The size and shape of opening in dam causes the ...

The size and shape of opening in dam causes the

stress concentration, it also causes the stress variation in the

rest of the dam cross section. The gravity method of the analysis

does not consider the size of opening and the elastic property

of dam material. Thus the objective of study is comprises of

the Finite Element Method which considers the size of

opening, elastic property of material, and stress distribution

because of geometric discontinuity in cross section of dam.

Stress concentration inside the dam increases with the opening

in dam which results in the failure of dam. Hence it is

necessary to analyses large opening inside the dam. By making

the percentage area of opening constant and varying size and

shape of opening the analysis is carried out. For this purpose

a section of Koyna Dam is considered. Dam is defined as a

plane strain element in FEM, based on geometry and loading

condition. Thus this available information specified our path

of approach to carry out 2D plane strain analysis. The results

obtained are then compared mutually to get most efficient

way of providing large opening in the gravity dam.

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