Research On Earthquake Evacuation Of Experimental Teaching Building Based On BIM

Emergency evacuation of public buildings has always been one of the important research topics in the field of public safety.Due to the large number of personnel and high concentration,the teaching buildings and other public buildings of colleges and universities are the key areas for emergency evacuation.Earthquake is one of the main causes of serious damage of building system in the life cycle of building.From the actual case records at home and abroad,it can be found that the destruction of public buildings caused by the earthquake will seriously affect the evacuation operation,and the post-earthquake secondary disasters will increase the casualties.According to the existing research results,evacuation simulation analysis before the occurrence of emergency evacuation events can accurately simulate emergency evacuation actions,and the evacuation plan and optimization design based on the analysis results can greatly improve evacuation efficiency and ensure the safety of more people.Based on the above research ideas,this paper carries out relevant research on experimental teaching buildings in colleges and universities.Building informatization is one of the important technologies to promote the national strategy of building smart city and urban digital twin.In this paper,Building Information Modeling(BIM)technology platform is used to study the experimental teaching building of a university in Northeast China,and the cutting-edge technologies such as building earthquake response and damage analysis,fire simulation and evacuation are integrated.The evacuation behavior of the target building under the normal use conditions,under the influence of different earthquake effects,and under the influence of post-earthquake fires is systematically and meticulously analyzed by numerical simulation.On this basis,the emergency evacuation action under various conditions is optimized through the design scheme,and the research results with good scientific research value and practical engineering significance are obtained.Details are as follows:(1)According to the disaster prevention and mitigation requirements of digital city and smart city,BIM technology platform,building earthquake damage analysis technology,fire analysis technology and personnel evacuation technology are used to design and construct evacuation analysis method of digital city after earthquake and secondary disasters based on BIM technology platform.(2)Based on BIM technology platform system,and completed the research object of college experimental teaching building construction building earthquake damage and evacuate after analysis,draw lessons from the domestic and foreign relevant evacuation design of research results and experience of emergency evacuation of the actual cases,from two aspects of staff behavior and building system to optimize evacuation design and complete scheme of simulation analysis;The simulation of the evolution process of the post-earthquake disaster(mainly for post-earthquake fire)in the experimental teaching building of the university is completed,the evacuation analysis of personnel under the coupling influence of the earthquake and post-earthquake secondary disaster is carried out,and the optimization design and program simulation analysis are completed.(3)Based on the results of calculation and analysis in this paper,a new optimal design idea and scheme for emergency evacuation of university public buildings after earthquake is proposed.Research topic of this paper focuses on heavy difficult problem in the field of public safety in our country,makes every effort to solve the actual demand of our wisdom urban disaster prevention and mitigation,related work and research results for safe evacuation of public construction in colleges and universities give some reference to related research and practical work,have good scientific research significance and engineering practical value.