Predictive model for shear wave velocity of gravelly soil and its application to liquefaction triggering assessment,Engineering Geology

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Predictive model for shear wave velocity of gravelly soil and its application to liquefaction triggering assessment
Engineering Geology ( IF 6.9 ) Pub Date : 2024-10-04 , DOI: 10.1016/j.enggeo.2024.107751
Chi-Chin Tsai, Jing-Wen Su, Scott M. Olson

Several studies have established empirical correlations between shear wave velocity (Vs) and standard penetration test blow count (SPT-N) for engineering use. However, these empirical correlations cannot be applied to gravel-rich soils since the measured SPT-N is often inflated in gravel. Therefore, an empirical correlation of Vs for gravel is developed in this study using the Engineering Geological Database for the Taiwan Strong Motion Instrumentation Program. The Vs predictive model considers gravel content (GC) and coefficient of uniformity (Cu) in addition to effective vertical stress, void ratio, fines content, plasticity index, and overconsolidation ratio, which have been considered previously. The proposed model indicates that Vs increases with GC and Cu. Moreover, the Vs adjusted for GC can be used with existing Vs -based liquefaction triggering relationships to rationally define the boundary between liquefaction and non-liquefaction case histories with different GCs.

更新日期：2024-10-04

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