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ANN and MANFIS to predict pressuremeter modulus and limit pressure, case study: Isfahan metro line 2

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Abstract

In this study, pressuremeter modulus (Ep) and limit pressure (PL) were predicted using artificial intelligence methods through the available results of in situ and laboratory tests (the pressuremeter tests) obtained from the same place in Isfahan city metro line 2 in the east–west distance. In this regard, the results of pressuremeter experiments, standard penetration test, and downhole seismic geophysical test, as well as the results of laboratory tests such as grain size, density, and triaxial compression tests performed in fine-grained sediments (clay and silt), were used as training data. To predict the values of pressuremeter modulus and limit pressure for some other places close to the mentioned location, artificial neural network (ANN) and multi-adaptive neuro-fuzzy inference system (MANFIS) were trained using the available experimental data. It outperforms ANN predictive model where the values of R2, RMSE were 0.86% and 0.17, respectively. The values of correlation coefficient R2 and the root mean squares error (RMSE) in MANFIS model was equal to 0.94% and 0.05, respectively. Totally, the results implied that MANFIS model has the ability to provide more realistic outputs with higher accuracy compared to ANN. The most advantage of the method presented in this research is that since the cost of conducting in situ and lab tests is usually high, when the test values for some parts of a location are available, it is possible to estimate these values for a limited number of other close locations and/or in the range with a good accuracy without the need to perform extra tests.

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Authors and Affiliations

Authors

Contributions

Asieh Alidousti: conceptualization, methodology, visualization, investigation, and writing—reviewing and editing. Rassoul Ajalloeian: investigation, resources, supervision, and reviewing and editing. Alireza Hajian: methodology, validation, supervision, and reviewing and editing.

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Correspondence to Asieh Alidousti Shahraki.

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The authors declare no competing interests.

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Responsible Editor: Zeynal Abiddin Erguler

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Alidousti Shahraki, A., Ajalloeian, R. & Hajian, A. ANN and MANFIS to predict pressuremeter modulus and limit pressure, case study: Isfahan metro line 2. Arab J Geosci 16, 104 (2023). https://doi.org/10.1007/s12517-022-11170-7

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  • DOI: https://doi.org/10.1007/s12517-022-11170-7

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