A three-dimensional tensile and vibration dual-control decoupling system with quasi-zero stiffness

Abstract

The present invention provides a three-dimensional shock and vibration dual-control decoupling system with quasi-zero stiffness for anti-pullout, comprising an upper structure, a vertical vibration isolation / shock absorption device, a horizontal vibration isolation device, and a lower foundation; one end of the vertical vibration isolation / shock absorption device is connected to the upper structure, and the other end is connected to the horizontal vibration isolation device, and the horizontal vibration isolation device is connected to the lower foundation. The present invention can adjust different negative stiffness regions according to the design to achieve dual control of shock and vibration, enable both horizontal vibration isolation and vertical vibration isolation / shock absorption and decouple them from each other, and function without tension in the entire system.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake resistance in civil engineering, and particularly to a three-dimensional vibration and shock dual-control decoupling system with quasi-zero stiffness and anti-pulling function. Background Art

[0002] In recent years, with the general improvement in the understanding of the hazards caused by vertical earthquakes and subway vibrations, and the non-negligible horizontal earthquakes, most of the vertical vibration isolation / shock absorption devices are quasi-zero stiffness devices, while most of the horizontal isolation devices are rubber bearings and friction pendulum bearings. However, there are very few three-dimensional vibration and shock dual-control devices with both vertical vibration isolation / shock absorption and horizontal isolation. Moreover, it is a major problem to make the device have anti-pulling ability and a clear three-dimensional decoupling method.

[0003] Therefore, there is an urgent need for a three-dimensional vibration and shock dual-control device with vertical vibration isolation / shock absorption ability and horizontal isolation ability, and a three-dimensional vibration and shock dual-control system that also has anti-pulling ability and a clear three-dimensional decoupling method. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a three-dimensional vibration and shock dual-control decoupling system with quasi-zero stiffness and anti-pulling function. This system can adjust different negative stiffness regions according to the design to achieve dual control of vibration and shock, enable both horizontal and vertical vibration isolation without mutual influence, and prevent tensile phenomena in the whole system, so as to solve the problems of quasi-zero stiffness devices with vertical vibration isolation / shock absorption ability and horizontal isolation ability, while also having anti-pulling ability and a clear three-dimensional decoupling method.

[0005] The present invention provides a three-dimensional vibration and shock dual-control decoupling system with quasi-zero stiffness and anti-pulling function, including an upper structure, a vertical vibration isolation / shock absorption device, a horizontal vibration isolation device, and a lower foundation; one end of the vertical vibration isolation / shock absorption device is connected to the upper structure, the other end is connected to the horizontal vibration isolation device, and the horizontal vibration isolation device is connected to the lower foundation.

[0006] Further, the vertical vibration isolation / shock absorption device includes an upper connecting plate of the vertical device, a tensile cable, a positive stiffness system, a negative stiffness system, and a lower connecting plate of the vertical device;

[0007] The upper connecting plate of the vertical device is connected to the upper structure through a connecting bar of the upper connecting plate of the vertical device; the tensile cable is arranged between the upper connecting plate of the vertical device and the lower connecting plate of the vertical device; the lower connecting plate of the vertical device is connected to the horizontal vibration isolation device;

[0008] The inner ring of the outer sleeve at the upper connecting plate of the vertical device and the outer ring of the outer sleeve at the lower connecting plate of the vertical device define the outer sleeve; the inner ring of the inner sleeve at the upper connecting plate of the vertical device and the outer ring of the inner sleeve at the lower connecting plate of the vertical device define the inner sleeve, and both the positive stiffness system and the negative stiffness system are located inside the outer sleeve and outside the inner sleeve.

[0009] Furthermore, the positive stiffness system is one of a positive stiffness vertical spring, a positive stiffness disc spring, and an annular spring, and the positive stiffness system is in a compressed state at any time after installation.

[0010] Furthermore, the annular spring includes a double-layer annular spring and a triple-layer annular spring; the triple-layer annular spring includes an outer ring, a middle ring, an inner ring, and end rings.

