Research On Multi-paradigm Modeling Of Emergency Evacuation Based On AnyLogic

With the rapid development of urban construction throughout the country,disastrous emergencies frequently occur.Emergency evacuation is an important means to reduce catastrophic losses,and its research has important guiding significance for disaster risk assessment,the formulation of evacuation control measures,and the structural design of buildings.Due to the difficulty of implementing actual evacuation experiments,the current emergency evacuation research is mainly based on computer model simulation research,and the establishment of a real and reasonable emergency evacuation model has become the key to the research.However,the current evacuation models generally have the problems of single emergency scenario,low model reusability,poor operability,and insufficient scalability,resulting in a lack of flexibility in the solution and relatively difficult subsequent expansion.At the same time,most of the current evacuation models are difficult to describe the real-time impact of the disaster environment on the evacuated individuals,and there are certain errors in the evacuation simulation results.In response to the above problems,this research pioneered the combination of multi-paradigm modeling theory with the field of emergency evacuation,and proposed a multi-paradigm modeling method applied in the field of emergency evacuation to meet the requirements of building fire drill simulation and initial emergency response of building design.Based on the simulation requirements of multi-scheme design,Any Logic is used as the development platform,the scientific research building of our school is used as the evacuation physical environment,and the fire is used as the emergency environment design case model to verify the feasibility and reusability of the model.The main research content includes the following four parts:1.Propose modeling methods and model frameworkSort out and summarize the research status of emergency evacuation field and multi-paradigm modeling method,propose multi-paradigm modeling method applied to emergency evacuation field,and put forward a multi-paradigm model framework of emergency evacuation with numerical simulation layer,data layer and model description layer as the core,To determine the technical route for modeling the three major subsystems of evacuation individuals,evacuation events,and evacuation environment.2.Use the meta-model modeling method to establish each subsystemThrough the analysis of the factors affecting the evacuation of the individual in the fire scene,the evacuation individual meta-model is designed from the three aspects of physiological factors,psychological factors and external factors,and the designed individual meta-model is realized by the Agent multi-agent modeling and simulation method,and the evacuation individual is established.Subsystem: By analyzing the overall evacuation process of the building,comprehensively considering the influence of the guiding event on the evacuation process,designing the evacuation event meta-model for the time node of the evacuation system status change,using the discrete event modeling method to establish the evacuation event subsystem;comprehensive fire The simulation software CFAST and AnyLogic conduct joint simulation,and establish the smoke diffusion model and model database table,dynamically capture the coordinates of the evacuation individual to realize the real-time dynamic impact of the smoke on the evacuation individual in the building,and establish the evacuation environment subsystem.3.Establish subsystem interactionsTake the evacuation individual as the core of the subsystem interaction,realize the interaction between the subsystems through the Any Logic component interface settings,and realize the dynamic simulation of the evacuation process.The established model can observe the evacuation process and details of the evacuation process from 2D and 3D perspectives.4.Reusability simulation experimentConsidering the three aspects of building structure emergency performance design,building space safety capacity evaluation,and guiding signal time point setting,a large-scale simulation experiment was set up and a large number of analyses were carried out in conjunction with the evacuation process.The results showed that the width of stairs,the initial position of different evacuation individuals,The issuing time of the guidance signal will affect the evacuation process,and specific suggestions are put forward based on the experimental results.According to the purpose of the experiment,the evacuation system can be flexibly set up and adjusted by adjusting the meta-model parameters to meet the needs of the experiment.The feasibility of applying the multi-paradigm modeling method to the field of emergency evacuation and the flexible reusability of the multi-paradigm model are proved.The simulation results have practical reference value.In summary,this research proposes a new emergency evacuation system modeling method based on the Any Logic platform,which provides new models and ideas for emergency evacuation model research.The established multi-paradigm model fully considers the dynamic impact of building space and emergency environment on evacuated individuals,and has the advantages of reusability,operability and scalability.Experimental simulation research results show that the model can simulate the evacuation process more accurately.It provides a new way for relevant departments to conduct multi-scheme building fire simulation drills,building evacuation performance evaluation,and disaster prevention optimization analysis at the initial stage of building design at the application level model.