A three-dimensional seismic isolation bearing with dual vibration control

Abstract

The present invention provides a three-dimensional seismic isolation bearing with dual vibration control. The present invention includes a horizontal rubber seismic isolation bearing and a vertical seismic isolation bearing. The vertical seismic isolation bearing includes an upper connecting plate, a multi-layer thick rubber bearing, and a lower connecting plate. The upper connecting plate is located above the lower connecting plate. The multi-layer thick rubber bearing is clamped between the upper connecting plate and the lower connecting plate. The horizontal rubber seismic isolation bearing and the vertical seismic isolation bearing are vertically connected in series. The horizontal rubber seismic isolation bearing realizes horizontal seismic isolation, and the vertical seismic isolation bearing realizes vertical seismic isolation. The isolation dimensions of the two are decoupled and superimposed on each other to realize three-dimensional seismic isolation. In addition, the multi-layer thick rubber bearing used can provide a strong elastic support effect, and the seismic isolation capacity is further improved.

Description

Technical Field

[0001] The present invention relates to a vibration isolation support, in particular to a three-dimensional vibration isolation support capable of dual vibration and vibration control. Background Art

[0002] Traditional seismic isolation bearings have to bear the large vertical gravity of the isolation target object and have to have a small horizontal stiffness to achieve horizontal isolation. In addition, due to material and structural limitations, traditional seismic isolation bearings (such as isolation rubber bearings and friction pendulums) have a large vertical stiffness and cannot achieve vertical vibration isolation.

[0003] In addition, most buildings do not require vertical seismic isolation because during an earthquake, only a small area near the epicenter requires vertical seismic isolation, which is mainly used to isolate the longitudinal waves of the earthquake, while areas outside the epicenter only require horizontal seismic isolation, which is mainly used to isolate the transverse waves of the earthquake. This is also the reason why traditional horizontal seismic isolation bearings can be widely promoted.

[0004] In recent years, convenient and fast above-ground and underground rail transit has rapidly developed, creating significant commercial value for buildings along rail lines and near transportation hubs. In low-intensity zones, the vibration and noise generated by trains operating on the tracks can significantly impact the comfort and commercial value of buildings along the lines and around transportation hubs. However, traditional isolation bearings cannot isolate vertical vibrations or noise along solid-body propagation paths. Therefore, in addition to horizontal isolation that meets the design intensity requirements, vertical isolation must be added to achieve three-dimensional isolation. Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a three-dimensional seismic isolation bearing with dual vibration control, which can simultaneously meet the requirements of horizontal seismic isolation and vertical seismic isolation, and ultimately achieve three-dimensional seismic isolation.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] A three-dimensional seismic isolation bearing with dual vibration control includes a horizontal rubber seismic isolation bearing and a vertical seismic isolation bearing. The vertical seismic isolation bearing includes an upper connecting plate, a multi-layer thick rubber bearing, and a lower connecting plate. The upper connecting plate is located above the lower connecting plate. The multi-layer thick rubber bearing is clamped between the upper connecting plate and the lower connecting plate. The horizontal rubber seismic isolation bearing is installed on the upper connecting plate.

[0008] Through the above technical solution, the horizontal rubber isolation bearing and the vertical isolation bearing are vertically connected in series. The horizontal rubber isolation bearing realizes horizontal isolation, and the vertical isolation bearing realizes vertical isolation. The isolation dimensions of the two are decoupled and superimposed on each other to realize three-dimensional isolation. In addition, the multi-layer thick rubber bearings used can provide a strong elastic support effect, and the isolation capacity is further improved.

[0009] Preferably, it also includes a guide rod, which passes through the multi-layer thick rubber support, one end of the guide rod is fixedly connected to the lower connecting plate, and the other end of the guide rod passes through the upper connecting plate.

[0010] Through the above technical solution, the vertical seismic isolation bearing can only move vertically under the limiting action of the guide rod, which can achieve a more stable vertical seismic isolation effect; in addition, the guide rod has two functions: one is to make the multiple layers of thick rubber elastically deform along a fixed direction, providing only vertical stiffness; the other is to limit the related horizontal displacement between the upper connecting plate and the lower connecting plate to resist shear.

