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Suitable Waves for Bender Element Tests: Interpretations, Errors and Modelling Aspects
Rahman, Muhammad E.; Pakrashi, Vikram; Banerjee, Subhadeep; Orr, Trevor
Extensive research on bender element tests has been carried out by many researchers, but precise guidelines for carrying out such tests have not yet been established. It is often recommended that, when using a particular bender element test for the first time on a particular soil to determine its small strain dynamic properties, several methods should be tried and the results compared in order to improve confidence in the results obtained. Demonstrated use of relatively easy analytical models for investigating different scenarios of bender element testing is another aspect that should be further looked into. This paper presents laboratory experiments and dynamic finite element analyses to determine a suitable wave for use in bender element tests in the laboratory to measure small strain shear stiffness (Gmax). The suitability of a distorted sine wave over a continuous sine wave for tests is observed from laboratory experiments and dynamic finite element analyses. The use of simple finite element models for assessing a number of aspects in relation to bender element testing is demonstrated. Department of Civil Engineering, University of Dublin, Trinity College Nishimatsu Construction Co., Ltd The Geotechnical Trust Fund of the Institution of Engineers of Ireland
Keyword(s): Bender element test; Numerical analysis; Sine wave; Small strain shear stiffness
Publication Date:
2019
Type: Journal article
Peer-Reviewed: Unknown
Language(s): English
Institution: University College Dublin
Publisher(s): Budapest University of Technology and Economics
First Indexed: 2019-05-16 06:15:19 Last Updated: 2019-05-16 06:15:19