Combined shock insulation support

Abstract

The utility model discloses a combined shock insulation support which is characterized in that an interlayer rubber structure and upper U-shaped steel are arranged at the upper part of the shock insulation support and are used for bearing a horizontal earthquake effect; thicker lower U-shaped steel is arranged on the lower portion of the shock insulation support and used for bearing the vertical earthquake effect, the interlayer rubber structure can bear the vertical bearing capacity of the structure and consumes and dissipates energy input by horizontal earthquake waves, the upper U-shaped steel has the functions of shock insulation, resetting and tension resistance, and the lower U-shaped steel consumes the energy input by the vertical earthquake waves through deformation of the lower U-shaped steel. According to the combined type shock insulation support, shock insulation is carried out in the mode that the interlayer rubber structure and the U-shaped steel are combined, and the defects that a traditional shock insulation support cannot carry out vertical shock insulation and cannot bear pulling force are effectively overcome under the condition that the requirement for horizontal shock insulation is met; bearing, energy consumption, shock isolation and resetting are integrated, and earthquake effects in different directions can be isolated.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a combined seismic isolation support. Background Art

[0002] Existing building structure seismic isolation technologies include sandwich rubber seismic isolation devices, friction sliding seismic isolation devices, rolling seismic isolation devices, supported swing seismic isolation devices, and hybrid seismic isolation devices. They are required to have certain supporting and energy dissipation capabilities to reduce the damage to the upper structure caused by the earthquake during an earthquake and ensure that the structural deformation does not exceed the limit specified in the code. They must also have certain durability and reset capabilities to ensure that the seismic isolation device can continue to be used to cope with the next earthquake after the earthquake. For example, a sandwich rubber pad seismic isolation device is made of rubber sheets and sandwich steel plates that are layered and vulcanized at high temperature. It has excellent load-bearing capacity and energy dissipation capacity. However, when an earthquake occurs, the building may experience a large swing amplitude, causing the seismic isolation support to be subjected to a certain amount of tension, while the tensile performance of the sandwich rubber seismic isolation device is slightly weaker. For another example, the friction sliding seismic isolation device is low-cost and easy to construct, but its seismic isolation performance is not as good as that of the sandwich rubber seismic isolation device.

[0003] In addition, a large number of earthquake damage phenomena and earthquake records show that in high-intensity areas, the impact of vertical earthquakes on buildings is very significant, and during earthquakes, horizontal seismic motions and vertical seismic motions are coupled with each other, and vertical seismic motions will also aggravate horizontal seismic responses to a certain extent; however, the current seismic isolation bearings can significantly reduce horizontal seismic effects, but the reduction of vertical seismic effects is relatively limited. Utility Model Content

[0004] In order to overcome the defects of the existing seismic isolation bearings in isolating vertical earthquakes, the utility model provides a combined seismic isolation bearing, which includes: an upper connecting plate, a middle partition plate and a lower connecting plate;

[0005] The upper connecting plate is arranged on the lower connecting plate, and the middle partition plate is arranged between the upper connecting plate and the lower connecting plate;

[0006] A sandwich rubber structure and a plurality of upper U-shaped steels are provided between the upper connecting plate and the middle partition plate; the top and bottom ends of the sandwich rubber structure are connected to the middle of the upper connecting plate and the middle partition plate, respectively; the plurality of upper U-shaped steels are arranged along the four sides of the sandwich rubber structure, and the open ends of the plurality of upper U-shaped steels are all arranged toward the sandwich rubber structure, and the closed ends of the plurality of upper U-shaped steels are all arranged to protrude from the outer sides of the upper connecting plate and the middle partition plate;

[0007] A plurality of lower U-shaped steels are fixedly arranged between the middle partition plate and the lower connecting plate, and the cross-section of one side of the opening of the plurality of lower U-shaped steels is trapezoidal, and the closed ends of the plurality of lower U-shaped steels protrude from the outer sides of the lower connecting plate and the middle partition plate.

[0008] In some embodiments, part of the upper U-shaped steel is a single U-shaped steel, and part of the upper U-shaped steel is a double U-shaped steel, and the single U-shaped steel and the double U-shaped steel are arranged at intervals.

[0009] In some embodiments, the double U-shaped steel includes an upper support connecting block, a lower support connecting block and two U-shaped steel units connected side by side and spaced apart between the upper support connecting block and the lower support connecting block, the upper support connecting block is fixed on the lower surface of the upper connecting plate, the lower support connecting block is connected to the lower surface of the middle partition plate, and the two ends of each of the U-shaped steel units are respectively connected to the outer walls of the upper support connecting block and the lower support connecting block.

