A submerged floating tunnel inerter tuned mass damper

Abstract

The application discloses a kind of seabed suspension tunnel inertial damper, it is related to cross-sea traffic technical field;Including acceleration type inertial container, it is located between the lane layer of tunnel pipe body and mass block;Through the gear transmission system inside acceleration type inertial container, the inertia force transmission of tunnel pipe body and mass block is realized, and the inertia force equivalent mass block partial mass.By acceleration type inertial container, inertia force transmission of tunnel pipe body is realized to this damper, to replace partial mass block mass, and then reduce the overall mass and volume of damper, avoid the influence caused by large mass block to tunnel pipe body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cross-sea transportation, and particularly relates to a submerged floating tunnel inertial damper tuned mass damper. BACKGROUND

[0002] With the continuous growth of the demand for transportation in modern society, cross-sea channels and other transportation infrastructures are developing towards larger scale, higher flexibility and deeper water. At present, there are mainly two types of cross-sea structures: cross-sea bridges and submerged immersed tunnels. In comparison, submerged floating tunnels show obvious advantages. Since the floating tunnel is located at a depth of 30 meters below the water, it greatly reduces the risk of collision with ships and also reduces the impact of wave loads, which is more secure than cross-sea bridges. In addition, when facing longer and deeper water, the construction difficulty of immersed tunnels is often much greater than that of floating tunnels. However, whether it is an immersed tunnel or a floating tunnel, they are located underwater and do not occupy the sea shipping route, thereby effectively reducing the impact on the marine environment. Therefore, with the continuous deepening and improvement of the research on floating tunnel technology, it can be predicted that floating tunnels will become an important development trend for future cross-sea channel construction.

[0003] According to the differences in their support systems, floating tunnels are mainly divided into two types: tension leg or anchor cable type underwater floating tunnels, and cylinder type floating tunnels. The tension leg or anchor cable type floating tunnel maintains the stability of the tunnel pipe body through the tension leg or anchor cable connected to the underwater foundation. This structure is suitable for the case where the buoyancy of the pipe body is greater than the weight. The cylinder type floating tunnel maintains stability through the float connected to the pipe body. This structure is more suitable for the case where the buoyancy of the pipe body is less than the weight. As can be seen, as a new type of cross-sea transportation structure, the overall support system of the floating tunnel has more concise and clear constraints compared to traditional transportation structures. Therefore, the floating tunnel has higher requirements in terms of motion control.

[0004] Among the existing large-scale building vibration control technologies, passive control is a widely used method. In this method, the control device is driven by the main structure to passively generate a motion response, thereby eliminating the energy of the main structure without providing external energy. Passive control mainly includes three types of base isolation, energy dissipation and tuned vibration reduction. Base isolation technology is usually applied to the bottom of the structure, and the vibration energy is blocked from being transmitted to the upper part of the structure by setting an isolation layer. In the field of construction, the house isolation device is generally installed at the bottom of the building; while in the field of bridge, the isolation device is usually installed between the pier and the beam. At present, the most widely used isolation devices include laminated rubber bearings and friction pendulum sliding devices. Energy dissipation technology is to set an energy dissipation device to provide additional damping through local deformation of the structure to dissipate seismic energy. The energy dissipation materials used in these energy dissipation devices mainly include lead, soft steel and various memory alloys. Tuned vibration reduction technology is to attach a relatively light mass to the main structure to be controlled. This mass absorbs the kinetic energy of the main structure by tuning the resonance with the main structure, and then dissipates this part of energy through the damping mechanism.

[0005] When passive control devices are used to achieve optimal vibration control effect, it is usually necessary to match a large mass. For traditional longitudinal configuration building structures, it is relatively easy to meet this requirement because they can bear a large mass. However, for a transversely suspended tunnel, if the same vibration control effect is to be achieved, using a large mass will inevitably increase the volume of the control device, thereby causing the suspended tunnel to bear excessive concentrated force locally. This condition will cause significant deformation of the overall tunnel configuration, not only greatly increasing the design difficulty of the suspended tunnel, but also posing a serious threat to its safe use. SUMMARY

[0006] The purpose of the present application is to provide a kind of seabed suspended tunnel inertial capacity tuned mass damper, which is based on acceleration type inertial container conversion tunnel pipe body motion acceleration, to realize equivalent mass block part quality, thereby reducing the overall mass and volume of damper.

