CN214667544U - Suspension tunnel dynamic response test device under solid migration and wave current coupling - Google Patents
Suspension tunnel dynamic response test device under solid migration and wave current coupling Download PDFInfo
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- CN214667544U CN214667544U CN202121302692.7U CN202121302692U CN214667544U CN 214667544 U CN214667544 U CN 214667544U CN 202121302692 U CN202121302692 U CN 202121302692U CN 214667544 U CN214667544 U CN 214667544U
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Abstract
The utility model belongs to the technical field of ocean engineering and bridge tunnel engineering, a solid migration and wave flow coupling suspension tunnel dynamic response test device down is related to, including setting up the experimental body of suspension tunnel in experimental harbor pond, making the ripples and making a class device and sensor data acquisition device, the top in experimental harbor pond is equipped with truss trailer device, is equipped with the solid migration device that can act on the experimental body of suspension tunnel on truss trailer device. The utility model discloses a test device can truly effectively simulate the structure atress and the dynamic response condition of underwater suspension tunnel under the load effect such as wave flow, solid impact.
Description
Technical Field
The utility model belongs to the technical field of ocean engineering and bridge tunnel engineering, concretely relates to solid migration and wave flow coupling effect suspend tunnel dynamic response test device down.
Background
A suspension tunnel (Archimedes bridge) is a novel traffic structure spanning water channels of deep sea straits, great rivers and lakes and the like, participates in supporting tunnel weight and traffic load through self buoyancy, and has the advantages of small longitudinal gradient, short overall length of the structure, all-weather operation and the like compared with structures spanning sea bridges, immersed tube tunnels and the like. During operation, the floating tunnel is subjected to the actions of waves, ocean currents, loads of moving vehicles and the like, and is also subjected to the risks of migration, collision and impact of sunken ships, sea surface falling objects, submarines and large-scale marine organisms.
At present about the research in the aspect of solid migration impact load is in preliminary stage, and suspension tunnel test body length is big, and the structure is gentle, is in the deep water environment again, under the impact load effect, and overall structure can take place great deformation and vibration, and too big impact force can lead to body local damage and take place to gush secondary disasters such as water simultaneously, seriously threatens inside traffic and personnel's life safety. The suspension tunnel is subjected to the coupling effect of the wave flow field under the solid migration effect, and the suspension tunnel can vibrate in a nonlinear mode under the solid migration impact load effect, so that interaction with the surrounding wave flow field is achieved. Under the wave flow coupling and solid migration impact effects, the practical model needs to be simplified too much when theoretical analysis and numerical simulation are adopted, so that the research result has larger error with the practical situation, and a dynamic response test of the suspension tunnel under the solid migration and wave flow coupling effects is needed.
The suspended tunnel dynamic response test device (patent number: CN110174227A) under the coupling action of earthquake and wave current considers the suspended tunnel dynamic response test device under the coupling action of earthquake and wave current, and can simulate the structure motion condition of an underwater suspended tunnel under the loading action of wave current, earthquake and the like. However, the structural vibration acceleration is not measured, and the impact of the solid transport on the suspension tunnel cannot be reproduced.
A suspension tunnel integral impact response test device (patent number: CN104034504A) provides a suspension tunnel test device for simulating integral impact, which can adjust impact load through the combined action of a drop hammer and a guide rail thereof. However, the proposed drop hammer impact device can only perform vertical impact action, simulate the impact condition of a falling object and a sunken ship, and cannot simulate and reproduce the migration impact of a submarine and large marine organisms. Meanwhile, the drop hammer impact device can only achieve the purpose of simulating impact load by adjusting the drop height, and cannot realize accurate test simulation of solid migration impact speed.
