CN115787879A - Vertical lift-off adjustable shock insulation support - Google Patents

Abstract

The invention provides a vertical lift-off controllable shock-isolation support, relates to the technical field of building shock-isolation, and is designed to solve the problem that the shock-isolation support produces relatively large tensile stress and the interior of the support is damaged. The vertical lift-off adjustable shock-isolation support includes a support body, and the top of the support body is connected to the lift-off buckle cover through a vertical tension control component, and the vertical tension control component is arranged on the adjustable When the lift-off button cover moves upward, it is in the force transmission path from the lift-off button cover to the support body; the lift-off button cover is configured to be fixedly connected to the bottom of the upper pier. The vertical lift-off controllable shock-isolation support provided by the invention can realize the controllable lift-off of the upper pier and release the excessive tensile stress on the traditional support.

Description

Vertical lift-off adjustable shock-isolation support

technical field

The invention relates to the technical field of building shock isolation, in particular to a shock isolation support.

Background technique

Earthquake is one of the important natural disasters that seriously endanger human existence. The use of seismic isolation technology can effectively reduce the horizontal seismic effect of the overall structure. At present, seismic isolation technology has been widely used in our country. The most widely used seismic isolation device in my country is the laminated rubber seismic isolation bearing, which is composed of thin rubber layers and thin steel plate layers alternately stacked. The material characteristics determine the tensile strength and tensile bearing capacity of the rubber seismic isolation bearing. Therefore, my country's "Code for Seismic Design of Buildings" (GB50011-2010) stipulates that the tensile stress of the rubber isolation bearing should not be greater than 1MPa. However, when the height-to-width ratio of the structure is large or the seismic action is large, the rubber isolation bearing will inevitably produce a large tensile stress. At this time, the interior of the support will be damaged, which will seriously affect the performance of the support and even the seismic isolation effect of the structure. . In order to solve this problem, many scholars at home and abroad have proposed two kinds of tensile stress control ideas and devices: "resistance" and "lift-off".

Existing technical solution 1: "resistance" type device

At present, most of the tensile measures of seismic isolation resistance bearings are realized by setting guide rails and limit devices. For example, Zhang Longfei and others have designed a rail-type tensile device (RTD) that provides additional tensile stiffness for rubber bearings. The mechanism of this device is For, when the rail-type tensile rubber bearing is pulled, the tension is mainly borne by the RTD, thereby reducing the tension effect of the rubber bearing (Zhang Longfei, Tao Zhong, Pan Wen, etc. Mechanical properties of the rail-type tensile rubber bearing Research [J]. Vibration and Shock, 2018,37(22):122-127). Tian Jie et al. obtained a vertical restraint reinforced tensile shock-isolation device by connecting the laminated rubber bearing in parallel with the vertical lock wire slider guide rail. Always maintain an absolutely vertical state, when the support is stretched, it bears the tensile force together with the isolation support (Tian Jie, Liu Yadong, Song Xiaosheng, et al. Experimental research on the tensile performance of the vertical cable tension isolation device[J]. Industrial Architecture, 2018, 48(6):7-10). Chen Peng et al. connected the laminated rubber bearing in parallel with two displacement limiting systems through locks, so as to limit the upward movement trend during the tensile process of the bearing (Chen Peng, Zhou Ying, Liu Lu, et al. Experimental study on the mechanical performance of the tensile device of seismic bearings [J]. Journal of Building Structures, 2017, 38(7): 113-119). This type of device can guarantee the anti-overturning ability of the structure, but it often needs to have high rigidity and tensile bearing capacity. The structure of the guide rail type tensile isolation support is complicated, and the installation space of the support is too high, and its horizontal deformation range is limited. The limitation of the length of the guide rail requires a reasonable structure to avoid affecting the horizontal vibration isolation capability of the support.

