Easy overall control rocking type self-centering vibration-damping and vibration isolation structure

Abstract

This invention discloses a rocking-type self-centering vibration-damping and vibration-isolating structure that is easy to control overall, comprising a superstructure, a base mounting layer, and a foundation. [Solution] Unlike conventional horizontal shear isolation principles, the superstructure generates rigid rotation around a rotating hinge base, rocking as a whole within the design tolerance, and absorbing and dissipating energy through the deformation of the vertical tensile-compression base and energy dissipation device. This structural system is particularly suitable for highly rigid structures because it can adapt to the deformation requirements of structures under extreme loads while reducing the reliance on ductile design of general building structures. This structural system effectively combines seismic isolation technology and vibration control technology, providing a new vibration control design concept to mitigate damage and destruction during strong earthquakes, and possesses both innovation and practicality. Due to its functionality and the recoverability of energy consumption, it can effectively suppress residual displacement after an earthquake, having great economic and social value.

Description

Technical Field

[0001] The present invention relates to the technical field of recoverable functional earthquake protection structure systems, and particularly to a locking type self-centering earthquake protection and vibration prevention structure that is easy to overall control.

Background Art

[0002] In recent years, earthquake protection structure systems with recoverable functions have become a research hotspot in the field of earthquake engineering. The design goal of this structure system is to maintain the allowable level of functionality of the building during an earthquake and enable the restoration of the usage function with no need for complex repairs or only minor repairs after the earthquake. This design concept is proposed based on improving the seismic resistance of urban buildings and infrastructure and reducing the economic losses and social impacts caused by earthquake disasters.

[0003] Current design concepts for building structures to cope with earthquakes mainly include seismic design, performance-based seismic design, base isolation and energy dissipation damping technologies, seismic design of non-structural members, and structural optimization design. 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. Rocking self-centering structures can effectively suppress residual displacement after an earthquake and ensure the functionality and safety of the structure. Furthermore, because they are easy to repair and quick to construct, rocking self-centering structures have great economic and social value. Due to the rocking action, the ductility design requirements of the structure itself are reduced, and the cost of the structure can be saved. Rocking self-centering structures can be applied to various structural systems such as rocking bridge piers, reinforced concrete frame structures, steel structures, and shear wall structures. Although rocking self-centering structures have the great advantages of outstanding seismic resistance and rapid recovery after an earthquake, they face several challenges and problems in practical application. Designing rocking self-centering structures requires considering multiple factors, including structural stability, strength, and behavior under various seismic intensities, which increases design complexity. Furthermore, enabling the structure to self-center after rocking typically requires specialized materials and techniques such as post-tensioned, prestressed, and tendons, which can increase construction difficulty and cost.

[0004] As described above, improving the seismic resistance and resilience of building structures through scientific research and technological innovation, providing simple structures that can rock stably during earthquakes and exhibit minimal residual deformation after an earthquake, is a challenge that those skilled in the art must address urgently. [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] This invention provides an easily controllable, rocking-type self-centering earthquake-resistant and vibration-damping structure that reduces structural damage caused by strong earthquakes and minimizes residual deformation of the structure after an earthquake, thereby contributing to the rapid recovery of the structure's functionality. [Means for solving the problem]

[0006] To solve the above technical problems, the present invention employs the following technical solutions.

[0007] The present invention provides a rocking-type self-centering vibration-damping and vibration-isolating structure that is easy to control overall, The structure includes a superstructure, a base mounting layer, and a foundation, wherein the base mounting layer has an internal vertical member positioned at the planar center of gravity of the superstructure, and lateral vertical members are spaced along the direction of the contour of the outer periphery of the superstructure, the upper end of the internal vertical member is connected to the superstructure, and the lower end is connected to the foundation via a rotating hinge base, and vertical tension-compression bases are attached to the lateral vertical members. The aforementioned rotating hinge base allows rotational displacement of the superstructure while limiting the linear horizontal displacement of the superstructure. The aforementioned vertical tensile-compression base does not restrain the horizontal shift of the superstructure, provides only pressure load capacity, and does not provide shear load capacity in the horizontal direction.

