Method for calculating the aseismic bearing capacity of structural members based on the performance level

A calculation method and technology of structural components, applied in calculation, computer-aided design, design optimization/simulation, etc., to achieve the effects of scientific seismic design method, improved calculation accuracy, and meeting design requirements

Active Publication Date: 2019-02-15
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

In essence, the performance-based seismic design should calculate the seismic bearing capacity of components based on the performance level (not the intensity), but there is no method for the seismic bearing capacity design of structural components based on the performance level

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  • Method for calculating the aseismic bearing capacity of structural members based on the performance level
  • Method for calculating the aseismic bearing capacity of structural members based on the performance level
  • Method for calculating the aseismic bearing capacity of structural members based on the performance level

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Embodiment Construction

[0018] In order to clarify the purpose, technical solutions and advantages of the present invention, the present invention will be further described in detail below by taking a reinforced concrete frame as an example and referring to examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] The method for designing the seismic bearing capacity of structural members based on the performance level of the present invention includes the following steps,

[0020] S1. Set different performance levels based on the maximum inter-story displacement angle of the structure, and calculate the displacement of the top of the structure at different performance levels.

[0021] S1-1. The maximum story displacement angle of the structure can represent different performance levels of the structure. The seismic code stipulates that the maximum story displacement angle of the reinforc...

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Abstract

The invention relates to the technical field of aseismic design. The method for calculating the aseismic bearing capacity of structural members based on the performance level of the invention comprises the following steps: setting different performance levels according to the maximum inter-story displacement angle of the structure to calculate the structural vertex displacement of different performance levels; The first mode displacement is determined according to the mass participation coefficient of the first mode and the vertex displacement of the structure with different performance levels; According to the displacement of the first mode, the displacement of the equivalent single-degree-of-freedom system is obtained. The first mode earthquake influence coefficients of different performance levels are obtained by choosing the ground motion suitable for the site. Based on the average value of the peak acceleration of several ground motions with different performance levels, the seismic influence coefficient is obtained according to the design response spectrum specified in the seismic code. Seismic Action of Structures with Different Performance Levels under Multiple Vibration Modes; Carry out the calculation of bearing capacity. Based on the performance level, the seismic design method is more scientific when the seismic bearing capacity of structural members is calculated.

Description

technical field [0001] The invention relates to the technical field of seismic design, in particular to a calculation method for the seismic bearing capacity of structural components. Background technique [0002] China's seismic code (GB 50011-2016) stipulates that the seismic intensities with a 50-year exceedance probability of 10%, 63% and 2% are frequent, basic and rare, respectively, and the seismic bearing capacity is based on the elastic seismic response of fortification frequent Spectrum, using mode shape decomposition method or bottom shear method to calculate seismic action, and combining seismic action effects to realize the calculation of seismic bearing capacity of components. American ASCE7, IBC is based on two-level conversion, converting 2 / 3 of the maximum earthquake that should be considered (corresponding to the "rare intensity" in the Chinese code) to the design earthquake (corresponding to the "basic intensity" in the Chinese code), based on the design re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F2119/06G06F30/20
Inventor 刘文锋
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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