In order to make a deep knowledge of the safety condition of Xiluodu Arch Dam, the influences from the normal twoparameter yield criteria and their expanded patterns on the results of the non-linear overload calculations are studied at first. The results show that the influences from the yield criteria, the strength changing pattern of the yielded material and whether is taken the pressed damage into consideration are significant on the safety of the dam. Furthermore, different yield criteria would give dif- ferent safety degrees, while the safety factor of a material with an ideal elastic-plastic performance is maximum, with yielding of single tensile strength is medial and with simultaneous yielding of both the tensile strength and the cohesive force is minimum. If the effect from the pressed damage of concrete is considered, the safety degree would be greatly lowered. Finally, Xiluodu Arch Dam is studied as an actual case along with the calculation and analysis made on the safety degree concerned.
Water Resources and Hydropower Engineering
safety degree of arch dam
Xiluodu Arch Dam