CN117888633A - Spring type tensile composite support - Google Patents
Spring type tensile composite support Download PDFInfo
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- CN117888633A CN117888633A CN202311777304.4A CN202311777304A CN117888633A CN 117888633 A CN117888633 A CN 117888633A CN 202311777304 A CN202311777304 A CN 202311777304A CN 117888633 A CN117888633 A CN 117888633A
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- 239000002131 composite material Substances 0.000 title claims abstract description 111
- 230000035939 shock Effects 0.000 claims abstract description 164
- 238000006073 displacement reaction Methods 0.000 claims abstract description 145
- 238000009413 insulation Methods 0.000 claims abstract description 118
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 16
- 238000004364 calculation method Methods 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 238000013016 damping Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E04B1/36—Bearings or like supports allowing movement
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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
- 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
-
- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention belongs to the technical field of shock insulation supports, and particularly relates to a spring type pull-out resistant composite support. The spring type anti-pulling composite support ensures that the tensile spring starts to be pulled and deformed after the horizontal displacement of the shock insulation support exceeds the middle shock displacement level through the adjusting device, the tensile spring is pulled and deformed to reach the maximum value when the horizontal displacement of the shock insulation support reaches the large shock displacement level, the tensile spring is pulled and deformed to cooperatively deform along with the shock insulation support in the process from the middle shock displacement level to the large shock displacement level, the spring type anti-pulling device can share the vertical pulling force born by the shock insulation support, thereby protecting the rubber shock insulation support from being in lower tensile stress, solving the problem of poor tensile capacity of the rubber shock insulation support, and simultaneously sharing the horizontal force of the shock insulation support, limiting the horizontal displacement and improving the shock absorption effect.
Description
Technical Field
The invention relates to the technical field of building vibration isolation, in particular to a spring type pull-out-resistant composite support.
Background
The vibration isolation technology is to set vibration isolation support, damping device and other parts between the bottom of the upper structure and the foundation, prolong the self-vibration period of the structure, increase the damping ratio of the structure, make the structural deformation mainly concentrated in the vibration isolation layer, reduce the earthquake force and deformation of the upper structure, make the structural deformation mainly concentrated in the vibration isolation layer, make the deformation of the upper structure very small, thus ensure the safety of the structure under the earthquake effect. Compared with a non-vibration isolation structure, the vibration isolation structure can reduce the earthquake action of the upper structure by about 60% -75%, so that the earthquake response of the upper structure is in integral translation, floor acceleration and interlayer displacement angle of each floor are greatly reduced, besides structural members, non-structural members, equipment and pipelines in a building are effectively protected, normal use requirements can be met when the earthquake for the area occurs, and the function restorability of the building structure after earthquake is improved.
The shock insulation support has lower tensile capacity, internal damage is caused after the shock insulation support is pulled, the elastic performance of the support is reduced, the pressure resistance is obviously reduced, and the support is no longer safe. In some high-rise or vertical earthquake sensitive structures, when the earthquake intensity is high, the shock insulation support is subjected to larger tensile stress, so that the application and popularization of the shock insulation technology are limited. In order to avoid damage to the shock insulation support caused by vertical stretching deformation, the publication number is CN disclosed on Chinese patent website
115538292A provides the vertical tensile capacity of the shock insulation support in a sandwich structure form by mainly adopting anchoring parts matched with inhaul cables. In addition, as the multidirectional damping and pulling-out preventing device and the damping method of the shock insulation support with the publication number of CN 110158803A, the shock insulation support can bear large tensile force in the vertical direction by adopting the cooperation of the springs and the steel wire ropes.
According to the prior art, the technical improvement for solving the problem of vertical anti-pulling of the shock-insulating support is mainly focused on how to optimize the stress of one or more structures, and an effective theoretical calculation method cannot be provided for the existing shock-insulating support or the anti-pulling support consisting of the shock-insulating supports, namely, the prior art cannot provide a more accurate calculation method for the anti-pulling support, particularly for the calculation of parameters of the anti-pulling spring and the shock-insulating support, the stress analysis of the anti-pulling spring and the shock-insulating support is influenced, and the model of various sectional materials is difficult to judge or select through visual data directly because the anti-fatigue points of the various sectional materials are different due to different parameters.
Disclosure of Invention
Based on the prior art, the invention provides a spring type pull-out-resistant composite support.
The invention provides a spring type anti-pulling composite support, which comprises a tensile spring, an upper connecting piece, a lower connecting piece, an upper connecting part, a lower connecting part and a shock insulation support, wherein the shock insulation support is arranged between an upper structural beam and a lower structural beam, the upper structural beam is connected with the top of the tensile spring through the upper connecting part, the lower structural beam is connected with the bottom of the tensile spring through the lower connecting part, the top end of the shock insulation support is connected with the bottom of the upper connecting piece, and the bottom end of the shock insulation support is connected with the top of the lower connecting piece so as to realize the connection action between the upper structural beam and the lower structural beam.