[0011] Preferably, the rod end of the guide rod facing away from the lower connecting plate protrudes from the upper connecting plate and is threadedly connected to a limiting nut.

[0012] Through the above technical solution, the upper connecting plate, the lower connecting plate and the vertical seismic isolation bearing are connected to each other through the guide rod and the limit nut, which makes disassembly and assembly more convenient; the limit nut makes the three-dimensional bearing have the best pull-out performance.

[0013] Preferably, a guide hole is provided in the multi-layer thick rubber support, the guide rod passes through the guide hole, and the aperture of the guide hole is larger than the rod diameter of the guide rod.

[0014] Through the above technical solution, during the deformation of the multi-layer thick rubber, the aperture setting of the guide hole can reduce the direct extrusion force generated between the multi-layer thick rubber and the guide rod, and the actual service life of the multi-layer thick rubber is greatly improved.

[0015] Preferably, high-strength shear bolts are connected between the horizontal rubber isolation bearing and the upper connecting plate.

[0016] Through the above technical solution, high-strength shear bolts are used to connect the horizontal rubber isolation bearing and the upper connecting plate, which not only enables the horizontal rubber isolation bearing and the upper connecting plate to be detachably connected, but also the high-strength shear bolts can greatly improve the connection stability between the horizontal rubber isolation bearing and the upper connecting plate.

[0017] Preferably, a semi-enclosed viscous damper is further included, wherein the semi-enclosed viscous damper is installed between the upper connecting plate and the lower connecting plate, and the semi-enclosed viscous damper is used to produce a shock-absorbing and damping effect on the upper connecting plate and the lower connecting plate.

[0018] Through the above technical solution, the semi-enclosed viscous damper is a velocity damper, and the superimposed damping ratio enables the shock absorption effect of the vertical seismic isolation bearing to be optimized.

[0019] Preferably, the semi-closed viscous damper includes a damping cylinder and a liquid storage cylinder, the damping cylinder is installed on the upper connecting plate, the liquid storage cylinder is installed on the lower connecting plate, the damping cylinder is arranged in the liquid storage cylinder, and a gap is left between the damping cylinder and the liquid storage cylinder, and the gap is filled with viscous damping fluid.

[0020] Through the above technical solution, vertical relative displacement is generated between the upper connecting plate and the lower connecting plate during the vertical vibration isolation process, resulting in relative movement between the damping cylinder and the liquid storage cylinder to shear the damping liquid, provide damping force, and further enhance the three-dimensional vibration isolation effect.

[0021] Preferably, the liquid storage cylinder includes an outer cylinder ring and an inner cylinder column, the inner cylinder column is located in the middle of the outer cylinder ring, the damping cylinder is sleeved on the outside of the inner cylinder column, and a liquid storage cavity is formed between the damping cylinder and the inner cylinder column, and the viscous damping liquid is filled in the liquid storage cavity.

[0022] Through the above technical solution, the viscous damping fluid is not only distributed between the inner cylinder column and the inner cylinder wall of the damping cylinder, but also distributed between the outer cylinder ring and the outer cylinder wall of the damping cylinder, thereby making the damping effect of the damping cylinder stronger and further improving the three-dimensional seismic isolation effect.

[0023] Preferably, the number of the multi-layer thick rubber bearings is 9, and the 9 multi-layer thick rubber bearings are arranged in a rectangular array;

[0024] The number of the semi-enclosed viscous dampers is 4, and the 4 semi-enclosed viscous dampers are arranged in a rectangular array. The 4 semi-enclosed viscous dampers are arranged in the 9 multi-layer thick-fleshed rubber bearings.

[0025] Through the above technical solution, 9 multi-layer thick rubber bearings distributed in a rectangular array and 4 semi-enclosed viscous dampers distributed in a rectangular array are used in conjunction with each other, and the seismic damping effect between the upper connecting plate and the lower connecting plate is better.

