Non-conventional lab and field methods for measuring frequency-dependent low-strain parameters of soil dynamic behavior

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• 作者：C.G. Lai^a ; ^{carlo.lai@unipv.it} ; A.G. Ö ; zcebe^b ; ^{aliguney.ozcebe@polimi.it}
• 关键词：Dynamic soil properties ; Cross-hole seismic testing ; Resonant column test ; Viscoelasticity theory ; Kramers-Kronig relations ; Physical causality ; Frequency-dependent soil properties
• 刊名：Soil Dynamics and Earthquake Engineering
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：91
• 期：Complete
• 页码：72-86
• 全文大小：1867 K
• 卷排序：91

文摘

Current methods to determine low-strain dynamic soil properties suffer from inconsistencies. Non conventional approach to perform and interpret lab RC and seismic cross-hole test is discussed. This approach is based on fully exploiting the linear theory of viscoelasticity and its postulates. Preliminary results are encouraging although technical difficulties still need to be overcome. New approach allows to enhance current models in computational soil dynamics and overcome flaws.