The tension spring is subjected to a tensile force F when the upper structure generates horizontal relative displacement relative to the lower structure t Generates deformation S, and has tensile rigidity of K t From this, the formula
S＝F t /K t
The deformation S is determined by the tensile length S of the tensile spring 1 And a sum S of the stretched lengths of the upper connecting portion and the lower connecting portion 2 Composition, i.e
S＝S 1 +S 2 ；
The tensile rigidity K t From the tensile stiffness coefficient K of the tensile spring 1 Tensile rigidity coefficient K of the upper connecting portion and the lower connecting portion 2 Composition and satisfy
F t /K t ＝F t /K 1 +F t /K 2 ；
1/K t ＝1/K 1 +1/K 2 ；
If K 1 Far less than K 2 Then K is t ≈K 1 。
The height between the upper structure beam and the lower structure beam is H, and the displacement level generated by the upper structure of the composite support relative to the lower structure is divided into three states of an initial state without earthquake, a middle earthquake displacement level and a large earthquake displacement level:
when no earthquake is in an initial state, the height of the composite support is H, the centroids of the tensile spring, the upper connecting part and the lower connecting part are kept on the same vertical line, and the centroids of the upper connecting piece, the lower connecting piece and the shock insulation support are positioned on the same vertical line;
when the middle vibration displacement is horizontal, the horizontal displacement of the composite support is X 1 The tensile spring is in a stress critical state, and the critical state length of the composite support is as follows:
S 1 ＝(H 2 +X 1 2 ) 1/2 ；
the tensile deformation S of the tensile spring is that the tensile spring can be subjected to the tensile force F only when the tensile deformation S of the tensile spring is larger than the tensile deformation S after the earthquake initial state reaches the earthquake displacement level under the condition that the tensile spring is not stressed t 。
In the initial state without earthquake, the tensile spring is internally provided with a zero-tension idle stroke S Middle shock Zero-tension idle stroke S Middle shock For the critical state length S of the composite support at the medium vibration displacement level 1 Subtracting the non-seismic initial state height H, namely:
S middle shock ＝(H 2 +X 1 2 ) 1/2 -H；
When the large vibration displacement is horizontal, the horizontal displacement of the composite support is X 2 Reaching the maximum value of the horizontal displacement,the tensile spring is in the state of maximum stress, and the length of the composite support is as follows:
S 2 ＝(H 2 +X 2 2 ) 1/2 ；
from the earthquake displacement level to the large earthquake displacement level, the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 At the time of large shock displacement level, the tension displacement S of the composite support Major shock The following are provided:
S major shock ＝(H 2 +X 2 2 ) 1/2 -(H 2 +X 1 2 ) 1/2 。
Preferably, the tension value F of the tension spring 1 ＝S 1 *K 1 The section bar and the model of the tension spring can be easily and accurately selected according to the calculation formula. The tension spring comprises any one of a belleville spring, a linear spring, a barrel spring or a wave spring.
Preferably, the tension value of the upper connecting part and the lower connecting part is F 2 ＝S 2 *K 2 The upper connecting part and the lower connecting part can adopt steel rods, screw rods, steel wire ropes, steel strands or any combination of the four parts in any proportion.
Through the technical scheme, more materials and model section bar selections can be provided for the connecting piece.
Preferably, according to the deformation S of the tension spring 1 Stiffness value K 1 And obtaining various parameters of the disc spring of the tension spring.
Through the technical scheme, the type of the proper tension spring can be selected and used according to the data parameter.
Preferably, in the process from the middle vibration displacement level to the large vibration displacement level, the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 Let the displacement at a certain moment in the process be X n X is then 1 ＜X n ＜X 2 The stress of the tensile spring at the moment is F t The included angle between the axis of the tension spring and the vertical line isThen:
through the technical scheme, the main stress parameters are subjected to formula calculation in the process from the middle vibration displacement level to the large vibration displacement level, and then the tension springs are selected according to the calculated parameters.
Preferably, the vertical component force F of the tension spring z The method comprises the following steps:
horizontal component force F of tension spring X The method comprises the following steps:
through the technical scheme, the vertical stress and the horizontal stress of the tensile spring are respectively analyzed and calculated by utilizing the trigonometric function.
Preferably, the horizontal rigidity of the shock insulation support is K V Vertical tensile stiffness of K N At the moment, the vibration isolation support and the tensile spring bear horizontal shearing force V and vertical pulling force N together, and when the vibration occurs, the horizontal displacement of the vibration isolation support is X at a certain moment n The vertical displacement of the shock insulation support is Z, and then:
the horizontal force of the shock insulation support and the horizontal component force of the tensile spring are jointly born according to the horizontal shearing force, and the following formula is obtained:
the equivalent horizontal stiffness of the shock insulation support and the tensile spring is as follows:
through the technical scheme, the equivalent horizontal stiffness of the shock insulation support and the tensile spring after being combined is subjected to stress analysis and calculation.
Preferably, the vertical stress of the shock insulation support and the vertical component force of the tension spring are jointly born according to the vertical tension, so that the following formula is obtained:
the equivalent vertical rigidity of the shock insulation support (6) and the tensile spring (1) is as follows:
through the technical scheme, the equivalent vertical stiffness of the shock insulation support and the tensile spring after being combined is subjected to stress analysis and calculation.
Preferably, the vertical displacement Z of the composite support is smaller than the horizontal displacement X n Stiffness K of the tension spring 1 Is far smaller than the vertical tensile rigidity K of the shock insulation support N At this time, the stress influence of the vertical displacement Z on the tension spring can be ignored.
Through the technical scheme, according to the actual stress analysis condition, the influence factors of the vertical deformation Z on the stress of the tension spring can be ignored.
Preferably, two ends of the tensile spring are respectively connected with the upper connecting part and the lower connecting part to realize 360-degree free rotation in the plane of the shock insulation layer.
Through the technical scheme, spatial three-dimensional tensile vibration can be realized, and the cooperative deformation with the support is ensured.
The beneficial effects of the invention are as follows:
the tension spring starts to be tensioned and deformed after the horizontal displacement of the shock isolation support exceeds the middle shock displacement level through the adjusting device, the tension deformation of the tension spring reaches the maximum value when the horizontal displacement of the shock isolation support reaches the large shock displacement level, the tension deformation of the tension spring cooperatively deforms along with the shock isolation support in the process from the middle shock displacement level to the large shock displacement level, and the spring type tension pulling device can share the vertical tension borne by the shock isolation support, so that the rubber shock isolation support is protected to be in lower tensile stress, and the problem that the tension capacity of the rubber shock isolation support is poor is solved. Meanwhile, the horizontal component of the spring type pulling-out resistant device can also share the horizontal force received by the shock insulation support, limit the horizontal displacement of the shock insulation support, avoid the shock insulation support from increasing the section because of overlarge horizontal displacement, and further reduce the engineering cost of the shock insulation support.
