Variable-scale multifunctional pile foundation engineering model test device

Abstract

The utility model discloses a variable-scale multifunctional pile foundation engineering model test device, which comprises a model box, an upper base, a screw rod and a lower base, and the upper base and the lower base are respectively positioned above and below the model box and are supported by the screw rod; moving assemblies are arranged on the two opposite sides of the upper end face of the upper base in a sliding mode, a main beam is arranged on the two moving assemblies jointly, and a rolling assembly is arranged on the main beam. By arranging the screw rod, the model box and the rolling assembly, the overall height of the device can be adjusted through the screw rod, the model box with the height suitable for the experiment can be selected through the model box, and various experiment tools can be conveniently built through the rolling assembly, so that the device can be applied to various pile foundation engineering experiments; the application range of the test device is expanded, and the quality and efficiency of pile foundation engineering research are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation engineering, in particular to a variable-scale multifunctional pile foundation engineering model test device. Background Art

[0002] Pile foundation engineering is an indispensable part of geotechnical engineering and is widely used in construction engineering and bridge engineering. Due to the diversity of soil, different regions present completely different soil conditions. In-situ testing is particularly critical in this context, as it provides the most realistic experimental data. However, in-situ testing of pile foundation engineering requires a lot of financial and material resources, and the test cycle is long. Indoor model experiments have been widely recognized in the field of engineering applications because of their strong operability, controllable environment, and significant savings in time and money. In view of the characteristics of vertical loads in current pile foundation engineering, most of the scenarios simulated by indoor test devices are: pile sinking test, single pile vertical compressive static load test, and single pile vertical tensile static load test.

[0003] In the prior art, a utility model patent with patent application number CN202120456039.X discloses a pile foundation indoor model test device, including an experimental box, a partition is fixedly connected to the inner wall of the experimental box, the bottom of the partition is filled and compacted with foundation pit soil, a buried hole is opened on the top of the partition, a pile foundation is arranged inside the buried hole, the bottom end of the pile foundation is inserted into the foundation pit soil, and a fixed plate is fixedly connected to the top of the pile foundation, and the left and right sides of the fixed plate are respectively rotatably connected to the bottom end of a group of rotating rods. The pile foundation indoor model test device, by setting a rotating rod and a balance block, when the user applies a downward force to the load-bearing plate, the load-bearing plate applies an upward force to the pile foundation through the vertical rod and the rotating rod, thereby detecting the vertical load of the pile foundation, and by setting the distance between the left side of the balance block and the left end of the rotating rod equal to one-fourth of the length of the rotating rod, the increase in the force applied to the pile foundation is small, thereby improving the precision of the device.

[0004] The above patent describes a pile foundation indoor model test device. By setting a rotating rod and a balance block, the increase in the force on the pile foundation is small, which improves the precision of the device. At the same time, by setting a strain gauge and a dial indicator on the top of the horizontal frame, when the pile foundation moves under the action of external force, the force of the strain gauge colliding with the horizontal frame can be detected by the dial indicator, which is convenient for recording the horizontal or vertical load of the pile foundation. However, the existing pile foundation engineering model test devices generally have certain limitations. They are often designed for specific test scenarios and lack sufficient versatility and flexibility. Not only does it limit the application scope of the test device, but it also leads to inefficient use of resources. It needs further improvement. Utility Model Content

[0005] The utility model aims to provide a variable-scale multifunctional pile foundation engineering model test device, aiming to improve the problems of the existing pile foundation engineering model test device having a small application range, lacking sufficient versatility and flexibility, resulting in low resource utilization, and low quality and efficiency of pile foundation engineering research.

[0006] The utility model is implemented as follows: a variable-scale multifunctional pile foundation engineering model test device comprises a model box, an upper base, a screw rod and a lower base, wherein the upper base and the lower base are respectively located at the upper and lower parts of the model box and are supported by the screw rod; movable components are slidably arranged on both sides of the upper end surface of the upper base, a main beam is commonly arranged on the two movable components, and a rolling component is arranged on the main beam.

[0007] Preferably, the upper base and the lower base are connected by a plurality of equilateral angle steels intersecting vertically and horizontally; the four corners of the opposite end faces of the upper base and the lower base are connected by screws.

[0008] Preferably, bolt holes are arranged at the four corners of the lower base, and circular holes are arranged at positions corresponding to the bolt holes on the upper base. The lower end of the screw rod is installed in the bolt hole, and a nut is arranged at the upper end through the circular hole.

[0009] Preferably, the model box includes a box body; the model box is connected by a plurality of boxes, and the bottom of the box body at the bottom layer is sealed, and the front and rear sides of the box body are made of acrylic material plates.

[0010] Preferably, the upper and lower ends of the box bodies are both provided with connecting edges extending outward, and the connecting edges of adjacent boxes are abutted against each other and connected by bolts.

[0011] Preferably, slide rails are fixedly provided on opposite sides of the upper end surface of the upper base, and scale lines are engraved on the slide rails; a slide groove matching the slide rail is provided on the lower end surface of the movable component, and the movable component is slidably set on the slide rail through the slide groove.

