A connection structure with three-dimensional shock absorption and energy absorption buffer

Abstract

The present invention discloses a connection structure with three-dimensional shock absorption and energy absorption buffering. When an earthquake occurs, the upper structure is restricted by a rotating connection device so that it only rotates as a rigid body around the rotating connection device, thereby causing the upper structure to swing as a whole within the range allowed by the design. Then, the energy is absorbed and dispersed through the deformation and energy dissipation of the vertical connection device, thereby reducing the impact of the earthquake on the upper structure. The purpose of earthquake resistance and shock absorption is achieved through the combination of the above devices, and the damage and destruction to the upper structure under the action of strong earthquakes is effectively reduced. At the same time, since the connection structure has a strong self-resetting ability, it can effectively control the residual displacement of the structure itself after the earthquake, avoid further damage to the upper structure, and is also conducive to the repair of the structure. After the earthquake resistance of the upper structure is strengthened by the connection structure, the requirements can also be lowered when designing the earthquake resistance performance of the upper structure, thereby having higher economic value.

Description

Technical Field

[0001] The present invention relates to the technical field of recoverable functional shockproof structures, and in particular to a connection structure with three-dimensional shock absorption and energy absorption buffering. Background Art

[0002] Current design concepts for building structures to cope with earthquakes mainly include: seismic resilience design, performance-based seismic design, seismic isolation and energy dissipation and shock absorption technology, seismic design of non-structural components and structural optimization design. The development and application of the above design concepts aim to improve the safety and functionality of building structures under earthquakes and reduce the losses caused by earthquake disasters.

[0003] Recoverable earthquake-resistant structural systems have been a research hotspot in earthquake engineering in recent years. The design goal of these structural systems is to ensure that buildings maintain acceptable levels of functionality during an earthquake and can be restored to their original function after an earthquake with minimal or no extensive repairs. The goal is to improve the seismic resilience of urban buildings and infrastructure, and to reduce the economic losses and social impacts of earthquake disasters.

[0004] As a restorable earthquake-proof structural system, the rocking self-righting structure can effectively control the residual displacement after an earthquake and ensure the functionality and safety of the structure. Moreover, due to the small displacement, the subsequent repair difficulty is reduced, and the construction is relatively fast. Similarly, due to the shock absorption effect brought about by the rocking action, 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. Due to its structural characteristics, the rocking self-righting structure has great economic significance and social value when applied to the above structures. Although the rocking self-righting structure has significant seismic performance and the advantages of 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 multiple 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-reset after rocking, special materials and technologies are usually required, such as post-tensioned prestressed tendons, which may increase the difficulty and cost of construction. The present invention provides a connection structure with three-dimensional shock absorption and energy absorption buffering to solve the above problems. Summary of the Invention

[0005] The present invention provides a connection structure with three-dimensional shock absorption and energy absorption buffering, which reduces the damage of the structure under strong earthquakes through a swing mechanism, and the residual deformation of the structure after the earthquake is small, which is conducive to the rapid restoration of the structure's usability.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A connection structure with three-dimensional shock absorption and energy absorption and buffering, comprising an upper structure, a connection layer, and a lower foundation, wherein the connection layer is located between the upper structure and the lower foundation, and the connection structure is located in the connection layer. The connection structure comprises a rotation connection device and a vertical connection device, wherein the rotation connection device is located at the center of the upper structure, the top of the rotation connection device is connected to the upper structure, and the bottom of the rotation connection device is arranged on the lower foundation, and the vertical connection device is located at the periphery of the rotation connection device, and the upper and lower parts of the vertical connection device are connected to the upper structure and the lower foundation respectively;

[0008] The rotating connection device allows the upper structure to rotate and displace, while limiting the linear displacement of the upper structure in the horizontal direction, so that the upper structure produces a rigid body rotation around the rotating connection device;

[0009] The vertical connection device does not constrain the horizontal lateral displacement of the upper structure, only provides tensile and compressive bearing capacity, and does not bear the shear bearing capacity in the horizontal direction.

[0010] Furthermore, the horizontal lateral displacement caused by the rigid body rotation displacement of the superstructure is not less than 30% of the overall horizontal lateral displacement of the superstructure.

[0011] Furthermore, the vertical connection device includes a vertical tensile and compressive elastic support and a pier. When the vertical tensile and compressive elastic support is arranged at the upper part of the connection layer, the top of the vertical connection device is directly connected to the upper structure, and the bottom thereof is connected to the lower foundation through the pier; when the vertical tensile and compressive elastic support is arranged at the middle part of the connection layer, the top of the vertical connection device is connected to the upper structure through the pier, and the bottom thereof is connected to the lower foundation through the pier; when the vertical tensile and compressive elastic support is arranged at the lower part of the connection layer, the top of the vertical connection device is connected to the upper structure through the pier, and the bottom thereof is directly connected to the lower foundation.