[0010] The thickness of the upper supporting connection block and the lower supporting connection block are both greater than the wall thickness of the U-shaped steel unit, and the width of the upper supporting connection block and the lower supporting connection block are both greater than the sum of the widths of the two U-shaped steel units.

[0011] In some embodiments, the double U-shaped steel is an integrated structure.

[0012] In some embodiments, the upper U-shaped steel is connected to the upper connecting plate via upper connecting bolts, and the upper and lower surfaces of the upper U-shaped steel are welded to the upper connecting plate and the middle partition plate, respectively.

[0013] In some embodiments, the lower U-shaped steel is connected to the lower connecting plate via lower connecting bolts, and the upper and lower surfaces of the lower U-shaped steel are welded to the middle partition plate and the lower connecting plate, respectively.

[0014] In some embodiments, the sandwich rubber structure is formed by laying steel plates and rubber layers on top of each other, and a rubber layer is provided between any two of the steel plates.

[0015] In some embodiments, the combined seismic isolation bearing includes eight upper U-shaped steels and four lower U-shaped steels, and the thickness of the lower U-shaped steels is greater than that of the upper U-shaped steels.

[0016] In some embodiments, the open side of the lower U-shaped steel is an isosceles trapezoidal structure, and the width of the closed side of the lower U-shaped steel is greater than the width of the open side of the lower U-shaped steel.

[0017] In some embodiments, bolt holes are provided on both the upper connecting plate and the lower connecting plate.

[0018] Compared with the prior art, the present invention has at least one of the following advantages or beneficial effects:

[0019] The utility model discloses a combined seismic isolation support capable of withstanding vertical earthquakes. The upper portion of the seismic isolation support is provided with a sandwich rubber structure and an upper U-shaped steel to withstand horizontal earthquakes. The lower portion of the seismic isolation support is provided with a thicker lower U-shaped steel to withstand vertical earthquakes. The sandwich rubber structure can both withstand the vertical bearing capacity of the structure and dissipate the energy input by horizontal earthquake waves. The upper U-shaped steel has the functions of isolation, reset and tensile resistance. The lower U-shaped steel consumes the energy input by vertical earthquake waves through its own deformation. The combined seismic isolation support adopts a sandwich rubber structure combined with U-shaped steel for seismic isolation. While meeting the requirements of horizontal seismic isolation, it effectively eliminates the defects of traditional seismic isolation supports that cannot perform vertical seismic isolation and cannot withstand tensile forces. It integrates bearing, energy-dissipating isolation and reset, and can isolate seismic effects in different directions, thereby extending the natural vibration period of the upper structure, avoiding the site's superior period, reducing the damage to the upper structure caused by earthquakes, and thus ensuring the safety of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its features, configurations, and advantages will become more apparent upon reading the detailed description of the non-limiting embodiments described below with reference to the accompanying drawings. Like reference numerals indicate like parts throughout the drawings. The drawings are not necessarily drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0021] Figure 1 This is a structural diagram of a combined seismic isolation support in an embodiment of the present utility model;

[0022] Figure 2 This is a layout diagram of the upper part of the seismic isolation support in the embodiment of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the double U-shaped steel in the embodiment of the present utility model;

[0024] Figure 4 This is a layout diagram of the lower part of the seismic isolation support in the embodiment of the present utility model;