Therefore, in order to accurately grasp the vibration characteristics and the stress conditions of the suspension tunnel under the solid migration and wave-flow coupling effects, the port model test device of the suspension tunnel under the solid migration and wave-flow coupling effects needs to be designed by summarizing and analyzing the prior test model and making up for the defects.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a suspension tunnel dynamic response test device under solid migration and wave current coupling aims at solving among the prior art and does not carry out the measurement of structural vibration acceleration and to the accurate experimental simulation scheduling problem of solid migration impact velocity.
In order to achieve the above purpose, the utility model provides a following technical scheme: suspension tunnel dynamic response test device under solid migration and wave current coupling, including setting up the experimental body of suspension tunnel in experimental harbor pond, making the wave and making a class device and sensor data acquisition device, the top in experimental harbor pond is equipped with truss trailer device, is equipped with the solid migration device that can act on the experimental body of suspension tunnel on the truss trailer device. By adopting the scheme, the wave-making flow-making device is combined with the truss trailer device to simulate the coupling effect of solid migration and wave flow, so that the dynamic response test simulation of the floating tunnel facing to the migration collision impact of sunken ships, sea surface falling objects, submarines and large marine organisms under the complex marine environment is realized, and the structural stress and dynamic response conditions of the underwater floating tunnel under the load effects of wave flow, solid impact and the like can be truly and effectively simulated.
Furthermore, one side of the test harbor basin is provided with the wave making and flow generating device, and the other opposite side is provided with the metal net wave absorbing device.
Furthermore, a plurality of groups of pulley devices are installed at the bottom of the test harbor basin, and the suspension tunnel test pipe body is arranged on the pulley devices through anchor cables.
Further, the sensor data acquisition device comprises a capacitance type wave height instrument, a Doppler current meter, a tension sensor, a displacement sensor, an acceleration sensor and a point pressure sensor, wherein the capacitance type wave height instrument is respectively arranged at one side close to the wave making and flow generating device, one side of the metal net wave absorbing device and the front, rear, left and right sides of the suspended tunnel test tube body and is used for wave making parameter adjustment when a suspended tunnel test tube body model is absent and wave height real-time monitoring when a suspended tunnel test tube body model is contained under the wave flow coupling action; the multi-pril flow velocity meters are arranged on two sides of the suspended tunnel test pipe body along the advancing direction of waves and used for measuring the flow velocity change condition along the water depth; the tension sensor is connected to the anchor cable and used for measuring tension change conditions of the anchor cable under the coupling action of the solid migration device and the wave flow; the displacement sensors are arranged on two sides of the suspension tunnel test tube body, and the displacement change conditions of two ends of the suspension tunnel test tube body are measured underwater in a pull line mode; the acceleration sensor is arranged above the suspension tunnel test tube body and used for measuring the dynamic characteristics of the suspension tunnel test tube body; the point pressure sensor is arranged in the suspension tunnel test pipe body model before being packaged, and the point pressure sensor is used for collecting the point pressure applied to the suspension tunnel test pipe body in a punching mode on the inner surface of the point pressure sensor.
Furthermore, the capacitance type wave height meters respectively arranged at two axial sides close to the suspension tunnel test tube body, one side of the wave generating and flow making device and one side of the metal net-shaped wave absorbing device are positioned on the same straight line. The installation is convenient.
Furthermore, the sensor data acquisition device also comprises a pressure sensor, the solid migration device is arranged at the collision contact position with the suspended tunnel test tube body, and the pressure sensor is convenient for measuring the impact pressure when the solid migration device impacts the suspended tunnel test tube body.
The utility model discloses a theory of operation is: firstly, checking and adjusting wave, water flow and wave flow coupling parameters and eliminating reflected waves so as to eliminate or avoid the influence of the reflected waves on the surfaces of a harbor basin and a structure on a suspended tunnel test tube body and improve the test accuracy; and the stress and dynamic response conditions of the suspended tunnel can be accurately collected by adopting various sensing measuring devices, and the combined action of solid migration and wave flow coupling is simulated by utilizing the wave-making flow-making device and the truss trailer, so that the structural stress and dynamic response conditions of the underwater suspended tunnel under the load action of wave flow, solid impact and the like are truly and effectively simulated.
