Underwater structure seismic oscillation water pressure simulation and measurement experiment device

Abstract

The utility model discloses an underwater structure seismic oscillation water pressure simulation and measurement experiment device, which comprises an outer framework box body, the outer framework box body comprises an iron outer framework, toughened glass and porous sponge, the iron outer framework, the toughened glass and the porous sponge are jointly enclosed to form the outer framework box body with an upper opening, the porous sponge is arranged on the inner wall of the toughened glass, and the outer framework box body is provided with a lower opening. The wave absorber is used for absorbing fluctuations generated by water flow and reflected waves generated by touching the inner wall; the movable framework supporting system is arranged on the outer framework box body; the movable framework supporting system is arranged on the outer framework box body; an actuator loading system, wherein the actuator loading system is arranged on the movable frame supporting system; and the experimental underwater structure is arranged in the cavity of the outer framework box body through the actuator loading system. According to the utility model, the depth of the underwater structure in the vertical direction can be changed, time and water resources are effectively saved, and the influence of seismic waves with different magnitudes and different frequencies on the underwater structure can be simulated.

Description

TECHNICAL FIELD

[0001] The utility model relates to vibration simulation experiment equipment technical field more specifically, relate to a kind of underwater structure seismic water pressure simulation and measurement experimental device. BACKGROUND

[0002] At present, some areas of our country have earthquake, and the east coast is in the circum-pacific seismic belt, which makes our country become one of the countries with more earthquakes in the world. After the earthquake, the deepwater large-span bridge has become the key of lifeline engineering, and its safety is directly related to the speed and progress of the earthquake relief action, and also related to the safety of major bridge structure engineering under the action of earthquake. It is not difficult to see that the seismic performance research of deepwater bridge structure is a very practical problem. Under the influence of earthquake, the movement of water structure will cause the radiation wave movement of water around the structure, and water will generate hydrodynamic pressure under the action of the underwater part of the structure due to the relative movement of structure and water. The hydrodynamic pressure will not only change the dynamic characteristics of the structure, but also affect the dynamic response of the structure. At present, under the premise of theoretical analysis of hydrodynamic pressure under the action of earthquake, it is urgent to verify the theoretical derivation formula by scale model experiment.

[0003] At present, in water and structure vibration simulation experiment, underwater vibration simulation device is generally used. The traditional underwater vibration simulation device includes two kinds. One is to install a water tank on a vibration table, and then install a structure in the water tank, and the vibration table simulates the vibration of earthquake. But this structure is difficult to ignore the influence of the water disturbance caused by the water tank with water vibration on the data results; the other is large underwater vibration table experiment, which is to fix the structure on the vibration table in a certain scale water area to simulate the vibration of earthquake, but this structure cannot ignore the influence of the data results caused by the underwater auxiliary structure movement in the movement process. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of underwater structure seismic water pressure simulation and measurement experimental device.

[0005] According to the utility model provides a kind of underwater structure seismic water pressure simulation and measurement experimental device, it includes:

[0006] Exoskeleton box, the exoskeleton box includes by iron exoskeleton, toughened glass, porous sponge, and is surrounded together with the upper opening of the exoskeleton box, the porous sponge is installed on the inner wall of the toughened glass, for absorbing the fluctuation of water flow and the reflection wave generated by hitting inner wall;

[0007] Movable frame support system, the movable frame support system is arranged on the exoskeleton box;

[0008] an actuator loading system disposed on the movable frame support system;

[0009] an experimental underwater structure disposed in the cavity of the exoskeleton box by the actuator loading system.

[0010] Optionally, the tempered glass is adhered between the iron exoskeleton and the porous sponge by waterproof adhesive.

[0011] Optionally, the exoskeleton box further comprises a lifting lug, which is welded to the iron exoskeleton.

[0012] Optionally, the movable frame support system comprises a base assembly, which is anchored to the iron exoskeleton by screws.

[0013] Further, the movable frame support system comprises movable frame support assemblies, at least one of which is movably disposed on the movable frame support base in sequence.

[0014] Further, the base assembly comprises two movable frame support bases arranged in parallel, and the movable frame support assemblies comprise:

[0015] two longitudinal columns, each of which is disposed on a movable frame support base;

[0016] a variable crossbeam, the ends of which are connected to the two longitudinal columns by angle brackets;

[0017] four diagonal supports, one end of each of which is connected to the movable frame support base by an angle bracket, and the other end is connected to the variable crossbeam by an angle bracket, the four diagonal supports being respectively located on the front and rear sides and the left and right sides of the variable crossbeam.

