A rolling waterproof system for an underwater shaking table

Abstract

The present invention belongs to the technical field of shaking table test for civil engineering, water conservancy and other engineering structures, and particularly relates to a rolling waterproof system for an underwater shaking table; there is provided a rolling waterproof system for an underwater shaking table, the waterproof system covers the rolling system, and the rolling system includes a support assembly. The present invention provides a new rolling waterproof system for an underwater shaking table. Using the support assembly of the rolling system to support the waterproof system can reduce the load on the waterproof material, and to a great extent reduce the disturbance of the shaking table movement to the water body; on this basis, the use of a waterproof system composed of double-layer waterproof cloth has a more significant effect. A drain pipe is arranged between the two layers of waterproof cloth to effectively discharge the water body that penetrates into the interior of the waterproof structure quickly, and it is not necessary to inflate the interior of the waterproof structure; in addition, the waterproof system has a simple design, good stability, and has a good application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of shaking table test for civil engineering, water conservancy and other engineering structures, and particularly relates to a rolling waterproof system for an underwater shaking table. Background Art

[0002] Seismic simulation shaking tables are widely used to test the response characteristics and failure mechanisms of structures under earthquake actions. For water-related engineering structures such as bridges, underwater tunnels, and offshore wind farms, seismic simulation shaking tables (array) also need to simulate the seismic-hydrodynamic coupling fields in which these structures are located. To ensure the normal operation of the seismic simulation shaking table in a water and dynamic water environment, it is necessary to ensure the effective waterproofing of precision equipment such as the shaking table tabletop, exciters, and servo valves. At the same time, it is also necessary to minimize the disturbance of the waterproof measures to the water body during the test.

[0003] Currently, existing shaking tables (array) use large exciters to push the shaking table body. The large exciters are arranged between the shaking table tabletop and the periphery of the shaking table and the foundation. Therefore, the gap between the shaking table tabletop and the surrounding foundation of the shaking table is very large, which poses a great challenge to the waterproofing of the shaking table. Existing waterproof technical solutions generally use airbags or flexible and rigid waterproof belts (cloth, plates) with different shapes and layouts to achieve. However, the airbags and waterproof belts in the above technical solutions not only need to withstand hydrostatic pressure but also need to bear the pressure when the water body moves. Therefore, the waterproof materials need to have good stretchability, wear resistance, and waterproof ability. In addition, the above technical solutions cannot effectively eliminate the disturbance of the water body caused by the deformation of the waterproof airbag and the movement of the waterproof belt during the shaking table test, reducing the accuracy of the simulation of the actual seismic-water movement coupling field and even leading to the failure of the test. Therefore, there is an urgent need to propose an underwater shaking table waterproof system that can not only ensure good waterproof effect but also effectively reduce the disturbance to the water body. Summary of the Invention

[0004] In view of the above problems, the present invention provides a new rolling waterproof system for an underwater shaking table. This system can meet the waterproof requirements of a large three-dimensional six-degree-of-freedom underwater shaking table, and at the same time greatly reduces the influence of water body disturbance on the simulation accuracy of the seismic-water vibration coupling field.

[0005] The specific technical solution of the present invention is as follows:

[0006] The present invention provides a rolling waterproof system for an underwater shaking table, including a rolling system and a waterproof system located between the shaking table tabletop and the surrounding foundation of the shaking table. The waterproof system covers the rolling system; the rolling system includes a support component, one side of the support component is detachably connected to the shaking table tabletop, and the other side is rollingly connected to the surrounding foundation of the shaking table.

[0007] Further improvement: The support assembly includes several steel cover plates, and each of the steel cover plates is respectively arranged in each direction of the vibrating table surface; the rolling system further includes several universal wheels and telescopic sleeves. The universal wheels are arranged on the lower end surface of the steel cover plates and can roll on the foundation around the vibrating table, and the telescopic sleeves are connected to the corresponding two steel cover plates.