[0007] To achieve the above purpose, the technical scheme of the present application is as follows: a kind of seabed suspended tunnel inertial capacity tuned mass damper, including acceleration type inertial container, which is located between the tunnel pipe body and the mass block of the lane layer;Through the gear transmission system inside the acceleration type inertial container, the inertia force transmission of the tunnel pipe body and the mass block is realized, and the inertia force is equivalent to the mass block part quality.

[0008] In one embodiment, the acceleration type inertial damper comprises a gear system in the protective shell, which comprises one or more first driving wheels, one or more second driving wheels, one or more first driven wheels, and one or more second driven wheels. The first driving wheels are respectively engaged with the toothed tracks on the top of the protective shell and the first driven wheels. The second driving wheels are respectively engaged with the toothed tracks on the bottom of the protective shell and the second driven wheels. The first driven wheels and the second driven wheels are engaged with each other.

[0009] In one embodiment, when the relative motion occurs between the tunnel tube and the mass block, the inertial force is transmitted through the toothed tracks on the top of the protective shell, the first driving wheels, the first driven wheels, the second driven wheels, the second driving wheels, and the toothed tracks on the bottom of the protective shell, and the equivalent mass of the mass block is obtained.

[0010] In one embodiment, the equivalent mass expression is:

[0011]

[0012] In the formula, m is the mass of each gear; r is the radius of the gear; and r is the diameter ratio of the driving wheel and the driven wheel. i and r j

[0013] In one embodiment, one end of the top of the protective shell is connected with a first fixed rod, which is connected to the bottom of the tunnel tube. The other end of the bottom of the protective shell is connected with a second fixed rod, which is connected to the mass block. Preferably, the protective shell can be a split structure.

[0014] In one embodiment, the first driving wheels and the second driving wheels are fixed to the protective shell through a main gear shaft, and the first driven wheels and the second driven wheels are fixed to the protective shell through a driven gear shaft.

[0015] In one embodiment, a metal spring system is further included, which is located between the tunnel tube and the mass block. The metal spring system comprises metal springs arranged between a first metal connecting plate and a second metal connecting plate. The first metal connecting plate is connected to the bottom of the tunnel tube, and the second metal connecting plate is connected to the mass block.

[0016] In one embodiment, the distance between the first metal connecting plate and the second metal connecting plate is adjusted to generate a tension force of the metal spring, which is used to adjust the natural frequency of the damper.

[0017] ​​In one embodiment, a damping energy dissipation system is further included, which is located between the lane layer of the tunnel tube body and the mass block; the damping energy dissipation system includes a metal rod and a metal elastic damping element sleeved on the metal rod, the metal rod is connected to the bottom of the lane layer of the tunnel tube body through a first metal fixing piece, and the metal elastic damping element is connected to the mass block through a second metal fixing piece.

[0018] In one embodiment, when the tunnel tube and the mass block move relative to each other, the metal rod and the metal elastic damping element are driven to move relative to each other, and the motion energy is dissipated by the metal elastic damping element.

[0019] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0020] 1) The inertial force of the tunnel tube is transferred to the vibration damper through an accelerating inertia vessel, thereby replacing part of the mass block, thereby reducing the overall mass and volume of the vibration damper and avoiding the impact of the large mass block on the tunnel tube;

[0021] 2) Since all parts are rigidly connected, the tunnel body and the vibration damper can be considered as a whole, which simplifies the load transfer process and reduces the difficulty of load calculation;

[0022] 3) The damping energy dissipation system in this application ensures that the energy of the entire tunnel is rapidly dissipated during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic diagram of the structure of an inertia tuned mass damper for a submarine suspended tunnel;

[0025] Figure 2 It is a schematic diagram of the metal spring system structure;

[0026] Figure 3 It is a schematic diagram of the structure of the accelerating inertia container;

[0027] Figure 4 It is a structural diagram of the damping energy dissipation system;

[0028] Figure 5 Schematic diagram of the metal mass block structure;

[0029] The serial number in the figure is explained: 1, the lane layer of the tunnel pipe body; 2, the metal spring system; 3, the acceleration type inerter; 4, the damping energy dissipation system; 5, the mass block; 201, the first metal connecting plate; 202, the metal spring; 203, the second metal connecting plate; 301, the second fixed rod; 302, the protective shell; 303, the first driving wheel; 304, the main gear shaft; 305, the second driven wheel; 306, the driven gear shaft; 307, the first fixed rod; 401, the first metal fixing piece; 402, the metal rod; 403, the metal elastic damping element; 404, the second metal fixing piece. DETAILED DESCRIPTION

[0030] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited. The meaning of "several" is one or more, unless otherwise explicitly and specifically limited.

