CN200975037Y - Viscous damping device type three-dimensional vibration isolating device - Google Patents

Abstract

The utility model relates to a viscous-damping type three-dimensional vibration insulation device which belongs to the structure shock insulation control and vibration control field. In the device, the upper surface and the lower surface of the lead core laminated rubber support are provided with a steel sealing plate (2), the steel sealing plate (2) on the lower surface is connected with the lower connecting plate (1) and the lower connecting plate is connected with the base; the steel sealing plate (2) on the upper surface is connected with the guide part (8); the top of the middle connecting plate (8) is provided with an upper connecting plate (14). The upper surface of the guide part 8 is provided with a cylinder type steel sealing plate (16), inside of which is provided with a cavity injected with elastic damping material (10). The guide bar (15) of the upper connecting plate goes through the cavity and the piston (13) on the guide bar is positioned in. The lower surface of the sleeve structure of the upper connecting plate and the external surface of the cylinder type steel sealing plate 16 are provided with a disc spring (9). The utility model is simple in structure, stable in performance and is applicable to secondary vibration of buildings induced by insulated track transportation.

Description

Viscous damper type three-dimensional vibration isolation device

technical field

The utility model relates to a viscous damper type three-dimensional vibration isolation device, which is mainly used for foundation vibration isolation of buildings such as houses and bridges, and belongs to the field of structure isolation control and vibration control.

Background technique

Rail traffic will induce secondary vibration of surrounding buildings, which will affect people's normal life. At present, the environmental vibration induced by rail transit mostly starts with the vibration source at home and abroad, but there are few studies on the vibration isolation device of the building foundation. Earthquake itself has multi-dimensional characteristics. At present, the three-dimensional base isolation device is mainly a series combination device of lead core laminated rubber bearing and thick rubber laminated rubber bearing or disc spring. The three-dimensional seismic isolation device "isolates" the superstructure of the building from the foundation, changes the dynamic characteristics of the superstructure, and can greatly reduce the dynamic effect of the earthquake on the superstructure, thereby achieving the shock absorption effect of "overcoming rigidity with softness". The seismic isolation of lead core laminated rubber bearings in the horizontal direction is a relatively mature engineering horizontal isolation technology, which provides damping force through the shear deformation of the lead core and dissipates the horizontal seismic energy. Thick rubber laminated rubber bearings or disc springs in the vertical direction can only reduce the vertical stiffness of the structure without providing vertical damping, which will not effectively dissipate the vertical energy of the earthquake, and cannot suppress the resonance zone magnification.

Utility model content

The utility model provides a viscous damper type three-dimensional vibration isolation device. The device can not only effectively provide vertical damping and suppress resonance amplification, but also can combine the characteristics of rail traffic vibration sources by changing the stiffness of disc springs. Compared with the vertical damping ratio, it is applied to isolate environmental vibration.

In order to achieve the above object, the utility model adopts the following technical solutions. The device mainly includes a lower connecting plate 1, a lead core laminated rubber bearing, a guide 8, a disc spring 9, and an upper connecting plate 14; wherein, the lead core laminated rubber bearing is composed of a lead core 3, a thin steel plate 5 and The rubber layer 6 is composed of sealing steel plates 2 on the upper and lower surfaces of the lead core laminated rubber bearing, and the sealing steel plate 2 on the lower surface of the lead core laminated rubber bearing is connected with the lower connecting plate 1, and the upper Bolt holes for connecting with the building foundation are provided, and the sealing steel plate 2 on the upper surface of the lead core laminated rubber bearing is connected to the guide 8, and the upper connecting plate 14 is arranged on the guide 8, and the center of the upper surface of the guide 8 is There is a guide rod part in the position. The upper connecting plate 14 is connected to the superstructure of the building. It is characterized in that: there is a groove on the upper surface of the guide rod part at the center of the upper surface of the guide part 8, and a cavity sealing steel plate (16) is arranged above the groove, and the guide rod part and the cavity of the guide part (8) The sealing plate 16 forms a cavity, and silicone oil or other viscoelastic damping materials 10 are injected into the cavity. The center of the lower surface of the upper connecting plate is provided with an upper connecting plate guide rod 15, and the upper connecting plate guide rod 15 runs through a cavity filled with silicone oil or other viscoelastic damping materials 10 formed by the guide piece 8 and the sealing steel plate 16, and A piston 13 is arranged on the upper connecting plate guide rod 15, and the piston 13 is also arranged in the cavity. A sleeve-type structure is arranged on the upper connecting plate with the guide rod 15 as the center. The sleeve-type structure is a hollow cylinder, and the upper circumference of the guide member 8 is arranged in the sleeve-type structure. Disc springs 9 are arranged on the lower surface of the sleeve structure and the outer surface of the guide member 8 , and air chambers 12 are arranged on the upper and lower ends of the guide rod 15 to reduce the pressure difference when the piston 13 moves up and down.

