Eearthquake damage and loss assessment of lifeline engineering have an extremely important significance on earthquake damage defense and earthquake emergency responses.Lifeline engineering is a complex and vast network system,and until now,the exist ing research on earthquake damage and loss assessment of lifeline engineering shows some limitations and uncertainties.We utilized the earthquake damages and loss assessment of extensively and systematically researched buildings,and analyzed earthquake damages to buildings and lifelines in previous typical earthquakes.By integrating losses of buildings and lifelines,we established the correlation model by analyzing the quantitative relation between losses of buildings and lifeline engineering.Moreover,by analyzing kilometer grid data including population,GDP and land utilization,we defined sub-area classification principle in mainland China,and then,built the model for analyzing direct economic loss of lifeline engineering base on the principle.Furthermore,we developed the analysis module for direct economic loss of lifeline engineering based on GIS software platform,and took advantage of the module to display the spatial distribution of direct economic loss of lifeline engineering under different seismic intensities in Sichuan Province,China.%生命线工程的震害及损失评估工作对于震害防御和震后地震应急工作有着极其重要的意义.但是,生命线工程是一个复杂庞大的网络系统,目前对其开展的震害及损失评估研究工作存在着很大的局限性和不确定性.本文充分利用研究较多且较系统的建筑物震害及损失评估结果,结合历次典型历史地震震害中建筑物和生命线震害情况,通过分析建筑物损失和生命线工程损失的数量关系,建立二者之间的关联模型;通过对人口、GDP、土地利用等公里网格数据进行分析,给出中国大陆地区的分区分类原则,建立分区分类的生命线工程地震直接经济损失分析模型;基于GIS软件平台,开发了生命线工程地震直接经济损失分析模块,利用该模块,得出了四川省不同地震烈度下的生命线工程直接经济损失空间分布情况.
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