CN110158803B - Multidirectional damping and pulling-out resisting device of vibration isolation support and vibration isolation and damping method thereof - Google Patents
Multidirectional damping and pulling-out resisting device of vibration isolation support and vibration isolation and damping method thereof Download PDFInfo
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- CN110158803B CN110158803B CN201910379053.1A CN201910379053A CN110158803B CN 110158803 B CN110158803 B CN 110158803B CN 201910379053 A CN201910379053 A CN 201910379053A CN 110158803 B CN110158803 B CN 110158803B
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- 238000002955 isolation Methods 0.000 title claims abstract description 47
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 171
- 239000010959 steel Substances 0.000 claims abstract description 171
- 230000035939 shock Effects 0.000 claims abstract description 88
- 238000009413 insulation Methods 0.000 claims abstract description 65
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- 230000009471 action Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 3
- 239000003190 viscoelastic substance Substances 0.000 claims description 3
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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 multidirectional damping and tensile pulling device of a shock insulation support and a shock insulation method thereof. The device is arranged between the upper steel plate and the lower steel plate of the rubber shock insulation support through bolts, so that the rubber shock insulation support can realize multidimensional shock insulation and absorption functions, and larger drawing resistance is provided for the rubber shock insulation support, so that the overturning of a building structure is effectively prevented. Meanwhile, the device has great deformability, can deform along with the horizontal displacement of the rubber support, and cannot influence the shock isolation and absorption performance in the horizontal direction. In addition, the invention has the characteristic of convenient installation on the rubber vibration isolation support, and is easy to maintain and replace in the long-term use process and after strong vibration.
Description
Technical Field
The invention relates to a vibration isolation technology, in particular to a multidirectional damping and pulling-out resisting device of a vibration isolation support and a vibration isolation and damping method thereof. Technical Field
Various harmful vibrations such as earthquake can certainly produce huge harm to human production and life, one of the serious harm is that the building structure can be damaged or even collapse, and serious loss is caused to the life and property safety of people. The basic vibration isolation and damping technology is a vibration control method which reduces structural vibration reaction and has low cost, high technical level and strong practical capability. The rubber shock insulation support is the most mature type developed in the current shock insulation and absorption technology, has wide application in the building shock insulation and absorption field, and forms a set of standardized design specifications.
At present, the function of the rubber shock insulation support is still greatly limited, and the defect of the rubber shock insulation support is that: the shock insulation performance and the capability of bearing tensile force are poor in the vertical direction. However, earthquakes or various types of vibrations are not only present in the horizontal direction, but also in the vertical direction. Vertical earthquake or vibration can produce serious destruction to building structure on the one hand, on the other hand can make building structure receive great lift-off effect to pull out the rubber shock insulation support. In addition, the building structure is prone to toppling under a combination of horizontal and vertical earthquakes or vibrations, which can also cause the rubber shock mounts to pull apart.
The multidimensional shock isolation and absorption technology is a control method capable of isolating and reducing horizontal and vertical earthquakes or vibration simultaneously. The prior multidimensional shock isolation and absorption device mostly adopts a combination of a rubber shock isolation support and a vertical shock isolation and absorption device. This increases the complexity of the shock-insulating support, increases the manufacturing cost, and also, as the combined shock-insulating support increases in height and decreases in vertical stiffness, it results in a decrease in overall stability, further increasing the possibility of overturning the building structure.
The anti-drawing device is arranged in the rubber shock insulation support, so that the tensile property of the support can be improved to a great extent, and the overturning effect of a building structure is resisted. Besides the vertical displacement, the horizontal displacement of the support also can deform the pull-out resistance device. However, due to the limitation of the height of the rubber shock-insulation support, the deformation capacity of the traditional pulling-resistant device is limited, and the deformation limit can be reached under the action of small earthquake or vibration, so that the horizontal displacement of the rubber shock-insulation support is restrained, and the rubber shock-insulation support can be damaged, and therefore, the rubber shock-insulation support is difficult to cooperate with the rubber support to generate a better control effect under the vibration of large amplitude.
