Horizontal displacement restraint device for spring isolator

Abstract

The application discloses a horizontal displacement constraint device of a spring vibration isolation support, which comprises a central pipe column arranged between an upper structure and a lower structure and a plurality of horizontal constraint components uniformly arranged around the central pipe column, the central pipe column is fixedly connected with the upper structure, each horizontal constraint component comprises: an upper ear plate vertically arranged and fixed on the side of the central pipe column; a lower ear plate fixedly connected with the lower structure; and a horizontally arranged chain rod component, one end of which is hingedly connected with the lower end of the upper ear plate through a first pin shaft component and a knuckle bearing, and the other end of which is hingedly connected with the lower ear plate through a second pin shaft component. The application effectively solves the problem of weak horizontal stiffness in the existing spring vibration isolation structure.

Description

Technical Field

[0001] This invention relates to vibration isolation technology in building engineering, and more specifically to a horizontal displacement constraint device for a spring vibration isolation support. Background Technology

[0002] In recent years, more and more cities have begun constructing rail transit systems such as subways and urban rail transit. While rail transit has facilitated people's travel, the environmental vibrations and secondary noise pollution generated during operation cannot be ignored. When trains pass by, ground-level and above-ground buildings can strongly detect vibration signals, seriously affecting the normal use of buildings.

[0003] Vibration isolation technology can effectively curb environmental vibration and secondary pollution generated by the normal operation of rail transit. Currently, the most effective measures for isolating rail transit vibration are divided into two types: one is to isolate the source of rail transit vibration, namely the steel spring floating slab vibration isolation system; the other is to adopt overall vibration isolation technology for the superstructure of rail transit.

[0004] Conventional spring vibration isolation technology involves cutting off vertical structural members of a building and installing spring vibration isolators between them. For example... Figure 1 and Figure 2 As shown, the vertical superstructure includes upper structural columns 1, upper floor slabs 2, upper supports 3, and upper beams 4. The vertical substructure includes lower supports 6, lower floor slabs 7, lower beams 8, and lower structural columns 9. Multiple sets of spring isolators 5 are installed between the upper supports 3 and the lower supports 6 to cut off the vibration propagation path. By adjusting the vertical stiffness of the spring isolators 5, the excitation frequency Ω is made to move away from the natural frequency ω of the vertical superstructure system, i.e., with the tuning ratio η... The greater the increase in the transmission ratio, the higher the vibration isolation efficiency. The vertical stiffness of the spring isolator 5 is adjustable, but due to the inherent characteristics of springs, its horizontal stiffness is relatively weak, typically only 0.3 times the vertical stiffness. When the spring isolator 5 is used in buildings in high-intensity earthquake zones or under significant horizontal loads such as high wind pressure, the horizontal stiffness of traditional spring isolators alone is insufficient to constrain the horizontal displacement of the superstructure under horizontal loads. Summary of the Invention

[0005] The purpose of this invention is to provide a horizontal displacement constraint device for a spring vibration isolation support, which can better constrain the horizontal displacement of the structure while ensuring the vibration reduction requirements of the structure.

[0006] The objective of this invention can be achieved through the following technical solutions.

[0007] A horizontal displacement restraint device for a spring vibration isolation bearing includes a central tube column disposed between an upper structure and a lower structure, and a plurality of horizontal restraint components uniformly arranged around the central tube column. The central tube column is fixedly connected to the upper structure, and each horizontal restraint component includes:

[0008] The upper ear plate is vertically installed and fixed to the side of the central tube column;

[0009] The lower ear plate is fixedly connected to the lower structure;

[0010] The horizontally arranged chain rod assembly is hinged at one end to the lower end of the upper ear plate via a first pin assembly and a spherical bearing, and at the other end to the lower ear plate via a second pin assembly.

[0011] Several vibration isolation spring groups are also provided between the upper structure and the lower structure. The vibration isolation spring groups are evenly distributed around the central column and located between adjacent horizontal constraint components.

