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Method for guiding seismic design of device-support system based on spring-quality model

A quality system and support system technology, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve problems such as the inability to define the degree of influence, the inability to quantify the impact of support on equipment response, etc.

Active Publication Date: 2018-11-20
SUZHOU NUCLEAR POWER RES INST +2
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Problems solved by technology

[0010] However, for the equipment installed on the support structure, if the equipment and the support structure are not considered as a whole in the seismic appraisal, but only the equipment is the analysis object, the existing methods cannot quantify the impact of the support on the equipment response, let alone define the degree of influence

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  • Method for guiding seismic design of device-support system based on spring-quality model
  • Method for guiding seismic design of device-support system based on spring-quality model
  • Method for guiding seismic design of device-support system based on spring-quality model

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Embodiment Construction

[0084] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0085] A method for instructing the seismic design of equipment-support systems based on the spring-mass model, comprising the following steps:

[0086] (1) Establish a spring-mass model with supporting equipment

[0087] Simplify the device and its support as a spring-mass system with two degrees of freedom, such as figure 1 shown. m 1 、k 1 、x 1 is the mass, stiffness and displacement relative to the ground of the equipment, m 2 、k 2 、x 2 is the mass, stiffness and displacement relative to the ground of the support, x g is the displacement of the ground under the action of the earthquake.

[0088] The equation of motion in the horizontal direction of the system is

[0089]

[0090] in,

[0091] By solving the characteristic equation of the system described in equation (1), let The natural frequency ω of the system can be obtained s...

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Abstract

The invention relates to the technical field of seismic design, in particular to a method for guiding seismic design of a device-support system based on a spring-quality model, comprising the following steps of: simplifying the device and support thereof into a first spring-quality system with two degrees of freedom, and simplifying the device in the absence of the support into a second spring-quality system with single degree of freedom; for the first spring-quality system, acquiring a deviation amount delta1 of the natural frequency of the system composed of the device and the support and the device natural frequency, and a deviation amount delta2 of the natural frequency thereof and the support natural frequency; acquiring the influence coefficient Rx of the support displacement response to the device and the influence coefficient Ra of the support acceleration response to the device; and guiding the seismic design of the device-support system according to the delata1, delta2, Rx and Ra. The invention may provide guidance for the seismic design of the device-support system by quantifying the influence of support on the device response, revealing the root cause of the support influence, and defining the degree of influence thereof.

Description

technical field [0001] The invention relates to the technical field of anti-seismic design, in particular to a method for instructing the anti-seismic design of an equipment-support system based on a spring-mass model. Background technique [0002] For the seismic identification of equipment, analysis methods, test methods, similar methods, seismic experience data methods, or a combination of the above methods can be used for reasoning and demonstration. However, no matter what kind of seismic identification method is used, earthquake simulation is an indispensable link, and the accuracy of earthquake simulation is directly related to the rationality of equipment seismic identification. For equipment that is not directly installed on the floor but uses a supporting structure, if the equipment is only used as the research object (for example, equipment installed on the foundation or pipeline), the earthquake resistance appraisal of the equipment generally adopts the following...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20G06F2119/14Y02T90/00
Inventor 谭晓惠张攀那福利高泉源周拥辉
Owner SUZHOU NUCLEAR POWER RES INST
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