In order to solve the problems, a multidirectional damping and pulling-out resistant device of a shock isolation support is required to be designed, on one hand, multidirectional damping performance is provided for rubber damping, on the other hand, pulling-out resistant capacity of the rubber shock isolation support is increased when a vertical earthquake or vibration action and a building structure overturn are performed, meanwhile, the horizontal deformation performance of the rubber shock isolation support is not influenced, the control effect of the shock isolation support is fully exerted, and damage of the building structure under the earthquake or vibration action is avoided.
The invention comprises the following steps: the invention solves the technical problem of providing a multidirectional damping and pulling-resistant device of a shock insulation support, which can provide multidirectional damping performance for the rubber shock insulation support by installing the device in the rubber shock insulation support, and can enable the rubber shock insulation support to bear great tensile force in the vertical direction so as to prevent the overturning of a building structure. Meanwhile, the device has great deformability, and can not influence the shock isolation and absorption performance of the rubber shock isolation support in the horizontal direction. In addition, the device also has the characteristic of convenient installation on the rubber shock insulation support, and is easy to maintain and replace in the long-term use process and after strong earthquake.
In order to solve the technical problems, the invention adopts the following technical means: a multidirectional shock absorbing and pulling resistant device for a shock isolation support, comprising: the rubber shock insulation support, its characterized in that, screw holes are offered respectively to the corresponding position of rubber shock insulation support's last steel sheet and lower steel sheet, and multiunit multi-direction power consumption unit passes through the bolt to be installed between last steel sheet and lower steel sheet, and around the core shock pad symmetrical arrangement of rubber shock insulation support center department, and every multi-direction power consumption unit of group all includes: the device comprises an outer steel cylinder, an upper end plate arranged at the upper end of the outer steel cylinder, a lower end plate arranged at the lower end of the outer steel cylinder, and two viscoelastic energy dissipation units which are arranged in the inner cavity of the outer steel cylinder and are symmetrically arranged up and down along the axial direction of the outer steel cylinder, wherein the two viscoelastic energy dissipation units are a first viscoelastic energy dissipation unit and a second viscoelastic energy dissipation unit respectively;
The first steel wire rope, its one end passes through first biography power component drives first viscoelasticity power consumption unit compresses the power consumption in outer steel cylinder up end plate direction, first biography power component includes: the device comprises a first external force transmission steel plate, a first force transmission hollow rod, a first internal force transmission steel plate and a first spring, wherein the first external force transmission steel plate is arranged at the center of an inner cavity of the outer steel cylinder, the upper surface of the first external force transmission steel plate is in close contact with the first viscoelastic energy dissipation unit, one end of the first force transmission hollow rod is closed, the other end of the first force transmission hollow rod is open, and the open end of the first force transmission hollow rod is fixedly connected with the first external force transmission steel plate after passing through the axis of the first viscoelastic energy dissipation unit;
one end of the first steel wire rope extends into the hollow inner cavity of the first force transmission hollow rod and is fixedly connected with the first inner force transmission steel plate, and the other end extends out of the outer steel cylinder and is hinged with a bolt;
The first spring is arranged in the first force transmission hollow rod cavity and positioned between the first inner force transmission steel plate and the closed end of the first force transmission hollow rod;
And one end of the second steel wire rope drives the second viscoelastic energy dissipation unit to compress and dissipate energy in the direction of the lower end plate in the outer steel cylinder through a second force transmission component, and the second force transmission component comprises: the device comprises a second outer force transmission steel plate, a second force transmission hollow rod, a second inner force transmission steel plate and a second spring, wherein the second outer force transmission steel plate is arranged at the center of an inner cavity of an outer steel cylinder of the device, the lower surface of the second outer force transmission steel plate is in close contact with a second viscoelastic energy dissipation unit, one end of the second force transmission steel plate is closed, the other end of the second force transmission steel plate is open, and the open end of the second force transmission steel plate is fixedly connected with the second outer force transmission steel plate after passing through the axis of the second viscoelastic energy dissipation unit;
one end of the second steel wire rope extends into the hollow inner cavity of the second force transmission hollow rod and is fixedly connected with the second inner force transmission steel plate, and the other end extends out of the outer steel cylinder and is hinged with a bolt;
The second spring is arranged in the second force transmission hollow rod cavity and is positioned between the second inner force transmission steel plate and the closed end of the second force transmission hollow rod.
