Connecting structure with swing self-resetting function

Abstract

The invention discloses a connecting structure with a swing self-resetting function, and relates to the technical field of quakeproof structure systems with recoverable functions, and the connecting structure comprises an upper structure and a foundation; a support mounting layer is formed between the bottom of the upper structure and the top of the foundation; the support installation layer comprises a buttress fixed to the top face of the foundation, a vertical tension and compression elastic support is connected between the buttress and the bottom face of the upper structure, and the vertical tension and compression elastic support does not restrain horizontal lateral movement of the upper structure, only provides tension and compression bearing capacity and does not bear any shear bearing capacity in the horizontal direction. According to the connecting structure with the swing self-resetting function, different from a traditional horizontal shearing shock isolation principle, the upper structure generates rigid body rotation around the vertical tension and compression elastic support at the center, and the upper structure is allowed to integrally swing within the range allowed by the design; energy is absorbed and dispersed through deformation of the vertical tension and compression elastic support, residual displacement after an earthquake can be effectively controlled, and great economic significance and social value are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of recoverable functional earthquake-proof structural systems, and more particularly to a connection structure with a swing self-resetting function. Background Art

[0002] The recoverable earthquake-resistant structural system has been a research hotspot in the field of earthquake engineering in recent years. The design goal of this structural system is to enable the building to maintain an acceptable level of functionality when an earthquake occurs, and to restore its use function after the earthquake without the need for complex repairs or with only minor repairs. This design concept is based on improving the seismic resilience of urban buildings and infrastructure and reducing the economic losses and social impacts caused by earthquake disasters.

[0003] The current design concepts of building structures to cope with earthquakes mainly include: seismic toughness design, performance-based seismic design, seismic isolation and energy dissipation technology, seismic design of non-structural components, structural optimization design, etc. The development and application of these design concepts aim to improve the safety and functionality of building structures under earthquakes and reduce the losses caused by earthquake disasters. The rocking self-righting structure can effectively control the residual displacement after an earthquake and ensure the functionality and safety of the structure. Due to its easy repair and rapid construction, the rocking self-righting structure has great economic significance and social value. Due to the rocking effect, the ductility design requirements of the structure itself are reduced, which can save the cost of the structure. The rocking self-righting structure can be applied to different structural systems, such as rocking bridge piers, reinforced concrete frame structures, steel frame structures, shear wall structures, etc. Although the rocking self-righting structure has the advantages of significant seismic resistance and rapid recovery after an earthquake, it also faces some challenges and problems in practical applications. The design of the rocking self-righting structure needs to consider many factors, including the stability, strength, and behavior of the structure under different earthquake intensities, which increases the complexity of the design; secondly, in order to ensure that the structure can self-right after rocking, special materials and technologies are usually required, such as post-tensioned prestressed tendons, which may increase the difficulty and cost of construction.

[0004] In summary, it is an urgent problem to be solved by technical personnel in this field to improve the seismic toughness and recovery capacity of building structures through scientific research and technological innovation, and to provide a structure with simple design, which can sway stably during earthquakes and has small residual deformation after earthquakes. Summary of the invention

[0005] In view of this, the present invention provides a connection structure with a rocking self-resetting function, which reduces the damage to the structure under a strong earthquake, and the residual deformation of the structure after the earthquake is small, which is conducive to quickly restoring the use function of the structure.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A connection structure with a swing self-resetting function, comprising: an upper structure and a foundation; a support installation layer is formed between the bottom of the upper structure and the top of the foundation;

[0008] The support installation layer includes a pier fixed on the top surface of the foundation, and a vertical tension and compression elastic support is connected between the pier and the bottom surface of the superstructure. The vertical tension and compression elastic support does not restrict the horizontal lateral displacement of the superstructure, only provides tension and compression bearing capacity, and does not bear any shear bearing capacity in the horizontal direction.

[0009] Through the above technical solution, the present invention proposes a connection structure with a rocking self-resetting function, which is different from the traditional horizontal shear isolation principle. The upper structure produces a rigid body rotation around the vertical tension and compression elastic support at the center, allowing the upper structure to rock as a whole within the design range, and absorb and disperse energy through the deformation of the vertical tension and compression elastic support. Due to the strong structural stability and strong self-resetting ability, it can effectively control the residual displacement after an earthquake, and has great economic significance and social value.