[0008] Further improvement: The waterproof system includes a lower waterproof cloth, an upper waterproof cloth, an annular flexible plate, and a drain pipe. The lower end surface of the annular flexible plate is in contact with the steel cover plate. The lower waterproof cloth is bonded to the annular flexible plate. The upper waterproof cloth is arranged above the lower waterproof cloth, and the drain pipe is arranged between the upper waterproof cloth and the lower waterproof cloth.

[0009] Further improvement: Three steel cover plates are respectively arranged in the four directions of the vibrating table surface. The lengths of the three steel cover plates are adapted to the length of the vibrating table surface, and the adjacent two steel cover plates in the adjacent two directions are connected by the telescopic sleeves.

[0010] Further improvement: There are multiple telescopic sleeves between the adjacent two steel cover plates, which are distributed in an array, and the angle between each telescopic sleeve and the steel cover plate is 45 degrees.

[0011] Further improvement: The universal wheels roll on the rolling steel plates on the foundation around the vibrating table, and the rolling steel plates are arranged in a ring along the foundation around the vibrating table.

[0012] Further improvement: The drain pipe is arranged on one side of the array formed by the telescopic sleeves; the annular flexible plate covers the gap between the vibrating table surface and the foundation around the vibrating table surface, and there are 4 drain ports on the annular flexible plate. Each of the drain ports is arranged opposite to and communicated with each drain pipe.

[0013] Further improvement: A lubricating oil layer is arranged between the upper waterproof cloth and the lower waterproof cloth;

[0014] Preferably, the upper waterproof cloth and the lower waterproof cloth are respectively pressed by waterproof steel rings, and the two ends of the upper waterproof cloth and the lower waterproof cloth are respectively anchored on the steel plate of the vibrating table surface and the steel plate of the foundation around the vibrating table.

[0015] Further improvement: Horizontal exciters are arranged between the vibrating table surface and the foundation around the vibrating table, and several vertical exciters are arranged at the bottom of the vibrating table surface body.

[0016] Preferably, the number of horizontal exciters on the vibrating table surface is 8, and the number of vertical exciters is 4.

[0017] Further improvement: The shape of the vibrating table surface is circular, rectangular or square.

[0018] Beneficial effects achieved by the present invention:

[0019] The present invention provides a new rolling waterproof system for an underwater vibrating table. Using the support components of the rolling system to support the waterproof system can reduce the load on the waterproof material, and to a great extent reduce the disturbance of the vibrating table movement to the water body; on this basis, using a waterproof system composed of double-layer waterproof cloth has a more significant effect. A drain pipe is arranged between the two layers of waterproof cloth to effectively discharge the water body that penetrates into the interior of the waterproof structure quickly, and it is not necessary to inflate the interior of the waterproof structure; in addition, this waterproof system has a simple design, good stability, and has a good application prospect. Description of the drawings

[0020] Figure 1 is a panoramic overhead view of the underwater vibrating table system in the present invention;

[0021] Figure 2 is a partial overhead view of the underwater vibrating table system in the present invention;

[0022] Figure 3 is a schematic cross-sectional structure view of the underwater vibrating table system in the present invention;

[0023] Figures 4 - 5 is a partial cross-sectional structure view of the underwater vibrating table system in the present invention;

[0024] Figure 6 is a schematic structure view of the rolling system in the present invention;

[0025] Figure 7 is a schematic structure view of the waterproof system in the present invention.

[0026] Reference numerals: 1 - vibrating table surface; 2 - upper waterproof cloth; 3 - steel plate; 4 - test body; 5 - test water body; 6 - enclosure of the underwater vibrating table test system; 7 - circular flexible plate; 8 - telescopic sleeve; 9 - steel cover plate; 10 - foundation around the vibrating table; 11 - drain port; 12 - universal wheel; 13 - rolling steel plate; 14 - exciter; 15 - drain pipe; 16 - lower waterproof cloth Detailed implementation manners

[0027] The present invention will be further described below in conjunction with the drawings and embodiments. The following embodiments are only used to explain the content of the present invention and are not used to limit the protection scope of the present invention.

