Inertial amplification type resonance tuned mass underground space structure and shock isolation method

Abstract

The application relates to an underground space structure of an inertia-enhanced resonant tuned mass and a seismic isolation method. The underground space structure comprises a top plate, a bottom plate, side walls, middle columns and an inertia-enhanced resonant tuned mass periodic substructure. The top plate, the bottom plate and the side walls constitute the main body of the underground space structure, and the middle columns are arranged between the top plate and the bottom plate. Grooves are formed in the side walls and the middle columns, and the inertia-enhanced resonant tuned mass periodic substructure is arranged in the grooves in a vertical segmented mode. The periodic substructure comprises a translational column body and an inertia-enhanced resonant tuned mass unit. The translational column body is freely translational in the groove, and the two sides of the translational column body are connected to the two side surfaces of the groove through the resonant tuned mass unit. The resonant tuned mass unit is selected from one or more series-parallel connections of a tuning part, a damping part and an inerter part. Compared with the prior art, the application realizes the synergistic energy absorption and consumption and the common control of the middle column and the side wall response under the action of multi-level seismic vibration.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering and seismic isolation and vibration reduction, and relates to an underground space structure with inertial efficiency-enhanced resonant tuned mass and a seismic isolation method. Background Art

[0002] With the continuous advancement of urbanization, the development and utilization of underground space has gradually become an integral part of modern urban construction. Various types of underground structures, such as underground rail transit, underground commercial streets, and underground complexes, effectively alleviate the shortage of surface resources by integrating urban functions and optimizing spatial resources, and therefore have attracted great attention from urban planners. Actual earthquake damage surveys have shown that underground structures may not have the strong seismic performance expected under strong earthquakes. Earthquake damage cases clearly reveal the vulnerability of underground structures in earthquakes.

[0003] The shock-absorbing devices currently used in underground space structures are usually installed at the base and top of the columns of the underground space structure to reduce the stress response of the columns. However, the shock-absorbing devices that can be installed in this type of installation are simple in configuration and few in number, and their ability to control the seismic response of the structure under large earthquakes is weak. In addition, the columns of the underground space structure only occupy a very small part of the underground space structure, making it difficult to have a beneficial effect on the seismic response of the entire underground space structure. At the same time, the reduction in the shear force of the center column will lead to an increase in the seismic response of the side wall, which will have an adverse effect on the side wall structure. In addition, the mass block of the traditional tuned mass damper is extremely small compared to the underground space structure, the central frequency band is higher, and the ability to control low-frequency vibration is weak. Therefore, there is an urgent need to develop an underground space structure system that is equipped with energy-saving and column-side wall response control.

[0004] Patent CN118481171A discloses an underground structure of nonlinear inertia-type multi-stage self-resetting central columns under three-dimensional earthquake motion. The structure includes a top plate, a bottom plate, side walls, multiple sections of opening and closing self-resetting columns, and a nonlinear inertia-type self-resetting friction damper. The top plate, bottom plate, and side walls constitute an underground space structure. Vertically segmented self-resetting columns are arranged between the top plate and the bottom plate; nonlinear inertia-type self-resetting friction dampers are vertically arranged on the outside of the connection between each segmented self-resetting column. The nonlinear inertia-type self-resetting friction damper includes a shaft, a splint, and a rotating block. The splint clamps a rotating block, which is sleeved on the shaft. The shaft is connected to the self-resetting column; shape memory alloy strands are wound around the splint. While this patent provides enhanced inertial mass and inertial capacity control for each section of the central column, its seismic isolation control mechanism relies on the lifting and swaying of the central column segments, resulting in low dynamic isolation efficiency. It lacks the "column-in-column" tuned vibration absorption capability and seismic isolation band gap, and cannot achieve three-dimensional isolation protection for the inner columns of the "column-in-column" structure. Furthermore, the nonlinear inertial capacity self-resetting friction damper proposed in this patent needs to be installed outside the existing structure, requiring a certain amount of installation space and potentially altering the building's functionality. The limited size of the friction damper also precludes the use of large mass blocks, weakening the device's seismic response control capabilities.

