城市建筑群地震灾害风险评估技术探索及应用

Technical Exploration and Application of Earthquake Disaster Risk Assessment for Urban Buildings

地震灾害风险评估是开展风险治理和隐患排查的重要手段,在分析研究国内外地震灾害风险评估研究现状的基础上,开展地震工程多学科的交叉研究,综合考虑震源破裂过程、地震动传播路径、场地条件、建筑结构地震响应等因素,构建城市建筑群地震灾害风险评估体系;以嘉兴市为研究示范区,基于设定地震和多概率地震危险性水平开展城市群体建筑结构地震时程反应分析及震害模拟,构建城市建筑群地震灾害可视化分析平台。该项研究旨在探索城市地震灾害风险评估的有效方法,为地震灾害风险管理提供科技支撑。

Earthquake risk assessment is one of the most important methods for risk management and identification of hidden dangers.In this paper,we analyze the researching situation of earthquake risk assessment in China and abroad,then establish a risk assessment system for urban buildings with the considering of the source rupture process,ground motion propagation,site conditions and buildings’seismic structural response.At last,we build a visual analysis platform of urban buildings in earthquakes based on the setting seismic and multi-probability seismic hazard levels.The purpose of this research is to discuss effective methods for earthquake risk assessment of urban buildings,and to provide scientific and technological support for risk management of earthquake disasters.