Earthquake motion synthesis method and system

A synthesis method, a technology of ground motion, applied in the direction of seismic signal processing, etc., can solve problems such as fitting without considering the peak displacement of ground motion

Inactive Publication Date: 2010-04-21
CHINA EARTHQUAKE DISASTER PREVENTION CENT
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Problems solved by technology

However, when synthesizing artificial ground motions, none of the existin

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  • Earthquake motion synthesis method and system
  • Earthquake motion synthesis method and system
  • Earthquake motion synthesis method and system

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Embodiment Construction

[0051] The ground motion synthesis method and system proposed by the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0052] Such as figure 1 As shown, the ground motion synthesis method according to an embodiment of the present invention includes the following steps:

[0053] S1. Determine the multi-damping target acceleration response spectrum and target peak displacement through the calculation of the nuclear power plant site seismic safety assessment work, or through the relevant provisions of the nuclear power plant seismic design code.

[0054] Among them, the multi-damping target acceleration response spectrum determined in step S1 is S T (ω, ζ), the target peak displacement is D max T , S T The discrete control frequency of (ω,ζ) is ω j (j=1, 2,..., M), the control damping ratio is ζ k (k=1, 2, . . . , L), M is the number of frequencies controlled by the target response spectrum, and L is the number of...

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Abstract

The invention relates to earthquake motion synthesis method and system. The method comprises the steps of: determining a multi-damping target acceleration response spectrum and a target peak displacement; obtaining an initial earthquake motion time history; regulating the initial time history through superimposing narrowband time histories to obtain a target earthquake motion time history; and if the target earthquake motion time history meets the set precision requirement, determining the target earthquake motion time history as a final earthquake motion time history to be obtained, or else, returning the former step. The method and the system can be used for synthesizing an artificial earthquake motion time history which can simultaneously meet the earthquake motion peak displacement and the multi-damping earthquake motion acceleration response spectrum, and can ensure the engineering characteristic that the input artificial earthquake motion of nuclear engineering quake-proof design more completely simulates natural earthquake motion, thereby ensuring that nuclear engineering can safely resist the earthquake possibly occurring in the future.

Description

technical field [0001] The invention relates to the field of anti-seismic design of nuclear engineering, in particular to an artificial ground motion synthesis method and system for fitting peak displacement and multi-damping response spectrum. Background technique [0002] Energy and environmental issues are key issues facing the development of the national economy. Vigorously developing nuclear power is of great significance for optimizing energy structure, protecting energy security, actively responding to climate change and protecting the environment. At present, my country is vigorously developing the construction of nuclear power plants, and ensuring the seismic safety of nuclear engineering structures is one of the key issues facing nuclear power construction. [0003] The seismic design of nuclear engineering needs to synthesize the artificial ground motion time history satisfying the given conditions as the input of the structural system. In order to ensure the se...

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Application Information

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IPC IPC(8): G01V1/28G01V1/30
Inventor 张郁山赵凤新
Owner CHINA EARTHQUAKE DISASTER PREVENTION CENT
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