The utility model has the advantages that:
1. the utility model discloses a test device simple structure and be convenient for install, can really effectively simulate the structure atress and the dynamic response condition of underwater suspension tunnel under the load effect such as ripples flow, solid impact.
2. The utility model discloses a test device utilizes the anchor rope to pass through and links to each other with the suspension tunnel after the pulley to suspend the body in aqueous according to the suspension degree of depth, and combine the truss trailer to drive solid migration device uniform motion and strike the experimental body in suspension tunnel, be used for simulating the combined action of solid migration and wave flow coupling.
3. The utility model discloses a test device passes through the truss trailer and drives the solid migration device, can simulate different solid migration operating modes, like the collision impact that sunken ship, sea fall thing, submarine and large-scale marine organism migrated.
4. The utility model discloses a test device is through utilizing the netted wave absorption device of metal, and the influence of reflection wave to the experimental body of suspension tunnel is eliminated to the ability of absorbing reflection wave.
5. The utility model discloses a test device adopts multiple sensing measuring device can realize accurate collection to the atress in suspension tunnel and the dynamic response condition.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a vertical layout of the testing device of the present invention;
FIG. 2 is a plan view of the testing device of the present invention;
FIG. 3 is a vertical layout of the sensor data acquisition device of the testing device of the present invention;
reference numerals: 1-a suspended tunnel test pipe body, 2-an anchor cable, 3-a solid migration device, 4-a capacitance wave height instrument, 5-a Doppler current meter, 6-a tension sensor, 7-a displacement sensor, 8-an acceleration sensor, 9-a point pressure sensor, 10-a pressure sensor, 101-a wave making device, 102-a pulley device, 103-a metal net wave absorbing device, 104-a truss trailer device and 105-a test harbor basin; the arrows in the figure are the wave propagation directions.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 1-2, the dynamic response test device for the suspension tunnel under the coupling of solid migration and wave current mentioned in this embodiment mainly comprises a test harbor basin 105, a wave making and flow making device 101 is arranged on one side of the test harbor basin 105, a metal net wave absorbing device 103 is arranged on the other opposite side, the truss trailer device 104 is arranged above the test harbor pool 105, the solid migration device 3 which can act on the suspension tunnel test tube body 1 is arranged on the truss trailer device 104, a plurality of groups of pulley devices 102 are arranged at the bottom of the test harbor pool 105, the suspension tunnel test tube body 1 is arranged on the pulley devices 102 through anchor cables 2, a sensor data acquisition device is arranged at a specific position in the test harbor pool 105, the sensor data acquisition device comprises a plurality of sensing measurement devices and is used for collecting stress and dynamic response data of the suspension tunnel. Therefore, the wave-making flow-making device is combined with the truss trailer device to simulate the coupling effect of solid migration and wave flow, so that the dynamic response test simulation of the floating tunnel facing to the impact of the migration and collision of sunken ships, sea surface falling objects, submarines and large marine organisms under the complex marine environment is realized, and the structural stress and the dynamic response condition of the underwater floating tunnel under the load effects of the wave flow, the solid impact and the like can be truly and effectively simulated.
Specifically, the wave-making and flow-generating device 101 is composed of a wave-making system and a flow-making system, and wave parameters are input through a control computer to realize the generation of various wave types; namely: the wave-making system consists of an upper control computer, a motion controller, sixteen sets of driving systems, forty-eight sets of servo motors, forty-eight sets of wave-making machine frames, wave pushing plates, control connecting wires, a set of wave height measuring system and the like, and wave parameters are input through the control computer to realize the generation of various wave types; the flow making system realizes forward and reverse flow making control by controlling five bidirectional flow making pumps below the test harbor basin 105 so as to simulate the coupling effect of wave flow in a complex marine environment; the truss trailer device mainly comprises a truss, a trailer arranged on the truss and a driving mechanism, so that the truss can move at a constant speed or at a variable speed along the horizontal and vertical water flow directions in the test harbor basin 105, and the solid transfer device 3 is connected to move, so that the impact simulation of the solid transfer device 3 on the suspended tunnel test pipe body 1 is realized; the sensor device comprises a flow making system of the harbor basin, and forward and reverse flow making control is realized by controlling 5 bidirectional flow making pumps below the harbor basin, so that the coupling effect of wave flow in a complex marine environment is simulated.