Drawings
FIG. 1 is a schematic view of a spring-type pull-out resistant composite support according to the present invention;
FIG. 2 is a diagram showing the deformation and stress state of the spring-type pull-out resistant composite support and the steel cable composite support in the earthquake process;
fig. 3 is a front view of a spherical hinge support for a spring-type pull-out resistant composite support according to the present invention;
FIG. 4 is a diagram showing deformation and stress state of a spherical hinge composite support of a spring-type pull-out resistant composite support in an earthquake process;
FIG. 5 is a diagram showing the deformation and stress state of the friction pendulum vibration isolation support of the spring-type anti-pulling composite support in the earthquake process;
FIG. 6 is a graph of horizontal shear force versus horizontal displacement for a spring-type pull-out resistant composite mount according to the present invention;
FIG. 7 is a graph showing the relationship between the vertical force and the vertical displacement as well as the horizontal displacement of a spring-type pull-out resistant composite support saddle provided by the invention;
FIG. 8 is a top view of a spring-type anti-pulling composite support according to the present invention;
FIG. 9 is a graph showing the displacement level of the spring-type anti-pulling composite support according to the present invention from no shock to middle shock to large shock;
FIG. 10 is a graph showing the deformation of a spring-type composite bearing along an angle θ;
fig. 11 is a graph showing the comparison of the vertical force time path of a spring-type pull-out resistant composite support and a conventional support according to the present invention.
In the figure: 1. a tension spring; 11. a wire rope; 12. a sleeve; 2. an upper connecting piece; 3. a lower connecting piece; 4. an upper connecting portion; 41. a hinged ball is arranged on the upper part; 5. a lower connecting part; 51. a lower hinge ball; 6. and a shock insulation support.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to fig. 1, 2 and 6-11, a spring type pull-out resistant composite support, as shown in fig. 1, comprises a tensile spring 1, an upper connecting piece 2, a lower connecting piece 3, an upper connecting portion 4, a lower connecting portion 5 and a shock insulation support 6.
The tension spring 1 is composed of a spring and a steel cable 11, the shock insulation support 6 is arranged between the upper structural beam and the lower structural beam, and the shock insulation support 6 comprises a shock insulation type shock insulation support and a tension type shock insulation support. The upper structure beam is connected with the top of a steel cable 11 in the tension spring 1 through the upper connecting part 4, the lower structure beam is connected with the bottom of the spring in the tension spring 1 through the lower connecting part 5, the top end of the shock insulation support 6 is connected with the bottom of the upper connecting piece 2, and the bottom end of the shock insulation support 6 is connected with the top of the lower connecting piece 3 so as to realize the connection action between the upper structure beam and the lower structure beam. The shock-insulating support 6 may be a laminated rubber shock-insulating support.
As shown in FIG. 1, when the upper structures at the two ends of the shock-insulating support 6 are horizontally displaced relative to the lower structures, the tensile deformation of the tension spring 1 is equal to the tensile deformation of the spring because the deformation of the tension spring 1 due to the tensile force of the steel cable 11 is small relative to the spring, and the tension spring 1 is subjected to the tensile force F t Generates deformation S, and has tensile rigidity of K t From this, the formula
S＝F t /K t 。
The deformation S is formed by the stretching length S of the tension spring 1 1 And the sum S of the stretching lengths of the upper connecting part 4 and the lower connecting part 5 2 Composition, i.e
S＝S 1 +S 2 ；
The tensile rigidity K t From the tensile stiffness coefficient K of the tension spring 1 1 Tensile rigidity coefficient K of the upper connecting portion 4 and the lower connecting portion 5 2 Composition and satisfy
F t /K t ＝F t /K 1 +F t /K 2 ；
1/K t ＝1/K 1 +1/K 2 ；
If K 1 Far less than K 2 Then K is t ≈K 1 。
Wherein the tensile force value F of the tensile spring 1 1 ＝S 1 *K 1 . Can easily and accurately select tensile strength according to the calculation formulaSection bar and model of spring 1.
So according to the deformation S of the tension spring 1 1 Stiffness value K 1 And obtaining various parameters of the tension spring 1. The type of the tensile spring 1 can be selected accurately according to the data parameters, and at this time, the type of the tensile spring 1 comprises any one of belleville springs and linear springs.
At the same time, in order to enable the composite support to meet the material design of most existing supports, the sum of the tensile force values of the upper connecting part 4 and the lower connecting part 5 is F 2 ＝S 2 *K 2 The upper connecting part 4 and the lower connecting part 5 can be made of steel wire ropes, steel strands or a combination of the two in any proportion according to the actual situation. More materials and model profile choices can be provided for the connector.
The height between the upper structure beam and the lower structure beam is H, and the displacement level generated by the upper structure of the composite support relative to the lower structure is divided into an initial state without earthquake, a middle earthquake displacement level and a large earthquake displacement level.
In the initial state without earthquake, the height of the composite support is H, as shown in fig. 2, the centroids of the tension spring 1, the upper connecting part 4 and the lower connecting part 5 are kept on the same vertical line, and the centroids of the upper connecting piece 2, the lower connecting piece 3 and the shock insulation support 6 are positioned on the same vertical line;
when the middle vibration displacement is horizontal, the horizontal displacement of the composite support is X 1 The tensile spring 1 is in a stress critical state, and the critical state length of the composite support is as follows:
S 1 ＝(H 2 +X 1 2 ) 1/2 。
as shown in fig. 2, the tension spring 1 is not stressed from the initial state of no earthquake to the middle earthquake displacement level, and the tension spring 1 is only stressed after the middle earthquake displacement level is reached.