[0010] Preferably, in the above-mentioned connection structure with a swing self-resetting function, the number of the vertical tension and compression elastic bearings is multiple, and they are arranged around the edge of the bearing installation layer. The surrounding arrangement of multiple bearings can evenly disperse the load of the upper structure and improve the stability of the overall structure. Under the action of an earthquake, multiple bearings can work together to better absorb and disperse seismic energy and reduce the vibration of the structure. Even if some bearings fail, other bearings can continue to work to ensure the safety of the structure.

[0011] Preferably, in the above-mentioned connection structure with a rocking self-resetting function, the number of the vertical tension and compression elastic supports is multiple, and the multiple vertical tension and compression elastic supports are arranged around the edge of the support installation layer and arranged at the center of the support installation layer. The support arrangement at the center and the edge can disperse the load more evenly, improve the stability and seismic performance of the structure. The central support can bear part of the vertical load, reduce the burden of the edge support, and optimize the overall load distribution.

[0012] Preferably, in the above-mentioned connection structure with a rocking self-resetting function, the vertical tension-compression elastic bearing is one or more of a spiral tension-compression bearing, a disc spring bearing, a thick rubber bearing and an air spring bearing. According to different engineering requirements and environmental conditions, the most suitable bearing type can be selected. Different types of bearings have different performance characteristics, and their combined use can optimize the overall performance and improve the seismic resistance and shock absorption effects of the structure. Multiple bearing types can adapt to different deformation requirements to ensure effective operation under various working conditions.

[0013] Preferably, in the above-mentioned connection structure with a swing self-reset function, the vertical tension and compression elastic support has a limit device. The limit device can prevent the support from excessive deformation under extreme conditions and protect the structure from damage. When the deformation reaches the limit value, the limit device can significantly increase the stiffness of the support and reduce further deformation. Ensure the safety of the structure under extreme conditions such as earthquakes and reduce the workload of post-earthquake repair.

[0014] Preferably, in the above-mentioned connection structure with a swing self-resetting function, the horizontal lateral displacement caused by the rigid body rotation displacement of the upper structure under the action of an earthquake is not less than 30% of the overall horizontal lateral displacement of the upper structure. Ensure that the upper structure has sufficient rigid body rotation displacement to absorb and disperse earthquake energy through swinging and reduce structural damage. The rigid body rotation displacement accounts for a certain proportion of the overall horizontal lateral displacement, which can effectively reduce the vibration amplitude of the structure under the action of an earthquake. Provide clear performance indicators for structural design to ensure the overall performance of the structure under the action of an earthquake.

[0015] Preferably, in the above-mentioned connection structure with a swing self-resetting function, the upper structure is a cylindrical special structure. The cylindrical special structure has greater rigidity and stability, and is suitable for storage facilities that require high rigidity and large capacity. The cylindrical structure has good integrity and seismic resistance under earthquake action, and the seismic resistance can be further improved by combining with vertical tension and compression elastic bearings. The design of the cylindrical structure can reduce the use of materials, reduce the cost of the structure, and improve the stability and safety of the structure.

[0016] Preferably, in the above-mentioned connection structure with a swing self-resetting function, the foundation is a cast-in-place reinforced concrete foundation composed of a cap, a ring beam and a column. The cast-in-place reinforced concrete foundation has high strength and rigidity, can effectively support the superstructure, and improve the stability of the overall structure. The combination of the cap, the ring beam and the column can evenly disperse the load of the superstructure, reduce local stress concentration, and improve the bearing capacity of the foundation. The cast-in-place foundation can work in coordination with the superstructure to better absorb and disperse seismic energy and reduce the vibration of the structure.

[0017] Preferably, in the above-mentioned connection structure with a rocking self-resetting function, a three-dimensional vibration isolation / seismic support is provided at the bottom of the column. The three-dimensional vibration isolation / seismic support can provide vibration isolation functions in both the horizontal and vertical directions, effectively reducing vibrations under multi-dimensional earthquakes. Through multi-dimensional vibration isolation, the vibration amplitude of the structure under earthquakes can be significantly reduced, and the seismic performance of the structure can be improved. The three-dimensional vibration isolation / seismic support can work in conjunction with the vertical tension and compression elastic support to further optimize the seismic resistance and shock absorption performance of the structure.