[0008] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, the superstructure can be designed as a conventional building structure including columns, beams, and wall members, 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.

[0009] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, the horizontal shift displacement caused by the rigid body rotational displacement of the superstructure due to the action of an earthquake is 30% to 80% of the horizontal shift of the entire superstructure.

[0010] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, the vertical tensile-compression base can be a helical tensile-compression base, a disc spring base, a thick rubber base, or an air spring base, and in the planar design of the base mounting layer, multiple identical vertical tensile-compression bases or combinations of multiple types of vertical tensile-compression bases can be used.

[0011] In the rocking-type self-centering vibration-damping and vibration-damping structure of the present invention, which allows for easy overall control, the vertical tensile-compression base is further equipped with a position regulating device, the position regulating device includes a compression-restricted position regulating part and a tension-restricted position regulating part, a convex-shaped mounting groove is provided at the mounting position of the vertical tensile-compression base, the vertical tensile-compression base is mounted in the mounting groove, the compression-restricted position regulating part is mounted on the top of the vertical tensile-compression base and is located above the mounting groove, when the vertical tensile-compression base reaches its compression limit, the compression-restricted position regulating part contacts the top of the mounting groove, the tension-restricted position regulating part is mounted on the lower part of the vertical tensile-compression base and is located in an expanded space below the mounting groove, and when the vertical tensile-compression base reaches its compression limit, the tension-restricted position regulating part contacts the top wall of the mounting groove.

[0012] In the rocking-type self-centering vibration-damping and vibration-damping structure of the present invention, which allows for easy overall control, the vertical tensile-compression base is further attached to the central part of the base mounting layer, and lateral vertical members are connected to the upper and lower parts of the vertical tensile-compression base, respectively, with the upper lateral vertical member being connected to the superstructure and the lower lateral vertical member being connected to the foundation.

[0013] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, if the vertical tensile-compression base is provided at the top of the base mounting layer, the upper part of the vertical tensile-compression base is connected to a vertical member of the bottom layer of the superstructure, and the lower part is connected to the foundation via a lateral vertical member.

[0014] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, the vertical tension-compression base is provided at the bottom of the base mounting layer, the vertical tension-compression base and the rotary hinge base are located at the same height, the upper part of the vertical tension-compression base is connected to the superstructure via a lateral vertical member, and the lower part is connected to the foundation.

[0015] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, a lateral restraint is further provided at the connection point between the vertical tensile-compression base and the foundation.

[0016] In the rocking-type self-centering vibration-damping and vibration-isolating structure of the present invention, which allows for easy overall control, an energy dissipation vibration control device is further mounted vertically on the base mounting layer, and the energy dissipation vibration control device deforms in synchronization with the vertical tensile and compression base. [Effects of the Invention]

[0017] Compared to the prior art, the present invention has the following beneficial effects.

[0018] This invention provides a rocking-type self-centering seismic isolation and vibration-damping structure that is easy to control overall. Unlike conventional horizontal shear isolation principles, the superstructure generates rigid rotation around a rotating hinge base, rocking as a whole within the design tolerance, and absorbing and dissipating energy through the deformation of the vertical tensile-compression base and energy dissipation device. This structural system is particularly suitable for highly rigid structures because it can adapt to the deformation requirements of structures under extreme loads while reducing the reliance of general building structures on ductility. This structural system effectively combines seismic isolation and vibration control technologies, providing a new vibration control design concept to mitigate damage and destruction during strong earthquakes, and possesses both innovation and practicality. Because the structure has high stability and high self-centering ability, it can effectively suppress residual displacement after an earthquake, and has great economic and social value.

[0019] The present invention will be further described below with reference to the drawings.

