| 频率下降率法对2011年新西兰6.3级地震液化的盲测 |
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| 引用本文： | 孙锐,唐福辉,袁晓铭. 频率下降率法对2011年新西兰6.3级地震液化的盲测[J]. 岩土力学, 2011, 32(Z2): 383-388 |
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| 作者姓名： | 孙锐 唐福辉 袁晓铭 |
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| 作者单位： | 中国地震局工程力学研究所; |
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| 基金项目： | 国家自然科学基金(No.90715017,No.50778165); 国家科技部国际合作项目(No.2009DFA71720); 国家重点基础研究发展计划(No.2007CB714201); 哈尔滨市人才专项资金项目(No.2007RFXYS065) |
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| 摘 要： | 场地液化实时监测是减轻地震灾害的新手段,其核心是建立依据强震记录识别场地液化技术,但目前建立的方法尚不成熟,可靠性也缺少实际地震的检验。2011年新西兰地震中液化及其震害现象显著,为检测现有液化识别方法提供了条件。利用该次强震记录,采用孙锐和袁晓铭以往提出的频率下降率法对记录场地液化进行了盲测,为今后方法改进提供思路。针对震中距小于50 km的全部27条原始强震记录进行了识别,有9个场地识别为液化场地,其余为非液化场地;对两个已报道为液化的场地,频率下降率法给出了正确的识别结果;识别出的液化场地主要集中在克赖斯特彻奇市东侧Avon河两岸,这一结果与报导定性相符;发现有两个场地原始强震记录存在疑点,经处理后给出了修正结果。
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| 关 键 词： | 新西兰地震 液化 频率下降率法 盲测 |
| 收稿时间： | 2011-04-01 |
Blind detection of liquefaction sites by the method of frequency decrease rate for New Zealand Earthquake |
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| SUN Rui,TANG Fu-hui,YUAN Xiao-ming. Blind detection of liquefaction sites by the method of frequency decrease rate for New Zealand Earthquake[J]. Rock and Soil Mechanics, 2011, 32(Z2): 383-388 |
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| Authors: | SUN Rui TANG Fu-hui YUAN Xiao-ming |
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| Affiliation: | Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China |
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| Abstract: | The real-time liquefaction monitoring and warning techniques are novel ways to mitigate liquefaction hazard.The key point for the techniques is to establish a reverse liquefaction detection method based on seismic records.However,the reliability of the existing liquefaction detection methods is lack of verification by earthquake records.There were serious liquefaction damages in Christchurch in New Zealand Earthquake in 2011 and creates a wonderful chance to exam the existing liquefaction detection methods.... |
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| Keywords: | New Zealand Earthquake liquefaction method of frequency decrease rate blind detection |
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