Seismic hazard risk evaluation of building by event tree analysis
Yang Jun-jun · Ziran zaihai xuebao · 2008
When drawing a building event tree analysis chart,the greatest ground acceleration is usually regarded as the condition,and the seismic motion of site is regarded as the initial condition.The seismic damage and chain of events are chronicled according to their order of occurrence,starting with non-damage,ground failure,seismic damage,fire and their subsequent damages.Real case studies indicate that with the increase of the seismic strength,the degree of seismic damage and seismic hazard risk increases.Hence,increasing the probability of non-damage and reducing the probability of seismic damage chain events are an important area of research on urban building's earthquake risk assessment.The use of event tree analysis explores the model of earthquake destruction,degree of damage,curve of seismic hazard,and the risk of earthquake of the factory warehouse building.The main causes of warehouse seismic hazard risk are the turnover of the support and the collapse of the warehouse building.Strategies to deal with the damage prevention are proposed.