CN211369118U - Hybrid passive control structure damping system - Google Patents

Abstract

The utility model discloses a mix passive control structure shock mitigation system, including first building structure and second building structure, be provided with middle shock insulation layer between first building structure's substructure and the superstructure, be provided with basic shock insulation layer between first building structure's substructure and the ground, be connected with buffering power consumption device between first building structure's superstructure and the second building structure, be connected with buffering power consumption device between first building structure's substructure and the second building structure, basic shock insulation layer and middle shock insulation layer all include at least three shock insulation support. The utility model provides a mix passive control structure shock mitigation system can still keep better shock attenuation and isolation effect under the seismic excitation of more wide band.

Description

Hybrid passive control structure damping system

Technical Field

The utility model relates to a shock attenuation technical field especially relates to a mix passive control structure shock mitigation system.

Background

In modern cities, due to the reasons of dense population, limited land resources and the like, a large number of densely arranged multi-story building groups exist, and due to individual differences or different construction (reconstruction) periods of the multi-story buildings, the overall design is lacked, so that the dynamic characteristics of all structural monomers are remarkably different, and the coordination of vibration (asynchronous vibration) cannot be realized. When the width of the shock-proof joint between the buildings cannot meet the requirement of vibration isolation, the adjacent structures may collide. Most typically, the horizontal displacement of a high-rise building using seismic isolation technology under the action of an earthquake (especially, a long-period earthquake) may be far greater than that of an adjacent non-seismic isolation building, so that the possibility of collision is increased sharply. At this time, if the passive energy dissipation and shock absorption device is adopted to connect the adjacent shock insulation and non-shock insulation buildings into a whole, the vibration of the structures can be utilized to restrain or reduce the vibration of the adjacent structures by optimizing the control parameters of the system, and the aim of mutual control is achieved. Moreover, the mechanisms of shock isolation and passive energy dissipation and shock absorption are different, and the damage of seismic excitation to the structure can be reduced in a wider frequency domain range by properly mixing the two different types of passive control devices.

In a seismic isolation system, a seismic isolation layer is located on the foundation of a building, and the additional acceleration of the structure is reduced at the expense of large displacement of the seismic isolation layer. To meet this displacement requirement, designers must provide large horizontal separator slots. However, the limited horizontal isolation slit structure and the like may be an obstacle to the application of seismic isolation. Inter-layer seismic isolation as a solution, additional layers can be added to existing structures without significantly increasing the lateral force requirements of the existing structures. However, compared with the base isolation technique, the interlayer isolation has little effect on reducing the seismic response of the lower structure of the isolation layer.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a hybrid passive control structure damping system, which can maintain a better shock isolation system with shock isolation effect when the earthquake in a wider frequency domain moves.

In order to achieve the above object, the utility model provides a hybrid passive control structure shock mitigation system, including first building structure and second building structure, be provided with middle shock insulation layer between first building structure's substructure and the superstructure, be provided with basic shock insulation layer between first building structure's substructure and the ground, be connected with buffering power consumption device between first building structure's superstructure and the second building structure, be connected with buffering power consumption device between first building structure's substructure and the second building structure, basic shock insulation layer and middle shock insulation layer all include at least three shock insulation support.

Preferably, the energy-consuming buffer device is a damper, and two ends of the damper are respectively and fixedly connected with the first building structure and the second building structure.

Preferably, the damper is a viscous damper, an oil damper or a viscoelastic damper.

Preferably, the energy-consumption buffering device is horizontally arranged.

Preferably, the isolation bearing is a lead core rubber isolation bearing, a rubber isolation bearing or a friction pendulum isolation bearing.

Preferably, at least one group of energy-absorbing buffer devices is connected between the upper structure of the first building structure and the second building structure.

Preferably, at least one set of energy-consuming buffer devices is connected between the substructure of the first building structure and the second building structure.

Preferably, the height of the intermediate seismic isolation layer from the ground is 1/3 to 2/3 of the total height of the first building structure.

