Underground space structure of inertia synergistic resonance tuned mass and seismic isolation method

Abstract

The invention relates to an underground space structure of inertia synergistic type resonance tuned mass and a seismic isolation method, the underground space structure comprises a top plate, a bottom plate, side walls, a middle column and inertia synergistic type resonance tuned mass periodic substructures, the top plate, the bottom plate and the side walls form a main body of the underground space structure, and the middle column is arranged between the top plate and the bottom plate; groove bodies are formed in the side walls and the middle column, vertically-segmented inertia synergistic type resonance tuned mass periodic substructures are arranged in the groove bodies, each periodic substructure comprises a translation column body and an inertia synergistic type resonance tuned mass unit, the translation column bodies freely translate in the groove bodies, and the inertia synergistic type resonance tuned mass units are arranged in the groove bodies. The two sides of the translation cylinder are connected with the surfaces of the two sides of the groove body through resonance tuned mass units, and the resonance tuned mass units are selected from one or more of a tuning part, a damping part and an inerter part which are connected in series and in parallel. Compared with the prior art, joint control of synergistic energy absorption-energy consumption and center pillar side wall response of structural vibration under the multi-level seismic action is achieved.

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 of inertial efficiency-enhanced resonant tuning 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 important part of modern urban construction. Various types of underground space structures such as underground rail transit, underground commercial streets, and underground complexes have effectively alleviated the tension of ground resources by integrating urban functions and optimizing spatial resources, and therefore have been highly valued by urban planners. Actual earthquake damage surveys have shown that underground space structures may not have good seismic resistance under strong earthquake conditions as traditional views believe. Earthquake damage cases clearly reveal the fragility of underground space structures under earthquake conditions.

[0003] At present, the shock-absorbing devices used in underground space structures are usually installed at the bottom and top of the columns in 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 small in number, and have weak control capabilities for the seismic response of the structure under large earthquakes. In addition, the columns in the underground space structure only occupy a very small part of the underground space structure, and it is difficult to have a beneficial effect on the seismic response of the overall underground space structure. At the same time, the decrease in the shear force of the 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, it is urgent to develop an underground space structure system that is equipped with energy-saving and middle column side wall response control.

[0004] Patent CN118481171A discloses an underground structure of a nonlinear inertia-capacitive multi-stage self-resetting middle column under three-dimensional earthquake motion. The structure includes a top plate, a bottom plate, a side wall, a multi-section opening and closing self-resetting column and a nonlinear inertia-capacitive self-resetting friction damper. The top plate, the bottom plate and the side wall constitute an underground space structure. A vertically segmented self-resetting column is arranged between the top plate and the bottom plate; a nonlinear inertia-capacitive self-resetting friction damper is vertically arranged on the outside of the connection between each segmented self-resetting column. The nonlinear inertia-capacitive self-resetting friction damper includes a shaft rod, a clamping plate and a rotating block. The clamping plate clamps a rotating block, which is sleeved on the shaft rod, and the shaft rod is connected to the self-resetting column; a shape memory alloy strand is wound around the clamping plate. Although this patent can provide the inertial mass and inertial control force applicable to each section of the middle column, its seismic isolation control mechanism relies on the lifting and swinging of the middle column section, and its dynamic isolation efficiency is low; it does not have the "column-in-column" tuning vibration absorption capability and seismic isolation band gap, and cannot achieve three-dimensional isolation protection for the inner column of the "column-in-column". In addition, the nonlinear inertial self-resetting friction damper proposed in this patent needs to be installed on the outside of the existing structure, which requires a certain installation space and may also change the function of the building; the volume limitation of the friction damper also makes it impossible to use a large mass block, which weakens the seismic response control capability of the device.

