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Anti-seismic control design method for ribbed structure with three defensive lines

A technology of three lines of defense and design method, applied in the direction of earthquake resistance, building components, etc., to achieve the effect of less economic loss and ensure the safety of life

Inactive Publication Date: 2009-11-11
BEIJING JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

[0005] Although the three-level and two-stage seismic design method will still play an important role in guiding the seismic design of engineering for quite a long time, the earthquake disasters that have occurred many times in the world in recent years have exposed the inadequacy of the design principles and methods based on bearing capacity. limitation

Method used

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  • Anti-seismic control design method for ribbed structure with three defensive lines

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Embodiment 1

[0024] Embodiment 1: as figure 1 As shown, the seismic control design method of the three lines of defense of the dense rib structure based on the dynamic reliability:

[0025] Step 1: Structural Design

[0026] According to the use place of the dense rib structure system, the composition form of each component is selected, in which the main frame is composed of section steel, section steel concrete, reinforced concrete beams and columns, and section steel, section steel concrete, and reinforced concrete with small section and bearing capacity are used in the main frame. The dividing strip divides several frames to form a grid cavity, and the grid cavity is a prefabricated block;

[0027] Step 2: Seismic Action

[0028] Select a ground acceleration power spectrum as the input earthquake action, combine the site category and design earthquake grouping, determine the parameter values ​​of the power spectral density function and the earthquake duration, according to the seismic...

Embodiment 2

[0038] Embodiment 2: The present invention provides a design method for anti-seismic control of the three lines of defense of dense rib structure based on dynamic reliability:

[0039] Step 1: Structural Design

[0040] According to the use place of the dense rib structure system, the composition form of each component is selected, in which the main frame is composed of section steel, section steel concrete, reinforced concrete beam or column, and section steel, section steel concrete, reinforced concrete with small section and bearing capacity are used in the main frame. The dividing strip divides several frames to form a grid cavity, and the grid cavity is a prefabricated block;

[0041] Step 2: Seismic Action

[0042] Select a ground acceleration power spectrum as the input earthquake action, combine the site category and design earthquake grouping, determine the parameter values ​​of the power spectral density function and the earthquake duration, according to the seismic...

Embodiment 3

[0062] Embodiment 3: The first step of the implementation process of the present invention is the preliminary design of the structure, the second step is the input of random earthquake action, the third step is the determination of the calculation model of the multi-channel seismic defense line of the dense rib structure, and the fourth step is the first transcendence failure based on the displacement The calculation of the dynamic reliability of the criterion (calculation index: interstory displacement angle) or the calculation of the dynamic reliability based on the cumulative damage damage criterion (calculation index: damage index), the fifth step is the structural design adjustment, if the reliability requirements are met, it will not be carried out Adjust, otherwise, after adjusting the structural design, calculate according to the process until the reliability requirements are met.

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Abstract

An anti-seismic control design method for a building structure selects the composition form of all parts according to the application situations of a ribbed structure system, determines the input intensities for frequent earthquake, basic fortification intensity earthquake and rare earthquake, and determines the structural computation model, namely determining the equivalent elastic plate model in the elastic stage, the rigid frame inclined compression bar model in the elasto-plastic stage and the beam-hinged frame model in the damage stage of the ribbed structure. The method considers the structural design control limit value as a random variable, utilizes a dynamical reliability theory to carry out structural design, can divide the earthquake function into a plurality of levels, can consider the variability of the structural parameters, leads the response and damage performance of the designed and built engineering structure to be within the expected range under various possible earthquake functions, ensures the safety of the life and the minimum economic loss, and carries out quantitative control design on the seismic response and damage.

Description

technical field [0001] The invention relates to an anti-seismic control design method for three lines of defense of a dense rib structure, which belongs to the technical field of buildings. Background technique [0002] The structural probabilistic limit state design method based on the reliability theory has gone through the following two stages of development: The development stage I is the empirical coefficient design method, also known as the semi-probability and semi-empirical design method, including the allowable stress design method based on the elastic limit and the design method based on the elastic limit. The damage stage design method based on the plastic limit; the development stage II is an approximate probabilistic design method, the most representative design method is the load and resistance coefficient design method, the Chinese code "Unified Standard for Reliability Design of Building Structures" (GB50068-2001) The approximate probabilistic design method i...

Claims

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Application Information

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IPC IPC(8): E04B1/98
Inventor 姚谦峰刘佩郭猛常鹏袁泉
Owner BEIJING JIAOTONG UNIV
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