Abstract #
This document presents three practical cases where the application of the Finite Element Method (FEM) allowed INGEOSOLUM to reduce geotechnical risk and execute construction projects safely and economically. The study covers the process of geotechnical analysis using FEM, from the selection of the constitutive model to sensitivity analysis and the determination of key geotechnical parameters. The practical cases illustrate how FEM contributed to safer and more economical project designs.
Technical Relevance #
This document is highly relevant for geotechnical engineers and professionals involved in complex construction projects. The use of FEM in geotechnical analysis provides deeper insights into soil-structure interactions and failure mechanisms that traditional methods may overlook. The practical cases discussed demonstrate the method’s ability to optimize designs, ensuring both safety and cost-effectiveness in real-world applications.
Target Audience #
The document is intended for geotechnical engineers, construction professionals, and researchers focused on advanced numerical methods for risk reduction in geotechnical projects. It is particularly useful for those working with FEM software and interested in the practical application of these tools in challenging construction scenarios.
Software and Methodology #
The geotechnical analysis was conducted using the GEO-FEM software, part of the GEO4 suite. GEO-FEM is specifically designed for 2D geotechnical problems involving deformation and stability. The software’s capabilities include automatic mesh generation, multiple constitutive models (e.g., Mohr-Coulomb, Cam-Clay), and tools for modeling complex geotechnical interactions. The methodology involves rigorous parameter determination through laboratory and field tests, ensuring the accuracy and reliability of the FEM models used.
Process Description #
The document begins by outlining the general process of geotechnical analysis using FEM, including the selection of constitutive models and the determination of geotechnical parameters. It then details three practical cases: 1) foundation reinforcement for a crane support beam using SuperJet-Grouting, 2) improvement of slope stability through the introduction of rigid inclusions, and 3) control of deformations during urban tunnel construction using micropile “tents.” Each case study is explored with respect to how FEM was applied to reduce geotechnical risks and optimize project designs.
Main Findings #
The study concludes that FEM is superior to traditional geotechnical analysis methods, particularly in complex scenarios where it is necessary to simulate non-linear material behavior, complex geometries, and boundary conditions. The practical cases demonstrate significant improvements in safety and cost-efficiency, with FEM enabling precise modeling of soil-structure interactions and the prediction of potential failure mechanisms. The document also emphasizes the importance of accurate parameter determination and the use of advanced constitutive models.
Practical Applications #
The findings from this document are directly applicable to projects involving foundation reinforcement, slope stability improvement, and urban tunnel construction. Engineers can apply the insights gained from these practical cases to similar projects, using FEM to reduce geotechnical risks and optimize designs for safety and economy.
Limitations and Considerations #
The document acknowledges that the accuracy of FEM-based analysis depends heavily on the selection of appropriate constitutive models and the correct determination of material parameters. It also notes that while FEM can model complex interactions, it requires detailed field and laboratory data, which may not always be available. Therefore, the use of FEM should be complemented by comprehensive geotechnical investigations.
Conclusions #
The document concludes that FEM is a powerful tool for reducing geotechnical risks in complex construction projects. By accurately modeling soil behavior and interactions with structures, FEM enables engineers to design safer and more economical solutions. The practical cases presented highlight the method’s effectiveness in real-world applications, reinforcing its value as an advanced tool in geotechnical engineering.
Related Resources #
Further reading includes studies on the application of FEM in other geotechnical scenarios, such as deep excavations and large-scale infrastructure projects. Additionally, exploring case studies on the use of SuperJet-Grouting and other soil improvement techniques in conjunction with FEM can provide deeper insights into the practical benefits of these methods.
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