[0012] Preferably, both ends of the main beam are overlapped on the moving component, and the main beam includes a plurality of steel plates, and the plurality of steel plates are arranged in parallel without abutting each other, and both ends are fixedly connected.

[0013] Preferably, the rolling assembly includes two pulleys, the two pulleys are connected by a screw, the screw is fixed on the main beam, and the pulleys are respectively located on both sides of the main beam.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is provided with a screw rod, a model box and a rolling assembly. The overall height of the device can be adjusted through the screw rod, a model box with a height suitable for the experiment can be selected through the model box, and various experimental tools can be conveniently built through the rolling assembly, so that the device can be applied to a variety of pile foundation engineering experiments, expand the application scope of the test device, and improve the quality and efficiency of pile foundation engineering research.

[0016] 2. The utility model can be easily disassembled and installed by setting up the mobile components and the main beam, and by building between the main beam and the mobile components; it is convenient to build various experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the test device of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the slide rail of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the model box of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the main beam and the rolling assembly on the main beam of the utility model.

[0021] In the figure: 1. lower base; 2. screw; 3. model box; 301. connecting edge; 302. box body; 4. upper base; 5. moving assembly; 6. rolling assembly; 7. slide rail; 8. main beam; 9. nut; 10. loading device; 11. pulley; 12. steel plate. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is a further description with reference to the accompanying drawings and specific embodiments: Example 1

[0024] like Figure 1 and Figure 3As shown, a variable-scale multifunctional pile foundation engineering model test device includes a model box 3, a lower base 1, a screw 2 and an upper base 4, the lower base 1 and the upper base 4 are respectively located at the upper and lower parts of the model box 3, and are supported by the screw 2, the lower base 1 and the upper base 4 are connected by a plurality of equilateral angle steels intersecting vertically and horizontally, and the plurality of equilateral angle steels intersecting vertically and horizontally are connected by welding; the model box 3 includes a box body 302; the model box 3 is connected by a plurality of box bodies 302, and the bottom of the box body 302 at the bottom is sealed. The material of the front and rear sides of the box 302 is an acrylic plate. The upper and lower ends of the box 302 are extended outward to be provided with connecting edges 301. The connecting edges 301 of adjacent boxes 302 are abutted against each other and connected by bolts; the four corners of the opposite end faces of the lower base 1 and the upper base 4 are connected by screws 2, and the four corners of the upper base 4 are provided with bolt holes. The lower base 1 is provided with round holes corresponding to the positions of the bolt holes. The lower end of the screw 2 is installed in the bolt hole and fixed by welding. The upper end is provided with a nut 9 passing through the round hole.

[0025] like Figure 2 and Figure 4 As shown, moving components 5 are slidably arranged on both sides of the upper end surface of the lower base 1, and slide rails 7 are fixedly arranged on both sides of the upper end surface of the lower base 1. The slide rails 7 are engraved with scale lines, and the slide rails 7 are welded to the upper base 4; the lower end surface of the moving component 5 is provided with a slide groove matched with the slide rail 7, and the moving component 5 is slidably arranged on the slide rail 7 through the slide groove. The moving component 5 is composed of I-beams and moves in coordination with the slide rail 7; a main beam 8 is commonly arranged on the two moving components 5, and a rolling component 6 is arranged on the main beam 8; both ends of the main beam 8 are overlapped on the moving component 5, and the main beam 8 includes a plurality of steel plates 12, and the plurality of steel plates 12 are arranged in parallel without abutting each other. A gap of about 10 cm is left inside the main beam, and the two ends are fixedly connected, and the rolling component 6 includes two pulleys 11, and the two pulleys 11 are connected by a screw, and the screw is fixedly arranged on the main beam 8, and the pulleys 11 are respectively located on both sides of the main beam 8. Example 2

[0026] like Figure 1 and Figure 3As shown, a variable-scale multifunctional pile foundation engineering model test device includes a model box 3, a lower base 1, a screw rod 2 and an upper base 4, the lower base 1 and the upper base 4 are respectively located at the upper and lower parts of the model box 3, and are supported by the screw rod 2, and the lower base 1 and the upper base 4 are connected by a plurality of equilateral angle steels intersecting vertically and horizontally; the model box 3 includes a box body 302; the model box 3 is connected by a plurality of box bodies 302, and the bottom of the box body 302 at the bottom is sealed, and the front and rear sides of the box body 302 are made of acrylic material plates, and the upper and lower ends of the box body 302 are both extended outwardly to be provided with connecting edges 301, and the connecting edges 301 of adjacent box bodies 302 are abutted and connected by bolts; the four corners of the opposite end faces of the lower base 1 and the upper base 4 are connected by the screw rod 2, and the four corners of the upper base 4 are provided with bolt holes, and the lower base 1 is provided with round holes corresponding to the positions of the bolt holes, the lower end of the screw rod 2 is installed in the bolt hole, and the upper end is provided with a nut 9 passing through the round hole.