[0028] As Figure 1 shown in the panoramic overhead view, using the rolling waterproof system of the present invention for testing, taking the test body 4 as an example of an offshore wind turbine, the specific rolling waterproof system for the underwater vibrating table is as follows:

[0029] As Figures 2 - 7 shown, it is located between the vibration table surface 1 and the peripheral foundation 10 of the vibration table, and mainly includes a rolling system and a waterproof system;

[0030] The rolling system includes a steel cover plate 9, a universal wheel 12 and a telescopic sleeve 8. First, in the horizontal movement X and Y directions of the vibration table surface, there are 6 steel cover plates each. The steel cover plate 9 is connected to the vibration table surface 1. Relative movement can occur between two adjacent steel cover plates. The other end of the steel cover plate is a universal wheel 12, and the universal wheel can move freely on the rolling steel plate 13 on the peripheral foundation of the vibration table. The rolling steel plate is arranged along the foundation of the vibration table, which can avoid damage to the concrete foundation caused by the rolling of the universal wheel. Secondly, in the 45° direction of the horizontal X and Y movements of the vibration table, the telescopic sleeve 8 can be used to connect two steel cover plates. This structural method can avoid the mutual extrusion and damage of the two steel cover plates in the X and Y directions due to the movement of the vibration table, and also prevent the movement amplitude in this area from becoming larger due to the movement of the vibration table, effectively reducing the disturbance to the water body.

[0031] The waterproof system includes an annular flexible plate 7, a lower waterproof cloth 16, an upper waterproof cloth 2, and a drain pipe 15; the lower waterproof cloth 16 and the annular flexible plate 7 are bonded together to prevent the lower waterproof cloth from directly contacting the steel cover plate 9 of the rolling system, thus playing a role in protecting the waterproof cloth. Lubricating oil (i.e., lubricating oil layer) is fully coated between the upper waterproof cloth 2 and the lower waterproof cloth 16 to reduce the friction between the upper and lower waterproof layers. The upper and lower waterproof cloths are respectively pressed and anchored on the vibration table surface 1 and the steel plate 3 of the peripheral foundation of the vibration table by waterproof steel frames / rings. A drain pipe 15 is arranged between the upper and lower waterproof cloths, and the drain pipe is arranged beside the telescopic pipe array of the rolling system. When the water that penetrates into the middle of the waterproof cloth reaches a certain level, part of the water can be discharged through the drain port on the annular flexible plate 7 into the drain pipe and then discharged from the drain pipe.

[0032] In this embodiment, a horizontal vibrator 14 is arranged between the vibration table surface 1 and the peripheral foundation 10 of the vibration table, and a number of vertical vibrators 14 are arranged at the bottom of the table body of the vibration table surface 1.

[0033] In this embodiment, the vibration table surface 1 is circular, rectangular or square.

[0034] In this embodiment, when the vibration table surface is square, the size is 6.0m × 6.0m, the load is 100t, the working water depth is 3.0m, the maximum horizontal and vertical strokes are 0.3m; the number of horizontal vibrators is 8, and the number of vertical vibrators is 4; the gap between the concrete foundation 10 and the vibration table body is 2.0m.

[0035] During the operation of the underwater shaking table system, the shaking table body 1 drives the rolling waterproof system to move freely on the rolling steel plate 13. The steel cover plate and the telescopic sleeve greatly reduce the disturbance to the water body and also prevent large deformations of the waterproof materials. The waterproof system covering the rolling system uses flexible ring-shaped materials and lubricating oil to protect the waterproof materials. In addition, the drain pipe arranged between the upper and lower waterproof cloths can drain the water that penetrates into the waterproof cloths. Therefore, the rolling waterproof system of the present invention can not only ensure the true reproduction of the earthquake-hydrodynamic coupling field, but also has excellent waterproof effects.

[0036] Although this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or on the scope of what can be claimed, but rather as descriptions of features that can make a particular implementation of a particular invention specific. The specific features described in this specification in the context of separate implementations can also be implemented in combination with a single implementation. Conversely, the various features described in the context of a single implementation can also be implemented independently in multiple implementations, or in any suitable sub-combination. In addition, although the features may be described above as acting in combination and even initially claimed as such, one or more features from the claimed combination can in some cases be removed from the combination, and the claimed combination can be directed to a sub-combination or a variation of a sub-combination.