[0011] Furthermore, the negative stiffness system is a negative stiffness disc spring.

[0012] Furthermore, the tension cable is made of steel strands.

[0013] Furthermore, a groove is provided on the upper surface of the lower connecting plate of the vertical device for limiting the positive stiffness system.

[0014] Furthermore, the horizontal seismic isolation device includes an upper connecting plate of the horizontal device, a limiting cable, a horizontal seismic isolation bearing, and a lower connecting plate of the horizontal device;

[0015] The upper connecting plate of the horizontal device is connected to the lower connecting plate of the vertical device by plate connection bolts; the upper end of the limiting cable is connected to the upper connecting plate of the horizontal device; the lower end of the limiting cable is connected to the lower connecting plate of the horizontal device; the horizontal seismic isolation bearing is provided in the middle between the upper connecting plate of the horizontal device and the lower connecting plate of the horizontal device; the lower connecting plate of the horizontal device is connected to the lower foundation through connecting ribs of the lower connecting plate of the horizontal device and is reinforced by stiffening ribs.

[0016] Furthermore, the limiting cable is made of a shape memory alloy cable and has a self-resetting ability.

[0017] Furthermore, the horizontal seismic isolation bearing uses a rubber bearing or a friction pendulum bearing.

[0018] The beneficial effects of the technical solution of the present invention compared with the prior art are as follows:

[0019] 1. The vertical load-bearing capacity is extremely large. At the static position, it is borne together by the positive stiffness system and the negative stiffness system, and its load-bearing capacity requirements can meet all ordinary buildings and even the containment of nuclear power plants, etc.;

[0020] 2. Both the vertical vibration isolation / shock device and the horizontal seismic isolation device have a tension device and have very good tensile performance;

[0021] 3. Through the action of a sleeve and a limiting device, it has an extremely clear three-dimensional decoupling function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a cross-sectional view of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness according to an embodiment of the present invention;

[0024] Figure 2 It is a positive stiffness system unit diagram of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness according to an embodiment of the present invention;

[0025] Figure 3 It is a cross-sectional view of the movement mechanism of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness in the compression state according to an embodiment of the present invention;

[0026] Figure 4 It is another cross-sectional view of the movement mechanism of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness in the compression state according to an embodiment of the present invention;

[0027] Figure 5 It is a cross-sectional view of the movement mechanism of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness in the tension state according to an embodiment of the present invention;

[0028] Figure 6 It is another cross-sectional view of the movement mechanism of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness in the tension state according to an embodiment of the present invention;

[0029] Figure 7 It is a front view of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness according to an embodiment of the present invention;

[0030] Figure 8 It is an internal perspective view of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness according to an embodiment of the present invention;

[0031] Figure 9 It is a three-dimensional wireframe diagram of the anti-pullout three-dimensional shock vibration dual-control decoupling system with quasi-zero stiffness according to an embodiment of the present invention;

[0032] Figure 10 It is a non-limiting combined sequence diagram of the vertical vibration isolation / shock device system components according to an embodiment of the present invention;

[0033] Figure 11The three-dimensional upward view of the embodiment of the present invention;

[0034] Figure 12 The three-dimensional top view of the embodiment of the present invention;

[0035] Figure 13 The cross-sectional view of the embodiment of the present invention including a friction pendulum bearing;

[0036] Figure 14 The three-dimensional cross-sectional view of the embodiment of the present invention including a rubber bearing.