The first viscoelastic energy dissipation unit and the second viscoelastic energy dissipation unit are made of high-dissipation viscoelastic materials and are cylindrical with a hole in the center.
The center of the closed end of the force transmission hollow rod is provided with a pore canal for the steel wire rope to pass through, the outer surface of the other end of the force transmission hollow rod is provided with threads, the spring is arranged in the inner cavity of the force transmission hollow rod, and the steel wire rope passes through the pore canal of the closed end of the force transmission hollow rod and the middle of the spring and is connected with the inner force transmission steel plate; the inner force transmission steel plate is a cylinder with a hole in the center, is positioned in the inner cavity of the force transmission hollow rod and is contacted with the spring, and is used for compressing the spring; the inner force transmission steel plate is provided with two diameters of pore canal along the thickness, wherein the steel wire rope is provided with an enlarged end at the large diameter pore canal after passing through the small diameter pore canal, thereby realizing the fixed connection with the inner force transmission steel plate.
The spring is a metal spiral spring or a metal belleville spring.
The center of the upper end plate and the center of the lower end plate are respectively provided with an end plate center hole for the passing of the force transmission hollow rod, and the force transmission hollow rod is in clearance fit with the end plate center holes.
The outer force transmission steel plate is in sliding connection with the inner wall of the outer steel cylinder; the inner force transmission steel plate is in sliding connection with the inner wall of the force transmission hollow rod.
A steel wire rope hole for a steel wire rope to pass through is formed in the center of the upper closed end of the force transmission hollow rod, and a rubber ring is arranged between the inner wall of the steel wire rope hole and the steel wire rope; threaded connection or welding is adopted between the upper end plate and the outer steel cylinder, and between the lower end plate and the outer steel cylinder.
A vibration isolation method of a multidirectional vibration absorption and pulling resistance device based on a vibration isolation support is characterized in that threaded holes are formed in four corners of the rubber vibration isolation support, a plurality of groups of multidirectional energy consumption units are installed between an upper steel plate and a lower steel plate through bolts, multidirectional vibration absorption performance and vertical pulling resistance are provided for the rubber vibration isolation support, when horizontal earthquake or vibration occurs, the vibration isolation support undergoes horizontal reciprocating shear deformation, a core rubber vibration isolation pad deforms to produce a vibration isolation effect after being subjected to shear force, meanwhile, as the deformation of the core rubber vibration isolation pad increases, the device tilts to enable steel wire ropes in the multidirectional energy consumption units to produce tensile force, and when the earthquake or vibration effect is small, the deformation or rigidity of the device is mainly provided by steel wire ropes driving inner force transmission steel plate compression springs;
When the earthquake or vibration effect is large, the spring can drive the outer force transmission steel plate to compress the viscoelastic energy consumption unit in the outer steel cylinder after large deformation, the viscoelastic energy consumption unit can consume a large amount of earthquake or vibration energy under the effect of reciprocating compression load, the vibration reduction effect in the horizontal direction is provided, and the external force and deformation born by the device can be controlled when the viscoelastic energy consumption unit provides large energy consumption capacity by adjusting the rigidity of the spring;