[0037] Specific implementations of the subject matter have been described. Other implementations are within the scope of the following claims. For example, the acts recited in the claims can be performed in a different order and still achieve the desired result. As an example, in order to achieve the desired result, the processes described in the figures do not necessarily require the particular order or sequential order shown. In certain implementations, multitasking and parallel processing can be advantageous.

Claims

1. A rolling waterproof system for an underwater shaking table, characterized in that, it includes a rolling system and a waterproof system located between the shaking table surface (1) and the shaking table peripheral foundation (10), and the waterproof system covers the rolling system; the rolling system includes a support assembly, one side of the support assembly is detachably connected to the shaking table surface (1), and the other side is in rolling connection with the shaking table peripheral foundation (10); the support assembly includes a number of steel cover plates (9), and each of the steel cover plates (9) is respectively arranged in each direction of the shaking table surface (1); the rolling system further includes a number of universal wheels (12) and telescopic sleeves (8), the universal wheels (12) are arranged on the lower end surface of the steel cover plates (9) and can roll on the shaking table peripheral foundation (10), and the telescopic sleeves (8) are connected to the corresponding two steel cover plates (9); the waterproof system includes a lower waterproof cloth (16), an upper waterproof cloth (2), an annular flexible plate (7) and a drain pipe (15), the lower end surface of the annular flexible plate (7) is in contact with the steel cover plate (9), the lower waterproof cloth (16) is bonded to the annular flexible plate (7), the upper waterproof cloth (2) is arranged above the lower waterproof cloth (16), and the drain pipe (15) is arranged between the upper waterproof cloth (2) and the lower waterproof cloth (16); three steel cover plates (9) are respectively arranged in the four directions of the shaking table surface (1), the lengths of the three steel cover plates (9) are adapted to the length of the shaking table surface (1), and adjacent two steel cover plates (9) in adjacent two directions are connected by the telescopic sleeve (8); the upper waterproof cloth (2) and the lower waterproof cloth (16) are respectively pressed by waterproof steel rings, and the two ends of the upper waterproof cloth (2) and the lower waterproof cloth (16) are respectively anchored on the steel plate (3) of the shaking table surface (1) and the steel plate (3) of the shaking table peripheral foundation (10).

2. The rolling waterproof system for an underwater shaking table according to claim 1, characterized in that, a plurality of telescopic sleeves (8) are arranged between adjacent two steel cover plates (9), and are arranged in an array, and the angle between each telescopic sleeve (8) and the steel cover plate (9) is 45 degrees.

3. The rolling waterproof system for an underwater shaking table according to claim 1, characterized in that, the universal wheels (12) roll on the rolling steel plate (13) of the shaking table peripheral foundation (10), and the rolling steel plate (13) is arranged in a ring along the shaking table peripheral foundation (10).

4. The rolling waterproof system for an underwater shaking table according to claim 2, characterized in that, the drain pipe (15) is arranged on one side of the array formed by the telescopic sleeves (8); the annular flexible plate (7) covers the gap between the shaking table surface (1) and the shaking table peripheral foundation (10), and 4 drain openings (11) are arranged on the annular flexible plate (7), and each of the drain openings (11) is arranged opposite to and communicated with each drain pipe (15).

5. The rolling waterproof system for an underwater shaking table according to claim 1, characterized in that, A lubricating oil layer is provided between the upper waterproof cloth (2) and the lower waterproof cloth (16).

6. The rolling waterproof system for an underwater shaking table according to claim 1, characterized in that, a horizontally arranged vibrator (14) is arranged between the shaking table surface (1) and the shaking table peripheral foundation (10), and a plurality of vertically arranged vibrators (14) are arranged at the bottom of the shaking table surface (1) body.

7. The rolling waterproof system for an underwater shaking table according to claim 6, characterized in that, the number of horizontal vibrators on the shaking table surface (1) is 8, and the number of vertical vibrators is 4.

8. The rolling waterproof system for an underwater shaking table according to claim 1, characterized in that, the shape of the shaking table surface (1) is circular, rectangular or square.

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