[0025] In the figure, 1. upper connecting plate, 2. lower connecting plate, 3. middle partition plate, 4. upper connecting bolts, 5. single U-shaped steel, 6. double U-shaped steel, 61. upper supporting connecting block; 62. lower supporting connecting block, 63. U-shaped steel unit, 7. rubber layer, 8. steel plate, 9. lower connecting bolts, 10. lower U-shaped steel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 4 The utility model provides a combined seismic isolation support, which includes: an upper connecting plate 1, a middle partition plate 3 and a lower connecting plate 2 (the upper and lower connecting plates 2 are connected to the column bottom and the foundation respectively); the upper connecting plate 1 is arranged on the lower connecting plate 2, and the middle partition plate 3 is arranged between the upper connecting plate 1 and the lower connecting plate 2; a sandwich rubber structure and a plurality of upper U-shaped steels are arranged between the upper connecting plate 1 and the middle partition plate 3; the top and bottom ends of the sandwich rubber structure are respectively connected to the middle of the upper connecting plate 1 and the middle partition plate 3, and the plurality of upper U-shaped steels are connected along the sandwich rubber structure The structure is arranged around the upper U-shaped steel, and the open ends of the multiple upper U-shaped steels are all arranged toward the sandwich rubber structure, and the closed ends of the multiple upper U-shaped steels are all arranged to protrude from the outer sides of the upper connecting plate 1 and the middle partition plate 3; multiple lower U-shaped steels 10 are fixedly arranged between the middle partition plate 3 and the lower connecting plate 2, and the cross-section of one side of the opening of the multiple lower U-shaped steels 10 is trapezoidal, and the closed ends of the multiple lower U-shaped steels 10 are all arranged to protrude from the outer sides of the lower connecting plate 2 and the middle partition plate 3; wherein, the thickness of the upper U-shaped steel is relatively small (therefore, it can also be called upper U-shaped soft steel), and the thickness of the lower U-shaped steel 10 is relatively large. The utility model provides a combined seismic isolation bearing with the upper part bearing horizontal earthquake action and the lower part bearing vertical earthquake action. The upper part of the seismic isolation bearing is combined with a sandwich rubber structure and an upper U-shaped steel, and the lower part adopts a thicker lower U-shaped steel 10. The upper part mainly dissipates the energy input by horizontal seismic action by the deformation of the sandwich rubber structure, and supplemented by the deformation of the single U-shaped steel 5 and the double U-shaped steel 6 to dissipate the energy input by horizontal seismic action. The lower part dissipates the energy input by vertical seismic action by using thick U-shaped steel.

[0028] In an embodiment of the present invention, the above-mentioned sandwich rubber structure is composed of steel plates 8 (the steel plates 8 are thin steel plates) and rubber layers 7 laid up and down. A rubber layer 7 is provided between any two steel plates 8, and the rubber layer 7 and the steel plates 8 are bonded and fixed together.

[0029] When an earthquake occurs, the rubber pad 7 and the steel plate 8 in the above-mentioned sandwich rubber structure will be displaced to dissipate the energy input by the earthquake. The upper U-shaped steel has the functions of seismic isolation, reset and tensile resistance, and the lower U-shaped steel consumes the energy input by the vertical seismic wave through its own deformation. The combined seismic isolation bearing adopts a combination of sandwich rubber structure and U-shaped steel for seismic isolation to isolate the earthquake motion below the seismic isolation bearing, thereby extending the natural vibration period of the upper structure, avoiding the superior period of the site, and thus ensuring the safety of the building.

[0030] In an embodiment of the present utility model, among the above-mentioned multiple upper U-shaped steels, some of the upper U-shaped steels are single U-shaped steels 5, and some of the upper U-shaped steels are double U-shaped steels 6, and the single U-shaped steels 5 and the double U-shaped steels 6 are arranged at intervals; specifically, the combined seismic isolation bearing is provided with 8 upper U-shaped steels; four of them are single U-shaped steels 5, and the other four are double U-shaped steels 6.

[0031] In the embodiment of the present utility model, as Figure 3 As shown, the double U-shaped steel 6 includes an upper support connection block 61, a lower support connection block 62, and two U-shaped steel units 63 spaced side by side and connected between the upper support connection block 61 and the lower support connection block 62. The upper support connection block 61 is fixed to the lower surface of the upper connecting plate 1, and the lower support connection block 62 is connected to the lower surface of the middle partition plate 3. The two ends of each U-shaped steel unit 63 are respectively connected to the outer walls of the upper support connection block 61 and the lower support connection block 62. Specifically, the thickness of the upper support connection block 61 and the lower support connection block 62 is greater than the wall thickness of the U-shaped steel unit 63 (the two ends of the U-shaped steel unit 63 are connected to one side of the upper support connection block 61 and the lower support connection block 62), and the width of the upper support connection block 61 and the lower support connection block 62 is greater than the sum of the widths of the two U-shaped steel units 63. In the implementation of the present invention, the above-mentioned double U-shaped steel 6 is an integrated structure; specifically, the non-supporting area of ​​the integrated U-shaped steel is subjected to a stiffness weakening treatment (setting a weak layer), so that the thickness of the U-shaped deformation end is smaller than the thickness of the supporting end, and the middle part of the U-shaped deformation end is hollowed out to form the double U-shaped steel 6; that is, the stiffness of the double U-shaped steel 6 is reduced by reducing the thickness of the U-shaped deformation end and hollowing out the middle part of the U-shaped steel.

