A false bottom for underwater shaking table tests to simulate underwater topography

Abstract

This invention discloses a simulated underwater tank bottom for underwater shaking table tests, belonging to the field of underwater shaking table testing technology. It includes: a fixed support; a movable support located on both sides of the fixed support and connected to it, with a connecting component at the top for connecting structures; a simulated bottom grid located at the top of the movable support and connected to it; and a simulated bottom surface fixed to the upper part of the simulated bottom grid. This invention allows for rapid assembly and reuse, improving the efficiency of underwater shaking table use and avoiding resource waste. Simultaneously, its modular design allows for flexible assembly according to needs, expanding the applicability of this type of simulated tank bottom to underwater shaking table tests of different scales.

Description

Technical Field

[0001] This invention belongs to the field of underwater shaking table testing technology, specifically relating to a false bottom of a pool used for simulating underwater topography in underwater shaking table testing. Background Technology

[0002] For structures in water-related environments such as bridges and marine engineering, the underwater (seabed) environment is extremely complex, resulting in complex hydrodynamic conditions acting on the structure. When conducting underwater shaking table tests, simple simulations of uniform flow fields or wave fields cannot reflect the hydrodynamic characteristics of the real environment. Therefore, it is necessary to design a simulated bottom pool for underwater shaking table tests to simulate the underwater topography.

[0003] In existing technologies, the construction of false bottoms for water tanks mostly adopts traditional building materials such as concrete or masonry. Although it can simulate the underwater terrain, the construction time is long and the cost is high, which reduces the efficiency of the underwater vibration table. In addition, it is not easy to disassemble and cannot be reused, resulting in a certain waste of resources. Summary of the Invention

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A simulated bottom for underwater shaking table testing to simulate underwater topography includes:

[0006] Fixed bracket;

[0007] A movable support is located on both sides of the fixed support and connected to the fixed support. The top of the movable support has a connecting component for connecting the structure.

[0008] A false bottom grille, which is located on top of the movable support and connected to the movable support;

[0009] A false bottom surface, which is fixed to the upper part of the false bottom grid.

[0010] Furthermore, the fixed support includes a fixed support steel column and a fixed support steel beam connected to the upper part of the fixed support steel column. The bottom of the fixed support steel column is provided with a first base plate, and the upper part of the first base plate is provided with a first lower connecting ear plate. The first lower connecting ear plate is located on both sides of the bottom of the fixed support steel column.

[0011] Furthermore, the fixed support steel beam includes a first steel beam and a second steel beam arranged symmetrically, and a connector located between the first steel beam and the second steel beam and connected to the first steel beam and the second steel beam. The outer ends of the first steel beam and the second steel beam are provided with a first upper connecting ear plate, and the first upper connecting ear plate and the first lower connecting ear plate are located on the same side.

[0012] Furthermore, the movable support includes a movable support steel column, a column top steel beam, a column bottom steel beam, and inter-column supports connected to the column bottom steel beam and the column top steel beam, with the inter-column supports arranged crosswise; the column top steel beam is connected to the top of the movable support steel column, the column bottom steel beam is connected to the bottom of the movable support steel column, the bottom of the movable support steel column is provided with a second base plate, and the bottom side of the movable support steel column and located above the second base plate is provided with a second lower connecting ear plate.

[0013] Furthermore, the connecting assembly includes a cover plate, a second upper connecting ear plate, a false bottom grid connecting ear plate, an intermediate plate, and an inter-column support connecting ear plate. The cover plate is located at the top of the movable support steel column. The second upper connecting ear plate, the intermediate plate, and the inter-column support connecting ear plate are connected sequentially from top to bottom on the lower part of the cover plate and the top side of the movable support steel column. The false bottom grid connecting ear plate is at the same height as the second upper connecting ear plate and is set at a certain angle.

[0014] Furthermore, the intercolumn support connecting lug is oriented in the same direction as the second upper connecting lug.

[0015] Furthermore, the false bottom grid includes an outer frame, a steel mesh disposed inside the outer frame and connected to the outer frame, and connecting plates at the four corners of the outer frame are connected to the movable bracket.

