CN104805922A - Multi-dimensional visco-elastic shock isolation device - Google Patents

Multi-dimensional visco-elastic shock isolation device Download PDF

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Publication number
CN104805922A
CN104805922A CN201510170881.6A CN201510170881A CN104805922A CN 104805922 A CN104805922 A CN 104805922A CN 201510170881 A CN201510170881 A CN 201510170881A CN 104805922 A CN104805922 A CN 104805922A
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viscoelastic
steel plate
rod
spring
core pad
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CN201510170881.6A
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CN104805922B (en
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徐赵东
黄兴淮
郭迎庆
尹学军
盖盼盼
贾红兵
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Southeast University
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Southeast University
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Abstract

The invention discloses a multi-dimensional visco-elastic shock isolation device. The device comprises a device lower steel plate (1), a spring visco-elastic material rod (2), a visco-elastic material steel plate lamination core cushion (3), a device upper steel plate (4) and a bolt (5), wherein the spring visco-elastic material rod and the visco-elastic material steel plate lamination core cushion are located between the device lower steel plate and the device upper steel plate, the visco-elastic material steel plate lamination core cushion is located in the middle of the device, the spring visco-elastic material rod is located on the periphery of the visco-elastic material steel plate lamination core cushion, and the upper and lower steel plates of the visco-elastic material steel plate lamination core cushion are respectively fixed with the device upper steel plate and the device lower steel plate through bolts. The vertical compressive capacity and energy-dissipating capacity of the device can be improved by the spring visco-elastic material rod; meanwhile, the visco-elastic material steel plate lamination core cushion can be protected from being damaged due to the excessive tension and compression deformation, and the problems that the visco-elastic material steel plate lamination core cushion is adequate in rigidity and is easy to be pulled and damaged can be solved.

Description

A kind of multidimensional viscoplasticity seismic isolation device
Technical field
The present invention is a kind of device for engineering structures antidetonation (shaking), especially a kind of device multi-direction vibration being played to obvious shock insulation and cushioning effect.
Background technology
Vibration is the principal element causing the tired and even catastrophe of engineering structures, can cause tremendous economic property loss and mass casualties, according to incompletely statistics in the last hundred years the whole world number of dying because of earthquake and high wind up to more than 700 ten thousand.The force-mechanism of cognitive structure under dynamic loading and dynamic response exactly, and the research topic that reliable antidetonation (shaking) safeguard measure is a frontier nature is implemented to it.Structural vibration control is a kind of novel antidetonation (shaking) mode, namely utilizes isolator or damper isolation or consumes external drive energy, alleviating the destruction of external drive to main structure to reach.The earthquake isolating equipment of current developmental research has rubber vibration isolation cushion, lead-rubber isolation cushion and sliding and shock isolation device etc., and the damping device of developmental research has viscoelastic damper, Effects of Viscous Fluid Damper, metal damper, frcition damper, marmem damper, magnetoelectricity rheological damper etc.But these earthquake isolating equipments only play the effect of horizontal direction isolating technique, the level that but can not play is to the effect isolated with vertical motion simultaneously; And damping device can not play function of shock insulation; Existing earthquake isolating equipment anti-pulling ability simultaneously, easily draws bad, lacks safeguard measure under strong external drive.A large amount of actual shakes is shaken harmful showing: for large-span structure, bridge construction, Important building, precision surface plate, frame for movement, military project structure, vertical motion is a very important external drive, must give enough attention.
This patent, for the above-mentioned deficiency of multi-direction damping or earthquake isolating equipment, has invented a kind of multidimensional viscoplasticity seismic isolation device, this device have level to vertical earthquake isolating and damping capacity, and effectively can improve the shortcoming of earthquake isolating equipment resistance to tension difference.
Summary of the invention
Technical problem: the object of the invention is to develop a kind of cheap, dependable performance, multidimensional viscoplasticity seismic isolation device easy for installation, this device can either simultaneously level of isolation to vertical vibrational energy, the level that can simultaneously dissipate again to vertical vibrational energy, and effectively can improve the shortcoming of earthquake isolating equipment resistance to tension difference.
