土石坝群体震害评估方法
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摘要
现有土石坝震害评估方法大多是针对单一土石坝的单体评估方法,在进行评估工作时需要逐一进行计算,并且要求土石坝具有较为详细的资料,因此,造成评估效率低下,对资料不全的土石坝不能进行快速评估。通过对汶川、唐山、通海地震中土石坝破坏比的分析,发现不同程度破坏比随烈度变化的规律比较明显,并给出了不同程度破坏比的经验取值范围,最后,提出了基于破坏比的土石坝群体评估模型,并采用海城地震土石坝震害实例对该模型进行验证,结果表明评估精度较高,克服了单体评估方法的不足。
The existing earth-rock dam earthquake damage assessment methods are mostly for the single earth-rock dam,and in the process of evaluation,the dams need to be calculated one by one and the information of the earth-rock dam must be detailed,which results in lower assessment efficiency and is hard to do rapid assessment when the data of the dam is incomplete.Analyses of the earth-rock dam damage ratios of Wenchuan,Tangshan and Tonghai earthquakes found that the variation law of the varying degrees damage ratios change with the intensities The experience range of varying degrees damage ratio was given through the analysis.The earth dam group assessment model based on damage ratio was proposed and was verified by the earth-rock dam earthquake damage case of Haicheng earthquake.Results show that the method presented in this paper has higher accuracy and can overcome the disadvantage of existing assessment method.
The existing earth-rock dam earthquake damage assessment methods are mostly for the single earth-rock dam,and in the process of evaluation,the dams need to be calculated one by one and the information of the earth-rock dam must be detailed,which results in lower assessment efficiency and is hard to do rapid assessment when the data of the dam is incomplete.Analyses of the earth-rock dam damage ratios of Wenchuan,Tangshan and Tonghai earthquakes found that the variation law of the varying degrees damage ratios change with the intensities The experience range of varying degrees damage ratio was given through the analysis.The earth dam group assessment model based on damage ratio was proposed and was verified by the earth-rock dam earthquake damage case of Haicheng earthquake.Results show that the method presented in this paper has higher accuracy and can overcome the disadvantage of existing assessment method.
引文
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[2]李树桢.地震灾害评估[M].北京:地震出版社,1996.LI Shuzhen.Earthquake Disaster Assessment[M]Beijing:Seismological Press,1996.(in Chinese)
[3]长江流域水库信息网.长江流域及西南诸河水库信息复核工作动态[EB/OL].(2012-03-30)[2012-10-15].http://dns2.cjw.com.cn/default2011_province.asp?pro=510000&name=四川省.The Yangtze River Basin Reservoir Information Network.Information to review the work of the Yangtze River Basin and Southwest Creek Reservoir[EB/OL].(2012-03-30)[2012-10-15].http://dns2.cjw.com.cn/default2011_province.asp?pro=510000&name=四川省.(inChinese)
[4]刘恢先.唐山大地震震害[M].北京:地震出版社,1989.LIU Huixian.Tangshan Earthquake Damage[M].Beijing:Seismological Press,1989.(in Chinese)
[5]汪闻韶,黄锦德.中国水利工程震害资料汇编1961-1985[M].北京:中国科学院、水利水电部水利水电科学研究院抗震防护研究所,1990.WANG Wenshao,HUANG Jinde.Earthquake Damage Information of the Chinese Water Conservancy Series 1961-1985[M].Beijing:ChineseAcademy of Sciences,Ministry of Water Resources and Hydropower Water Resources and Hydropower Research Institute of Seismic ProtectionInstitute,1990.(in Chinese)
[6]中国科学院工程力学研究所.海城地震震害[M].北京:地震出版社,1979.Chinese Academy of Sciences,Institute of Engineering Mechanics.Haicheng Earthquake Damage[M].Beijing:Seismological Press,1979.(inChinese)
[7]GBT24336-2009生命线工程地震破坏等级划分[S].北京:中国标准出版社,2009.GBT 24336-2009 The Lifeline of the Engineering Earthquake Damage Classification[S].Beijing:Standards Press of China,2009.(in Chinese)
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