In the initial state without earthquake, the tension spring 1 is internally provided with a zero-tension idle stroke S Middle shock Zero-tension idle stroke S Middle shock For the critical state length S of the composite support at the medium vibration displacement level 1 Subtracting the non-seismic initial state height H, namely:
S middle shock ＝(H 2 +X 1 2 ) 1/2 -H；
When the composite support is in the large shock displacement level, the horizontal displacement of the composite support is X 2 The maximum value of the horizontal displacement is reached, the tension spring 1 is in the state of maximum stress, and the length of the composite support is as follows:
S 2 ＝(H 2 +X 2 2 ) 1/2 ；
as shown in FIG. 2, the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 The displacement S of the composite support is at the time of the large shock displacement level Major shock The following are provided:
S major shock ＝(H 2 +X 2 2 ) 1/2 -(H 2 +X 1 2 ) 1/2 。
The middle earthquake generally refers to an earthquake with the earthquake magnitude of 4.0-5.9, has strong earthquake sense, can sense the vibration of a building and an artificial structure, and generally does not cause great influence or loss.
The major earthquake generally refers to an earthquake with the earthquake magnitude of more than 6.0, has extremely strong earthquake sense, can cause serious influences such as collapse of buildings and artificial structures, earth and stone flows and the like, and causes extremely threatening to the life and property safety of people.
As shown in fig. 2-3, for clarity, the force applied during the process from the middle vibration displacement level to the large vibration displacement level is analyzed, when the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 Let the displacement at a certain moment in the process be X n X is then 1 ＜X n ＜X 2 At this point the tension spring 1 is forced to a force F t The included angle between the axis of the tension spring 1 and the vertical line is thatThen:
and the process from the middle earthquake displacement level to the large earthquake displacement level realizes the formula calculation of main stress parameters, and then the tension spring 1 is selected according to each calculated parameter.
So according to the above formula, the vertical component force F of the tension spring 1 z The method comprises the following steps:
horizontal component force F of the tension spring 1 X The method comprises the following steps:
and respectively analyzing and calculating the vertical and horizontal stress of the tension spring 1 by using a trigonometric function.
Because the tension spring 1 and the shock insulation support 6 deform simultaneously when the composite support is subjected to horizontal force, after mechanical analysis is performed on the tension spring 1, the stress of the shock insulation support 6 is also analyzed, and the horizontal rigidity of the shock insulation support 6 is set to be K V Vertical tensile stiffness of K N At this time, the shock insulation support 6 and the tensile spring 1 bear horizontal shearing force V and vertical pulling force N together, and when the shock is generated, the horizontal displacement of the shock insulation support 6 is X n The vertical displacement of the shock insulation support 6 is thatZ, then:
as shown in fig. 6, the horizontal force of the shock insulation support 6 and the horizontal component force of the tension spring 1 are jointly born according to the horizontal shearing force, so as to obtain the following formula:
the equivalent horizontal stiffness of the shock insulation support 6 and the tensile spring 1 is as follows:
and carrying out stress analysis calculation on the equivalent horizontal stiffness of the shock insulation support 6 and the tensile spring 1 after being combined.
As shown in fig. 7, the vertical stress of the shock insulation support 6 and the vertical component force of the tension spring 1 are jointly born according to the vertical tension, so as to obtain the following formula:
the equivalent vertical stiffness of the shock insulation support 6 and the tensile spring 1 is as follows:
and carrying out stress analysis and calculation on the equivalent vertical stiffness of the shock insulation support 6 and the tensile spring 1 after being combined.
As shown in fig. 7, taking into account the vertical displacement of the composite supportZ is smaller than the horizontal displacement X n Stiffness K of tension spring 1 1 Is far smaller than the vertical tensile rigidity K of the shock insulation support 6 N The influence of the vertical displacement Z on the stress of the tension spring 1 can be neglected in this case. According to the actual stress analysis condition, the influence factor of the vertical displacement Z on the stress of the tension spring 1 can be ignored.
As further shown in fig. 8-10, in order to further consider the influence of the tensile device on the stress of the composite support, from the top view of the composite support, when the composite support is mounted on the structural beams of four points D and A, B, C around the shock-insulation support, the shock-insulation support is displaced along the angle θ under the action of an earthquake, the tensile devices of four points A, B, C and D are deformed in coordination with the shock-insulation support, the relative deformation of the top and the bottom of the tensile device is consistent with the relative deformation of the top and the bottom of the shock-insulation support, and the tensile devices of four points A, B, C, D are horizontally deformed in accordance with each other, stressed in accordance with the included angle with the vertical line. A. B, C, D horizontal component F of force produced by four-point tensile means tx The magnitude and the direction of the horizontal component force are consistent, and the direction of the horizontal component force is opposite to the deformation direction. Vertical component F of force generated by tensile means tz The magnitude and the direction of the vertical component force are consistent, and the direction of the vertical component force is downward along the vertical line.
The horizontal force of the tensile device with four points at four sides A, B, C, D on the composite support is as follows:
F＝4*F tx 。
the vertical tension of the four-point tensile device on the periphery A, B, C, D to the composite support is as follows:
N＝4*F tz 。
wherein F is tx F as a horizontal component of the tensile means tz Is the vertical component force of the tensile device.
