Vibration and earthquake double-control design method giving priority to vertical industrial vibration isolation

Abstract

The invention provides a vibration and earthquake double-control design method giving priority to vertical industrial vibration isolation. The vibration and earthquake double-control design method giving priority to vertical industrial vibration isolation comprises the following steps of (1) arranging a vertical industrial vibration isolation device, wherein a spring vibration isolator is mounted (1) in the vertical direction of a building needing vibration isolation so as to achieve a vibration isolation effect; and (2) arranging a horizontal earthquake isolation device, wherein a viscous damper (2) is installed in the horizontal direction of the building needing earthquake isolation based on an original earthquake resistance. The steel spring vibration isolator, the viscous damper and the energy consumption design of the structure form a same-layer combined shock isolation system, firstly, the steel spring vibration isolator is used for carrying out integral and systematic modal optimization design and vibration isolation effect control, earthquake fortification checking calculation is carried out on the basis, and when deformation of the vibration isolator exceeds the limit, the viscous damper is configured for limiting and energy consumption, vibration and earthquake harm elimination is jointly achieved, vibration and earthquake double-control is met at the same time, the industrial vibration requirement is met, horizontal deformation of an earthquake isolation layer can be resisted, and safety, comfort and economical efficiency are all guaranteed.

Description

technical field [0001] The invention relates to the technical field of earthquake and vibration reduction, in particular to a vibration-vibration dual-control design method mainly for vertical isolation of industrial vibration. Background technique [0002] The building structure is affected by the vibration of rail transit, industrial environment, etc., and the engineering construction is faced with the dual requirements of vibration and earthquake. The dual effects of vibration and earthquake should be considered in the architectural design stage. At present, for the earthquake and vibration hazards faced by construction and equipment engineering, the control devices are all developed for a single control target, only considering the control of horizontal or vertical hazards, lacking a complete and systematic control method and boundary selection However, the "resistance" method or the "isolation" method alone cannot solve the vibration and earthquake problems at the same ...

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Problems solved by technology

[0003] (1) A single design method focusing on "resistance" leads to a large cross-sectional size of the building structure, which often leads to conflicts between the large cross-sectional size of the structure and the functional requirements of the building structure due to the main resistance; difficulties arise in process changes and upgrading During the service period, major equipment is often faced with upgrading and transformation, but the directional design results in low redundancy and cannot be upgraded; the dynamic characteristics of the structure and equipment are variable, due to the requirements of building functions, the operation mode and working conditions of the equipment , strain changes will lead to changes in the dynamic characteristics of the system, resulting in vibration changes

[0004] (2) Earthquake and vibration control adopts a design method based on the concept of "separation". It is necessary to use horizontal energy consumption to reduce earthquake shear damage, and vertical frequency modulation to avoid resonance. At the same time, the system needs to have high stability during the isolation process. Sometimes there is a certain difficulty in engineering

"Seismic isolation" buildings and equipment have low horizontal stiffness, long natural vibration period in the horizontal direction of the structure, and good seismic isolation effect, but the vertical stiffness of the structure is large, and the vertical vibration control efficiency is low

"Vibration isolation" buildings and equipment have good vibration isolation performance, especially vertical vibration control, but such buildings and equipment generally have high horizontal stiffness and limited earthquake isolation capability

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