[0037] Explanation of reference numerals:

[0038] 1: Upper connecting plate of the vertical device; 2: Lower connecting plate of the vertical device; 3: Tensile cable; 4: Negative stiffness disc spring; 5: Outer ring; 6: Middle ring; 7: Inner ring; 8: End ring; 9: Inner ring of the inner sleeve; 10: Outer ring of the inner sleeve; 11: Upper connecting plate of the horizontal device; 12: Lower connecting plate of the horizontal device; 13: Limit cable; 14: Stiffening rib; 15: Rubber bearing; 16: Annular spring; 17: Positive stiffness disc spring; 18: Positive stiffness vertical spring; 25: Friction pendulum bearing; 101: Superstructure; 102: Lower foundation; 201: Connecting rib of the upper connecting plate of the vertical device; 202: Connecting rib of the lower connecting plate of the horizontal device; 301: Inner ring of the outer sleeve; 302: Outer ring of the outer sleeve; 303: Plate connecting bolt; 401: Upper bolt of the stiffening rib; 402: Front bolt of the stiffening rib. Detailed implementation manners

[0039] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more unless specifically defined otherwise. In addition, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] As Figures 1 to 14 shown, the present invention provides a three-dimensional vibration isolation and vibration control decoupling system with quasi-zero stiffness for anti-pulling, which is suitable for three-dimensional vibration isolation and vibration control, and includes an upper structure 101, a vertical vibration isolation / shock device, a horizontal vibration isolation device, and a lower foundation 102. One end of the vertical vibration isolation / shock device is connected to the upper structure 101, and the other end is connected to the horizontal vibration isolation device, and the horizontal vibration isolation device is connected to the lower foundation 102.

[0043] As Figures 1 to 3 shown, when the lower foundation 102 transmits horizontal vibrations to the horizontal vibration isolation device, the upper structure 101 and the vertical vibration isolation / shock device will not be affected. When the lower foundation 102 transmits vertical vibrations to the horizontal vibration isolation device and then to the vertical vibration isolation / shock device, only vertical elastic deformation will occur, and no tensile stress will occur in the horizontal vibration isolation device through the anti-pulling sleeve.

[0044] According to a three-dimensional vibration isolation and vibration control decoupling system with quasi-zero stiffness for anti-pulling of the present invention, the vertical vibration isolation / shock device includes an upper connecting plate 1 of the vertical device, a tensile cable 3, a positive stiffness system, a negative stiffness system, and a lower connecting plate 2 of the vertical device. A groove is provided on the upper surface of the lower connecting plate 2 of the vertical device for limiting the positive stiffness system.

[0045] The upper connecting plate 1 of the vertical device is connected to the upper structure 101 through a plurality of connecting bars 201 of the upper connecting plate of the vertical device. The tensile cable 3 is arranged between the upper connecting plate 1 of the vertical device and the lower connecting plate 2 of the vertical device, and the tensile cable 3 is made of steel strands. The lower connecting plate 2 of the vertical device is connected to the horizontal vibration isolation device.

[0046] The inner ring 301 of the outer sleeve at the upper connecting plate 1 of the vertical device and the outer ring 302 of the outer sleeve at the lower connecting plate 2 of the vertical device define the outer sleeve. The inner ring 9 of the inner sleeve at the upper connecting plate 1 of the vertical device and the outer ring 10 of the inner sleeve at the lower connecting plate 2 of the vertical device define the inner sleeve, and both the positive stiffness system and the negative stiffness system are outside the outer sleeve and inside the inner sleeve.

[0047] As shown in Figures 10 to 12 , the positive stiffness system is one of the positive stiffness vertical spring 18, the positive stiffness disc spring 17, and the annular spring 16, and the positive stiffness system is in a compressed state at any time after installation. The annular spring 16 includes a double-layer annular spring and a triple-layer annular spring. The triple-layer annular spring includes an outer ring 5, a middle ring 6, an inner ring 7, and an end ring 8. As shown in Figure 1 , the negative stiffness system is the negative stiffness disc spring 4.

[0048] Among them, the positive stiffness vertical spring 18 is a linear spring that only generates positive stiffness; the positive stiffness annular spring 16 can be a double-layer annular spring or a triple-layer annular spring; the positive stiffness disc spring 17 satisfies the aspect ratio, that is both the tensile and compressive conditions will generate positive stiffness, while the negative stiffness disc spring 4 requires an aspect ratio of and must be pre-compressed within a certain range to generate negative stiffness.

