Full-scale laboratory tests using a shape-acceleration array system

T. Abdoun, V. Bennett, R. Dobry, S. Thevanayagam, L. Danisch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Geotechnical instrumentation using Micro-Electro-Mechanical Systems (MEMS) are relative newcomers to this field and, as such, require extensive validation testing. This paper presents the use of a Shape-Acceleration Array (SAA) to instrument full-scale laminar container tests at the University of Buffalo. The SAA is a sensor array based on MEMS accelerometer measurements of angles relative to gravity. The sensors are contained in 30 cm long rigid segments which are connected by composite joints that prevent torsion but allow flexibility in two degrees of freedom. These rigid segments and flexible joints are combined to form a sensor array which is capable of measuring three-dimensional (3D) ground deformations at 30 cm intervals and 3D accelerations at 2.4 m intervals to a depth of 100 m. Two of these MEMS-based sensor arrays were utilized in a series of tests as part of a liquefaction and lateral spreading study. Extensive instrumentation was possible in this laboratory setting, thus the acceleration and deformation measurements from the SAAs can be compared to the traditional instrumentation, such as accelerometers and potentiometers. The goal of validating and calibrating the measured accelerations and displacements of the SAA system was achieved through these full-scale tests.

Original languageEnglish (US)
Title of host publicationProceedings of the Geotechnical Earthquake Engineering and Soil Dynamics IV Congress 2008 - Geotechnical Earthquake Engineering and Soil Dynamics, GSP 181
Edition181
DOIs
StatePublished - 2008
EventGeotechnical Earthquake Engineering and Soil Dynamics IV Congress 2008 - Geotechnical Earthquake Engineering and Soil Dynamics - Sacramento, CA, United States
Duration: May 18 2008May 22 2008

Publication series

NameGeotechnical Special Publication
Number181
ISSN (Print)0895-0563

Other

OtherGeotechnical Earthquake Engineering and Soil Dynamics IV Congress 2008 - Geotechnical Earthquake Engineering and Soil Dynamics
CountryUnited States
CitySacramento, CA
Period5/18/085/22/08

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Abdoun, T., Bennett, V., Dobry, R., Thevanayagam, S., & Danisch, L. (2008). Full-scale laboratory tests using a shape-acceleration array system. In Proceedings of the Geotechnical Earthquake Engineering and Soil Dynamics IV Congress 2008 - Geotechnical Earthquake Engineering and Soil Dynamics, GSP 181 (181 ed.). (Geotechnical Special Publication; No. 181). https://doi.org/10.1061/40975(318)214