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利用前人所编的历代(共四代)地震烈度(地震动)区划图,组合叠加后得到一个综合烈度(地震动)。这种叠加是一个集成的专家系统综合认识结果,以此作为坝体可能遭受地震破坏危险的因素。初步研究建立了混凝土大坝震害评估模型,此模型是考虑了坝体的结构类型、建设年代、使用现状、场地条件、抗震设防水平等因素,用逐步线性拟合方法进行回归分析得到的。用此模型对汶川地震破坏的坝体进行了实例分析,分析结果比较符合实际。最后,用这个模型对黄河上游10座重点混凝土大坝做了震害评估分析。
Using the previous generation (a total of four generations) seismic intensity (earthquake) zoning map, the combination of superimposed to get a comprehensive intensity (earthquake). This overlay is the result of an integrated expert system synthesis as a possible dam risk factor for the dam. Preliminary study has established a seismic damage assessment model for concrete dam. The model is obtained by regression analysis with stepwise linear fitting method considering factors such as structure type, construction age, current status, site conditions, seismic fortification level and so on. This model is used to analyze the dam damaged by the Wenchuan earthquake. The result of the analysis is in line with the actual situation. Finally, this model is used to evaluate the damage of 10 key concrete dams in the upper reaches of the Yellow River.