[0049] Specifically, the positive stiffness system and the negative stiffness system are connected in parallel to form a quasi-zero stiffness system, and the quasi-zero stiffness system is located at the exact center of the upper connecting plate 1 of the vertical device and the lower connecting plate 2 of the vertical device. The inner sleeve is located inside the quasi-zero stiffness system, has a certain tensile effect, and is set at a certain distance from the quasi-zero stiffness system to prevent the quasi-zero stiffness system from being restricted by internal expansion under compression, and has a limiting effect and serves as a decoupling function between the horizontal and vertical directions. The outer sleeve is located outside the quasi-zero stiffness system, and it also has a certain distance from the quasi-zero stiffness system to prevent the quasi-zero stiffness system from being restricted by external expansion under compression, and has a limiting effect and serves as a decoupling function between the horizontal and vertical directions.

[0050] Among them, a tensile cable 3 is provided around the outer sleeve and is respectively connected to the lower surface of the upper connecting plate 1 of the vertical device and the upper surface of the lower connecting plate 2 of the vertical device. When the vertical vibration isolation / shock device is in the initial position, the tensile cable 3 is in the original length state; when the vertical vibration isolation / shock device is under compression, the tensile cable 3 is in a relaxed state; and when the vertical vibration isolation / shock device has tensile stress, the tensile cable 3 is tightened and tensile together with the inner sleeve, but the tensile cable 3 plays a major tensile role.

[0051] As shown in Figure 8 , according to a three-dimensional vibration isolation and shock control decoupling system with quasi-zero stiffness and anti-pullout of the present invention, the horizontal vibration isolation device includes an upper connecting plate 11 of the horizontal device, a limiting cable 13, a horizontal vibration isolation support, and a lower connecting plate 12 of the horizontal device. The upper connecting plate 11 of the horizontal device is connected to the lower connecting plate 2 of the vertical device through a plate connecting bolt 303. At the same time, the upper surface of the upper connecting plate 11 of the horizontal device contacts the upper sleeve cover plate of the lower connecting plate 12 of the horizontal device to form a tensile sleeve. The tensile sleeve at this time can be designed to be tensile after bearing or only tensile when tensile stress appears.

[0052] The upper end of the limit cable 13 is connected to the upper connecting plate 11 of the horizontal device, and the lower end of the limit cable 13 is connected to the lower connecting plate 12 of the horizontal device. The horizontal seismic isolation bearing is arranged exactly in the middle between the upper connecting plate 11 of the horizontal device and the lower connecting plate 12 of the horizontal device. The lower connecting plate 12 of the horizontal device is connected to the lower foundation 102 through the connecting rib 202 of the lower connecting plate of the horizontal device and is reinforced by the stiffening rib 14.

[0053] Among them, the stiffening rib 14 can be connected to the lower surface of the lower connecting plate 12 of the horizontal device and the periphery of the lower foundation 102 through the upper bolt 401 of the stiffening rib and the front bolt 402 of the stiffening rib.

[0054] The limit cable 13 is a cable with self-resetting ability such as a shape memory alloy cable, and the two ends are respectively arranged on the lower surface of the upper connecting plate 11 of the horizontal device and the upper surface of the lower connecting plate 12 of the horizontal device. When the lower foundation 102 drives the horizontal seismic isolation bearing to perform horizontal vibration, the limit cable 13 has the functions of slowing down the movement of the horizontal seismic isolation bearing, restricting it from exceeding the action range of the seismic isolation bearing, and assisting its self-resetting.

[0055] Among them, the horizontal seismic isolation bearing is one of the rubber bearing 15 or the friction pendulum bearing 25, and the horizontal seismic isolation bearing is arranged at the exact center of the upper connecting plate 11 of the horizontal device and the lower connecting plate 12 of the horizontal device.