[0005] Patent CN117605174A discloses a particle-tuning-collision composite damper with an adaptive vibration reduction mechanism adjustment function, including a multi-particle damping unit, a base, a universal roller, a composite energy-absorbing support system, and a collision plate; the multi-particle damping unit contains numerous spherical particles and a cavity for holding the particles; the base contains a bottom plate and a reaction support; the universal roller is located between the bottom plate and the bottom portion of the cavity for holding the particles in the multi-particle damping unit; the composite energy-absorbing support system connects the multi-particle damping module to the reaction support and is composed of three components in parallel: an inertial amplification element, a viscous damper, and an axial spring. However, this patent still belongs to a dynamic vibration absorption technology based on tuned particles, namely, dynamic vibration absorption based on the physical mass of the particles, dynamic tuning based on the spring, and damping energy dissipation based on particle collision. This patented technology does not have a multi-stage tuned vibration absorption mechanism, nor does it have a tuned mass inertia enhancement mechanism that is far greater than its physical mass. It cannot meet the requirements of high-efficiency dynamic vibration absorption and elastic wave attenuation of multi-inertia enhancement resonance units under the premise of limited central column mass in underground space structures. Summary of the Invention

[0006] The purpose of the present invention is to overcome at least one of the defects of the above-mentioned prior art and to provide an underground space structure and seismic isolation method with inertial enhanced resonant tuned mass. The present invention realizes the joint control of the enhanced energy absorption and energy consumption of structural vibration under multi-level seismic motion and the response of the central column and side walls.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] One of the technical solutions of the present invention is to provide an underground space structure with an inertial synergistic resonant tuned mass, the underground space structure comprising a top plate, a bottom plate, side walls, a center column, and an inertial synergistic resonant tuned mass periodic substructure, wherein the top plate, bottom plate, and side walls constitute the main body of the underground space structure, and a center column is arranged between the top plate and the bottom plate;

[0009] A slot is provided in each of the side walls and the center column, and a plurality of vertically segmented inertia-enhancing resonant tuning mass periodic substructures are arranged in the slot. The inertia-enhancing resonant tuning mass periodic substructure includes a translation column and an inertia-enhancing resonant tuning mass unit. The translation column is free to translate in the slot, and both sides of the translation column are connected to the two side surfaces of the slot through the inertia-enhancing resonant tuning mass unit. The inertia-enhancing resonant tuning mass unit is selected from one or more of a tuning part, a damping part, and an inertia-enhancing resonant tuning mass unit in series and parallel. The translation column acts as a tuning mass and plays the role of an additional mass block in the inertia-enhancing resonant tuning mass unit, and the translation column is free to translate in the slot. The mass ratio of the column to the underground space structure is much greater than that of the traditional tuned mass unit, which can effectively control the seismic response of the underground space structure. The translational column maintains a large column cross-section and can share the force transmitted by the top plate like a traditional column, that is, maintain the vertical bearing capacity. The inertia-enhanced resonant tuned mass units in the slots of the side walls and the middle column respectively realize the connection between the translational column and the side walls and the middle column. The tuning part is used to adjust the tuned vibration isolation frequency band of the translational column. The damping part is used for energy efficiency dissipation under local resonance and vibration limitation of the translational column. The inertia part is used for enhanced vibration absorption and low-frequency resonance of the translational column based on inertia mass efficiency.

[0010] As a preferred technical solution, by controlling the number of inertial enhanced resonant tuned mass periodic substructures, the seismic isolation gap required for underground space structures can be achieved to meet the enhanced energy isolation-absorption-dissipation under different earthquake intensities.

[0011] Furthermore, the middle column is connected to the top plate and the bottom plate through prestressed strands. The prestressed strands realize the swinging of the middle column under earthquake action. Different from the side walls fixedly connected to the top plate and the bottom plate, the middle column can provide self-resetting force for the middle column that swings under earthquake action, thereby reducing the residual displacement of the middle column.

[0012] As a preferred technical solution, the material of the prestressed stranded wire is selected from one or more of steel, nickel-titanium based alloy, and copper based alloy.