[0018] Optionally, the actuator loading system comprises:

[0019] a sliding table base connected to the movable frame support system by an angle bracket;

[0020] a servo motor installed on the sliding table base, the servo motor being connected to a ball screw;

[0021] a sliding module, the ball screw being in transmission connection with the sliding module.

[0022] Further, the experimental underwater structure is connected to the sliding module by a connecting plate.

[0023] Further, the experimental underwater structure is provided with a plurality of pressure sensors arranged along the water depth direction.

[0024] Further, the pressure sensors transmit signals into a computer system through built-in sensor wire groups.

[0025] According to the technical content disclosed by the utility model, the following beneficial effects are achieved:

[0026] The movable frame support system can change the vertical depth of the experimental underwater structure, thereby effectively saving time and water resources.

[0027] The actuator loading system is adopted to synchronize the simulated seismic motion with the water body motion, and the frequency and amplitude of the actuator loading can be adjusted to simulate the influence of seismic waves of different magnitudes and different frequencies on the underwater structure, thereby avoiding the influence of water body disturbance in the water tank on experimental data in the traditional device.

[0028] The device is simple, easy to disassemble and more economical.

[0029] Other features and advantages of the utility model will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0031] Figure 1 The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0032] Figure 2 The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0033] Figure 3 The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0034] Figure 4 The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0036] 1-1-tempered glass; 1-2-hoisting ear; 1-3-porous sponge; 1-4-iron exoskeleton;

[0037] 2-1-angle code; 2-2-variable cross beam; 2-3-inclined support; 2-4-longitudinal column; 2-5-movable frame support base;

[0038] 3-1 -servo motor; 3-2 -ball screw; 3-3 -sliding table base; 3-4 -sliding module; 3-5 -connecting plate; 3-6 -experimental underwater structure. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0040] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.

[0041] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0042] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of exemplary embodiments can have different values.

[0043] It should be noted that like references and characters herein relate to like items throughout the figures, and once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0044] As Figures 1 to 4 shown, according to the present application, there is provided a device for simulating and measuring seismic water pressure of underwater structure, comprising:

[0045] The outer frame box 1 comprises an iron outer frame 1-4, tempered glass 1-1, and porous sponge 1-3, which together form an outer frame box 1 with an upper opening. The porous sponge 1-3 is installed on the inner wall of the tempered glass 1-1, and is used to absorb the fluctuations caused by water flow and the reflected waves caused by hitting the inner wall.

[0046] The movable frame support system 2 is arranged on the outer frame box 1.

[0047] The actuator loading system 3 is arranged on the movable frame support system 2.

[0048] The experimental underwater structure 3-6 is arranged in the cavity of the outer frame box 1 through the actuator loading system 3.

[0049] Specifically, the outer frame box 1 is made of iron, and the tempered glass 1-1 is adhered to the iron outer frame 1-4 and the porous sponge 1-3 by waterproof glue. The porous sponge 1-3 is installed on the inner wall of the tempered glass 1-1, and is used to absorb the fluctuation of water flow and the reflected wave generated by hitting the inner wall, so as to reduce the water wave. It can effectively simulate the condition of the water wave fluctuation to infinity in the actual water area, and avoid the influence of the reflected wave on the accuracy of the experimental determination parameters.

[0050] The movable frame support system 2 is made of aluminum, and is used to support the experimental underwater structure 3-6 loaded in the outer frame box 1.

[0051] The water body in the outer frame box 1 does not directly contact with the vibration table, but uses the actuator loading system 3, which can reduce the disturbance of the vibration table to the water body, and adjust the frequency and amplitude of the actuator loading system 3, so as to simulate the influence of different seismic waves with different frequencies on the underwater structure. Precise control of the structure to produce different frequencies and amplitudes of motion can effectively reduce the disturbance of the vibration table vibration to the water body. At the same time, the porous elastic sponge is uniformly arranged on the inner wall of the outer frame box 1. This medium can limit the influence of the reflected wave fluctuation on the interaction between the experimental underwater structure 3-6 and the water body, reflect the influence of the real environment on the hydrodynamic pressure, and improve the accuracy of the water body response. A plurality of pressure sensors are arranged in the experimental underwater structure 3-6 along the water depth direction. The hydrodynamic pressure at different positions is monitored in real time. And using high-speed data acquisition system, real-time recording of water body motion, hydrodynamic pressure and other data. Through data processing and analysis software, the seismic performance of the bridge, the hydrodynamic pressure and the dynamic response of the structure can be analyzed systematically. This scheme is expected to provide a more solid theoretical basis and practical guidance for the seismic design of deep water bridges in China.

