Comparative analysis of seismic liquefaction sensitivity based on in-situ CPTu and SPT
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Abstract:
Seismic liquefaction sensitivity is usually denoted by the ant-liquefaction safety factor(FSliq),and its calculation strongly depends on the in-situ test technology. Given the different methods of sand liquefaction discrimination at home and abroad,this paper,relying on an overseas container terminal project,compares the seismic liquefaction sensitivity of two sites with two in-situ test technologies,i.e.,standard penetration test(SPT)and cone penetration test with pore pressure measurement(CPTu),employed respectively at home and abroad. The following observations can be made from the results:1)The two methods produce consistent analysis results,although those obtained by CPTu are more conservative on the whole. 2)CPTu can reveal more detailed soil characteristics,despite that corresponding FSliq calculated are more variable. 3)The applicability and accuracy of the SPT method are verified.
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ZHANG Yan-lin, SHI Zhang-ru, CONG Lu, et al. Comparative analysis of seismic liquefaction sensitivity based on in-situ CPTu and SPT[J]. Port & Waterway Engineering,2022(5):198-204.