CN216050582U - Support for testing pool hydrodynamic parameters of underwater vibration table - Google Patents
Support for testing pool hydrodynamic parameters of underwater vibration table Download PDFInfo
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- CN216050582U CN216050582U CN202121858805.1U CN202121858805U CN216050582U CN 216050582 U CN216050582 U CN 216050582U CN 202121858805 U CN202121858805 U CN 202121858805U CN 216050582 U CN216050582 U CN 216050582U
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Abstract
The utility model discloses a support for testing hydrodynamic parameters of a pool of an underwater vibrating table, which comprises a supporting steel frame device and an instrument clamping device, wherein the supporting steel frame device is installed on a side wall of the pool of the underwater vibrating table for simulating an earthquake, the instrument clamping device is fixed on the supporting steel frame device, the instrument clamping device comprises a middle vertical rod, a plurality of transverse rods and a plurality of movable vertical rods, the transverse rods are fixedly connected with the upper end and the lower end of the middle vertical rod, and the movable vertical rods are connected with the transverse rods through fixed bayonets and hand-screwed bolts. The utility model has safe and reasonable structure and accurate measurement data, is suitable for the conditions of different water depths of the water pool, and can effectively solve the problem that the hydrodynamic parameters of the water pool are inconvenient to observe when a large underwater vibration table is subjected to a water test.
Description
Technical Field
The utility model relates to the technical field of testing of underwater vibration tables in civil engineering, water conservancy and oceans, in particular to a support for testing hydrodynamic parameters of a pool of the underwater vibration table.
Background
In recent years, with the continuous deepening of fluid-solid coupling research and the continuous increase of damage phenomena of wading structure engineering in the earthquake process, in order to research earthquake-water body coupling excitation mechanisms and earthquake motion response rules of structures, large-scale earthquake simulating underwater vibration tables are built in parts of colleges and universities or scientific research units in China. When an earthquake simulation experiment of wading engineering is carried out, hydrodynamic parameters of a water body in a pool, such as water depth, hydrodynamic pressure, water body flow velocity and the like, need to be monitored; however, because the span of the underwater vibrating table pool is large, the static water depth in the pool can be adjusted according to the test working condition, and therefore, great difficulty is caused to the installation of the experiment monitoring instrument.
In the process of measuring the pool fluid dynamic parameters of the simulated earthquake underwater vibrating table, if an experimental instrument is fixed through a support and then directly placed in a pool, the flow field of the pool is affected, and experimental errors are formed, so that the accuracy and the reliability of data are affected. The prior patent, such as a bracket of a current meter lever of chinese utility model CN201820821674.1, discloses that when the bracket is used, the current meter is put into the target water area together with the bracket, the longitudinal bubble level gauge and the transverse bubble level gauge on the bracket base are observed, the elongation of the movable bracket lever is adjusted, the current meter can start to work and collect data, and the measurement work of different water areas is satisfied; chinese utility model CN201720931727.0 an average flow velocity test support, including the support base to and the required current meter of velocity of flow test and the required sonar of depth of water test, the base is fixed in the bottom of river course, channel for the current velocity test support, but the average flow velocity automatic measure of wide application in river course, channel has saved the manpower, easily realizes automatic monitoring. In the above patents, the experimental apparatus and the bracket are required to be placed into the target water area, and the placement of the bracket into the water area may affect the fluid dynamics, resulting in deviation of the measurement result.
Therefore, the support suitable for testing the hydrodynamic parameters of the pool of the large underwater vibration table needs to be designed, the support can be freely installed at different positions of the pool, the measurement precision is improved, and different experimental instruments are installed according to different experimental requirements to monitor the hydrodynamic parameters of the pool.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the underwater vibration table pool fluid dynamic parameter simulator which can effectively solve the problem that the fluid dynamic parameters of the underwater vibration table pool for simulating the earthquake are difficult to monitor, and has the advantages of safe and simple structure, easy processing and manufacturing and strong applicability.
