Student:	Yasemin BAYRAM
Supervisor:	Prof. Dr. Alemdar BAYRAKTAR
Department:	İnşaat Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	Stochastic Dynamic Analysis of Dam-Reservoir-Foundation Systems to Spatially Varying Ground Motion
Level:	Ph.D.
Acceptance Date:	16/5/2008
Number of Pages:	176
Registration Number:	Di636

Summary:

In this study, it is aimed to perform the stochastic dynamic analysis of damreservoir-

foundation systems to spatially varying earthquake ground motion by using

Lagrangian approach. Since significant variation of earthquake ground motion exists over

the base dimensions of large structures such as dams, spatially varying effects of the

ground motion including wave passage effects, incoherence effects and site response

effects should be taken into account in the analysis of dams. For that reason, variable

number-nodes two dimensional isoparametric fluid finite elements are programmed in

FORTRAN language and incorporated into a general-purpose computer program for

stochastic dynamic analysis of structure systems to spatially varying earthquake ground

motion, SVEM, and named as SVEMF. This Ph.D. thesis in which stochastic dynamic

responses of dam-reservoir-foundation systems to spatially varying earthquake ground

motion are determined consists of four main chapters.

The first chapter includes literature researches and formulations of stochastic

dynamic analysis of fluid-structure-soil interaction systems by Lagrangian approach. In the

second chapter, developed computer program is introduced and modal analysis of a rigid

fluid tank and fluid-structure interaction system. The systems are modelled by finite

element method to verify the developed program. In addition to, the finite element model

of the dam-reservoir-foundation system and earthquake ground motion which was chosen

is given in this section. In third chapter, the mean of maximum response values and

variances obtained from the stochastic analysis of dam-reservoir-foundation system to

spatially varying ground motion are discussed in detail. The conclusions of the research

and recommendations for the future works are given in the fourth chapter.

As a result, it is focused that spatially varying earthquake ground motion should be

taken into account in the stochastic dynamic analysis of dam-reservoir-foundation systems.

Key Words: Lagrangian Approach, Finite Element Method, Dam-Reservoir-Foundation

Interaction System, Spatially Varying Earthquake Ground Motion,

Stochastic Dynamic Analysis