CN210712718U - Sea wall scouring damage test device for damaged expansion joint panel - Google Patents
Sea wall scouring damage test device for damaged expansion joint panel Download PDFInfo
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- CN210712718U CN210712718U CN201921404893.0U CN201921404893U CN210712718U CN 210712718 U CN210712718 U CN 210712718U CN 201921404893 U CN201921404893 U CN 201921404893U CN 210712718 U CN210712718 U CN 210712718U
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- expansion joint
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- seawall
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- 230000006378 damage Effects 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000009991 scouring Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000004576 sand Substances 0.000 claims abstract description 45
- 210000001503 joint Anatomy 0.000 claims abstract description 22
- 239000003086 colorant Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 238000013508 migration Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a damaged panel sea wall of expansion joint erodees destruction test device, it includes water tank, wave generator, dyke model and information acquisition subassembly, and wave generator, dyke model and information acquisition subassembly are arranged in the water tank, and the dyke model includes the mold box, for being used for loading the inner chamber of mold sand in the mold box, and the panel of slope is arranged to one side of mold box, and the quantity of panel is two at least, has arranged the filling block between two adjacent panels. During the test, the wave generator makes waves in the water tank, the waves act on the dike model, the filling blocks are adopted in the dike model to simulate the expansion joint damage zone of the seawall, and the migration state of sand in the seawall under the action of the waves is simulated by filling simulated sand in the dike model. The utility model discloses it is rational in infrastructure to the influence that seawall received after the expansion joint damage was studied to the dyke model after the expansion joint damage to simulation wave, but wide application in hydraulic engineering analogue test technical field.
Description
Technical Field
The utility model relates to a hydraulic engineering analogue test technical field, in particular to damaged panel seawall of expansion joint erodees failure test device.
Background
The coastline of China is as long as 1.8 km, the safety and development of cities near the coastline are seriously threatened by wind, tide and flood disasters caused by typhoon landing, and natural disasters such as typhoon storm tide and the like are effectively resisted by the sea wall, so that the life and property safety of people is guaranteed. The coastal areas are lack of clay materials, so the existing old dikes are usually made of local materials and sand is used as a diking material. However, the sand is easy to run off, and the sea wall is easy to damage and even burst when encountering typhoon.
In recent years, with the increasing investment of water conservancy construction, a series of old sea dikes are subjected to standard-reaching reinforcement engineering, however, sand is mostly adopted to increase the thickness of the dikes in clay-deficient areas, only a concrete slab is additionally arranged on the sea side to serve as a protective surface to protect the sand dikes, and a layer of geotextile is arranged between the sand and the concrete protective surface to prevent the sand from losing. On-site investigation finds that the sand seawall is damaged more seriously than the clay seawall, and even the sand seawall reinforced in recent years still can be damaged seriously. The main reason for the damage of the sandy soil sea wall reinforced by the protective surface and the geotextile is that the expansion joint damage causes the sandy soil to continuously run off from the damaged zone, so that the protective surface is empty, when typhoon arrives, huge wave force acts on the concrete panel which is empty, so that the panel is bent, broken, and the sandy soil sea wall body behind the panel is immediately washed. However, the problem of erosion damage of the seawall caused by the damage of the expansion joint of the lower seawall under the action of waves is not reported yet.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned technical problem, research wave effect down the damaged influence of back to the seawall of expansion joint, the utility model discloses the technical scheme who adopts as follows:
the utility model provides a damaged panel sea wall of expansion joint erodees destruction test device, it includes water tank, wave generator, dyke model and information acquisition subassembly are arranged in the water tank, and the dyke model includes the mold box, for being used for loading the inner chamber of mold sand in the mold box, and the panel of slope is arranged to one side of mold box, and the quantity of panel is two at least, has arranged the filling block between two adjacent panels.
Further, the information acquisition assembly comprises a water pressure sensor, and the water pressure sensor is arranged in the model box.
Furthermore, a water pressure sensor is arranged on a rear baffle of the model box, a water pressure measuring point is arranged on the panel, the water pressure measuring point is connected with the water pressure sensor through a hose, a mounting hole is formed in the panel at the water pressure measuring point, and the hose is arranged in the mounting hole.
Further, the information acquisition assembly includes a scanner.
Further, the information acquisition assembly includes a camera.
Further, the information acquisition assembly comprises a wave height meter.
Further, a wave absorption area is arranged in the water tank.
Furthermore, the top plate, the bottom plate, the rear baffle plate and the side baffle plate of the model box are all made of wood subjected to preservative treatment.
Furthermore, the sand with different particle sizes is distinguished by colors in the model sand.
Further, the wave generator is a push plate type wave maker.