[0012] Furthermore, the rotating connection device includes a rotating box and a rotating seat, the rotating box is arranged on the lower foundation, the rotating seat is arranged at the center of the bottom surface of the upper structure and is located in the rotating box, and the rotating seat rotates around the axis in the rotating box.

[0013] Furthermore, the vertical connection devices are evenly spaced within the connection layer and arranged in a circular shape, and the rotating connection device is located at the center of the circle.

[0014] Furthermore, the upper structure is a cylindrical structure, including a cylinder wall and a cylinder bottom, and the tops of the rotating connecting device and the vertical connecting device are connected to the cylinder bottom.

[0015] Furthermore, the lower foundation includes a foundation and support piles, and the foundation is set on the ground through the support piles.

[0016] Furthermore, a limiting device is provided on the vertical tension and compression elastic support.

[0017] Furthermore, it also includes an energy dissipation and shock absorption device, which is located in the connecting layer. The energy dissipation and shock absorption device is arranged at intervals on the lower foundation and is connected to the upper structure.

[0018] Preferably, the vertical tension-compression elastic support is a spiral tension-compression support, a disc spring support, a thick rubber support and / or an air spring support.

[0019] The beneficial effects of the present invention are as follows:

[0020] When an earthquake occurs, the upper structure is restricted by the rotating connection device so that it only rotates as a rigid body around the rotating connection device, thereby causing the upper structure to swing as a whole within the range allowed by the design. Then, the deformation and energy dissipation of the vertical connection device are used to absorb and disperse energy, thereby reducing the impact of the earthquake on the upper structure. The combination of the above devices achieves the purpose of earthquake resistance and shock absorption, and effectively reduces the damage and destruction to the upper structure under the action of strong earthquakes. At the same time, since the connection structure has a strong self-resetting ability, it can effectively control the residual displacement of the structure itself after the earthquake, avoid further damage to the upper structure, and is also conducive to the repair of the structure. After the seismic capacity of the upper structure is strengthened by the connection structure, the requirements can also be lowered when designing the seismic performance of the upper structure, thereby having higher economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the self-resetting swing state of the present invention;

[0023] Figure 3 It is a top view schematic diagram of the connection state of the connection structure of the present invention;

[0024] Figure 4 It is a schematic side view of the connection structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection between the upper structure and the vertical connection device of the present invention.

[0026] Figure numerals: 1. upper structure; 2. connecting structure; 21. rotating connecting device; 211. rotating box; 212. rotating seat; 22. vertical connecting device; 221. vertical tension and compression elastic support; 222. pier; 3. lower foundation; 31. pedestal; 32. supporting pile. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 cannot be understood as limiting the present invention.

[0029] like Figure 1 、 2 As shown in Figures 3 and 4, a specific embodiment of the present invention is applied to a cylindrical structure of a steel frame structure, a connection structure with three-dimensional shock absorption and energy absorption buffering, including an upper structure 1, a connection layer, and a lower foundation 3. The upper structure 1 is specifically a large cylindrical storage facility such as a silo, liquefied natural gas (LNG) storage tank, oil storage tank, or granary. The lower foundation 3 is a pile foundation, which serves as the installation base for the upper structure 1 and the connection layer. The connection layer is located between the upper structure 1 and the lower foundation 3, and the connection structure 2 is located in the connection layer. The connection structure 2 includes a rotating connection device 21 and a vertical connection device 22. The rotating connection device 21 is located at the center of the upper structure 1. The top of the rotating connection device 21 is connected to the upper structure 1, and its bottom is set on the lower foundation 3. The vertical connection device 22 is located on the periphery of the rotating connection device 21, and its upper and lower parts are connected to the upper structure 1 and the lower foundation 3 respectively.