[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 dissipation support system, and a collision plate; the multi-particle damping unit includes a plurality of spherical particles and a cavity for holding particles; the base includes a bottom plate and a reaction support; the universal roller is located between the bottom of the cavity for holding particles in the multi-particle damping unit and the bottom plate; the composite energy dissipation support system connects the multi-particle damping module with 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, that is, dynamic vibration absorption based on the physical mass of particles, dynamic tuning based on springs, 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 much larger than its physical mass. It cannot meet the requirements of high-efficiency dynamic vibration absorption and elastic wave attenuation of multi-inertia enhancement type 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 defect 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 consumption of the structural vibration under the action of multiple levels of seismic motion and the response of the center 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 of inertial synergy-enhancing resonant tuned mass, the underground space structure comprises a top plate, a bottom plate, a side wall, a middle column and an inertial synergy-enhancing resonant tuned mass periodic substructure, the top plate, the bottom plate and the side wall constitute the main body of the underground space structure, and a middle 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 freely translates in the slot, and the two 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, which are connected in series and parallel. The translation column, as a tuning mass, plays the role of an additional mass block in the inertia-enhancing resonant tuning mass unit, and the translation column is a tuning mass. The mass ratio of the column to the underground space structure is much larger 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 larger 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 inertial enhancement type resonant tuned mass unit in the slot of the side wall and the middle column respectively realizes the connection between the translational column and the side wall and the middle column. The tuning part is used to adjust the tuning vibration isolation frequency band of the translational column, the damping part is used for energy enhancement dissipation under the action of local resonance and vibration limitation of the translational column, and the inertial capacity part is used for enhanced vibration absorption and low-frequency resonance of the translational column based on inertial capacity mass enhancement.

[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 by prestressed strands, and the prestressed strands realize the swaying of the middle column under earthquake action. Different from the side walls fixedly connected to the top plate and the bottom plate, the prestressed strands can provide self-restoring force for the middle column that sways 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 a preferred technical solution, the prestressed strands are anchored on both sides of the contact surface between the center column and the top plate and the 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 translation column is connected to the middle column through an inertial enhancement type resonant tuned mass unit. When an external load acts on the underground space structure, the middle column swings and consumes energy. At the same time, the translation column in the middle column slot translates, driving the inertial enhancement type resonant tuned mass unit to consume nonlinear energy, controlling the seismic response of the middle column. The translation of the translation column drives the rack in the inertial capacity element to translate, and the translation of the rack drives the flywheel in the inertial capacity element to rotate, thereby realizing the enhanced inertial energy absorption and energy consumption control.

[0015] The translational column is connected to the side wall through an inertial efficiency-enhancing resonant tuned mass unit. When an external load acts on the underground space structure, the translational column in the side wall slot body translates, driving the inertial efficiency-enhancing resonant tuned mass unit to perform nonlinear energy consumption, 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 translate, and the translational movement of the rack drives the flywheel in the inertial capacity element to rotate, thereby realizing efficiency-enhancing inertial energy absorption and energy consumption control.

[0016] Furthermore, the top end or the bottom end of the translational cylinder is in 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 in the vertical direction respectively.

[0017] Furthermore, a plurality of convex rollers are arranged at the top or bottom end of the translation cylinder, and 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 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 material metal with a smooth surface.

[0024] Furthermore, the tuning part adopts a tuning spring, the damping part adopts a viscous damper, and the inertia part adopts an inertia 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 inertia elements, and parallel viscous dampers and inertia elements. 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 consumption.

[0025] As a preferred technical solution, the two ends of the parallel tuning spring and the inertia element are respectively fixedly connected horizontally to one side of the translational column and one side surface of the slot body, and the two ends of the parallel viscous damper and the inertia element are respectively fixedly connected horizontally to the other side of the translational 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 of an inertial enhancement type resonant tuned mass, which uses the underground space structure to isolate 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 consume 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 earthquake, the translation column in the slot of the middle column will move relative to the middle column. The translation column will move in translation, and the rack in the inertia element will convert the translation into rotation, thus realizing translation-rotation coupling. The translation column will drive the inertia enhancement resonant tuned mass unit to induce translation-rotation coupling and produce geometric nonlinear inertia enhancement energy consumption, so as to realize vibration isolation and vibration energy absorption-dissipation based on low-frequency periodic substructure, so as to reduce the seismic response of the middle column.

