A cofferdam supporting test device and method under wave load action

Abstract

The present application relates to the technical fields of cofferdam support test, and particularly discloses a cofferdam support test device under wave load, which comprises a pier column, a ring-shaped cofferdam surrounding the outside of the pier column, and a ring-shaped track sleeved outside the pier column, a cantilever beam is slidably connected to the ring-shaped track, a water wave manufacturing device is arranged at one end of the cantilever beam, a plugging and launching device is also slidably connected to the cantilever beam, a monitor is also hung on the cantilever beam, the monitor is used to monitor the leakage position of the ring-shaped cofferdam, then the plugging and launching device is controlled to move to a specified position, a plugging bag is launched to the leakage position of the ring-shaped cofferdam by the plugging and launching device, and the leakage position of the ring-shaped cofferdam is plugged by the plugging bag, so that the plugging effect of the plugging bag made of different materials on the ring-shaped cofferdam is tested. The present application has the advantages that the detection assembly can change the overall position of the displacement sensor, the orientation of the displacement sensor can be changed through the turntable, and the displacement sensor can be fine-tuned through the telescopic arm assembly, so that the special-shaped structural member can be monitored.

Description

Technical Field

[0001] This invention relates to the field of cofferdam support testing technology, and in particular to a cofferdam support testing device and method under wave load. Background Technology

[0002] A cofferdam is a temporary retaining structure built in hydraulic engineering projects to construct permanent hydraulic facilities. Its function is to prevent water and soil from entering the construction site, facilitating drainage, excavation of the foundation pit, and construction of the structure. Ensuring the stable operation of the cofferdam and preventing leakage is a key control item during construction. Cofferdams in shallow sea areas may be significantly affected by wave loads, and a search of existing technologies revealed no devices for conducting cofferdam support tests under wave loads. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a test device for cofferdam support under wave load, thereby solving the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A test device for cofferdam support under wave load includes a pier, an annular cofferdam surrounding the pier, and an annular track fitted around the pier. A cantilever beam is slidably connected to the annular track. A wave generation device is installed at one end of the cantilever beam, and a sealing and dispensing device is also slidably connected to the cantilever beam. A monitor is also suspended on the cantilever beam to monitor the leakage location of the annular cofferdam. The monitor is then controlled to move to a designated position, and sealing and dispensing devices are used to dispense sealing packages at the leakage location of the annular cofferdam. The sealing packages are used to block the leakage location of the annular cofferdam, thereby testing the sealing effect of sealing packages made of different materials on the annular cofferdam.

[0006] Preferably, the water wave generating device includes a base block, on which a first electric telescopic rod is mounted. The telescopic end of the first electric telescopic rod is fixedly connected to a bracket. A first motor is mounted on one side of the bracket, and a stirring paddle is mounted on the main shaft of the first motor.

[0007] Preferably, the sealing and dispensing device includes a sliding sleeve that slides back and forth on the cantilever beam. The lower side of the sliding sleeve is fixedly connected to a base plate via a hanger. The lower side of the base plate is slidably connected to a slide block. A translation device for driving the slide block to move is also provided on one side of the base plate. A dispensing box is installed on one side of the slide block, and the sealing package is stored in the dispensing box.

[0008] Preferably, a discharge port is provided at the bottom of one side of the feeding box, and a pusher valve is provided at the discharge port. A second electric telescopic rod is provided on the other side of the feeding box, and one end of the second electric telescopic rod extends into the feeding box and is connected to the pusher plate.

[0009] Preferably, a winch is installed on the top of the delivery box, and a fishhook is attached to one end of the winch's winding rope, with the initial position of the fishhook in the middle of the delivery box.

[0010] Preferably, the monitor is a depth camera.

[0011] The present invention also discloses a test method for cofferdam support under wave load, which uses the above-mentioned cofferdam support test device to test the cofferdam under wave load.

[0012] The advantage of this invention is that water waves are generated during the rotation of the stirring paddle, which will exert a certain load on the annular cofferdam. The speed of the stirring paddle rotation and the depth of the stirring paddle into the water will affect the size of the water waves, thereby changing the size of the load on the annular cofferdam. Thus, the influence of different water wave sizes on the annular cofferdam can be tested. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the basic structure of the present invention;

[0014] Figure 2 yes Figure 1 A schematic diagram of the structure excluding the cofferdam;

[0015] Figure 3 This is a schematic diagram of the sealing and dispensing device of the present invention;

[0016] Figure 4 This is a front view of the blocking and dispensing device;

[0017] Figure 5 This is a schematic diagram of the sealing package;

[0018] Figure 6 This is a diagram showing the connection structure between the elastic plate and the base plate;

[0019] Figure 7 This is a schematic diagram of the structure of an elastic plate in its natural state. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] Example 1