Technical scheme: a kind of multidimensional viscoplasticity seismic isolation device of the present invention comprises device lower steel plate, spring viscoelastic material rod, viscoelastic material steel plate lamination core pad, device upper steel plate and bolt; Wherein, spring viscoelastic material rod and viscoelastic material steel plate lamination core pad are between device lower steel plate and device upper steel plate, viscoelastic material steel plate lamination core pad is positioned at centre, spring viscoelastic material rod is positioned at the periphery of viscoelastic material steel plate lamination core pad, and two block plates up and down of viscoelastic material steel plate lamination core pad are bolted with device upper steel plate, device lower steel plate respectively; In spring viscoelastic material rod, the two ends up and down of outer hoop spring are fixed with device upper steel plate, device lower steel plate respectively; When device is subject to vertical tension and compression vibration and level to scissoring vibration, spring viscoelastic material rod and the collaborative work of viscoelastic material steel plate lamination core pad, compare with the agent structure added, form rigidity weak floor, effectively can isolate vertical and Horizontal Vibration, can there is tension and compression or shear strain and dissipate vibrational energy in the viscoelastic material simultaneously in spring viscoelastic material rod and viscoelastic material steel plate lamination core pad under vertical or Horizontal Vibration encourage.
Spring viscoelastic material rod is made up of viscoelastic material rod and outer hoop spring, and the intermediate coaxial that viscoelastic material rod is positioned at outer hoop spring is arranged; When there is vertical or horizontal relative displacement in device, viscoelastic material rod can occur to compress or shear strain and dissipate vibrational energy, and viscoelastic material rod is subject to the effect of contraction of outer hoop spring when pressurized, in three dimension stress state, the vertical compression bearing of viscoelastic material rod is increased, and simultaneously under vertical pressure effect, viscoelastic material rod is radial thicker, shearing area increases, and energy dissipation capacity gets a promotion.
Viscoelastic material steel plate lamination core pad is formed by some viscoelastic material layer and steel sheet spacer stack, viscoelastic material steel plate lamination core pad radial outer is viscoelastic material topping, and whole viscoelastic material steel plate lamination core pad is made by HTHP sulfuration; When this device occurred level is to vibration, viscoelastic material steel plate lamination core pad in level to formation rigidity weak floor, separating vibration energy transferring, simultaneously core space viscoelastic material because there is shear strain dissipate vibrational energy; During this device generation vertical motion, viscoelastic material steel plate lamination core pad forms rigidity weak floor, separating vibration energy transferring vertical, and core space viscoelastic material is owing to vertical compression occurring and presses pine and reciprocal transformation occurs, dissipate vibrational energy simultaneously; Be enclosed with viscoelastic material in the radial outer periphery of steel sheet and viscoelastic material layer laminate core pad, protect steel sheet not by the corrosion of external environment.
The outer hoop spring upper and lower side of multidimensional viscoplasticity seismic isolation device is affixed with upper steel plate, lower steel plate respectively, and during device tension, outer hoop spring provides pulling force, solves the problem of viscoelastic material steel plate lamination core pad tension insufficient rigidity, tension destructible; Some spring viscoelastic material rods are arranged in parallel with viscoelastic material steel plate lamination core pad, can provide larger vertical tension and compression bearing capacity; The adjustment of the vertical tension and compression bearing capacity of whole device can be realized by the number of regulating spring viscoelastic material rod and size, along with spring viscoelastic material rod number and viscoelastic material rod cross sectional dimensions increase, vertical tension and compression bearing capacity will increase.
Viscoelastic material rod in spring viscoelastic material rod is freely placed on outer hoop spring inner, and viscoelastic material rod upper and lower side is not connected with lower steel plate and upper steel plate, and when can ensure vertical tension, viscoelastic material is excellent freely departs from, and is not drawn bad; When lower steel plate pressurized on device and level are to relative motion, viscoelastic material rod occurred level together with outer hoop spring plays energy-dissipating and shock-absorbing effect to shearing reciprocal transformation.。
The periphery that spring viscoelastic material rod is positioned at viscoelastic material steel plate lamination core pad is centrosymmetric layouts, can isolate and reduce the horizontal vibration in any direction, unrestricted and retrain.