[0033] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] See also Figure 1 This embodiment provides a submarine suspended tunnel inertia tuned mass damper, including an accelerating inertia container, a metal spring system, a damping energy dissipation system, and a mass block;

[0036] like Figure 2 The metal spring system shown achieves an initial tensioned state based on the lane-level distance from the mass block to the tunnel tube. When the tunnel tube moves upward (downward), the spring stretches (compresses) to transfer the tube's energy to the mass block.

[0037] like Figure 3 In the illustrated accelerating inertia container, relative motion between the mass block and the tunnel tube drives the protective housing to move. The gears on the top and bottom of the protective housing drive the movement of the gears, thereby transmitting the inertial force between the tunnel tube and the mass block. This inertia can replace part of the mass block's mass. Preferably, the protective housing is divided into upper and lower parts for easy disassembly and assembly.

[0038] like Figure 4 In the damping energy dissipation system shown, when the mass block and the tunnel tube undergo relative motion, the metal rods and the metal elastic damping elements can compress each other to dissipate the energy generated by the motion.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A submarine suspended tunnel inertia tuned mass damper, characterized in that: It includes an accelerating inertia chamber located between the lane layer of the tunnel tube and the mass block. The inertial force between the tunnel tube and the mass block is transmitted through a gear transmission system inside the accelerating inertia chamber. This inertial force is equivalent to a portion of the mass of the mass block. The accelerating inertia container includes a gear transmission system located within a protective housing. The gear transmission system includes one or more first driving wheels, one or more second driving wheels, one or more first driven wheels, and one or more second driven wheels. The first driving wheels are respectively meshed with the gear track at the top of the protective housing and the first driven wheels. The second driving wheels are respectively meshed with the gear track at the bottom of the protective housing and the second driven wheels. The first driven wheels and the second driven wheels are meshed and connected to each other. When relative motion occurs between the tunnel body and the mass block, inertial force is transmitted through the gear track on the top of the protective shell, the first driving wheel, the first driven wheel, the second driven wheel, the second driving wheel, and the gear track at the bottom of the protective shell, which can be equivalent to part of the mass of the mass block; The equivalent mass expression is: Where: is the mass of each gear; and is the diameter ratio of the driving wheel and the driven wheel; One end of the top of the protective shell is connected to a first fixing rod, which is connected to the bottom of the lane layer of the tunnel body; the other end of the bottom of the protective shell is connected to a second fixing rod, which is connected to the mass block; The first driving wheel and the second driving wheel are fixed to the protective housing through a main gear shaft, and the first driven wheel and the second driven wheel are fixed to the protective housing through a slave gear shaft.

2. The submarine floating tunnel inertia tuned mass damper according to claim 1, characterized in that: It also includes a metal spring system, which is located between the lane layer of the tunnel tube body and the mass block; the metal spring system includes a metal spring arranged between a first metal connecting plate and a second metal connecting plate, the first metal connecting plate is connected to the bottom of the lane layer of the tunnel tube body, and the second metal connecting plate is connected to the mass block.

3. The submarine floating tunnel inertia tuned mass damper according to claim 2, characterized in that: By adjusting the distance between the first metal connecting plate and the second metal connecting plate, the metal spring generates tensioning force for adjusting the natural frequency of the shock absorber.

4. The submarine floating tunnel inertia tuned mass damper according to claim 1, characterized in that: It also includes a damping energy dissipation system, which is located between the lane layer of the tunnel tube body and the mass block; the damping energy dissipation system includes a metal rod and a metal elastic damping element sleeved on the metal rod; the metal rod is connected to the bottom of the lane layer of the tunnel tube body through a first metal fixing piece, and the metal elastic damping element is connected to the mass block through a second metal fixing piece.

5. The submarine floating tunnel inertia tuned mass damper according to claim 4, characterized in that: When the tunnel tube and the mass block move relative to each other, the metal rod and the metal elastic damping element are driven to move relative to each other, and the motion energy is dissipated through the metal elastic damping element.

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