When the spring can not continue to compress due to the fact that the spring is greatly deformed to reach the limit, as the viscoelastic energy dissipation unit has great compression deformation capacity, the force transmission component can be driven to compress the viscoelastic energy dissipation unit continuously along with further increase of the tensile force of the steel wire rope, and the energy dissipation element can consume energy along with horizontal displacement of the core rubber shock insulation pad continuously, so that the shock absorption capacity in the horizontal direction is provided;
When earthquake or vibration in the vertical direction occurs, a large amount of earthquake energy is consumed through compression of the viscoelastic energy consumption unit, so that a vertical damping effect is realized;
When the shock insulation support is subjected to vertical lifting action generated by lateral overturning of a building, the viscoelastic energy consumption unit and the compression of the spring can generate great rigidity, so that great tensile pulling force is provided for the support, and the core rubber shock insulation pad is prevented from being pulled apart;
And the core rubber shock insulation cushion returns to the initial balance position along with the end of the earthquake or vibration, the tension provided by the steel wire rope disappears, and the deformation of the viscoelastic energy consumption unit and the spring is recovered.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: 1. the device can provide vertical working performance for the rubber shock insulation support. Under the action of vertical earthquake or vibration, the input energy can be consumed by compressing the viscoelastic energy consumption unit and the spring, and the vertical shock insulation and absorption performance is provided for the shock insulation support. Meanwhile, the viscoelastic energy consumption unit and the spring have great compression rigidity, so that the tensile pulling capacity of the shock insulation support is increased, and the overturning of the building structure is effectively prevented.
2. The device has great deformability and elastic recovery capability. The total deformation of the device is the sum of the deformation of the viscoelastic energy dissipation unit and the deformation of the spring, the deformation is provided by the spring when the vibration is small, and the deformation is provided by the viscoelastic energy dissipation unit and the compression of the spring when the vibration is large. Meanwhile, the viscoelastic energy consumption unit uses an elastic material with high energy consumption capacity, which has strong elasticity and can recover deformation after larger compression.
3. The device is applicable to traditional rubber shock insulation support. The device only needs to be installed in the middle of the rubber shock insulation support between, can provide vertical anti-drawing and multidimensional shock insulation and absorption performance for the shock insulation support, does not need to change the form of the traditional support, and is convenient to popularize in actual engineering.
4. The device can not influence the working performance of the rubber shock insulation support in the horizontal direction. Because the device self deformability is great, can work together along with the horizontal deformation of shock insulation support, make the advantage of rubber shock insulation support self obtain full play. Meanwhile, as the viscoelastic energy dissipation unit in the device can be compressed when the support is horizontally deformed, a large amount of vibration energy can be consumed, so that the vibration isolation support also has a vibration reduction effect in the horizontal direction.
5. The device is convenient to install and detach in the rubber shock insulation support. Because the device is connected with the upper steel plate and the lower steel plate of the shock insulation support by adopting high-strength bolts. During installation, only the bolts are screwed into the threaded holes of the steel plates of the shock insulation support. The device is also easy to disassemble for inspection, repair and replacement during long term use and after major earthquakes or vibrations occur. Meanwhile, the device and the rubber vibration isolation support can be produced respectively, and the device and the rubber vibration isolation support are low in processing and manufacturing cost and high in efficiency.
