An indoor post-earthquake three-dimensional virtual scene construction method considering non-structural components

A construction method and three-dimensional virtual technology, which is applied in 3D modeling, image data processing, special data processing applications, etc., can solve the problems of damage and casualties of non-structural components, and achieve low cost of scene simulation, easy operation, and strong repeatability. Effect

Active Publication Date: 2019-06-21
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

On August 8, 2017, in the 7.0-magnitude earthquake that occurred in Jiuzhaigou, Sichuan, no relevant reports of the collapse of urban fortification buildings were found, but serious casualties were caused by damage to non-structural components
[0003] At present, relevant researches are all focused on the earthquake damage prediction

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  • An indoor post-earthquake three-dimensional virtual scene construction method considering non-structural components
  • An indoor post-earthquake three-dimensional virtual scene construction method considering non-structural components
  • An indoor post-earthquake three-dimensional virtual scene construction method considering non-structural components

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Embodiment Construction

[0045] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0046] The invention provides a method for constructing an indoor three-dimensional virtual scene after an earthquake considering non-structural components.

[0047] Such as figure 1 As shown, the method includes the following steps:

[0048] S1: Model construction and calculation:

[0049] Firstly, structural analysis modeling and 3D scene modeling based on building information model are carried out. Then, the finite element numerical model of the building structure is established, and the earthquake motion is used as input. The elastic-plastic time history analysis method is used to solve the structural earthquake response, and the Dynamic response time history analysis;

[0050] S2: Destruction judgment of non-structural components:

[0051] First, ...

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Abstract

The invention provides an indoor post-earthquake three-dimensional virtual scene construction method considering non-structural components, and belongs to the technical field of civil engineering disaster prevention and reduction. The method comprises the following steps: firstly, carrying out model construction and calculation, including structure analysis modeling and three-dimensional scene modeling based on a building information model, and structure earthquake dynamic response time interval analysis; Then, carrying out non-structural component damage judgment, including calculation of seismic inertia force and friction force of independent non-structural components, and damage state judgment of the non-structural components based on a vulnerability database; And finally, carrying outthree-dimensional scene construction and visualization, wherein the three-dimensional scene construction and visualization comprises random falling of a ceiling panel under the action of seismic force, texture replacement of a partition wall damage effect and motion state simulation of an independent non-structural component. According to the method, a reasonable and realistic indoor non-structural component post-earthquake three-dimensional scene can be constructed, three-dimensional scene support can be provided for indoor emergency evacuation and rescue related virtual drills of a building,and the method can also be directly used for earthquake safety related teaching and propaganda.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and reduction in civil engineering, in particular to a method for constructing an indoor three-dimensional virtual scene after an earthquake considering non-structural components. Background technique [0002] With the improvement of the building's anti-collapse ability, the damage of non-structural components under earthquakes has become increasingly prominent, which has become an important cause of casualties. On August 8, 2017, in the 7.0-magnitude earthquake that occurred in Jiuzhaigou, Sichuan, there were no reports of the collapse of urban fortification buildings, but serious casualties were caused by damage to non-structural components. Take the InterContinental Hotel Jiuzhai Paradise, which caused the most casualties, as an example. The main steel reinforced concrete frame structure of the hotel remains intact, but the non-structural components such as the ceiling, doors and wi...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
Inventor 许镇张华振靳伟
Owner UNIV OF SCI & TECH BEIJING
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