УСТОЙЧИВОСТЬ И ПРОЧНОСТЬ НОВОЙ КОНСТРУКЦИИ ПЛОТИНЫ ИЗ ОСОБО ТОЩЕГО УКАТАННОГО БЕТОНА ПРИ МАКСИМАЛЬНЫХ СЕЙСМИЧЕСКИХ ВОЗДЕЙСТВИЯХ

STABILITY AND STRENGTH OF NEW DAM OF ROLLER COMPACTED VERY LEAN CONCRETE UNDER MAXIMUM SEISMIC ACTIONS

Results of seismic stress-strain state analysis are considered for the new symmetrical 100 m high dam with slopes of 1/0.5 (V/H), outer zones of roller compacted concrete (RCC) and wide central zone of rockfill enriched with cement mortar. As a seismic loading the horizontal and vertical components of strong earthquakes of 8 and 9 grades were assumed. As a RCC model the elastoplastic model of RCC with shear parameters of joints was used. It was found that the new dam has double seismic safety under action of earthquake of 9 grade that indicates for consideration of the dam in hydroprojects in very seismic regions of Siberia and Far East of Russia.