基于BIM模型的地下空间三维洪水浸没模拟分析

3D Flooding Simulation Analysis of Underground Space Based on BIM Model

为更加直观地评估地下空间洪水风险,需对洪水演进过程进行三维模拟分析。基于广州地铁18号线万顷沙车辆段办公楼地下室BIM模型,结合UE 5引擎软件,利用Fluid Flux流体模拟插件实现对该地下空间的洪水浸没过程动态三维模拟。根据各区域的水位变化情况,判断地下空间洪水浸没的淹没时间和人员疏散的逃生时间。结果表明,该方法可直观地展示地下空间洪水三维模拟过程,且整体模拟均为实时演算,相较于流体粒子数值模拟提高了模拟效率。

In order to evaluate the flood risk of underground space more intuitively,it is necessary to carry out three⁃dimensional simulation analysis of flood routing process.Based on the BIM model of the basement of the office building in Wanqingsha Depot of Guangzhou Metro Line 18,combined with the UE 5 engine software,the dynamic 3D simulation of the flood submergence process of the underground space is realized by using the Fluid Flux fluid simulation plug⁃in.According to the change of water level in each area,the submergence time of underground space and the escape time of personnel evacuation can be determined.The results show that the method can visually demonstrate the three⁃dimensional simulation process of flooding in the underground space,and the overall simulation is performed in real time,which improves the simulation efficiency compared with the fluid particle numerical simulation..