Drawings
FIG. 1 is a front view of a multidirectional shock absorbing and pullout preventing device for a shock insulator according to the present invention, wherein 1-1, an outer steel cylinder; 1-2-1, upper end plate; 1-2-2, lower end plate; 2-1 a first viscoelastic energy dissipating unit; 2-2, a second viscoelastic energy dissipating unit; 3-1-1, a first external force transmission steel plate; 3-1-2, a second external force transmission steel plate; 3-2-1, a first force transmission hollow rod; 3-2-2, a second force transmission hollow rod; 3-3-1, a first internal force transmission steel plate; 3-3-2, a second internal force transmission steel plate; 3-4-1, a first steel wire rope; 3-4-2, a second steel wire rope; 4-1, a first spring; 4-2, a second spring; 5-1, a first bolt; 5-2, a second bolt;
6-1, a gap between the first viscoelastic energy dissipation unit and the outer steel cylinder; 6-2, a gap between the second viscoelastic energy dissipation unit and the outer steel cylinder;
FIG. 2 is a top view of FIG. 1 of the present invention;
FIG. 3 is a block diagram of the connection of a force transfer member to a wire rope according to the present invention;
wherein, 7-1, the connecting part of the steel wire rope and the inner force transmission steel plate enlarges the end head; 7-2, expanding the end head at the joint of the steel wire rope and the bolt;
FIG. 4 is a schematic view of the connection of bolts to an upper end plate of a shock-insulating support according to the present invention;
And 9, a steel plate on the rubber vibration isolation support.
Figure 5 is a three-dimensional view of the multidirectional shock absorbing and pullout preventing device of the shock mount of the present invention,
And 8, a shock insulation support.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings and specific embodiments.
As shown in fig. 1 to 4, the multidirectional damping and pulling-resisting device of the shock insulation support comprises five parts, namely a peripheral component, a viscoelastic energy consumption unit, a force transmission component, a spring and a high-strength bolt. The viscoelastic energy consumption units and the force transmission components are symmetrically arranged in the inner cavity of the peripheral component, and the high-strength bolts are used for connecting the device with the upper steel plate and the lower steel plate of the rubber shock insulation support. Examples
The peripheral components comprise an upper end plate 1-2-1, a lower end plate 1-2-2 and an outer steel cylinder 1-1.
The viscoelastic energy consumption unit is formed by vulcanizing a viscoelastic material with higher energy consumption capacity at high temperature and high pressure, and is shaped as a cylinder with a hole in the center.
The force transfer component comprises a force transfer piston, a steel wire rope and an inner force transfer steel plate, wherein the force transfer piston consists of an outer force transfer steel plate and a force transfer hollow rod.
The spring adopts a metal spiral spring with higher rigidity.
The hollow dowel bar is a hollow cylinder, one end of the hollow dowel bar is closed, a channel high-strength steel wire rope penetrates through the center of the hollow dowel bar, and threads are machined on the outer surface of the other end of the hollow dowel bar. When in processing, the spring is arranged in the inner cavity of the force transmission hollow rod, and the steel wire rope passes through the pore canal of the closed end of the force transmission hollow rod and the middle of the spring and is connected with the inner force transmission steel plate.
The inner force transmission steel plate is a cylinder with a hole in the center, is positioned in the inner cavity of the force transmission hollow rod and is contacted with the spring, and is used for compressing the spring. The inner force transmission steel plate is processed into two diameters of pore canal along the thickness, wherein the steel wire rope is provided with an enlarged end at the large diameter pore canal after passing through the small diameter pore canal, so as to realize firm connection.
The external force transmission steel plate is a cylinder with a threaded hole in the center and is used for compressing the viscoelastic energy dissipation unit. The force transmission hollow rod can be connected with the external force transmission steel plate through external surface threads.
The viscoelastic energy dissipating unit and the force transferring member may be machined simultaneously and separately. After the processing is finished, the force transmission hollow rod of the force transmission component passes through the pore canal of the viscoelastic energy dissipation unit to be assembled, and the external force transmission steel plate is tightly contacted with the viscoelastic energy dissipation unit.
The two assembled components are symmetrically arranged in the inner cavity of the outer steel cylinder, the outer steel cylinder is a hollow cylinder, and because the viscoelastic energy dissipation unit is compressed, lateral expansion can be found, and enough gaps are reserved between the viscoelastic energy dissipation unit and the inner wall of the outer steel cylinder. Meanwhile, the inner diameter of the outer steel cylinder is 1-2 mm larger than the outer diameter of the outer force transmission steel plate, so that the force transmission piston can smoothly move in the inner cavity of the steel cylinder.
