Vibration-vibration double-control support for decoupling horizontal vibration isolation and vertical vibration isolation

Abstract

The utility model discloses a horizontal vibration isolation and vertical vibration isolation decoupling vibration and vibration double-control support which comprises a vertical vibration isolator and a horizontal vibration isolation device, the vertical vibration isolator and the horizontal vibration isolation device are connected in series up and down, and the vertical vibration isolator is located on one side of the horizontal vibration isolation device. Only the vibration isolation spring is arranged between the upper cover plate and the lower cover plate in the vertical vibration isolator, and a horizontal limiting device does not exist between the upper cover plate and the lower cover plate, so that the vertical vibration isolator has a multidirectional movement trend; the horizontal rigidity of the vibration and shock double-control support is smaller than that of a friction pendulum shock insulation support, the vibration and shock double-control support has the function of energy consumption in the horizontal direction, and when the vibration and shock double-control support is applied to a subway upper cover building or corridor shock insulation structure, abrasion of the support under temperature deformation of a building or a corridor can be effectively reduced; when the device is applied to the corridor, vibration of the corridor under wind-induced or human-induced loads can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shock insulation support, specifically relates to a horizontal shock insulation and vertical shock insulation decoupling vibration and shock double control support. BACKGROUND

[0002] In recent years, the city space development mode oriented to rail transit hub, that is, the TOD mode, has gradually become the mainstream development mode of key cities, but the vibration disturbance problem caused by traffic operation is increasingly prominent, a large number of TOD buildings are threatened by traffic vibration and earthquake, and the city development is seriously restricted. The vibration and shock double control support disclosed in CN114197935A and CN114135138A can reduce the vertical earthquake or rail transit vibration response through low vertical stiffness, and at the same time reduce the horizontal earthquake action of the upper structure through horizontal shock insulation, thereby protecting the safety of the upper building.

[0003] The vibration and shock double control support is usually connected in series by a vertical vibration isolation support with small stiffness and a shock insulation support, so that the vertical vibration isolation support and the shock insulation support are integrated, the horizontal performance and the vertical performance are coupled, the vertical vibration isolation and the horizontal shock insulation are simultaneously realized, and the vibration and shock double control support is suitable to be arranged in the building.

[0004] The common vertical vibration isolation support is composed of thick laminated rubber, air spring and steel spring. Among them, the metal spring has low vibration frequency and simple structure, and is mostly applied in actual engineering. At present, the spring in the steel spiral spring unit is mainly vertically and uniformly arranged, and a vertical guide unit is configured to limit the position, or a lateral restraint unit is used to limit the lateral displacement, so as to ensure the reasonable deformation and safety of the spring under rare earthquake. In the actual stress process, due to the existence of horizontal deformation, a certain axial friction is prone to occur, which may reduce the vertical vibration reduction effect. And in the vibration and shock double control support connected with the friction pendulum support, due to the temperature horizontal deformation, the vertical lifting is also caused, so that the vertical force of the support is redistributed to different degrees, and more uncertainty of the vibration reduction effect is increased. The utility model provides a vibration and shock double control support for decoupling horizontal shock insulation and vertical vibration isolation to solve the above problems. INVENTION CONTENTS

[0005] The utility model provides a vibration and shock double control support for decoupling horizontal shock insulation and vertical vibration isolation, which is applied to the subway overbuilding or corridor shock insulation structure, reduces the abrasion of the support under the temperature deformation of the building or corridor, and when applied to the corridor, can also effectively reduce the vibration of the corridor under the wind-induced or human-induced load.

[0006] The utility model adopts the technical scheme for solving the above technical problems:

[0007] A vibration-controlled support with decoupled horizontal and vertical vibration isolation, characterized in that it includes a vertical vibration isolator and a horizontal vibration isolation device, wherein the vertical vibration isolator and the horizontal vibration isolation device are connected in series vertically, and the vertical vibration isolator is located above the horizontal vibration isolation device.

[0008] The vertical vibration isolator includes a cover plate and a vibration isolation spring. The cover plate includes an upper cover plate and a lower cover plate. The vibration isolation spring is disposed between the upper cover plate and the lower cover plate. The horizontal vibration isolation device is connected to the cover plate. The vibration isolation spring includes a vertical spring and an inclined spring. The vertical spring and the inclined spring are spaced apart between the upper cover plate and the lower cover plate and are in a compressed state.

