A connecting structure equipped with three-dimensional seismic damping and energy absorption buffer functions.

Abstract

This connection structure is equipped with three-dimensional seismic damping and energy absorption buffering functions. During an earthquake, the rotational connection device 21 restricts the superstructure 1 so that it can only rotate rigidly around the rotational connection device 21, causing the superstructure 1 to rock overall within the design tolerance range. Subsequently, the deformation and energy dissipation action of the vertical connection device 22 absorb and dissipate energy, reducing the impact of the earthquake on the superstructure 1. [Effects] The combination of the above devices achieves the objectives of earthquake resistance and vibration control, effectively reducing damage and destruction to the superstructure caused by strong earthquakes. Furthermore, because the connecting structure has a strong self-centering ability, it effectively suppresses residual displacement of the structure itself after an earthquake, preventing further destruction of the superstructure and contributing to structural repair. When the earthquake resistance capacity of the superstructure is strengthened by the connecting structure, the requirements in earthquake performance design are also reduced, further increasing economic value.

Description

Technical Field

[0001] The present invention relates to the technical field of an earthquake-proof structure capable of recovering functions, and specifically relates to a connection structure having three-dimensional seismic isolation functions and energy absorption and buffering functions.

Background Art

[0002] Current design concepts of building structures for dealing with earthquakes mainly include seismic resilience design, performance-based seismic design, seismic isolation and energy dissipation seismic technologies, seismic design of non-structural members, structural optimization design, etc. The development and application of these design concepts aim to improve the safety and functionality of building structures during earthquakes and reduce losses caused by earthquake disasters.

[0003] In recent years, earthquake-proof structure systems capable of recovering functions have become a research hotspot in the field of earthquake engineering. The design goal of this structure system is to maintain the functionality of a building at an acceptable level during an earthquake and enable the recovery of its service function without requiring complex repairs or only minor repairs after the earthquake. This aims to improve the seismic resilience of urban buildings and infrastructure and reduce the economic losses and social impacts caused by earthquake disasters.

[0004] Rocking-type self-centering structures, as seismic isolation structural systems capable of restoring function, effectively suppress residual displacement after earthquakes, ensuring the functionality and safety of the structure. Furthermore, because the displacement is small, subsequent repairs are easy and construction is rapid. Due to the seismic damping effect of the rocking action, the ductility design requirements of the structure itself are reduced, saving on structural costs. Rocking-type self-centering structures can be applied to various structural systems, including rocking bridge piers, reinforced concrete frame structures, steel structures, and shear wall structures. Due to its structural characteristics, rocking-type self-centering structures offer significant economic and social value when used in the aforementioned structures. While rocking-type self-centering structures have the major advantages of remarkable seismic resistance and rapid post-earthquake recovery, they face several challenges and problems in practical application. Designing rocking-type self-centering structures requires considering multiple factors, such as structural stability, strength, and behavior under various seismic intensities, which increases the complexity of the design. Furthermore, enabling a structure to self-center after rocking typically requires special materials and techniques such as post-tensioned, prestressed, and tendons, which can increase the difficulty and cost of construction. To solve the above problems, the present invention provides a connecting structure with three-dimensional seismic damping and energy absorption buffering functions. [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] The present invention provides a connecting structure equipped with three-dimensional seismic damping and energy absorption buffering functions, which contribute to the rapid restoration of the usable function of a structure by reducing structural damage caused by strong earthquakes and minimizing residual deformation of the structure after an earthquake through a rocking mechanism. [Means for solving the problem]

[0006] The technical solutions employed by the present invention to solve the above technical problems are as follows:

[0007] A connecting structure having three-dimensional seismic damping and energy absorption buffering functions, comprising a superstructure, a connecting layer, and a lower foundation, wherein the connecting layer is located between the superstructure and the lower foundation, and the connecting structure is located within the connecting layer, and the connecting structure comprises a rotating connecting device and a vertical connecting device, wherein the rotating connecting device is located at the center of the superstructure, its top is connected to the superstructure, and its bottom is provided on the lower foundation, and the vertical connecting device is located on the outer circumference of the rotating connecting device, its upper and lower parts being connected to the superstructure and the lower foundation, respectively. The rotary connection device rotates the superstructure, limits the linear displacement of the superstructure in the horizontal direction, and causes the superstructure to rotate rigidly around the rotary connection device. The aforementioned vertical connection device does not restrain the horizontal shift of the superstructure, provides only pressure load capacity, and does not impose shear load capacity in the horizontal direction.