The horizontal component force of the tensile device at the point A is as follows:
F txA ＝F tx ；
arm a A ＝R*cosθ。
The bending moment relative to the midpoint of the composite support is as follows:
M A ＝F tx *a A ＝F tx *R*cosθ。
the horizontal component force of the tensile device at the point B is as follows:
F txB ＝F tx ；
arm a B ＝R*sinθ。
The bending moment relative to the midpoint of the composite support is as follows:
M B ＝F tx *a B ＝F tx *R*sinθ；
the horizontal component force of the tensile device at the point C is as follows:
F txC ＝F tx ；
arm a C ＝R*cosθ；
The bending moment relative to the midpoint of the composite support is as follows:
M C ＝F tx *a C ＝F tx *R*cosθ。
the horizontal component force of the tensile device at the point D is as follows:
F txD ＝F tx ；
arm a D ＝R*sinθ。
The bending moment relative to the midpoint of the composite support is as follows:
M D ＝F tx *a D ＝F tx *R*sinθ。
at this time, the sum of bending moments of four tensile devices at four sides A, B, C, D to the composite support is:
M＝M A -M B -M C +M D ＝
F tx *R*cosθ-F tx *R*sinθ-F tx *R*cosθ+F tx *R*sinθ＝0
in actual engineering, according to the stress condition of the column lower support, one, two, three or four points of the four points around the support can be selected to be provided with the tensile devices with the same specification. When four points or two opposite points (such as A, C two points or B, D two points) are selected, the sum of bending moments of the tensile device on the composite support is zero. When one point, three points or two adjacent points (such as A, B two points or B, C two points) are selected, the sum of the bending moment of the tensile device on the composite support is greater than zero, and the stress of the tensile device is limited relative to the structural dead weight, so that the bending moment has less influence on the structure. Therefore, the tensile means has a negligible impact on the stress of the composite support.
As shown in fig. 11, the data of numbers K1, K5 and K21 generated after the comparison of the conventional support and the composite support of the present application show that the tensile deformation of the tensile spring 1 begins after the horizontal displacement of the shock insulation support 6 exceeds the middle shock displacement level by adjusting the relaxation length of the device, and the tensile deformation of the tensile spring 1 reaches the maximum when the horizontal displacement of the shock insulation support 6 reaches the large shock displacement level. In the process from the earthquake displacement level to the large earthquake displacement level, the tension spring 1 is pulled to deform cooperatively with the earthquake support 6, and the spring type tension pulling device can share the vertical tension born by the earthquake support 6, so that the earthquake support 6 is protected to be in lower tensile stress, and the problem that the tension capacity of the earthquake support 6 is poor is solved. Meanwhile, the horizontal component of the spring type anti-pulling device can also share the horizontal force received by the shock insulation support 6, so that the horizontal displacement of the shock insulation support 6 is limited, the diameter of the shock insulation support 6 is reduced after limiting due to the fact that the limit of the horizontal displacement is reduced, the rigidity is reduced, the shock absorption effect during middle earthquake can be improved, and the shock insulation support has the effect of limiting large earthquake displacement. The need of increasing the section of the shock insulation support 6 due to overlarge horizontal displacement is avoided, so that the engineering cost of the shock insulation support 6 is reduced.
Example two
Referring to fig. 3-11, a spring-type pull-out resistant composite support, as shown in fig. 3, comprises a pull-out resistant spring 1, an upper connecting piece 2, a lower connecting piece 3, an upper connecting portion 4, a lower connecting portion 5 and a shock insulation support 6, wherein the upper connecting portion 4 is an upper hinge ball 41, and the lower connecting portion 5 is a lower hinge ball 51.
The tension spring 1 is composed of a spring and a sleeve 12 sleeved with the spring and fixedly connected with an upper hinge ball 41 and a lower hinge ball 51 at two ends respectively, the shock insulation support 6 is arranged between an upper structural beam and a lower structural beam, and the shock insulation support 6 comprises any one of a shock insulation support, a tension type shock insulation support or a friction pendulum shock insulation support. The upper structure beam is connected with the top of the spring in the tension spring 1 through an upper hinge ball 41, the lower structure beam is connected with the bottom of the spring in the tension spring 1 through a lower hinge ball 51, the top end of the shock insulation support 6 is connected with the bottom of the upper connecting piece 2, and the bottom end of the shock insulation support 6 is connected with the top of the lower connecting piece 3 so as to realize the connection action between the upper structure beam and the lower structure beam.
The two ends of the spring are respectively connected with the upper hinge ball 41 and the lower hinge ball 51 to realize 360 degrees of free rotation in the plane of the shock insulation layer, and the spring type anti-pulling device can coordinate and deform with the shock insulation support to play roles of vertically stretching resistance and limiting horizontal displacement after the shock insulation support 6 horizontally displaces in any direction in the plane.
As shown in FIG. 3, when the upper structures at the two ends of the shock-insulating support 6 are horizontally displaced relative to the lower structures, the tensile deformation of the tension spring 1 is equal to the tensile deformation of the spring because the deformation of the tension spring 1 due to the tensile force of the wire rope 11 is small relative to the spring, and the tension spring 1 is subjected to the tensile force F t Generates deformation S, and has tensile rigidity of K t From this, the formula
S＝F t /K t 。
The deformation S is formed by the stretching length S of the tension spring 1 1 And the sum S of the stretching lengths of the upper connecting part 4 and the lower connecting part 5 2 Composition, i.e
S＝S 1 +S 2 ；
The tensile rigidity K t From the tensile stiffness coefficient K of the tension spring 1 1 Tensile rigidity coefficient K of the upper connecting portion 4 and the lower connecting portion 5 2 Composition and satisfy
F t /K t ＝F t /K 1 +F t /K 2 ；
1/K t ＝1/K 1 +1/K 2 ；
If K 1 Far less than K 2 Then K is t ≈K 1 。
Wherein the tensile force value F of the tensile spring 1 1 ＝S 1 *K 1 . Can be used forThe section bar and the model of the tension spring 1 are easily and accurately selected according to the calculation formula. The material for manufacturing the spring in the tension spring 1 comprises any one of a belleville spring and a barrel spring.
So according to the deformation S of the tension spring 1 1 Stiffness value K 1 And obtaining various parameters of the tension spring 1. The type of the tensile spring 1 can be selected accurately according to the data parameters.