[0018] Preferably, in the above-mentioned connection structure with a swing self-resetting function, the support mounting layer is also provided with an energy dissipation and shock absorption device. The energy dissipation and shock absorption device can further absorb and dissipate earthquake energy and reduce the vibration amplitude of the structure. Working in conjunction with the vertical tension and compression elastic bearing, the vibration of the structure can be more effectively controlled to improve the overall seismic performance. The provision of the energy dissipation and shock absorption device can further optimize the seismic design of the structure, reduce the workload of post-earthquake repair, and improve the economic efficiency and social value of the structure.

[0019] It can be known from the above technical solutions that, compared with the prior art, the present invention discloses a connection structure with a rocking self-resetting function. Different from the traditional horizontal shear isolation principle, the upper structure produces a rigid body rotation around the vertical tension and compression elastic support at the center, allowing the upper structure to rock as a whole within the range allowed by the design, and absorb and disperse energy through the deformation and energy dissipation device of the vertical tension and compression elastic support. This structural system is particularly suitable for structures with greater rigidity because it can adapt to the deformation requirements of the structure under extreme loads while reducing dependence on the ductility design of general building structures. This structural system can effectively combine earthquake resistance and shock absorption technologies, provide new shock absorption design ideas for reducing damage and destruction under strong earthquakes, and is innovative and practical. Due to the strong structural stability and strong self-resetting ability, the residual displacement after an earthquake can be effectively controlled, which has great economic significance and social value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 The accompanying drawing is a schematic structural diagram of a connection structure with a swing self-resetting function provided by the present invention;

[0022] Figure 2 The accompanying drawing is a schematic structural diagram of the support installation layer provided by the present invention;

[0023] Figure 3 The accompanying drawing is a top view of a connection structure with a swing self-resetting function provided by the present invention;

[0024] Figure 4 The attached drawing is an abaqus finite element analysis result diagram of the reaction force and deformation of the vertical tension and compression elastic support of the connection structure with the swing self-resetting function provided by the present invention;

[0025] Figure 5The attached figure is a deformation diagram of the abaqus finite element model of the connection structure with the swing self-resetting function provided by the present invention.

[0026] in:

[0027] 1-superstructure; 2-support installation layer; 21-pier; 3-foundation; 31-cap pedestal; 32-ring beam; 33-column; 4-vertical tension and compression elastic support. DETAILED DESCRIPTION

[0028] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0029] See attached Figure 1 To Attachment Figure 2 The embodiment of the present invention discloses a connection structure with a swing self-resetting function, comprising: an upper structure 1 and a foundation 3; a support installation layer 2 is formed between the bottom of the upper structure 1 and the top of the foundation 3;

[0030] The support installation layer 2 includes a pier 21 fixed on the top surface of the foundation 3, and a vertical tension and compression elastic support 4 is connected between the pier 21 and the bottom surface of the superstructure 1. The vertical tension and compression elastic support 4 does not restrict the horizontal lateral displacement of the superstructure 1, only provides tension and compression bearing capacity, and does not bear any shear bearing capacity in the horizontal direction.

[0031] In this embodiment, the superstructure 1 can be designed as a traditional building structure including components such as columns, beams, and walls, or a specific structure composed of vertical compression and bending components, such as used in water towers, signal towers, power towers, and industrial and military buildings.

[0032] When the upper structure 1 is a concrete structure, the side walls can be made of steel or fiber-reinforced concrete, or prestress should be applied in the height direction of the side walls, and prestress should be applied in the circumferential direction to improve the rigidity of the upper structure 1.

[0033] See attached Figure 3 There are multiple vertical tensile and compressive elastic supports 4, which are arranged around the edge of the support mounting layer 2.

[0034] In other embodiments, there are multiple vertical tension and compression elastic supports 4 , and the multiple vertical tension and compression elastic supports 4 are arranged around the edge of the support mounting layer 2 and at the center of the support mounting layer 2 .

[0035] The stiffness of the vertical tension and compression elastic support 4 at the center of the support installation layer 2 is appropriately increased according to the number and stiffness of the outer vertical tension and compression elastic supports 4, and is the same as the stiffness of the outer vertical tension and compression elastic supports 4 around the center, so that the upper structure 1 is initially in a horizontal state.

[0036] In order to further optimize the above technical solution, the vertical tension and compression elastic support 4 is one or more of a spiral tension and compression support, a disc spring support, a thick rubber support and an air spring support.