Brief Description of the Drawings

[0020] [Figure 1] It is a schematic diagram of three mounting positions of a vertical tension-compression base of a locking type self-centering earthquake-proof and vibration-proof structure that is easy to control overall according to the present invention. [Figure 2] It is a front schematic diagram of a locking type self-centering earthquake-proof and vibration-proof structure that is easy to control overall provided by the present invention. [Figure 3] It is a top schematic diagram of the locking type self-centering earthquake-proof and vibration-proof structure that is easy to control overall in FIG. 2. [Figure 4] It is a schematic diagram of deformation simulated by finite element software under the action of horizontal seismic force for the locking type self-centering earthquake-proof and vibration-proof structure that is easy to control overall in FIG. 2. [Figure 5] In the locking type self-centering earthquake-proof and vibration-proof structure that is easy to control overall in FIG. 2, the ratio of the displacement angle and the rigid body rotation displacement angle of the entire structure under the action of seismic forces at various levels (major earthquake, moderate earthquake, minor earthquake) is shown, whereby the motion characteristics of the structure under seismic action can be intuitively understood. [Figure 6] It is a schematic diagram of the installation of a position restricting device of a locking type self-centering earthquake-proof and vibration-proof structure that is easy to control overall provided by the present invention.

Embodiments for Carrying out the Invention

[0021] As shown in FIGS. 1 to 6, the present invention discloses a locking type self-centering earthquake and vibration prevention structure that is easy to Overall control, including an upper structure 1, a base attachment layer 2, and a foundation 3. The upper structure 1 is a conventional building structure including columns, beams, and wall members, or a specific structure composed of vertical compression bending members. For example, it can be designed as a water supply tower, a signal tower, a transmission tower, an industrial building, or a military building. Through reasonable design, in the upper structure 1, the horizontal shift displacement caused by the rigid body rotation displacement due to the action of an earthquake is preferably 30% or more of the horizontal shift of the entire upper structure 1, and generally, 30% to 80% is preferable. The upper structure 1 can increase its stiffness by installing supports or increasing the cross-sectional size.

[0022] The base attachment layer 2 is provided with an internal vertical member 21, a lateral vertical member 22, and a diagonal brace 23. The internal vertical member 21 is arranged at a position close to the planar centroid of the upper structure 1. Its upper end is connected to the upper structure 1, and its lower end is connected to the foundation 3 through a rotational hinge base 4. The lateral vertical member 22 is arranged at intervals along the outer periphery of the upper structure 1 along the direction of the contour of the upper structure 1. The diagonal brace 23 is located in the base attachment layer 2 and is connected from the top of each lateral vertical member 22 to the rotational hinge base 4.

[0023] The rotational hinge base 4 limits the linear displacement in the horizontal direction of the upper structure 1 connected thereto while enabling rotational displacement. Thereby, the upper structure 1 undergoes rigid body rotation around the rotational hinge base 4 under the action of seismic force, ensuring stable centering of the structure after locking.

[0024] The vertical tension compression base 5 does not restrain the horizontal shift of the upper structure 1, provides only the compressive load capacity, and does not bear any shear load capacity in the horizontal direction.

[0025] The vertical tensile compression base 5 may be a helical tensile compression base, a disc spring base, a thick rubber base, an air spring base, etc., and in the planar design of the base mounting layer 2, multiple identical vertical tensile compression bases 5, or a combination of multiple types of vertical tensile compression bases 5, can be used.

