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

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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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 of non-structural components (He Siwei, Qu Zhe, Zhou Huimeng, et al. Review of seismic performance test methods of non-structural components[J]. Chinese Journal of Civil Engineering, 2017(09):20-31 .), there is no related method for indoor 3D scene construction of buildings considering earthquake damage of non-structural components

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