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Earthquake response analysis method for building structure based on general rigidity eccentricity

A technology of building structure and response analysis, applied to building components, earthquake resistance, etc.

Inactive Publication Date: 2012-10-17
SHANGHAI UNIV
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Problems solved by technology

None of these can flexibly and accurately show the influence of different eccentric positions of arbitrary stiffness in space on the torsional vibration effect of the structure

Method used

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  • Earthquake response analysis method for building structure based on general rigidity eccentricity
  • Earthquake response analysis method for building structure based on general rigidity eccentricity
  • Earthquake response analysis method for building structure based on general rigidity eccentricity

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Embodiment Construction

[0045] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] The seismic response analysis method of a kind of general rigidity eccentric building structure of the present invention, its main steps are as follows:

[0047] 1) Polar coordinates are used to represent the stiffness eccentric position of each layer of the structure;

[0048] 2) Select a two-story structure model, determine the model parameters of the structure, and establish the dynamic equation of the general stiffness eccentric building structure under bidirectional earthquake action;

[0049] 3) Based on the power spectrum under horizontal earthquake action, the spectral intensity factor is unitized, and the translation-torsion coupling response analysis of general stiffness eccentric building structures is carried out in the frequency domain;

[0050] 4) Set different stiffness eccentricity positions for the structure, respecti...

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Abstract

The invention relates to an earthquake response analysis method for building structure based on general rigidity eccentricity, which comprises the following specific steps: 1, applying polar coordinates to represent the eccentric position of the rigidity center of each layer in a structure; 2, selecting a two-layer structure model, determining model parameters of the structure, and establishing a structural dynamic equation based on general rigidity eccentricity under a bilateral earthquake effect; and 3, based on the unitization of earthquake spectrum intensity factors, carrying out translation-torsion coupled response analysis on the building structure based on general rigidity eccentricity in the frequency domain. The method respectively analyzes the influences of coaxial and non-coaxial rigidity eccentricity on the translation-torsion response of the structure under the condition of general rigidity eccentricity, and obtains the arithmetic root mean square of planar center shift and acceleration of each layer in the structure through calculation. The innovation lies in that the polar coordinates are used to represent the non-coaxial eccentricity of the structure. The superiority lies in that the eccentric position of structural rigidity can be flexibly set, and the influence of general rigidity eccentricity on the structural earthquake response is presented.

Description

technical field [0001] The invention relates to a method for analyzing the vibration response of a building engineering structure, in particular to a method for analyzing the seismic response of a general rigidity eccentric building structure. Background technique [0002] With the rapid development of the economy, the population of central cities has increased sharply. In order to meet the needs of living space, human beings are constantly seeking development space underground and above ground; with the diversification of life elements, people are constantly pursuing visual and sensory beauty. , apply the concept of art to the exterior design of the building; make the building develop into the air while showing various buildings with unique shapes and complex structures in front of the world. In order to satisfy and reflect the economic strength and cultural characteristics of a certain city as far as possible, designers have made various buildings and structures of strange...

Claims

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Application Information

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IPC IPC(8): E04B1/98
Inventor 李春祥甘志兴
Owner SHANGHAI UNIV
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