CE 465 Earth Structures

Credit Structure: (2-2)3

Catalog Description:
Highway and railway fills, earth dams. General principles of design, the choice of the type of dam. The circular arc method of stability analysis; the prediction of pore pressures during construction, steady seepage and rapid drawdown. Special methods of analysis for puddlecore and rockfill dams. Design in earthquake areas.

Course Objectives:
Principles of design and stability analysis of rock and earth fill dams.

Prerequisites:
None

Textbook(s):
None

Reference(s):
J.L. Sherard et. al., “Earth and Earth-Rock Dams”, John Wiley, 1963.
G.F. Sowers and H.L. Sally, “Earth and Rockfill Dam Engineering”, Asia Publishing House, 1962.
R.C. Hirschfeld and S.J. Paulos, “Embankment Dam Engineering”, John Wiley, 1973.
B. Singh and H.D. Sharma, “Earth and Rockfill Dams”, John Wiley, 1976.
J.G.Brown, (ed.), “Hydro-Electric Engineering Practice”, Vol.1, 1964.

Syllabus:
1. Principles of Design of Embankment Dams: Advantages of Embankment Dams, Function of an Embankment Dam, Factors Affecting Choice of Cross-Section, Basic Types of Earth- and Rock-fill Dams, Factors Controlling Stability of Earth- and Rock-fill Dams.
2. Limit Design Method of Analysis: Mechanics of Circular Arc Analysis, A More Rigorous Method of Circular Arc Analysis, Use of Computers for the Circular arc Analysis, Stability Analysis of the Partially Submerged Slope
3. Estimation of Pore pressures In Practical Cases: Stability During and at Completion of Construction, Stability when Reservoir is Full, Stability on Rapid Drawdown.
4. Miscellaneous Topics: Special Method of Analysis for Dams with Narrow Plastic Clay Cores, Immediate and Long-Term Deformations of Embankment Foundations, Stability of Rock-fill Dams, Principles of Earthquake Resistant Design of Embankment Dams, Measurement of Pore Pressure in Earth Fill, Factors Affecting Choice of Freeboard.

Homeworks, Quizzes, Projects:
None

Computer Usage:
Principles of using computers for the preparation of stability charts given in published literature is outlined.

Laboratory Work:
1. Measurement of the pore-pressure ratio under the condition of controlled stress ratio.
2. Steady seepage through a model dam.
3. Determination of a flow net by means of electrical analogue.
4. Cylindrical wedge shear test on a compacted clay.

Category Content:
Mathematics and Basic Sciences: None
Engineering Design: 1.5 credits
Engineering Sciences: 1.5 credits
Humanities & Social Sciences: None
Departmental: None

Instructors:
Türker Mirata