The use of neural networks to develop CPT correlations for soils in northern Croatia

Meho Sasa Kovacevic, Kenneth Gavin, Cormac Reale, Lovorka Libric

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Citations (Scopus)
34 Downloads (Pure)


The evaluation of soil parameters for design is best undertaken through comprehensive laboratory test programmes. However, due to sampling difficulty, time and cost constraints correlations between in-situ tests and physical-mechanical properties of soils are routinely applied in practice. This paper presents data collected from five sites in Northern Croatia at which Cone Penetration Tests (CPT) and comprehensive laboratory test data was available. One of the advantages of using CPT data in preference to other types of in-situ tests for establishing correlations, is the large volume of high-quality data available at each probe location allows for the application of advanced statistical approaches. In this paper, the use of neural networks in developing such correlations is demonstrated. Using a database of 216 data pairs, obtained from the five sites, a correlation between CPT qc and soil unit weight is established. A validation exercise was performed in which the correlation was tested against data from the recent Veliki vrh landslide that occurred in the same geographical region as the database sites. In addition, by using the soil behaviour type index, Ic, normalised cone tip resistance, Qtn, and normalised sleeve friction, Fr, the results can be compared to correlations developed for soils from geotechnical diverse regions to check for consistency in the derived correlations.
Original languageEnglish
Title of host publicationCone Penetration Testing 2018
Subtitle of host publicationProceedings of the 4th International Symposium on Cone Penetration Testing (CPT'18), 21-22 June, 2018, Delft, The Netherlands
EditorsMichael A. Hicks, Federico Pisano, Joek Peuchen
Place of PublicationLondon
PublisherCRC Press
ISBN (Electronic)978-0-429-50598-0
ISBN (Print)978-1-138-58449-5
Publication statusPublished - 21 Jun 2018
Event4th International Symposium on Cone Penetration testing - Aula Conference Centre, Delft, Netherlands
Duration: 21 Jun 201822 Jun 2018
Conference number: 4


Conference4th International Symposium on Cone Penetration testing
Abbreviated titleCPT18
OtherCPT’18 will focus on the solution of geotechnical challenges using the cone penetration test (CPT), CPT add-on measurements and companion in-situ penetration tools (such as full flow and free fall penetrometers), with particular emphasis on practical experience and application of research findings. As CPTs play a major role in geo-engineering, CPT’18 will bring together the world’s experts who are working to improve the quality and reduce the difficulties involved. The symposium will be attended by academics, researchers, consultants, practitioners, hardware/software suppliers, certifiers and students. It will be a unique opportunity for meeting people and sharing high-level knowledge.
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