[0016] The beneficial effects of this invention are:

[0017] (1) It can be used for underwater vibration table tests to simulate underwater terrain, and can be quickly set up and disassembled, improving the efficiency of underwater vibration table use and avoiding waste of resources.

[0018] (2) The modular design allows for flexible assembly according to requirements, making it suitable for underwater vibration table tests of different scales. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the false bottom arrangement of the pool;

[0020] Figure 2 This is a schematic diagram of the cross-sectional layout of the false bottom of the pool;

[0021] Figure 3 This is a schematic diagram of the fixed support structure;

[0022] Figure 4 This is a schematic diagram of the horizontal movable support structure;

[0023] Figure 5 This is a schematic diagram of the movable support structure for the slope section;

[0024] Figure 6 This is a schematic diagram of the structure at the top of the movable support steel column;

[0025] Figure 7 This is a schematic diagram of a false bottom grille structure;

[0026] Figure 8 This is a schematic diagram showing the connection between the fixed bracket and the movable bracket;

[0027] The components include: 1. Fixed support steel column; 11. First base plate; 2. Fixed support steel beam; 21. First steel beam; 22. Connector; 23. Second steel beam; 3. First lower connecting ear plate; 4. First upper connecting ear plate; 5. Movable support steel column; 51. Second base plate; 52. Second lower connecting ear plate; 53. Inter-column support connecting ear plate; 54. Cover plate; 55. Second upper connecting ear plate; 56. False bottom grid connecting ear plate; 57. Intermediate plate; 6. Column top steel beam; 7. Column bottom steel beam; 8. Inter-column support; 9. Outer frame; 91. Connecting plate; 10. Steel mesh; 12. Elliptical plate; 13. Horizontal movable support; 14. Sloping movable support. Detailed Implementation

[0028] This invention provides a false bottom for underwater shaking table tests to simulate underwater topography. The technical solution of this invention will be described in detail below with reference to the accompanying drawings to make it easier to understand and master.

[0029] Example 1

[0030] refer to Figure 1-8 A simulated underwater bottom for underwater shaking table testing to simulate underwater topography includes:

[0031] Fixed bracket;

[0032] The movable support is located on both sides of the fixed support and is connected to the fixed support. The top of the movable support has a connecting component for connecting the structure.

[0033] A false bottom grille is located on top of the movable support and connected to the movable support.

[0034] The false bottom surface is fixed to the upper part of the false bottom grid.

[0035] In this embodiment, the fixed support includes a fixed support steel column 1 and a fixed support steel beam 2 connected to the upper part of the fixed support steel column 1. The bottom of the fixed support steel column 1 is provided with a first base plate 11, and the upper part of the first base plate 11 is provided with a first lower connecting ear plate 3. The first lower connecting ear plate 3 is located on both sides of the bottom of the fixed support steel column 1 and is used to connect the movable support.

[0036] Preferably, the fixed support steel column 1 is located at both ends of the fixed support steel beam 2 to support the fixed support steel beam 2.

[0037] Preferably, the first base plate 11 is rectangular, with a length of 650mm, a width of 250mm, and a thickness of 20mm, and is fixed to the embedded part of the underwater vibration table by bolts.

[0038] Preferably, the fixed support steel column 1 is made of H-beam steel with a cross-sectional dimension of H400×200×8×13 and a height of 1930mm.

[0039] In this embodiment, the fixed support steel beam 2 includes a first steel beam 21 and a second steel beam 23 arranged symmetrically, and a connector 22 located between the first steel beam 21 and the second steel beam 23 and connected to the first steel beam 21 and the second steel beam 23. The outer ends of the first steel beam 21 and the second steel beam 23 are provided with first upper connecting ear plates 4. The first upper connecting ear plates 4 and the first lower connecting ear plates 3 are located on the same side. The first upper connecting ear plates 4 and the first lower connecting ear plates 3 are combined and connected to the movable support to increase the connection strength.

[0040] Preferably, the connectors 22 are provided in a plurality of evenly distributed manner, the first steel beam 21 and the second steel beam 23 are welded together by the connectors 22, and the first steel beam 21 and the second steel beam 23 are connected to the fixed support steel column 1 by bolts.

