A seismic isolation bearing capable of withstanding high vertical components of earthquakes

Abstract

The utility model discloses a seismic isolation bearing resistant to high vertical components of earthquakes, comprising a separation mechanism, a bearing flange plate, high-strength limiting bolts and shear pins. The bearing flange plate is arranged on the rubber seismic isolation bearing, and the separation mechanism is arranged on the bearing flange plate. Pin connection holes are evenly distributed in annular shapes on the side end surface of the bearing flange plate, and pin connection through holes are evenly distributed in annular shapes on the limiting ring of the separation mechanism. At the same time, the high-strength limiting bolts connect the seismic isolation bearing plate with the bearing flange plate, thereby ensuring the overall tensile strength of the device within a certain earthquake level range, and cooperating with the rubber seismic isolation bearing to ensure the normal seismic isolation effect of the device under normal earthquakes. When the earthquake intensity exceeds the installation design value, the shear pins will automatically disconnect, and the seismic isolation bearing plate of the separation mechanism will be separated from the bearing flange plate on the rubber bearing. The bearing flange plate is embedded in the limiting ring, so that the device has a certain displacement in the vertical direction, thereby protecting the rubber seismic isolation bearing and improving the service life of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of structural earthquake resistance, in particular to a seismic isolation support capable of withstanding high earthquake vertical components. Background Art

[0002] The traditional seismic isolation bearing is to add a seismic isolation layer between the upper structure and the foundation, install rubber seismic isolation bearings, and play a soft connection with the ground. Through this technology, part of the earthquake energy can be offset; when an earthquake occurs, the building will produce a certain deformation, resulting in the displacement of some positions exceeding the design of the seismic isolation bearing, so that the bearing is stretched excessively and damaged. At present, the problem of insufficient tensile capacity of seismic isolation bearings on the market is mainly solved by setting tensile limit devices. At present, there are two main types of tensile limit devices: type one is to set the tensile limit device and the rubber seismic isolation bearing as one; type two is to set the tensile limit device separately near the seismic isolation bearing to limit the tensile deformation of the seismic isolation bearing under the action of the earthquake. However, the above two types of tensile limit devices are usually used as the second line of defense in seismic design, and adding a tensile limit device alone not only requires changes to the building structure, but also increases the cost investment. Utility Model Content

[0003] The purpose of the utility model is to provide a seismic isolation bearing that can withstand high vertical components of earthquakes, so as to solve the problem that there are two main types of tensile limit devices in the prior art: Type 1 is that the tensile limit device is integrated with the rubber seismic isolation bearing; Type 2 is that the tensile limit device is separately set near the seismic isolation bearing to limit the tensile deformation of the seismic isolation bearing under the action of an earthquake. However, the above two types of tensile limit devices are usually used as the second line of defense in seismic design, and the addition of a tensile limit device alone not only requires changes to the building structure, but also increases the technical problem of cost investment.

[0004] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0005] A seismic isolation bearing capable of withstanding high vertical seismic components, comprising:

[0006] The separation mechanism comprises a seismic isolation support plate, a limiting ring is fixedly connected to one end surface of the seismic isolation support plate, a pin connection through hole is penetrated through the end surface of the limiting ring, the pin connection through holes are evenly distributed in an annular shape on the side wall of the limiting ring, and a threaded hole is opened on the end surface of the seismic isolation support plate on the same side as the limiting ring;

[0007] The support flange plate comprises a flange plate body, a side end surface of the flange plate body is provided with pin connection holes evenly distributed in an annular shape, a second threaded hole is provided through the end surface of the flange plate body, and a rubber seismic isolation support is fixedly connected to one side end surface of the flange plate body;

[0008] A high-strength limit bolt, the high-strength limit bolt passes through the second threaded hole and is threadedly connected with the first threaded hole;

[0009] A shear pin is passed through the pin connection hole and is pin-connected with the pin connection hole.

[0010] As a further solution of the utility model: the pin connection holes correspond to the pin connection through holes one by one, and a shear pin is arranged in each pair of the pin connection holes and the pin connection through holes.

[0011] As a further solution of the utility model: the support flange plate is embedded in the limiting ring.