[0008] Furthermore, the horizontal shift displacement caused by the rigid rotational displacement of the superstructure accounts for 30% or more of the total horizontal shift of the superstructure.

[0009] Furthermore, the vertical connection device includes a vertical tensile-compressive elastic base and a pier, wherein if the vertical tensile-compressive elastic base is located on the upper part of the connecting layer, the top of the vertical connection device is directly connected to the superstructure and the bottom is connected to the lower foundation via the pier; if the vertical tensile-compressive elastic base is located in the central part of the connecting layer, the top of the vertical connection device is connected to the superstructure via the pier and the bottom is connected to the lower foundation via the pier; and if the vertical tensile-compressive elastic base is located at the lower part of the connecting layer, the top of the vertical connection device is connected to the superstructure via the pier and the bottom is directly connected to the lower foundation.

[0010] Furthermore, the rotating connection device includes a rotating box and a rotating base, the rotating box being provided on the lower foundation, and the rotating base being provided at the center of the bottom surface of the superstructure and located within the rotating box, and the rotating base rotating within the rotating box about the center of a sphere.

[0011] Furthermore, the vertical connection devices are arranged in an annular pattern at equal intervals within the connection layer, and the rotary connection device is located at the center of the circle.

[0012] Furthermore, the upper structure is a cylindrical structure including a cylindrical wall and a cylindrical bottom, and the tops of the rotary connector and the vertical connector are connected to the cylindrical bottom.

[0013] Furthermore, the lower foundation includes a support base and support piles, the support base being supported in the ground by the support piles.

[0014] Furthermore, the vertical tensile and compressive elastic base is provided with a limiting device.

[0015] Furthermore, the system further includes an energy dissipation damping device, the energy dissipation damping device being located within the connecting layer, the energy dissipation damping device being spaced apart in the lower foundation, and connected to the superstructure.

[0016] Preferably, the vertical tensile-compressive elastic base is a helical tensile-compressive base, a disc spring base, a thick rubber base, and / or an air spring base. [Effects of the Invention]

[0017] The beneficial effects of the present invention are as follows:

[0018] During an earthquake, the superstructure is restricted by the rotary connection device so that only rigid rotation centered on the rotary connection device can occur, and the superstructure can rock as a whole within the design allowable range. Then, the energy is absorbed and dispersed by the deformation and energy dissipation effect of the vertical connection device, reducing the impact of the earthquake on the superstructure. The combination of the above devices achieves the purposes of earthquake resistance and seismic control, effectively reducing the damage and destruction of the superstructure caused by the action of strong earthquakes. In addition, since the connection structure has a strong self-centering ability, it can effectively suppress the residual displacement of the structure itself after an earthquake, avoid further destruction of the superstructure, and also contribute to the repair of the structure. When the seismic resistance ability of the superstructure is strengthened by the connection structure, the requirements in the seismic performance design of the superstructure are also reduced, and the economic value is further increased.

Brief Description of the Drawings

[0019] [Figure 1] It is a schematic diagram of the overall structure of the present invention. [Figure 2] It is a schematic diagram of the self-centering rocking state of the present invention. [Figure 3] It is a top view schematic diagram of the connection structure in the connection state of the present invention. [Figure 4] It is a side view schematic diagram of the connection structure of the present invention. [Figure 5] It is a schematic diagram of the connection between the superstructure and the vertical connection device of the present invention.

Embodiments for Carrying Out the Invention

[0020] Hereinafter, referring to the drawings of the specification, the technical solutions in the embodiments of the present invention will be clearly and completely described. However, it is clear that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present invention.

