An appraisal of a new generation of surface wave techniques at a test site in florida

Pengxiang Jiang, Khiem T. Tran, Dennis R. Hiltunen, Nick Hudyma

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Surface wave techniques for soil characterization have undergone significant development over the past several decades. Herein, a new generation of techniques is compared against traditional methodologies at a test site in Florida. In particular, data from active-source MASW, a new non-uniform active-source array, ReMi, and two dimensional (2D) passive-source arrays are compared. A non-uniform linear array of receivers together with a small vibration shaker significantly improves the resolution of dispersion curves as compared to conventional multi-channel sledgehammer source arrays, particularly at low frequencies. To evaluate dispersion images at the lowest frequencies, passive-source arrays were conducted. Comparing dispersion curves at frequencies that overlapped, the phase velocity estimates from ReMi were low, whereas non-uniform array active-source and 2D passive-source methods produced similar results provided modifications are made to account for near-field effects. Inversion of the combined dispersion curve from a non-uniform active-source array and a 2D passive-source array yielded a significantly deeper shear wave velocity profile for the site than produced in a previous study using dispersion data from a sledgehammer source uniform array and ReMi.

Original languageEnglish
Title of host publicationIFCEE 2015 - Proceedings of the International Foundations Congress and Equipment Expo 2015
EditorsJ. Brian Anderson, Magued Iskander, Muhannad T. Suleiman, Debra F. Laefer
Pages1981-1992
Number of pages12
ISBN (Electronic)9780784479087
DOIs
StatePublished - 2015
EventInternational Foundations Congress and Equipment Expo 2015, IFCEE 2015 - San Antonio, United States
Duration: 17 Mar 201521 Mar 2015

Publication series

NameGeotechnical Special Publication
VolumeGSP 256
ISSN (Print)0895-0563

Conference

ConferenceInternational Foundations Congress and Equipment Expo 2015, IFCEE 2015
Country/TerritoryUnited States
CitySan Antonio
Period17/03/1521/03/15

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