[0013] As an optimal technical solution, the prestressed strands are anchored on both sides of the contact surface between the center column and the top plate and bottom plate by anchor bolts. In addition to the anchoring function, the anchor bolts can also adjust the prestress value of the prestressed strands.

[0014] The translational column is connected to the central column via an inertial synergistic resonant tuned mass unit. When an external load acts on the underground space structure, the central column sways and consumes energy. Simultaneously, the translational column within the central column slot translates, driving the inertial synergistic resonant tuned mass unit to dissipate nonlinear energy, thereby controlling the seismic response of the central column. The translational movement of the translational column drives the rack within the inertial capacity element to translate, and the translational movement of the rack drives the flywheel within the inertial capacity element to rotate, thereby achieving synergistic inertial energy absorption and energy consumption control.

[0015] The translational column is connected to the side wall through an inertia-enhancing resonant tuned mass unit. When an external load acts on the underground space structure, the translational column in the side wall slot moves horizontally, driving the inertia-enhancing resonant tuned mass unit to dissipate nonlinear energy, thereby controlling the seismic response of the side wall. The translational movement of the translational column drives the rack in the inertial capacity element to move horizontally, and the translational movement of the rack drives the flywheel in the inertial capacity element to rotate, thereby realizing efficient inertial energy absorption and energy consumption control.

[0016] Furthermore, the top end or the bottom end of the translational column is in vertical contact with the top and bottom surfaces of the trough body, the bottom surface of the top plate or the top surface of the bottom plate respectively.

[0017] Furthermore, a plurality of convex rollers are arranged at the top or bottom end of the translation cylinder. The function of the convex rollers is to reduce the friction between the contact surface of the translation cylinder and the pad, which is conducive to the translation movement of the translation cylinder and achieves the purpose of pressure bearing and low friction.

[0018] As a preferred technical solution, a plurality of convex rollers are arranged at the top and bottom ends of the translation cylinder.

[0019] Furthermore, the material of the convex roller is selected from one or more of high-strength steel, cast iron, and composite metal with a smooth surface.

[0020] Furthermore, the plane of the convex roller contacts the top or bottom end of the translation cylinder, and the convex surface contacts the top and bottom surfaces of the trough body, the bottom surface of the top plate or the top surface of the bottom plate. The contact surface with the translation cylinder is the plane of the convex roller, which can reduce the stress on the surface of the translation cylinder, and the contact surface with the pad is the convex surface of the convex roller, which can reduce the friction between the two.

[0021] Furthermore, pads are arranged on the top and bottom surfaces of the trough body, the bottom surface of the top plate or the top surface of the bottom plate, and the convex surface of the convex roller contacts the pads, and the pads achieve the purpose of pressure bearing and low friction.

[0022] As a preferred technical solution, pads are arranged on the top and bottom surfaces of the trough body, the bottom surface of the top plate and the top surface of the bottom plate.

[0023] Furthermore, the material of the backing plate is selected from one or more of high-strength steel, cast iron, and composite metal with a smooth surface.

[0024] Furthermore, the tuning part adopts a tuning spring, the damping part adopts a viscous damper, and the inertial part adopts an inertial element. The two sides of the translational column are respectively connected to the two side surfaces of the trough body through parallel tuning springs and inertial elements, and parallel viscous dampers and inertial elements. The purpose of such series and parallel connection is to make the three form a tuned viscous mass damper (TVMD), which has the functions of tuning, energy absorption and energy consumption.

[0025] As a preferred technical solution, the two ends of the parallel tuning spring and the inertial element are respectively fixedly connected horizontally to one side of the translation column and one side surface of the slot body, and the two ends of the parallel viscous damper and the inertial element are respectively fixedly connected horizontally to the other side of the translation column and the other side surface of the slot body.

[0026] One of the technical solutions of the present invention is to provide a seismic isolation method using an inertial synergistic resonant tuned mass, wherein the method uses the underground space structure to perform seismic isolation of the underground space, and the method comprises the following steps:

[0027] Under the action of an earthquake, the center column of an underground space structure can swing and dissipate energy; after the earthquake, the center column returns to its original position under the action of the prestressed strands.