Beneficial effect: a kind of multidimensional viscoplasticity seismic isolation device of the present invention, has the following advantages:
1 have simultaneously level to vertical shock insulation and damping capacity;
2 shortcomings effectively improving common earthquake isolating equipment resistance to tension difference;
3 simple structures, energy consumption effect are good, cheap, easy for installation.It can be widely used in the multi-direction vibration suppression of large-span structure, bridge construction, Important building, precision surface plate, frame for movement, military project structure.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention,
Fig. 2 is spring viscoelastic material rod 2 sectional views,
Fig. 3 is viscoelastic material steel plate lamination core pad 3 sectional view.
Have in figure: device lower steel plate 1, spring viscoelastic material rod 2, viscoelastic material steel plate lamination core pad 3, device upper steel plate 4, bolt 5, viscoelastic material rod 6, outer hoop spring 7, viscoelastic material layer 8, steel sheet 9.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
A kind of multidimensional viscoplasticity seismic isolation device of the present invention, this device comprises device lower steel plate 1, spring viscoelastic material rod 2, viscoelastic material steel plate lamination core pad 3, device upper steel plate 4 and bolt 5; Two block plates up and down and device upper steel plate 4, the device lower steel plate 1 of viscoelastic material steel plate lamination core pad 3 are fixed by bolt 5; Outer hoop spring about 6 two ends in spring viscoelastic material rod 2 and device upper steel plate 4, device lower steel plate 1 are welded and fixed.When device is subject to vertical tension and compression vibration and level to scissoring vibration, spring viscoelastic material rod 2 and the collaborative work of viscoelastic material steel plate lamination core pad 3, form the vertical and Horizontal Vibration energy of rigidity weak floor isolation, can there is tension and compression or shear strain and dissipate vibrational energy in the viscoelastic material simultaneously in spring viscoelastic material rod 2 and viscoelastic material steel plate lamination core pad 3 under vertical or Horizontal Vibration encourage.
Spring viscoelastic material rod 2 is made up of viscoelastic material rod 6 and outer hoop spring 7, the cross-sectional diameter generally 1 ~ 2mm less of the internal diameter of outer hoop spring 7 of viscoelastic material rod 6; When there is vertical or horizontal relative displacement in device, tension and compression or shear strain can be there is and dissipate vibrational energy in viscoelastic material rod 6, and viscoelastic material rod 6 is subject to the effect of contraction of outer hoop spring 7 when pressurized, in three dimension stress state, the vertical compression bearing of viscoelastic material rod 6 is increased, and simultaneously under vertical pressure effect, viscoelastic material rod is radial thicker, shearing area increases, and energy dissipation capacity gets a promotion.Viscoelastic material steel plate lamination core pad 3 is formed by viscoelastic material layer 8 and the sulfuration of steel sheet 9 HTHP, and the every layer thickness of viscoelastic material layer 8 is generally 2 ~ 5mm, and the every layer thickness of steel sheet 9 is generally 1 ~ 2mm; Compare with the agent structure added; viscoelastic material steel plate lamination core pad 3 forms rigidity weak floor in level to vertical; level as each layer pillar of building structure is compared to vertical rigidity; device level is to very little with vertical rigidity; encourage lower device just can play the effect of separating vibration in level to vertical motion; simultaneously because there is tension and compression or shear strain and dissipate vibrational energy in viscoelastic material layer 8; viscoelastic material layer 8 is wrapped in around steel sheet 9; the protective layer thickness of core pad is generally set to 1 ~ 3mm, protects steel sheet 9 and is not corroded.Outer hoop spring 7 upper and lower side in spring viscoelastic material rod 2 is fixed with upper steel plate, lower steel plate respectively, can select welding or screw thread spins.During device tension, outer hoop spring 7 provides pulling force, solves the problem of viscoelastic material steel plate lamination core pad 3 tension insufficient rigidity, tension destructible; Viscoelastic material steel plate lamination core pad 3 and spring viscoelastic material rod 2 are arranged in parallel, and can provide larger vertical tension and compression bearing capacity, spring viscoelastic material rod 2 generally adds 4 ~ 60, and spring can select the product of different spring constant according to actual needs; The adjustment of the vertical tension and compression bearing capacity of whole device can be realized by the number of regulating spring viscoelastic material rod 2 and size, along with spring viscoelastic material rod number and viscoelastic material rod cross sectional dimensions increase, vertical tension and compression bearing capacity will increase.
