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Double tuned inertial system

A technology of inertia and tuning quality, which is applied in the field of energy consumption and vibration reduction of civil engineering structures, can solve the problems of small structural dynamic response level, large mass of collision friction blocks, and dissipation of structural vibration energy, so as to achieve convenient and flexible installation of devices and improve Energy absorption effect and installation space saving effect

Active Publication Date: 2020-06-12
TONGJI UNIV
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  • Abstract
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Problems solved by technology

In the early stage of strong external effects such as earthquakes, the dynamic response level of the structure is small, and this type of vibration damping device cannot effectively and quickly dissipate the structural vibration energy due to the gap between the collision friction blocks and other reasons
In order to meet the higher performance requirements of the structure, the collision friction block type damper needs an additional collision friction block with a large mass, which is not easy to install and may cause safety problems of the structure under strong earthquakes and other effects
In addition, the existing tuned collision friction block damper mainly controls the low-order response of the structure, the control frequency band is narrow, and the tuning mechanism is single

Method used

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  • Double tuned inertial system

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Embodiment

[0025] Such as figure 1 As shown, a double-tuned inertial system includes an installation unit, a liquid inertial damping unit, a first-stage collision-friction tuned mass unit, and a second-stage tuned mass unit.

[0026] The installation unit includes an installation base 15 and a counter force plate 16 , the counter force plate 16 is vertically arranged on the installation base 15 , and the installation base 15 is provided with two slide rail grooves 14 parallel to each other and perpendicular to the counter force plate 16 .

[0027] The liquid inertial damping unit includes a primary liquid inertial unit, a secondary inertial unit and a connecting oil pipe 8 . Wherein, the primary liquid inertial unit includes a large oil cylinder 5, a first piston 6, and a first piston rod 4; the first piston 6 is fixedly connected with the first piston rod 4, and the first piston rod 4 passes through the large oil cylinder 5 and connects with the large oil cylinder 5. The axes of the oi...

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Abstract

The invention relates to a double-tuned inertance system in the civil engineering and energy infrastructure field. The system comprises a first-grade collision friction type tuning mass unit, a second-grade tuning mass unit, a liquid inertance damping unit and an installation unit. In the invention, a double damping tuning mechanism is established to adjust a system frequency and carry out dampingcontrol, and the frequency bandwidth of the effective damping control of the damping system is increased. The two grade tuning mass units and the liquid inertance unit are used to store energy. The nonlinear collision of a collision friction block and a liquid inertance damping dissipation structure are used to vibrate energy. Based on the quality synergy effect of the liquid inertance unit, additional mass required for the first-grade collision friction type tuning mass unit is greatly reduced, and a light-weight tuning damping device is provided. In addition, the inertance unit effectivelycontrols the deformation of the entire first-grade collision friction type tuning mass unit, the installation space of the device is saved, the efficiency of the internal damping energy consumption of collision friction block damping is improved, and the system has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of energy consumption and vibration reduction of civil engineering structures, and in particular relates to a double-tuned inertial capacity system. Background technique [0002] Energy dissipation and vibration reduction technology, by adding an energy dissipation and vibration reduction device at the part where the structure will move relative to each other, the device can generate a control force that resists the structural movement when the structure is forced to jointly bear the effects of earthquakes and wind vibrations, using its own The energy dissipation effect reduces the dynamic response of the structure itself, ensuring the functional requirements of the structure's safety, comfort and normal usability. [0003] As a relatively mature nonlinear energy dissipation and vibration reduction device in this field, the collision friction block damper absorbs and dissipates the vibration energy of the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021
Inventor 赵志鹏张瑞甫陈清军刘浩洋
Owner TONGJI UNIV
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