CN210032114U - Vertical regulation shock insulation support - Google Patents

Abstract

The utility model discloses a vertical regulation isolation bearing, including all seting up notched last casing and lower casing, go up the casing and cup joint in the inferior valve internal and go up the casing and be formed with hollow structure down between the casing, go up and be provided with at least one isolation spring and at least one adjustable vaulting pole down between the casing, realize going up vertical relative motion and transmission horizontal shear force between casing and the inferior valve casing. The support can enable the shock insulation support of the large-span space structure to meet the requirement of low rigidity and shock insulation under the action of earthquake while meeting the requirement of high rigidity of static bearing, avoids the problem that the support rigidity is too low at ordinary times to influence deformation and bearing capacity performance, avoids the influence of the support with higher rigidity on the shock insulation effect under the action of earthquake, and is convenient for realizing the vertical shock insulation system of the large-span space structure.

Description

Vertical regulation shock insulation support

Technical Field

The utility model belongs to the technical field of structural vibration control shock insulation, especially, relate to a vertical regulation isolation bearing of intelligence that has vertical shock isolation ability, compromise quiet power bearing capacity and shock isolation ability.

Background

The seismic isolation technology is a technology that a flexible seismic isolation support is adopted to connect an upper structure of a building and a foundation, so that the upper structure is protected from being damaged by an earthquake. Under the action of earthquake, the vibration response amplitude of the structure is closely related to the ratio (frequency ratio) of the earthquake excitation frequency to the natural vibration frequency of the structure, as shown in fig. 1. When the frequency ratio is near 1, the structural response is obviously higher than the seismic amplitude, namely, a resonance phenomenon occurs; when the frequency ratio is less than 1, the structural response is slightly higher than the seismic amplitude; at frequency ratios greater than 1.414, the structural response is lower than the seismic amplitude, and the structural response decreases as the frequency ratio increases. The natural frequency of vibration of buildings in general houses and offices is high. The vibration isolation technology changes the vibration characteristic of the structure by arranging the vibration isolation support, so that the natural vibration frequency of the structure is reduced, the frequency ratio is improved, the earthquake response of the structure is reduced, and the vibration isolation effect is realized. For the vertical vibration response of a large-span space structure, the vertical natural vibration frequency is lower, and a low-rigidity vibration isolation support with lower frequency needs to be arranged to reduce the vertical natural vibration frequency of the structure, improve the frequency ratio and realize the vibration isolation effect.

However, the large-span space structure support generally bears a large vertical counter force, and the low-rigidity shock insulation support can generate a large vertical deformation after being directly applied, so that the structural deflection exceeds the standard limit, and the structural bearing capacity is influenced. In order to ensure the requirements of structural deformation and bearing capacity, the structural support is required to have higher vertical rigidity, and even a rigid connection support is required. And the support with higher rigidity or the rigid connection support can not realize the shock insulation effect. Therefore, it is necessary to provide an adjustable vertical seismic isolation support which has both high rigidity required by the structure in a normal bearing state and low rigidity required by the earthquake action, and intelligent adjustment can be realized according to different states.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the prior art, provide a vertical regulation isolation bearing, can make and stride spatial structure's isolation bearing greatly satisfy low rigidity shock insulation demand under the earthquake action when satisfying the high rigidity requirement that static bore, avoid bearing rigidity low influence at ordinary times to warp and bearing capacity performance, avoid simultaneously the support influence shock insulation effect of higher rigidity under the earthquake action, be convenient for stride the realization of the vertical shock insulation system of spatial structure greatly.

The utility model aims at realizing through the following technical scheme:

the utility model provides a vertical regulation isolation bearing, includes all sets up notched last casing and lower casing, goes up the casing and cup joints in the inferior valve internal and go up the casing and be formed with hollow structure down between the casing, go up and be provided with at least one isolation spring and at least one adjustable vaulting pole between the casing down, realize going up vertical relative motion and transmission horizontal shear force between casing and the inferior valve casing.

Furthermore, the adjustable stay bar adopts a magneto-rheological principle, is provided with an electromagnet and a controller, can adjust an external current through the controller, controls the size of a magnetic field, and adjusts the mechanical property of the stay bar to a rigid connection state of a high-stiffness spring or a non-connection state of a low-stiffness spring.

Furthermore, the corresponding upper shell and the corresponding lower shell are both circular or polygonal.

Compared with the prior art, the utility model discloses a beneficial effect that technical scheme brought is:

the utility model discloses the creative effective method that adopts magnetic current to become vaulting pole and change vertical shock insulation support rigidity. Can avoid bearing rigidity at ordinary times to cross low influence deformation and bearing capacity performance, avoid simultaneously the support of higher rigidity to influence the shock insulation effect under the earthquake action, realize taking into account the adjustable vertical shock insulation support of the required low rigidity under required high rigidity and the earthquake action of structure bearing state at ordinary times to need can realize intelligent regulation according to the difference of state, be applicable to the vertical shock insulation system of stride spatial structure greatly.