[0032] Specifically, the upper U-shaped steel (including the single U-shaped steel 5 and the double U-shaped steel 6) is connected to the upper connecting plate 1 via upper connecting bolts 4, and the upper and lower surfaces of the upper U-shaped steel (including the single U-shaped steel 5 and the double U-shaped steel 6) are respectively welded to the upper connecting plate 1 and the middle partition plate 3; and the double U-shaped steel 6 is arranged at the four corners of the upper connecting plate 1 and the middle partition plate 3. The lower U-shaped steel 10 is connected to the lower connecting plate 2 via lower connecting bolts 9, and the upper and lower surfaces of the lower U-shaped steel 10 are respectively welded to the middle partition plate 3 and the lower connecting plate 2.

[0033] In an embodiment of the present invention, the combined seismic isolation support includes eight upper U-shaped steels and four lower U-shaped steels 10 , and the thickness of the lower U-shaped steels 10 is greater than that of the upper U-shaped steels. The four lower U-shaped steels 10 are symmetrically arranged on four sides.

[0034] In an embodiment of the present invention, the open side of the lower U-shaped steel 10 is an isosceles trapezoidal structure (which can also be considered an isosceles trapezoidal structure formed by chopping off the sharp corners of the open end of the lower U-shaped steel 10), and the width of the closed side of the lower U-shaped steel 10 (i.e., the deformed side of the lower U-shaped steel 10) is greater than the width of the open side of the lower U-shaped steel 10 (i.e., the supporting end of the lower U-shaped steel 10). The U-shaped end of the lower U-shaped steel 10 is reinforced, and the flat end is lengthened to increase the contact area with the lower connecting plate 2 and the middle partition plate 3 to enhance stability, and the corners of the flat end are cut off.

[0035] In an embodiment of the present utility model, bolt holes are provided on the upper connecting plate 1 and the lower connecting plate 2 (not shown in the figure); the upper connecting plate 1 and the lower connecting plate 2 are respectively connected to the bottom of the column and the top of the foundation by bolts; specifically, the reserved steel bars are threaded and passed through the bolt holes of the seismic isolation bearings, and then connected by nuts, and the gaps are filled with grouting material. During the installation process, holes are opened in the connecting plates according to the reinforcement.

[0036] Specifically, the composite seismic isolation bearing comprises a sandwich rubber structure consisting of a rubber layer 7 and steel plates 8. The upper connecting plate 1 and the middle partition plate 3 are connected to the uppermost and lowermost steel plates 8 of the sandwich rubber structure, respectively. The rubber layer 7 is made by adding various additives to natural rubber to enhance its damping and aging resistance.

[0037] The upper U-shaped steel and the lower U-shaped steel 10 are both made of Q195, Q215, Q235, Q255, Q275, etc.

[0038] The aforementioned combined seismic isolation bearing has a lower U-shaped steel section in the upper portion, which is welded to the upper connecting plate 1 and the middle partition plate 3 to better dissipate seismic energy during an earthquake and facilitate post-earthquake resetting. The lower portion is made of thick U-shaped steel with sharp corners removed, which meets the vertical bearing capacity requirements of the columns. This section is welded to the middle partition plate 3 and the lower connecting plate 2. Rebar reserved in the lower foundation is threaded and passed through the lower connecting plate 2 and the thick U-shaped steel, where it is connected to the upper portion of the U-shaped steel plate with nuts. Furthermore, the various U-shaped components in this combined seismic isolation bearing are symmetrically and evenly arranged to cope with earthquakes in different directions.

[0039] This modular isolation bearing utilizes a sandwich rubber structure combined with U-shaped steel for structural seismic isolation. While meeting horizontal isolation requirements, it effectively eliminates the limitations of traditional isolation bearings, which lack vertical isolation and are unable to withstand tensile forces. The combination of the sandwich rubber structure and U-shaped steel integrates load-bearing, energy-dissipating isolation, and relocation, effectively isolating the superstructure from seismic forces in different directions. This extends the natural vibration period of the superstructure, avoids the site's dominant period, reduces seismic damage to the superstructure, and ensures structural safety.