[0009] The horizontal vibration isolation device includes a slide rail and a spherical crown. The slide rail is connected to the cover plate. The slide rail includes an upper slide rail and a lower slide rail. The spherical crown is movably disposed between the upper slide rail and the lower slide rail. The upper slide rail is fixedly connected to the lower cover plate.

[0010] Furthermore, the tilting springs are arranged in groups, and the groups of tilting springs are arranged in a centrally symmetrical manner.

[0011] Furthermore, the upper end of the tilting spring is tilted outward, and the angle between it and the vertical is α, with the tilt angle of α being 0°-90°.

[0012] The ratio of the horizontal stiffness of the vertical vibration isolator to the horizontal stiffness of the horizontal vibration isolation device is 0.5-2, and the specific value of the included angle α is determined accordingly, calculated using the following formula:

[0013] And 90°>α≥0°,

[0014] Among them, f n Target vibration isolation frequency, unit: Hz;

[0015] F: Support design bearing capacity, unit: kN;

[0016] K p : Horizontal stiffness of horizontal seismic isolation device, unit: kN / m;

[0017] α: The angle between the tilt direction of the inclined cylindrical spring and the vertical direction, in °;

[0018] n1: The number of vertically placed cylindrical springs in the vertical vibration isolator, in units of: pieces;

[0019] n2: The number of inclined cylindrical springs in the vertical vibration isolation device, in units of: pieces;

[0020] g: acceleration due to gravity, unit: m / s² 2 .

[0021] Furthermore, the tilting spring is provided with a damper, which is coaxially arranged with the tilting spring.

[0022] Furthermore, the tilting spring is disposed on the side of the cover plate.

[0023] Furthermore, the tilting spring is mounted on the cover plate via a mounting platform, the surface of which is a slope, and the tilting spring is positioned perpendicular to the surface of the mounting platform.

[0024] The beneficial effects of this utility model are as follows:

[0025] In the vertical vibration isolator, only vibration isolation springs are installed between the upper and lower cover plates, and there is no horizontal limiting device between the upper and lower cover plates, which makes the vertical vibration isolator have a multi-directional motion tendency.

[0026] The horizontal stiffness of the vibration-controlled bearing is smaller than that of the friction pendulum seismic isolation bearing, and it has the function of dissipating energy in the horizontal direction. When applied to the seismic isolation structure of subway superstructure or connecting corridor, it can effectively reduce the wear of the bearing under temperature deformation of the building or connecting corridor; and when applied to connecting corridor, it can effectively reduce the vibration of the connecting corridor under wind-induced or human-induced loads.

[0027] The vertical vibration isolator uses a rodless vibration isolation spring to connect the upper and lower cover plates. The centrally symmetrically arranged inclined springs enable the vertical vibration isolator to have both horizontal limiting function and provide a certain horizontal stiffness. Its horizontal stiffness is comparable to that of the friction pendulum vibration isolation support, while its vertical stiffness is much smaller than the latter. Therefore, the two are connected in series to achieve decoupling of horizontal seismic motion and vertical vibration without interference. This decoupling of horizontal and vertical vibration isolation makes the design and analysis of vibration isolation in building structures more convenient. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the split-type overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the lateral pressure vibration state of this utility model;

[0030] Figure 3 This is a schematic diagram of the integrated structure of this utility model;

[0031] Figure 4 This is a constitutive model variation diagram of the vertical load-horizontal displacement hysteresis curve of this utility model.

[0032] Reference numerals: 1. Vertical vibration isolator; 11. Cover plate; 12. Vibration isolation spring; 121. Vertical spring; 122. Inclined spring; 2. Horizontal vibration isolation device. Detailed Implementation

[0033] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] like Figure 1 , 2 As shown in Figure 3, a vibration-controlled support with decoupled horizontal and vertical vibration isolation includes a vertical vibration isolator 1 and a horizontal vibration isolation device 2. The vertical vibration isolator 1 and the horizontal vibration isolation device 2 are connected in series. The vertical vibration isolator 1 is located above or below the horizontal vibration isolation device 2. The vertical vibration isolator 1 includes a cover plate 11 and a vibration isolation spring 12. The cover plate 11 includes an upper cover plate and a lower cover plate. The horizontal vibration isolation device 2 is connected to the upper cover plate or the lower cover plate. The vibration isolation spring 12 is located between the upper cover plate and the lower cover plate. The vibration isolation spring 12 is composed of a vertical spring 121 in a compressed state and an inclined spring 122.

