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Liquefaction assessment by microtremor measurements in Babol city

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Abstract

The recent researchers have discovered microtremor applications for evaluation of the liquefaction potential. Microtremor measurement is a fast, applicable and cost-effective method with extensive applications. In the present research the liquefaction potential has been reviewed by utilization of microtremor measurement results in Babol city. By using the fundamental frequency and amplification factor, the value of vulnerability index (Kg) was calculated and the liquefaction potential has been evaluated. For controlling the accuracy of this method, its output has compared with the results of Seed and Idriss method in 30 excavated boreholes within the study area. These two methods show an acceptable conformity with each other. Also, the artificial neural network (ANN) with different inputs was trained. Regarding the results of the three methods, we can conclude the threshold value of liquefaction potential is Kg=5. By reviewing and comparing these three methods, it will be observed that microtremors have the capability of assessing the liquefaction potential with desirable accuracy.
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insu-01433798 , version 1 (13-01-2017)

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  • HAL Id : insu-01433798 , version 1

Cite

Asskar Janalizadeh Choobbasti, Mehran Naghizadehrokni, Sadegh Rezaei. Liquefaction assessment by microtremor measurements in Babol city. Fifth International Conference on Geotechnique, Construction Materials and Environment,, Nov 2015, Osaka, Japan. ⟨insu-01433798⟩

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