Unit information: Soil-Structure Interaction 4 in 2019/20

Unit name	Soil-Structure Interaction 4
Unit code	CENGM2700
Credit points	10
Level of study	M/7
Teaching block(s)	Teaching Block 1 (weeks 1 - 12)
Unit director	Professor. Mylonakis
Open unit status	Not open
Pre-requisites	None
Co-requisites	None
School/department	School of Civil, Aerospace and Design Engineering
Faculty	Faculty of Engineering

Description including Unit Aims

Soil-structure interaction (SSI) is central to the design and performance of a variety of structures including building foundations, retaining walls, tunnels and axially/laterally loaded piles, under both static and dynamic loads. In such problems earth pressures depend on structure movements or deflections, and structure movements or deflections depend on earth pressures. The unit will be primarily coursework based and will provide an opportunity for students to use state-of-the-art geotechnical software that is employed by leading consultants worldwide.

Students will use PLAXIS, a finite element package intended for the two-dimensional analysis of deformation and stability in geotechnical engineering, that is well suited to modelling the interaction between a structure and the soil. After working through example problems contained in the introductory tutorial manual, students will use Plaxis in the analysis of some basic foundation engineering problems involving footings and retaining walls. Parallel analyses will be undertaken using structural analysis software, such as GSA and ABAQUS. Approximate analysis of piles and retaining walls on Matlab will also be covered. Comparisons will be made between the computer solutions and closed form analyses, and students will be encouraged to evaluate limitations of each approach.

Students will present and discuss their findings in an individual report. To facilitate early feedback to the students, the report will be submitted in two phases (e.g., end of 6th week, end of 12th week).

Aims:

1. To introduce students to the use of finite element software in analysing geotechnical engineering problems;
2. To develop students' awareness of the limitations of such analyses;
3. To enhance students' understanding of the factors that influence soil-structure interaction;
4. To provide insight as to the differences between static and dynamic soil-structure interaction phenomena in geotechnical engineering.

Intended Learning Outcomes

By the end of the course, successful students will:

1. Have some understanding of the response of structures to ground deformations and of soil-structure interaction,

2. Have developed a capability in modelling geotechnical problems with commercial and in-house finite element software and interpreting the results,

3. Have undertaken a detailed study of some foundation and retaining wall problems and written up their findings in a report,

4. Have developed basic understanding on certain dynamic soil-structure interaction problems involving earthquake loads.

Teaching Information

Lectures and computing labs.

Assessment Information

Coursework: 100% ULO

Reading and References

1. Avoiding Damage caused by Soil-structure Interaction: Lessons learnt from Case Histories. Edited by Richard Kastner, Oddvar Kjekstad and Jamie Standing. Thomas Telford Ltd 2003.
2. Soil-structure interaction :the real behaviour of structures. The Institution of Civil Engineers, International Association for Bridge and Structural Engineering. London : The Institution of Structural Engineers, 1989.
3. Horvath, J (2002). Soil-Structure Interaction Research Project - Basic SSI Concepts and Applications Overview. Center for Geotechnology, Manhattan College. Report No. CGT-2002-2. Can be downloaded from http://jshce.com/files/cgt-2002-2.pdf
4. Plaxis Introductory 2D and Full Plaxis 2D (2018). Tutorial and Reference Manuals (online)
5. Wolf, JP (1985). Dynamic Soil-Structure Interaction, Prentice Hall
6. Wolf JP, Deeks, AJ (2004). Foundation Vibration Analysis: A Strength of Materials Approach, Elsevier
7. NIST (2012), Soil-Structure Interaction for Building Structures, Report GCR 12-917-21, National Institute of Standards and Technology