[0036] like Figure 1 , 2As shown in Figure 3, in a specific embodiment of this utility model, the vertical vibration isolator 1 and the horizontal vibration isolation device 2 are arranged in series, with the vertical vibration isolator 1 positioned above the horizontal vibration isolation device 2. The vertical vibration isolator 1 adopts a structure consisting of an upper cover plate, a lower cover plate, a vertical spring 121, and an inclined spring 122. The horizontal vibration isolation device 2 is fixedly connected below the lower cover plate. The vertical vibration isolator 1 has a box-shaped structure. The vibration isolation springs 12 are spaced apart between the upper and lower cover plates. The vertical springs 121 are located in the middle and corners of the cover plate 11. The inclined springs 122 are arranged in groups and located on the side of the cover plate 11. Multiple groups of inclined springs 122 are arranged symmetrically at the center. The upper end of the inclined spring 122 is inclined outward, and the angle between the inclined spring 122 and the vertical direction is α. The upper and lower ends of 122 are respectively connected to the mounting platform on the cover plate 11. The installation and fixation of the tilt spring 122 are achieved by the mounting platform with corresponding slope. At the same time, a damper is set in the tilt spring 122. Through the above settings, the vertical vibration isolator 1 has a horizontal limiting function and provides a certain horizontal stiffness when no horizontal limiting device is set. The horizontal vibration isolation device 2 is a friction pendulum vibration isolation support, including a slide rail and a spherical crown. The slide rail includes an upper slide rail and a lower slide rail. The upper and lower slide rails are spherical surfaces covered with polytetrafluoroethylene plates, modified polytetrafluoroethylene plates or modified ultra-high molecular weight polyethylene plates. The middle is a spherical crown with an ultra-low friction coefficient coating inside. It has an extremely low horizontal friction coefficient, which greatly reduces the energy transmitted by the seismic action and mitigates the seismic response of the superstructure.

[0037] like Figure 1 , 3 As shown, when the vertical vibration isolator 1 and the horizontal vibration isolation device 2 are connected, they can be either box-type integrated structures or independent split structures, depending on the building structure. When an integrated structure is used, the upper slide rail and the lower cover plate of the horizontal vibration isolation device 2 are a whole, forming an integrated structure. When a split structure is used, the upper slide rail and the lower cover plate of the horizontal vibration isolation device 2 are independent structures, which are connected and locked by bolts after being fitted together.

[0038] like Figure 1 , 2As shown in Figure 3, the working principle of this embodiment is as follows: the vertical vibration isolator 1 bears the vertical deformation, and the vertical deformation is borne by the combined action of the vertical spring 121 and the inclined spring 122, thereby reducing the vertical vibration frequency of the structure and realizing vertical vibration isolation; the friction pendulum vibration isolation support is used as the horizontal vibration isolation device 2 to bear the horizontal deformation, reduce the horizontal displacement of the structure, and realize horizontal vibration isolation. The vertical vibration isolator 1 does not have guide rods, and there is no horizontal limiting structure between the upper and lower cover plates. The inclined springs 122 arranged in a central symmetry enable the vertical vibration isolator 1 to have both horizontal limiting function and a certain horizontal stiffness. The horizontal stiffness of the vertical vibration isolator 1 is comparable to that of the horizontal vibration isolation device 2, while the vertical stiffness is much smaller than the latter. Therefore, the two are connected in series to achieve horizontal and vertical vibration isolation without interference, and the horizontal and vertical vibration isolation are basically decoupled. This makes the vibration isolation design and analysis of building structures more convenient and can effectively simplify the complexity of the analysis. At the same time, the vertical vibration isolator 1 has a certain horizontal stiffness. When connected in series with the horizontal vibration isolation device 2, it can reduce the wear of the supports of the building or corridor under temperature deformation and improve the service life of the supports. The inclined springs 122 make the vertical vibration isolator 1 have a multi-directional motion tendency. When the supports are applied to the corridor structure, they can effectively reduce the vibration of the corridor under wind-induced or human-induced loads, ensuring structural safety and stability.