[0037] Specific:

[0038] A spiral tension-compression bearing is a bearing that realizes tension and compression functions through a spiral spring. It is usually composed of an upper steel seat plate, a spiral spring, a lower steel seat plate, etc. The spiral spring can produce a large deformation when subjected to force, thereby providing the required tension and compression bearing capacity. This type of bearing is suitable for structures that require a large deformation capacity, such as bridges and high-rise buildings. For example, CN104249767B, a spiral tension-compression bearing and its application.

[0039] Disc spring bearing is a bearing made of multiple disc springs stacked together. Disc spring is named because of its bowl-like appearance, and is referred to as disc spring. It has the following characteristics: High stiffness: It can withstand large loads with small deformation, and is suitable for occasions with small axial space requirements. Variable stiffness characteristics: It has a wide range of nonlinear characteristics, and the stiffness can be adjusted as needed. Convenient combination and use: The spring characteristics can be adjusted through different combinations (such as matching and stacking). Long service life: The material is usually high carbon steel or spring steel, and has high fatigue limit and impact toughness after heat treatment. Such as CN118422742A, a disc spring vertical seismic isolation bearing.

[0040] Thick-meat rubber bearing is a bearing made of multiple layers of rubber and steel plates alternately stacked together. It has the following characteristics: Low vertical stiffness: It can effectively reduce the vertical vibration transmitted from the ground to the building. Horizontal flexibility: Through the flexible characteristics of rubber, the natural vibration period of the structure is extended and the seismic response is reduced. Energy dissipation capacity: Rubber materials can absorb and dissipate energy during deformation, reducing the transmission of seismic energy. For example, CN104249767B, a thick-meat rubber seismic isolation bearing.

[0041] An air spring bearing is a bearing that uses the elastic effect of compressed air to achieve the bearing function. It usually consists of a retractable closed container (airbag) and a related control system. Air spring bearings have the following characteristics: Low stiffness: It can provide lower vertical stiffness and adapt to larger deformations. Adjustability: By adjusting the internal pressure, the bearing capacity of the bearing can be changed. Multi-purpose: It is widely used in self-adjusting air suspension systems for commercial vehicles, buses, rail vehicles, machinery and equipment, and building bases. Such as CN119085466A, an air spring-friction multi-dimensional seismic isolation bearing.

[0042] These vertical tension and compression elastic bearings have their own characteristics and are suitable for different engineering needs. Spiral tension and compression bearings are suitable for structures that require large deformation capacity; disc spring bearings are suitable for places with high stiffness requirements and limited space; thick rubber bearings are suitable for structures that need to reduce vertical vibration; air spring bearings are suitable for places that require low stiffness and adjustability. The common feature of these bearings is that they can absorb and disperse energy through their own deformation under earthquakes or other dynamic loads, thereby protecting the upper structure.

[0043] In order to further optimize the above technical solution, the vertical tension and compression elastic support 4 has a limit device. When the tension deformation or compression deformation of the support reaches the design limit, the tension stiffness or compression stiffness of the support will increase significantly, thereby reducing the tension and compression deformation of the support.

[0044] Limit devices can take many forms. Here are some common limit device designs:

[0045] High damping rubber block: When the support reaches the preset deformation limit, the high damping rubber block begins to bear force, absorbing energy through the deformation of the rubber, while increasing stiffness and limiting further deformation. The rubber block can also provide a certain self-reset function.

[0046] Limit bolts: Under normal loads or minor earthquakes, the limit bolts keep the support fixed. When the earthquake force is large and exceeds the shear resistance of the limit bolts, the limit bolts are damaged and the support can slide to play the seismic isolation function. The limit bolts adopt a modular design and can be easily replaced after the earthquake.

[0047] Connecting rod limiter: When the movable direction of the support body or the limit stopper fails, the steel connecting rod has a certain free sliding space in the limit cavity of the connecting rod limiter. When the displacement of the steel connecting rod exceeds the allowable value of the cavity of the connecting rod limiter, the connecting rod limiter contacts the steel connecting rod, driving the high damping rubber block to deform under tension or compression, and play a damping energy dissipation role.

[0048] Additional support base basin: When the tension and compression degree of the rubber continues to increase, the side steel plates of the additional support base basin limit the further increase of displacement, achieving the effect of limiting and preventing the beam from falling.

[0049] C-type limit steel plate and H-type steel plate: The C-type limit steel plate is fixed at the end of the first precast concrete beam and the H-type steel plate is fixed at the end of the second precast concrete beam. The vertical displacement of the beam is limited by the cooperation of the C-type limit steel plate and the H-type steel plate to ensure the stability of the structure.