[0028] In addition, under the action of an earthquake, the translational column in the slot of the middle column will move relative to the middle column. The translational movement of the translational column is converted into rotation by the rack in the inertia element, realizing translation-rotation coupling. The translational column then drives the inertia-enhancing resonant tuned mass unit to induce translation-rotation coupling and produce geometrically nonlinear inertia-enhancing energy dissipation, thereby achieving vibration isolation and vibration energy absorption and dissipation based on the low-frequency periodic substructure, thereby reducing the seismic response of the middle column.

[0029] In addition, inertial efficiency-enhancing resonant tuned mass units and translational columns are also installed in the slots of the side walls to achieve the low-frequency seismic isolation band gap and efficient energy absorption and consumption of the side walls.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The underground space structure proposed by the present invention realizes the functions of enhanced energy absorption and energy dissipation and self-reset of the underground space structure under the action of multiple levels of earthquake motion. The self-reset and enhanced inertial energy absorption and energy dissipation of the middle column are realized by using the prestressed stranded wire arranged in the middle column and the inertial enhanced resonant tuned mass periodic substructure in the slot body of the middle column; the enhanced inertial energy absorption and energy dissipation of the side wall are realized by using the inertial enhanced resonant tuned mass periodic substructure in the slot body of the side wall. The present invention overcomes the defects of insufficient energy dissipation capacity and single mechanism of energy-dissipating self-reset columns in existing underground space structures, and realizes the enhanced control of structural vibration under the action of multiple levels of earthquake motion.

[0032] (2) The inertia-enhancing resonant tuned mass periodic substructure proposed in the present invention is arranged in the slots opened in the central column and the side wall. The series of tuned mass strings inside the periodic substructure are connected to each other through pressure-bearing low-friction pads. The inertia-enhancing resonant tuned mass periodic substructure is composed of an inertia part-tuning part connected in parallel, a translation column, and an inertia part-damping part connected in parallel in series, thus constructing a complete vibration energy input control path based on the inertia-tuning mass-inertia mass chain; the inertia-enhancing resonant tuned mass periodic substructure solves the existing vibration control problems. The inherent contradiction between high seismic isolation (vibration) efficiency and large deformation of the isolation bearings in the device, as well as the low seismic redundancy of the seismic isolation system, are difficult problems. The internal tuned mass of the inertial enhancement type resonant tuned mass periodic substructure belongs to the central column and side wall of the original seismic resistant underground space structure, which provides a new idea for introducing large-mass tuned vibration absorption technology into underground space structures. Its translational and rotational coupling effects can produce significant nonlinear inertia coefficients. The local resonance and mass amplification mechanism based on the periodic substructure significantly improves the "mass" type vibration isolation efficiency, broadens the vibration isolation frequency band and realizes the low frequency of the vibration isolation band gap.

[0033] (3) The present invention has standardized the design of the self-resetting central column and side wall of the underground space structure, and the corresponding inertial enhancement type resonant tuned mass periodic substructure inside. After the central column and side wall of the underground space structure are built with the periodic substructure, the vertical bearing capacity of the original seismic structure is still maintained. The inertial enhancement type resonant tuned mass periodic substructure has a simple structure and a small size, and is easy to implement modular installation according to actual engineering requirements, which can effectively improve the overall seismic performance of the underground structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the front cross-sectional structure of the underground space structure of the inertial synergistic resonant tuned mass in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the front cross-sectional structure of the top of the center column in an embodiment of the present invention;

[0036] Figure 3Schematic diagram of the front cross-sectional structure of the inertial synergistic resonant tuned mass periodic substructure in an embodiment of the present invention.

