CN112240062B - Three-dimensional shock insulation structure system - Google Patents
Three-dimensional shock insulation structure system Download PDFInfo
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- CN112240062B CN112240062B CN202010965846.4A CN202010965846A CN112240062B CN 112240062 B CN112240062 B CN 112240062B CN 202010965846 A CN202010965846 A CN 202010965846A CN 112240062 B CN112240062 B CN 112240062B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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Abstract
The invention discloses a three-dimensional shock insulation structure system which comprises a foundation, wherein a plurality of horizontal shock insulation devices, vertical shock insulation devices, a rigid floor slab and an upper structure are sequentially and fixedly stacked on the foundation; and a plurality of lateral baffles are fixedly arranged on the basis of isolating the periphery of the horizontal shock isolation devices and are connected with the rigid floor slab through negative rigidity connecting devices. The three-dimensional shock insulation structure system provided by the invention has the self-adaptive capacity of three-dimensional six-direction rigidity through the three-dimensional shock insulation system, so that the three-dimensional shock insulation structure system has the capacity of isolating three-dimensional three-direction subway vibration and three-dimensional six-direction earthquake vibration, and the comfort performance of a building under the subway vibration action and the earthquake-proof safety of the building under the earthquake action are ensured.
Description
Technical Field
The invention relates to a three-dimensional shock insulation structure system which is mainly used for subway shock insulation and earthquake shock insulation of a building structure and belongs to the technical field of buildings.
Background
Along with the rapid development of economy in China, the traffic problem is increasingly highlighted, and subways become important means for solving the traffic problem due to the advantages of large transportation volume, high speed, small occupied area, safety, reliability and the like; but the environmental vibration problem generated by the subway train operation is increasingly prominent, which is mainly reflected in that the subway train operation has non-negligible influence on adjacent buildings, underground pipelines, precise instruments, equipment and the like. In order to reduce the negative influence of subway traffic vibration, various measures have been taken in academia and engineering circles to reduce vibration and noise caused by subway traffic, and the main measures include setting three-dimensional vibration isolation devices, floating floor slabs, vibration reduction ditches, vibration reduction road slabs, row holes, row piles and the like. Among a plurality of vibration and noise reduction measures, the three-dimensional vibration isolation device arranged at the bottom of the building is an effective one, and researches show that the three-dimensional vibration isolation device can effectively improve the living comfort of the building and ensure the normal operation of important instruments and equipment in the building.
Earthquakes are a natural disaster which puzzles human beings, and in order to reduce life and property loss caused by earthquakes, human beings struggle with the earthquakes for a long time. With the progress of scientific technology and engineering technology, the theory and practice of seismic engineering are developed rapidly. A plurality of researches show that the three-dimensional shock insulation technology can effectively improve the shock resistance of the building structure, reduce the damage of the building structure under the action of an earthquake as much as possible and improve the shock resistance safety of the building.
The application of the three-dimensional shock insulation technology in buildings along the subway aims at improving the living comfort and the shock resistance safety of the buildings. At present, the application of the three-dimensional shock isolation device in the building structure along the subway faces the following challenges: the three-dimensional shock isolation device is difficult to have the capacity of isolating subway vibration and earthquake vibration at the same time; under the action of earthquake, the further improvement of the anti-torsion/anti-swing/anti-overturning capability of the three-dimensional shock isolation structure is still a bottleneck restricting the development of the three-dimensional shock isolation technology. (three-dimensional subway vibration comprises 2 horizontal components and 1 vertical component; three-dimensional six-dimensional earthquake vibration comprises 2 horizontal components, 1 vertical component, 2 swinging components and 1 torsion component.)
Aiming at the challenges, the three-dimensional shock isolation device and the structure system thereof are provided, wherein the three-dimensional shock isolation device has simple construction measures and has the capability of isolating three-dimensional subway vibration and three-dimensional six-dimensional earthquake vibration, the anti-torsion/anti-swing/anti-overturning capability of the three-dimensional shock isolation device is obviously improved, and the three-dimensional shock isolation device has important theoretical and practical significance.
Disclosure of Invention
The invention aims to provide a three-dimensional shock insulation structure system which can meet the normal use requirement of a building and has the capability of isolating three-dimensional subway vibration and three-dimensional six-dimensional earthquake vibration aiming at the practical requirements of subway shock insulation and earthquake shock insulation of a building structure.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A three-dimensional shock insulation structure system comprises a foundation 7, wherein a plurality of horizontal shock insulation devices 4, vertical shock insulation devices 3, a rigid floor 5 and an upper structure 8 are sequentially and fixedly stacked on the foundation 7; and a plurality of lateral baffles 6 are fixedly arranged on a foundation 7 for isolating the periphery of the horizontal shock isolation devices 4, and the lateral baffles 6 are connected with the rigid floor 5 through negative rigidity connecting devices 2.