[0012] In this invention, the central column and upper ear plate can be pre-welded together to form the main force-transmitting component of the superstructure. The lower ear plate serves as the main force-transmitting component of the substructure. The upper and lower ear plates are connected by a horizontal constraint assembly, allowing the horizontal load transmitted to the superstructure to be transferred to the substructure via the horizontal constraint assembly, thereby constraining the horizontal displacement of the building and effectively solving the problem of weak horizontal stiffness in existing spring vibration isolation structures. Furthermore, at the hinge point between the upper ear plate near the central column and the chain rod assembly, a spherical bearing is used to coordinate the overall torsion and small deformations of the structure. That is, when the entire structure is in operation, if the superstructure undergoes torsion and small deformations under external loads, the upper ear plate, spherical bearing, and chain rod assembly move together. The entire node becomes a hinged node with the spherical bearing as the rotation core, preventing small deformations that may occur under various load conditions from affecting the structural performance and ensuring the normal operation of the entire structural system under various conditions.

[0013] The present invention also has the following preferred designs:

[0014] The chain rod assembly of the present invention includes two symmetrical chain plates, such that the lower end of the upper ear plate and the upper end of the lower ear plate are located between the two chain plates, thereby ensuring the stability of the horizontal constraint assembly.

[0015] The central column and the upper end of the upper ear plate of the present invention are anchored into the interior of the upper structure.

[0016] The central column of the present invention is connected to the lower structure by multiple pull-out anchors. When subjected to a large pull-out force, the pull-out force is provided by the pull-out anchors to limit the vertical pull-out displacement. The lower end of the pull-out anchor is anchored into the interior of the lower structure, and the upper end of the pull-out anchor is fixedly connected to the central column.

[0017] The pull-out anchors of the present invention are evenly distributed around the central pipe column.

[0018] The lower end of the lower ear plate of the present invention is fixedly connected to a pre-embedded steel plate, and the lower surface of the pre-embedded steel plate has anchor bars and structural steel that are anchored into the lower structure.

[0019] The central column of the present invention is a steel fiber reinforced concrete steel pipe column.

[0020] The present invention has the following beneficial effects:

[0021] 1. The central column and upper ear plate of the present invention constitute the main force transmission components of the upper structure, and the lower ear plate serves as the main force transmission component of the lower structure. The upper ear plate and the lower ear plate are connected together by a horizontal constraint assembly, so that the horizontal load transmitted to the upper structure of the building can be transmitted to the lower structure through the horizontal constraint assembly, thereby constraining the horizontal displacement of the building and effectively solving the problem of weak horizontal stiffness in the existing spring vibration isolation structure.

[0022] 2. The combination of the horizontal constraint component and the spring vibration isolation assembly of the present invention can ensure both the vibration reduction effect of the structure and the normal use requirements of the structure.

[0023] 3. In this invention, a spherical bearing is used at the hinge point between the upper ear plate and the chain rod assembly near the central column to coordinate the overall torsion and small deformation of the structure, thereby enhancing the overall coordinated operation capability of the device. That is, when the whole system is working, when the upper structure undergoes torsion and small deformation under external load, the upper ear plate, the spherical bearing, and the chain rod assembly move together. The entire node becomes a hinge node with the spherical bearing as the rotation core, preventing small deformations that may occur under various load conditions from affecting the structural working efficiency and ensuring that the entire structural system can operate normally under various working conditions. Attached Figure Description

[0024] Figure 1 This is a sectional elevation view of the vertical structure of a building that employs conventional vibration isolation technology;

[0025] Figure 2 yes Figure 1 A-A sectional view;

[0026] Figure 3 This is an elevation sectional view of a horizontal displacement constraint device for a spring vibration isolation support according to the present invention.

[0027] Figure 4 yes Figure 3 B-B cross-sectional view;

[0028] Figure 5 This is an exploded perspective view of a horizontal displacement constraint device for a spring vibration isolation support according to the present invention, excluding the vibration isolation spring assembly.

