Caricamento in corso...

03PZPTR

A.A. 2024/25

Course Language

Inglese

Degree programme(s)

1st degree and Bachelor-level of the Bologna process in Civil And Environmental Engineering - Torino

Course structure

Teaching | Hours |
---|---|

Lezioni | 80 |

Esercitazioni in aula | 20 |

Lecturers

Teacher | Status | SSD | h.Les | h.Ex | h.Lab | h.Tut | Years teaching |
---|---|---|---|---|---|---|---|

Dominijanni Andrea | Professore Associato | CEAR-05/A | 60 | 0 | 0 | 0 | 1 |

Co-lectures

Espandi

Riduci

Riduci

Teacher | Status | SSD | h.Les | h.Ex | h.Lab | h.Tut |
---|---|---|---|---|---|---|

Aimar Mauro | Ricercatore L240/10 | CEAR-05/A | 10 | 10 | 0 | 0 |

Napoli Maria Lia | Ricercatore L240/10 | CEAR-05/A | 10 | 10 | 0 | 0 |

Context

SSD | CFU | Activities | Area context |
---|---|---|---|

ICAR/07 ICAR/07 |
5 5 |
B - Caratterizzanti B - Caratterizzanti |
Ingegneria civile Ingegneria ambientale e del territorio |

2024/25

The course is aimed at providing the basic notions of Soil Mechanics for the assessment of the mechanical behaviour of soils and the soil-structure interaction.

Geotechnics focuses on how soil mechanics - that is, using the laws and principles of mechanics and hydraulics to understand soil behaviour - can be applied to several problems encountered in civil and environmental engineering. In this context, Geotechnics includes the design of structures that interact with soils, such as excavations, foundations, earth-retaining walls, and structures composed of soil, such as dams, embankments, and landfill lining systems. In addition, geotechnical engineers contribute to assessing natural slopes and designing the means of stabilizing these slopes.
The course provides an introduction to the fundamentals of soil mechanics concerning the conduction properties, compressibility, and shear strength of soils. In addition, it explores the application of soil mechanics to the following engineering problems: predicting the bearing capacity and settlements of shallow foundations, assessing the stability of slopes and earth-retaining walls, and designing leachate collection layers and low-permeability barriers for landfills and contaminated sites.

The course purposes are:
1. Assuming the porous medium as a mixture of superposed continua, to learn the stress partition between the phase components (effective stress principle);
2. To learn the difference between fine and coarse grained soils, the meaning of drained and undrained conditions and the relative implications;
3. To understand the soil mechanical behaviour through the critical state theory, to relate effective stress and volume changes, to assimilate key concepts as peak strength, dilatancy and critical state.
4. To set the limit analysis problems within the plasticity theory;
5. To understand the influence of geological history on the mechanical behaviour of natural soils.

The main objectives of the course are intended to be the following:
(a) to develop an understanding of fundamental concepts of the mechanics of soils and structures interacting with soils rather than giving a formula-driven approach;
(b) to build a conceptual framework of basic ideas that is robust and adaptable enough to manage current and emerging global challenges a civil and environmental engineer is faced with;
(c) to illustrate, through real cases, how the application of basic, simple ideas can provide acceptable solutions to many classes of geotechnical problems;
(d) to learn how to approach the design of shallow foundations, earth-retaining walls and landfill lining systems.

The knowledge of the contents of the following courses is recommended: Mathematical Analysis I and II, Geometry and Linear Algebra, Physics I, Rational Mechanics, Hydraulics and Structural Mechanics.

Students are recommended to have basic knowledge of mathematical analysis, physics, hydraulics and structural mechanics.

First part: soil description and classification
- Origin, index properties and geological history;
- Soil phases and their relations;
- Soil classification and index properties;
- Natural deposits;
Second part: the behaviour of the elementary volume
- Soil mechanical behaviour;
- Effective stress: definition and postulate;
- Oedometer test: preconsolidation stress and compressibility. Application to the calculation of one-dimensional settlement;
- Stress paths;
- Shear strength and stress-strain behavior.
Third part: boundary problems:
- Porous media seepage;
- Seepage under steady state conditions;
- Theory of consolidation;
- Applications of plasticity theory;
- The collapse of soil structures: theorems of plasticity theory, active and passive limiting states of stress.
- Coulomb and Rankine theories and practical calculation of earth pressures;
- Bearing capacity of shallow footings.