The utility model is realized by adopting the following technical scheme:
a support for testing hydrodynamic parameters of a pool of an underwater vibration table comprises a supporting steel frame device and an instrument clamping device;
the steel frame supporting device comprises a cross beam, two horizontal short beams, two vertical beams and a steel cable, wherein the middle parts of the horizontal short beams are respectively and fixedly connected with the two ends of the cross beam, the bottom ends of the vertical beams are respectively and orthogonally connected with the end parts of the cross beam and the middle parts of the horizontal short beams, and the steel cable is respectively connected with the bottom ends of the cross beam and the vertical beams through the upper ends of the vertical beams;
the instrument clamping device comprises a middle vertical rod, a plurality of cross rods and a plurality of movable vertical rods, the cross rods are fixedly connected with the upper end and the lower end of the middle vertical rod, and the movable vertical rods are connected with the cross rods through fixed bayonets and hand-screwed bolts.
The supporting steel frame device is arranged on the wall of the pool of the underwater vibration table for simulating earthquake, so that a support for testing the hydrodynamic parameters of the pool of the underwater vibration table can span the whole pool and can be freely arranged at different positions of the pool; simultaneously, the instrument clamping device is installed on the bottom of the cross beam of the supporting steel frame device, different experimental instruments are bound at the bottom of the movable vertical rod of the instrument clamping device, and the device can be suitable for different water depth conditions of the water pool so as to monitor the hydrodynamic parameters of the water pool according to different experimental requirements.
Preferably, the outer side of the bottom end of the vertical beam is provided with a first hanging ring, the inner side and the outer side of the upper end of the vertical beam are provided with second hanging rings, and the upper side of the position away from the end 1/3 of the cross beam is provided with a third hanging ring.
Preferably, the steel cable passes through the second hanging ring and is respectively connected with the first hanging ring and the third hanging ring. The lifting ring is used for fixing the position of the steel cable.
Preferably, a cable tensioner is mounted on the end of the cable adjacent to the first eye. The cable tensioner is used to control the cable length to prevent the beam from deforming vertically.
Preferably, an inclined support is arranged between the horizontal short beam and the vertical beam. The inclined supports are used for fixing the horizontal short beams and the vertical beams.
Preferably, the instrument holding device is connected to the beam bottom by a G-clamp. The instrument clamping device bound with the experimental instrument is fixed at a specific position of the cross beam through the G-shaped clamp.
Preferably, a nut is welded on the inner side of the fixed bayonet, and the inner diameter of the nut is matched with the outer diameter of the hand-screwed bolt. The movable vertical rod bound with the experimental instrument is fixed with the cross rod through the fixed bayonet and the hand-screwed bolt.
Preferably, the adjacent cross rods are respectively in an equidistant array by taking the upper end and the lower end of the middle vertical rod as the center. More specifically, the crossbars are at 120 ° angles.
In summary, the utility model has the following beneficial effects:
(1) the support designed by the utility model can span the whole pool, can measure the water flow parameters of a specific position, can be freely installed at different positions of the pool according to different experimental requirements, moves different experimental instruments tied at the bottom of the vertical rod to monitor the water depth, the water flow velocity, the hydrodynamic pressure and other pool hydrodynamic parameters, and then is hoisted to different positions of the pool wall to measure the water flow parameters of the specific position, thereby improving the measurement accuracy.
(2) The bracket designed by the utility model can be suitable for the conditions of different water depths of the pool, different experimental instruments are installed to monitor the hydrodynamic parameters of the pool according to different experimental requirements, the positions of the experimental instruments can be controlled by adjusting the positions of the instrument clamping devices and bidirectionally adjusting the movable vertical rods, and the bracket is suitable for different water depths and is suitable for various data acquisition requirements.
(3) The bracket designed by the utility model has accurate measurement data, and the bracket device realizes that only the experimental instrument contacts the fluid in the water pool, and the bracket does not reach the water pool, thereby reducing the influence of the bracket entering water on the flow field of the fluid in the water pool in the traditional work and ensuring the precision and reliability of experimental data acquisition.
Drawings
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic end perspective view of the present invention;
FIG. 3 is a perspective view of the instrument holder of the present invention;
FIG. 4 is a schematic view of a three-dimensional structure of the junction between the instrument holder and the support steel frame;
FIG. 5 is a schematic perspective view of the fixing bayonet and the hand-screwed bolt of the present invention;
FIG. 6 is a cloud graph of stress calculated using stateful finite elements in accordance with the present invention;
FIG. 7 is a cloud graph of vertical displacement calculated using state finite elements in accordance with the present invention.
