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Evaluation of driving energy transferred to split spoon sampler for accuracy improvement of standard penetration test

Authors
Hong, Won-TaekKim, Sang YeobLee, Jong-Sub
Issue Date
1월-2022
Publisher
ELSEVIER SCI LTD
Keywords
Dynamic penetration; F -V integration method; Standard penetration test; SPT N value; Transferred energy
Citation
MEASUREMENT, v.188
Indexed
SCIE
SCOPUS
Journal Title
MEASUREMENT
Volume
188
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/136579
DOI
10.1016/j.measurement.2021.110384
ISSN
0263-2241
Abstract
Uncertainties in the driving energy transferred to the split spoon sampler (Esampler) cause inaccuracies of the standard penetration test (SPT) N values. In this study, an energy monitoring module (E-module) is developed to evaluate Esampler and correct N. To demonstrate the application of the E-module, SPTs were performed at three study sites where the grounds are mainly composed of silty sands, and the transferred energy at the head of the driving rod (Ehead) and Esampler were evaluated. In addition, static penetration resistances were measured to validate the energy corrections of N. The experimental results and analyses indicate that the N corrected using Esampler exhibits an improved relationship with static penetration resistances compared with that corrected using Ehead because the Esampler directly affects the penetration of the split spoon sampler. Therefore, the evaluation of Esampler using the E-module and the correction of N may be used to obtain improved subsurface characterizations.
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College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles

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공과대학 (건축사회환경공학부)
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