[0022] like Figure 1-3As shown, the present invention provides a cofferdam support test device under wave load, comprising a pier 100, an annular cofferdam 200 surrounding the pier 100, and an annular track 1 sleeved on the outside of the pier 100. The annular cofferdam 200 is composed of multiple sheet piles. A slider 11 is slidably connected to the annular track 1, and a traveling device is mounted on the slider. The traveling device is used to drive the slider 11 to move back and forth along the annular track 1. The traveling device is prior art and will not be described in detail here. A cantilever beam 2 is fixedly connected to one side of the slider 11. A wave generation device 3 is set at one end of the cantilever beam 2. The wave generation device 3 includes a base block 31, on which a first electric telescopic rod is mounted. 32. The telescopic end of the first electric telescopic rod 32 is fixedly connected to the bracket 33. A first motor 35 is mounted on one side of the bracket 33. A stirring paddle 34 is mounted on the main shaft of the first motor 35. The stirring paddle 34 rotates inside the bracket 33. When the first electric telescopic rod 32 drives the bracket 33 to descend to the water surface, the stirring paddle 34 will generate water waves during its rotation. The water waves will generate a certain load on the annular cofferdam 200. The speed of rotation of the stirring paddle 34 and the depth of the stirring paddle 34 into the water will affect the size of the water waves, thereby changing the size of the load on the annular cofferdam 200. This allows for testing the impact of different water wave sizes on the annular cofferdam 200. Meanwhile, to ensure stable lifting and lowering of the bracket 33, a guide rod 36 is provided on the bracket 33. The guide rod 36 slides back and forth within the guide hole of the base block 31.

[0023] A monitoring device 5, which is a depth camera, is also suspended on the cantilever beam 2. The monitoring device 5 is used to monitor the leakage location of the annular cofferdam 200, thereby testing the support effect of the annular cofferdam 200 under different wave loads.

[0024] A sealing and dispensing device 4 is also slidably connected to the cantilever beam 2. After the monitor 5 detects the leakage location of the annular cofferdam 200, the monitor 5 can control the sealing and dispensing device 4 to move directly above the leakage location. The sealing and dispensing device 4 then dispenses sealing bags 6 to the leakage location of the annular cofferdam 200. The sealing bags 6 then block the leakage location of the annular cofferdam 200, thereby testing the sealing effect of sealing bags 6 made of different materials on the annular cofferdam 200.

[0025] The sealing and dispensing device 4 includes a sliding sleeve 40, which slides reciprocally on the cantilever beam 2. A drive assembly is mounted on the sliding sleeve 40 to drive the sliding sleeve 40 to slide reciprocally on the cantilever beam 2. The drive assembly is prior art and is not shown in the figure. A base plate 41 is fixedly connected to the lower side of the sliding sleeve 40 via a hanger. A slide block 43 is slidably connected to the lower side of the base plate 41. A translation device 42 for driving the slide block 43 to move is also provided on one side of the base plate 41. The translation device 42 is prior art and will not be described in detail here. A dispensing box 45 is mounted on one side of the slide block 43, and the sealing package 6 is stored in the dispensing box 45. A discharge port 48 is provided at the bottom of one side of the dispensing box 45, and a pusher valve 49 is provided at the discharge port 48. A second electric telescopic rod 46 is provided on the other side of the dispensing box 45, one end of which extends into the dispensing box 45 and is connected to a pusher plate 47. When feeding is required, the push plate 47 is moved by the second electric telescopic rod 46, thereby pushing the sealing bag 6 out of the discharge port 48. Under the action of gravity, the sealing bag 6 falls down. The push plate valve 49 is used to control the opening and closing of the discharge port 48, and the sequence of use with the second electric telescopic rod 46 is the existing technology, which will not be described in detail here.

[0026] Example 2

[0027] In embodiment 1, the sealing package 6 is configured as follows: the sealing package 6 includes a base plate 61, and an elastic plate 62 is hinged to one side of the base plate 61 via a spring hinge 60. The elastic plate 62 itself is elastic. See [link to documentation]. Figure 7 As shown, the elastic plate is in a 62-position arc state under natural conditions. (See attached image) Figure 6 As shown, in this embodiment, first pull ropes 64 are provided at both ends of the elastic plate 62. By tightening the first pull ropes 64, the elastic plate 62 is pulled into a "C" shape. Simultaneously, in its natural state, the spring hinge 60 maintains a 180-degree angle between the elastic plate 62 and the base plate 61. In this embodiment, a second pull rope 63 is provided between the elastic plate 62 and the base plate 61. Under the action of the second pull rope 63, the included angle between the elastic plate 62 and the base plate 61 is maintained at 90 degrees. The sealing package 6 also includes a barrel-shaped protective film 65. Both the elastic plate 62 and the base plate 61 are wrapped in the protective film 65, and the protective film 65 contains sealing material. In this embodiment, the sealing material is one of cotton and linen, cotton wadding mixed with mortar, or butter. Using different sealing materials can also test the sealing effect of different sealing materials on the annular cofferdam 200.