[0029] In addition, inertial efficiency-enhanced 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 energy absorption and self-reset under the action of multiple levels of earthquake motion. The self-reset and 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 efficiency-enhancing resonant tuned mass periodic substructure in the slot body of the middle column; the energy absorption and energy dissipation of the side wall are realized by using the inertial efficiency-enhancing resonant tuned mass periodic substructure arranged 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 efficiency 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 capacity part-tuning part connected in parallel, a translation column, and an inertia capacity part-damping part connected in parallel in series, thus constructing a complete vibration energy input control path based on an inertia capacity-tuning mass-inertia capacity mass chain; the inertia-enhancing resonant tuned mass periodic substructure solves the existing vibration control problems. The inherent contradiction between the high seismic isolation (vibration) efficiency and the large deformation of the seismic isolation bearing in the device, as well as the low seismic redundancy of the seismic isolation system; the internal tuning mass of the inertial enhancement type resonant tuned mass periodic substructure belongs to the central column and side wall of the original seismic underground space structure, which provides a new idea for introducing large mass tuned vibration absorption technology into the underground space structure; its translational and rotational coupling effects can produce significant nonlinear inertia coefficients, and 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 proposed underground space structure with slots 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 original vertical bearing capacity of the 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 It is a schematic diagram of the front cross-sectional structure of the underground space structure of the inertial enhancement type resonant tuning mass in an embodiment of the present invention;

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

[0036] Figure 3It is a schematic diagram of the front cross-sectional structure of the inertial enhancement type resonant tuned mass periodic substructure in an embodiment of the present invention.

[0037] Description of the markings in the figure:

[0038] 1—top plate, 2—bottom plate, 3—side wall, 4—middle column, 5—inertia enhancement type resonant tuned mass periodic substructure, 6—prestressed stranded wire, 7—anchor bolt, 8—pad, 9—translational column, 10—convex roller, 11—tuning spring, 12—viscous damper, 13—inertia capacity element. DETAILED DESCRIPTION

[0039] The present invention is described in detail below in conjunction with specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a 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", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are used to describe common objects, which only refer to different instances of the same object, and are not intended to imply that the objects described in this way must adopt a given order, whether in time, space, order or any other way.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example:

[0043] An underground space structure of 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, a side wall 3, a middle column 4 and an inertial enhancement type resonant tuned mass periodic substructure 5. The top plate 1, the bottom plate 2 and the side wall 3 constitute the main body of the underground space structure, and the middle column 4 is arranged between the top plate 1 and the bottom plate 2;

[0044] A slot is provided in each of the side wall 3 and the center column 4, and 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 freely translates in the center of the slot, and the two 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-enhancing resonant tuning mass unit, which are connected in series and parallel. The translation column 9, as a tuning mass, 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 the traditional tuned mass unit, which can effectively control the seismic response of the underground space structure. The translation column 9 maintains a large column cross-section and can bear the force transmitted by the top plate 1 like a traditional column, that is, maintain the vertical bearing capacity. The inertial enhancement type resonant tuned mass unit in the slot of the side wall 3 and the middle column 4 respectively realizes the connection between the translation column 9 and the side wall 3 and the middle column 4. The tuning part is used to adjust the tuning vibration isolation frequency band of the translation column 9, the damping part is used for energy enhancement dissipation under the action of local resonance and vibration limitation of the translation column 9, and the inertial capacity part is used for enhanced vibration absorption and low-frequency resonance of the translation column 9 based on the inertial capacity mass enhancement.

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

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

[0047] The material of the prestressed stranded wire 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 strand 6 is anchored to both sides of the contact surface between the center column 4 and the top plate 1 and the 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 strand 6.

[0049] The translation column 9 is connected to the middle column 4 through the inertial enhancement type resonant tuned mass unit. When the external load acts on the underground space structure, the middle column 4 swings and consumes energy. At the same time, the translation column 9 at the center of the slot of the middle column 4 translates, driving the inertial enhancement type resonant tuned mass unit to consume nonlinear energy, controlling the seismic response of the middle column 4. The translation of the translation column 9 drives the rack in the inertial capacity element 13 to translate, and the translation of the rack drives the flywheel in the inertial capacity element 13 to rotate, realizing the enhanced inertial energy absorption and energy consumption control.