[0021] In the description of this invention, terms such as "center," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" refer to directions or positional relationships based on the directions or positional relationships shown in the drawings. These terms are merely used to facilitate and simplify the explanation of this invention and do not indicate or imply that the referred device or element has a specific direction, or must be composed of and operate in a specific direction. They should not be understood as limiting this invention.

[0022] As shown in Figures 1, 2, and 3, a specific embodiment of the present invention is applied to a cylindrical steel frame structure, and the connecting structure, which has three-dimensional seismic damping and energy absorption buffering functions, includes a superstructure 1, a connecting layer, and a lower foundation 3, wherein the superstructure 1 is specifically a large cylindrical storage facility such as a silo, liquefied natural gas (LNG) storage tank, oil storage tank, or grain warehouse, and the lower foundation 3 is a pile foundation that functions as the installation base for the superstructure 1 and the connecting layer. The connecting layer is located between the superstructure 1 and the lower foundation 3, and the connecting structure 2 is located within the connecting layer. The connecting structure 2 includes a rotary connecting device 21 and a vertical connecting device 22, wherein the rotary connecting device 21 is located at the center of the superstructure 1, its top is connected to the superstructure 1, and its bottom is provided on the lower foundation 3, and the vertical connecting device 22 is located on the outer circumference of the rotary connecting device 21, with its upper and lower parts connected to the superstructure 1 and the lower foundation 3, respectively.

[0023] As shown in FIGS. 1, 2, 3, and 4, the vertical connection device 22 is provided in a circular shape, and the rotary connection device 21 is located at the center of the circle. During an earthquake, the vertical connection device 22 does not restrain the horizontal shift of the superstructure, but only provides the pressure-resistant load capacity in the vertical direction and does not bear any shear load capacity in the horizontal direction. On the other hand, the rotary connection device 21 restricts the superstructure so that it can only rotate, and restricts the linear displacement of the superstructure in the horizontal direction. As a result, the superstructure rotates rigidly around the rotary connection device 21 under the action of seismic force, and thereby rocks under the action of a strong earthquake. Due to the combined action of the rotary connection device 21 and the vertical connection device 22, during an earthquake, the superstructure 1 rotates rigidly around the rotary connection device 21, and it is also allowed to rock 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, reducing the damage and destruction of the superstructure 1 caused by the earthquake during an earthquake. In addition, the superstructure 1 can stably self-center after rocking, effectively suppressing the residual displacement of the structure after the earthquake, avoiding further expansion of the structural displacement, and reducing the repair cost after the earthquake.

[0024] This connection structure is suitable for a structure with high rigidity. A structure with high rigidity can meet the deformation requirements under extreme loads. Thus, the combined action of the rotary connection device 21 and the vertical connection device 22 can achieve the effects of earthquake resistance and seismic control, and a structure with high rigidity can reduce the dependence on structural ductility design.

[0025] Furthermore, under the restriction of the rotary connection device 21 and the vertical connection device 22, during an earthquake, the horizontal shift displacement caused by the rigid body rotation displacement of the superstructure 1 due to the action of the earthquake becomes 30% of the total horizontal shift of the superstructure 1. As a result, during an earthquake, the superstructure 1 can perform a self-centering rocking operation without causing the collapse of the structure due to excessive displacement. In a specific configuration, by using the rotary connection device 21 and the vertical connection device 22 and controlling the ratio to be 30% - 80%, both the earthquake resistance effect and the structural stability are considered.

[0026] As shown in Figures 2, 3, and 4, the vertical connection device 22 further includes a vertical tensile-compressive elastic base 221 and a pier 222. The vertical tensile-compressive elastic base 221 employs different structures depending on its location. When the vertical tensile-compressive elastic base 221 is located on the upper part of the connecting layer, the top of the vertical connection device 22 is directly connected to the superstructure 1 and the bottom is connected to the lower foundation 3 via the pier 222. When the vertical tensile-compressive elastic base 221 is located in the center of the connecting layer, the top of the vertical connection device 22 is connected to the superstructure 1 via the pier 222 and the bottom is connected to the lower foundation 3 via the pier 222. When the vertical tensile-compressive elastic base 221 is located on the lower part of the connecting layer, the top of the vertical connection device 22 is connected to the superstructure 1 via the pier 222 and the bottom is directly connected to the lower foundation 3, and the vertical connection device 22 and the rotary connection device 21 are at the same height.