[0029] Figure 6 This is an exploded view of the horizontal constraint component of the present invention;

[0030] Figure 7 This is a three-dimensional assembly drawing of a horizontal displacement constraint device for a spring vibration isolation support according to the present invention. The drawing does not include the vibration isolation spring assembly.

[0031] Explanation of reference numerals in the attached drawings: 1-Upper structural column, 2-Upper floor slab, 3-Upper support, 4-Upper beam, 5-Spring vibration isolator, 6-Lower support, 7-Lower floor slab, 8-Lower beam, 9-Lower structural column, 10-Central pipe column, 11-Upper ear plate, 12-First pin assembly, 13-Joint bearing, 14-Chain plate, 15-Second pin assembly, 16-Lower ear plate, 17-Embedded steel plate, 18-Anchor bar, 19-Steel section, 20-Pull-out anchor rod, 21-Vibration isolation spring assembly, 22-Nut, 23-First washer, 24-Second washer, 25-Pin sealing plate. Detailed Implementation

[0032] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, so that those skilled in the art can better understand and implement the technical solutions of the present invention.

[0033] like Figures 3 to 7 The diagram illustrates a horizontal displacement constraint device for a spring vibration isolation bearing. It includes a central tube column 10 positioned between the upper and lower structures, and four horizontal constraint components evenly distributed around the central tube column 10. The central tube column 10 is fixedly connected to the upper structure. In the diagram, the upper support 3 represents the upper structure, and the lower support 6 represents the lower structure.

[0034] Each horizontal constraint component includes:

[0035] The upper ear plate 11 is vertically set and fixed to the side of the central tube column 10;

[0036] The lower ear plate 16 is fixedly connected to the lower support 6;

[0037] The horizontally arranged chain rod assembly has one end hinged to the lower end of the upper ear plate 11 via a first pin assembly 12 and a joint bearing 13, and the other end hinged to the lower ear plate 16 via a second pin assembly 15. In this embodiment, the chain rod assembly includes two symmetrical chain plates 14, such that the lower end of the upper ear plate 11 and the upper end of the lower ear plate 16 are located between the two chain plates 14.

[0038] Four vibration isolation spring groups 21 are also provided between the upper support 3 and the lower support 6. The vibration isolation spring groups 21 are evenly distributed around the central tube column 10 and located between adjacent horizontal constraint components. In this embodiment, the horizontal cross-sections of the upper support 3 and the lower support 6 are rectangular, so four horizontal constraint components are arranged around the central tube column 10 in the transverse and longitudinal directions. In other embodiments, a number of horizontal constraint components can be set around the central tube column 10 according to the structural characteristics of the upper and lower structures.

[0039] The central column 10 and the upper ear plate 11 can be pre-welded together to form the main force transmission component of the upper structure, i.e., the upper support 3. The lower ear plate 16 serves as the main force transmission component of the lower structure, i.e., the lower support 6. The upper ear plate 11 and the lower ear plate 16 are connected together through a horizontal constraint assembly, so that the horizontal load transmitted to the upper structure of the building can be transmitted to the lower structure through the horizontal constraint assembly, thereby constraining the horizontal displacement of the building and effectively solving the problem of weak horizontal stiffness in the existing spring vibration isolation structure.

[0040] As a preferred embodiment:

[0041] The upper ends of the central column 10 and the upper ear plate 11 are anchored into the upper support 3.

[0042] The central column 10 is connected to the lower support 6 by multiple pull-out anchors 20. When subjected to a large pull-out force, the pull-out force is provided by the pull-out anchors 20 to limit the vertical pull-out displacement. The lower end of the pull-out anchor 20 is anchored into the lower support 6, and the upper end of the pull-out anchor 20 is fixedly connected to the central column 10. Specifically, the pull-out anchors 20 are evenly distributed around the central column 10. A steel structure for fixed connection with the pull-out anchors 20 is set on the outside of the central column 10. The upper end of the pull-out anchor 20 is threaded and fixed by nuts 22.