Has the advantages that: during the test, the wave generator makes waves in the water tank, the waves act on the dike model, the filling blocks are adopted in the dike model to simulate the expansion joint damage zone of the seawall, and the migration state of sand in the seawall under the action of the waves is simulated by filling simulated sand in the dike model. The utility model discloses it is rational in infrastructure to the influence that seawall received after the expansion joint damage was studied to the dyke model after the expansion joint damage to simulation wave, but wide application in hydraulic engineering analogue test technical field.
Drawings
FIG. 1 is a schematic diagram of the structure of the test apparatus;
fig. 2 is a structural view of a bank model.
Detailed Description
The present invention will be further described with reference to fig. 1 to 2.
The utility model relates to an expansion joint damage panel sea wall erodees destruction test device, it includes water tank 11, wave generator 12, dyke model 13 and information acquisition subassembly, and wave generator 12, dyke model 13 and information acquisition subassembly are arranged in water tank 11, have arranged wave absorption district 18 in the water tank 11, and dyke model 13 is located between wave generator 12 and the wave absorption district 18, and wave generator 12 makes the ripples machine for the ejector pad formula.
The dike model 13 is used for simulating the shapes of different types of seawalls, water is filled in the water tank 11 to a set water level, the wave generator 12 generates waves in the water tank 11, and the waves are pushed to the dike model 13, so that different water levels and wave working conditions can be simulated.
The dike model 13 is fixed in the water tank 11 by quick setting cement or screws and leveled by a level gauge. The dike model 13 comprises a model box 14, an inner cavity for filling model sand is arranged in the model box 14, the model box 14 is an assembled sea dike model test box with variable-size expansion joint damage panels, the top plate, the bottom plate, the rear baffle and the side baffle of the model box 14 are all made of wood subjected to preservative treatment, and the wood is installed through iron nails.
One side of the model box 14 is arranged with an inclined panel simulating an inclined slope in a sea wall. The panel is made of acrylic materials, is designed to be acrylic glass with high transparency, and facilitates observation of the migration process of the molding sand in the mold box 14 under wave impact.
The quantity of panel is two at least, has arranged the stuff 19 between two adjacent panels, and the quantity of stuff 19 is a plurality of, has arranged glass between panel and the stuff 19 and glues. The filling block 19 simulates an expansion joint damage zone and is used for simulating expansion joint damage zones in different positions and different sizes, and the filling block 19 is made of an assembled variable-size acrylic material.
For example, the number of the panels is two, the panels and the side baffle plates of the model box 14 are installed through hinges or screws, and glass cement is coated at the joints between the panels and the side walls of the simulation box for water stop. If the number of panels is plural, the two outermost panels are attached to the side dams of the mold box 14 by hinges or screws, and the other panels are attached to the top and bottom plates of the mold box 14.
The information acquisition assembly includes water pressure sensors disposed in the mold box 14 that measure the wave pressure at different heights on the panel. The water pressure sensor is disposed at the back plate of the mold box 14 because it is inconvenient to directly bury the water pressure sensor in the mold box 14. The panel is provided with water pressure measuring points which are connected with a water pressure sensor through hoses, and before the test, the hoses are filled with water. The panel is provided with a mounting hole 15 formed at a water pressure measuring point, the hose is arranged in the mounting hole 15, and a gap between the outer wall of the hose and the inner wall of the mounting hole 15 is sealed by glass cement.
The information acquisition component comprises a scanner 16, the scanner 16 is a three-dimensional laser scanner, the three-dimensional laser scanner has the advantages of panoramic measurement, high-speed scanning, high-precision scanning, long-distance scanning, integrated data storage and double-shaft compensation and the like, the scanning type is a pulse distance measurement method, the field angle is 360 degrees multiplied by 270 degrees, the angular resolution is 12 degrees, the model surface precision is 2mm, the dynamic double-shaft compensation range is +/-5 degrees, the dynamic double-shaft compensation precision is 1.5 degrees, the dynamic double-shaft compensation resolution is 5 degrees, the maximum scanning speed is 50000 points/second, the laser grade is I grade, the laser color is green, and the wavelength is 532 nm. The scanner 16 scans the dam model 13 after the wave action, can obtain the three-dimensional point cloud of the dam model 13 under different working conditions, can establish the dam model 13 three-dimensional model under different working conditions based on the point cloud data, can quantitatively represent the whole process of the erosion damage of the damaged part of the dam model 13, and quantitatively analyze the influence of the expansion joint damage under different working conditions on the sand loss characteristics of the dam model 13.
The information acquisition assembly comprises a wave height gauge 17, and the wave height gauge 17 calibrates the waves generated by the wave generator 12.
The information acquisition assembly comprises a camera, the motion state and particle distribution of sand particles in the whole scouring damage process can be acquired through the camera, and the panel is designed to be transparent, so that the camera can conveniently shoot the sand migration process under the action of waves.
The sand with different grain diameters is distinguished in the model sand through colors, the sand with different grain diameters has different colors, and the sand with each grain diameter is mixed by equal mass. Through image processing, the motion trajectory, motion speed and other information of each sand particle can be analyzed.