[0026] The technical effects of the present invention are mainly reflected in the following aspects:

[0027] (1) Decoupling and separation of horizontal isolation and vertical isolation are achieved, the force transmission path is clear, which facilitates seismic isolation analysis and design, and the structure is stable and reliable;

[0028] (2) The vertical seismic isolation bearing adopts a multi-layer thick rubber bearing parallel design, which can control and fully release the extrusion deformation of the thick rubber, and maintain a long service life of the thick rubber.

[0029] (3) The thick rubber of the vertical isolation bearing itself has a certain damping capacity. A semi-enclosed viscous damper is superimposed in parallel to achieve an optimal vertical damping ratio for the vertical isolation bearing, thereby obtaining the optimal shock absorption effect.

[0030] (4) Thick rubber bearings adopt modular design, which can be modularly combined according to the requirements of three-dimensional bearings of different tonnages, which can not only reduce production costs but also quickly respond to market demand;

[0031] (5) The vertical seismic isolation support limits the horizontal movement of the vertical seismic isolation support through the guide rod and has an anti-pullout function to ensure the safety of the support operation;

[0032] (6) Compared with steel springs, the parallel connection of thick rubber bearings has higher space utilization, smaller vertical isolation bearings, lower costs, and a damping ratio closer to the optimal value.

[0033] (7) The vertical projection area of ​​the vertical isolation bearing is larger than that of the horizontal isolation rubber bearing. The vertical isolation bearing is connected in series under the horizontal isolation rubber bearing to make the overall three-dimensional isolation bearing more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of embodiment 1 Figure 1 ;

[0035] Figure 2 for Figure 1 AA cross-section of

[0036] Figure 3 This is a schematic diagram of the structure of embodiment 1 Figure 2 , used to highlight the structural state when a semi-enclosed viscous damper is installed;

[0037] Figure 4 Schematic diagram of the structure of the semi-enclosed viscous damper in Example 1;

[0038] Figure 5 The structure of the semi-enclosed viscous damper in the second embodiment is shown in FIG. Figure 1 ;

[0039] Figure 6 The structure of the semi-enclosed viscous damper in the second embodiment is shown in FIG. Figure 2 .

[0040] Figure numerals: 1. Horizontal rubber isolation bearing; 2. Vertical isolation bearing; 21. Upper connecting plate; 22. Multi-layer thick rubber bearing; 23. Lower connecting plate; 3. Guide rod; 4. Limit nut; 5. Guide hole; 6. High-strength shear bolt; 7. Semi-closed viscous damper; 71. Damping cylinder; 72. Liquid storage cylinder; 721. Outer cylinder ring; 722. Inner cylinder column; 8. Viscous damping liquid; 9. Liquid storage chamber; 10. Mounting groove; 11. Mounting cover; 12. First mounting bolt; 13. Positioning hole; 14. Second mounting bolt; 15. Mounting screw hole; 16. Liquid control part; 17. Liquid control ring; 18. Liquid level control ring; 19. Matching ring; 20. Threaded groove. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp. Example 1

[0042] A three-dimensional seismic isolation bearing with dual vibration control, see Figure 1 From top to bottom, a horizontal rubber isolation bearing 1 and a vertical isolation bearing 2 are arranged.

[0043] Among them, see Figure 1 The vertical seismic isolation bearing 2 located below includes an upper connecting plate 21, a multi-layer thick rubber bearing 22, and a lower connecting plate 23. The upper connecting plate 21 is located above the lower connecting plate 23, and the multi-layer thick rubber bearing 22 is clamped between the upper connecting plate 21 and the lower connecting plate 23.

[0044] See also Figure 2 The number of the multi-layer thick rubber bearings 22 is 9, and the 9 multi-layer thick rubber bearings 22 are arranged in a rectangular array.

[0045] See also Figure 1 , 9 guide rods 3 are also provided, one end of the guide rod 3 is fixedly connected to the lower connecting plate 23, and the other end of the guide rod 3 passes through the upper connecting plate 21.