[0050] In order to further optimize the above technical solution, the horizontal lateral displacement caused by the rigid body rotation displacement of the superstructure 1 under the action of an earthquake is not less than 30% of the overall horizontal lateral displacement of the superstructure 1, and is generally preferably 30% to 80%.

[0051] It should be noted that "horizontal lateral displacement caused by rigid body rotation displacement" refers to the horizontal displacement of the structure caused by the rotation of the upper structure as a whole (rigid body) around a certain point or axis under the action of an earthquake. This displacement is caused by the rotation of the structure as a whole rather than by the deformation inside the structure. For example, under the action of an earthquake, a building rotates as a whole around a certain point at its bottom, causing the top of the building to displace horizontally. This displacement is the horizontal lateral displacement caused by the rigid body rotation displacement.

[0052] "Overall horizontal displacement of the superstructure" refers to the total horizontal displacement of the superstructure under the action of an earthquake. This displacement includes the displacement caused by the internal deformation of the structure (such as the bending deformation of beams and columns) and the overall rotation of the structure (rigid body rotation). The overall horizontal displacement is the total response of the structure in the horizontal direction, reflecting the overall deformation of the structure under the action of an earthquake.

[0053] Therefore, under the action of an earthquake, the horizontal displacement of the superstructure can be divided into two parts:

[0054] Horizontal lateral displacement caused by rigid body rotation displacement: This is the horizontal displacement caused by the rotation of the entire structure around a certain point or axis.

[0055] Horizontal displacement caused by internal deformation: This is the horizontal displacement caused by the deformation of internal components of the structure (such as beams and columns).

[0056] Under the action of an earthquake, the horizontal lateral displacement caused by the overall rotation of the structure should account for a certain proportion (at least 30%) of the total horizontal lateral displacement to ensure that the structure has sufficient swaying capacity to absorb and disperse seismic energy and reduce structural damage and destruction.

[0057] Assume that a building has a total horizontal displacement of 100 mm at the top under the action of an earthquake. If the horizontal displacement caused by the rigid body rotation displacement is 40 mm, then this part of the displacement accounts for 40% of the total horizontal displacement, meeting the above requirements. If the horizontal displacement caused by the rigid body rotation displacement is only 20 mm, then this part of the displacement only accounts for 20% of the total horizontal displacement, which does not meet the requirements, which may mean that the sway capacity of the structure is insufficient and cannot effectively absorb earthquake energy.

[0058] In order to further optimize the above technical solution, the superstructure 1 is a cylindrical special structure, such as silos, liquefied natural gas (LNG) storage tanks, oil storage tanks, granaries and other large storage facilities, as well as other industrial and military buildings that require cylindrical support structures.

[0059] In order to further optimize the above technical solution, the foundation 3 is an integrally cast reinforced concrete foundation consisting of a cap 31 , a ring beam 32 and a column 33 .

[0060] In order to further optimize the above technical solution, a three-dimensional vibration isolation / seismic support is set at the bottom of the column 33, so as to reduce the seismic response of the upper structure by horizontal seismic isolation and realize dual vibration control.

[0061] A three-dimensional vibration isolation / seismic bearing is a bearing that combines horizontal isolation and vertical isolation functions, and is designed to effectively reduce the vibration of the structure under multi-dimensional earthquakes. This bearing decouples vertical isolation from horizontal isolation through reasonable structural design, thereby providing effective vibration isolation performance in both vertical and horizontal directions. For example: CN104249767B, rubber-double friction pendulum three-dimensional seismic isolation (vibration) bearing, or CN119085466A, air spring-friction pendulum system (FPS) three-dimensional seismic isolation bearing.

[0062] In order to further optimize the above technical solution, the support installation layer 2 is also provided with an energy dissipation and damping device, which dissipates energy through vertical tensile and compressive deformation. The types of the energy dissipation and damping device include viscous dampers, viscoelastic dampers, and the like.

[0063] Specifically, the viscous damper is a velocity-type damper that dissipates seismic energy through the interaction between the viscous medium (such as silicone oil) in the damper and the damper structural components. Its working principle is to use the viscosity of the liquid to provide damping to dissipate vibration energy. It is mainly composed of a cylinder, a piston, a viscous fluid, a guide rod, etc. When the structure is deformed, the cylinder and the piston move relative to each other, and the damping force is generated by forcing the viscous fluid to flow from the throttle hole and the gap, thereby converting kinetic energy into heat energy to achieve the purpose of vibration reduction.