Labeled as: 1. a cross beam; 2. a horizontal short beam; 3. erecting a beam; 4. obliquely supporting; 5. a first hanging ring; 6. a second hoisting ring; 7. a third hoisting ring; 8. a wire rope tensioner; 9. a steel cord; 10. a middle vertical bar; 11. a cross bar; 12. moving the vertical rod; 13. fixing the bayonet; 14. screwing the bolt by hand; 15. a G-shaped clamp; 16. the side wall of the water tank.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1 to 5, the present embodiment provides a support for testing hydrodynamic parameters of a pool of an underwater vibration table, which includes a support steel frame device and an instrument clamping device; the supporting steel frame device comprises a cross beam 1, two horizontal short beams 2 and two vertical beams 3, the middle parts of the horizontal short beams 2 are respectively and fixedly connected with two ends of the cross beam 1, the bottom ends of the vertical beams 3 are respectively and orthogonally connected with the end parts of the cross beam 1 and the middle parts of the horizontal short beams 2, and the steel cables 9 are respectively connected with the bottom ends of the cross beam 1 and the vertical beams 3 through the top ends of the vertical beams 3; the instrument clamping device comprises a middle vertical rod 10, a plurality of cross rods 11 and a plurality of movable vertical rods 12, wherein the cross rods 11 are fixedly connected with the upper end and the lower end of the middle vertical rod 10, and the movable vertical rods 12 are connected with the cross rods 11 through fixed bayonets 13 and hand-screwed bolts 14.
The outer side of the bottom end of the vertical beam 3 is provided with a first lifting ring 5, the inner side and the outer side of the upper end of the vertical beam 3 are provided with second lifting rings 6, and a third lifting ring 7 is arranged at the upper side of the position 1/3 away from the end part of the cross beam 1.
The steel cable 9 penetrates through the second hanging ring 6 to be connected with the first hanging ring 5 and the third hanging ring 7 respectively.
And a steel cable tensioner 8 is arranged at the end of the steel cable 9 close to the first lifting ring 5.
And an inclined support 4 is arranged between the horizontal short beam 2 and the vertical beam 3.
The instrument clamping device is fixedly connected with the bottom of the cross beam 1 through a G-shaped clamp 15.
And nuts are welded on the inner sides of the fixed bayonets 13, and the inner diameter of each nut is matched with the outer diameter of the hand-screwed bolt 14.
The adjacent cross bars 11 are respectively in an equidistant array by taking the upper end and the lower end of the middle vertical bar 10 as the center.
In this embodiment 1, the cross beam 1, the horizontal short beam 2, and the vertical beam 3 all adopt H-shaped steel with a cross-sectional dimension of 150mm × 100mm (height × width), wherein the length of the cross beam 1 is 20.9m, and the lengths of the horizontal short beam 2 and the vertical beam 3 are both 1.5 m; the upper edge of the middle part of the horizontal short beam 2 is welded with the lower edge of the end part of the cross beam 1, and the inner side surface of the lower end of the vertical beam 3 is welded with the outer side of the middle part of the horizontal short beam 2 and the end part of the cross beam 1.
In this embodiment 1, the cross-sectional dimension of the diagonal brace 4 is 50mm × 50mm, the length of the diagonal brace is 1.3m, two ends of the diagonal brace 4 are respectively welded to the horizontal short beam 2 and the vertical beam 3, and an included angle of 60 degrees is formed between the diagonal brace 4 and the horizontal short beam 2.
In this embodiment 1, the first hanging ring 5 is a welding hanging ring capable of bearing 2 tons and is welded to the outer side of the lower end of the vertical beam 3; the second hanging ring 6 is a welding hanging ring capable of bearing 1 ton and is welded on the inner side and the outer side of the upper end of the vertical beam 3; but third rings 7 chose for use the welding rings of 2 tons of bearing, weld in 1 upside of crossbeam 1 apart from 1 tip 6m position of crossbeam.