[0027] As shown in Figures 3, 4, and 5, the rotating connection device 21 further includes a rotating box 211 and a rotating base 212, the rotating box 211 being provided on the lower foundation 3, and the rotating base 212 being provided at the center of the bottom surface of the superstructure 1 and located within the rotating box 211. When an earthquake occurs, the superstructure 1 drives the rotating base 212 to rotate around the axis in the rotating box 211, and restricts the superstructure 1 to rotate rigidly around the axis.

[0028] Furthermore, the vertical connection devices 22 are arranged in a circular pattern at equal intervals within the connection layer, and the rotary connection device 21 is located at the center of the circle.

[0029] Furthermore, the vertical connection device 22 is arranged symmetrically around the center, thereby ensuring that the support effect provided by the vertical connection device 22 is uniform and stable.

[0030] Furthermore, the upper structure 1 is a cylindrical structure including a cylindrical wall and a cylindrical bottom, and the tops of the rotary connecting device 21 and the vertical connecting device 22 are connected to the cylindrical bottom.

[0031] As shown in Figure 5, the superstructure 1 is further a cylindrical steel frame structure or a cylindrical concrete structure, and the rigidity of the cylindrical superstructure can be improved by designing the support parts or increasing the cross-sectional size. If the superstructure 1 is a cylindrical steel frame structure, its own rigidity is relatively high. If the superstructure 1 is a cylindrical concrete structure, the rigidity of the side walls can be improved by using steel or fiber-reinforced concrete in the side walls, or by applying prestress along the height direction or in the circumferential direction to the side walls.

[0032] Furthermore, the superstructure 1 can be designed as a conventional building structure including members such as columns, beams, and walls, or as a specific structure consisting of vertical compression bending members, the specific structure being a water tower, signal tower, power transmission tower, or industrial or military building.

[0033] Furthermore, the lower foundation 3 includes a support base 31 and a support pile 32, the support base 31 being supported in the ground by the support pile 32.

[0034] Furthermore, the vertical tensile-compressive elastic base 221 is equipped with a limiting device. When the tensile deformation or compressive deformation of the vertical tensile-compressive elastic base 221 reaches its design limit, the tensile stiffness or compressive stiffness of the vertical tensile-compressive elastic base 221 is significantly improved, thereby reducing the tensile-compressive deformation of the base.

[0035] Furthermore, the structure further includes an energy dissipation damping device 4, which is located within the connecting layer, is provided at intervals in the lower foundation 3, and is connected to the superstructure 1. The vertical tensile and compressive deformation of the energy dissipation damping device 4 provides buffering and energy consumption.

[0036] Preferably, the energy dissipation damping device 4 includes a viscous damper and a viscoelastic damper.

[0037] Preferably, the vertical tensile-compressive elastic base 221 is a helical tensile-compressive base, a disc spring base, a thick rubber base, and / or an air spring base, and in actual construction, multiple similar or different bases can be selected and combined depending on the working conditions at the site.

[0038] To those skilled in the art, it will be apparent that the present invention is not limited to the details of the exemplary embodiments described above, but can be realized in other specific forms without departing from the spirit or basic features of the invention. Therefore, from any viewpoint, the embodiments should be considered illustrative and not restrictive, and the scope of the invention is limited by the appended claims rather than the above description, and accordingly, all modifications included in the meaning and scope of equivalent elements of the claims are intended to be incorporated into the invention, and no reference numeral in the claims should be considered to limit the claims relating thereto. [Explanation of Symbols]

[0039] 1 Superstructure 2 Connection Structures 21 Rotary connector 211 Rotating Box 212 Rotating Base 22 Vertical connection device 221 Vertical tensile and compressive elastic base 222 Bridge piers 3 Lower foundation 31 Support stand 32 Support pile

