Seismic Evacuation Simulation Study Of Fenghuang Village In Kunming

From the 1980s to the beginning of the 21st century,the villages in the city were in a period of rapid development,and the masonry structure was its main structural form.As a high-risk area in Yunnan Province,the masonry structure is characterized by poor anti-collapse capability and small deformation capacity.Once subjected to earthquakes,it is easy to cause large-scale casualties and property losses.The evacuation drill takes time and effort,and does not completely restore the real situation under the earthquake.Therefore,this paper establishes an equal-scale building structure and the overall structure model of Fenghuang Village in the software.The simulated personnel get the evacuation time RSET required by the residents during the earthquake,and use the incremental dynamic analysis to determine the available safe evacuation of the residential building.Time ASET,comparing RSET and ASET,results in casualties and provides scientific and effective theoretical and technical support for similar situations.Taking Fenghuang Village as the research object,this paper randomly distributed 208 questionnaires to the residents of Fenghuang Village through questionnaire survey.Combined with the statistical analysis function of SPSS20.0,we found relevant factors affecting earthquake evacuation,including education level,age,and earthquake evacuation.Relevant knowledge,escape route,choice of evacuation route,first psychological reaction,first behavioral response,etc.Detailed investigations were carried out on the residential buildings,road traffic,and earthquake emergency shelters in Fenghuang Village.At the same time,the characteristics of the evacuated personnel were summarized through field research data and domestic and foreign literature.The social force model was improved,and the AnyLogic simulation software was used to model the five typical residential buildings in Fenghuang Village.Considering the influence of furniture on seismic evacuation,the RSETs were obtained under the action of 8 degree basic fortification intensity earthquake and rare earthquake.With the aid of ABAQUS finite element software,the five-story masonry structure residential building was analyzed by incremental dynamic analysis,and the collapse time of each floor and the probability of safe escape of all floors were obtained under the action of 8 degree basic fortification intensity earthquake and rare earthquake.And use seismic identification criteria to estimate the seismic performance of the structure.In the end,the overall model of Fenghuang Village was determined,and the total evacuation time of personnel under the action of 8 degree basic fortification intensity earthquake and rare earthquake was determined.Compared with REST and ASET,it was found that when the 8 degree rare earthquake occurred in Kunming,Fenghuang Village Some houses will collapse and there will be a lot of casualties.The improved ant colony algorithm optimizes the evacuation path after the earthquake,which can improve the evacuation efficiency and provide a more effective scientific basis for the development of seismic evacuation scheme.