[0041] Preferably, the first steel beam 21 and the second steel beam 23 are both made of channel steel with a cross-sectional dimension of [20 and a length of 1990mm, and the connecting piece 22 is made of channel steel with a cross-sectional dimension of [16 and a length of 400mm.

[0042] In this embodiment, the movable support includes a movable support steel column 5, a column top steel beam 6, a column bottom steel beam 7, and column supports 8 connected to the column bottom steel beam 7 and the column top steel beam 6, with the column supports 8 arranged crosswise. The column top steel beam 6 is connected to the top of the movable support steel column 5, and the column bottom steel beam 7 is connected to the bottom of the movable support steel column 5. The bottom of the movable support steel column 5 is provided with a second base plate 51, and a second lower connecting ear plate 52 is provided on the bottom side of the movable support steel column 5 and above the second base plate 51.

[0043] Preferably, the column top steel beam 6 is made of two L-shaped steels with a pad in the middle for welding connection, with elliptical holes at both ends to facilitate connection with varying lengths, and the ends are rounded to facilitate rotation.

[0044] Preferably, the column base steel beam 7 is made of two L-shaped steels with a pad in the middle welded together, and round holes at both ends.

[0045] Preferably, the inter-column support 8 is a rectangular steel plate with round holes at both ends and the ends are round to facilitate rotational connection.

[0046] Preferably, the movable support is provided in several parts, including horizontal movable support 13 and sloping movable support 14. Different combinations of different sizes and quantities can be selected and connected according to actual needs.

[0047] Preferably, the movable support steel column 5 is made of round steel pipe with a diameter of 140mm and a thickness of 8mm. The length of the movable support steel column in the horizontal part is 1880mm. In the slope part, there are 6 movable supports on each side, and the lengths of the movable support steel columns in the slope are 1580mm, 1380mm, 1180mm, 880mm, 680mm and 480mm respectively.

[0048] Preferably, the second base plate 51 is a square steel plate with a side length of 300mm and a thickness of 10mm.

[0049] Preferably, the second lower connecting ear plate 52 is a rectangular steel plate with a length of 160mm, a width of 80mm, and a thickness of 10mm. The second lower connecting ear plate 52 is provided with two bolt holes with a spacing of 90mm, which are used to connect the inter-column support 8, the column base steel beam 7, or the fixed bracket.

[0050] In this embodiment, the connecting assembly includes a cover plate 54, a second upper connecting ear plate 55, a false bottom grid connecting ear plate 56, an intermediate plate 57, and an inter-column support connecting ear plate 53. The cover plate 54 is located at the top of the movable support steel column 5. The second upper connecting ear plate 55, the intermediate plate 57, and the inter-column support connecting ear plate 53 are connected sequentially from top to bottom on the lower part of the cover plate 54 and the top side of the movable support steel column 5. The false bottom grid connecting ear plate 56 is at the same height as the second upper connecting ear plate 55 and is set at a certain angle. The second upper connecting ear plate 55 is used to connect the column top steel beam 6 or the fixed bracket, and the false bottom grid connecting ear plate 56 is used to connect the false bottom grid.

[0051] Preferably, the cover plate 54 is a circular steel plate with a diameter of 250mm and a thickness of 10mm.

[0052] In this embodiment, the inter-column support connecting lug 53 and the second upper connecting lug 55 are in the same direction and are used to connect the inter-column support 8.

[0053] Preferably, the intermediate plate 57 is located below the second upper connecting ear plate 55 and the false bottom grid connecting ear plate 56. It is a regular hexagonal steel plate with a hole in the middle. The diameter of the hole is 140mm, which facilitates fixing the second upper connecting ear plate 55, the false bottom grid connecting ear plate 56 and the inter-column support connecting ear plate 53.

[0054] In this embodiment, the false bottom grid includes an outer frame 9, a steel mesh 10 disposed inside the outer frame 9 and connected to the outer frame 9, and connecting plates 91 provided at the four corners of the outer frame 9 are connected to the movable bracket.

