dep 513e syllabus.pdf

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DEP 513E Modeling and Computing in Geotechnical Earthquake Engineering

Fall 2013

Course Code DEP 513E – CRN (15012)

Title Modeling and Computing in Geotechnical Earthquake Engineering

Language English

Type Elective

Graduate Level Masters and PhD

Credit (3+0)

Semester Fall

Prerequisite Engineering Mathematics and Graduate Standing

Program Earthquake Engineering

Instructor:

Dr. M.B. Can Ülker

ITU Institute of Earthquake Engineering and Disaster Management

Room 209

Phone: 212-285-6532/142

E-mail: [email protected]

Office Hours: M-Th 2-3 PM

Hours Wed. 1:30-4:30 PM (EEDMI Basement Classroom)

Objectives

This course is an introduction to modeling and computing in geotechnical earthquake engineeringand geomechanics. The intention of the course is to provide students with state of the artanalytical and computational methods for the analysis of complex geotechnical earthquakeengineering problems. The objectives of the course are such that students acquire knowledge to

analytically and numerically simulate various mechanical phenomena as observed in soilmechanics, foundation engineering and earthquake engineering. This will be achieved bydeveloping a thorough understanding of the physics behind, providing numerical solutions to the boundary value problems and ut ilizing basic numerical methods. Computational techniques usingthe classical methods such as the Finite Element Method and Finite Difference Method will bediscussed in details and applied to basic geo-engineering problems encountered in practice.

Learning how to use some commercial softwares listed below will be an additional outcome.



Content

1. General Introduction

2. Analytical Methods

a) Groundwater Flow b) 1-D Consolidation

c) Wave Equation and Earthquake Excitations

d) 2-D Dynamic Coupled Flow & Deformation

3. Introduction to Numerical Methods

a) Finite Difference Method

b) Finite Element Method

4. Finite Difference Method (FDM) with Applications to Geotechnical Earthquake Engineering

5. Introduction to Finite Element Method (FEM)

6. FEM Applications

a) Earthquake Induced Response of Soil Layers and Embankments

b) Dynamic Stress and Deformation Analysis

c) 1-D and 2-D Dynamic Coupled Flow and Deformation Problem

7. Introduction to Constitutive Modeling

a) Fundamentals

b) Numerical Modeling of Elemental Behavior

8. Term Project Discussions and Final Remarks

Outcomes:

a) A necessary analytical mindset for modeling and approaching the solution of geotechnical

earthquake engineering problems

b) Developing a proper knowledge base for numerical methods used in solving boundary value

problems in geotechnical earthquake engineering

c)

Learning and making use of computer softwares in solving these problems

d) Getting introduced to developing simple yet useful computer codes

e) Describing the concepts of the theory of multi-dimensional dynamic consolidation in terms of

dynamics of porous mediaf) Acquiring knowledge for earthquake-induced response of soil-structure systems

g) Developing an understanding in constitutive modeling of soils under cyclic loads

h)

Developing numerical tools to capture the dynamic behavior of soils under earthquakes

i) Evaluating the amount and type of deformations leading to various instabilities caused by

earthquake excitations in soils



Total head contour and phreatic line in seepage indam

Shadings of vertical displacements for topheading advance in tunneling

Shadings of vertical displacements for topheading advance in tunneling

Wave-induced contours of mean effective stress underneath caisson breakwater

Comparison of finite element analysis, analytical result and experimental result of pore pressuredistribution with depth in soil under waves

-0.4

-0.35

-0.3

-0.25

-0.2

-0.15

-0.1

-0.05

0

0.00 0.50 1.00 1.50 2.00

z

( m )

/p0

This Study FEM

Tsai and Lee (1985)ExperimentTsai and Lee (1995)Analytical

T=1sec



Course Website:

A course website will be developed depending on the number of registered students.

Grading:

Homework Assignments (30%) (Approximately 1 in 2 weeks)

Midterm (20%)Term Project (20%)Final Exam (30%)

Midterm:

There will be one midterm exam given in the middle of the semester. It will be a ‘take home’type midterm and the details will be provided later on.

Term Project:

The students are highly urged to start working on their term projects in a timely manner. It isimportant that they choose their topic as early as possible and work on it regularly in consultation

with the instructor. A list of suggested topics and the requirements will be revealed later in thesemester.

Textbook:

No textbook is required for this course. However, some are recommended. These are listed below. Lecture notes and relevant papers will also be posted on the instructor’s website.

1- Computational geomechanics : with special reference to earthquake engineering

Authors: Zienkiewicz OC, Chang CH, Pastor M, Schrefler BA, Shiomi T.

Publisher: Chichester ; New York : John Wiley, c1999.

ISBN: 0471976407

2-

Finite element analysis in geotechnical engineering: Theory By David M. Potts, Lidija Zdravković

Publisher: Thomas Thelford, 1999.

ISBN: 0 7277 2753 2

3- Finite element analysis in geotechnical engineering: Application

By David M. Potts, Lidija Zdravković

Publisher: Thomas Thelford, 2001.

ISBN: 0 7277 2783 4

4- Amos Gilat (2008), “ MATLAB An Introduction with applications”, 3rd Ed. John Wiley

5-

Prem K. Kythe and Dongming Wei (2003) “ An Introduction to Linear and Nonlinear

Finite Element Analysis”; Birkhauser.

6- J N Reddy (1993), “An Introduction to Finite Element Method”; McGraw Hill.

Computer Programs and Packages:

The following computer programs/packages (latest available versions at ITU) will be introduced



and used during the class; MAPLE, MATLAB, GEO-SLOPE PROGRAMS (SIGMA-W, SEEP-

W). Also there are plenty of commercial numerical softwares whose student versions are

available on or off-campus such as ANSYS, ABAQUS, Plaxis etc.

Note: Using softwares and developing codes and worksheets with MATLAB and MAPLE will

be necessary. It is a plus if you are experienced with them or with an FEM code but it is notrequired.

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