[0012] As a further solution of the utility model: the limiting ring is a circular ring, and the support flange plate is embedded inside the limiting ring.

[0013] As a further solution of the utility model: the rubber seismic isolation support is arranged on an end surface of the support flange plate on one side away from the separation mechanism.

[0014] As a further solution of the utility model: a seismic isolation support is fixedly connected to the lower end of the rubber seismic isolation support.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model provides a bearing flange plate on the rubber seismic isolation bearing, and a separation mechanism is provided on the bearing flange plate. Pin connection holes are evenly distributed in an annular shape on the side end surface of the bearing flange plate. Pin connection through holes penetrating the side end surface of the limiting ring are evenly distributed in an annular shape on the limiting ring of the separation mechanism. The pin connection holes correspond to the pin connection through holes one by one, and shear pins are provided in each pair of pin connection holes and pin connection through holes. At the same time, the seismic isolation support plate is connected to the bearing flange plate in cooperation with high-strength limiting bolts, so as to ensure the overall tensile strength of the device within a certain earthquake level range, and ensure the normal seismic isolation effect of the device under normal earthquakes in cooperation with the rubber seismic isolation bearing. When the earthquake intensity exceeds the installation design value, the shear pin will automatically disconnect, and the seismic isolation support plate of the separation mechanism will be separated from the bearing flange plate on the rubber bearing. The bearing flange plate is embedded in the limiting ring, so that the device has a certain displacement in the vertical direction, thereby playing a role in protecting the rubber seismic isolation bearing and improving the service life of the bearing.

[0017] 2. Compared with the prior art, the device of the utility model is easy to maintain. After an earthquake, it is only necessary to replace the shear pins to ensure the normal use of the original seismic isolation bearings, which not only reduces the replacement cost, but also greatly reduces the difficulty of replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2This utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 3 It is a schematic cross-sectional view of the structure of the flange plate of the support in the utility model;

[0022] Figure 4 It is a partial structural sectional diagram of the separation mechanism in the utility model.

[0023] In the figure: 1. separation mechanism; 11. seismic isolation support plate; 12. limiting ring; 13. pin connection hole; 14. threaded hole one; 2. shear pin; 3. high-strength limiting bolt; 4. support flange plate; 41. flange plate body; 42. threaded hole two; 43. pin connection hole; 5. seismic isolation support; 6. rubber seismic isolation support. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-Figure 4 As shown, a seismic isolation support resistant to high earthquake vertical components comprises a separation mechanism 1, wherein the separation mechanism 1 comprises a seismic isolation support plate 11, a limiting ring 12 is fixedly connected to one end surface of the seismic isolation support plate 11, a pin-connecting through hole 13 is penetrated through the end surface of the limiting ring 12, the pin-connecting through hole 13 is evenly distributed in an annular shape on the side wall of the limiting ring 12, and a threaded hole 14 is opened on the end surface of the seismic isolation support plate 11 on the same side as the limiting ring 12;

[0026] A seismic isolation bearing capable of withstanding high vertical components of earthquakes also includes a bearing flange plate 4, a high-strength limiting bolt 3 and a shear pin 2, including a flange plate body 41, a side end surface of the flange plate body 41 having pin connection holes 43 evenly distributed in an annular shape, a threaded hole 42 extending through the end surface of the flange plate body 41, a rubber seismic isolation bearing 6 fixedly connected to one side end surface of the flange plate body 41, the high-strength limiting bolt 3 extending through the threaded hole 42 and being threadedly connected to the threaded hole 14, and the shear pin 2 extending through the pin connection hole 13 and being pinned to the pin connection hole 43.

[0027] The pin connection holes 43 correspond to the pin connection through holes 13 one by one, and a shear pin 2 is provided in each pair of pin connection holes 43 and pin connection through holes 13. The support flange plate 4 is embedded in the limiting ring 12, and the limiting ring 12 is a circular ring. The support flange plate 4 is embedded in the inner side of the limiting ring 12. The rubber seismic isolation support 6 is arranged on the end surface of the side of the support flange plate 4 away from the separation mechanism 1, and the lower end of the rubber seismic isolation support 6 is fixedly connected to the seismic isolation support 5.