Existing technical scheme two: "lift off" type device

At present, the measures for the lift-off displacement of the shock-isolation lift-off support are mostly realized by arranging vertical lift-off devices and limit devices, such as CN108678183A (public date 2018-10-19) discloses the setting of lift-off limit pins Scheme, CN209637008U (public date 2019-11-15) discloses the scheme of setting limit ring plate, CN209670111U (public date 2019-11-22) discloses the scheme of setting limit nut, the concept of this type of limit device is When the upper structure exceeds the expected lift-off displacement, the limit device is in contact with the upper cover of the support, and the support bears the pulling force to limit the lift-off displacement. This type of device does not require tensile bearing capacity for the device, but the device has a complex structure and requires a large displacement to release the tensile stress, which will have a certain adverse effect on the structure's anti-overturning effect. Therefore, some scholars have proposed to release the vertical deformation of the superstructure, so that the structure can form a certain swing mechanism, and use the gravitational potential energy of the structure to offset the tensile stress. This idea can solve the problem of bearing tension to a certain extent. However, when the released vertical displacement is too large, a large overturning force will be generated on the superstructure, especially when the support undergoes large horizontal deformation and the vertical lift-off displacement is too large. The tendency of the horizontal deformation direction to incline will lead to the risk of overall overturning of the earthquake-isolated building.

Contents of the invention

The purpose of the present invention is to provide a vertical lift-off controllable seismic isolation support to solve the technical problem that the existing seismic isolation support produces relatively large tensile stress and the interior of the support is damaged.

The vertical lift-off adjustable shock-isolation support provided by the present invention includes a support body, and the top of the support body is connected to a lift-off buckle cover through a vertical tension control component, and the vertical tension control component It is arranged in the force transmission path from the liftable button cover to the support body when the liftable button cover moves upward; the liftable button cover is configured to be fixedly connected with the bottom of the upper pier.

The beneficial effects brought by the vertical lift-off adjustable shock-isolation bearing of the present invention are:

By setting the vertical tension control component, the support body can bear an upward, adjustable and designable tension during the upward movement of the upper pier. The constant bearing capacity of the vertical tension control component in the yield stage makes the tensile force of the support body in series with it constant and controllable, and at the same time improves the anti-overturning ability; the zero stiffness characteristics and strong compression deformation capacity of the vertical tension control component after yield can be Realize the controllable lift-off of the upper pier and release the excessive tensile stress on the traditional support; the compression energy dissipation capacity in the yield stage can release the vertical deformation requirement of the same tensile stress, which is almost The undamped state can not only consume deformation energy, but also provide damping to control the overturning of the overall structure.

In a preferred technical solution, the vertical tension adjustment assembly includes a vertical tension adjustment control and a tension transmission member, and the tension transmission member includes a fixed installation part, a force transmission part and a compression part that are sequentially fixedly connected from top to bottom , the fixed installation part is fixedly connected with the lift-off button cover, and the force transmission part is used to connect the compression part and the fixed installation part in series and transmit the pulling force on the lift-off button cover to the compression part , the compression part is used to apply pressure to the vertical tension adjustment control from the bottom of the vertical tension adjustment control, and the top of the vertical tension adjustment control is in contact with the top of the support body .

In a preferred technical solution, a pressure transmission plate is provided between the compression part and the vertical tension adjustment control, and the compression part is used to compress the pressure transmission from below the vertical tension adjustment control. The plate applies pressure to the vertical tension adjustment control.

In a preferred technical solution, the vertical tension adjustment control is provided with a through hole penetrating up and down, and the force transmission part passes through the through hole.

In a preferred technical solution, the material of the vertically adjustable control is an energy-dissipating material, and the energy-dissipating material is one of aluminum foam, aluminum foam-polyurethane composite material, and viscoelastic material.

In a preferred technical solution, the fixed installation part is welded to the liftable buckle cover, and the compression part is a nut screwed to the external thread part of the force transmission part.

In a preferred technical solution, the vertical lift-off adjustable shock-isolation support further includes a horizontal limit ring plate fixedly connected to the lift-off buckle cover, and the horizontal limit ring plate is arranged on the top of the support body radially outer side.

In a preferred technical solution, a low-friction plate fixedly connected to the horizontal limiting ring plate is provided between the horizontal limiting ring plate and the top of the support body.

