The Assessment Of Earthquake Evacuation Hedge Based On Seismic Performance Analysis

In recent years,the level of seismic performance of buildings in our country have been improved,but the popularity of earthquake safety education is not high.It's not known what to do in earthquake escape for most people,and the error escape behavior are likely to result in personal injury or collective.However,due to the uncertainty of the building structure and the earthquake,it is very difficult to carry out the safety education for the earthquake escape.The earthquake escape drill has even proved to be wrong which is limited to form.Therefore,it is necessary to choose the way of earthquake escape for the specific building and the specific environment.A public building is selected as the research object,using ETABS to analysis the seismic performance(including push-over analysis and time history analysis),obtaining the base shear-top displacement curve,the displacement curve,the capacity spectrum and demand spectrum curve,the displacement response curve,the story drift angle,the plastic hinge distribution diagram and each layer displacement map.Through the above results,check the seismic performance of the overall structure and find out the relatively weak position of the structure.Based on the analysis of seismic performance of structures and the related research of earthquake escape,Three different methods of earthquake evacuation were formulated for the different parts of the building,namely "direct evacuation","first hedge,then evacuated" and "the nearest dodge".Finally,use software to simulate the evacuation hedge,getting the use of the building door,the load level of the stairs,the use of the hedge,the evacuation time and path,the evacuation density and the congestion situation.Through analyzing simulation results,relevant suggestions and evacuation hedge scheme are introduced.Through structural static analysis,dynamic analysis and the research of earthquake disaster hedge characteristics,the plan for earthquake evacuation is formulated for different parts of the building,avoiding the misunderstanding of "one-size-fits-all kind" earthquake escape way.Provide a basis that help the staff of building to assist ordinary people for earthquake escape,and provide a evacuation reference for other public buildings in the earthquake or other emergency situations.Therefore,the research of this paper have certain practical significance.