[0028] In some specific implementation schemes, the seismic isolation bearing 5 is fixedly connected to the ground, and the seismic isolation support plate 11 is fixedly connected to the building that needs seismic isolation. Both the seismic isolation bearing 5 and the seismic isolation support plate 11 are provided with mounting holes, and the seismic isolation bearing 5 and the seismic isolation support plate 11 can be installed and connected to the ground or the building by high-strength limit bolts.

[0029] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0030] A support flange plate 4 is arranged on the rubber seismic isolation support 6, and a separation mechanism 1 is arranged on the support flange plate 4. Pin holes 43 are evenly distributed in an annular shape on the side end surface of the support flange plate 4. A pin through hole 13 penetrating the side end surface of the limiting ring 12 is evenly distributed in an annular shape on the limiting ring 12 of the separation mechanism 1. The pin holes 43 correspond to the pin through holes 13 one by one, and a shear pin 2 is arranged in each pair of the pin holes 43 and the pin through holes 13. At the same time, the seismic isolation support plate 11 is connected to the support flange plate 4 with the high-strength limiting bolt 3. , thereby ensuring the overall tensile strength of the device within a certain earthquake level range, and cooperating with the rubber seismic isolation bearing 6 to ensure the normal seismic isolation effect of the device under normal earthquakes. When the earthquake intensity exceeds the installation design value, the shear pin 2 will automatically disconnect, and the seismic isolation support plate 11 of the separation mechanism 1 is separated from the support flange plate 4 on the rubber support. The support flange plate 4 is embedded in the limiting ring 12, so that the device has a certain displacement in the vertical direction, thereby protecting the rubber seismic isolation bearing 6 and improving the service life of the bearing;

[0031] Compared with the prior art, the present device is easier to maintain. After an earthquake, only the shear pin 2 needs to be replaced to ensure the normal use of the original seismic isolation bearing, which not only reduces the replacement cost but also greatly reduces the difficulty of replacement.

[0032] Several embodiments of the utility model are described in detail above, but the embodiments of the utility model are not limited thereto and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A seismic isolation bearing capable of withstanding high vertical seismic components, characterized in that: include: The separation mechanism (1) comprises a seismic isolation support plate (11), a limiting ring (12) is fixedly connected to one end surface of the seismic isolation support plate (11), a pin connection hole (13) is provided through the end surface of the limiting ring (12), the pin connection hole (13) is evenly distributed in a ring shape on the side wall of the limiting ring (12), and a threaded hole (14) is provided on the end surface of the seismic isolation support plate (11) on the same side as the limiting ring (12); The support flange plate (4) comprises a flange plate body (41), a side end surface of the flange plate body (41) is provided with pin holes (43) evenly distributed in an annular shape, a second threaded hole (42) is provided through the end surface of the flange plate body (41), and a rubber seismic isolation support (6) is fixedly connected to one side end surface of the flange plate body (41); A high-strength limit bolt (3), the high-strength limit bolt (3) passes through the second threaded hole (42) and is threadedly connected to the first threaded hole (14); The shear pin (2) passes through the pin connection hole (13) and is pin-connected with the pin connection hole (43).

2. The seismic isolation bearing capable of withstanding high vertical seismic components according to claim 1, characterized in that: The pin connection holes (43) correspond to the pin connection through holes (13) one by one, and a shear pin (2) is arranged in each pair of the pin connection holes (43) and the pin connection through holes (13).

3. The seismic isolation bearing capable of withstanding high vertical seismic components according to claim 1, characterized in that: The support flange plate (4) is embedded in the limiting ring (12).

4. The seismic isolation bearing capable of withstanding high vertical seismic components according to claim 3, characterized in that: The limiting ring (12) is a circular ring, and the support flange plate (4) is embedded inside the limiting ring (12).

5. The seismic isolation bearing capable of withstanding high vertical seismic components according to claim 1, characterized in that: The rubber seismic isolation support (6) is arranged on an end surface of the support flange plate (4) on one side away from the separation mechanism (1).

6. The seismic isolation bearing capable of withstanding high vertical seismic components according to claim 1, characterized in that: The lower end of the rubber seismic isolation support (6) is fixedly connected to the seismic isolation support (5).

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