In a preferred technical solution, the low-friction plate is made of polytetrafluoroethylene.

In a preferred technical solution, the height of the low-friction plate is equal to the height of the horizontal limiting ring plate, and the height of the horizontal limiting ring plate is greater than or equal to the vertical Allowable amount of deformation.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings that need to be used in the description of the embodiments or the background technology will be briefly introduced below. Obviously, the drawings in the following description are only the present invention. For the embodiments of the invention, those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic structural diagram of a vertical lift-off adjustable shock-isolation support provided by an embodiment of the present invention;

Fig. 2 is the stress-strain relationship curve of the monotonic compression experiment and the cyclic compression experiment of the aluminum foam material used as the vertical tension adjustment control in the vertical lift-off adjustable seismic isolation bearing provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of the state of the vertical lift-off adjustable shock-isolation bearing in the compression-shear state provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the state of the vertical lift-off adjustable shock-isolation bearing in the tension-shear state provided by the embodiment of the present invention;

Explanation of reference signs:

11-lift-off buckle cover; 12-upper connection anchor bolt; 13-horizontal limit ring plate; 14-low friction plate;

20-support body; 21-upper cover plate; 22-lower cover plate; 23-lower connection anchor bolt;

30-vertical tension control assembly; 31-vertical tension control; 32-tension transmission member; 33-pressure transmission plate;

98-upper buttress; 99-lower buttress.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 1 is a schematic structural diagram of a vertical lift-off adjustable shock-isolation support provided by an embodiment of the present invention. As shown in Figure 1, the vertical lift-off adjustable shock-isolation support provided by the embodiment of the present invention includes a support body 20, and the top of the support body 20 is connected to the lift-off buckle cover 11 through a vertical tension control component 30. connected, the vertical tension control component 30 is arranged in the force transmission path from the liftable buckle cover 11 to the support body 20 when the liftable buckle cover 11 moves upward; the liftable buckle cover 11 is configured to be connected with the upper support The bottom of the pier 98 is fixedly connected.

Among them, the bearing body 20 in this embodiment can be various types of rubber vibration-isolation bearings, lead-core rubber vibration-isolation bearings, laminated rubber vibration-isolation bearings, etc., which have vertical tensile stiffness and High-strength shock-isolation bearing, such a shock-isolation bearing has an upper cover plate 21 and a lower cover plate 22, the upper cover plate 21 is the top of the bearing body 20, the upper cover plate 21 and the lower cover plate 22 are steel plates, The lower cover plate 22 is configured to be fixedly connected to the lower abutment 99 through the lower connection anchor bolt 23 and the nut. The detachable buckle cover 11 is configured to be fixedly connected to the upper abutment 98 through the upper connection anchor bolt 12 and a nut.

When the vertical lift-off controllable shock-isolation support of this embodiment is under tension as a whole, the vertical tension adjustment control 31 is under pressure as a whole. Since the vertical tension adjustment control 31 is connected in series with the support body 20, the vertical tension The pressure on the regulating member 31 is equal to the tension on the support body 20 . By controlling the ratio of the compression area of the vertical tension adjusting control 31 to the area of the support body 20, the tensile stress borne by the support can be controlled. For example, if the yield stress of the vertical tension adjustment control 31 is 6Mpa and the area ratio is 0.05, the tensile stress of the support body 20 can be controlled to be 0.3Mpa.

By arranging the vertical tension regulating assembly 30 , the support body 20 can bear an upward, adjustable and designable tension during the upward movement of the upper pier 98 . The constant bearing capacity of the vertical tension control component 30 in the yield stage makes the tensile force of the support body 20 in series with it constant and controllable, and at the same time improves the anti-overturning capability; the vertical tension control component 31 has zero stiffness characteristics and strong compression after yield The deformation capacity can realize the controllable lift-off of the upper pier 98, releasing the excessive tensile stress on the traditional support; the compression energy dissipation capacity in the yield stage can release the vertical deformation requirement of the same tensile stress, compared with the related technology There is almost no damping in the initial stage, which can not only consume deformation energy, but also provide damping and control the overturning of the overall structure.