[0027] like Figure 2 and Figure 4 As shown, moving components 5 are slidably arranged on both sides of the upper end surface of the lower base 1, and slide rails 7 are fixedly arranged on both sides of the upper end surface of the lower base 1, and scale lines are engraved on the slide rails 7; the lower end surface of the moving component 5 is provided with a slide groove matched with the slide rail 7, and the moving component 5 is slidably arranged on the slide rail 7 through the slide groove; a main beam 8 is commonly arranged on the two moving components 5, and a rolling component 6 is arranged on the main beam 8; both ends of the main beam 8 are overlapped on the moving component 5, and the main beam 8 includes a plurality of steel plates 12, and the plurality of steel plates 12 are arranged in parallel without abutting each other, and the two ends are fixedly connected, and the rolling component 6 includes two pulleys 11, and the two pulleys 11 are connected by a screw, and the screw is fixedly arranged on the main beam 8, and the pulleys 11 are respectively located on both sides of the main beam 8.

[0028] The working principle of the utility model is as follows: during the test, the soil is filled and compacted in layers, and the model box is installed according to the soil layer height required for the experiment, and the size of the entire test device is controlled by the screw 2, and the model box 3 of the corresponding height is selected and installed. Components such as soil pressure boxes and pore water pressure sensors can be buried in the soil. Both sides of the model box are organic glass plates, and each layer of the box body 302 is sealed and fixed by multiple bolts, which is convenient for loading and unloading the test soil. At the same time, the organic glass plate is used to observe and control the soil layer thickness during the filling process, and the soil morphology changes are observed during the test.

[0029] In summary, the utility model sets a screw rod 2, a model box 3 and a rolling assembly 6. The screw rod 2 can be used to adjust the overall height of the device, the model box 3 with a height suitable for the experiment can be selected, and the rolling assembly 6 can be used to conveniently build various experimental tools, so that the device can be applied to a variety of pile foundation engineering experiments, expand the application range of the test device, and improve the quality and efficiency of pile foundation engineering research; by setting a mobile assembly 5 and a main beam 8, the main beam 8 and the mobile assembly 5 can be easily disassembled and installed through the construction; it is convenient to build various experiments.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A variable-scale multifunctional pile foundation engineering model test device, comprising a model box (3), characterized in that: A lower base (1), a screw rod (2) and an upper base (4), wherein the lower base (1) and the upper base (4) are respectively located above and below a model box (3) and are supported by the screw rod (2); movable components (5) are slidably arranged on opposite sides of the upper end surface of the lower base (1), a main beam (8) is commonly arranged on the two movable components (5), and a rolling component (6) is arranged on the main beam (8).

2. A variable-scale multifunctional pile foundation engineering model test device according to claim 1, characterized in that: The lower base (1) and the upper base (4) are both connected by a plurality of equilateral angle steels that intersect vertically and horizontally; the four corners of the opposite end faces of the lower base (1) and the upper base (4) are connected by screw rods (2).

3. A variable-scale multifunctional pile foundation engineering model test device according to claim 2, characterized in that: Bolt holes are arranged at the four corners of the upper base (4), and circular holes are arranged at the positions of the lower base (1) corresponding to the bolt holes. The lower ends of the screw rods (2) are installed in the bolt holes, and nuts (9) are arranged at the upper ends through the circular holes.

4. The variable-scale multifunctional pile foundation engineering model test device according to claim 1 is characterized in that: The model box (3) comprises a box body (302); the model box (3) is connected by a plurality of boxes (302), and the bottom of the box body (302) is sealed, and the front and rear sides of the box body (302) are made of acrylic material plates.

5. The variable-scale multifunctional pile foundation engineering model test device according to claim 4 is characterized in that: The upper and lower ends of the box bodies (302) are both provided with connecting edges (301) extending outwards, and the connecting edges (301) of adjacent box bodies (302) are abutted against each other and connected by bolts.

6. The variable-scale multifunctional pile foundation engineering model test device according to claim 1 is characterized in that: Slide rails (7) are fixedly arranged on opposite sides of the upper end surface of the lower base (1), and scale lines are engraved on the slide rails (7); a slide groove matching the slide rails (7) is arranged on the lower end surface of the moving component (5), and the moving component (5) is slidably arranged on the slide rails (7) through the slide groove.

7. The variable-scale multifunctional pile foundation engineering model test device according to claim 1 is characterized in that: Both ends of the main beam (8) are overlapped on the moving assembly (5), and the main beam (8) comprises a plurality of steel plates (12). The plurality of steel plates (12) are arranged in parallel without abutting each other, and the two ends are fixedly connected.

8. The variable-scale multifunctional pile foundation engineering model test device according to claim 1 is characterized in that: The rolling assembly (6) comprises two pulleys (11), the two pulleys (11) are connected via a screw rod, the screw rod is fixedly arranged on the main beam (8), and the pulleys (11) are respectively located on both sides of the main beam (8).

Images