At the same time, in order to enable the composite support to meet the material design of most existing supports, the tensile force value of the upper connecting part 4 and the lower connecting part 5 is F 2 ＝S 2 *K 2 The upper connecting portion 4 and the lower connecting portion 5 may be steel rods, screws or a combination of the two at any ratio according to actual conditions. More materials and model profile choices can be provided for the connector.
The height between the upper structure beam and the lower structure beam is H, and the displacement level generated by the upper structure of the composite support relative to the lower structure is divided into an initial state without earthquake, a middle earthquake displacement level and a large earthquake displacement level.
In the initial state without earthquake, the height of the composite support is H, as shown in fig. 3-4, the centroids of the tension spring 1, the upper connecting portion 4 and the lower connecting portion 5 are kept on the same vertical line, and the centroids of the upper connecting piece 2, the lower connecting piece 3 and the shock insulation support 6 are located on the same vertical line.
When the middle vibration displacement is horizontal, the horizontal displacement of the composite support is X 1 The tensile spring 1 is in a stress critical state, and the critical state length of the composite support is as follows:
S 1 ＝(H 2 +X 1 2 ) 1/2 ；
as shown in fig. 4-5, the tension spring 1 is not stressed from the initial state of no earthquake to the middle earthquake displacement level, and the tension spring 1 is only stressed after the middle earthquake displacement level is reached.
In the absence of an initial state of the earthquake,the tension spring 1 is internally provided with a zero-tension idle stroke S Middle shock Zero-tension idle stroke S Middle shock For the critical state length S of the composite support at the medium vibration displacement level 1 Subtracting the non-seismic initial state height H, namely:
S middle shock ＝(H 2 +X 1 2 ) 1/2 -H；
When the composite support is in the large shock displacement level, the horizontal displacement of the composite support is X 2 The maximum value of the horizontal displacement is reached, the tension spring 1 is in the state of maximum stress, and the length of the composite support is as follows:
S 2 ＝(H 2 +X 2 2 ) 1/2 ；
as shown in fig. 4-5, the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 From the earthquake displacement level to the major earthquake displacement level, the displacement S of the composite support Major shock The following are provided:
S major shock ＝(H 2 +X 2 2 ) 1/2 -(H 2 +X 1 2 ) 1/2 。
As shown in fig. 3-5, for clarity, the force applied during the process from the middle vibration displacement level to the large vibration displacement level is analyzed, when the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 Let the displacement at a certain moment in the process be X n X is then 1 ＜X n ＜X 2 At this point the tension spring 1 is forced to a force F t The included angle between the axis of the tension spring 1 and the vertical line is thatThen:
and the process from the middle earthquake displacement level to the large earthquake displacement level realizes the formula calculation of main stress parameters, and then the tension spring 1 is selected according to each calculated parameter.
So according to the above formula, the vertical component force F of the tension spring 1 z The method comprises the following steps:
horizontal component force F of the tension spring 1 X The method comprises the following steps:
and respectively analyzing and calculating the vertical and horizontal stress of the tension spring 1 by using a trigonometric function.
Because the tension spring 1 and the shock insulation support 6 deform simultaneously when the composite support is subjected to horizontal force, after mechanical analysis is performed on the tension spring 1, the stress of the shock insulation support 6 is also analyzed, and the horizontal rigidity of the shock insulation support 6 is set to be K V Vertical tensile stiffness of K N At this time, the shock insulation support 6 and the tensile spring 1 are subjected to horizontal shearing force V and vertical pulling force N together, and the vertical deformation of the shock insulation support 6 is Z, and then:
as shown in fig. 6, the horizontal force of the shock insulation support 6 and the horizontal component force of the tension spring 1 are jointly born according to the horizontal shearing force, so as to obtain the following formula:
the equivalent horizontal stiffness of the shock insulation support 6 and the tensile spring 1 is as follows:
and carrying out stress analysis calculation on the equivalent horizontal stiffness of the shock insulation support 6 and the tensile spring 1 after being combined.
As shown in fig. 7, the vertical stress of the shock insulation support 6 and the vertical component force of the tension spring 1 are jointly born according to the vertical tension, so as to obtain the following formula:
the equivalent vertical stiffness of the shock insulation support 6 and the tensile spring 1 is as follows:
and carrying out stress analysis and calculation on the equivalent vertical stiffness of the shock insulation support 6 and the tensile spring 1 after being combined.
As shown in fig. 7, considering that the vertical displacement Z of the composite support is small, it is much smaller than the horizontal displacement X n Stiffness K of tension spring 1 1 Is far smaller than the vertical tensile rigidity K of the shock insulation support 6 N The influence of the vertical displacement Z on the stress of the tension spring 1 can be neglected in this case. According to the actual stress analysis condition, the influence factor of the vertical displacement Z on the stress of the tension spring 1 can be ignored.
As further shown in fig. 8-10, to further consider the tensile means versus composite supportThe stress influence of the seat is analyzed from the overlooking angle of the composite support, when the composite support is installed on the structural beams of four points of the periphery A, B, C of the shock insulation support and D, the shock insulation support is displaced along the angle theta under the action of an earthquake, the A, B, C tensile devices of the four points D can be in coordinated deformation with the shock insulation support, the relative deformation of the top and the bottom of the tensile devices is consistent with the relative deformation of the top and the bottom of the shock insulation support, and the tensile devices of the four points A, B, C, D are in horizontal deformation consistent, stress is consistent and included angle with the vertical line is consistent. A. B, C, D horizontal component F of force produced by four-point tensile means tx The magnitude and the direction of the horizontal component force are consistent, and the direction of the horizontal component force is opposite to the deformation direction. Vertical component F of force generated by tensile means tz The magnitude and the direction of the vertical component force are consistent, and the direction of the vertical component force is downward along the vertical line.
The horizontal force of the tensile device with four points at four sides A, B, C, D on the composite support is as follows:
F＝4*F tx 。
the vertical tension of the four-point tensile device on the periphery A, B, C, D to the composite support is as follows:
N＝4*F tz 。
wherein F is tx F as a horizontal component of the tensile means tz Is the vertical component force of the tensile device.