The pulley device 102 at the bottom of the test harbor basin 105 in the embodiment is used for connecting the anchor cable 2, so that the anchor cable installation and angle adjustment of the suspension tunnel test tube body 1 are facilitated. The metal mesh wave-absorbing device 103 is composed of a metal mesh and is used for absorbing wave energy, eliminating the influence of wave reflection and improving the wave-making accuracy. Truss trailer device 104 can follow level and perpendicular rivers direction and carry out at the uniform velocity or variable speed and move, can install solid migration device 3 on truss trailer device 104, simultaneously, realizes the removal of solid migration device 3 through truss trailer device 104's removal, and then realizes the impact simulation of solid migration device 3 to suspension tunnel test body 1.
Referring to fig. 3, the sensor data acquisition device includes a plurality of sensing measurement devices, including a capacitive wave height meter 4, a doppler flow velocity meter 5, a tension sensor 6, a displacement sensor 7, an acceleration sensor 8, a point pressure sensor 9, and a pressure sensor 10, for collecting stress and dynamic response conditions of the suspension tunnel test tube 1 and the anchor cable 2. Specifically, the capacitance wave height meters 4 are respectively arranged on one side close to the wave generating and flow making device 101, one side of the metal mesh wave absorbing device 103 and the front, rear, left and right sides of the suspended tunnel test tube body 1, the total is six or more, and the multi-pril flow velocity meters 5 are arranged on two sides of the suspended tunnel test tube body 1 along the wave advancing direction. The tension sensor 6 is attached to the anchor line 2, and the anchor line 2 is attached to the pulley device 102. And the displacement sensors 7 are arranged on two sides of the suspension tunnel test pipe body 1. The acceleration sensor 8 is installed above the suspension tunnel test tube body 1. The point pressure sensor 9 is installed inside the pipe body 1 before the suspension tunnel test pipe body 1 is packaged, and the point pressure sensor collects the point pressure applied to the suspension tunnel test pipe body through the form of punching on the surface of the pipe body model. And a pressure sensor 10 is arranged at the collision contact position of the solid transfer device 3 and the suspension tunnel test tube body 1.
The method for testing the dynamic response of the suspension tunnel under the coupling effect of solid migration and wave flow comprises the following steps:
the method comprises the following steps: a capacitance wave height instrument 4 is arranged in the test harbor basin 105, and parameter checking and adjustment are carried out on a wave making system of the wave making and current making device 101; installing a Doppler current meter 5, and verifying the accuracy of the flow making parameters and the wave flow coupling of the wave making flow device 101;
step two: installing a point pressure sensor 9 before model packaging of the suspension tunnel test tube body 1, installing the suspension tunnel test tube body 1 in a test harbor basin 105, connecting an anchor cable 2 with the suspension tunnel test tube body 1 through a pulley device 102 penetrating through the bottom, and installing a tension sensor 6, a displacement sensor 7 and an acceleration sensor 8;
step three: installing a solid transfer device 3 on a truss trailer device 103, and installing a pressure sensor 10 at the collision contact position of the solid transfer device 3 and the suspension tunnel test pipe body 1;
step four: the wave making and flow making device 101 is used for making wave and flow, and after the wave and flow are fully coupled, the truss trailer device 104 drags the solid transfer device 3 to impact the suspended tunnel test pipe body 1 at a constant speed or at a variable speed;
step five: the tension sensor 6, the displacement sensor 7, the acceleration sensor 8, the point pressure sensor 9 and the pressure sensor 10 are used for measuring various data such as stress, dynamic response and the like of the suspended tunnel test tube body 1, and the sensor data acquisition device is used for dynamically acquiring various sensing measurement data.
