Numerical and Physical Analysis on the Response of a Dam’s Radial Gate to Extreme Loading Performance

Water

Mohammad Hajmohammadian Baghban¹  Ali Farokhi Nejad²  Reza Ghorbani³  Iman Faridmehr⁴ 

[1] Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology (NTNU), 2815 Gjøvik, Norway;Faculty of Engineering, School of Mechanical Engineering, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Malaysia;Production Operation Company of Karkheh Dam Hydropower Plant, Andimeshk, Khuzestan 6483169351, Iran;South Ural State University, Lenin Prospect 76, 454080 Chelyabinsk, Russia;

关键词: spillway radial gate;    hydrodynamic forces;    hydrostatic forces;    cavitation index;    aerator system;   

DOI  :  10.3390/w12092425

来源: DOAJ

【 摘 要 】

Maintaining the reservoir safety of large dams has considerable importance for the public where they are constructed in heavily populated and industrialized areas. The extreme hydrodynamic force caused by ground acceleration, cavitation damage, and vibration are among concerns that threaten the safety of the spillway and its conveyance structures when subjected to a natural disaster, such as earthquakes and severe floods. Current research investigates the hydrostatic and hydrodynamic performance of the Karkheh Dam spillway radial gate through 3-D finite element (FE) models using ABAQUS/Explicit. The common loads applied on the radial gate were reviewed and stress–strain in the skin plate and trunnion were investigated as a result of developed hydrodynamic pressures. The performance of conveyance structures subjected to significant discharge was also investigated through a small-scale model to evaluate the cavitation damage index. The results of this research will help researchers in the field of civil and hydraulic engineering for the risk analysis of the radial gates and conveyance structures.

【 授权许可】

Unknown