The horizontal component force of the tensile device at the point A is as follows: f (F) txA ＝F tx The method comprises the steps of carrying out a first treatment on the surface of the Arm a A ＝R*cosθ。
The bending moment relative to the midpoint of the composite support is as follows: m is M A ＝F tx *a A ＝F tx *R*cosθ。
The horizontal component force of the tensile device at the point B is as follows: f (F) txB ＝F tx The method comprises the steps of carrying out a first treatment on the surface of the Arm a B ＝R*sinθ。
The bending moment relative to the midpoint of the composite support is as follows: m is M B ＝F tx *a B ＝F tx *R*sinθ；
The horizontal component force of the tensile device at the point C is as follows: f (F) txC ＝F tx The method comprises the steps of carrying out a first treatment on the surface of the Arm a C ＝R*cosθ；
The bending moment relative to the midpoint of the composite support is as follows:M C ＝F tx *a C ＝F tx *R*cosθ。
the horizontal component force of the tensile device at the point D is as follows: f (F) txD ＝F tx The method comprises the steps of carrying out a first treatment on the surface of the Arm a D ＝R*sinθ。
The bending moment relative to the midpoint of the composite support is as follows:
M D ＝F tx *a D ＝F tx *R*sinθ。
at this time, the sum of bending moments of four tensile devices at four sides A, B, C, D to the composite support is:
M＝M A -M B -M C +M D ＝
F tx *R*cosθ-F tx *R*sinθ-F tx *R*cosθ+F tx *R*sinθ＝0
in actual engineering, according to the stress condition of the column lower support, one, two, three or four points of the four points around the support can be selected to be provided with the tensile devices with the same specification. When four points or two opposite points (such as A, C two points or B, D two points) are selected, the sum of bending moments of the tensile device on the composite support is zero. When one point, three points or two adjacent points (such as A, B two points or B, C two points) are selected, the sum of the bending moment of the tensile device on the composite support is greater than zero, and the stress of the tensile device is limited relative to the structural dead weight, so that the bending moment has less influence on the structure. Therefore, the tensile means has a negligible impact on the stress of the composite support.
As shown in fig. 11, the data of numbers K1, K5 and K21 generated after the comparison of the conventional support and the composite support of the present application show that the tensile deformation of the tensile spring 1 begins after the horizontal displacement of the shock insulation support 6 exceeds the middle shock displacement level by adjusting the relaxation length of the device, and the tensile deformation of the tensile spring 1 reaches the maximum when the horizontal displacement of the shock insulation support 6 reaches the large shock displacement level. In the process from the earthquake displacement level to the large earthquake displacement level, the tension spring 1 is pulled to deform cooperatively with the earthquake support 6, and the spring type tension pulling device can share the vertical tension born by the earthquake support 6, so that the earthquake support 6 is protected to be in lower tensile stress, and the problem that the tension capacity of the earthquake support 6 is poor is solved. Meanwhile, the horizontal component of the spring type anti-pulling device can also share the horizontal force received by the shock insulation support 6, so that the horizontal displacement of the shock insulation support 6 is limited, the diameter of the shock insulation support 6 is reduced after limiting due to the fact that the limit of the horizontal displacement is reduced, the rigidity is reduced, the shock absorption effect during middle earthquake can be improved, and the shock insulation support has the effect of limiting large earthquake displacement. The need of increasing the section of the shock insulation support 6 due to overlarge horizontal displacement is avoided, so that the engineering cost of the shock insulation support 6 is reduced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a spring type anti-pulling composite support, includes tensile spring (1), goes up connecting piece (2), lower connecting piece (3), upper portion connecting portion (4), lower part connecting portion (5), shock insulation support (6) set up between upper portion structure roof beam and lower part structure roof beam, upper portion structure roof beam pass through upper portion connecting portion (4) with the top of tensile spring (1), lower part structure roof beam pass through lower part connecting portion (5) with the bottom of tensile spring (1) is connected, the top of shock insulation support (6) with the bottom of upper connecting piece (2) is connected, the bottom of shock insulation support (6) with the top of lower connecting piece (3) is connected, in order to realize upper portion structure roof beam with the connection action between the lower part structure roof beam;
the method is characterized in that: when the upper structure generates horizontal relative displacement relative to the lower structure, the tension spring (1) receives a tensile force F t Generates deformation S, and has tensile rigidity of K t From this, the formula
S＝F t /K t
The deformation S is determined by the tensile length S of the tensile spring (1) 1 And the sum S of the stretching lengths of the upper connecting part (4) and the lower connecting part (5) 2 The composition of the composite material comprises the components,i.e.