In a simple way, the test method is that a capacitance wave height instrument and a Doppler current meter are arranged in a test harbor basin, and wave flow coupling parameter check is carried out through the wave height and the time course change of the flow speed; the anchor cable penetrates through a pulley device at the bottom of the test harbor basin to be connected with the test pipe body of the suspension tunnel, and a tension sensor, a displacement sensor, an acceleration sensor and a point pressure sensor are arranged at the same time; installing a solid transfer device on a truss trailer device capable of adjusting the running speed, and installing a pressure sensor; the wave system is made in the utilization, and the flow system is made in the utilization, treats that the wave flow interact stabilizes the back, opens truss trailer device and strikes suspension tunnel test body with fixed speed or variable speed with solid migration device to carry out dynamic acquisition through sensor data acquisition device to data. Therefore, the utility model discloses can truly effectively simulate the structure atress and the dynamic response condition under the loading effect such as wave current, solid impact of underwater suspension tunnel.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (6)
1. The dynamic response test device for the suspended tunnel under the coupling of the solid migration and the wave flow comprises a suspended tunnel test pipe body (1) arranged in a test harbor basin (105), a wave making and flow making device (101) and a sensor data acquisition device, and is characterized in that a truss trailer device (104) is arranged above the test harbor basin, and a solid migration device (3) capable of acting on the suspended tunnel test pipe body is arranged on the truss trailer device.
2. The dynamic response test device for the suspended tunnel under the coupling of the solid transport and the wave flow according to claim 1, characterized in that the wave making and flow making device is arranged on one side of the test harbor basin, and the metal mesh wave damping device (103) is arranged on the other opposite side.
3. The dynamic response test device for the suspension tunnel under the coupling of the solid migration and the wave current according to claim 2, is characterized in that a plurality of groups of pulley devices (102) are installed at the bottom of the test harbor basin, and the suspension tunnel test tube body is arranged on the pulley devices through anchor cables (2).
4. The dynamic response test device for the suspended tunnel under the coupling of the solid migration and the wave current according to claim 3, wherein the sensor data acquisition device comprises a capacitance wave height instrument (4), a Doppler current meter (5), a tension sensor (6), a displacement sensor (7), an acceleration sensor (8) and a point pressure sensor (9), and the capacitance wave height instrument is respectively arranged on one side close to the wave generating and current generating device, one side of the metal mesh wave damping device and the front, back, left and right sides of the suspended tunnel test tube body; the Doppler current meters are arranged on two sides of the suspension tunnel test tube body along the wave advancing direction; the tension sensor is connected to the anchor cable; the displacement sensors are arranged on two sides of the suspension tunnel test tube body; the acceleration sensor is arranged above the suspension tunnel test tube body; the point pressure sensor is arranged inside the suspension tunnel test tube body.
5. The dynamic response test device for the suspended tunnel under the coupling of the solid migration and the wave flow according to claim 4, wherein the capacitive wave height meters respectively arranged at two axial sides, one side of the wave generating and flow generating device and one side of the metal mesh wave damping device close to the suspended tunnel test tube body are positioned on the same straight line.
6. The dynamic response test device for the suspended tunnel under coupling of solid migration and wave flow of claim 4 or 5, characterized in that the sensor data acquisition device further comprises a pressure sensor (10), and the pressure sensor is arranged on the solid migration device and at a position of collision contact with the suspended tunnel test tube body.
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| CN202121302692.7U CN214667544U (en) | 2021-06-09 | 2021-06-09 | Suspension tunnel dynamic response test device under solid migration and wave current coupling |
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| CN202121302692.7U CN214667544U (en) | 2021-06-09 | 2021-06-09 | Suspension tunnel dynamic response test device under solid migration and wave current coupling |
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