[0046] See also Figure 1 Each multi-layer thick rubber bearing 22 is provided with a guide hole 5. The diameter of the guide hole 5 is larger than the diameter of the guide rod 3. The guide rod 3 passes through the guide hole 5, that is, the guide rod 3 passes through the multi-layer thick rubber bearing 22. The end of the guide rod 3 facing away from the lower connecting plate 23 protrudes from the upper connecting plate 21 and is threadedly connected to a limit nut 4, thereby installing the multi-layer thick rubber bearing 22 between the upper connecting plate 21 and the lower connecting plate 23.

[0047] See also Figure 1A high-strength shear bolt 6 is connected between the horizontal rubber isolation support 1 and the upper connecting plate 21 to ensure that the horizontal rubber isolation support 1 is stably installed on the upper connecting plate 21.

[0048] See also Figure 3 as well as Figure 4 A semi-enclosed viscous damper 7 is also provided between the upper connecting plate 21 and the lower connecting plate 23. The semi-enclosed viscous damper 7 is primarily used to provide vibration damping for the upper connecting plate 21 and the lower connecting plate 23. There are four semi-enclosed viscous dampers 7, arranged in a rectangular array within the nine multi-layer thick-walled rubber bearings 22.

[0049] Specifically, the semi-enclosed viscous damper 7 includes a damping cylinder 71 and a fluid reservoir 72. The damping cylinder 71 is mounted on the upper connecting plate 21, and the fluid reservoir 72 is mounted on the lower connecting plate 23. The damping cylinder 71 is disposed within the fluid reservoir 72, with a gap between the damping cylinder 71 and the fluid reservoir 72. The gap is filled with viscous damping fluid 8.

[0050] The liquid storage cylinder 72 includes an outer cylinder ring 721 and an inner cylinder column 722. The inner cylinder column 722 is located in the middle of the outer cylinder ring 721. The damping cylinder 71 is sleeved on the outside of the inner cylinder column 722. A liquid storage chamber 9 is formed between the damping cylinder 71 and the inner cylinder column 722. The viscous damping fluid 8 is filled in the liquid storage chamber 9. This arrangement ensures that the damping fluid fills the gap between the damping cylinder 71 and the liquid storage cylinder 72 after the damping fluid is filled, without generating bubbles or leakage. During the vertical seismic isolation process, vertical relative displacement occurs between the upper connecting plate 21 and the lower connecting plate 23, resulting in relative motion between the damping cylinder 71 and the liquid storage cylinder 72, shearing the damping fluid and providing damping force. During the motion, the damping fluid always fills the gap.

[0051] Example 2: The difference from Example 1 is that:

[0052] See also Figure 5 as well as Figure 6 A mounting groove 10 is provided on the end surface of the liquid storage cylinder 72 facing away from the inner cylinder column 722. The mounting groove 10 corresponds to the inner cylinder column 722 and extends into the inner cylinder column 722. A mounting cover 11 is slidably connected in the mounting groove 10. A first mounting bolt 12 is connected to the mounting cover 11. The first mounting bolt 12 passes through and is threadedly connected to the inner cylinder column 722. A positioning hole 13 is provided on the inner cylinder wall of the damping cylinder 71. The first mounting bolt 12 can pass through the inner cylinder column 722 and be inserted into the positioning hole 13.

[0053] When locking sill 75 with the help of hinged joint 73, locking sill 71 is positioned between locking sill 71 and locking sill 72, and locking sill 72. When hinged joint 73 is positioned at locking sill 71, locking sill 71 is located in the state that stretches out from locking sill 74.

[0054] In the above structure, the positions of the liquid storage cylinder 72 and the damping cylinder 71 can be fixedly adjusted, and the viscous damping fluid 8 between the liquid storage cylinder 72 and the damping cylinder 71 is more evenly distributed, and the seismic isolation capability is stronger.

[0055] See also Figure 5 as well as Figure 6 , further comprising a second mounting bolt 14 , a mounting screw hole 15 is provided on the mounting cover 11 , the second mounting bolt 14 passes through the lower connecting plate 23 and is threadedly connected to the mounting screw hole 15 .