Further preferably, the number and arrangement of the horizontal seismic isolation devices 4 correspond to the number and arrangement of the pillars provided in the superstructure 8.
Further preferably, the number and arrangement of the vertical seismic isolation devices 3 and the number and arrangement of the horizontal seismic isolation devices 4 are the same.
Preferably, the negative stiffness connecting device 2 comprises a belleville spring 9, an outer sleeve 10, an inner guide rod 11, a middle baffle 12, a universal hinge 13 and an end flange 14, the outer sleeve 10 is a cylinder with one end connected with the end flange 14 provided with a central hole and the other end connected with the end flange 14 smaller than a small cylinder of the outer sleeve 10, the inner guide rod 11 is inserted in the outer sleeve 10, and the inner guide rod 11 is sequentially sleeved with the belleville spring 9 and the middle baffle 12; an inner guide rod 11 at one end of the outer sleeve 10 is connected with the lateral baffle 6 through the universal hinge 13, and a small cylinder at the other end is connected with the rigid floor 5 through the universal hinge 13.
Further preferably, a sealing ring 15 is further disposed between the end flange 14 and the inner guide bar 11.
Further preferably, the outer sleeve 10 is also filled with silicone oil 16.
The disk springs 9 are arranged in a pairwise mirror image manner.
Preferably, the vertical shock insulation device 3 is a disk spring vertical shock insulation support or an air spring shock insulation support; the horizontal shock isolation device 4 is a conventional lead core rubber support or a high-damping rubber support.
Further preferably, the lateral baffle-plates 6 and the rigid floor-slab 5 are both made of steel plates or concrete plates.
The superstructure 8 is a frame structure, a shear wall structure or a frame-shear wall structure; the foundation 7 is a raft foundation.
Compared with the traditional three-dimensional shock insulation structure system, the three-dimensional shock insulation structure system has the advantages and beneficial effects that:
(1) the three-dimensional shock insulation structure system has the three-dimensional six-direction rigidity self-adaption characteristic, namely the structure system can realize rigidity self-adaption to a certain degree in six directions, and the six directions comprise 2 horizontal directions, 1 vertical direction, 2 swinging directions and 1 twisting direction of structure movement.
(2) Under the working condition of normal use load, the three-dimensional shock insulation structure system has enough rigidity in the horizontal/vertical/swinging/twisting directions, so that the three-dimensional shock insulation structure can bear the normal use load of the structure without large deformation.
(3) When the dynamic load is small (subway vibration, wind vibration or earthquake is met more), the negative stiffness connecting device provides negative stiffness, and the three-dimensional shock insulation structural system provided by the invention has small stiffness in the horizontal/vertical/swinging/torsion directions, so that the novel three-dimensional shock insulation structure can isolate subway vibration and earthquake vibration in a wide frequency range, and is greatly superior to the traditional three-dimensional shock insulation/vibration structural system.
(4) When the dynamic load is large (rare earthquakes), the negative stiffness connecting device provides positive stiffness, the three-dimensional shock isolation structure system has large stiffness in the horizontal/vertical/swinging/torsion directions, and the anti-torsion/anti-swinging/anti-overturning capacity is correspondingly good, so that the overall displacement of the three-dimensional shock isolation structure under the rare earthquakes is reduced.
(5) The horizontal shock insulation support, the vertical shock insulation support and the negative stiffness connecting device in the three-dimensional shock insulation structure system can consume input energy of earthquake vibration and input energy of subway vibration.
(6) Under the action of an external load, when the negative stiffness connecting device deforms, the silicone oil flows in the outer sleeve to provide certain viscous damping energy consumption; in addition, mutual friction occurs between adjacent disk springs, and certain friction damping energy consumption is provided.
According to the three-dimensional shock insulation structure system, the rigidity and the damping of the horizontal shock insulation support are mainly determined by the mass and the rigidity of the upper structure and the frequency spectrum characteristic of the horizontal component of seismic motion, and the rigidity and the damping of the vertical shock insulation support are mainly determined by the mass and the rigidity of the upper structure and the frequency spectrum characteristic of the vertical component of the seismic motion. The pre-pressure, the compression rigidity and the damping of the negative rigidity connecting device are mainly determined by the frequency spectrum characteristics of horizontal and vertical subway vibration. The tensile stiffness and damping of the negative stiffness connection device are mainly determined by the spectral characteristics of the sway and torsion components of seismic motion.
