Xu Zhen, Yang Yajun, Zhu Yian, Fan Jingjing
Research Institute of Urbanization and Urban Safety, School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Sci Rep. 2023 Sep 30;13(1):16461. doi: 10.1038/s41598-023-43533-9.
The damaged indoor nonstructural components in the earthquake often cause casualties. To improve the indoor earthquake safety capacity of occupants, a mixed reality (MR) drill method for indoor earthquake safety considering seismic damage of nonstructural components is proposed. First, an MR device, HoloLens, is used to capture indoor point clouds, and the indoor three-dimensional scene is reconstructed using point clouds. Subsequently, the seismic motion models of indoor components are established, so that the indoor nonstructural seismic damage scene is constructed using the physics engine and displayed using HoloLens. Finally, a guidance algorithm for a safe zone was designed for the drills. Taking a typical office as an example, an indoor earthquake safety drill was performed. The drill results show that the proposed MR method can increase the average efficiency of moving to a safe zone by 43.1%. Therefore, the outcome of this study can effectively improve the earthquake safety ability of occupants, thereby reducing casualties.
地震中受损的室内非结构构件常常会造成人员伤亡。为提高居住者的室内地震安全能力，提出了一种考虑非结构构件地震损伤的室内地震安全混合现实（MR）演练方法。首先，使用MR设备HoloLens采集室内点云，并利用点云重建室内三维场景。随后，建立室内构件的地震运动模型，以便使用物理引擎构建室内非结构地震损伤场景并通过HoloLens进行展示。最后，为演练设计了安全区引导算法。以一个典型办公室为例，进行了室内地震安全演练。演练结果表明，所提出的MR方法可使转移至安全区的平均效率提高43.1%。因此，本研究成果能够有效提高居住者的地震安全能力，从而减少人员伤亡。