[0056] Therefore, when the viscous damping fluid 8 is cured, the mounting cover 11 is rotated to the notch position of the mounting groove 10, and then the second mounting bolt 14 is connected between the mounting cover 11 and the lower connecting plate 23. This not only fixes the mounting cover 11 and the first mounting bolt 12 at the specified position, but also improves the connection stability between the liquid storage cylinder 72 and the lower connecting plate 23.

[0057] See also Figure 5 as well as Figure 6 , a liquid control member 16 is further provided, the liquid control member 16 includes a liquid control ring 17, the liquid control ring 17 is sleeved on the outside of the damping cylinder 71, and a liquid level control ring 18 is provided on the end of the liquid control ring 17. When the liquid control ring 17 is sleeved against the outer cylinder ring 721, the liquid level control ring 18 can extend into the interior of the outer cylinder ring 721;

[0058] A matching ring 19 is provided on the liquid control ring 17, and the matching ring 19 and the liquid control ring 17 are concentrically arranged with each other. A circular thread groove 20 is provided on the upper connecting plate 21, and the matching ring 19 can be threadedly connected to the thread groove 20; when the matching ring 19 is threadedly connected to the thread groove 20, the liquid level control ring 18 can be detached from the inside of the outer cylinder ring 721.

[0059] Therefore, when injecting the viscous damping liquid 8 into the damping cylinder 71 and the liquid reservoir 72, the liquid level control ring 18 on the liquid control ring 17 can also be inserted into the outer cylinder ring 721 to reduce the distance between the damping cylinder 71 and the liquid reservoir 72. The viscous damping liquid 8 will overflow from the damping cylinder 71 until it fills the space between the liquid level control ring 18, the damping cylinder 71 and the liquid reservoir 72. When the viscous damping liquid 8 solidifies, the liquid level control ring 18 can be pulled out of the outer cylinder ring 721, the mating ring 19 and the threaded groove 20 are threadedly engaged with each other, and the liquid control member 16 can be fixed to the upper connecting plate 21.

[0060] The above structure can not only improve the connection strength between the damping cylinder 71 and the upper connecting plate 21 , but also stably control the liquid level of the viscous damping fluid 8 between the outer cylinder ring 721 and the damping cylinder 71 . Example 3

[0061] A method for manufacturing a three-dimensional seismic isolation bearing with dual vibration control, the processing steps of which are as follows:

[0062] Step 1: Turn the upper connecting plate 21 and the damping cylinder 71 upside down, with the opening of the damping cylinder 71 facing upwards;

[0063] Step 2: Pour the viscous damping fluid 8 into the damping cylinder 71;

[0064] Step 3: Put the liquid storage cylinder 72 upside down into the damping cylinder 71, and insert the inner cylinder column 722 in the liquid storage cylinder 72 into the damping cylinder 71;

[0065] Step 4: Rotate the mounting cover 11 and the first mounting bolt 12 forward, and the first mounting bolt 12 passes through the inner cylinder 722, and the bolt head of the first mounting bolt 12 is inserted into the positioning hole 13, until the spacing and relative position between the inner cylinder 722 and the damping cylinder 71 are controlled to the specified size;

[0066] Step 5: Insert the liquid level control ring 18 of the liquid control member 16 between the outer cylinder ring 721 and the damping cylinder 71. Then, further rotate the mounting cover 11 and the first mounting bolt 12 in the forward direction. This will further reduce the distance between the inner cylinder column 722 and the damping cylinder 71, and the viscous damping fluid 8 in the damping cylinder 71 will overflow into the space between the damping cylinder 71 and the outer cylinder ring 721.

[0067] Step 6: After the viscous damping liquid 8 solidifies, the liquid control member 16 is moved toward the upper connecting plate 21 , and the mating ring 19 on the liquid control member 16 is threadedly connected to the thread groove 20 ;

[0068] Step 7: Reversely rotate the mounting cover 11 and the first mounting bolt 12 to remove the first mounting bolt 12 from the positioning hole 13 until the mounting cover 11 moves to the notch position of the mounting slot 10;

[0069] Step 8: The second mounting bolt 14 passes through the lower connecting plate 23 and is threadedly connected to the mounting screw hole 15 , thereby completing a stable connection between the lower connecting plate 23 and the mounting cover 11 .