[0026] The vertical tensile compression base 5 is equipped with a position regulating device, which includes a compression-restricted position regulating section 6 and a tension-restricted position regulating section 7. A convex-shaped mounting groove 8 is provided at the mounting position of the vertical tensile compression base 5, and the vertical tensile compression base 5 is mounted within the mounting groove 8. The compression-restricted position regulating section 6 is mounted on the top of the vertical tensile compression base 5 and is located above the mounting groove 8. When the vertical tensile compression base 5 reaches its compression limit, the compression-restricted position regulating section 6 contacts the top of the mounting groove 8. The tension-restricted position regulating section 7 is mounted on the bottom of the vertical tensile compression base 5 and is located in an expanded space below the mounting groove 8. When the vertical tensile compression base 5 reaches its compression limit, the tension-restricted position regulating section 7 contacts the top wall of the mounting groove 8. When the tensile or compressive deformation of the vertical tensile compression base 5 reaches its designed limit, the tensile or compressive stiffness of the vertical tensile compression base 5 increases significantly, preventing the superstructure from overturning.

[0027] Example 1

[0028] The vertical tensile-compression base 5 is attached to the center of the base mounting layer 2, and lateral vertical members 22 are connected to both the upper and lower ends of the vertical tensile-compression base 5, with the upper lateral vertical member 22 being connected to the superstructure 1 and the lower lateral vertical member 22 being connected to the foundation 3.

[0029] Example 2

[0030] The differences from Example 1 are as follows: The vertical tensile-compression base 5 is provided at the top of the base mounting layer 2. The upper part of the vertical tensile-compression base 5 is directly connected to the vertical member at the bottom of the superstructure 1, and the lower part is connected to the foundation 3 via the lateral vertical member 22.

[0031] Example 3

[0032] The differences between this embodiment and Embodiments 1 and 2 are as follows: The vertical tensile-compression base 5 is provided at the bottom of the base mounting layer 2, the vertical tensile-compression base 5 and the rotary hinge base 4 are located at the same height, the upper part of the vertical tensile-compression base 5 is connected to the superstructure 1 via the lateral vertical member 22, and the lower part is directly connected to the foundation 3.

[0033] Furthermore, lateral restraints may be added to the connection point between the vertical tensile-compressive base 5 and the foundation 3. These lateral restraints may be located on the inner wall of the mounting groove, thereby allowing the base to withstand both vertical tensile and compressive forces and resist horizontal shear forces.

[0034] Example 4

[0035] The base mounting layer 2 is further provided with an energy dissipation damping device, which is mounted vertically to the base mounting layer 2. Types of energy dissipation damping devices include viscous dampers and viscoelastic dampers, and energy is absorbed or dissipated through the deformation of the energy dissipation damping device and the vertical tensile-compressive base 5.

[0036] Example 5

[0037] This paper presents the finite element method analysis results for a rocking-type self-centering seismic isolation / vibration isolation structure and predicts its effectiveness during an earthquake. In this calculation example, superstructure 1 is a 9-story, 2-span, 1-frame steel structure with a design seismic intensity of 8 degrees, 0.2g, site category III, group 2, site characteristic period of 0.55s, and static load of floor stabilizers of 5kN / m 2 The live load is 2 kN / m 2 That is the case.

[0038] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the present invention, without departing from the spirit of the invention, should all fall within the scope of protection defined in the claims of the present invention. [Explanation of Symbols]

[0039] 1 Superstructure 2 Base mounting layer 3 Basics 4-turn hinge base 5 Vertical tensile and compressive base 6 Compression Position Restriction Section 7. Tensile position regulating section 8. Mounting groove 21 Internal vertical member 22 Lateral vertical member 23 Diagonal brace

