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Method for analyzing collapse of multi-story RC frame structure under earthquake

A technology of frame structure and analysis method, applied in the direction of earthquake resistance, building components, building structure, etc., to achieve the effect of simple solution and avoid discreteness

Active Publication Date: 2017-12-01
FUZHOU UNIV
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Problems solved by technology

However, due to the randomness of the ground motion input and the limited selection, as well as the approximation of the probability method, it is easy to cause the analysis results to have a large dispersion

Method used

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  • Method for analyzing collapse of multi-story RC frame structure under earthquake
  • Method for analyzing collapse of multi-story RC frame structure under earthquake
  • Method for analyzing collapse of multi-story RC frame structure under earthquake

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] Please refer to figure 1 , the present invention provides a method for analyzing the collapse of a multi-storey RC frame structure under the action of an earthquake, adopting reverse analysis thinking, first defining the earthquake intensity by the seismic characteristic quantity (the present invention selects the seismic peak acceleration a), and obtaining the earthquake through the critical state of structural collapse The solution set {a} of the seismic feature quantity for the collapse of the structure is calculated, and the collapse of the RC frame structure under any earthquake action can be judged from the solution set interval of the seismic motion parameters. Specifically include the following steps:

[0040] Step S1: Determine the plane layout and number of floors of the multi-storey RC frame structure, the cross-sectional size and rei...

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Abstract

The present invention relates to a method for analyzing the collapse of a multi-story RC frame structure under the earthquake. The method is characterized in that: without dividing the earthquake action through the seismic intensity level, based on the component coefficient of the seismic effect of the component, the importance of each component of the frame is embodied, and the collapse failure criterion of the structure is defined; and the thinking of reverse analysis is used, the solution of seismic characteristic quantities can be obtained through the collapse critical state of the structure, so that a characteristic quantity solution set of the collapse of the RC frame structure can be obtained, and the collapse of the structure under the earthquake can be analyzed and determined to realize the earthquake vulnerability analysis process.

Description

technical field [0001] The invention relates to a method for analyzing the collapse of a multi-storey RC frame structure under earthquake action. Background technique [0002] Earthquake disasters are likely to cause a large number of casualties and huge economic losses. As far as our country is concerned, the Tangshan earthquake in 1976 razed the entire Tangshan city to the ground, causing more than 240,000 deaths and direct economic losses of more than 5 billion yuan [1]. The Wenchuan earthquake in 2008 caused more than 80,000 deaths and direct economic losses of more than 800 billion yuan [2]. According to the statistics of casualties in earthquake disasters, more than 95% of the casualties are caused by the collapse of buildings and secondary disasters [3]. Among the representative civil buildings in my country, multi-storey RC frame structures account for more than 30% of the total buildings in my country [4]. Therefore, it is very necessary and urgent to study the co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50E04B1/20E04B1/98E04H9/02
CPCE04B1/20E04H9/02E04H9/025G06F30/13
Inventor 方圣恩张立森
Owner FUZHOU UNIV
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