Description of the drawings:
FIG. 1 is a schematic structural view of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural diagram of a negative stiffness connection device according to an embodiment of the present invention;
in the figure: 2 is negative rigidity connecting device, 3 is vertical shock isolation device, 4 is horizontal shock isolation device, 5 is rigid floor, 6 is lateral baffle, 7 is base, 8 is superstructure, 9 is belleville spring, 10 is outer sleeve, 11 is inner guide rod, 12 is baffle, 13 is universal hinge, 14 is end flange, 15 is sealing washer, 16 is silicone oil.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, 2 and 3, the three-dimensional seismic isolation structure system of the invention comprises a foundation 7, wherein a plurality of horizontal seismic isolation devices 4, vertical seismic isolation devices 3, a rigid floor 5 and an upper structure 8 are sequentially and fixedly stacked on the foundation 7; and a plurality of lateral baffles 6 are fixedly arranged on a foundation 7 for isolating the periphery of the horizontal shock isolation devices 4, and the lateral baffles 6 are connected with the rigid floor 5 through negative rigidity connecting devices 2.
The number and arrangement of the horizontal shock insulation devices 4 correspond to the number and arrangement of the columns arranged on the upper structure 8.
The number and arrangement mode of the vertical shock insulation devices 3 are the same as those of the horizontal shock insulation devices 4.
The negative stiffness connecting device 2 comprises a belleville spring 9, an outer sleeve 10, an inner guide rod 11, a middle baffle plate 12, a universal hinge 13 and an end flange 14, wherein the outer sleeve 10 is a cylinder body with one end connected with the end flange 14 provided with a central hole and the other end connected with the end flange 14 smaller than a small cylinder of the outer sleeve 10, the inner guide rod 11 is inserted into the outer sleeve 10, and the inner guide rod 11 is sequentially sleeved with the belleville spring 9 and the middle baffle plate 12; an inner guide rod 11 at one end of the outer sleeve 10 is connected with the lateral baffle 6 through the universal hinge 13, and a small cylinder at the other end is connected with the rigid floor 5 through the universal hinge 13.
A sealing ring 15 is further arranged between the end flange 14 and the inner guide rod 11. The outer sleeve 10 is also filled with silicone oil 16. The disk springs 9 are arranged in a pairwise mirror image manner.
The vertical shock insulation device 3 is a disc spring vertical shock insulation support; the horizontal shock isolation device 4 is a high-damping rubber support.
And the lateral baffle 6 and the rigid floor 5 are both made of concrete plates.
The upper structure 8 is a frame structure; the foundation 7 is a raft foundation.
The action principle is as follows:
the horizontal shock insulation device 4 in the three-dimensional shock insulation system 1 mainly isolates subway vibration and earthquake vibration in the horizontal direction, and the vertical shock insulation device 3 mainly isolates vertical subway vibration and earthquake vibration. Negative stiffness connection means 2 provide negative stiffness when in compression and positive stiffness when negative stiffness connection means 2 are in tension. When the three-dimensional shock insulation system 1 is in an initial state, the negative stiffness connecting device 2 is under the action of pre-pressing force and in a pressed state, so that negative stiffness is provided, the natural vibration frequency of the structure is reduced, and subway vibration and earthquake vibration in a wider frequency range can be isolated. When the three-dimensional shock insulation system 1 is subjected to a large load, the compressive pre-pressure of the negative stiffness connecting device 2 is released and is in a tension state, and positive stiffness is provided, so that the displacement of the structure under a limit load (strong shock) can be limited.
The negative stiffness connection means 2 has a good load bearing capacity in tension/compression and energy dissipation capacity. When the negative rate linkage 2 is in tension/compression limit, the compressed belleville springs 9 in the negative rate linkage 2 are in a flattened condition, preventing greater deformation. Under the action of an external load, when the negative stiffness connecting device deforms, the silicone oil flows in the outer sleeve to provide certain viscous damping energy consumption; in addition, mutual friction occurs between adjacent disk springs, and certain friction damping energy consumption is provided.
The three-dimensional shock insulation structure system has the three-dimensional six-direction rigidity self-adaption characteristic, namely the structure system can realize rigidity self-adaption to a certain degree in six directions: (1) under the working condition of normal use load, the three-dimensional shock insulation structure system has enough rigidity in the horizontal/vertical/swinging/twisting directions, so that the three-dimensional shock insulation structure can bear the normal use load of the structure without large deformation. (2) When the dynamic load is small (subway vibration, wind vibration or multiple earthquakes), the negative stiffness connecting device 2 provides negative stiffness, and the stiffness of the three-dimensional shock insulation structure system in the horizontal/vertical/swinging/torsion directions is small, so that the three-dimensional shock insulation structure can isolate subway vibration and earthquake vibration in a wide frequency range. (3) When the dynamic load is large (rare earthquakes), the negative stiffness connecting device 2 provides positive stiffness, the three-dimensional shock isolation structure system has large stiffness in the horizontal/vertical/swinging/twisting directions, and the anti-torsion/anti-swinging/anti-overturning capacity of the three-dimensional shock isolation structure system is correspondingly good, so that the overall displacement of the three-dimensional shock isolation structure under the rare earthquakes is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and all modifications, equivalents and improvements that are within the spirit and principle of the present invention are deemed to be within the scope of the present invention.