Drawings

FIG. 1 is a graph of vibration response amplitude and the ratio of seismic excitation frequency to the natural frequency of the structure (frequency ratio).

Fig. 2 is a schematic structural view of the seismic isolation bearing of the present invention.

Reference numerals: 1-adjustable stay bar, 2-shock insulation spring, 3-upper shell and 4-lower shell.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 2 shows the utility model discloses the vertical isolation bearing's of intelligent regulation dissection picture.

Referring to fig. 2, the utility model discloses a vertical regulation isolation bearing, including a plurality of adjustable vaulting poles 1, a plurality of isolation springs 2, an upper housing 3, a lower housing 4. Go up casing 3 and lower casing 4 and be connected through adjustable vaulting pole 1 of intelligence and shock insulation spring 2, can satisfy vertical relative motion and can transmit horizontal shear force between last casing 3 and the lower casing 4. In this embodiment, the upper housing 3 and the lower housing 4 are both provided with grooves correspondingly, and the upper housing 3 is sleeved in the lower housing 4.

The adjustable stay bar 1 can adopt a magneto-rheological principle, is provided with an electromagnet and an intelligent controller, and can intelligently adjust the magnitude of an external current control magnetic field. The controller may be integrated in the adjustable stay 1 or may be arranged otherwise. When the external current is high, the intelligent adjustable stay bar 1 is under the action of a strong magnetic field, the magnetorheological fluid is in a high-viscosity state, and the mechanical property of the adjustable stay bar 1 is similar to that of a high-stiffness spring or rigid connection. When the current is low or the current is cut off, the adjustable stay bar 1 is under the action of a low magnetic field, the magnetorheological fluid is in a low-viscosity state, and the mechanical property of the adjustable stay bar 1 is similar to that of a low-stiffness spring or is not connected.

The stiffness of the damping spring 2 is lower in this embodiment. Under the bearing state at ordinary times, keep adjustable vaulting pole 1 impressed current high, intelligent adjustable vaulting pole 1 is similar to high rigidity spring or rigid coupling, and after adjustable vaulting pole 1 and shock insulation spring 2 connected in parallel, mechanical properties is equivalent to high rigidity spring or rigid coupling. When an earthquake is detected, the intelligent controller of the adjustable support rod 1 reduces or cuts off an external current, the adjustable support rod 1 is converted into a low-stiffness spring or is not connected, and after the adjustable support rod 1 is connected with the shock insulation spring 2 in parallel, the mechanical property of the adjustable support rod 1 is equivalent to that of the low-stiffness spring. The intelligent adjustment of the vertical rigidity of the intelligent adjustment vertical shock insulation support is realized through the adjustment of the state of the adjustable support rod 1, the requirements of high rigidity required under the normal bearing state of the structure and low rigidity required under the earthquake action are met, and the intelligent adjustment in different states is realized.

Specifically, the number and the layout of the adjustable support rods 1 and the shock insulation springs 2 can be adjusted according to actual engineering requirements, and the adjustable support rods 1 and the four shock insulation springs 2 are not limited to the form shown in fig. 2, or the form that the adjustable support rods 1 are arranged in the center and the shock insulation springs 2 are arranged on the periphery.

The shapes of the upper shell 3 and the lower shell 4 can be adjusted according to actual engineering requirements, and are not limited to the circular shape shown in fig. 2, and can also be rectangular or polygonal shapes.

Specifically, the adjustable stay bar 1 is not limited to the magnetorheological principle, such as hydraulic or magnetic stretching, to realize intelligent control and rigidity adjustment.

When the utility model discloses a vertical isolation bearing of intelligent regulation is used for striding spatial structure greatly when, its mounting method is:

the intelligent regulation vertical shock insulation support forms a whole, is directly installed in the large-span space structure support, is connected with the space structure through the upper shell 3, and is connected with the lower support structure through the lower shell 4 to form a vertical shock insulation support, so that a large-span space structure vertical shock insulation system is formed.

The present invention is not limited to the above-described embodiments. The above description of the embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above embodiments are merely illustrative and not restrictive. Without departing from the spirit of the invention and the scope of the appended claims, the person skilled in the art can make many changes in form and detail within the teaching of the invention.

Claims (3)

1. The utility model provides a vertical regulation isolation bearing, its characterized in that, includes all sets up notched last casing and lower casing, goes up the casing and cup joints in the inferior valve internal and go up the casing and be formed with hollow structure down between the casing, go up and be provided with at least one isolation spring and at least one adjustable vaulting pole between the casing down, realize going up vertical relative motion and transmission horizontal shear force between casing and the lower casing.

2. The vertically-adjustable seismic isolation bearing according to claim 1, wherein the adjustable stay bar adopts a magnetorheological principle, is provided with an electromagnet and a controller, can adjust an external current through the controller, controls the size of a magnetic field, and adjusts the mechanical property of the stay bar to a rigid connection state from a high-stiffness spring or a non-connection state from a low-stiffness spring.

3. The vertically adjustable seismic isolation bearing of claim 1, wherein the upper housing and the lower housing are circular or polygonal in shape.

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