, and the bottom side wall is provided with a connecting ear; the top side wall of the consolidation cylinder is provided with a connecting ear, the connecting ear on the bottom side wall of the annular compaction block and the connecting ear on the top side wall of the consolidation cylinder are fitted together and have an opening, and the connecting ear on the bottom side wall of the annular compaction block and the connecting ear on the top side wall of the consolidation cylinder are connected by bolts in the opening.

[0010] Preferably, the lower edge of the extension tube is provided with a cutting edge, and the cutting edge matches the shape of the upper edge of the uppermost partition in the consolidation tube.

[0011] Preferably, the bottom of the consolidation cylinder is provided with a fixing protrusion, and the top of the base is provided with a groove, the fixing protrusion is fitted into the groove, and the consolidation cylinder and the base are fixedly connected.

[0012] Preferably, the bottom of the consolidation cylinder and the top of the extension cylinder are provided with permeable plates; the bottom of the base is provided with a drainage groove.

[0013] Preferably, the height restriction column is a threaded column with threads at the top; a reaction beam passes through the top of the height restriction column, and the thread height is greater than the height of the reaction beam; nuts are provided on the threads on the top and bottom sides of the reaction beam, and the reaction beam is fixed to the top of the height restriction column by the nuts.

[0014] The beneficial effects of this utility model are:

[0015] 1) This utility model controls the lifting platform through a load controller and uses a CNC pressurization system to replace the traditional method of adding weights to provide pressure, thus reducing manual labor.

[0016] 2) The bottom of the solidification cylinder of this utility model is provided with a fixing protrusion, and the top of the base is provided with a groove. The solidification cylinder and the base are fixedly connected through the groove and the fixing protrusion; the connection method is simple and easy to operate.

[0017] 3) This utility model adopts a consolidation cylinder with a partition. The consolidation cylinder adopts a two-part semi-cylindrical structure. One end of the semi-cylindrical is connected by a hinge, and the other end is provided with a connecting protrusion. The semi-cylindrical is connected by bolts. The operation is simple, it is easy to obtain soil samples, and it reduces the disturbance to the soil.

[0018] 4) The side walls of the consolidation cylinder and extension cylinder of this utility model are provided with connecting lugs, and an O-ring is provided between the consolidation cylinder and the extension cylinder. The lower edge of the extension cylinder is provided with a cutting edge, and the cutting edge matches the shape of the upper edge of the uppermost partition in the consolidation cylinder. When connecting the consolidation cylinder and the extension cylinder, the cutting edge and the upper edge of the partition form the first fixing. Tightening the bolts of the connecting lugs makes the O-ring fit between the consolidation cylinder and the extension cylinder, forming the second sealing fixing. This ensures that the soil sample will not overflow from the joint between the consolidation cylinder and the extension cylinder during compression, ensuring the integrity of the soil sample. This makes the uniformity, density and moisture content of the prepared soil sample consistent, increasing the accuracy of subsequent tests. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this practical tool;

[0020] Figure 2 This is a schematic diagram of a consolidated cylinder structure;

[0021] Figure 3 This is a schematic diagram of the extension tube structure;

[0022] Figure 4 This is a schematic diagram of the base structure.

