Combined shock insulation support

Abstract

The utility model discloses a combined shock insulation support, which belongs to the technical field of shock insulation of building structures and comprises a shock insulation support body, a U-shaped damper and a connecting piece. The shock insulation support body comprises an upper seat plate, a lower seat plate, an upper spherical crown body and a lower spherical crown body, the upper spherical crown body and the lower spherical crown body are arranged between the upper seat plate and the lower seat plate, and the upper spherical crown body and the lower spherical crown body are hinged and are in contact connection with the upper seat plate and the lower seat plate respectively; a plurality of U-shaped dampers are mounted between the upper seat plate and the lower seat plate through connecting pieces; the U-shaped damper and the connecting piece are connected in a sliding mode in the radial direction of the upper spherical crown body and the lower spherical crown body. Compared with the prior art, the combined type shock insulation support has small initial rigidity and can provide variable damping effects at different stages, so that the combined type shock insulation support can deal with earthquake actions with different strengths more flexibly, safety of buildings is protected more effectively, and loss caused by earthquake disasters is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building structure seismic isolation, and particularly relates to a combined seismic isolation support. BACKGROUND

[0002] In the field of seismic engineering, early design concepts mainly focus on "resisting" seismic energy through the plastic deformation capacity of building structures and the strength of building components. This method shows certain effects under conventional seismic conditions, but when facing rare earthquakes, due to the huge seismic energy, the strength of the structure itself is often difficult to withstand excessive deformation, resulting in structural damage and even overall collapse. Therefore, the traditional seismic design method has obvious limitations in extreme cases.

[0003] To overcome this challenge, seismic isolation technology emerged. Seismic isolation technology achieves effective isolation of seismic energy by setting special seismic isolation supports between the foundation and the superstructure of a building. This technology can significantly prolong the natural period of the structure, making it avoid the predominant period of the earthquake, thereby reducing the transmission of seismic energy to the superstructure and effectively protecting the safety of the building. Among the seismic isolation supports, the friction pendulum seismic isolation support is of great concern due to its unique performance. The friction pendulum seismic isolation support not only effectively prolongs the natural period of the superstructure, but also limits excessive displacement of the isolation layer and has the function of automatic return. These characteristics make the friction pendulum seismic isolation support excellent in reducing the impact of earthquakes on the superstructure.

[0004] In the prior art, for example, a seismic isolation support with a U-shaped damper that can be quickly replaced is disclosed in Chinese Patent No. CN219973567U and applied to a rubber support. However, since the U-shaped metal damper in this support is fixed, it increases the initial stiffness. If it is directly applied to the friction pendulum seismic isolation support, the excessive initial stiffness may limit the flexibility of the seismic isolation support, resulting in the friction pendulum seismic isolation support not being able to effectively function under small earthquake action. Therefore, a new type of combined seismic isolation support with small initial stiffness, multiple stages, and variable damping is needed to make it more effective in protecting the safety of buildings and reducing the loss caused by earthquakes. SUMMARY

[0005] To solve the problems of large initial stiffness, poor recovery ability after earthquakes, and single energy dissipation stage of existing combined seismic isolation supports, the utility model provides a combined seismic isolation support. To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A combined isolation support, comprising an isolation support body, a U-shaped damper and a connecting piece; the isolation support body comprises an upper seat plate, a lower seat plate and an upper spherical crown body and a lower spherical crown body arranged between the upper seat plate and the lower seat plate, the upper spherical crown body and the lower spherical crown body are hinged and are in contact with the upper seat plate and the lower seat plate respectively; a plurality of U-shaped dampers are installed between the upper seat plate and the lower seat plate through the connecting piece; the U-shaped damper and the connecting piece are slidingly connected along the radial direction of the upper spherical crown body and the lower spherical crown body.

[0007] Further, one of the U-shaped damper and the connecting piece is provided with a positioning hole, and the other is provided with an elongated hole extending along the radial direction of the upper spherical crown body and the lower spherical crown body, a first bolt connects the positioning hole and the elongated hole, and the first bolt and the positioning hole can move relatively along the radial direction of the upper spherical crown body and the lower spherical crown body.