S＝S 1 +S 2 ；
The tensile rigidity K t From the tensile stiffness coefficient K of the tensile spring (1) 1 The tensile rigidity coefficient K of the upper connecting part (4) and the lower connecting part (5) 2 Composition and satisfy
F t /K t ＝F t /K 1 +F t /K 2 ；
1/K t ＝1/K 1 +1/K 2 ；
If K 1 Far less than K 2 Then K is t ≈K 1 ；
The height between the upper structure beam and the lower structure beam is H, and the displacement level generated by the upper structure of the composite support relative to the lower structure is divided into an initial state without earthquake, a middle earthquake displacement level and a large earthquake displacement level;
when no earthquake is in an initial state, the height of the composite support is H, the centroids of the tension spring (1), the upper connecting part (4) and the lower connecting part (5) are kept on the same vertical line, and the centroids of the upper connecting piece (2), the lower connecting piece (3) and the shock insulation support (6) are positioned on the same vertical line;
when the middle vibration displacement is horizontal, the horizontal displacement of the composite support is X 1 The tensile spring (1) is in a stress critical state, and the critical state length of the composite support is as follows:
S 1 ＝(H 2 +X 1 2 ) 1/2 ；
under the condition that the tension spring (1) is not stressed from the initial state of no earthquake to the middle earthquake displacement level, the tension deformation S of the tension spring (1) is 0, and the tension spring (1) can be stressed by the tension force F only when the tension deformation S of the tension spring (1) is larger than 0 after the middle earthquake displacement level is reached t ；
In the initial state without earthquake, the tensile spring (1) is internally provided with a zero-tension idle stroke S Middle shock Zero-tension idle stroke S Middle shock For the composite support to be at the middle vibration displacement levelInterface state length S 1 Subtracting the non-seismic initial state height H, namely:
S middle shock ＝(H 2 +X 1 2 ) 1/2 -H；
When the large vibration displacement is horizontal, the horizontal displacement of the composite support is X 2 The maximum value of horizontal displacement is reached, the tensile spring (1) is in the state of maximum stress, and the length of the composite support is as follows:
S 2 ＝(H 2 +X 2 2 ) 1/2 ；
from the earthquake displacement level to the large earthquake displacement level, the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 At the time of large shock displacement level, the tension displacement S of the composite support Major shock The following are provided:
S major shock ＝(H 2 +X 2 2 ) 1/2 -(H 2 +X 1 2 ) 1/2 。
2. The spring type pull-out resistant composite support according to claim 1, wherein: the tensile force value F of the tensile spring (1) 1 ＝S 1 *K 1 ；
The tension spring (1) comprises any one of a belleville spring, a linear spring, a barrel spring or a wave spring.
3. The spring-type pull-out resistant composite support according to claim 2, wherein: according to the deformation S of the tension spring (1) 1 Stiffness value K 1 Obtaining various parameters of the tension spring (1).
4. The spring type pull-out resistant composite support according to claim 1, wherein: the tension value of the upper connecting part (4) and the lower connecting part (5) is F 2 ＝S 2 *K 2 The upper connecting part (4) and the lower connecting part (5) can adopt steel rods, screw rods, steel wire ropes, steel strands or the combination of the four at any proportion。
5. The spring type pull-out resistant composite support according to claim 1, wherein: in the process from the middle vibration displacement level to the large vibration displacement level, the horizontal displacement of the composite support is from X 1 Gradually increase to X 2 Let the displacement at a certain moment in the process be X n X is then 1 ＜X n ＜X 2 At this point the stress of the tension spring (1) is F t The included angle between the axis of the tension spring (1) and the vertical line isThen:
6. the spring type pull-out resistant composite support according to claim 5, wherein: vertical component force F of the tension spring (1) z The method comprises the following steps:
the horizontal component force F of the tension spring (1) x The method comprises the following steps:
7. the spring type pull-out resistant composite support according to claim 1, wherein: the horizontal rigidity of the shock insulation support (6) is K V Vertical tensile stiffness of K N At the moment, the vibration isolation support (6) and the tensile spring (1) bear horizontal shearing force V and vertical pulling force N together, and the horizontal displacement of the vibration isolation support (6) is X at a certain moment during vibration n The vertical displacement of the shock insulation support (6) is Z, and then:
the horizontal force of the shock insulation support (6) and the horizontal component force of the tension spring (1) are jointly born according to the horizontal shearing force, so that the following formula is obtained:
the equivalent horizontal stiffness of the shock insulation support (6) and the tensile spring (1) is as follows:
8. the spring type pull-out resistant composite support according to claim 7, wherein: the vertical stress of the shock insulation support (6) and the vertical component force of the tension spring (1) are jointly born according to the vertical tension to obtain the following formula:
the equivalent vertical rigidity of the shock insulation support (6) and the tensile spring (1) is as follows:
9. the spring type pull-out resistant composite support according to claim 8, wherein: the vertical displacement Z of the composite support is smaller and far smaller than the horizontal displacement X n Stiffness K of the tension spring (1) 1 Is far smaller than the vertical tensile rigidity K of the shock insulation support (6) N The influence of the vertical displacement Z on the tension spring (1) can be neglected.
10. The spring type pull-out resistant composite support according to claim 1, wherein: the two ends of the tensile spring (1) are respectively connected with the upper connecting part (4) and the lower connecting part (5) to realize 360-degree free rotation in the plane of the shock insulation layer.
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| JPH10205167A (en) * | 1997-01-22 | 1998-08-04 | K Y Venture Corp:Kk | Vibration damping antiseismic device in building, vibration damping antiseismic method, and vibration damping antiseismic structure |
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| CN106088345A (en) * | 2016-06-04 | 2016-11-09 | 上海大学 | A kind of non-smooth cold bonding preformed rubber shock isolating pedestal |
| CN116181141A (en) * | 2023-03-24 | 2023-05-30 | 兰州理工大学 | Triple friction pendulum shock absorption and insulation support improved by SMA inhaul cable |
| CN116950265A (en) * | 2023-09-18 | 2023-10-27 | 甘肃宏强工程检测有限公司 | Shock insulation support and building |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10205167A (en) * | 1997-01-22 | 1998-08-04 | K Y Venture Corp:Kk | Vibration damping antiseismic device in building, vibration damping antiseismic method, and vibration damping antiseismic structure |
| CN201901843U (en) * | 2010-12-20 | 2011-07-20 | 李晓东 | Pulling-resistant type triple-friction swinging type shock insulation support |
| CN106088345A (en) * | 2016-06-04 | 2016-11-09 | 上海大学 | A kind of non-smooth cold bonding preformed rubber shock isolating pedestal |
| CN116181141A (en) * | 2023-03-24 | 2023-05-30 | 兰州理工大学 | Triple friction pendulum shock absorption and insulation support improved by SMA inhaul cable |
| CN116950265A (en) * | 2023-09-18 | 2023-10-27 | 甘肃宏强工程检测有限公司 | Shock insulation support and building |
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