[0070] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A three-dimensional seismic isolation support with dual vibration control, comprising a horizontal rubber seismic isolation support (1), characterized by: It also includes a vertical seismic isolation support (2), which includes an upper connecting plate (21), a multi-layer thick rubber support (22), and a lower connecting plate (23). The upper connecting plate (21) is located above the lower connecting plate (23), the multi-layer thick rubber support (22) is clamped between the upper connecting plate (21) and the lower connecting plate (23), and the horizontal rubber seismic isolation support (1) is installed on the upper connecting plate (21); The semi-enclosed viscous damper (7) is also included. The semi-enclosed viscous damper (7) is installed between the upper connecting plate (21) and the lower connecting plate (23). The semi-enclosed viscous damper (7) is used to generate a shock-absorbing and damping effect on the upper connecting plate (21) and the lower connecting plate (23). The semi-enclosed viscous damper (7) comprises a damping cylinder (71) and a liquid storage cylinder (72). The damping cylinder (71) is mounted on an upper connecting plate (21), and the liquid storage cylinder (72) is mounted on a lower connecting plate (23). The damping cylinder (71) is arranged in the liquid storage cylinder (72). A gap is left between the damping cylinder (71) and the liquid storage cylinder (72), and the gap is filled with viscous damping liquid (8). The liquid storage cylinder (72) comprises an outer cylinder ring (721) and an inner cylinder column (722). The inner cylinder column (722) is located in the middle of the outer cylinder ring (721). The damping cylinder (71) is sleeved on the outer side of the inner cylinder column (722). A liquid storage cavity (9) is formed between the damping cylinder (71) and the inner cylinder column (722). The viscous damping liquid (8) is filled in the liquid storage cavity (9). A mounting groove (10) is provided on the end surface of the liquid storage cylinder (72) facing away from the inner cylinder column (722), the mounting groove (10) corresponding to the inner cylinder column (722) and extending into the inner cylinder column (722), a mounting cover (11) is slidably connected in the mounting groove (10), a first mounting bolt (12) is connected to the mounting cover (11), the first mounting bolt (12) passes through and is threadedly connected to the inner cylinder column (722), a positioning hole (13) is provided on the inner cylinder wall of the damping cylinder (71), the first mounting bolt (12) can pass through the inner cylinder column (722) and be inserted into the positioning hole (13).

2. The three-dimensional seismic isolation bearing with dual vibration control according to claim 1 is characterized by: It also includes a guide rod (3), which passes through the multi-layer thick rubber support (22), one end of the guide rod (3) is fixedly connected to the lower connecting plate (23), and the other end of the guide rod (3) passes through the upper connecting plate (21).

3. The three-dimensional seismic isolation bearing with dual vibration control according to claim 2 is characterized by: The rod end of the guide rod (3) facing away from the lower connecting plate (23) protrudes from the upper connecting plate (21) and is threadedly connected to a limiting nut (4).

4. The three-dimensional seismic isolation bearing with dual vibration control according to claim 2 is characterized by: A guide hole (5) is provided in the multi-layer thick rubber support (22), and the guide rod (3) passes through the guide hole (5). The diameter of the guide hole (5) is larger than the rod diameter of the guide rod (3).

5. A three-dimensional seismic isolation bearing with dual vibration control according to any one of claims 1 to 4, characterized in that: High-strength shear bolts (6) are connected between the horizontal rubber vibration isolation support (1) and the upper connecting plate (21).

6. The three-dimensional seismic isolation bearing with dual vibration control according to claim 1 is characterized by: The number of the multi-layer thick rubber bearings (22) is 9, and the 9 multi-layer thick rubber bearings (22) are arranged in a rectangular array; The number of the semi-enclosed viscous dampers (7) is four, and the four semi-enclosed viscous dampers (7) are arranged in a rectangular array. The four semi-enclosed viscous dampers (7) are arranged in the nine multi-layer thick rubber supports (22).

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