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Method for analyzing anti-progressive collapse performance of large-span spatial structure

A technology of spatial structure and analysis methods, applied in special data processing applications, instruments, electrical digital data processing, etc., to avoid complex processes, improve work efficiency, and ensure consistency

Inactive Publication Date: 2015-08-05
EAST CHINA ARCHITECTURAL DESIGN & RES INST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention aims to provide a method for analyzing the progressive collapse performance of large-span spatial structures, which can realize the material nonlinearity of the structural material from elastic to elastic-plastic and then fracture failure, and the components under material nonlinearity. Realize the simulation analysis of the whole process of continuous collapse of the structure under the calculation of the large displacement, large rotation and even geometric nonlinearity of the discontinuous displacement field, as well as the calculation of complex collision-contact problems caused by component fracture damage

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  • Method for analyzing anti-progressive collapse performance of large-span spatial structure
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  • Method for analyzing anti-progressive collapse performance of large-span spatial structure

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[0052] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution, and provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

[0053] In this example, the long-span space steel roof of an airport terminal is taken as an example to analyze the progressive collapse performance. The highest elevation is 36.7m. The calculation model in the structural design stage of this embodiment is established with SAP2000, such as Figure 5 shown.

[0054] Such as figure 1 As shown, the steps of performing progressive collapse performance analysis include:

[0055] Step 1: Establish a refined finite element model for progressive collapse analysis in this embodiment.

[0056] 1) Firstly, the ABAQUS finite element analysis software is used to convert the SAP2000 mode...

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Abstract

The invention discloses a method for analyzing an anti-progressive collapse performance of a large-span spatial structure. The method can be applied to analysis of the anti-progressive collapse capacity of the structure after failure of damaged local members of a building structure due to explosion, car collision, earthquake and so on. The method takes failure time of the members, geometric nonlinearity, material nonlinearity and conditions of rupture, contact, collision and so on into account in analysis, and also takes the inertia and dynamic effect of the structure due to member failure into account, thereby simulating the anti-progressive collapse performance of the structure more accurately.

Description

technical field [0001] The invention relates to the field of progressive collapse analysis of structures, in particular to an analysis method for the anti-progressive collapse performance of large-span spatial structures, which can be applied to the analysis of structures after local component damage and failure of building structures caused by explosions, automobile impacts, earthquakes, etc. ability to resist progressive collapse. Background technique [0002] The progressive collapse of a building structure refers to a phenomenon in which local components of the structure are damaged due to accidents, and then other adjacent components are damaged successively, and finally a large-scale collapse of the structure or the collapse of the overall structure is formed that is disproportionate to the initial local damage. Once the progressive collapse of the building structure occurs, it will cause serious casualties and property losses. Therefore, in the design stage, attention...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 崔家春安东亚李承铭田炜
Owner EAST CHINA ARCHITECTURAL DESIGN & RES INST
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