[0039] Figure 4 The diagram shows the variation of the vertical load-horizontal displacement hysteresis curve of the vibratory-controlled bearing, representing the constitutive model variation of the vibratory-controlled bearing compared to a conventional friction pendulum isolation bearing. The vertical isolator 1 possesses a certain horizontal stiffness through the inclined spring 122, but its horizontal stiffness is smaller than that of the vertical isolator with a limit device. The horizontal stiffness of the vertical isolator with the limit device connected in series with the friction pendulum isolation bearing is equal to that of the friction pendulum isolation bearing. However, the horizontal stiffness of the vibratory-controlled bearing, composed of the vertical isolator 1 and the horizontal isolation device 2 connected in series, is smaller than that of the friction pendulum isolation bearing. The smaller the horizontal stiffness, the larger the horizontal slip displacement of the bearing. Under temperature deformation before horizontal seismic action occurs, the vibratory-controlled bearing is less prone to horizontal slippage, thus effectively reducing bearing wear under temperature deformation.

[0040] Figure 4 In the diagram, D represents the horizontal displacement of the support.

[0041] F: Horizontal restoring force of the support;

[0042] d1: Sliding displacement of ordinary friction pendulum isolation bearing;

[0043] d2: Sliding displacement of the steel helical spring friction pendulum vibration dual-control support.

[0044] Furthermore, the upper end of the tilting spring 122 is tilted outward, and the angle between it and the vertical direction is α, with the tilt angle of α being 0°-90°.

[0045] The vertical vibration isolator 1 has a certain horizontal stiffness by setting the tilting spring 122. In actual installation, the horizontal stiffness of the vertical vibration isolator 1 needs to be comparable to the horizontal stiffness of the horizontal vibration isolation device 2, with a ratio range of 0.5-2. The specific value of the included angle α is determined based on the specific ratio. Similarly, the ratio of the horizontal stiffness of the vertical vibration isolator 1 to the horizontal stiffness of the horizontal vibration isolation device 2 can also be controlled based on the specific value of the included angle α. The two values ​​are determined as dependent or independent variables in the formula according to the actual situation.

[0046] The relationship between the included angle α and the ratio of horizontal stiffness is calculated using the following formula:

[0047] And 90°>α≥0°,

[0048] Among them, f n Target vibration isolation frequency, unit: Hz;

[0049] F: Support design bearing capacity, unit: kN;

[0050] K p : Horizontal stiffness of horizontal seismic isolation device, unit: kN / m;

[0051] α: The angle between the tilt direction of the inclined cylindrical spring and the vertical direction, in °;

[0052] n1: The number of vertically placed cylindrical springs in the vertical vibration isolator, in units of: pieces;

[0053] n2: The number of inclined cylindrical springs in the vertical vibration isolator, in units of: pieces;

[0054] g: acceleration due to gravity, unit: m / s² 2 .

[0055] Furthermore, the inclined spring 122 is equipped with a damper, which is coaxially arranged with the inclined spring 122. The inclined spring 122 is sleeved on the outside of the damper. By setting the damper, the vertical load-bearing capacity of the inclined spring 122 is further enhanced, while the horizontal stiffness of the inclined spring 122 is also improved, and the buffering energy dissipation capacity of the inclined spring 122 is increased. When the damper is set, since the damper and the inclined spring 122 are coaxially arranged, the damper and the inclined spring 122 are regarded as a whole, working together to provide vertical load-bearing capacity and horizontal stiffness.

[0056] like Figure 1 , 3As shown, the tilting spring 122 is further mounted on the cover plate 11 via a mounting platform, which enables the tilting spring 122 to be installed at an angle. The surface of the mounting platform is a slope, and the tilting spring 122 is set perpendicular to the surface of the mounting platform.

[0057] Furthermore, the vertical spring 121 and the inclined spring 122 are in a compressed state during use.

[0058] A construction method for a vibration-controlled bearing with decoupled horizontal and vertical seismic isolation includes the following steps:

[0059] S1, Lower support pier construction: Bind the steel cage of the lower support pier, install the lower embedded parts, measure the flatness of the top surface of the support pier, and then pour the lower support pier.

[0060] S2, Support Installation: First, install the vibration-damping dual-control support. After installation, compress the vibration-damping dual-control support using a pre-compression method, and then lock it with bolts. When locking the bolts, the upper and lower ends of the bolts are locked to the cover plate by nuts, and the middle part of the bolt passes through the vertical spring 121 located at the corner to lock the vibration-damping dual-control support, so that the vibration isolation spring 12 in the vibration-damping dual-control support is in a compressed state. Then, the vibration-damping dual-control support in the compressed state is transported to the construction site and installed on the lower support pier.