In this embodiment 1, the middle vertical bar 10, the cross bar 11, and the movable vertical bar 12 are aluminum alloy square tubes with cross-sectional dimensions of 20mm × 20mm and a thickness of 2mm, the middle vertical bar 10 is 20cm long, the cross bar 11 is 30cm long, and the movable vertical bar 12 is 80cm long; the cross rod 11 and the middle vertical rod 10 are fixed in a welding mode.
When the device is used, a specific experimental instrument is selected according to experimental requirements, the experimental instrument is bound at the lower end of the movable vertical rod 12 through a nylon cable tie, the reasonable position of the movable vertical rod 12 is determined according to the experimental requirements and the experimental working condition water depth, and then the movable vertical rod 12 bound with the experimental instrument is fixed with the cross rod 11 through the fixed bayonet 13 and the hand-screwed bolt 14; fixing an instrument clamping device bound with the experimental instrument at a specific position of the cross beam 1 by using a G-shaped clamp 15; hoisting the integral structure to a specific position of the water tank through a bridge crane, wherein the steel cable 9 is in a loose state during hoisting; after the integral structure is hoisted in place, the steel cable 9 is tensioned through the steel cable tensioner 8 so as to reduce the vertical deformation of the beam 1.
In the embodiment 1, as shown in fig. 6, the maximum stress value appears at the end of the beam of the supporting steel frame device, and the value is 45.91Mpa <215Mpa (Q235 steel yield strength design value), so that the structure is safe; as shown in fig. 7, the maximum vertical displacement occurs in the middle of the beam of the steel frame supporting device, the maximum vertical displacement is 5.42cm <10cm (five thousandths of the length of the beam), and the vertical deformation meets the requirement.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A support for testing hydrodynamic parameters of a pool of an underwater vibration table is characterized by comprising a supporting steel frame device and an instrument clamping device;
the steel frame supporting device comprises a cross beam, two horizontal short beams, two vertical beams and a steel cable, wherein the middle parts of the horizontal short beams are respectively and fixedly connected with the two ends of the cross beam, the bottom ends of the vertical beams are respectively and orthogonally connected with the end parts of the cross beam and the middle parts of the horizontal short beams, and the steel cable is respectively connected with the bottom ends of the cross beam and the vertical beams through the upper ends of the vertical beams;
the instrument clamping device comprises a middle vertical rod, a plurality of transverse rods and a plurality of movable vertical rods, the transverse rods are fixedly connected with the upper end and the lower end of the middle vertical rod, and the movable vertical rods are connected with the transverse rods through fixed bayonets and hand-screwed bolts.
2. The support according to claim 1, characterized in that a first hanging ring is arranged on the outer side of the bottom end of the vertical beam, second hanging rings are arranged on the inner side and the outer side of the upper end of the vertical beam, and a third hanging ring is arranged on the upper side of the position which is far away from the end 1/3 of the cross beam.
3. The stand of claim 2, wherein the cable is connected to the first and third eye through the second eye.
4. The bracket of claim 2 wherein said cable is provided with a cable tensioner proximate said first eye end.
5. The support of claim 1, wherein an inclined support is arranged between the horizontal short beam and the vertical beam.
6. The rack of claim 1, wherein the instrument holder is attached to the beam bottom by a G-clamp.
7. The support according to claim 1, characterized in that a nut is welded on the inner side of the fixing bayonet, and the inner diameter of the nut is matched with the outer diameter of the hand-screwed bolt.
8. The rack of claim 1, wherein the cross bars are arranged in an equidistant array around the upper and lower ends of the middle vertical bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121858805.1U CN216050582U (en) | 2021-08-10 | 2021-08-10 | Support for testing pool hydrodynamic parameters of underwater vibration table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121858805.1U CN216050582U (en) | 2021-08-10 | 2021-08-10 | Support for testing pool hydrodynamic parameters of underwater vibration table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216050582U true CN216050582U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121858805.1U Active CN216050582U (en) | 2021-08-10 | 2021-08-10 | Support for testing pool hydrodynamic parameters of underwater vibration table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216050582U (en) |
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2021
- 2021-08-10 CN CN202121858805.1U patent/CN216050582U/en active Active
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