The action of the waves on the simulated sand near the damaged zone can be divided into positive pressure generated by the waves in the ascending process and negative pressure generated by the waves in the falling process, the positive pressure pushes sand particles to a region far away from the damaged zone, the smaller the particle size is, the easier the sand particles are pushed away, and therefore the farther the sand particles are from the damaged zone, the smaller the particle size is; the negative pressure brings sand particles out of the damaged zone, the smaller the grain size of the sand particles is, the easier the sand particles are brought out, so the farther the sand particles are from the damaged zone, the larger the grain size of the sand particles is, and simulated sand with large grain size is concentrated at the position close to the damaged zone during the test.
In the test, the upper wave pressure was relatively small, the middle and lower wave pressures were relatively large, and the lower average wave pressure was greater than the middle. The sand loss of the seawall with the damaged panel expansion joint is mainly brought out by the wave pressure, so when the damaged zone is positioned at the bottom, the wave pressure is higher, and the sand loss is the largest.
The test procedure was as follows:
1, adjusting each device to an optimal operation state;
2, filling mold sand in the mold box 14, wherein the sand is determined according to a similar scale, the sand is compacted after being wetted by water, and the sand filling amount is controlled to be consistent each time during the test;
3, carrying out three-dimensional laser scanning on the filled bank model 13 to obtain three-dimensional laser scanning point cloud of the bank model 13 before wave action;
4, covering the panel, and smearing glass cement on the periphery of the panel to stop water;
5, installing a filling block 19, installing the filling block 19 at a designed damaged position to simulate a damaged band of the expansion joint, and fixing the filling block 19 by using glass cement;
6, filling water in the water tank to a set water level, opening the wave generator 12 to generate waves after the water level is stable, and simultaneously opening the camera, the wave height gauge 17 and the water pressure sensor to acquire data;
7, after the wave action is finished, opening the panel and the filling block 19, and performing three-dimensional laser scanning to obtain three-dimensional laser scanning point cloud of the wave action back dike model 13;
and 8, finishing the test, and carrying out the next group of tests again by the steps.
In step 5, the length of the breakage can be controlled by the number of the filler blocks 19, and the breakage position is set to a position close to the bottom of the mold box 14 to make the test effect remarkable.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The utility model provides a damaged panel seawall of expansion joint erodees destruction test device which characterized in that: the water tank type sand filling device comprises a water tank (11), wave generators (12), a bank model (13) and an information acquisition assembly, wherein the wave generators (12), the bank model (13) and the information acquisition assembly are arranged in the water tank (11), the bank model (13) comprises a model box (14), an inner cavity used for filling model sand is arranged in the model box (14), inclined panels are arranged on one side of the model box (14), the number of the panels is at least two, and filling blocks (19) are arranged between every two adjacent panels.
2. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the information acquisition assembly includes a water pressure sensor disposed in the mold box (14).
3. The expansion joint damage panel seawall scouring damage test device of claim 2, characterized in that: the water pressure sensor is arranged on a rear baffle of the model box (14), the panel is provided with a water pressure measuring point, the water pressure measuring point is connected with the water pressure sensor through a hose, the panel is provided with a mounting hole (15) formed in the water pressure measuring point, and the hose is arranged in the mounting hole (15).
4. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the information acquisition assembly includes a scanner (16).
5. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the information acquisition assembly includes a camera.
6. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the information acquisition assembly comprises a wave height meter (17).
7. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: a wave-absorbing area (18) is arranged in the water tank (11).
8. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the top plate, the bottom plate, the rear baffle plate and the side baffle plate of the model box (14) are all made of wood subjected to preservative treatment.
9. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the sand with different grain diameters is distinguished by colors in the model sand.
10. The expansion joint damage panel seawall scouring damage test device of claim 1, characterized in that: the wave generator (12) is a push plate type wave making machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921404893.0U CN210712718U (en) | 2019-08-27 | 2019-08-27 | Sea wall scouring damage test device for damaged expansion joint panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921404893.0U CN210712718U (en) | 2019-08-27 | 2019-08-27 | Sea wall scouring damage test device for damaged expansion joint panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210712718U true CN210712718U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921404893.0U Expired - Fee Related CN210712718U (en) | 2019-08-27 | 2019-08-27 | Sea wall scouring damage test device for damaged expansion joint panel |
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| Country | Link |
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| CN (1) | CN210712718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112295A (en) * | 2021-11-10 | 2022-03-01 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Automatic real-time wave-crossing comprehensive measuring device and measuring method thereof |
-
2019
- 2019-08-27 CN CN201921404893.0U patent/CN210712718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112295A (en) * | 2021-11-10 | 2022-03-01 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Automatic real-time wave-crossing comprehensive measuring device and measuring method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 |