WO2019024552A1 - Palier d'amortissement et d'isolation sismiques tridimensionnel à pendule à frottement à réinitialisation automatique - Google Patents

Palier d'amortissement et d'isolation sismiques tridimensionnel à pendule à frottement à réinitialisation automatique Download PDF

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Publication number
WO2019024552A1
WO2019024552A1 PCT/CN2018/084952 CN2018084952W WO2019024552A1 WO 2019024552 A1 WO2019024552 A1 WO 2019024552A1 CN 2018084952 W CN2018084952 W CN 2018084952W WO 2019024552 A1 WO2019024552 A1 WO 2019024552A1
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WIPO (PCT)
Prior art keywords
plate
support plate
horizontal
damping
self
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PCT/CN2018/084952
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English (en)
Chinese (zh)
Inventor
王浩
郑文智
祝青鑫
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东南大学
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Application filed by 东南大学 filed Critical 东南大学
Publication of WO2019024552A1 publication Critical patent/WO2019024552A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • 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

Definitions

  • the invention relates to a self-resetting friction pendulum three-dimensional seismic isolation bearing, belonging to the technical field of seismic isolation (vibration) control of bridges, houses and the like in the field of civil engineering.
  • the key to the problem is that the energy consumption of the traditional friction pendulum isolation bearing is mainly based on the friction material itself, and the friction damping material performance is mainly used.
  • Earthquake is a random load.
  • the damping coefficient of the friction damping material of the traditional friction pendulum isolation bearing is constant, and its energy consumption capacity mainly depends on the energy consumption capacity of the friction damping material. As the use time increases, the material performance will gradually degrade and cannot reach the expected. The effect is difficult to adapt to the structural damping control under various extreme loads.
  • the viscoelastic high damping rubber material is a new functional material with strong deformation. It uses the strong viscoelasticity of its own to dampen the structural vibration. It has many advantages such as lighter weight, better fatigue resistance and better vibration damping performance. . At the same time, when subjected to external loads, the material's own viscoelasticity is used to dampen energy consumption, and external energy is converted into heat energy by viscous internal friction between molecular chains to consume external energy. This material is widely used in construction engineering and bridge engineering. In the field of mechanical engineering.
  • the object of the present invention is to provide a self-resetting friction pendulum three-dimensional seismic isolation bearing.
  • the energy consumption performance of the conventional friction pendulum isolation bearing limiting device is poor, and the energy-consuming friction material decreases with time, and is difficult to replace.
  • the utility model can only realize the horizontal isolation and can not realize the difficulty of vertical isolation.
  • the invention adopts the horizontal damping spring and the viscoelastic high damping rubber material to improve the durability and the seismic isolation performance of the friction pendulum isolation bearing.
  • the viscoelastic high damping rubber material is used to realize the flexible connection of the contact surface, avoiding the local damage of the member under the sudden extreme load such as strong earthquake, and realizing the three-dimensional seismic isolation under the extreme loads such as earthquake and typhoon.
  • a self-resetting friction pendulum three-dimensional seismic isolation mount comprises an upper support plate, an articulated slide, a spherical slide plate, a lower support plate, a horizontal shock absorption spring, a reaction force plate, a shock absorption layer, and a vertical a damping spring, a friction pad, a dust seal, a bolt hole, a slider cavity, a power consumption ring, a guide rod; wherein a concave blind hole is formed in a middle portion of the lower support plate, The bottom of the blind hole is provided with a vertical damping spring, the upper part of the vertical damping spring is connected with the spherical sliding plate, the upper part of the spherical sliding plate is provided with an articulated slider, and the upper spherical surface of the hinged sliding block is located at the lower part of the upper supporting plate In the cavity, a reaction plate is arranged around the upper part of the lower support, and the horizontal damping spring is located between the reaction plate and the outer peripheral wall of the slider cavity.
  • the upper support plate and the hinged slider are flexibly connected through the shock absorbing layer, and the hinged slider can be freely rotated at any angle in the slider cavity to realize vertical energy absorbing shock, and the shock absorbing layer is a viscoelastic high damping material. (such as high damping rubber).
  • the hinged slider and the spherical sliding plate are closely connected by a friction pad, and the friction pad is a low friction material.
  • the inner bottom surface of the lower support plate and the lower surface of the spherical slide plate are both rough surfaces to increase the connection between the shock absorbing layer and the lower support plate and the spherical slide plate.
  • the horizontal damping spring is provided with a horizontal guiding rod, and the horizontal guiding rod is freely expandable and contractible with the horizontal damping spring.