It is inner that viscoelastic material rod 6 in spring viscoelastic material rod 2 is freely placed on outer hoop spring 7, viscoelastic material rod 6 upper and lower sides are not connected with lower steel plate 1 and upper steel plate 4, when can ensure vertical tension, viscoelastic material is excellent freely departs from, do not drawn bad, and when lower steel plate pressurized on device and level are to relative motion, viscoelastic material rod 6 occurred level together with outer hoop spring 7 plays energy-dissipating and shock-absorbing effect to shearing reciprocal transformation.
Spring viscoelastic material rod 2 and viscoelastic material steel plate lamination core pad 3 layout in a center of symmetry, can isolate and reduce the horizontal vibration in any direction, unrestricted and constraint.

Claims (6)

1. a multidimensional viscoplasticity seismic isolation device, it is characterized in that, this device comprises device lower steel plate (1), spring viscoelastic material rod (2), viscoelastic material steel plate lamination core pad (3), device upper steel plate (4) and bolt (5); Wherein, spring viscoelastic material rod (2) and viscoelastic material steel plate lamination core pad (3) are positioned between device lower steel plate (1) and device upper steel plate (4), viscoelastic material steel plate lamination core pad (3) is positioned at centre, spring viscoelastic material rod (2) is positioned at the periphery of viscoelastic material steel plate lamination core pad (3), and two block plates up and down of viscoelastic material steel plate lamination core pad (3) are fixed by bolt (5) with this device upper steel plate (4), device lower steel plate (1) respectively; In spring viscoelastic material rod (2), the two ends up and down of outer hoop spring (7) are fixed with device upper steel plate (4), device lower steel plate (1) respectively; When device is subject to vertical tension and compression vibration and level to scissoring vibration, spring viscoelastic material rod (2) and core pad (3) collaborative work of viscoelastic material steel plate lamination, form the vertical and Horizontal Vibration of rigidity weak floor isolation, the viscoelastic material simultaneously in spring viscoelastic material rod (2) and viscoelastic material steel plate lamination core pad (3) is due to generation tension and compression, shear strain and dissipate vibrational energy.
2. a kind of multidimensional viscoplasticity seismic isolation device according to claim 1, it is characterized in that, described spring viscoelastic material rod (2) is made up of viscoelastic material rod (6) and outer hoop spring (7), and the intermediate coaxial that viscoelastic material rod (6) is positioned at outer hoop spring (7) is arranged; When there is vertical or horizontal relative displacement in device, compression or shear strain and dissipate vibrational energy can be there is in viscoelastic material rod (6), and viscoelastic material rod (6) is subject to the effect of contraction of outer hoop spring (7) when pressurized, in three dimension stress state, the vertical compression bearing of viscoelastic material rod (6) and energy dissipation capacity are all got a promotion.
3. a kind of multidimensional viscoplasticity seismic isolation device according to claim 1, it is characterized in that, described viscoelastic material steel plate lamination core pad (3) is formed by some viscoelastic material layer (8) and steel sheet (9) spacer stack, viscoelastic material steel plate lamination core pad (3) radial outer is viscoelastic material topping, and whole viscoelastic material steel plate lamination core pad (3) is made by HTHP sulfuration; When this device occurred level is to vibration, viscoelastic material steel plate lamination core pad (3) in level to formation rigidity weak floor, separating vibration energy transferring, simultaneously core space viscoelastic material because there is shear strain dissipate vibrational energy; During this device generation vertical motion, viscoelastic material steel plate lamination core pad (3) forms rigidity weak floor vertical, separating vibration energy transferring, owing to there is vertical compression and pressing pine and reciprocal transformation occurs, dissipate vibrational energy in core space viscoelastic material simultaneously; Be enclosed with viscoelastic material in the radial outer periphery of steel sheet and viscoelastic material layer laminate core pad, protect steel sheet (9) not by the corrosion of external environment.