Claims

1. A connecting structure having three-dimensional seismic damping and energy absorption buffering functions, comprising a superstructure (1), a connecting layer, and a lower foundation (3), wherein the connecting layer is located between the superstructure (1) and the lower foundation (3), and the connecting structure (2) is located within the connecting layer, and the connecting structure (2) comprises a rotating connecting device (21) and a vertical connecting device (22), wherein the rotating connecting device (21) is located at the center of the superstructure (1), its top is connected to the superstructure (1), and its bottom is provided on the lower foundation (3), and the vertical connecting device (22) is located on the outer circumference of the rotating connecting device (21), with its upper and lower parts connected to the superstructure (1) and the lower foundation (3), respectively. The rotary connecting device (21) rotates the superstructure (1) and limits the linear displacement of the superstructure (1) in the horizontal direction, causing the superstructure (1) to rotate rigidly around the rotary connecting device (21). The vertical connection device (22) does not restrain the horizontal shift of the superstructure (1), provides only pressure load capacity, and does not impart shear load capacity in the horizontal direction. The vertical connection device (22) includes a vertical tensile-compressive elastic base (221) and a pier (222), wherein when the vertical tensile-compressive elastic base (221) is provided on the upper part of the connecting layer, the top of the vertical connection device (22) is directly connected to the superstructure (1) and the bottom is connected to the lower foundation (3) via the pier (222); when the vertical tensile-compressive elastic base (221) is provided in the central part of the connecting layer, the top of the vertical connection device (22) is connected to the superstructure (1) via the pier (222) and the bottom is connected to the lower foundation (3) via the pier (222); and when the vertical tensile-compressive elastic base (221) is provided on the lower part of the connecting layer, the top of the vertical connection device (22) is connected to the superstructure (1) via the pier (222) and the bottom is directly connected to the lower foundation (3).

2. The connection structure with three-dimensional seismic damping function and energy absorption buffer function according to claim 1, characterized in that the horizontal shift displacement caused by the rigid rotational displacement of the superstructure (1) is 30% or more of the total horizontal shift of the superstructure (1).

3. The rotating connection device (21) includes a rotating box (211) and a rotating base (212), wherein the rotating box (211) is provided on the lower foundation (3), and the rotating base (212) is provided at the center of the bottom surface of the superstructure (1) and is located inside the rotating box (211), and the rotating base (212) rotates within the rotating box (211) about a spherical center, characterized in that the connection structure has a three-dimensional seismic damping function and an energy absorption buffer function as described in claim 1.

4. The connection structure with three-dimensional seismic damping function and energy absorption buffer function according to claim 1, characterized in that the vertical connection device (22) is provided in an annular shape at equal intervals within the connection layer, and the rotary connection device (21) is located at the center of the circle.

5. The superstructure (1) is a cylindrical structure including a cylindrical wall and a cylindrical bottom, and the tops of the rotating connecting device (21) and the vertical connecting device (22) are connected to the cylindrical bottom, characterized in that the connection structure has a three-dimensional seismic damping function and an energy absorption buffer function as described in claim 1.

6. The lower foundation (3) includes a support base (31) and a support pile (32), wherein the support base (31) is provided in the ground by the support pile (32), characterized in that the connection structure has a three-dimensional seismic damping function and an energy absorption buffer function as described in claim 1.

7. The connection structure according to claim 1, characterized in that the vertical tensile and compressive elastic base (221) is provided with a limiting device, thereby providing a three-dimensional seismic damping function and an energy absorption buffer function.

8. The connection structure according to claim 1, further comprising an energy dissipation seismic damping device (4), wherein the energy dissipation seismic damping device (4) is located within the connection layer, and the energy dissipation seismic damping device (4) is provided at intervals in the lower foundation (3) and is connected to the superstructure (1).

9. The connection structure with three-dimensional vibration damping function and energy absorption buffering function according to claim 1, characterized in that the vertical tensile compression elastic base (221) is a helical tensile compression base, a disc spring base, a thick rubber base and / or an air spring base.

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