[0023] Explanation of reference numerals in the attached drawings: 1. Partition; 2. Consolidation cylinder; 3. Bolt; 4. Connecting protrusion; 5. Base; 6. Extension cylinder; 7. Annular compaction block; 8. O-ring; 9. Connecting lug; 10. Pressure cover; 11. Lifting platform; 12. Height-limiting support column; 13. Nut; 14. Reaction beam; 15. Reaction column; 16. Load controller; 17. Hinge; 18. Rubber strip; 19. Fixing protrusion; 20. Drainage channel. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0025] As one embodiment, a device for preparing ring samples of reshaped saturated soft clay is proposed, such as... Figures 1 to 4 As shown, it includes: a pressurization module and a remodeling assembly; the pressurization module includes a load controller 16, a lifting platform 11, a pressurization cover 10, and a reaction frame; the load controller 16 has a lifting platform 11 on its top, and the reaction frame includes height-limiting supports 12, reaction beams 14, and reaction columns 15; the height-limiting supports 12 are welded to both sides of the top of the load controller 16, and the upper ends of the height-limiting supports 12 are connected to the reaction beams 14, with the reaction columns 15 fixed in the middle of the reaction beams 14; the pressurization cover 10 is located on the remodeling assembly. The top of the component, the bottom of the reaction column 15, and the top of the pressure cover 10 are coaxial; the remodeling component includes a consolidation cylinder 2, an extension cylinder 6, and a base 5; the extension cylinder 6 is connected above the consolidation cylinder 2 and the base 5 is connected below it; the consolidation cylinder 2 is composed of two semi-cylindrical parts, and several partitions 1 are provided inside the consolidation cylinder 2; the inner diameters of the partitions 1, the extension cylinder 6, and the pressure cover 10 are the same; the bottom of the consolidation cylinder 2 and the top of the extension cylinder 6 are provided with permeable plates; the inner diameters of the partitions 1, the extension cylinder 6, and the pressure cover 10 are the same.

[0026] The load controller 16 is used to drive the lifting platform 11 to rise and to apply the corresponding load in conjunction with the reaction frame; the bottom of the reaction column 15 is aligned with the top of the pressure cover 10, and the soil is consolidated by applying the load.

[0027] like Figure 1 and Figure 2 As shown, the consolidation cylinder 2 is composed of two semi-cylinders. A groove is provided at the connection of the semi-cylinders, and a waterproof rubber strip 18 is embedded in the groove. One end of the semi-cylinder is connected by a hinge 17, and the other end is provided with a connecting protrusion 4. The semi-cylinders are connected by tightening bolts 3. The lower edge of the extension cylinder 6 is provided with a cutting edge, and the cutting edge matches the shape of the upper edge of the uppermost partition 1 in the consolidation cylinder 2.

[0028] like Figure 2 and Figure 4 As shown, an extension cylinder 6 is placed above the consolidation cylinder 2, and connected to the base 5 below via a fixing protrusion 19; the inner wall of the consolidation cylinder 2 is provided with five partitions 1, and the spacing between every two partitions 1 is equal to the height of the ring cutter; the partitions 1 inside the consolidation cylinder 2 place the ring cutter in layers, and the shape of the partitions 1 matches the shape of the outer edge of the ring cutter, the inner diameter of the cylinder wall is the same as the outer diameter of the ring cutter, the inner diameter of the partitions 1 is the same as the inner diameter of the ring cutter, and the base 5 is provided with a drainage groove 20; the bottom of the consolidation cylinder 2 is provided with a fixing protrusion 19, and the top of the base 5 is provided with a groove, the fixing protrusion 19 is fitted into the groove, and the consolidation cylinder 2 and the base 5 are fixedly connected.

[0029] like Figures 1 to 3 As shown, an extension cylinder 6 is connected to the top of the consolidation cylinder 2, and an annular compaction block 7 is provided at the bottom of the extension cylinder 6, which is connected to the base 5. An O-ring rubber ring 8 is fitted on the bottom of the annular compaction block 7, and a connecting lug 9 is provided on the bottom side wall. A connecting lug 9 is provided on the top side wall of the consolidation cylinder 2. The connecting lug 9 on the bottom side wall of the annular compaction block 7 and the connecting lug 9 on the top side wall of the consolidation cylinder 2 are fitted together and have an opening. The connecting lug 9 on the bottom side wall of the annular compaction block 7 and the connecting lug 9 on the top side wall of the consolidation cylinder 2 are connected by bolts 3 in the opening. This ensures that the soil sample will not overflow from the joint between the consolidation cylinder 2 and the extension cylinder 6 during compression, ensuring the integrity of the soil sample. This makes the uniformity, density and moisture content of the prepared soil sample consistent, increasing the accuracy of subsequent tests.