  • the horizontal damping spring is provided with an energy consumption ring, and the horizontal damping spring can consume energy through the energy consumption ring when the compression is compressed, and the energy consumption ring is a viscoelastic high damping material (such as high damping rubber).
  • the top of the reaction plate and the lower part of the upper support plate are flexibly connected by a dustproof ring, and bolt holes are provided on the outer periphery of the upper support plate and the lower support plate to achieve a firm connection with the upper structure and the lower structure.
  • the maximum amount of compression of the horizontal damper spring when pressed is the distance from the inner surface of the reaction plate to the outer edge of the spherical slider.
  • the bottom of the inner cavity of the lower support plate is provided with a shock absorbing layer of a vertical damper spring, and the lower support plate and the spherical slide plate are connected to the vertical damper spring through the shock absorbing layer.
  • the horizontal damping spring is used to make the limit plate uniformly stressed by the horizontal damping spring when the horizontal displacement of the friction pendulum isolation bearing occurs;
  • the pressure-receiving side and the tension-side horizontal damping spring both provide the reaction force, and the horizontal damping spring makes the reaction plate evenly stressed;
  • the friction pendulum isolation bearing When the maximum allowable displacement is reached under strong earthquakes, the horizontal damping spring on the pressure side reaches the maximum compression amount, providing horizontal pressure.
  • the horizontal damping spring realizes the deformation energy consumption by compressing the energy consumption circle, and the horizontal damping spring on the tension side The horizontal pulling force is still provided, which doubles the self-resetting ability of the friction pendulum isolation bearing.
  • the reaction plate plays the role of the limit plate. Due to the action of the horizontal spring, the impact resistance of the self-resetting friction pendulum isolation support is obviously improved, and the position plate is prevented from being partially caused by the collision with the hinged slider. Damage, even serious damage.
  • the friction pendulum isolation bearing is provided with a damping layer and a vertical damping spring in the lower part of the spherical sliding plate, which has significant deformation and friction energy consumption capability.
  • the spherical slide plate and the lower support plate are connected by a shock absorbing layer and a vertical damper spring.
  • the damping layer under the spherical sliding plate at the hinged slider and the vertical damping spring compress and deform the energy, and the vibration damping under the other side of the spherical sliding plate
  • the layer and vertical damping springs are subjected to tensile deformation and energy consumption, and vertical shock absorption can be realized.
  • the design idea of the invention is to enhance the support limit capability and realize multi-dimensional shock absorption.
  • the energy consumption circle is used to realize the compression deformation energy consumption.
  • the present invention multiplies the performance of the horizontal damping spring while increasing the energy consumption performance on the basis of the uniform force of the reaction plate.
  • the invention is applicable to various engineering structures, and the three-dimensional seismic isolation and isolation can be realized by the horizontal damping spring, the energy consumption ring and the vertical damping layer.
  • Figure 1 is a cross-sectional view of the self-resetting friction pendulum three-dimensional seismic isolation mount of the present invention
  • FIG. 2 is a top plan view of a three-dimensional seismic isolation mount of a self-resetting friction swing of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 1;
  • Figure 5 is a detailed view of the member 13 of Figure 1;
  • the figure includes: upper support plate 1; hinge slide 2; spherical slide 3; lower support plate 4; horizontal shock absorbing spring 5; reaction plate 6; shock absorbing layer 7; vertical damper spring 8; Pad 9; dust ring 10; bolt hole 11; slider cavity 12; energy consuming ring 13; horizontal guide bar 14.
  • the invention relates to a self-resetting friction pendulum three-dimensional seismic isolation bearing, comprising an upper support plate; an articulated sliding block; a spherical sliding plate; a lower supporting plate; a horizontal damping spring; a reaction plate; a damping layer; Shock absorbing spring; friction pad; dust ring; bolt hole; slider cavity; energy consumption ring;
  • the bottom of the inner cavity of the lower support plate is provided with a shock absorbing layer and a vertical damper spring, and the lower support plate and the spherical slide plate are connected with the vertical damper spring through the shock absorbing layer, and the inner bottom surface of the lower support plate and the spherical slide plate
  • the bottom surface is a rough surface, which can enhance the connection between the shock absorbing layer and the lower support plate and the spherical slide plate.
  • the hinged slider and the spherical sliding plate are closely connected by a friction pad, and the friction pad is a low friction material and has a uniform thickness.
  • the upper support plate and the hinged slider are flexibly connected by the shock absorbing layer, and the hinged slider is freely rotatable at any angle in the slider cavity, and vertical energy absorbing shock can be realized.