Claims

1. A rocking-type self-centering vibration-damping and vibration-isolating structure that allows for easy overall control, The structure includes a superstructure (1), a base mounting layer (2), and a foundation (3), wherein the base mounting layer (2) has an internal vertical member (21) positioned at the center of gravity of the superstructure (1), and lateral vertical members (22) are spaced apart around the outer periphery of the superstructure (1) along the direction of its contour, the upper end of the internal vertical member (21) is connected to the superstructure (1), and the lower end is connected to the foundation (3) via a rotating hinge base (4), and a vertical tension-compression base (5) is attached to the lateral vertical member (22). The rotating hinge base (4) allows rotational displacement of the superstructure (1) while limiting the linear displacement of the superstructure (1) in the horizontal direction. The vertical tensile compression base (5) does not restrain the horizontal shift of the superstructure (1) and provides only pressure load capacity, and does not impose shear load capacity in the horizontal direction. The vertical tensile compression base (5) is equipped with a position regulating device, the position regulating device includes a compression position regulating part (6) and a tension position regulating part (7). A convex-shaped mounting groove (8) is provided at the mounting position of the vertical tensile compression base (5), the vertical tensile compression base (5) is mounted within the mounting groove (8), and the compression position regulating part (6) is the vertical tensile compression base A rocking-type self-centering vibration-damping and vibration-damping structure that is easy to control overall, characterized in that the compression position regulating part (6) is attached to the top of the base (5) and is located above the mounting groove (8), and when the vertical tensile compression base (5) reaches its compression limit, the compression position regulating part (6) contacts the top of the mounting groove (8), and the tensile position regulating part (7) is attached to the lower part of the vertical tensile compression base (5) and is located in an expanded space below the mounting groove (8), and when the vertical tensile compression base (5) reaches its compression limit, the tensile position regulating part (7) contacts the top wall of the mounting groove (8).

2. The superstructure (1) can be designed as a conventional building structure including columns, beams, and wall members, or as a specific structure consisting of vertical compression bending members, and the specific structure is a water tower, signal tower, power transmission tower, or industrial or military building, characterized in that the rocking-type self-centering seismic isolation / vibration isolation structure with easy overall control is as described in claim 1.

3. The rocking-type self-centering seismic isolation / vibration isolation structure according to claim 1, characterized in that the horizontal shift displacement caused by the rigid rotational displacement of the superstructure (1) due to the action of an earthquake is 30% to 80% of the total horizontal shift of the superstructure (1).

4. The vertical tensile compression base (5) is a helical tensile compression base, a disc spring base, a thick rubber base, or an air spring base, and in the planar design of the base mounting layer (2), multiple identical vertical tensile compression bases (5) or multiple types of vertical tensile compression bases (5) can be used in combination, characterized in that the rocking type self-centering vibration isolation / vibration isolation structure with easy overall control is as described in claim 1.

5. The rocking-type self-centering vibration-damping and vibration-damping structure according to claim 1, characterized in that the vertical tensile-compression base (5) is attached to the central part of the base mounting layer (2), and lateral vertical members (22) are connected to the upper and lower parts of the vertical tensile-compression base (5), respectively, the upper lateral vertical member (22) is connected to the superstructure (1), and the lower lateral vertical member (22) is connected to the foundation (3).

6. The rocking-type self-centering vibration-damping and vibration-damping structure according to claim 1, characterized in that when the vertical tensile-compression base (5) is provided at the top of the base mounting layer (2), the upper part of the vertical tensile-compression base (5) is connected to a vertical member of the bottom layer of the superstructure (1), and the lower part is connected to the foundation (3) via a lateral vertical member (22).

7. The rocking-type self-centering vibration-damping and vibration-damping structure according to claim 1, characterized in that the vertical tensile-compression base (5) is provided at the bottom of the base mounting layer (2), the vertical tensile-compression base (5) and the rotary hinge base (4) are located at the same height, and the upper part of the vertical tensile-compression base (5) is connected to the superstructure (1) via a lateral vertical member (22), and the lower part is connected to the foundation (3).

8. The rocking-type self-centering vibration-damping and vibration-damping structure according to claim 7, characterized in that a lateral restraint is provided at the connection point between the vertical tension-compression base (5) and the foundation (3).

9. The rocking-type self-centering seismic isolation and vibration isolation structure according to claim 1, characterized in that an energy dissipation vibration damping device is vertically mounted on the base mounting layer (2), and the energy dissipation vibration damping device deforms in synchronous with the vertical tensile and compressive base.

Images