New developments in bender element testing

• Type: Article in International Conference Proceedings Book
• Date: 2019

Authors

Cristiana Ferreira (Author) FEUP; da Fonseca, AV (Author) Other; Díaz Durán, F (Author) Other; Cascante, G (Author) Other

Conference proceedings International

Title: Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019

Pages: 2365-2372

7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019

17 January 2019 through 20 January 2019

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-00R-W34

Abstract (EN): In the last decades, bender elements (BE) have become a routine laboratory tool for seismic wave velocity measurements. The ease of implementation and the advantage of simultaneously combining very small strain and larger strain stiffness measurements are among the reasons for its attractiveness. This paper aims to present new developments in BE testing, fundamentally resulting from the use of the different excitation frequencies. Changing the input frequency in BE measurements was originally advocated to improve its interpretation, often reported as the main difficulty in BE testing. On the other hand, this approach has inspired novel applications, namely the combined measurement of compression (VP) and shear (VS) wave velocities using a single BE. This application was derived from experimental evidence, and subsequently validated using laser measurements of the BE deformation under different frequencies. These enabled to prove the type of generated waves and consequently confirm soil response. In this paper, the specific procedures of this application will be discussed and analysed in detail. © 2019 Associazione Geotecnica Italiana, Rome, Italy.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8