  • One end of the horizontal damping spring is connected with the upper support plate, the other end is connected with the reaction plate, the horizontal damping spring is provided with an energy consumption ring, and the outer circumference is provided with a horizontal guide bar, and the horizontal guide bar can be freely extended and contracted with the horizontal damping spring. And to ensure that the damping spring is deformed in the horizontal direction, when the horizontal damping spring is pressed, the energy consumption ring can realize energy consumption by compression deformation.
  • the bottom of the reaction plate and the lower end of the outer end of the upper support plate are flexibly connected by a dustproof ring, and bolt holes are provided on the outer periphery of the upper support plate and the lower support plate to achieve a firm connection with the upper structure and the lower structure.
  • the maximum amount of compression of the horizontal damper spring when pressed is the distance from the inner surface of the reaction plate to the outer edge of the spherical slider.
  • the horizontal damper spring is evenly arranged along the center of the reaction plate and the upper support plate to ensure that the horizontal damper spring and the reaction plate are uniformly stressed; the vertical damper spring is evenly arranged on the inner bottom surface of the lower support plate
  • the two ends of the guiding rod are respectively connected with the inner side of the reaction plate and the upper supporting plate, and a certain rotation angle can occur.
  • the shock absorbing layer and the energy consuming ring are viscoelastic high damping materials, maintain a suitable thickness, and utilize the strong deformation capability to realize energy consumption.
  • a lower gap is formed between the lowermost end of the slider cavity and the outermost end of the hinged slider, so that a certain rotation angle of the hinged slider during the sliding process can be ensured, and the upper support plate is co-deformed.
  • the initial stiffness of the spring is set according to the seismic fortification requirements.
  • the self-resetting friction pendulum three-dimensional seismic isolation mount comprises: an upper support plate 1; a hinged slide 2; a spherical slide plate 3; a lower support plate 4; Spring 5; reaction plate 6; shock absorbing layer 7; vertical damper spring 8; friction pad 9; dust ring 10; bolt hole 11; slider cavity 12; energy consuming ring 13; horizontal guide bar 14.
  • the bottom of the inner cavity of the lower support plate 4 is provided with a shock absorbing layer 7, a vertical damper spring 8, and the lower support plate 4 and the spherical slide plate 3 pass through the shock absorbing layer 7, vertical
  • the shock absorbing springs 8 are connected, and the inner bottom surface of the lower support plate 4 and the lower surface of the spherical slide plate 3 are both rough surfaces, and the connection between the shock absorbing layer 7 and the lower support plate 4 and the spherical slide plate 3 can be enhanced.
  • the articulated slide 2 is intimately connected to the spherical slide 3 via a friction pad 9.
  • the upper support plate 1 and the hinged slider 2 are flexibly connected by the shock absorbing layer 7, and the hinged slider 2 is freely rotatable at any angle in the slider cavity 12, and vertical energy absorbing shock can be realized.
  • the top edge of the upper support plate 1 is evenly provided with bolt holes 11 to achieve a firm connection with the upper structure.
  • the bottom edge of the bottom plate of the lower support plate 4 is evenly provided with bolt holes 11 to achieve a firm connection with the lower structure.
  • One end of the horizontal shock absorbing spring 5 is connected to the upper support plate 1 , the other end is connected to the reaction force plate 6 , the horizontal shock absorbing spring 5 is provided with an energy consumption ring 13 , and the outer circumference is provided with a horizontal guide rod 14 , and the horizontal guide rod 14 can be
  • the horizontal damper spring 5 is freely stretched and contracted, and the horizontal damper spring 5 is deformed in the horizontal direction; when the horizontal damper spring 5 is compressed and deformed, the energy consuming ring 13 can be consumed by compression deformation.
  • the top of the reaction plate 6 and the lower end of the outer end of the upper support plate 1 are flexibly connected by the dust seal 10, and the dust seal 10 can be freely extended and contracted horizontally and vertically.
  • the maximum amount of compression when the horizontal damper spring 5 is pressed is the distance from the inner surface of the reaction plate 6 to the outer edge of the spherical slider 3.
  • the reaction plate 6 plays a limiting role. Due to the action of the horizontal damping spring 5, the impact resistance of the self-resetting friction pendulum isolation bearing is obviously improved, and the reaction plate 6 is avoided and the hinged slider 2 is avoided. Local damage occurs even in the event of a collision.
  • the self-resetting friction pendulum three-dimensional seismic isolation bearing is provided with a damping layer 7 and a vertical damping spring 8 at the lower portion of the spherical sliding plate 3, which has significant deformation and friction energy consuming capability.
  • the spherical skateboard 3 and the lower support plate 4 are connected by the shock absorbing layer 7 and the vertical damper spring 8, and under the vertical earthquake, when the hinged slider 2 slides toward the edge of the spherical slide 3, the hinge is slid
  • the damping layer 7 below the spherical sliding plate 3 at block 2 the vertical damping spring 8 consumes energy by compression deformation, and the damping layer 7 on the other side of the spherical sliding plate 3 and the vertical damping spring 8 are subjected to tensile deformation and energy consumption.
  • Vertical shock absorption is provided with a damping layer 7 and a vertical damping spring 8 at the lower portion of the spherical sliding plate 3, which has significant deformation and friction energy consuming capability.

