Correlations between p-wave velocity and SPT-N for saturated and unsaturated alluvial clays using dimensional analysis

被引：1

作者：

Ortiz-Palacio, Santiago ^{[1
]}

Ibanez, Sergio J. ^{[1
,3
]}

Sancho, Diego ^{[2
]}

Porres, Jose Angel ^{[1
]}

机构：

[1] Univ Burgos, Dept Geotech Engn, Burgos, Spain

[2] Univ Burgos, Doctoral Sch, Burgos, Spain

[3] Univ Burgos, Escuela Politecn Super, Dept Geotech Engn, Calle Villadiego s-n,Campus San Amaro, Burgos 09007, Spain

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2024年 / 177卷

关键词：

p-wave; SPT-N; Dimensional analysis; STATISTICAL CORRELATIONS; RELATIVE DENSITY;

D O I：

10.1016/j.soildyn.2023.108401

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The aim of this research is to establish practical and robust correlations between dilatational wave velocities (p -wave velocities, Vp) and the Standard Penetration Test blow count (SPT-N). Very low levels of correlation are recorded with the conventional single variable approaches, in consequence, a multivariable study is needed for higher precision. A dimensional analysis was conducted including other soil parameters that condition this physical phenomenon, such as the void ratio (e), the degree of saturation (Sr), the effective overburden pressure (sigma ' v), and the particle density (gamma s), for greater precision with Vp and SPT-N correlations. Over 100 seismic and SPT tests were performed around the coastal city of Juchit ' an de Zaragoza (Oaxaca), Mexico, to gather information for this research. As a result, two dimensionless indexes -DSIu (Undrained Dilatational Stiffness Index) and MDSIu (Modified Undrained Dilatational Stiffness Index)-yielded two alternative expressions between both indexes and Vp. In this way, a strong relationship between Vp and SPT-N was obtained with an adjusted coefficient of determination R2 value of 0.93.

引用

页数：11

共 59 条

[21] Dimensional analysis of yielding and pounding structures for records without distinct pulses [J].