[0040] The U-shaped steel and double U-shaped steel are deformed to dissipate the energy of the earthquake wave, and the U-shaped steel and double U-shaped steel still have the vertical bearing capacity after the dislocation of the sandwich rubber structure and the deformation of the single U-shaped steel and double U-shaped steel. The elastic restoring force of the single U-shaped steel and double U-shaped steel enables the seismic isolation bearing to have a reset function. Under the action of vertical earthquake, the lower U-shaped steel at the lower part plays a role, and reduces the impact of the earthquake on the structure through its own elastic deformation. The thin steel plate and the rubber layer in the upper part of the seismic isolation bearing are bonded to each other, and the thin steel plate has a restraining effect on the rubber layer. The sandwich rubber structure formed by them bears the load transmitted from the upper structure together with the single U-shaped steel and the double U-shaped steel. The thin steel plate and the rubber layer have bonding force and have a certain tensile strength. The tensile force borne by the seismic isolation bearing is mainly borne by the single U-shaped steel and the double U-shaped steel, supplemented by the sandwich rubber structure.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined seismic isolation support, characterized in that: include: Upper connecting plate, middle partition plate and lower connecting plate; The upper connecting plate is arranged on the lower connecting plate, and the middle partition plate is arranged between the upper connecting plate and the lower connecting plate; A sandwich rubber structure and a plurality of upper U-shaped steels are provided between the upper connecting plate and the middle partition plate; the top and bottom ends of the sandwich rubber structure are connected to the middle of the upper connecting plate and the middle partition plate, respectively; the plurality of upper U-shaped steels are arranged along the four sides of the sandwich rubber structure, and the open ends of the plurality of upper U-shaped steels are all arranged toward the sandwich rubber structure, and the closed ends of the plurality of upper U-shaped steels are all arranged to protrude from the outer sides of the upper connecting plate and the middle partition plate; A plurality of lower U-shaped steels are fixedly arranged between the middle partition plate and the lower connecting plate. The cross-section of the opening side of the plurality of lower U-shaped steels is trapezoidal, and the closed ends of the plurality of lower U-shaped steels protrude from the outer sides of the lower connecting plate and the middle partition plate.

2. The combined seismic isolation support according to claim 1, wherein: Part of the upper U-shaped steel is a single U-shaped steel, and part of the upper U-shaped steel is a double U-shaped steel, and the single U-shaped steel and the double U-shaped steel are arranged at intervals.

3. The combined seismic isolation support according to claim 2, wherein: The double U-shaped steel comprises an upper support connection block, a lower support connection block and two U-shaped steel units spaced side by side and connected between the upper support connection block and the lower support connection block, wherein the upper support connection block is fixed on the lower surface of the upper connecting plate, the lower support connection block is connected to the lower surface of the middle partition plate, and the two ends of each U-shaped steel unit are respectively connected to the outer walls of the upper support connection block and the lower support connection block; The thickness of the upper supporting connection block and the lower supporting connection block are both greater than the wall thickness of the U-shaped steel unit, and the width of the upper supporting connection block and the lower supporting connection block are both greater than the sum of the widths of the two U-shaped steel units.

4. The combined seismic isolation support according to claim 3, wherein: The double U-shaped steel is an integrated structure.

5. The combined seismic isolation support according to claim 1, wherein: The upper U-shaped steel is connected to the upper connecting plate through upper connecting bolts, and the upper and lower surfaces of the upper U-shaped steel are respectively welded to the upper connecting plate and the middle partition plate.

6. The combined seismic isolation support according to claim 1, wherein: The lower U-shaped steel is connected to the lower connecting plate through lower connecting bolts, and the upper and lower surfaces of the lower U-shaped steel are respectively welded to the middle partition plate and the lower connecting plate.

7. The combined seismic isolation support according to claim 1, wherein: The sandwich rubber structure is formed by laying steel plates and rubber layers on top of each other, and a rubber layer is provided between any two steel plates.

8. The combined seismic isolation support according to claim 1, wherein: The combined seismic isolation support includes eight upper U-shaped steels and four lower U-shaped steels, and the thickness of the lower U-shaped steels is greater than that of the upper U-shaped steels.

9. The combined seismic isolation support according to claim 1, wherein: The open side of the lower U-shaped steel is in an isosceles trapezoidal structure, and the width of the closed side of the lower U-shaped steel is greater than the width of the open side of the lower U-shaped steel.

10. The combined seismic isolation support according to claim 1, wherein: Bolt holes are provided on both the upper connecting plate and the lower connecting plate.

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