Abstract
During the construction of super-high arch dam, the timing of water filling in front of the dam is the key link in the safety management and control of arch dam. Besides the cantilever of dam and the transverse joint aperture of concrete arch dam, the stress in the corridor area at the bottom of the dam should be considered for the timing of water filling in the dam. In this paper, Baihetan super-high arch dam project was taken as an example to study this problem, and the risk of overall dam overhang under gravity load and the influence of different water levels on the transverse joint aperture and stress in the corridor area was systematically analyzed. The research results showed that different water level elevations have obvious influence on the transverse joint aperture and stress state in corridor area, and the selection of water level elevations needs to comprehensively consider the mutual coupling relationship among these influencing factors, so as to realize the effective control of dam safety risk.
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