[0037] Description of the marks in the figure:

[0038] 1—top plate, 2—bottom plate, 3—side wall, 4—center column, 5—inertia-enhanced resonant tuned mass periodic substructure, 6—prestressed strands, 7—anchor bolts, 8—pad, 9—translational column, 10—convex roller, 11—tuning spring, 12—viscous damper, 13—inertia element. DETAILED DESCRIPTION

[0039] The present invention is described in detail below with reference to specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0040] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, used to describe common objects, merely refer to different instances of the same object and are not intended to imply that the objects described must be in a given order, whether temporally, spatially, sequentially, or in any other manner.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] Example:

[0043] An underground space structure with inertial enhancement type resonant tuned mass, such as Figure 1 and Figure 2 As shown, it includes a top plate 1, a bottom plate 2, side walls 3, a central column 4 and an inertial efficiency-enhancing resonant tuned mass periodic substructure 5. The top plate 1, the bottom plate 2 and the side walls 3 constitute the main body of the underground space structure, and the central column 4 is arranged between the top plate 1 and the bottom plate 2;

[0044] A slot is provided in each of the side walls 3 and the center column 4. A plurality of vertically segmented inertia-enhancing resonant tuning mass periodic substructures 5 are arranged in the slot. The inertia-enhancing resonant tuning mass periodic substructure 5 includes a translation column 9 and an inertia-enhancing resonant tuning mass unit. The translation column 9 is free to translate in the center of the slot. Both sides of the translation column 9 are connected to the two side surfaces of the slot through the inertia-enhancing resonant tuning mass unit. The inertia-enhancing resonant tuning mass unit is selected from one or more of the tuning part, the damping part, and the inertia capacity part in series and parallel connection. The translation column 9 acts as a tuning mass and plays the role of an additional mass block in the inertia-enhancing resonant tuning mass unit, and the translation column The mass ratio of 9 to the underground space structure is much greater than that of traditional tuned mass units, which can effectively control the seismic response of the underground space structure. The translational column 9 maintains a large column cross-section and can share the force transmitted by the top plate 1 like a traditional column, that is, maintain the vertical bearing capacity. The inertia-enhanced resonant tuned mass units in the slots of the side walls 3 and the middle column 4 respectively realize the connection between the translational column 9 and the side walls 3 and the middle column 4. The tuning part is used to adjust the tuned vibration isolation frequency band of the translational column 9, the damping part is used for energy efficiency dissipation under the action of local resonance and vibration limitation of the translational column 9, and the inertia capacity part is used for enhanced vibration absorption and low-frequency resonance of the translational column 9 based on the inertia capacity mass efficiency.

[0045] By controlling the number of the inertial enhanced resonant tuned mass periodic substructures 5, the required seismic isolation gap for underground space structures can be achieved to meet the enhanced energy isolation-absorption-dissipation requirements under different earthquake intensities.

[0046] The center column 4 is connected to the top plate 1 and the bottom plate 2 by prestressed strands 6. The prestressed strands 6 enable the center column 4 to sway under earthquake action. Unlike the side walls 3 that are fixedly connected to the top plate 1 and the bottom plate 2, the prestressed strands 6 can provide a self-restoring force for the center column 4 that sways under earthquake action, thereby reducing the residual displacement of the center column 4.

[0047] The material of the prestressed strand 6 is selected from one or more of steel, nickel-titanium-based alloy, and copper-based alloy, and in this embodiment, steel is preferred;

[0048] The prestressed strands 6 are anchored to the contact surfaces of the center column 4 and the top plate 1 and bottom plate 2 by anchor bolts 7. In addition to the anchoring function, the anchor bolts 7 can also adjust the prestress value of the prestressed strands 6.

[0049] The translational column 9 is connected to the middle column 4 via an inertial synergistic resonant tuned mass unit. When an external load acts on the underground space structure, the middle column 4 sways and dissipates energy. At the same time, the translational column 9 at the center of the trough of the middle column 4 also translates, driving the inertial synergistic resonant tuned mass unit to dissipate nonlinear energy, thereby controlling the seismic response of the middle column 4. The translational movement of the translational column 9 drives the rack in the inertial capacity element 13 to translate, and the translational movement of the rack drives the flywheel in the inertial capacity element 13 to rotate, thus achieving synergistic inertial energy absorption and energy dissipation control.