[0064] The viscoelastic damper is a viscous damping device with stiffness. It mainly relies on the hysteresis energy dissipation characteristics of the viscoelastic material to increase the damping of the structure and reduce the dynamic response of the structure. Its mechanical model includes a model that applies the fractional differential constitutive relationship and a model that combines the spring and the damper. The damping force is related to the velocity and displacement. The viscoelastic damper is made of viscoelastic damping materials and constrained steel plates alternately stacked and bonded. In addition to the viscoelastic damping material, there are also constrained steel plates and adhesive layers. The viscoelastic damping material is the main part of the energy dissipation, while the constrained steel plate and the adhesive layer can hardly dissipate energy, so the loss factor of the viscoelastic damper is smaller than that of the viscoelastic material.

[0065] This embodiment enables the upper structure 1 to produce a rigid body rotation around the vertical tension and compression elastic support 4 at the center, allowing the upper structure 1 to swing as a whole within the range allowed by the design, and absorbing and dissipating energy through the deformation of the vertical tension and compression elastic support 4 and the energy dissipation device.

[0066] See attached Figure 4 and attached Figure 5 In this embodiment, a finite element model was established and analyzed using abaqus finite element software, and the model parameters are as follows:

[0067] The tank body is 7m high and 6m wide, with a wall thickness of 100mm and a bottom thickness of 200mm. The ring beam and special-shaped beam are both 200×300mm rectangular cross-section reinforced concrete beams, the longitudinal reinforcement is HRB400, the stirrups are HRB335, the columns are 300×300mm rectangular cross-section reinforced concrete columns, the spring stiffness at the center is 10.8kN / mm, and the spring stiffness at the outer ring is 1.26kN / mm.

[0068] The analysis results show that the present invention can achieve the predetermined swing self-resetting effect and effectively reduce the seismic response of the structure.

[0069] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connection structure with a swing self-resetting function, comprising: A superstructure (1) and a foundation (3); characterized in that a support installation layer (2) is formed between the bottom of the superstructure (1) and the top of the foundation (3); The support installation layer (2) includes a pier (21) fixed to the top surface of the foundation (3), and a vertical tension-compression elastic support (4) is connected between the pier (21) and the bottom surface of the upper structure (1). The vertical tension-compression elastic support (4) does not constrain the horizontal lateral displacement of the upper structure (1), only provides tension-compression bearing capacity, and does not bear any shear bearing capacity in the horizontal direction.

2. A connection structure with a swing self-resetting function according to claim 1, characterized in that: The vertical tension and compression elastic supports (4) are multiple in number and are arranged around the edge of the support mounting layer (2).

3. A connection structure with a swing self-resetting function according to claim 1 or 2, characterized in that: The number of the vertical tension and compression elastic supports (4) is multiple, and the multiple vertical tension and compression elastic supports (4) are arranged around the edge of the support installation layer (2) and arranged at the center of the support installation layer (2).

4. A connection structure with a swing self-resetting function according to claim 1, characterized in that: The vertical tension-compression elastic support (4) is one or more of a spiral tension-compression support, a disc spring support, a thick-mesh rubber support and an air spring support.

5. The connection structure with a swing self-resetting function according to claim 1, characterized in that: The vertical tension-compression elastic support (4) has a limiting device.

6. A connection structure with a swing self-resetting function according to claim 1, characterized in that: The horizontal lateral displacement caused by the rigid body rotation displacement of the upper structure (1) under the action of an earthquake is not less than 30% of the overall horizontal lateral displacement of the upper structure (1).

7. The connection structure with a swing self-resetting function according to claim 1, characterized in that: The upper structure (1) is a special cylindrical structure.

8. The connection structure with a swing self-resetting function according to claim 1, characterized in that: The foundation (3) is a cast-in-place reinforced concrete foundation consisting of a cap (31), a ring beam (32) and a column (33).

9. A connection structure with a swing self-resetting function according to claim 8, characterized in that: A three-dimensional vibration isolation / shock support is arranged at the bottom of the column (33).

10. A connection structure with a swing self-resetting function according to claim 1, characterized in that: The support installation layer (2) is also provided with an energy dissipation and shock absorption device.

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