Support replacing device with vertical shock insulation function

Abstract

The utility model discloses a support replacing device with a vertical shock insulation function, and relates to the field of shock insulation devices. Comprising a wedge-shaped mechanism arranged in a counter-force support, the wedge-shaped mechanism comprises three wedge-shaped steel plates and a spring, the three wedge-shaped steel plates are matched with one another through slopes, the spring is arranged on the counter-force support, and under the pressure of an upper-end rubber shock insulation support, the three wedge-shaped steel plates displace, the upper steel plate and the lower steel plate displace up and down, and the middle steel plate displaces horizontally. Balancing is carried out by combining the pressure of the spring, so that the shock insulation effect in the vertical direction is achieved, the height of the wedge-shaped mechanism is changed to a certain degree, and the damaged rubber shock insulation support can be replaced through the height difference generated by the change under the condition that an upper structure does not need to be jacked.

Description

Technical Field

[0001] The utility model relates to the field of seismic isolation devices, in particular to a support replacement device with a vertical seismic isolation function. Background Art

[0002] Seismic isolation bearings, especially seismic isolation rubber bearings, are currently widely used in seismic isolation buildings. In the past, due to the large vertical stiffness and negligible vertical compression deformation, seismic isolation bearings of buildings had almost no seismic isolation effect for vertical earthquakes. They were only used for seismic isolation for horizontal earthquakes and lacked seismic isolation function for vertical earthquakes. At the same time, after an earthquake, the bearings may be damaged or lose their function, and the failed bearings need to be replaced. The current main way to replace seismic isolation rubber bearings is to use a jack to apply thrust between the upper pier and the lower pier to lift the upper pier, and when it is lifted to a sufficient height, the seismic isolation rubber bearing is moved horizontally for replacement. However, for general building structures, lifting the upper pier to a certain height will generate a large internal force on the structure, causing cracks in the structure and affecting the safety of the structure. In addition, the adjacent bearings of the structure cannot withstand a large deformation difference during the lifting process, so multiple jacks are needed to lift multiple bearings simultaneously, which is too much work. Utility Model Content

[0003] The utility model aims to solve the technical problems in the prior art that the seismic isolation bearings do not have the vertical seismic isolation function and the replacement workload is large, and provides a bearing replacement device with vertical seismic isolation function. The device itself has vertical elasticity and is installed at the lower part of the rubber bearing. It can produce obvious thickness changes in the vertical force changes, thereby reducing the vertical stiffness of the entire bearing structure, mitigating the effect of vertical seismic force, and playing a vertical seismic isolation role; and can be used for replacing seismic isolation rubber bearings without jacking up the main structure.

[0004] The utility model is realized by the following technical solutions:

[0005] A bearing replacement device with a vertical seismic isolation function comprises a wedge-shaped mechanism installed in a hollow reaction support, the wedge-shaped mechanism comprises three steel plates arranged up and down, wherein the upper surface of the upper steel plate is arranged horizontally, and the lower surface is an inclined surface, and its thickness gradually decreases from left to right; the lower surface of the lower steel plate is arranged horizontally, and the upper surface is an inclined surface, and its thickness gradually decreases from left to right; the upper and lower surfaces of the middle steel plate are both inclined surfaces, and their thickness gradually increases from left to right; the inclinations of the upper and lower surfaces of the middle steel plate are respectively consistent with the inclinations of the inclined surfaces of the upper steel plate and the lower steel plate; a spring is installed on the reaction support; when the upper steel plate is pressurized, the middle steel plate moves horizontally to the right and squeezes the spring; at this time, the upper steel plate and the lower steel plate move in the vertical direction; the inclined surfaces of the upper steel plate and the lower steel plate are always in contact with the upper and lower inclined surfaces of the middle steel plate, and are respectively located on the same plane.

[0006] In a further solution, a plurality of limit bolts are provided on the wedge-shaped mechanism, and the limit bolts connect the three steel plates and limit the displacement of the steel plates, so that the upper steel plate and the lower steel plate can only be relatively displaced in the vertical direction, and the middle steel plate can only be displaced in the horizontal direction.

[0007] In a further solution, the height of the wedge-shaped mechanism in the initial state is reduced when the upper steel plate and the lower steel plate are displaced up and down and the middle steel plate is displaced to compress the spring.

[0008] In a further solution, the reaction force bracket includes a fixed end and a detachable end, the fixed end and the detachable end are connected by a connecting bolt, and the spring is arranged on the detachable end.

[0009] In a further solution, a fixing bolt is provided on the wedge-shaped mechanism, and when the fixing bolt is connected to the middle steel plate, the middle steel plate cannot be displaced in the horizontal direction.