The vertical lift-off controllable shock-isolation bearing combines the advantages of "resistance" and "lift-off", puts forward the concept of adjustable tensile stress, and introduces the vertical tension control component 30 to realize the limited adjustment of the support body 20. The controllable pulling and lifting can realize the controllability and design of the tensile stress of the support body 20 , the vertical lifting and deformation capacity, and the energy dissipation and shock absorption capacity. Moreover, the vertical lift-off controllable shock-isolation support has the functions of adjusting the vertical lift-off displacement and a certain degree of vertical shock absorption, and makes full use of the limited tensile capacity of the support body 20. The filling of composite energy-dissipating materials has good flexibility and operability, and further ensures the safety of the seismic isolation structure, which can promote the vigorous promotion of seismic isolation technology in the field of high-rise buildings and high-intensity areas. economic and social benefits.

As shown in Figure 1, preferably, the vertical tension regulating assembly 30 includes a vertical tension regulating control 31 and a tension transmission member 32, and the tension transmission member 32 includes a fixed installation part and a force transmission part fixedly connected in sequence from top to bottom. and the compression part, the fixed installation part is fixedly connected with the detachable buckle cover 11, the force transmission part is used to connect the compression part and the fixed installation part in series and transmit the pulling force on the detachable buckle cover 11 to the compression part, and the compression part is used for Pressure is applied to the vertical tension adjustment control 31 from below the vertical tension adjustment control 31 , and the top of the vertical tension adjustment control 31 abuts against the top of the support body 20 .

Among them, the fixed installation part is a truncated cone with a large upper part and a smaller lower part, which can be lifted off the button cover 11 to cooperate with the upper part and the lower part of the smaller taper hole, and bear the pulling force of the pulling force transmission part 32 that can be lifted away from the button cover 11, and the force transmission part Then it is rod-shaped, preferably round rod-shaped. The transverse size of the compression part is larger than that of the force transmission part, so as to directly or indirectly transmit the pressure to the vertical tension adjusting control 31 .

By setting the tension transmission member 32, and using the fixed installation part at the top of the tension transmission member 32 to be fixedly connected with the detachable buckle cover 11, the compression part at the bottom exerts pressure from the bottom of the vertical tension adjustment control 31, which can be lifted and detached. When the buckle cover 11 moves upward relative to the top of the support body 20, the pulling force of the lift-off buckle cover 11 on the tension transmission member 32 is converted into the pressure on the pull-adjusting control 31, so that the lift-off buckle cover 11 is deformed , consumes energy, and also transmits the pulling force to the top of the support body 20, so that the support body 20 is subjected to an adjustable and designable tensile stress to prevent the support body 20 from being damaged.

As shown in Figure 1, preferably, a pressure transmission plate 33 is provided between the compression part and the vertical tension adjustment control 31, and the compression part is used to compress the pressure transmission plate 33 from the bottom of the vertical tension adjustment control 31 to the vertical Apply pressure to the pull adjustment control 31 .

Wherein, in this embodiment, the area of the pressure transmission plate 33 may be significantly larger than the area of the upward surface of the compression portion.

By setting the pressure transmission plate 33, the pressure receiving area of the vertical tension adjustment control 31 can be enlarged, and the material of the vertical tension adjustment control 31 can be fully utilized, so that the vertical tension adjustment control 31 can bear more pressure, and The pressure is converted to a pressure against the top of the stand body 20 , thereby taking advantage of the limited tensile capacity of the stand body 20 .

As shown in FIG. 1 , preferably, the vertical tension adjustment control 31 is provided with a through hole passing through up and down, and the force transmission part passes through the through hole.

A through hole is set in the vertical tension adjusting control 31, so that the force transmission part passes through the through hole, then the compression part can apply pressure to the vertical tension adjusting control 31 in the range of 360° in its circumferential direction, so that the vertical The tension-bearing area of the adjustable control 31 is larger, and the force is more uniform. At the same time, the force received by the force transmission part passes through the center of its horizontal section, so as to avoid bending damage of the force transmission part due to unbalanced load as much as possible, and improve the reliability of the vertical tension control assembly 30 .