[0008] Further, the positioning hole is a rectangular hole, the elongated hole is a rectangular elongated hole, and the first bolt is a square bolt; the square bolt comprises a threaded rod and a rectangular block sleeved outside the threaded rod, the rectangular block is fitted in the rectangular hole and the rectangular elongated hole; the threaded rod is threadedly fitted with a nut at both ends.

[0009] Further, a first gasket is arranged between the nut and the rectangular block.

[0010] Further, the U-shaped damper comprises a reserved hole section, a flat section and a circular arc section, and the reserved hole section is provided with a positioning hole.

[0011] Further, the side wall of the upper seat plate and the lower seat plate is provided with a reserved hole; the connecting piece is provided with a connecting plate, the connecting plate is provided with a connecting hole, and a second bolt connects the reserved hole and the connecting hole.

[0012] Further, the reserved hole is provided with a plurality of reserved holes.

[0013] Further, a second gasket is arranged between the second bolt and the connecting piece.

[0014] Further, the connecting piece and the connecting plate are integrally formed.

[0015] Further, a diagonal brace is arranged between the connecting piece and the connecting plate.

[0016] The beneficial effects of the present application are:

[0017] 1.The utility model provides a combined shock insulation support, which is characterized in that a U-shaped metal damper is attached to the friction pendulum shock insulation support, effectively compensating for the lack of any anti-pulling capacity of the friction pendulum support, and the additional U-shaped metal damper limits the vertical displacement of the friction pendulum support. Under the action of small earthquakes, the sliding connection ensures that the U-shaped metal damper has low lateral stiffness, and can slide smoothly; under the action of medium earthquakes, the square bolts and the edges of the connecting pieces are in full contact, pushing the U-shaped metal damper to work and being in the elastic stage, realizing the variable damping characteristic; under the action of strong earthquakes, the U-shaped metal damper deforms plastically, further varying the damping and limiting the displacement, and the three work together to realize multi-stage shock insulation, different stages have different equivalent damping ratios and stiffnesses, and the shock insulation effect is more obvious.

[0018] 2.The utility model provides a combined shock insulation support, which is characterized in that the post-earthquake repair is faster, a plurality of reserved holes can realize the quick replacement of the U-shaped metal damper, the disassembly and installation can be carried out synchronously, in addition, according to the actual engineering condition, different numbers of U-shaped metal dampers can be used to realize the variable damping characteristic in different stages and to different degrees. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic view of the combined shock insulation support provided by the utility model;

[0020] Figure 2 is the cross-sectional planar view of the combined shock insulation support provided by the utility model;

[0021] Figure 3 is the top view of the combined shock insulation support provided by the utility model;

[0022] Figure 4 is the connection schematic view of the U-shaped damper, the upper seat plate and the connecting piece of the combined shock insulation support provided by the utility model;

[0023] Figure 5 is the structure schematic view of the square bolt of the combined shock insulation support provided by the utility model;

[0024] Figure 6 is the structure schematic view of the connecting piece of the combined shock insulation support provided by the utility model;

[0025] Figure 7 is the structure schematic view of the U-shaped damper of the combined shock insulation support provided by the utility model;

[0026] In the drawings: 1, shock insulation support body; 11, upper seat plate; 12, lower seat plate; 13, upper spherical crown body; 14, lower spherical crown body; 15, reserved hole; 2, U-shaped damper; 21, reserved hole hole section; 22, straight section; 23, circular arc section; 24, positioning hole; 3, connecting piece; 31, long hole; 32, first bolt; 33, nut; 34, connecting hole; 35, second bolt; 36, inclined strut. DETAILED DESCRIPTION

[0027] The utility model is further explained in detail below in combination with the drawings and specific embodiments, but the utility model is not limited to the following examples.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to having a particular orientation, being constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] In the description of the utility model, "first feature" and "second feature" can include one or more features.

[0030] In the description of the utility model, "a plurality of" means two or more.

[0031] In the description of the utility model, "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0032] In the description of the utility model, "above", "over" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature.