[0055] Preferably, the outer frame 9 is a channel steel with a cross-sectional dimension of [20 and a length of 1696mm. A circular hole with a diameter of 14mm is provided in the middle part of the outer frame 9 for connecting the steel mesh 10.

[0056] Preferably, the connecting plate 91 at the end of the outer frame 9 is a rectangular steel plate with a length of 220mm and a width of 95mm, and the direction of the connecting plate 91 is at a 45° angle to the horizontal direction.

[0057] Preferably, the steel mesh 10 is a round steel pipe with a diameter of 14mm, which is connected to the outer frame by bolts.

[0058] In use, the fixed bracket is fixed to the pre-embedded part of the underwater vibration table ground with bolts. In the connection between the fixed bracket and the movable bracket, the first upper connecting ear plate 4 and the second upper connecting ear plate 55 are connected by bolts, and the first lower connecting ear plate 3 and the second lower connecting ear plate 53 are connected by bolts through the elliptical plate 12. In the connection between the movable bracket and the false bottom grid, the false bottom grid connecting ear plate 56 and the connecting plate 91 on the outer frame 9 are connected by bolts. A false bottom surface is laid on the upper layer of the false bottom grid and fixed to the false bottom grid by binding or other methods.

[0059] The technical solutions of the present invention have been fully described above. It should be noted that the specific embodiments of the present invention are not limited to the above description. All technical solutions formed by those skilled in the art based on the spirit and essence of the present invention by adopting equivalent transformations or equivalent transformations in terms of structure, method or function fall within the protection scope of the present invention.

Claims

1. A false bottom for an underwater shaking table test to simulate underwater topography, characterized in that, include: Fixed bracket; A movable support is located on both sides of the fixed support and connected to the fixed support. The top of the movable support has a connecting component for connecting the structure. A false bottom grille, which is located on top of the movable support and connected to the movable support; A false bottom surface, which is fixed to the upper part of the false bottom grid; The fixed support includes a fixed support steel column and a fixed support steel beam connected to the upper part of the fixed support steel column. The bottom of the fixed support steel column is provided with a first base plate, and the upper part of the first base plate is provided with a first lower connecting ear plate. The first lower connecting ear plate is located on both sides of the bottom of the fixed support steel column. The movable support includes a movable support steel column, a top steel beam, a bottom steel beam, and inter-column supports connected to the bottom steel beam and the top steel beam, with the inter-column supports arranged crosswise. The top steel beam is connected to the top of the movable support steel column, and the bottom steel beam is connected to the bottom of the movable support steel column. The bottom of the movable support steel column is provided with a second base plate, and a second lower connecting ear plate is provided on the bottom side of the movable support steel column above the second base plate.

2. The false bottom of the pool used for simulating underwater topography in underwater shaking table tests according to claim 1, characterized in that, The fixed support steel beam includes a first steel beam and a second steel beam arranged symmetrically, and a connector located between the first steel beam and the second steel beam and connected to the first steel beam and the second steel beam. The outer ends of the first steel beam and the second steel beam are provided with a first upper connecting ear plate, and the first upper connecting ear plate and the first lower connecting ear plate are located on the same side.

3. The false bottom of the pool for simulating underwater topography in underwater shaking table tests according to claim 1, characterized in that, The connecting assembly includes a cover plate, a second upper connecting ear plate, a false bottom grid connecting ear plate, an intermediate plate, and an inter-column support connecting ear plate. The cover plate is located at the top of the movable support steel column. The second upper connecting ear plate, the intermediate plate, and the inter-column support connecting ear plate are connected sequentially from top to bottom on the lower part of the cover plate and the top side of the movable support steel column. The false bottom grid connecting ear plate is at the same height as the second upper connecting ear plate and is set at a certain angle.

4. The false bottom of the pool for simulating underwater topography in underwater shaking table tests according to claim 3, characterized in that, The intercolumn support connecting lug is oriented in the same direction as the second upper connecting lug.

5. The false bottom of the pool for simulating underwater topography in underwater shaking table tests according to claim 1, characterized in that, The false bottom grid includes an outer frame, a steel mesh disposed inside the outer frame and connected to the outer frame, and connecting plates at the four corners of the outer frame are connected to the movable bracket.

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