[0056] Those skilled in the art can understand that when the upper structure 101 transfers the weight to the vertical vibration isolation / shock device and then to the horizontal seismic isolation device and the lower foundation 102, the anti-tensile cable 3 of the vertical vibration isolation / shock device in the bearing state changes from the original length state when not bearing to the relaxed state when bearing. The anti-tensile sleeve of the horizontal seismic isolation device in the bearing state has a certain gap, or it can be set to have no gap after the bearing state.

[0057] Those skilled in the art can understand that when a horizontal earthquake comes, since the vertical vibration isolation / shock device is stably connected to the upper structure 101 through the connecting rib 201 of the upper connecting plate of the vertical device and the horizontal stiffness of the outer sleeve and the inner sleeve is very large, according to the series stiffness formula: Where K1 represents the horizontal stiffness of the vertical vibration isolation / shock device, and K2 represents the horizontal stiffness of the horizontal seismic isolation device. Due to the action of the outer sleeve and the inner sleeve, K1 is very large, while the horizontal stiffness K2 of the horizontal seismic isolation device itself is very small. At this time Therefore, when a horizontal earthquake causes the lower foundation 102 (the lower foundation 102 is stably connected to the lower connecting plate 12 of the horizontal device and the stiffening rib 14 through the connecting rib 202 of the lower connecting plate of the horizontal device) to transfer horizontal vibration to the lower connecting plate 12 of the horizontal device, driving the horizontal movement of the horizontal rubber bearing and the action of the limit cable, the vertical vibration isolation / shock device and the upper structure 101 will not be affected by the horizontal earthquake, thus achieving horizontal decoupling.

[0058] Those skilled in the art can understand that when vertical earthquakes or vibrations occur, since the superstructure 101, the vertical vibration isolation / shock absorption device, the horizontal vibration isolation device, and the lower foundation 102 are stably connected to each other, according to the series stiffness formula: where K3 represents the vertical stiffness of the vertical vibration isolation / shock absorption device, and K4 represents the vertical stiffness of the horizontal vibration isolation device. Since the upper connecting plate 11 and the lower connecting plate 12 of the horizontal device of the horizontal bearing device interact to form a tensile sleeve, regardless of compression or tension, the vertical stiffness K4 of the horizontal bearing device is very large at this time, while the vertical stiffness of the vertical vibration isolation / shock absorption device is very small due to the existence of the quasi-zero stiffness system, and its vertical stiffness is K3. At this time Therefore, when vertical earthquakes / vibrations cause the lower foundation 102 to transmit vertical vibrations / vibrations to the horizontal vibration isolation bearing, due to the action of the tensile sleeve of the horizontal vibration isolation bearing, it is hardly affected by vertical vibrations / vibrations. Then it is transmitted to the vertical vibration isolation / shock absorption device for vertical elastic deformation. Since K3 is much smaller than the stiffness of the superstructure 101, it is far from the natural vibration frequency of the superstructure 101 and plays a protective role for the superstructure 101, thus achieving vertical decoupling.

[0059] Those skilled in the art can understand that when three-dimensional earthquakes occur, the horizontal earthquakes will be blocked by the horizontal vibration isolation device to protect the superstructure 101 from the influence of horizontal earthquakes, and the vertical earthquakes will be blocked by the vertical vibration isolation / shock absorption device to protect the superstructure 101 from the influence of vertical earthquakes. The horizontal vibration isolation device and the vertical vibration isolation / shock absorption device are connected in parallel to form a tensile three-dimensional vibration isolation and shock absorption dual-control decoupling system with quasi-zero stiffness. They are decoupled from each other, so as to protect the superstructure 101 and block the vertical earthquakes / vibrations and horizontal vibrations during the propagation process.

[0060] Those skilled in the art can understand that the positive stiffness system can be in series or parallel; the negative stiffness disc spring 4 of the negative stiffness system can be in the forms of superposition, opposition, and combination; the vertical vibration isolation / shock absorption device and the horizontal vibration isolation device are connected in parallel, but there is no limit on the upper and lower positions; the tensile cable 3 is a cable such as a steel strand with small deformation and large tensile strength; the limit cable 13 is a cable such as a shape memory alloy cable with self-resetting ability; the horizontal vibration isolation bearing is not limited to the rubber bearing 15 and the friction pendulum bearing 25 in the embodiments.