The upper end plate 1-2-1, the lower end plate 1-2-2 and the outer steel cylinder 1 are connected by screw threads, a round hole is formed in the center of the upper end plate 1-2-1 and the center of the lower end plate 1-2-2, and the diameter of the round hole is larger than the outer diameter of the force transmission hollow rod, so that smooth movement of the force transmission piston is ensured.
After the outer member and the inner part are assembled, a bolt is arranged at the other end of the steel wire rope. The center of the bolt is provided with two diameter pore canals, and the enlarged end 7-2 is arranged at the large diameter pore canal after the steel wire rope passes through the small diameter pore canal, so that the hinging of the steel wire rope and the high-strength bolt is realized.
The working method of the multidirectional damping and pulling-resisting device of the shock insulation support comprises the following steps: screw holes are respectively formed in corresponding positions of an upper steel plate and a lower steel plate of the rubber vibration isolation support, and the device is mounted on the support through high-strength bolts at the end parts, so that the rubber vibration isolation support has the function of resisting multidimensional earthquake or vibration and larger drawing resistance.
Under the action of earthquake or vibration in the horizontal direction, the rubber vibration isolation support is subjected to shearing deformation in the horizontal direction to generate a vibration isolation and absorption effect, and meanwhile, the device is inclined along with the deformation of the support to enable the steel wire rope to generate tension. When the earthquake or vibration action is small, the steel wire rope can drive the inner force transmission steel plate compression spring to generate compression deformation; when the earthquake or vibration effect is large, the spring can drive the force transmission piston to compress the viscoelastic energy consumption unit after being deformed greatly, so that a great deal of earthquake or vibration energy is consumed, and a vibration reduction effect in the horizontal direction is provided.
Because the viscoelastic energy consumption units and the springs are arranged in parallel, the maximum deformation amount generated by the device is the sum of the compression amounts of all the viscoelastic energy consumption units and all the springs, so the device has great deformation capacity, and even if the rubber vibration isolation support is subjected to great horizontal displacement under rare earthquakes or severe vibration, the deformation of the device does not reach the limit, so the vibration isolation performance of the support in the horizontal direction is not influenced.
Under the earthquake or vibration action in the vertical direction, a large amount of earthquake energy can be consumed through the compression of the viscoelasticity energy consumption unit, and the vertical damping effect is realized. Simultaneously, the compression of viscoelasticity power consumption unit and spring can produce very big rigidity, and when building structure received ascending lift-off effect, perhaps take place the side direction and topple, the device can provide very big tensile pull-out force, prevents that rubber shock insulation support from being pulled apart.
The device can be conveniently installed on the rubber vibration isolation support through the high-strength bolts, so that the rubber vibration isolation support has the function of resisting multidimensional earthquake or vibration and larger pulling resistance while fully playing the original advantages of the rubber vibration isolation support. Meanwhile, the device adopts the flexible steel wire rope to transfer force, and can generate great deformation, so that the shock insulation and absorption performance of the rubber shock insulation support in the horizontal direction cannot be influenced. In addition, the device can be detached for inspection in the long-term use process, and can be conveniently maintained and replaced after strong vibration or large vibration.