[0010] In a further solution, a damper is provided on the detachable end, and the damper is a liquid viscous damper or a metal damper.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] The device has vertical elasticity by setting three wedge-shaped steel plates and combining the spring balancing force. When installed at the bottom of the rubber seismic isolation support, it can produce obvious thickness changes in the vertical force changes, thereby reducing the vertical stiffness of the entire support structure, slowing down the vertical seismic force, and playing a vertical seismic isolation role.

[0013] When the rubber seismic isolation bearing is damaged due to earthquake or other reasons, the replacement method in the existing technology requires the use of a jack to lift the building structure to a certain extent before replacement. Not only is the process complicated, but the deformation caused by the upward lifting can easily cause damage such as cracks in the main structure. The use of this patent can reduce the gap created by the thickness of the device and replace the rubber bearing without lifting the main building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 The state in the embodiment of the utility model Figure 1 ;

[0017] Figure 3 The state in the embodiment of the utility model Figure 2 ;

[0018] Figure 4 The utility model structure is in the state Figure 2 A top view of the implementation status in FIG.

[0019] Figure numerals: 1-wedge mechanism, 2-reaction support, 3-upper steel plate, 4-lower steel plate, 5-middle steel plate, 6-spring, 7-limiting bolt, 8-fixed end, 9-detachable end, 10-connecting bolt, 11-fixing bolt, 12-damper, 13-rubber seismic isolation bearing, 14-jack, 15-laser rangefinder. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0021] In this embodiment, the utility model is further described by the structure of the device and its application scenarios: the implementation method of the device is to be set between the rubber seismic isolation support 13 and the lower pier, including a wedge-shaped mechanism 1 composed of three steel plates, and a plurality of limit bolts 7. The two rows of limit bolts 7 ensure that the middle steel plate 5 moves in a limited horizontal direction without tilting. At the same time, the limit bolts 7 limit the upper steel plate 3 and the lower steel plate 4 to only undergo relative vertical deformation without horizontal deformation; when the middle steel plate 5 moves horizontally, the thickness of the mechanism will change, such as Figure 2 and 3 shown.

[0022] Conventional rubber seismic isolation bearings 13 can only perform seismic isolation for horizontal earthquakes but not for vertical earthquakes due to their excessive vertical stiffness. The present device itself has vertical elasticity and is installed at the bottom of the rubber seismic isolation bearings 13 to produce significant thickness changes in vertical force changes, thereby reducing the vertical stiffness of the entire bearing structure, mitigating the effects of vertical seismic forces, and achieving vertical seismic isolation. At the same time, the present device can be used to replace the rubber seismic isolation bearings 13 without lifting the main structure. When the rubber seismic isolation bearings 13 are damaged due to earthquakes or other reasons, the previous replacement method requires the use of a jack 14 to lift the building structure to a certain extent before replacement. Not only is the process complicated, but the deformation caused by the upward lifting can also easily lead to cracks and other damage to the main structure. The gap created by the reduced thickness of the present device can be used to replace the rubber bearings without lifting the main building structure.

[0023] In normal use, the middle steel plate 5 is connected to the reaction support 2 through the spring 6. Under the action of the vertical force of the upper structure, the middle steel plate 5 tends to move to the right, compressing the spring 6 and reaching a force balance state. When a vertical earthquake occurs, the vertical force changes, causing the horizontal position of the middle steel plate 5 to change and the pressure on the spring 6 to change. The thickness of the device composed of three steel plates also changes accordingly, so that it acts as a mechanism with a certain vertical elasticity to mitigate vertical earthquakes. A damper 12 (which can be a liquid viscous damper or a metal damper) is provided at the detachable end 9 of the reaction support 2. Its function is to increase the consumption of external input energy during the periodic deformation process under vertical vibration, increase the vertical deformation energy consumption capacity of the device, and reduce the vertical reaction force of the support and the vibration amplitude of the upper structure under the action of vertical shock or vibration, thereby further reducing the structural damage to the upper structure (such as Figure 1-4 As shown), when the fixing bolts 11 are fixed, the horizontal movement of the middle steel plate 5 can be locked. At this time, the whole only exerts the horizontal seismic isolation capacity, and the vertical seismic isolation capacity is not retained; when replacing the rubber seismic isolation support 13, first use the jack 14 to tighten the structure but not lift it, then rotate the connecting bolts 10 to extend the length of the reaction support 2 and relax the pressure of the spring 6, so that the spring 6 and the reaction support 2 are separated, and then the reaction support 2 is removed. At this time, the middle steel plate 5 will slide to the right under the squeeze of the upper steel plate 3 and the lower steel plate 4, so that the thickness of the wedge mechanism 1 of the device is reduced. The gap generated at this time is used to replace the upper rubber seismic isolation bearing 13. This method avoids the need to lift the structure upward when replacing the rubber seismic isolation bearing 13 in the past, reduces the workload of replacing the bearing and avoids the risk of damage to the structure. During the process of replacing the rubber seismic isolation bearing 13, a laser rangefinder 15 can also be used to monitor the displacement of the upper structure. The laser rangefinder 15 is set on one side of the jack 14 and is linked to the jack 14. When the upper structure has a large downward deformation, the jack 14 is automatically started to supplement the pressure to maintain the upper structure in its original position (such as Figure 3 and Figure 4 as shown).

