Perimetral Joint Effects on Stress Distribution and Seismic Behaviour of Arch Dams | CU Experts

<p>In the present study, effect of pulvino and its perimetral joint on stress distribution within dam body is investigated. Dez dam with 203m height is selected as case study and all the contraction joints of the dam body are modelled using discrete crack approach. The reservoir is assumed compressible and the foundation is modelled as a mass-less medium. The system is analyzed under static loads taking account for stage construction effects, hydrostatic loads and thermal loads taking into account the effect of sun radiation. At last, the FE model is excited using MCE earthquake records. It is found that when the perimetral joint between the saddle and the dam body is modelled, the direction of the principal stresses and their distribution patterns are changed and the safety of the system is improved. In addition, over stressed surfaces on the faces of the dam body decreased in comparison with the model without the perimetral joint.</p>

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