Claims (7)
1. A multidirectional shock absorbing and pulling resistant device for a shock isolation support, comprising: the rubber shock insulation support, its characterized in that, screw holes are offered respectively to the corresponding position of rubber shock insulation support's last steel sheet and lower steel sheet, and multiunit multi-direction power consumption unit passes through the bolt to be installed between last steel sheet and lower steel sheet, and around the core shock pad symmetrical arrangement of rubber shock insulation support center department, and every multi-direction power consumption unit of group all includes: the device comprises an outer steel cylinder, an upper end plate arranged at the upper end of the outer steel cylinder, a lower end plate arranged at the lower end of the outer steel cylinder, and two viscoelastic energy dissipation units which are arranged in the inner cavity of the outer steel cylinder and are symmetrically arranged up and down along the axial direction of the outer steel cylinder, wherein the two viscoelastic energy dissipation units are a first viscoelastic energy dissipation unit and a second viscoelastic energy dissipation unit respectively;
The first steel wire rope, its one end passes through first biography power component drives first viscoelasticity power consumption unit compresses the power consumption in outer steel cylinder up end plate direction, first biography power component includes: the device comprises a first external force transmission steel plate, a first force transmission hollow rod, a first internal force transmission steel plate and a first spring, wherein the first external force transmission steel plate is arranged at the center of an inner cavity of the outer steel cylinder, the upper surface of the first external force transmission steel plate is in close contact with the first viscoelastic energy dissipation unit, one end of the first force transmission hollow rod is closed, the other end of the first force transmission hollow rod is open, and the open end of the first force transmission hollow rod is fixedly connected with the first external force transmission steel plate after passing through the axis of the first viscoelastic energy dissipation unit;
one end of the first steel wire rope extends into the hollow inner cavity of the first force transmission hollow rod and is fixedly connected with the first inner force transmission steel plate, and the other end extends out of the outer steel cylinder and is hinged with a bolt;
The first spring is arranged in the first force transmission hollow rod cavity and positioned between the first inner force transmission steel plate and the closed end of the first force transmission hollow rod;
And one end of the second steel wire rope drives the second viscoelastic energy dissipation unit to compress and dissipate energy in the direction of the lower end plate in the outer steel cylinder through a second force transmission component, and the second force transmission component comprises: the device comprises a second outer force transmission steel plate, a second force transmission hollow rod, a second inner force transmission steel plate and a second spring, wherein the second outer force transmission steel plate is arranged at the center of an inner cavity of an outer steel cylinder of the device, the lower surface of the second outer force transmission steel plate is in close contact with a second viscoelastic energy dissipation unit, one end of the second force transmission steel plate is closed, the other end of the second force transmission steel plate is open, and the open end of the second force transmission steel plate is fixedly connected with the second outer force transmission steel plate after passing through the axis of the second viscoelastic energy dissipation unit;
one end of the second steel wire rope extends into the hollow inner cavity of the second force transmission hollow rod and is fixedly connected with the second inner force transmission steel plate, and the other end extends out of the outer steel cylinder and is hinged with a bolt;
The second spring is arranged in the second force transmission hollow rod cavity and is positioned between the second inner force transmission steel plate and the closed end of the second force transmission hollow rod.
2. The multi-directional damping and pullout prevention device for a shock isolation mount of claim 1, wherein the first and second viscoelastic energy dissipating units are both high-dissipation viscoelastic materials in the shape of a cylinder with a hole in the center.
3. The multidirectional damping and pulling-out preventing device for the shock insulation support according to claim 1, wherein a hole channel is formed in the center of the closed end of the force transmission hollow rod for a steel wire rope to pass through, threads are arranged on the outer surface of the other end of the force transmission hollow rod, the spring is arranged in the inner cavity of the force transmission hollow rod, and the steel wire rope passes through the hole channel of the closed end of the force transmission hollow rod and the middle of the spring and is connected with an inner force transmission steel plate;
The inner force transmission steel plate is a cylinder with a hole in the center, is positioned in the inner cavity of the force transmission hollow rod and is contacted with the spring, and is used for compressing the spring; the inner force transmission steel plate is provided with two diameters of pore canal along the thickness, wherein the steel wire rope is provided with an enlarged end at the large diameter pore canal after passing through the small diameter pore canal, thereby realizing the fixed connection with the inner force transmission steel plate.
4. The multi-directional damping and pullout prevention device for a shock isolation mount of claim 1, wherein the spring is a metal coil spring or a metal belleville spring.
5. The multi-directional damping and pulling-out preventing device for a shock-insulating support according to claim 1, wherein the centers of the upper end plate and the lower end plate are respectively provided with an end plate center hole for the passing of the force transmission hollow rod, and the force transmission hollow rod is in clearance fit with the end plate center hole.
