JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

To learn fundamental knowledge and techniques related to physical modeling in

geotechnical boundary value problems, including similitude, principles of measurement and test program

Course Outcomes

Student will be able to understand scaling laws and modeling considerations for

physical modeling in geotechnical problems both for static and dynamic conditions.

UNIT - I

Similitude and Modeling Principles: Importance of physical Modeling, scaling laws, small-scale model studies in 1-g and N-g, historical Perspectives.

UNIT - II

Design of physical model and model ground preparation: scale effects, flexible and rigid boundary conditions, preparation of sand/clay bed preparation, wet pluviation, dry pluviation, tamping techniques, slurry consolidation, uniformity of sand/clay beds.

UNIT - III

Model planning and measurement strategy: Selection of Model dimension, model containers, preparation of models to test shallow and deep foundations, pull-out behavior, retaining walls, shaking table studies, vertical and inclined loading system, Perspex walls, markers, digital analysis.

UNIT - IV

Sensors and Data Acquisition: Strain gauges, Load cells, Earth Pressure Transducers, LVDTs, Linear Potentiometers, pore pressure transudes, accelerometers, Hydraulic jack, calibration methods, dead weight calibration, pneumatic calibration, frequency of calibration, calibration charts, calibration factor, In-soil & fluid calibration, data acquisition system.

UNIT - V

Recent Developments in Physical Modelling: Static behaviour of shallow and deep foundations, Piles subjected to lateral loading, behaviour of foundation subjected to earthquake loading, foundations subjected to cyclic loading, use of shaking table, behaviour of foundations on expansive soils.

TEXT BOOKS:

• 1. David muir wood, Geotechnical Modelling, Spon Press, Taylor & Francis, 2004.
• 2. Madabhushi, G. - Centrifuge Modeling for Civil Engineers, CRC Press, Taylor and Francis Group, 2015.

REFERENCE BOOKS:

• 1. Taylor, R.N. Geotechnical Centrifuge Technology, Taylor and Francis Publication, 1995. th
• 2. Charles Ng, Zhang, L.M., and Wang, Y.H. (2006) : Proceedings of 6 International Conference on Physical Modeling in Geotechnics, Hong Kong.
• 3. S. Springman, J. Laue & L. Seward, Proceedings of the 7th International Conference on Physical Modelling in Geotechnics, Zurich, Switzerland, 2010.
• 4. Gaudin, C. & White, D. The Proceedings of the 8th international conference on Physical modeling in Geotechnics, Perth, Australia, 2014.