[0033] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Embodiment one:

[0035] See the attached Figures 1-7 The present embodiment discloses a combined seismic isolation support, as shown in Figure 1 and Figure 2 , comprising a seismic isolation support body 1, a U-shaped damper 2 and a connecting piece 3. Among them, the seismic isolation support body 1 can be a double-concave friction pendulum seismic isolation support, specifically, the seismic isolation support body 1 comprises an upper seat plate 11, a lower seat plate 12 and an upper spherical crown body 13 and a lower spherical crown body 14 arranged between the upper seat plate 11 and the lower seat plate 12, the upper spherical crown body 13 and the lower spherical crown body 14 are hinged and respectively connected with the upper seat plate 11 and the lower seat plate 12. A plurality of U-shaped dampers 2 are installed between the upper seat plate 11 and the lower seat plate 12 through the connecting piece 3, the U-shaped damper 2 can be a U-shaped metal damper, the U-shaped damper 2 and the connecting piece 3 are slidingly connected along the radial direction of the upper spherical crown body 13 and the lower spherical crown body 14, that is, the U-shaped damper 2 and the connecting piece 3 are fixedly installed, but can slide along the radial direction of the upper spherical crown body 13 and the lower spherical crown body 14.

[0036] In the present embodiment, the U-shaped damper 2 is attached to the friction pendulum seismic isolation support, effectively making up for the shortcoming that the friction pendulum support has no any uplift resistance, the friction pendulum vertical displacement is limited by the additional U-shaped damper 2, and the three work together to realize multi-stage seismic isolation, different stages have different equivalent damping ratios and stiffness, and the seismic energy dissipation effect is more obvious.

[0037] Embodiment two:

[0038] See the attached Figures 1-7 On the basis of embodiment one, in one embodiment of the present application, the specific way of sliding connection between the U-shaped damper 2 and the connecting piece 3 is that, as shown in Figure 4 One of the U-shaped damper 2 and the connecting piece 3 is provided with a positioning hole 24, and the other is provided with an elongated hole 31 extending along the radial direction of the upper spherical crown body 13 and the lower spherical crown body 14, a first bolt 32 connects the positioning hole 24 and the elongated hole 31, and the first bolt 32 and the positioning hole 24 can move relative to each other along the radial direction of the upper spherical crown body 13 and the lower spherical crown body 14.

[0039] In an embodiment of the present application, the positioning hole 24 is a rectangular hole, the long hole 31 is a rectangular long hole 31, and the first bolt 32 is a square bolt. As shown in the structure of the square bolt Figure 5 , the square bolt comprises a threaded rod and a rectangular block sleeved outside the threaded rod, and preferably, the rectangular block is arranged at the middle section of the threaded rod. When the U-shaped damper 2 is connected with the connecting piece 3, the rectangular block is fitted in the rectangular hole and the rectangular long hole 31, and the length of the rectangular block of the square bolt can be the sum of the thickness of the rectangular long hole 31 of the connecting piece 3 and the thickness of the U-shaped damper 2. The square bolt is used to connect the connecting piece 3 with the U-shaped damper 2, and after combination, the square bolt is located in the middle of the rectangular long hole 31, which can facilitate the subsequent sliding. Threaded nuts 33 are respectively threaded at both ends of the threaded rod, and after the threaded rod passes through the rectangular hole and the rectangular long hole 31, the threaded rod is fixed by the threaded nuts 33. A first gasket can also be arranged between the threaded nut 33 and the rectangular block, and the first gasket can be circular and has a diameter greater than the length of the rectangular side of the rectangular long hole 31 perpendicular to the sliding direction.

[0040] In an embodiment of the present application, the U-shaped damper 2 comprises a reserved hole section 21, a flat section 22 and a circular arc section 23, and preferably, the reserved hole section 21 is provided with a positioning hole 24, and the connecting piece 3 is provided with a long hole 31.

[0041] In the initial stage, the sliding connecting piece 3 ensures that the additional lateral stiffness of the U-shaped damper 2 is low, and the U-shaped damper 2 can slide smoothly; in the second stage, the square bolt is in full contact with the edge of the long hole 31 of the connecting piece 3, and the U-shaped damper 2 is pushed to work and is in the elastic stage, thereby realizing the variable damping characteristic; and in the final stage, the U-shaped damper 2 is plastically deformed, and further variable damping is realized while limiting the position.