[0030] like Figure 1 As shown, the reaction frame includes a height-limiting column 12, a reaction beam 14, and a reaction column 15; the height-limiting column 12 is a threaded column with a thread at its upper end; the reaction beam 14 passes through the upper end of the height-limiting column 12, and the thread height is greater than the height of the reaction beam 14; nuts are provided on the threads on the upper and lower sides of the reaction beam 14, and the reaction beam 14 is fixed to the upper end of the height-limiting column 12 by the nuts.

Claims

1. A remolded saturated soft clay ring- knife sample preparation device, characterized by, The utility model relates to a kind of pressure module and remodeling components;Pressure module includes load controller, lifting platform, pressurizing cover and counterforce frame;Load controller top is equipped with lifting platform, counterforce frame includes height-limiting pillar, counterforce beam and counterforce column;Height-limiting pillar is welded in load controller top two sides, height-limiting pillar upper end is connected with counterforce beam, and counterforce beam middle part is fixed with counterforce column;Pressurizing cover is equipped in remodeling component top, and counterforce column bottom and pressurizing cover top coaxial line;Remodeling component includes consolidation cylinder, extension cylinder and base;Consolidation cylinder upper connection has extension cylinder, and lower and base connection;Consolidation cylinder includes two petal half cylinders, and consolidation cylinder is equipped with several layers. Half cylinder connecting portion is provided with groove, and waterproof rubber strip is embedded in groove;Half cylinder one end is connected by hinge, and the other end is equipped with connecting lug;Half cylinder is connected by bolt tightening.

2. The remolded saturated soft clay ring- knife sample preparation device of claim 1, wherein, The inner diameter of the layer, the extension cylinder and the pressurizing cover is the same.

3. The remolded saturated soft clay ring- knife sample preparation device of claim 1, wherein, Extension cylinder bottom is equipped with annular compaction block;O-shaped rubber ring is sleeved on the bottom of annular compaction block, and connecting lug is arranged on the side wall of bottom;Connecting lug is arranged on the side wall of the top of consolidation cylinder, and the connecting lug on the side wall of the bottom of annular compaction block and the connecting lug on the side wall of the top of consolidation cylinder are fitted and provided with opening, and the connecting lug on the side wall of the bottom of annular compaction block and the connecting lug on the side wall of the top of consolidation cylinder are connected by bolt in the opening.

4. The remolded saturated soft clay undrained shear strength ring- knife sample preparation apparatus of claim 1, wherein, The lower edge of the extension cylinder is provided with a blade edge, and the shape of the blade edge and the upper edge of the uppermost layer in the consolidation cylinder is consistent.

5. The remolded saturated soft clay undrained shear strength ring- knife sample preparation apparatus of claim 1, wherein, The bottom of the consolidation cylinder is provided with a fixing lug, and the top of the base is provided with a groove, the fixing lug is fitted in the groove, and the consolidation cylinder and the base are fixedly connected.

6. The remolded saturated soft clay undrained shear strength ring- knife sample preparation apparatus of claim 1, wherein, The bottom of the consolidation cylinder and the top of the extension cylinder are provided with a water-permeable plate, and the bottom of the base is provided with a drainage groove.

7. The remolded saturated soft clay ring- knife sample preparation apparatus of claim 1, wherein, The height-limiting pillar is a threaded column, and the upper end of the height-limiting pillar is provided with a thread;The height-limiting pillar upper end penetrates counterforce beam, and the height of the thread is greater than the height of the counterforce beam;The threads on the upper and lower sides of the counterforce beam are provided with nuts, and the counterforce beam is fixed on the upper end of the height-limiting pillar by the nuts.

8. The remolded saturated soft clay undrained shear strength ring- knife sample preparation apparatus of claim 1, wherein, ​

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