[0052] The movable frame support system 2 can change the vertical depth of the experimental underwater structure 3-6, effectively saving time and water resources.

[0053] The use of actuator loading system 3 makes the simulated seismic motion completely synchronized with the water body motion, and the frequency and amplitude of the actuator loading can be adjusted to simulate the influence of different seismic waves with different frequencies on the underwater structure, avoiding the influence of water body disturbance in the water tank on the experimental data in the traditional device. Only the experimental underwater structure 3-6 is in motion in the water area, avoiding the influence of the vibration table and other auxiliary structures.

[0054] The device is simple, easy to disassemble, and more economical.

[0055] For example, Figures 1 to 4As shown, the utility model provides a kind of underwater structure seismic water pressure simulation and measurement experimental device, and tempered glass 1-1 is integrally processed, and is adhered in the middle of iron outer frame 1-4 and porous sponge 1-3 using waterproof glue, and outer frame box 1 further includes lifting lug 1-2, and lifting lug 1-2 is welded with iron outer frame 1-4 Connection.Lifting lug 1-2 is integrally processed, and it is convenient for the installation and movement of outer frame box 1, and is welded with iron outer frame 1-4 Fixed.

[0056] Porous sponge 1-3 is the porous sponge 1-3 structure integrally processed, can effectively absorb wave, prevent reflection wave from affecting structure, reduce error.Iron outer frame 1-4 provides overall stiffness, and is processed in blocks, and is welded together as a whole, which supports and stabilizes the whole.

[0057] As shown in the figure, Figures 1 to 4 According to the utility model provides a kind of underwater structure seismic water pressure simulation and measurement experimental device, movable frame support system 2 includes base assembly, and base assembly is anchored on iron outer frame 1-4 by screw.For movable frame support system 2 provides stable effect.

[0058] Movable frame support system 2 includes movable frame support assembly, and movable frame support assembly is at least one, and is sequentially spaced and arranged on movable frame support base 2-5.

[0059] Base assembly includes two parallel movable frame support bases 2-5, and movable frame support assembly includes:

[0060] Longitudinal column 2-4, two longitudinal columns 2-4 are arranged on two movable frame support bases 2-5 respectively;

[0061] Variable crossbeam 2-2, two ends of variable crossbeam 2-2 are connected with two longitudinal columns 2-4 through corner code 2-1 respectively;

[0062] Inclined support 2-3, four inclined supports 2-3, one end of inclined support 2-3 is connected with movable frame support base 2-5 through corner code 2-1, one end is connected with variable crossbeam 2-2 through corner code 2-1, and four inclined supports 2-3 are located at the front and rear sides and left and right sides of variable crossbeam 2-2.Strengthen the whole movable frame support system 2.

[0063] Among them, corner code 2-1 is aluminum structure integrally processed, which is stably and reliably fixed together with movable frame support base 2-5, longitudinal column 2-4, variable crossbeam 2-2 and inclined support 2-3, and the whole movable frame support system 2 can be adjusted flexibly.

[0064] Variable crossbeam 2-2, both ends of variable crossbeam 2-2 are connected with two longitudinal columns 2-4 through angle code 2-1 respectively, and height can be changed flexibly.

[0065] As shown in Figures 1 to 4 The utility model provides a kind of underwater structure seismic water pressure simulation and measurement experiment device, actuator loading system 3 includes:

[0066] Slip base 3-3 is connected with movable frame support system 2 by angle code 2-1;

[0067] Servo motor 3-1 is installed on slip base 3-3, and servo motor 3-1 is connected with ball screw 3-2;

[0068] Sliding module 3-4 is drivingly connected with ball screw 3-2.

[0069] Experimental underwater structure 3-6 is connected with sliding module 3-4 by connecting plate 3-5.

[0070] Experimental underwater structure 3-6 is arranged with multiple pressure sensors along water depth direction. Pressure sensor receives signal by inductive touch.