In another implementation mode, the vertical tension adjusting control 31 may not be provided with a through hole, and tension transmission members 32 are provided on opposite sides of the vertical tension adjustment control 31 in the horizontal direction. The pressure transmission plate 33 exerts a force, so that the pressure transmission plate 33 exerts pressure on the vertical tension adjusting control 31 . Alternatively, the vertical tension-adjusting control 31 and the tension transmission member 32 are alternately distributed in the circumferential direction, and each tension transmission member 32 transmits the pressure to the vertical tension adjustment through the pressure transmission plate 33 in the tangential direction of the above-mentioned circumference. The member 31 or directly transmits the pressure to the vertical pull adjustment control 31 in the tangential direction of the circumference.

As shown in FIG. 1 , preferably, the material of the vertical tension adjustment control 31 is an energy-dissipating material, and the energy-dissipating material is one of aluminum foam, aluminum foam-polyurethane composite material, and viscoelastic material.

The inventors carried out monotonic compression experiments and cyclic compression experiments on aluminum foam materials. The stress-strain relationship curve is shown in Figure 2, showing low yield force, low stiffness after yield, strong compression deformation capacity and energy dissipation capacity.

The above-mentioned types of energy-consuming components are easy to produce and easy to install, especially the foamed aluminum material is relatively mature and easy to be popularized in large quantities.

As shown in FIG. 1 , preferably, the fixed installation part is welded to the detachable button cover 11 , and the compression part is a nut screwed to the external thread part of the force transmission part.

Welding the fixed installation part to the liftable buckle cover 11 can improve the strength of the fixed installation part and prevent it from swinging relative to the liftable buckle cover 11 when it is subjected to a force other than the axial direction. And the compression part is selected as a nut, and the screw connection between the nut and the force transmission part is not only convenient for the installation of the vertical tension adjustment control 31 first, but also can be relatively independently installed on multiple vertical tension adjustment controls 31 as required. At this time, the vertical tension regulating assembly 30 of the optional installation part. For example, if eight vertical tension adjustment controls 31 are evenly distributed in the axial direction, four of them can be selected to be installed, and the four vertical tension adjustment controls 31 are installed at intervals. Or, although the vertical tension adjustment control 31 is a ring-shaped whole, each pressure transmission plate 33 is also eight relatively independent pieces, and nuts and pressure transmission plates 33 are only arranged on four spaced force transmission parts. Then not all the corresponding regions of the vertical tension adjustment control 31 have the same deformation. The region with nuts and pressure transmission plate 33 has larger deformation, while the region without nuts and pressure transmission plate 33 has smaller deformation. Different stiffness options are available for vertical lift-off adjustable isolators.

As shown in Figure 1, preferably, the vertical lift-off adjustable shock-isolation support also includes a horizontal limit ring plate 13 fixedly connected to the lift-off buckle cover 11, and the horizontal limit ring plate 13 is arranged on the support body 20 radially outside of the top.

By setting the horizontal limit ring plate 13 that can be lifted away from the buckle cover 11 and fixedly connected, the relative radial position of the top of the horizontal limit ring plate 13 and the support body 20 can be limited, so that the horizontal limit ring plate 13 and the support can be used The seat body 20 transmits the horizontal shear force, so as to effectively transmit the shear force generated by the large horizontal deformation of the seat body 20 to the upper pier 98 .

As shown in FIG. 1 , preferably, a low-friction plate 14 fixedly connected to the horizontal limiting ring plate 13 is provided between the horizontal limiting ring plate 13 and the top of the support body 20 .

Specifically, for example, the fixed connection of the two can be realized by bonding the annular low-friction plate 14 on the horizontal limiting ring plate 13 or fixing the low-friction plate 14 with screws.

