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Comparative Analysis of Exsiting Liquefaction Identification Methods

Author: TangFuHui
Tutor: SunRui
School: China Seismological Bureau, Institute of Engineering Mechanics
Course: Solid Mechanics
Keywords: Liquefaction Seismic records Recognition Classification of samples Method of testing
CLC: P315
Type: Master's thesis
Year: 2011
Downloads: 39
Quote: 1
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Abstract


The liquefied real-time alarm core technology is based on seismic records to identify whether the venues liquefied . Currently, used on the project is available based on strong motion records identify liquefaction four , Suzuki method , Miyajima method , Kostadinov and Yamazaki method (KY Law ) and Sun Rui , and EARTHQUAKE method (SY method) . Four independent success rate of the test , the test results are good . But this test of their own by three obvious shortcomings , one sample is different not for site class test not validate individual indicators . In this way, it is unable to evaluate the pros and cons of each method , it is difficult to improve . This paper argues that the Liquefied identification method is the most essential needs of practical engineering screening liquefiable site is relatively soft , but the ability of the non - liquefied site should have , and should therefore be used to verify the existing identification methods seismogram sample classification , and focus the proposed method is used for the feasibility of the soft and soft soil site . In view of this, the paper contains various venues earthquake recorded sample sub- site class and four liquefied identification method reliability comparative analysis , presented the results of the evaluation and recommendations for improvement . Thesis work include : 1. Study liquefied identify the nature of demand in order to determine the sample selection principle test the existing liquefied identification method of earthquake records , select a representative sample from the famous earthquake . 2 . Reproduce foreign Suzuki , of three liquefied identification method of Miyajima method KY law , the application of the new unified samples for testing , analysis of the efficiency of each parameter identification . 3 . Inspection Miyajima law Suzuki method , KY Act , SY Law on the soft soil site suitability, analyze the cause of the miscarriage of justice of the soft soil site . The method of comparison Miyajima , Suzuki method , KY Act , SY Law four liquefied recognition performance in different venues under the category , the various indicators are classified and compared the overall view of the development of liquefied identification method and suggestions for improvement . 5 of the 2011 earthquake in New Zealand from the less than 50km all 27 venues of the original earthquake records liquefied Miyajima Act , the Suzuki method , KY and SY four identification methods blind test and preliminary comparative analysis .

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CLC: > Astronomy,Earth Sciences > Geophysics > Earth ( rock circles ) physics ( geophysics ) > Seismology
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