Study on Critical Shear Wave Velocity of Saturated Loess Foundation Soil Liquefaction under Different Seismic Magnitudes Action

Abstract:

Use of Seed’s simplified liquefaction evaluation method, combined with the dynamic triaxial test results, and the wave velocity of site liquefaction, to evaluate liquefaction potential of the three typical loess sites under the action of different seismic magnitudes, and calculate the boundary depth of the liquefaction site. Moreover, give the corresponding relationship between the typical loess site liquefaction boundary depth and shear wave velocity, and get the critical shear wave velocity of typical loess liquefaction site. The results of the study show that, (1) saturated loess site could be liquefied under the action of a certain intensity earthquake. (2) saturated soil layers which do not produce liquefied under the action of 6.5 degree earthquake，its critical shear wave velocity is about 200 m/s, and under the action of 7 degree earthquake its critical shear wave velocity is about 303 m/s, under the action of 8 degree earthquake its critical shear wave velocity is about 368 m/s. This conclusion enriches and develops the basis of liquefaction potential evaluation in the loess region.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1720-1726
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1720
• Online since: November 2012
• Authors: Ping Wang, Lan Min Wang, Qian Wang, Jun Wang
• Keywords: Boundary Depth, Liquefaction Assessment, Loess Foundation, Shear Wave Velocity

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DOI: 10.1061/jsfeaq.0001662