[0028] In this embodiment, a winch 44 is mounted on the top of the feeding box 45. A fishhook 412 is attached to one end of the winding rope 410 of the winch 44, and the initial position of the fishhook 412 is in the middle of the feeding box 45. During the feeding process, when the push plate 47 pushes the sealing bag 6 to the discharge port 48, under the action of the squeezing force, the hook of the fishhook 412 is inserted into the protective membrane 65. As the sealing bag 6 falls due to gravity, the fishhook 412 falls with the sealing bag 6, and the winch simultaneously releases and retracts the winding rope 410. The length of the release and retraction rope is determined according to the depth of the leakage location, and the depth of the leakage location can be directly determined by a depth camera. To ensure the stable descent of the sealing bag 6, a counterweight 69 is provided on the underside of the base plate 61. An installation groove 610 is provided on the upper side of the counterweight 69, and a second motor is installed in the installation groove 610. A gear 611 is installed on the main shaft of the second motor. An arc-shaped sliding hole is provided on the base plate 61, and an arc-shaped sliding rod 66 is slidably connected in the arc-shaped sliding hole. An arc-shaped rack is installed on one side of the arc-shaped sliding rod 66, and the arc-shaped rack meshes with the gear 611. A first cutter 67 and a second cutter 68 are installed on the arc-shaped sliding rod 66. The second motor drives the gear 611 to rotate, which in turn rotates the arc-shaped sliding rod 66, allowing it to be inserted into the arc-shaped sliding hole above the base plate 61. The arc-shaped sliding rod 66 connects the counterweight to the base plate 61, thus enabling the sealing bag 6 to descend stably. When the descent reaches the depth of the leak location, the winding rope 410 is just taut. At this point, the sealing bag 6, under its own weight and inertia, will tend to move downwards, while the winding rope 410 and the hook 412 cannot descend further, and the sealing bag 6 continues to descend. As the water moves downwards, the hook 412 cuts open the protective membrane 65. At this time, the second motor drives the arc-shaped sliding rod 66 to move, thus retracting the arc-shaped sliding rod 66 into the mounting groove 610. This causes the counterweight 69 to separate from the base plate 61. During the process of the arc-shaped sliding rod 66 retracting into the mounting groove 610, the first cutter 67 and the second cutter 68 cut the first pull rope 64 and the second pull rope 63 respectively. As a result, the elastic plate 62 returns to its initial state without the constraint of the first pull rope, and the angle between the elastic plate 62 and the base plate 61 becomes 180 degrees. In this way, under the action of water flow, the sealing material is squeezed into the leakage location through the elastic plate 62 and the base plate 61, preventing the sealing material from spreading in all directions, thereby further enhancing the sealing effect of the annular cofferdam 200.

[0029] Example 3

[0030] The present invention also discloses a test method for cofferdam support under wave load, which uses the cofferdam support test device in Example 1 or Example 2 to test the cofferdam under wave load.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test device for cofferdam support under wave load, characterized in that: The system includes piers, a ring-shaped cofferdam surrounding the piers, and a ring-shaped track fitted around the piers. A cantilever beam is slidably connected to the ring track. A water wave generating device is installed at one end of the cantilever beam. A sealing and dispensing device is also slidably connected to the cantilever beam. A monitor is also suspended on the cantilever beam. The monitor is used to monitor the leakage location of the ring-shaped cofferdam. Then, the sealing and dispensing device is controlled to move to a designated position. The sealing and dispensing device is used to dispense sealing bags at the leakage location of the ring-shaped cofferdam. The sealing bags are used to block the leakage location of the ring-shaped cofferdam, thereby testing the sealing effect of sealing bags made of different materials on the ring-shaped cofferdam. The water wave generating device includes a base block, on which a first electric telescopic rod is mounted. The telescopic end of the first electric telescopic rod is fixedly connected to a bracket. A first motor is mounted on one side of the bracket, and a stirring paddle is mounted on the main shaft of the first motor. The sealing and dispensing device includes a sliding sleeve that slides back and forth on the cantilever beam. A base plate is fixedly connected to the lower side of the sliding sleeve via a hanger. A slide block is slidably connected to the lower side of the base plate. A translation device for driving the slide block to move is also provided on one side of the base plate. A dispensing box is installed on one side of the slide block, and the sealing package is stored in the dispensing box. The bottom of one side of the feeding box is provided with a discharge port, and a pusher valve is provided at the discharge port. The other side of the feeding box is provided with a second electric telescopic rod, one end of which extends into the feeding box and is connected to the pusher plate. The top of the delivery box is equipped with a winch, and a fishhook is attached to one end of the winch's winding rope. The initial position of the fishhook is in the middle of the delivery box.

2. The test device for cofferdam support under wave load according to claim 1, characterized in that: The monitor is a depth camera.

3. A test method for cofferdam support under wave load, characterized in that: The cofferdam support test device as described in any one of claims 1-2 was used to test the cofferdam under wave load.

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