[0050] The translational column 9 is connected to the side wall 3 via an inertial synergistic resonant tuned mass unit. When an external load acts on the underground space structure, the translational column 9 at the center of the side wall 3 trough moves, driving the inertial synergistic resonant tuned mass unit to dissipate nonlinear energy, thereby controlling the seismic response of the side wall 3. The translational movement of the translational column 9 drives the rack in the inertial capacity element 13 to move, and the translational movement of the rack drives the flywheel in the inertial capacity element 13 to rotate, achieving synergistic inertial energy absorption and energy dissipation control.

[0051] The top or bottom end of the translational column 9 is in vertical contact with the top and bottom surfaces of the trough, the bottom surface of the top plate 1 or the top surface of the bottom plate 2 respectively;

[0052] Several convex rollers 10 are arranged at the top and bottom ends of the translation cylinder 9. The function of the convex rollers 10 is to reduce the friction between the contact surface of the translation cylinder 9 and the pad 8, which is conducive to the translation of the translation cylinder 9 and achieves the purpose of pressure bearing and low friction.

[0053] The material of the convex roller 10 is selected from one or more of high-strength steel, cast iron, and composite metal with a smooth surface, and is preferably steel in this embodiment;

[0054] The plane of the convex roller 10 contacts the top or bottom end of the translation cylinder 9. The convex surface contacts the top and bottom surfaces of the trough body, the bottom surface of the top plate 1 or the top surface of the bottom plate 2. The contact surface with the translation cylinder 9 is the plane of the convex roller 10, which can reduce the stress on the surface of the translation cylinder 9. The contact surface with the pad 8 is the convex surface of the convex roller 10, which can reduce the friction between the two.

[0055] Pads 8 are arranged on the top and bottom surfaces of the trough, the bottom surface of the top plate 1 and the top surface of the bottom plate 2. The convex surface of the convex roller 10 contacts the pads 8, and the pads 8 achieve the purpose of pressure bearing and low friction.

[0056] The material of the backing plate 8 is selected from one or more of high-strength steel, cast iron, and composite metal with a smooth surface, and is preferably steel in this embodiment;

[0057] like Figure 3As shown, the tuning part uses a tuning spring 11, the damping part uses a viscous damper 12, and the inertia part uses an inertia element 13. The two sides of the translational cylinder 9 are connected to the two side surfaces of the tank body through the parallel tuning spring 11 and inertia element 13, and the parallel viscous damper 12 and inertia element 13 respectively. The purpose of such series and parallel connection is to make the three constitute a tuned viscous mass damper (TVMD), which has the functions of tuning, energy absorption and energy dissipation.

[0058] The two ends of the parallel tuning spring 11 and the inertial element 13 are respectively fixedly connected horizontally to the left side of the translation column 9 and the left side surface of the slot body, and the two ends of the parallel viscous damper 12 and the inertial element 13 are respectively fixedly connected horizontally to the right side of the translation column 9 and the right side surface of the slot body.

[0059] A seismic isolation method using an inertial enhanced resonant tuned mass is provided, wherein the above-mentioned underground space structure is used to isolate the underground space, and the specific steps are as follows:

[0060] Under the action of an earthquake, the center column 4 of the underground space structure may swing and consume energy; after the earthquake, the center column 4 returns to its initial position under the action of the prestressed strands 6;

[0061] In addition, under the action of an earthquake, the translational column 9 in the slot of the middle column 4 will move relative to the middle column 4. The translational movement of the translational column 9 is converted into rotation by the rack in the inertia element 13, realizing translation-rotation coupling. As a result, the translational column 9 drives the inertia enhancement resonant tuned mass unit to induce translation-rotation coupling and generate geometrically nonlinear inertia enhancement energy dissipation, thereby realizing vibration isolation and vibration energy absorption and dissipation based on the low-frequency periodic substructure, thereby reducing the seismic response of the middle column 4.

[0062] In addition, an inertial efficiency-enhancing resonant tuned mass unit and a translation column 9 are also installed in the slot body of the side wall 3 to achieve a low-frequency seismic isolation band gap and efficient energy absorption and consumption of the side wall 3.