6. The multidirectional damping and pulling-resisting device for the shock-insulating support according to claim 1, wherein the outer force-transmitting steel plate is in sliding connection with the inner wall of the outer steel cylinder;
the inner force transmission steel plate is in sliding connection with the inner wall of the force transmission hollow rod;
A steel wire rope hole for a steel wire rope to pass through is formed in the center of the upper closed end of the force transmission hollow rod, and a rubber ring is arranged between the inner wall of the steel wire rope hole and the steel wire rope;
Threaded connection or welding is adopted between the upper end plate and the outer steel cylinder, and between the lower end plate and the outer steel cylinder.
7. A vibration isolation and absorption method based on the multidirectional vibration and absorption and pulling-resistant device of the vibration isolation support according to any one of claims 1-6 is characterized in that,
The four corners of the rubber shock insulation support are provided with threaded holes, a plurality of groups of multi-directional energy consumption units are arranged between the upper steel plate and the lower steel plate through bolts, multi-directional shock absorption performance and vertical pulling resistance are provided for the rubber shock insulation support, when a horizontal earthquake or vibration occurs, the shock insulation support undergoes horizontal reciprocating shearing deformation, the core rubber shock insulation pad deforms after being subjected to the shearing force to produce a shock insulation effect, meanwhile, as the deformation of the core rubber shock insulation pad increases, the device inclines to enable a steel wire rope in the multi-directional energy consumption units to produce tensile force, and when the earthquake or vibration effect is smaller, the deformation or rigidity of the device is mainly provided by the steel wire rope driving the inner force transmission steel plate compression spring;
When the earthquake or vibration effect is large, the spring can drive the outer force transmission steel plate to compress the viscoelastic energy consumption unit in the outer steel cylinder after large deformation, the viscoelastic energy consumption unit can consume a large amount of earthquake or vibration energy under the effect of reciprocating compression load, the vibration reduction effect in the horizontal direction is provided, and the external force and deformation born by the device can be controlled when the viscoelastic energy consumption unit provides large energy consumption capacity by adjusting the rigidity of the spring;
When the spring can not continue to compress due to the fact that the spring is greatly deformed to reach the limit, as the viscoelastic energy dissipation unit has great compression deformation capacity, the force transmission component can be driven to compress the viscoelastic energy dissipation unit continuously along with further increase of the tensile force of the steel wire rope, and the energy dissipation element can consume energy along with horizontal displacement of the core rubber shock insulation pad continuously, so that the shock absorption capacity in the horizontal direction is provided;
When earthquake or vibration in the vertical direction occurs, a large amount of earthquake energy is consumed through compression of the viscoelastic energy consumption unit, so that a vertical damping effect is realized;
When the shock insulation support is subjected to vertical lifting action generated by lateral overturning of a building, the viscoelastic energy consumption unit and the compression of the spring can generate great rigidity, so that great tensile pulling force is provided for the support, and the core rubber shock insulation pad is prevented from being pulled apart;
And the core rubber shock insulation cushion returns to the initial balance position along with the end of the earthquake or vibration, the tension provided by the steel wire rope disappears, and the deformation of the viscoelastic energy consumption unit and the spring is recovered.
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| CN113026813B (en) * | 2021-03-18 | 2021-12-03 | 中国矿业大学 | Subway station center pillar structure with shock attenuation is from restoring to throne function |
| CN114108859B (en) * | 2021-11-01 | 2023-04-07 | 东南大学 | Tension-compression type grid reinforced viscoelastic damper |
| CN114482291B (en) * | 2022-02-17 | 2024-04-02 | 四川省建筑科学研究院有限公司 | Rubber shock insulation support |
| CN114892800B (en) * | 2022-04-20 | 2023-06-30 | 山东建筑大学 | Assembled beam column joint damping structure and construction method |
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