[0042] Embodiment Three

[0043] See the attached Figures 1-7 , on the basis of embodiment two, in an embodiment of the present application, the side wall of the upper seat plate 11 and the lower seat plate 12 is provided with a reserved hole 15, the connecting piece 3 is provided with a connecting plate, the connecting piece 3 and the connecting plate can be integrally formed, the connecting plate is provided with a connecting hole 34, and the second bolt 35 connects the reserved hole 15 and the connecting hole 34. The number of the reserved holes 15 can be set to be multiple, and the number can be twice the number of the required hole groups of the connecting piece 3. When the connecting piece 3 is fixed with the upper seat plate 11 and the lower seat plate 12, the diameter of the side reserved hole 15 of the upper seat plate 11 and the lower seat plate 12 is consistent with the diameter of the connecting hole 34 of the connecting piece 3.

[0044] In an embodiment of the present application, a second gasket can also be arranged between the second bolt 35 and the connecting piece 3, the diameter of the second gasket is greater than the diameter of the reserved hole 15, and after the second bolt 35 passes through the connecting hole 34 and extends into the reserved hole 15, the two can be fixed by using the threaded nut 33.

[0045] In an embodiment of the present application, an inclined brace 36 is arranged between the connecting piece 3 and the connecting plate, further improving the stability of the connecting piece 3.

[0046] In the present application, the plurality of reserved holes 15 can realize the quick replacement of the U-shaped damper 2, the disassembly and installation can be carried out synchronously, the installation efficiency is improved, and manpower is saved.

[0047] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A combined seismic isolation bearing, characterized by: The isolation bearing body (1) includes an upper seat plate (11), a lower seat plate (12), and an upper spherical crown body (13) and a lower spherical crown body (14) arranged between the upper seat plate (11) and the lower seat plate (12), the upper spherical crown body (13) and the lower spherical crown body (14) are hinged and respectively connected with the upper seat plate (11) and the lower seat plate (12); a plurality of U-shaped dampers (2) are installed between the upper seat plate (11) and the lower seat plate (12) through the connecting piece (3); the U-shaped damper (2) and the connecting piece (3) are slidingly connected along the radial direction of the upper spherical crown body (13) and the lower spherical crown body (14).

2. The combined seismic isolation bearing according to claim 1, wherein: One of the U-shaped damper (2) and the connecting piece (3) is provided with a positioning hole (24), and the other is provided with an elongated hole (31) extending along the radial direction of the upper spherical crown body (13) and the lower spherical crown body (14), a first bolt (32) connects the positioning hole (24) and the elongated hole (31), and the first bolt (32) and the positioning hole (24) can move relative to each other along the radial direction of the upper spherical crown body (13) and the lower spherical crown body (14).

3. The combined seismic isolation bearing according to claim 2, wherein: The positioning hole (24) is a rectangular hole, the elongated hole (31) is a rectangular elongated hole (31), and the first bolt (32) is a square bolt; the square bolt includes a threaded rod and a rectangular block sleeved outside the threaded rod, the rectangular block is fitted in the rectangular hole and the rectangular elongated hole (31); the threaded rod is threadedly fitted with a nut (33) at both ends.

4. The combined seismic isolation bearing according to claim 3, wherein: A first gasket is arranged between the nut (33) and the rectangular block.

5. The combined seismic isolation bearing according to claim 2, wherein: The U-shaped damper (2) includes a reserved hole section (21), a flat section (22), and a circular arc section (23), and the reserved hole section (21) is provided with a positioning hole (24).

6. The combined seismic isolation bearing according to claim 1, wherein: The side walls of the upper seat plate (11) and the lower seat plate (12) are each provided with a reserved hole (15); the connecting piece (3) is provided with a connecting plate, the connecting plate is provided with a connecting hole (34), and a second bolt (35) connects the reserved hole (15) and the connecting hole (34).

7. The combined seismic isolation bearing according to claim 6, wherein: The reserved hole (15) is provided with a plurality of reserved holes.

8. The combined seismic isolation bearing according to claim 6, wherein: A second gasket is arranged between the second bolt (35) and the connecting piece (3).

9. The combined seismic isolation bearing according to claim 6, wherein: The connecting piece (3) and the connecting plate are integrally formed.

10. The combined seismic isolation bearing according to claim 6, wherein: An inclined brace (36) is arranged between the connecting piece (3) and the connecting plate.

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