[0063] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. An underground space structure with inertial synergy type resonant tuned mass, characterized in that: The underground space structure comprises a top plate (1), a bottom plate (2), side walls (3), a central column (4), and an inertial efficiency-enhancing resonant tuned mass periodic substructure (5); the top plate (1), the bottom plate (2), and the side walls (3) constitute the main body of the underground space structure; a central column (4) is arranged between the top plate (1) and the bottom plate (2); A slot is provided in each of the side walls (3) and the center column (4), wherein a vertically segmented inertia-enhancing resonant tuning mass periodic substructure (5) is arranged in the slot. The inertia-enhancing resonant tuning mass periodic substructure (5) comprises a translation column (9) and an inertia-enhancing resonant tuning mass unit. The translation column (9) is free to translate in the slot. Both sides of the translation column (9) are connected to both side surfaces of the slot via the inertia-enhancing resonant tuning mass unit. The inertia-enhancing resonant tuning mass unit is selected from a tuning part, a damping part, and an inertia-enhancing resonant tuning mass unit. Both sides of the translational column (9) are connected to both side surfaces of the slot body through a parallel tuning part and an inertial capacity part, and a parallel damping part and an inertial capacity part, respectively.

2. The underground space structure of inertial synergistic resonance tuned mass according to claim 1, characterized in that: The center column (4) is connected to the top plate (1) and the bottom plate (2) via prestressed strands (6).

3. The underground space structure of inertial synergistic resonance tuned mass according to claim 1, characterized in that: The top end or the bottom end of the translational column (9) is in contact with the top and bottom surfaces of the trough body, the bottom surface of the top plate (1) or the top surface of the bottom plate (2) in the vertical direction, respectively.

4. The underground space structure of inertial synergistic resonance tuned mass according to claim 3, characterized in that: A convex roller (10) is arranged at the top or bottom end of the translation cylinder (9).

5. The underground space structure of inertial synergistic resonance tuned mass according to claim 4, characterized in that: The material of the convex roller (10) is selected from one or more of steel, cast iron, and composite metal.

6. The underground space structure of inertial synergistic resonance tuned mass according to claim 4, characterized in that: The plane of the convex roller (10) contacts the top or bottom end of the translation cylinder (9), and the convex surface contacts the top and bottom surfaces of the trough body, the bottom surface of the top plate (1) or the top surface of the bottom plate (2).

7. The underground space structure of inertial synergistic resonance tuned mass according to claim 6, characterized in that: Pads (8) are arranged on the top and bottom surfaces of the trough body, the bottom surface of the top plate (1) or the top surface of the bottom plate (2), and the convex surface of the convex roller (10) is in contact with the pads (8).

8. The underground space structure of inertial synergistic resonance tuned mass according to claim 7, characterized in that: The material of the backing plate (8) is selected from one or more of steel, cast iron, and composite material metal.

9. The underground space structure of inertial synergistic resonance tuned mass according to claim 1, characterized in that: The tuning part adopts a tuning spring (11), the damping part adopts a viscous damper (12), and the inertial part adopts an inertial element (13).

10. A seismic isolation method using an inertial enhanced resonant tuned mass, characterized in that: The method uses the underground space structure according to any one of claims 1 to 9 to perform seismic isolation of the underground space, and the method comprises the following steps: Under the action of an earthquake, the middle column (4) of the underground space structure swings and consumes energy; after the earthquake ends, the middle column (4) returns to its initial position under the action of the prestressed strands (6); Under the action of an earthquake, the translation column (9) in the slot of the middle column (4) moves relative to the middle column (4). The translation column (9) moves in translation, and the translation is converted into rotation through the rack in the inertia element (13), thereby realizing translation-rotation coupling. The translation column (9) drives the inertia enhancement type resonant tuned mass unit to induce translation-rotation coupling and generate inertia enhancement energy consumption, thereby realizing vibration isolation and vibration energy absorption-dissipation based on the low-frequency periodic substructure. An inertial efficiency-enhancing resonant tuning mass unit and a translation column (9) are also installed in the slot body of the side wall (3) to achieve a low-frequency seismic isolation band gap and efficient energy absorption and consumption of the side wall (3).

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