4. a kind of multidimensional viscoplasticity seismic isolation device according to claim 1, it is characterized in that, the upper and lower side of outer hoop spring (7) is affixed with device upper steel plate (4), device lower steel plate (1) respectively, during device tension, outer hoop spring (7) provides pulling force, solves the problem of viscoelastic material steel plate lamination core pad (3) tension insufficient rigidity, tension destructible; Some spring viscoelastic material rods (2) and viscoelastic material steel plate lamination core pad (3) are arranged in parallel, and can provide larger vertical compression bearing; The adjustment of the vertical tension and compression bearing capacity of whole device can be realized by the number and size regulating viscoplasticity spring rod (2).
5. a kind of multidimensional viscoplasticity seismic isolation device according to claim 1 and 2, it is characterized in that, it is inner that viscoelastic material rod (6) in described spring viscoelastic material rod (2) is freely placed on outer hoop spring (7), viscoelastic material rod (6) upper and lower side is not connected with lower steel plate (1) and upper steel plate (4), when can ensure vertical tension, viscoelastic material is excellent freely departs from, and is not drawn bad; When lower steel plate pressurized on device and level are to relative motion, viscoelastic material rod occurred level together with spring plays energy-dissipating and shock-absorbing effect to shearing reciprocal transformation.
6. a kind of multidimensional viscoplasticity seismic isolation device according to claim 1,2 or 3, it is characterized in that, the periphery that spring viscoelastic material rod (2) is positioned at viscoelastic material steel plate lamination core pad (3) is centrosymmetric layout, can isolate and reduce the horizontal vibration in any direction, unrestricted and constraint.
CN201510170881.6A 2015-04-10 2015-04-10 A kind of multidimensional viscoplasticity seismic isolation device Active CN104805922B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106836925A (en) * 2016-12-28 2017-06-13 东南大学 A kind of multi-direction wide frequency domain every vibration damping/shake device
CN110241937A (en) * 2019-06-20 2019-09-17 海南大学 A kind of Self-resetting lead shear damper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5862638A (en) * 1996-05-13 1999-01-26 Applied Structures Technology Llc Seismic isolation bearing having a tension damping device
JP2002147528A (en) * 2000-11-14 2002-05-22 Nec Environment Eng Ltd Vibration isolating mount
CN202090453U (en) * 2011-03-31 2011-12-28 东南大学 Double-layer multi-dimensional shock absorption device
CN202611006U (en) * 2012-01-19 2012-12-19 中国江苏国际经济技术合作公司 Composite laminated rubber and annular steel rod seismic isolation device
CN204590297U (en) * 2015-04-10 2015-08-26 东南大学 A kind of multidimensional viscoplasticity seismic isolation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5862638A (en) * 1996-05-13 1999-01-26 Applied Structures Technology Llc Seismic isolation bearing having a tension damping device
JP2002147528A (en) * 2000-11-14 2002-05-22 Nec Environment Eng Ltd Vibration isolating mount
CN202090453U (en) * 2011-03-31 2011-12-28 东南大学 Double-layer multi-dimensional shock absorption device
CN202611006U (en) * 2012-01-19 2012-12-19 中国江苏国际经济技术合作公司 Composite laminated rubber and annular steel rod seismic isolation device
CN204590297U (en) * 2015-04-10 2015-08-26 东南大学 A kind of multidimensional viscoplasticity seismic isolation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106836925A (en) * 2016-12-28 2017-06-13 东南大学 A kind of multi-direction wide frequency domain every vibration damping/shake device
CN106836925B (en) * 2016-12-28 2019-01-29 东南大学 A kind of multi-direction wide frequency domain every vibration damping/shake device
CN110241937A (en) * 2019-06-20 2019-09-17 海南大学 A kind of Self-resetting lead shear damper

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