[0030] like Figure 1 、 2As shown in Figures 3 and 4, the vertical connection device 22 is arranged in a circle, and the rotating connection device 21 is located at the center of the circle. When an earthquake occurs, the vertical connection device 22 does not constrain the horizontal lateral displacement of the upper structure, and only provides vertical tensile and compressive bearing capacity, and does not bear any shear bearing capacity in the horizontal direction. The rotating connection device 21 restricts the upper structure and only allows it to produce rotational displacement, while limiting the linear displacement of the upper structure in the horizontal direction, so that the upper structure produces a rigid body rotation around the rotating connection device 21 under the action of the earthquake force, causing the upper structure to sway under the action of a strong earthquake. Through the joint action of the rotating connection device 21 and the vertical connection device 22, when an earthquake occurs, the upper structure 1 produces a rigid body rotation around the rotating connection device 21, and the upper structure 1 is allowed to swing as a whole within the design allowable range. The deformation of the vertical connection device 22 and the energy dissipation device absorb and disperse energy, thereby reducing earthquake damage and destruction to the upper structure 1 when an earthquake occurs. In addition, the upper structure 1 can stably reset itself after swinging, effectively controlling the residual displacement of the structure after the earthquake, avoiding further expansion of the structural displacement, and reducing the cost of post-earthquake repair.

[0031] This connection structure is suitable for structures with greater rigidity. Structures with greater rigidity can adapt to deformation requirements under extreme loads, and can achieve seismic and shock-absorbing effects under the joint action of the rotating connection device 21 and the vertical connection device 22. Moreover, structures with greater rigidity can reduce dependence on structural ductility design.

[0032] Furthermore, within the constraints of the rotational connection device 21 and the vertical connection device 22, during an earthquake, the horizontal lateral displacement of the upper structure 1 caused by the rigid body rotation displacement under the action of the earthquake is no less than 30% of the overall horizontal lateral displacement of the upper structure 1. This ensures that the upper structure 1 can achieve a self-resetting rocking motion during an earthquake without causing structural collapse due to excessive displacement. During the specific configuration, the ratio is controlled between 30% and 80% by selecting the rotational connection device 21 and the vertical connection device 22, taking into account both earthquake resistance and structural stability.

[0033] like Figure 2 、 34, further, the vertical connection device 22 includes a vertical tension and compression elastic support 221 and a pier 222, and different structures are adopted according to the different setting positions of the vertical tension and compression elastic support 221; when the vertical tension and compression elastic support 221 is arranged at the upper part of the connection layer, the top of the vertical connection device 22 is directly connected to the upper structure 1, and the bottom thereof is connected to the lower foundation 3 through the pier 222; when the vertical tension and compression elastic support 221 is arranged at the middle part of the connection layer, the top of the vertical connection device 22 is connected to the upper structure 1 through the pier 222, and the bottom thereof is connected to the lower foundation 3 through the pier 222; when the vertical tension and compression elastic support 221 is arranged at the lower part of the connection layer, the top of the vertical connection device 22 is connected to the upper structure 1 through the pier 222, and the bottom thereof is directly connected to the lower foundation 3, and the vertical connection device 22 and the rotation connection device 21 are located at the same height.

[0034] like Figure 3 、 4 5, further, the rotating connection device 21 includes a rotating box 211 and a rotating seat 212, the rotating box 211 is arranged on the lower foundation 3, and the rotating seat 212 is arranged at the center of the bottom surface of the upper structure 1 and is located in the rotating box 211. When an earthquake occurs, the upper structure 1 drives the rotating seat 212 to rotate around the axis of the rotating box 211, and limits the upper structure 1 to make it rotate as a rigid body around the axis.

[0035] Furthermore, the vertical connection devices 22 are evenly spaced within the connection layer and arranged in a circular shape, and the rotating connection device 21 is located at the center of the circle.

[0036] Furthermore, the vertical connection device 22 is arranged in a centrally symmetrical manner, ensuring that the support effect provided by the vertical connection device 22 is uniform and stable.

[0037] Furthermore, the upper structure 1 is a cylindrical structure, including a cylinder wall and a cylinder bottom, and the tops of the rotating connection device 21 and the vertical connection device 22 are connected to the cylinder bottom.

[0038] like Figure 5 As shown, further, the upper structure 1 is a cylindrical steel frame structure or a cylindrical concrete structure, and the rigidity of the cylindrical upper structure is improved by setting supports and increasing the cross-sectional size; when the upper structure 1 is a cylindrical steel frame structure, its own rigidity is relatively large; when the upper structure 1 is a cylindrical concrete structure, the side wall is improved by adopting steel or fiber reinforced concrete materials, or applying prestress along the height direction in the side wall, applying prestress in the circumferential direction, etc.

[0039] Furthermore, the superstructure 1 may also be a traditional building structure comprising components such as columns, beams, and walls, or a specific structure composed of vertical compression-bending components, such as a water tower, a signal tower, a power line tower, and industrial and military buildings.

[0040] Furthermore, the lower foundation 3 includes a foundation 31 and support piles 32 , and the foundation 31 is set on the ground through the support piles 32 .