[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-dimensional seismic vibration and pull-out double-control decoupling system with quasi-zero stiffness, characterized in that, It includes an upper structure (101), a vertical vibration isolation / shock absorption device, a horizontal vibration isolation device, and a lower foundation (102); one end of the vertical vibration isolation / shock absorption device is connected to the upper structure (101), the other end is connected to the horizontal vibration isolation device, and the horizontal vibration isolation device is connected to the lower foundation (102); the vertical vibration isolation / shock absorption device includes an upper connecting plate (1) of the vertical device, a tensile cable (3), a positive stiffness system, a negative stiffness system, and a lower connecting plate (2) of the vertical device; The upper connecting plate (1) of the vertical device is connected to the upper structure (101) through a connecting rib (201) of the upper connecting plate of the vertical device; the tensile cable (3) is arranged between the upper connecting plate (1) of the vertical device and the lower connecting plate (2) of the vertical device; the lower connecting plate (2) of the vertical device is connected to the horizontal vibration isolation device; The inner ring (301) of the outer sleeve at the upper connecting plate (1) of the vertical device and the outer ring (302) of the outer sleeve at the lower connecting plate (2) of the vertical device define an outer sleeve; the inner ring (9) of the inner sleeve at the upper connecting plate (1) of the vertical device and the outer ring (10) of the inner sleeve at the lower connecting plate (2) of the vertical device define an inner sleeve, and both the positive stiffness system and the negative stiffness system are outside the inner sleeve and inside the outer sleeve; The horizontal vibration isolation device includes an upper connecting plate (11) of the horizontal device, a limiting cable (13), a horizontal vibration isolation bearing, and a lower connecting plate (12) of the horizontal device; the upper surface of the upper connecting plate (11) of the horizontal device contacts the upper sleeve cover plate of the lower connecting plate (12) of the horizontal device to form a tensile sleeve; The upper connecting plate (11) of the horizontal device is connected to the lower connecting plate (2) of the vertical device through a plate connecting bolt (303); the upper end of the limiting cable (13) is connected to the upper connecting plate (11) of the horizontal device; the lower end of the limiting cable (13) is connected to the lower connecting plate (12) of the horizontal device; the horizontal vibration isolation bearing is arranged exactly in the middle between the upper connecting plate (11) of the horizontal device and the lower connecting plate (12) of the horizontal device; the lower connecting plate (12) of the horizontal device is connected to the lower foundation (102) through a connecting rib (202) of the lower connecting plate of the horizontal device and is reinforced by a stiffening rib (14); The positive stiffness system is one of a positive stiffness vertical spring (18), a positive stiffness disc spring (17), and an annular spring (16), and the positive stiffness system is in a compressed state at any time after installation; the annular spring (16) includes a double-layer annular spring and a triple-layer annular spring; the triple-layer annular spring includes an outer ring (5), a middle ring (6), an inner ring (7), and an end ring (8); The negative stiffness system is a negative stiffness disc spring (4).

2. The anti-pull three-dimensional shock vibration double-control decoupling system with quasi-zero stiffness according to claim 1, characterized in that The tensile cable (3) is made of steel strand.

3. The anti-pull three-dimensional shock vibration double-control decoupling system with quasi-zero stiffness according to claim 1, characterized in that, The upper surface of the lower connecting plate (2) of the vertical device is provided with a groove for limiting the positive stiffness system.

4. The anti-pullout three-dimensional shock and vibration dual-control decoupling system with quasi-zero stiffness according to claim 1, characterized in that, The limiting cable (13) is made of a shape memory alloy cable and has a self-resetting ability.

5. The anti-pull three-dimensional vibration and shock dual-control decoupling system with quasi-zero stiffness according to claim 1, characterized in that, The horizontal vibration isolation bearing adopts a friction pendulum bearing (25).

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