The low-friction plate 14 is fixedly connected with the horizontal limit ring plate 13, so that when the top of the support body 20 moves vertically relative to the lift-off buckle cover 11, the entire vertical lift-off controllable shock-isolation support deforms horizontally, resulting in The friction force generated by the pressure between the top of the support body 20 and the horizontal limit ring plate 13 will also be significantly reduced, and the vertical lifting process will not be significantly disturbed by the friction force generated by the horizontal shear, so that the vertical lifting and horizontal The shear decoupling enables the vertical lift-off process to be fully carried out.

Preferably, the low-friction plate 14 is made of polytetrafluoroethylene.

The chemical properties of polytetrafluoroethylene are stable, and it will not be chemically corroded when used for many years, and the coefficient of friction with the steel material of the upper cover plate 21 as the top of the support body 20 is low, which can fully reduce the contact between the low friction plate 14 and the support. The frictional force of the seat body 20 is beneficial to fully carry out the vertical lift-off process.

In another implementation manner, the low-friction plate 14 can also be made of nylon and other plastic materials with a low coefficient of friction with steel.

As shown in Figure 1, preferably, the height of the low-friction plate 14 is equal to the height of the horizontal limit ring plate 13, and the height of the horizontal limit ring plate 13 is greater than or equal to the vertical deformation of the adjustable shock-isolation support when it is lifted vertically allowable amount.

Setting the height of the low-friction plate 14 and the horizontal limit ring plate 13 in this way can ensure that the top of the support body 20 does not break away from the limit of the horizontal limit ring plate 13 during the vertical lift-off process, and the low-friction plate is always held by the low friction plate. 14 plays a role in reducing frictional resistance, thereby ensuring that the shear force generated by the large horizontal deformation of the support body 20 can be effectively transmitted to the upper pier 98 during the vertical lift-off process.

In addition, the liftable buckle cover 11 , the horizontal limiting ring plate 13 , and the pressure transmission plate 33 are all made of metal materials such as steel plates.

The action principle of this embodiment is:

The vertical lift-off adjustable shock-isolation bearing has the following three working modes:

(1) Conventional use mode: the vertical lift-off adjustable shock-isolation support mainly bears vertical pressure, the vertical tension control component 30 does not play a role, the lift-off buckle cover 11 is directly adjacent to the upper cover plate 21, and the vertical The pressure is directly transmitted to the upper cover plate 21 of the support body 20 through the liftable buckle cover 11 . At this point, as shown in Figure 1.

(2) The support is in compression-shear mode under earthquake action: the vertical lift-off controllable isolation support mainly bears vertical pressure and horizontal shear force, and the pressure can still be directly transmitted to the support body 20 through the lift-off buckle cover 11 The upper cover plate 21, the upper buttress 98 transmits the shear force to the lift-off button cover 11 through the upper connection anchor bolt 12, and the lift-off button cover 11 passes through the horizontal contact with the upper cover plate 21 of the support body 20, and The tensile force transmission member 32 and the horizontal limit ring plate 13 transmit the shear force to the support, and the stressed state is shown in FIG. 3 .

(3) Tension-shear mode under earthquake action: the vertical lift-off controllable seismic isolation bearing mainly bears vertical tension and horizontal shear force at this time, and the upper pier 98 and the lift-off buckle cover 11 move upward and can be lifted off The buckle cover 11 is separated from the upper cover plate 21 of the support body 20 . The tension exerts force on the upper cover plate 21 of the support body 20 through the liftable buckle cover 11 , the tension transmission member 32 , the pressure transmission plate 33 and the vertical tension adjustment control 31 . At this time, the tension transmission member 32 and the pressure transmission plate 33 will transmit the upward tension to the aluminum foam as the vertical tension adjustment control 31, so that it is in a state of compression and energy consumption. The mechanical characteristics of the foamed aluminum itself determine that the pressure it receives can be kept basically constant within the lift-off range. At this time, the middle part of the support body 20 will receive a constant upward pulling force; Force can effectively reduce the vertical lift-off displacement of the liftable buckle cover 11 and the upper buttress 98. Designers can adjust and select the rigidity of foamed aluminum according to the demand. The greater the rigidity, the smaller the vertical lift-off displacement. But at the same time, the greater the tensile force of the support body 20, the designer can adjust the stiffness of the foamed aluminum within the range of 1Mpa of the tensile stress of the support body 20, and then adjust the upward lift-off displacement, making full use of the limited tensile capacity of the support. The overall overturning risk of the structure is greatly reduced. At the same time, the vertical tension control 31 can also reduce the vertical acceleration of the structure to a certain extent through the vertical hysteretic energy consumption, thereby playing a certain vertical shock absorption effect and further ensuring the safety of the earthquake-isolated building . The shear force can still be transmitted to the support by the horizontal contact between the detachable button cover 11 and the upper cover plate 21 of the support body 20 , and the tension transmission member 32 . The stress state is shown in Figure 4.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Moreover, the term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed, Or also include elements inherent in such a process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

