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Conservative Determination of Seismic Load Inputs for Seismic Qualification of Supported Equipment

A technology for supporting equipment and seismic loads, applied in design optimization/simulation, computer-aided design, instrumentation, etc., and can solve problems to be investigated, etc.

Active Publication Date: 2022-04-26
SUZHOU NUCLEAR POWER RES INST +2
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Problems solved by technology

[0009] For the seismic input determined by the above method, since there is no linear relationship between the response spectrum at the support of the equipment and the response spectrum of the floor above the equipment, whether it is a conservative treatment method for the seismic input of the equipment remains to be seen. study

Method used

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  • Conservative Determination of Seismic Load Inputs for Seismic Qualification of Supported Equipment
  • Conservative Determination of Seismic Load Inputs for Seismic Qualification of Supported Equipment
  • Conservative Determination of Seismic Load Inputs for Seismic Qualification of Supported Equipment

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0068] A conservative method for determining seismic load input for seismic qualification of supporting equipment comprising the steps of:

[0069] (1) Support impact analysis

[0070] 1. Establish a spring-mass model with supporting equipment

[0071] 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.

[0072] The equation of motion in the horizontal direction of the system is

[0073]

[0074] in,

[0075] By solving the characteristic equation of the system described in equation (1), let The natural frequency ω ...

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Abstract

The invention relates to a conservative method for determining the seismic load input with the seismic identification of supporting equipment, comprising the following steps: investigating the response spectrum of the previous floor of the equipment as the maximum stress intensity of the equipment when the earthquake is input; investigating and adopting the applicable technical specifications of the equipment The envelope acceleration given in is used as the maximum stress intensity of the equipment when the earthquake input is used; the maximum stress intensity of the equipment is investigated when the zero-period acceleration of the response spectrum of the first floor on the equipment is used as the earthquake input; 1.5 times the maximum value of the spectral value corresponding to the frequency band of the fundamental frequency of the equipment is used as the maximum stress intensity of the equipment when the earthquake is input; the equipment and its support are simplified into a spring mass model, and the stress of the equipment-support system under the action of the response spectrum of the installation floor is investigated Intensity, and compared with the maximum stress intensity obtained by the above-mentioned other methods; through the above-mentioned method, a conservative processing method for the seismic input of the equipment can be determined.

Description

technical field [0001] The invention relates to the technical field of anti-seismic design, in particular to a method for conservatively determining seismic load input with anti-seismic appraisal of support equipment. Background technique [0002] The equipment installed in the factory building is connected to the factory building in two ways, one is directly installed on the floor of the factory building, and the other is installed on the floor or wall of the factory building through a supporting structure. For the seismic identification of equipment, the source of the seismic load is the response spectrum of the plant floor obtained through the seismic analysis of the plant. For equipment directly installed on the ground of the factory building, the response spectrum of the corresponding floor can be directly used as the seismic input of the equipment. For the equipment installed on the floor or wall of the factory building through the support structure, the most reliable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14Y02E30/00
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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