[0061] S3, Superstructure construction: Install the upper embedded parts, tie the upper support steel cage, and then carry out the superstructure construction.

[0062] S4, Support Release: After the superstructure construction is completed, the vibration-controlled bearing is released. A jack is placed between the vibration-controlled bearing and the lower pier or between the vibration-controlled bearing and the superstructure. The jack is used to further compress the vibration-controlled bearing, so that the bolts locking the vibration-controlled bearing can be released. After driving the jack to further compress the bearing, the locking device is released. Then, the jack is released slowly to release the locked vibration-controlled bearing until it contacts the lower pier and the superstructure, thus completing the release of the locked vibration-controlled bearing. This provides both vertical and horizontal vibration isolation for the building structure or connecting corridor structure. After the locked vibration-controlled bearing is released, the vibration isolation spring 12 remains in a compressed state. The friction pendulum vibration isolation bearing remains under pressure during use and does not lose its vibration isolation function.

[0063] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vibration-controlled bearing with decoupled horizontal and vertical vibration isolation, characterized in that: It includes a vertical vibration isolator (1) and a horizontal vibration isolation device (2), wherein the vertical vibration isolator (1) and the horizontal vibration isolation device (2) are connected in series vertically, and the vertical vibration isolator (1) is located above the horizontal vibration isolation device (2); The vertical vibration isolator (1) includes a cover plate (11) and a vibration isolation spring (12). The cover plate (11) includes an upper cover plate and a lower cover plate. The vibration isolation spring (12) is disposed between the upper cover plate and the lower cover plate. The horizontal vibration isolation device (2) is connected to the cover plate (11). The vibration isolation spring (12) includes a vertical spring (121) and an inclined spring (122). The vertical spring (121) and the inclined spring (122) are disposed at intervals between the upper cover plate and the lower cover plate and are in a compressed state. The horizontal isolation device (2) includes a slide rail and a spherical crown. The slide rail is connected to the cover plate (11). The slide rail includes an upper slide rail and a lower slide rail. The spherical crown is movably disposed between the upper slide rail and the lower slide rail. The upper slide rail is fixedly connected to the lower cover plate.

2. The vibration-controlled support with horizontal and vertical vibration isolation decoupled according to claim 1, characterized in that: The tilting springs (122) are arranged in groups, and the groups of tilting springs (122) are arranged in a centrally symmetrical manner.

3. The vibration-controlled support with horizontal and vertical vibration isolation decoupled according to claim 2, characterized in that: The upper end of the inclined spring (122) is inclined outward, and the angle between it and the vertical is α, and the inclination angle of α is 0°-90°. The ratio of the horizontal stiffness of the vertical vibration isolator (1) to the horizontal stiffness of the horizontal vibration isolation device (2) is 0.5-2, and the specific value of the included angle α is determined accordingly by the following formula: And 90°>α≥0°, Wherein, fn: target vibration isolation frequency, unit: Hz; F: Support design bearing capacity, unit: kN; Kp: Horizontal stiffness of the horizontal isolation device, unit: kN / m; α: The angle between the tilt direction of the inclined cylindrical spring and the vertical direction, in °; n1: The number of vertically placed cylindrical springs in the vertical vibration isolator, in units of: pieces; n2: The number of inclined cylindrical springs in the vertical vibration isolation device, in units of: pieces; g: acceleration due to gravity, unit: m / s² 2 .

4. The vibration-controlled support with horizontal and vertical vibration isolation decoupled according to claim 1, characterized in that: The tilting spring (122) is provided with a damper, which is coaxially arranged with the tilting spring (122).

5. The vibration-controlled dual-control bearing with decoupling of horizontal and vertical vibration isolation as described in claim 1, characterized in that: The tilting spring (122) is disposed on the side of the cover plate (11).

6. The vibration-controlled support with horizontal and vertical vibration isolation decoupled according to claim 1, characterized in that: The tilting spring (122) is mounted on the cover plate (11) via a mounting platform. The surface of the mounting platform is a slope, and the tilting spring (122) is set perpendicular to the surface of the mounting platform.

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