Part 1: Physical and hydraulic behaviour of soils
1. Origin, description and classifications of soils
2. Soil compaction
3. State of stress and strain
4. Linear elasticity and perfect plasticity
5. The principle of effective stress
6. Seepage
7. Criteria for the design of filters, drainage layers and liners
Part 2: Soil compressibility
8. One-dimensional compression (oedometer test)
9. Consolidation theory
Part 3: Soil shear strength
10. Direct shear test and triaxial test
11. Dilatancy, peak and critical state strength
12. Cam clay model
13. Undrained shear strength of normally consolidated and overconsolidated clays
14. Soil parameters for design
Part 4: Stability analysis for geotechnical structures
15. Rankine limiting states of stress
16. Theorems of plastic collapse
17. Limit equilibrium method
18. Stability of infinite slopes
19. The method of slices
Part 5: Earth-retaining walls
20. Lateral earth pressure
21. Stability analysis of gravity walls
22. Drainage systems for gravity walls
Part 6: Shallow foundations
23. Bearing capacity of shallow foundations
24. Linear elastic solutions for settlement prediction
25. Settlement of foundations on clay
26. The use of field tests to predict the settlement of footings on sand
27. Damage criteria and limiting values of settlement

The contents of the course are delivered through lectures and classroom exercises. The classroom exercises are aimed at clarifying, by means of application examples, the topics illustrated during the lectures. The scope of the course is to provide the students with knowledge of the most common laboratory tests for the characterisation of the mechanical behaviour of soils, ability to interpret the laboratory test results, aptitude to formulate boundary value problems, and critical use of the soil mechanical parameters within the most frequently encountered problems in engineering practise (shallow foundations and retaining structures).

The contents of the course are delivered through lectures and classroom exercises.
The classroom exercises are aimed at clarifying, using application examples, the topics illustrated during the lectures.
The aim of the course is to provide the students with knowledge of the most common laboratory tests for characterising the mechanical behaviour of soils, the expertise to interpret the laboratory test results, the ability to formulate boundary value problems, and the critical use of the soil mechanical parameters within the most frequently encountered problems in engineering practice (shallow foundations and earth-retaining structures).

The slides of the course (presentations, notes and exercises) are made available on the teaching portal.
The reference textbooks of the course are reported here below:
Lancellotta, R. (2008). Geotechnical engineering. Routledge, London.
Atkinson, J. (2007). The mechanics of soils and foundations. Routledge, London.
Lambe, T.W., Whitman, R.V. (1969). Soil mechanics. John Wiley & Sons, Hoboken, New Jersey.

Specific reading material, together with the slides used, will be made available to students during lectures.
The recommended textbook is:
Lancellotta, R. (2009). Geotechnical engineering. Second edition, Taylor & Francis.
Additional useful reading materials are:
Atkinson, J. (2007). The mechanics of soils and foundations. Second edition, Taylor & Francis, London.
Mitchell, J.K., and Soga, K., (2005). Fundamentals of Soil Behavior. Third Edition, Wiley.
Verruijt, A. (2018). An introduction to soil mechanics, Springer.

Slides; Libro di testo;

Lecture slides; Text book;

...
The final exam consists of a written test and an oral discussion, which cover all the topics presented during the lectures and classroom exercises.
The written test is aimed at verifying the ability of the students to apply the theoretical concepts to solve simple problems concerning the analysis of the state of stress and strain, the interpretation of the laboratory and in situ test results, the stability of shallow foundations and retaining structures, and the calculation of the settlement of shallow foundations.
The written test consists in solving 4 exercises, within a maximum time of 2 hours. To be admitted to the oral discussion, an overall score of the written test not lower than 15/30 is required (maximum overall score equal to 30/30). During the written test, the use of notes, textbooks and scientific calculators is allowed. The use of smartphones, tablets and laptops is not allowed.
The oral discussion lasts about 20 minutes and consists in 3 or 4 questions to each candidate, which can be answered orally or through the execution of short calculations. The oral discussion is aimed at verifying the knowledge of the theoretical principles that govern the mechanical behaviour of soils and the soil-structure interaction.
The final mark is determined as an average value of the scores attributed to the written test and the oral discussion.

Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.

The final exam consists of a written test and an oral discussion covering all the topics presented during the lectures and classroom exercises.
The written test aims to verify the student's ability to apply the theoretical concepts to solve simple problems concerning the analysis of the state of stress and strain, the interpretation of the laboratory tests, the stability of shallow foundations and earth-retaining structures, and the calculation of the settlement of shallow foundations.
The written test consists of solving three exercises within a maximum time of 2 hours. To be admitted to the oral discussion, an overall score of the written test not lower than 15/30 is required (maximum overall score equal to 30/30). During the written test, the use of notes, textbooks and scientific calculators is allowed. The use of smartphones, tablets and laptops is not allowed.
The oral discussion lasts about 20 minutes and consists of 3 or 4 questions for each candidate, which can be answered orally or through the execution of short calculations. It is aimed at verifying the knowledge of the theoretical principles that govern the mechanical behaviour of soils and the soil-structure interaction.
The final mark is determined as an average value of the scores attributed to the written test and the oral discussion.

In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.