Preferably, the upper end and the lower end of the seismic isolation support are respectively fixed with an embedded plate, and one end of the embedded plate, which deviates from the seismic isolation support, is fixed with an embedded connecting piece to be inserted into the ground or the first building structure.

The single shock insulation building has a good shock insulation effect under high-frequency short-period pulse excitation, but has a poor effect under long-period seismic excitation; and the adjacent structure connected with the damper has a better control effect under long-period and long-time vibration excitation, and has a poorer effect under pulse type earthquake vibration excitation. The hybrid passive control structure damping system provided by the embodiment can still keep a good seismic isolation and reduction effect under the seismic excitation of a wider frequency.

Drawings

Fig. 1 is the structural schematic diagram of the hybrid passive control structure damping system of the present invention.

In the figure, 1-a seismic isolation support, 2-a base seismic isolation layer, 3-a middle seismic isolation layer, 4-a lower structure of a first building structure, 5-an upper structure of the first building structure, 6-a buffering energy consumption device, 7-a second building structure and 8-a foundation.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, in the preferred embodiment, a hybrid passive control structure damping system includes a first building structure and a second building structure 7, wherein an intermediate isolation layer 3 is disposed between a lower structure 4 and an upper structure 5 of the first building structure, a base isolation layer 2 is disposed between the lower structure 4 of the first building structure and the ground, a buffering energy dissipation device 6 is connected between the upper structure 5 of the first building structure and the second building structure 7, a buffering energy dissipation device 6 is connected between the lower structure 4 of the first building structure and the second building structure 7, and the base isolation layer 2 and the intermediate isolation layer 3 each include at least three isolation bearings 1.

Specifically, the energy-consuming buffer device 6 is a damper, and two ends of the damper are respectively fixedly connected with the first building structure and the second building structure 7. The damper plays a good role in buffering, and can effectively reduce the structural acceleration. The damper is a viscous damper, an oil damper or a viscoelastic damper. The damper adopts the welding mode, welds both ends fixed part on first building structure and second building structure 7, and when need not connect the damper, the damper can be dismantled.

While building structures incorporating passive energy dissipation systems are effective for controlling long-term and sustained vibrations when adjacent structures are connected by dampers alone, they are not necessarily effective or recoverable for impulsive seismic vibrations, particularly high frequency impulses. When the pulse period is less than the self-oscillation period of the structure (high frequency pulse), the passive energy dissipation device may amplify the displacement, acceleration and input energy of the structure. When strong speed pulse acts, the first response peak value of the structure is maximum, and the weakening effect of the damper on the peak value is not obvious.

Preferably the height of the intermediate seismic isolation layer 3 from the ground is 1/3 to 2/3 of the total height of the first building structure. When the middle shock insulation layer 3 is arranged at a lower position, because the mass of the upper and lower structures is larger, the displacement and acceleration of the upper structure are gradually increased along with the increase of the floor number, and the structure overturning effect is more obvious for the high-rise shock insulation structure; when the middle shock insulation layer 3 is arranged in the middle of the structure, the mass of the upper and lower structures approaches to balance, the overall displacement approaches to the translation of the upper and lower structures, the control on the structure overturning effect and the interlayer displacement angle is better, and the vibration control and the support displacement reach a relatively balanced state; when middle shock insulation layer 3 arranges that the structure is close to the top, it is all not ideal to the acceleration and the displacement control effect on top layer, and the attenuator can not provide effective control effect to upper portion (top) structure.

The buffering energy consumption device 6 is horizontally arranged. I.e. both ends of the damping and energy dissipating device 6 are connected to the first building structure and the second building structure 7 at the same height.

Specifically, the isolation bearing 1 is a lead core rubber isolation bearing 1, a rubber isolation bearing 1 or a friction pendulum isolation bearing 1.

Further, at least two energy-absorbing and damping devices 6 are connected between the superstructure 5 of the first building structure and the second building structure 7. The heights of the at least two energy-dissipating buffer devices 6 are not equal.