Claims (6)
1. A three-dimensional seismic isolation structure comprising a foundation (7), characterized in that: a plurality of horizontal shock insulation devices (4), vertical shock insulation devices (3), a rigid floor slab (5) and an upper structure (8) are sequentially and fixedly stacked on the foundation (7); a plurality of lateral baffles (6) are fixedly arranged on a foundation (7) for isolating the periphery of the horizontal shock insulation devices (4), and the lateral baffles (6) are connected with the rigid floor (5) through negative rigidity connecting devices (2);
the number and the arrangement mode of the horizontal shock insulation devices (4) correspond to the number and the arrangement mode of the columns arranged on the upper structure (8);
the number and the arrangement mode of the vertical shock insulation devices (3) are the same as those of the horizontal shock insulation devices (4);
the negative stiffness connecting device (2) is composed of a disc spring (9), an outer sleeve (10), an inner guide rod (11), a middle baffle (12), a universal hinge (13) and an end flange (14), wherein the outer sleeve (10) is a cylinder body, one end of the cylinder body is connected with the end flange (14) provided with a central hole, the other end of the cylinder body is connected with the end flange (14) smaller than a small cylinder of the outer sleeve (10), the inner guide rod (11) is inserted into the outer sleeve (10), and the inner guide rod (11) is sequentially sleeved with the disc spring (9) and the middle baffle (12) which are arranged in a pairwise mirror image; an inner guide rod (11) at one end of the outer sleeve (10) is connected with the lateral baffle (6) through the universal hinge (13), and a small cylinder at the other end is connected with the rigid floor (5) through the universal hinge (13).
2. A three-dimensional seismic isolation structure as in claim 1 wherein: and a sealing ring (15) is also arranged between the end flange (14) and the inner guide rod (11).
3. A three-dimensional seismic isolation structure as in claim 1 wherein: silicone oil (16) is filled into the outer sleeve (10).
4. A three-dimensional seismic isolation structure as in claim 1 wherein: the vertical shock insulation device (3) is a disc spring vertical shock insulation support or an air spring shock insulation support; the horizontal shock isolation device (4) is a conventional lead core rubber support or a high-damping rubber support.
5. A three-dimensional seismic isolation structure as in claim 1 wherein: and the lateral baffle (6) and the rigid floor slab (5) are both made of steel plates or concrete plates.
6. A three-dimensional seismic isolation structure as in claim 1 wherein: the superstructure (8) is a frame structure, a shear wall structure or a frame-shear wall structure; the foundation (7) is a raft foundation.
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| CN202010965846.4A CN112240062B (en) | 2020-09-15 | 2020-09-15 | Three-dimensional shock insulation structure system |
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| CN202010965846.4A CN112240062B (en) | 2020-09-15 | 2020-09-15 | Three-dimensional shock insulation structure system |
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| CN113152708A (en) * | 2021-02-10 | 2021-07-23 | 国机集团科学技术研究院有限公司 | Vibration and earthquake double-control strategy mainly based on horizontal vibration resistance |
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| CN113404166B (en) * | 2021-06-18 | 2022-04-12 | 衡水震泰隔震器材有限公司 | Three-dimensional shock insulation support |
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| CN114508179B (en) * | 2022-02-25 | 2022-09-09 | 广州大学 | Three-dimensional shock insulation layer |
| CN114776761B (en) * | 2022-03-31 | 2023-04-25 | 西北工业大学 | Design method of structure and function integrated broadband vibration isolator |
| CN114922304B (en) * | 2022-04-27 | 2023-09-29 | 中国人民解放军火箭军工程大学 | Cylindrical equipment three-dimensional shock insulation transportation/storage system based on negative rigidity |
| CN117846145A (en) * | 2024-01-29 | 2024-04-09 | 广州大学 | Tensile pulling three-dimensional vibration dual-control decoupling system with quasi-zero rigidity |
| CN118007831A (en) * | 2024-03-14 | 2024-05-10 | 山东大学 | Composite spring vibration reduction and isolation floor slab structure and method |
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