There is a gap between the piston 13 and the inner wall of the cavity formed by the guide 8 and the cavity sealing plate 16 or there is no gap between the piston 13 and the inner wall of the cavity, and a through hole is provided on the piston 13 . Vertical damping can be adjusted by changing the size of the gap or through hole.

The upper connecting plate guide rod 15 and the cavity formed by the guide piece 8 and the cavity sealing steel plate 16 form a cylindrical double-rod viscous damper, wherein the guide piece 8 is made into a cylinder, and the cylinder is filled with silicone oil or other viscous The elastic damping material 10 is provided with a piston 13 of a cylindrical double-rod viscous damper on the guide rod 15 of the upper connecting plate, and the piston 13 is in the elastic damping material 10 . The guide 8 is the guiding device of the disc spring 9, and provides the horizontal stiffness of the vertical vibration isolation device at the same time. Its diameter is slightly smaller than the inner diameter of the disc spring 9 to facilitate the installation of the disc spring 9. The guide 8 and the disc The contact surface of the spring 9 should ensure a small enough friction coefficient, so that the free sliding of the disc spring 9 can be guaranteed. There is a certain gap between the disc spring 9 and the lower surface of the sleeve structure of the upper connecting plate 14 to ensure the horizontal displacement of the disc spring 9 . The upper connecting plate 14 is connected with the superstructure of the building and transmits the self-weight of the building to the foundation through its surface in contact with the disc springs. The sleeve structure of the upper connecting plate 14 has sufficient thickness, so that the horizontal force generated by the external load can be transmitted to the guide member 8, and the contact area with the disc spring 9 can be ensured. The sleeve part of the upper connecting plate 14 wraps the entire part providing vertical damping, and contacts with the edge of the guide piece 8 to increase the horizontal stiffness of the vertical vibration isolation device.

The working principle of the utility model: the device generates vertical vibration on the upper connecting plate under the excitation of the vertical load, and this vibration drives the piston 13 to move up and down in silicone oil or other viscoelastic materials 10 through the upper connecting plate guide rod 15 , thus providing vertical damping force for the device.

The utility model is used in buildings with relatively light loads. By setting the parameters of the disc spring, a single disc spring can provide suitable vertical stiffness, so that the height of the entire device can be controlled, so that it can be safely and stably Work. The device adjusts its vertical stiffness by changing the disc spring parameters, and by changing the gap between the piston 13 and the inner wall of the cavity formed by the guide rod part of the guide 8 and the cavity sealing plate 16 or the piston The size of the through hole on 13 adjusts the vertical damping to achieve the purpose of effectively isolating vibration. The utility model can effectively control the vertical vibration of the building induced by rail traffic and the horizontal vibration caused by the earthquake, and at the same time reduce the vertical vibration of the building caused by the earthquake to a certain extent.

The beneficial effects of the utility model: the viscous damper with double rods of the cylinder is arranged inside the guide, and the vertical vibration speed of the vibration isolation device is the movement speed of the piston in the silicone oil or viscoelastic material, which can provide Larger damping force improves the vertical vibration isolation capability and reduces the vertical dynamic response of the structure; since the cylindrical double-rod viscous damper proposed by the utility model is located inside the guide, it can save space and improve design efficiency. , processing and installation are also more favorable; the utility model is developed on the basis of mature lead rubber bearings and viscous dampers, with stable performance and strong practicability, so it has a wide range of applications and can be applied to isolate rail transit The induced secondary vibration of the building, as well as any occasion where the existing three-dimensional seismic isolation device is applicable, can isolate the ground vibration and reduce the dynamic response of the structure.

Description of drawings

Fig. 1 shows the longitudinal section structure diagram of the first embodiment of the utility model

Fig. 2 shows the A-A sectional view of Fig. 1

Figure 3 shows a cross-sectional view of a disc spring

Fig. 4 shows the longitudinal sectional structure diagram of the second embodiment of the utility model

In the figure: 1. Lower connecting plate, 2. Sealing steel plate, 3. Lead core, 4. Hexagonal bolt, 5. Thin steel plate, 6. Rubber layer, 7. Outsourcing rubber, 8. Guide piece, 9. Disc spring, 10. Silica gel or other viscoelastic damping materials, 11. Gaps or pores, 12. Air cavity, 13. Piston, 14. Upper connecting plate, 15. Guide rod of upper connecting plate, 16. Cavity sealing plate.

Detailed ways

The implementation method of the present utility model will be further described below in conjunction with FIGS. 1 to 4 .