[0024] In this embodiment, the installation method of the rubber isolation support 13 is the same as that of the ordinary isolation rubber support 13, that is, first pour the lower pier concrete, then install the rubber isolation support 13 and the device of the utility model, and then pour the upper pier concrete structure. Figure 2 As shown), the vertical stiffness of the device of the utility model is related to the inclination angle of the three wedge-shaped steel plates and the stiffness of the spring 6, forming a vertical pressure-bearing device with elastic stiffness, while the rubber bearing in the prior art does not have vertical elastic stiffness and therefore does not have vertical seismic isolation capability.

[0025] In the utility model, three wedge-shaped steel plates cooperate with the spring 6, have vertical stiffness and can perform vertical seismic isolation, and are equipped with a damper 12 to further reduce structural damage to vertical vibration and vibration energy consumption; they can also move horizontally to reduce the thickness, and avoid structural jacking work during the process of replacing the support; the utility model uses one device to simultaneously achieve the two functions of vertical seismic isolation and replacement of the support without jacking up the structure.

[0026] The device of the utility model is mostly used for seismic isolation bearings for building structures to resist earthquakes, including seismic isolation bearings for buildings and bridges in the form of reinforced concrete structures, masonry structures, steel structures, wooden structures, etc.; it can also be used for sound insulation and noise reduction rubber bearings for reducing vibrations of office buildings, concert halls, residences, etc. caused by subway vibrations and car vibrations.

[0027] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A bearing replacement device with vertical seismic isolation function, characterized in that: The invention comprises a wedge-shaped mechanism (1) which is installed in a hollow reaction force support (2). The wedge-shaped mechanism (1) comprises three steel plates arranged in an upper and lower position. The upper surface of the upper steel plate (3) is arranged horizontally, and the lower surface is an inclined surface, and the thickness thereof gradually decreases from left to right. The lower surface of the lower steel plate (4) is arranged horizontally, and the upper surface is an inclined surface, and the thickness thereof gradually decreases from left to right. The upper and lower surfaces of the middle steel plate (5) are both inclined surfaces, and the thickness thereof gradually increases from left to right. The inclinations of the upper and lower surfaces of the middle steel plate (5) are respectively the same as those of the inclined surface of the upper steel plate (3), the inclined surface of the lower steel plate (4), and the inclined surface of the middle steel plate (5). The inclination of the inclined surface of the lower steel plate (4) is consistent, and a spring (6) is installed on the reaction support (2). When the upper steel plate (3) is compressed, the middle steel plate (5) moves horizontally to the right and squeezes the spring (6). At this time, the upper steel plate (3) and the lower steel plate (4) move in the vertical direction. The inclined surface of the upper steel plate (3) and the corresponding inclined surface of the middle steel plate (5) are always in contact and located on the same plane, and the inclined surface of the lower steel plate (4) and the corresponding inclined surface of the middle steel plate (5) are always in contact and located on the same plane.

2. A bearing replacement device with vertical seismic isolation function according to claim 1, characterized in that: The wedge-shaped mechanism (1) is provided with a plurality of limiting bolts (7), which connect the three steel plates and limit the displacement of the steel plates, so that the upper steel plate (3) and the lower steel plate (4) can only be relatively displaced in the vertical direction, and the middle steel plate (5) can only be displaced in the horizontal direction.

3. A bearing replacement device with vertical seismic isolation function according to claim 1 or 2, characterized in that: The height of the wedge-shaped mechanism (1) in the initial state decreases when the upper steel plate (3) and the lower steel plate (4) move up and down, and the middle steel plate (5) moves horizontally to squeeze the spring (6).

4. The support replacement device with vertical seismic isolation function according to claim 1 is characterized in that: The reaction force bracket (2) comprises a fixed end (8) and a detachable end (9), wherein the fixed end (8) and the detachable end (9) are connected via a connecting bolt (10), and the spring (6) is arranged on the detachable end (9).

5. The support replacement device with vertical seismic isolation function according to claim 1 is characterized in that: The wedge-shaped mechanism (1) is provided with a fixing bolt (11), and when the fixing bolt (11) is connected to the middle steel plate (5), the middle steel plate (5) cannot be displaced in the horizontal direction.

6. The support replacement device with vertical seismic isolation function according to claim 4 is characterized in that: The detachable end (9) is provided with a damper (12), and the damper (12) is a liquid viscous damper or a metal damper.

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