Further, at least two energy-absorbing and damping devices 6 are connected between the substructure 4 of the first building structure and the second building structure 7. At least one group of buffer energy consumption devices 6, the number and height of the buffer energy consumption devices in one group can be set according to the requirements of specific projects.

Specifically, the upper end and the lower end of the seismic isolation support 1 are respectively fixed with an embedded plate, and one end of the embedded plate, which deviates from the seismic isolation support, is fixed with an embedded connecting piece to be inserted into the ground or the first building structure.

When installing basic shock insulation layer 2, pre-buried board and pre-buried connecting piece down under the welding and fixing, then the die filling grout forms the ground foundation, afterwards, places isolation bearing 1 in pre-buried board top down and with the two fixed, fixes pre-buried board and last pre-buried connecting piece (go up pre-buried connecting piece and weld in pre-buried board top) in isolation bearing 1 top, installs first building structure's stirrup again afterwards to the formwork is pour and is formed first building structure.

When an earthquake comes, on one hand, due to the existence of the middle shock-insulation layer 3 and the basic shock-insulation layer 2, the self-vibration period of the first building structure is prolonged, and the earthquake response of the first building structure is reduced; on the other hand, deformation is mainly distributed on the base shock insulation layer 2 and the middle shock insulation layer 3, so that the displacement of the upper part of the first building structure is reduced, and meanwhile, the middle shock insulation layer 3 has a good energy consumption effect. In the long-period and long-time earthquake, because the adjacent structures are connected through the damper, the displacement of the shock insulation layer and the floor acceleration of the structure can be effectively reduced. Under the earthquake with wider frequency, the shock absorption and isolation effect is better.

The single shock insulation building has a good shock insulation effect under high-frequency short-period pulse excitation, but has a poor effect under long-period seismic excitation; and the adjacent structure connected with the damper has a better control effect under long-period and long-time vibration excitation, and has a poorer effect under pulse type earthquake vibration excitation. The hybrid passive control structure damping system provided by the embodiment can still keep a good seismic isolation and reduction effect under the excitation of seismic oscillation of a wider frequency range, and has strong robustness on seismic oscillation of different frequency ranges.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (9)

1. The utility model provides a hybrid passive control structure shock mitigation system, its characterized in that, includes first building structure and second building structure, be provided with middle shock insulation layer between the substructure and the superstructure of first building structure, be provided with basic shock insulation layer between the substructure and the ground of first building structure, be connected with buffering power consumption device between the superstructure of first building structure and the second building structure, be connected with buffering power consumption device between the substructure of first building structure and the second building structure, basic shock insulation layer and middle shock insulation layer all include at least three shock insulation support.

2. The hybrid passive control structure damping system of claim 1, wherein the energy-dissipating device is a damper, and both ends of the damper are fixedly connected to the first building structure and the second building structure, respectively.

3. The hybrid passive control structure damping system of claim 2, wherein the damper is a viscous damper, an oil damper, or a viscoelastic damper.

4. The hybrid passive control structure damping system of claim 1, wherein the damping and energy dissipating devices are horizontally disposed.

5. The hybrid passive control structure damping system of claim 1, wherein the isolation bearing is a lead rubber isolation bearing, a rubber isolation bearing, or a friction pendulum isolation bearing.

6. The hybrid passive control structure damping system of claim 1, wherein at least one set of energy-dissipating, damping devices is coupled between the superstructure of the first building structure and the second building structure.

7. The hybrid passive control structure damping system of claim 1, wherein at least one set of energy-dissipating, cushioning devices is coupled between the substructure of the first building structure and the second building structure.

8. The hybrid passive control structure damping system of claim 1, wherein the intermediate shock-isolated layer has a height from the ground of 1/3 to 2/3 of the total height of the first building structure.

9. The hybrid passive control structure damping system of any one of claims 1 to 8, wherein pre-embedded plates are fixed to upper and lower ends of the isolation bearing, respectively, and pre-embedded connectors are fixed to ends of the pre-embedded plates away from the isolation bearing to be inserted into the ground or the interior of the first building structure.

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