| In recent years,a large number of urban complex buildings have emerged.The building is huge in volume and complex in space structure.When a fire breaks out,it is difficult for people to evacuate and escape quickly.Firefighters and rescuers are unable to know the situation of the fire field in time,which is very likely to cause casualties for rescue workers.Therefore,research on fire evacuation management of buildings is very important.important.In this paper,the building fire information model is established by using BIM technology,and the optimized adaptive ant colony algorithm is used to plan the fire evacuation path of the urban complex building.The three-dimensional display characteristics of WebGL technology are used to display the path on the evacuation platform,which can realize the fire protection of the building.Real-time management of equipment information,fire warning.The main results of the paper are as follows:(1)Establishment of a building fire protection information model.Taking the urban complex architecture as the research object,the building was truly restored based on BIM technology,and a complete 3D building fire information model was established.Based on this,a database is established to realize the entry,update and management of fire information.(2)Building fire evacuation path planning based on adaptive ant colony algorithm.Based on the BIM technology-based building fire management model,the spatial network model of the building was established,and the ant colony algorithm was optimized.In the personnel selection strategy,the roulette algorithm was used to select the neighboring nodes in the fire channel,which improved.Algorithm accuracy,in terms of heuristic function,by adding the number of people in the building evacuationchannel,the equivalent length of the evacuation path is more realistic.In the process of algorithm realization,the building space plane is divided into grid maps.By extracting the fire evacuation node information in the building,the personnel activity index and the path traffic obstacle coefficient in the building fire evacuation channel are calculated,and the equivalent of the building evacuation channel is determined.Length,and based on Matlab,the experimental simulation comparison of the building fire evacuation path planning is carried out,and the dynamic optimization of the evacuation path in the building is realized.(3)The implementation of the building fire evacuation route is realized.The WebGL technology was used to construct the remote management system of urban complex building,which realized the remote management of fire protection information of urban complex and the three-dimensional network roaming of building fire information model on the PC,and realized the functions of querying and updating related fire equipment.On the platform,a simulation experiment was carried out on the fire in the atrium of the urban complex building,realizing the three-dimensional display of the building fire evacuation and rescue path at the browser end.In this paper,the BIM concept is applied to the fire evacuation research of urban complex buildings,which can meet the complex and flexible needs and objectives of the evacuation of personnel,and can better meet the evacuation requirements of urban complex buildings,making building fire evacuation more intelligent and safe.More scientific and fast. |