[0071] Pressure sensor transmits signal into computer system by built-in sensor line group.

[0072] Servo motor 3-1 outputs power for actuator loading system 3, is fixed on slip base 3-3, servo motor 3-1 drives ball screw 3-2 to rotate forward and reverse, and ball screw 3-2 rotates forward and reverse to realize driving sliding module 3-4 reciprocating motion. Sliding module 3-4 is integrally processed, is penetrated by threaded rod, and changes movement direction along with rotation. Slip base 3-3 is integrally processed into aluminum structure, and provides fixed platform for actuator loading system 3.

[0073] When experiment is carried out, underwater structure seismic water pressure simulation and measurement experiment device is placed on open space by hoisting ear 1-2, and tempered glass 1-1 and porous sponge 1-3 are fixed on iron exoskeleton 1-4 by waterproof glue.

[0074] According to experimental design condition adjustment movable frame support system 2 height, and is fixed by angle code 2-1. Slip base 3-3 is placed in movable frame support system 2 center, and is connected with servo motor 3-1, threaded rod, connecting plate 3-5 and sliding module 3-4, to form power actuator loading system 3. Experimental underwater structure 3-6 is connected with connecting plate 3-5 by angle code 2-1, finally pressure sensor is installed in experimental floating structure along water depth, and is connected with computer system, to monitor dynamic water pressure change in real time.

[0075] The experimental device for simulating and measuring seismic water pressure of underwater structure has the advantages that only the experimental underwater structure 3-6 is in motion in the water area, the influence of the vibration table and the movable frame support system 2 is avoided, the porous sponge 1-3 is installed on the inner wall of the toughened glass 1-1, and the fluctuation of water flow and the reflected wave generated by colliding with the inner wall are absorbed.

[0076] The actual water wave fluctuation to the condition of infinite propagation can be effectively simulated, the accuracy of the experimental determination parameters is avoided from the influence of the reflected wave, the detachable device is used to simulate the wall surface influence, and the multifunctional use of the water tank is realized.

[0077] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. An experimental apparatus for simulating and measuring seismic hydrodynamic pressure on an underwater structure, characterized by, The application relates to an underwater structure experimental device, which comprises the following parts: an outer frame box, which comprises an iron outer frame, tempered glass and a porous sponge, and the outer frame box is formed by the iron outer frame, the tempered glass and the porous sponge, the porous sponge is arranged on the inner wall of the tempered glass and used for absorbing fluctuation caused by water flow and reflection caused by impact on the inner wall; a movable frame support system arranged on the outer frame box; an actuator loading system arranged on the movable frame support system; an experimental underwater structure arranged in the cavity of the outer frame box through the actuator loading system.

2. The apparatus according to claim 1, wherein The tempered glass is adhered to the iron outer frame and the porous sponge through waterproof glue.

3. The apparatus of claim 1, wherein, The outer frame box further comprises lifting ears which are welded to the iron outer frame.

4. The apparatus of claim 1, wherein, The movable frame support system comprises a base assembly which is anchored to the iron outer frame through screws.

5. The apparatus of claim 4, wherein, The movable frame support system comprises movable frame support assemblies which are arranged on the base assembly in sequence and are movable.

6. The apparatus of claim 5, wherein, The base assembly comprises two parallel movable frame support bases, and the movable frame support assemblies comprise: two longitudinal columns which are arranged on the two movable frame support bases respectively; a variable crossbeam which is connected to the two longitudinal columns through angle codes at two ends respectively; four inclined supports which are connected to the movable frame support bases through angle codes at one end and connected to the variable crossbeam through angle codes at the other end, and the four inclined supports are arranged on the front and rear sides and the left and right sides of the variable crossbeam respectively.

7. The apparatus of claim 1, wherein, The actuator loading system comprises: a sliding table base which is connected to the movable frame support system through an angle code; a servo motor which is arranged on the sliding table base and connected to a ball screw; a sliding module which is transmissionally connected to the ball screw.

8. The apparatus of claim 7, wherein, The experimental underwater structure is connected to the sliding module through a connecting plate.

9. The apparatus of claim 8, wherein, The experimental underwater structure is provided with a plurality of pressure sensors arranged in the water depth direction.

10. The apparatus of claim 9, wherein, The pressure sensors transmit signals into a computer system through built-in sensor lines.

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