Example 1:

This embodiment mainly includes a lower connecting plate 1 , a lead core laminated rubber bearing, a guide 8 , a disc spring 9 , and an upper connecting plate 14 . Among them, the lead core laminated rubber bearing is composed of a lead core 3, a thin steel plate 5 and a rubber layer 6, and sealing steel plates 2 are arranged on the upper and lower surfaces of the lead core laminated rubber bearing, and the lead core laminated rubber bearing The sealing steel plate 2 on the lower surface is connected with the lower connecting plate 1, and the lower connecting plate 1 is provided with bolt holes for connecting with the foundation of the building, and the sealing steel plate 2 on the upper surface of the lead core laminated rubber bearing is connected to the guide piece 8 through the hexagonal bolt. For connection, an upper connection plate 14 is arranged on the upper surface of the guide member 8 . The upper connecting plate 14 is connected to the superstructure of the building. A cavity sealing plate 16 is provided at the center of the upper surface of the guide 8, the guide 8 and the cavity sealing plate 16 form a cavity, and silicone oil or other viscoelastic damping materials 10 are injected into the cavity. The center of the lower surface of the upper connecting plate is provided with an upper connecting plate guide rod 15, and the upper connecting plate guide rod 15 runs through the cavity filled with silicone oil or other viscoelastic damping materials 10 formed inside the guide piece 8 and the sealing steel plate 16, and A piston 13 is arranged on the upper connecting plate guide rod 15, and the piston 13 is also arranged in the cavity. A sleeve-type structure is arranged on the upper connecting plate with the guide rod 15 as the center. The sleeve-type structure is a hollow cylinder, and the upper part of the guide member 8 is arranged in the sleeve-type structure. Disc springs 9 are arranged on the lower surface of the sleeve structure and the outer surface of the guide member 8 , and air chambers 12 are arranged on the upper and lower ends of the guide rod 15 to reduce the pressure difference when the piston 13 moves up and down. There is a gap between the piston 13 and the inner wall of the cavity formed by the guide piece 8 and the cavity sealing plate 16, and the vertical damping can be adjusted by adjusting the size of the air gap.

Example 2:

The other parts of Embodiment 2 are the same as Embodiment 1, except that there is no gap between the piston 13 and the inner wall of the cavity formed by the guide 8 and the cavity sealing plate 16, and a through hole is opened on the piston 13. The vertical damping can be adjusted by changing the size of the through hole.

Claims (2)

1. The viscous damper type three-dimensional vibration isolation device mainly includes a lower connecting plate (1), a lead core laminated rubber bearing, a guide (8), a disc spring (9), and an upper connecting plate (14); Among them, the upper and lower surfaces of the lead core laminated rubber bearing are provided with sealing steel plates (2), and the sealing steel plate (2) on the lower surface of the lead core laminated rubber bearing is connected with the lower connecting plate (1), and the lower connecting plate (1) is provided with bolt holes for connecting with the foundation of the building, the sealing steel plate (2) on the upper surface of the lead core laminated rubber bearing is fixedly connected with the guide (8), and the upper surface of the guide (8) is provided with an upper Connecting plate (14), the upper surface circle center position of guide piece 8 has guide bar part, it is characterized in that: the upper surface of the guide bar part of the upper surface circle center position of guide piece (8) has a groove, arranges above the groove There is a cavity sealing plate (16), the guide rod part of the guide (8) and the cavity sealing plate (16) form a closed cavity, and silicone oil or other viscoelastic damping materials (10) are injected into the cavity The center of the lower surface of the upper connecting plate (14) is provided with an upper connecting plate guide rod (15), and the upper connecting plate guide rod (15) runs through the guide rod part of the guide (8) and the cavity sealing steel plate (16) A cavity composed of silicon oil or other viscoelastic damping materials (10) is injected inside, and a piston (13) is arranged on the upper connecting plate guide rod (15), and the piston (13) is also arranged in the cavity; On the upper connecting plate (14), a sleeve-type structure is arranged with the guide rod (15) as the center, and the upper part of the guide rod part of the guide (8) is arranged in the sleeve-type structure. Disc springs (9) are provided on the lower surface and the outer surface of the guide rod portion of the guide member (8), and air chambers (12) are provided at the upper and lower ends of the guide rod (15) to reduce the pressure of the piston (13). Pressure differential for up and down motion. 2. The viscous damper type three-dimensional vibration isolation device according to claim 1, characterized in that: the piston (13) is composed of the guide rod part of the guide (8) and the cavity sealing plate (16) Leave an air gap between the inner walls of the cavity or leave no air gap between the piston (13) and the inner wall of the cavity, and have a through hole on the piston (13).

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