[0050] The translation column 9 is connected to the side wall 3 through the inertial enhancement type resonant tuned mass unit. When the external load acts on the underground space structure, the translation column 9 at the center of the trough of the side wall 3 translates, driving the inertial enhancement type resonant tuned mass unit to perform nonlinear energy consumption, thereby controlling the seismic response of the side wall 3. The translation of the translation column 9 drives the rack in the inertial capacity element 13 to translate, and the translation of the rack drives the flywheel in the inertial capacity element 13 to rotate, thereby realizing the enhanced inertial energy absorption and energy consumption control.

[0051] The top or bottom end of the translational cylinder 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;

[0052] A plurality of convex rollers 10 are arranged at the top and bottom 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 in this embodiment, steel is preferred;

[0054] The plane of the convex roller 10 contacts the top or bottom 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. 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] The top and bottom surfaces of the trough body, the bottom surface of the top plate 1 and the top surface of the bottom plate 2 are all provided with pads 8, and the convex surface of the convex roller 10 contacts the pads 8, so that the pads 8 achieve the purpose of bearing pressure 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 translation cylinder 9 are connected to the two side surfaces of the tank body through the parallel tuning spring 11 and the inertia element 13, and the parallel viscous damper 12 and the inertia element 13. 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;

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

[0059] An inertial enhancement type resonant tuned mass seismic isolation method uses the above-mentioned underground space structure to isolate the underground space, and the specific steps are as follows:

[0060] Under the action of an earthquake, the middle column 4 of the underground space structure may swing and consume energy; after the earthquake, the middle 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 translation column 9 in the slot of the middle column 4 will move relative to the middle column 4. The translation column 9 moves in translation, and the rack in the inertia element 13 converts the translation into rotation, thereby realizing translation-rotation coupling. Thus, the translation column 9 drives the inertia enhancement type resonant tuned mass unit to induce translation-rotation coupling to produce geometrically nonlinear inertia enhancement energy consumption, thereby realizing vibration isolation and vibration energy absorption-dissipation based on a low-frequency periodic substructure, thereby reducing the seismic response of the middle column 4.

[0062] In addition, an inertial efficiency-enhanced resonant tuned mass unit and a translational column 9 are also installed in the slot 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 to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and 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 of inertial enhancement type resonant tuned mass, characterized in that: The underground space structure comprises a top plate (1), a bottom plate (2), a side wall (3), a middle column (4) and an inertial enhancement type resonant tuned mass periodic substructure (5); the top plate (1), the bottom plate (2) and the side wall (3) constitute the main body of the underground space structure; the middle 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 enhancement type resonant tuning mass periodic substructure (5) is arranged in the slot, wherein the inertia enhancement type resonant tuning mass periodic substructure (5) comprises a translation column (9) and an inertia enhancement type resonant tuning mass unit, wherein the translation column (9) freely translates in the slot, and two sides of the translation column (9) are connected to two side surfaces of the slot through the inertia enhancement type resonant tuning mass unit, wherein the inertia enhancement type resonant tuning mass unit is selected from one or more of a tuning part, a damping part, and an inertia capacity part, and connected in series and parallel.

2. The underground space structure of inertial enhancement type resonant 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 enhancement type resonant 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 enhancement type resonant tuned mass according to claim 3 is 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 enhancement type resonant 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 material metal.

6. The underground space structure of inertial enhancement type resonant 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 enhancement type resonant 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 enhancement type resonant 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 synergy type resonant 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 inertia part adopts an inertia element (13). The two sides of the translational cylinder (9) are respectively connected to the two side surfaces of the slot body through the parallel tuning spring (11) and the inertia element (13), and the parallel viscous damper (12) and the inertia element (13).

10. A seismic isolation method of inertial enhancement type resonant tuned mass, characterized in that: The method uses the underground space structure according to any one of claims 1 to 9 to isolate the underground space from earthquakes, 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, 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), and the translation column (9) moves in translation. The translation is converted into rotation through the rack in the inertia capacity 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 a 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).

Images