In the above embodiments, descriptions of directions such as "upper" and "lower" are based on what is shown in the accompanying drawings.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The vertical lift-off controllable seismic isolation support is characterized by comprising a support body (20), wherein the top of the support body (20) is connected with a lift-off buckle cover (11) through a vertical tension control assembly (30), and the vertical tension control assembly (30) is arranged in a force transmission path from the lift-off buckle cover (11) to the support body (20) when the lift-off buckle cover (11) moves upwards; the liftoff flap (11) is configured to be fixedly connected to the bottom of the upper buttress (98).

2. The vertical lift-off adjustable seismic isolation bearing according to claim 1, wherein the vertical tension adjusting component (30) comprises a vertical tension adjusting control member (31) and a tension transmission member (32), the tension transmission member (32) comprises a fixed mounting part, a force transmission part and a compression part which are sequentially and fixedly connected from top to bottom, the fixed mounting part is fixedly connected with the lift-off buckle cover (11), the force transmission part is used for serially connecting the compression part and the fixed mounting part and transmitting tension borne by the lift-off buckle cover (11) to the compression part, the compression part is used for applying pressure to the vertical tension adjusting control member (31) from the lower part of the vertical tension adjusting control member (31), and the top of the vertical tension adjusting control member (31) is abutted to the top of the bearing body (20).

3. The vertically lift-off controllable seismic mount according to claim 2, characterized in that a pressure transmission plate (33) is provided between said compression section and said vertical tension adjustment control (31), said compression section being adapted to apply pressure to said vertical tension adjustment control (31) from below said vertical tension adjustment control (31) by compressing said pressure transmission plate (33).

4. Seismic isolation through hole mount according to claim 2, wherein said vertical tension control member (31) is provided with a through hole running through in the up-down direction, said force transmitting portion passing through said through hole.

5. The vertical lift-off adjustable seismic isolation bearing according to claim 2, wherein the vertical tension adjusting member (31) is made of an energy-consuming material, and the energy-consuming material is one of foamed aluminum, a foamed aluminum-polyurethane composite material and a viscoelastic material.

6. The vertical lift-off adjustable seismic isolation bearing according to claim 2, wherein the fixed mounting part is welded to the lift-off buckle cover (11), and the compression part is a nut which is in threaded connection with an external threaded part of the force transmission part.

7. The vertical lift-off adjustable seismic isolation bearing according to any one of claims 1-6, further comprising a horizontal stop ring plate (13) fixedly connected with the lift-off buckle cover (11), wherein the horizontal stop ring plate (13) is arranged radially outside the top of the bearing body (20).

8. The vertical lift-off adjustable seismic isolation bearing according to claim 7, wherein a low friction plate (14) fixedly connected with the horizontal limit ring plate (13) is arranged between the horizontal limit ring plate (13) and the top of the bearing body (20).

9. The vertical lift-off adjustable seismic isolation mount according to claim 8, wherein the low friction plate (14) is made of polytetrafluoroethylene.

10. The vertical lift-off adjustable seismic isolation bearing according to claim 8 or 9, wherein the height of the low friction plate (14) is equal to the height of the horizontal limit ring plate (13), and the height of the horizontal limit ring plate (13) is greater than or equal to the vertical deformation allowance of the vertical lift-off adjustable seismic isolation bearing.

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