[0043] In this embodiment, the lower end of the lower ear plate 16 is fixedly connected to a pre-embedded steel plate 17, and the lower surface of the pre-embedded steel plate 17 has anchor bars 18 and structural steel 19 anchored into the lower support 6.

[0044] In this embodiment, the central column 10 is a steel fiber reinforced concrete steel pipe column. A first shim 23 is provided on the contact interface between the upper ear plate 11 and the chain plate 14 of the horizontal constraint assembly, and a second shim 24 is provided on the contact interface between the lower ear plate 16 and the chain plate 14. Both the first pin assembly 12 and the second pin assembly 15 have their own pin sealing plates 25. The vibration isolation spring assembly 21 can be a spring isolator from the prior art. The spherical plain bearing 13 is an existing product; it can be a spherical plain bearing of model GE-ES-15~300 from Fujian Longxi Bearing (Group) Co., Ltd., or a spherical plain bearing of model GEG-ES-4~280 from Zhejiang Jingjiu Bearing Industry Co., Ltd. The spherical plain bearing 13 needs to be set with an adjustable angle according to the calculated envelope under various working conditions to prevent small deformations that may occur in the system under various load conditions, which could affect working efficiency.

[0045] In this invention, at the hinge point between the upper ear plate 11 and the chain rod assembly near the central column 10, a spherical bearing 13 is used to coordinate the overall torsion and minor deformation of the structure. That is, when the whole structure is working, when the upper structure undergoes torsion and minor deformation under external load, the upper ear plate 11, the spherical bearing 13, and the chain rod assembly move together. The entire node becomes a hinge node with the spherical bearing 13 as the rotation core, preventing minor deformations that may occur under various load conditions from affecting the structural performance and ensuring that the entire structural system can operate normally under various conditions.

[0046] The above embodiments are merely preferred embodiments of the present invention, but should not be construed as limiting the invention. Any modifications and improvements made based on the concept of the present invention should fall within the protection scope of the present invention, and the specific protection scope is subject to the claims.

Claims

1. A horizontal displacement constraint device for a spring vibration isolation support, characterized in that: The system includes a central column positioned between the upper and lower structures, and a plurality of horizontal constraint components evenly distributed around the central column. The central column is fixedly connected to the upper structure, and each horizontal constraint component includes: The upper ear plate is vertically installed and fixed to the side of the central tube column; The lower ear plate is fixedly connected to the lower structure; The horizontally arranged chain rod assembly is hinged at one end to the lower end of the upper ear plate via a first pin assembly and a spherical bearing, and at the other end to the lower ear plate via a second pin assembly. Several vibration isolation spring groups are also provided between the upper structure and the lower structure. The vibration isolation spring groups are evenly distributed around the central column and located between adjacent horizontal constraint components.

2. The horizontal displacement constraint device for the spring vibration isolation support according to claim 1, characterized in that: The chain link assembly includes two symmetrical chain plates.

3. The horizontal displacement constraint device for the spring vibration isolation support according to claim 2, characterized in that: The central column and the upper end of the upper ear plate are anchored into the interior of the upper structure.

4. The horizontal displacement constraint device for the spring vibration isolation support according to claim 3, characterized in that: The central column is connected to the lower structure by multiple pull-out anchors. The lower end of the pull-out anchor is anchored into the interior of the lower structure, and the upper end of the pull-out anchor is fixedly connected to the central column.

5. The horizontal displacement constraint device for the spring vibration isolation support according to claim 4, characterized in that: The pull-out anchors are evenly distributed around the central pipe column.

6. The horizontal displacement constraint device for the spring vibration isolation support according to claim 5, characterized in that: The lower end of the lower ear plate is fixedly connected to a pre-embedded steel plate, and the lower surface of the pre-embedded steel plate has anchor bars and structural steel that are anchored into the lower structure.

7. The horizontal displacement restraint device for the spring vibration isolation support according to any one of claims 1 to 6, characterized in that: The central tubular column is a steel fiber reinforced concrete steel tubular column.

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