Abstract

La présente invention concerne un palier d'amortissement et d'isolation sismiques tridimensionnel à pendule à frottement à réinitialisation automatique. Un trou borgne évidé est disposé dans une partie centrale d'une plaque de palier inférieure (4). Une couche d'amortissement (7) et un ressort d'amortissement vertical (8) sont disposés au fond du trou borgne évidé. Une partie supérieure du ressort d'amortissement vertical (8) est reliée à une plaque coulissante sphérique (3). Un coulisseau articulé (2) est disposé sur une partie supérieure de la plaque coulissante sphérique (3), et une surface sphérique supérieure du coulisseau articulé (2) est située à l'intérieur d'une cavité de réception de coulisseau (12) disposée au niveau d'une partie inférieure d'une plaque de palier supérieure (1). Une plaque de réaction (6) est disposée sur la périphérie d'une partie supérieure de la plaque de palier inférieure (4), et un ressort d'amortissement horizontal (5) est situé entre la plaque de réaction (6) et une paroi périphérique externe de la cavité de réception de coulisseau (12). Le ressort d'amortissement horizontal (5) et la couche d'amortissement verticale (7) sont utilisés pour améliorer la durabilité et les performances d'isolation sismique d'un palier d'isolation à pendule à frottement. L'utilisation du ressort d'amortissement horizontal (5) tire parti des pleines capacités d'absorption d'énergie de la plaque de réaction pour assurer que la structure peut effectuer un amortissement et une isolation sismiques sous des charges extrêmes telles que des tremblements de terre et des typhons.
PCT/CN2018/084952 2017-08-04 2018-04-27 Palier d'amortissement et d'isolation sismiques tridimensionnel à pendule à frottement à réinitialisation automatique WO2019024552A1 (fr)

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CN201710660562.2A CN107604810A (zh) 2017-08-04 2017-08-04 一种自复位摩擦摆三维减隔震支座
CN201710660562.2 2017-08-04

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