Comparison of liquefaction potential of loess in Lanzhou, China, and Memphis, USA |
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Authors: | H Hwang L Wang and Z Yuan |
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Institution: | a Center for Earthquake Research and Information, The University of Memphis, 3876 Central Ave., Memphis, TN 38152, USA b Lanzhou Institute of Seismology, China Seismological Bureau, 410 Donggangxilu Street, Lanzhou 730000, People’s Republic of China |
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Abstract: | This paper presents an evaluation of the liquefaction potential of loess in Lanzhou, China, and Memphis, USA. The topography, stratigraphy, and genesis of loess in these two areas were investigated and compared. Several loess samples in each study area were taken and their physical indices were determined. In addition, the microstructures of these loess samples were investigated using an electron microscope, and dynamic triaxial tests were performed using an artificial seismic wave. The results of this investigation indicated that both Lanzhou loess and Memphis loess have a potential for liquefaction, but Memphis loess is less susceptible to liquefaction. Furthermore, Lanzhou loess and Memphis loess behave differently during ground shaking. |
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Keywords: | Earthquake Liquefaction potential Lanzhou Loess Memphis Pore pressure Residual strain Shear stress |
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