[0041] Furthermore, a limiting device is provided on the vertical tensile and compressive elastic support 221. By setting the limiting device, when the tensile deformation or compressive deformation of the vertical tensile and compressive elastic support 221 reaches the design limit, the tensile stiffness or compressive stiffness of the vertical tensile and compressive elastic support 221 will be significantly increased, thereby reducing the tensile and compressive deformation of the support.

[0042] Furthermore, it also includes an energy dissipation and shock absorption device 4, which is located in the connection layer, is spaced apart on the lower foundation 3, and is connected to the upper structure 1. The vertical tensile and compressive deformation of the energy dissipation and shock absorption device 4 achieves buffering and energy dissipation.

[0043] Preferably, the energy dissipation and vibration reduction device 4 includes a viscous damper and a viscoelastic damper.

[0044] Preferably, the vertical tension and compression elastic support 221 is a spiral tension and compression support, a disc spring support, a thick rubber support and / or an air spring support. During actual construction, multiple similar or different supports are selected for combined application according to the on-site working conditions.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

Claims

1. A connection structure with three-dimensional shock absorption and energy absorption buffering, characterized in that: The invention comprises an upper structure (1), a connecting layer and a lower foundation (3), wherein the connecting layer is located between the upper structure (1) and the lower foundation (3), the connecting structure (2) is located in the connecting layer, the connecting structure (2) comprises a rotating connecting device (21) and a vertical connecting device (22), the rotating connecting device (21) is located at the center of the upper structure (1), the top of the rotating connecting device (21) is connected to the upper structure (1), and the bottom of the rotating connecting device (21) is arranged on the lower foundation (3), and the vertical connecting device (22) is located on the periphery of the rotating connecting device (21), and the upper and lower parts thereof are connected to the upper structure (1) and the lower foundation (3) respectively; The rotating connection device (21) enables the upper structure (1) to perform rotational displacement, while limiting the linear displacement of the upper structure (1) in the horizontal direction, so that the upper structure (1) generates a rigid body rotation around the rotating connection device (21); The vertical connection device (22) does not constrain the horizontal lateral displacement of the upper structure (1), only provides tensile and compressive bearing capacity, and does not bear the shear bearing capacity in the horizontal direction; The vertical connection device (22) comprises a vertical tension-compression elastic support (221) and a pier (222). When the vertical tension-compression elastic support (221) is arranged at the upper part of the connection layer, the top of the vertical connection device (22) is directly connected to the upper structure (1), and the bottom thereof is connected to the lower foundation (3) through the pier (222); when the vertical tension-compression elastic support (221) is arranged at the middle part of the connection layer, the top of the vertical connection device (22) is connected to the upper structure (1) through the pier (222), and the bottom thereof is connected to the lower foundation (3) through the pier (222); when the vertical tension-compression elastic support (221) is arranged at the lower part of the connection layer, the top of the vertical connection device (22) is connected to the upper structure (1) through the pier (222), and the bottom thereof is directly connected to the lower foundation (3).

2. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: The horizontal lateral displacement caused by the rigid body rotation displacement of the upper structure (1) is not less than 30% of the overall horizontal lateral displacement of the upper structure (1).

3. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: The rotating connection device (21) comprises a rotating box (211) and a rotating seat (212), wherein the rotating box (211) is arranged on the lower foundation (3), and the rotating seat (212) is arranged at the center of the bottom surface of the upper structure (1) and is located in the rotating box (211), and the rotating seat (212) rotates around the center of the ball in the rotating box (211).

4. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: The vertical connection devices (22) are evenly spaced and arranged in a circular shape within the connection layer, and the rotating connection device (21) is located at the center of the circle.

5. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: The upper structure (1) is a cylindrical structure, comprising a cylinder wall and a cylinder bottom, and the tops of the rotating connection device (21) and the vertical connection device (22) are connected to the cylinder bottom.

6. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: The lower foundation (3) comprises a bearing platform (31) and supporting piles (32), and the bearing platform (31) is arranged on the ground via the supporting piles (32).

7. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: A limiting device is provided on the vertical tension-compression elastic support (221).

8. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: It also includes an energy dissipation and shock absorption device (4), which is located in the connection layer. The energy dissipation and shock absorption device (4) is arranged at intervals on the lower foundation (3) and is connected to the upper structure (1).

9. The connection structure with three-dimensional shock absorption and energy absorption according to claim 1 is characterized by: The vertical tension-compression elastic support (221) is a spiral tension-compression support, a disc spring support, a thick rubber support and / or an air spring support.

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