Damage effect of underwater explosion bubble on concrete gravity dam
WEBThe bubble dynamics of underwater explosions near the perpendicular dam structure have been explored. The main focus is then on the sequential damage effects of the underwater explosion shock wave, bubble pulse, bubble jet, and bubble collapse on a concrete gravity dam.
Damage prediction of concrete gravity dams subjected to underwater …
WEBApr 1, 2014 · It should be noted that underwater explosion will damage the dam structure by the shock wave and the bubble pulsation pressure. This study, however, concentrates on the structure responses and damage to direct blast shock wave from …
WEBThe strong shock wave induced by an underwater explosion acting on a concrete gravity dam with a higher loading rate will increase the scabbing strength of the concrete, which is a key parameter that affects the damage to concrete structures. If the effect of the loading rate is remarkable, it is diffi cult to design a model;
Experimental investigation on dynamic response of concrete gravity dam …
WEBThis study conducted ten sets of underwater explosion tests on a scale model of CGD, recording the pressure time histories in the water, along with the acceleration and velocity time histories of the dam induced by both shock wave and bubble pulsation.
Physical Modeling on Dynamic Responses of Gravity Dams by Underwater …
WEBApr 28, 2021 · In this work, physical modeling was conducted to determine the dynamic responses and types of damage to gravity dams subjected to underwater explosions. Five tests under different impoundment levels, centrifugal accelerations, standoff distances, detonation depth, and equivalent weights were performed in a centrifuge.
Numerical investigation of pulsating bubble dynamics in shallow …
WEBJul 16, 2024 · The following study conducts a detailed examination of the shockwave and bubble dynamics of underwater explosion (UNDEX) in case of increasing hydrostatic pressure, explosive mass, and varying boundary conditions such as the presence of seabed and the ocean surface.
WEBShock waves arriving at a dam site are close to plane waves when the center of an underwater explosion is far from the dam site. In general, the wave pressure is calculated with COLE empirical formula.
Study of damage to a high concrete dam subjected to underwater shock …
WEBMay 31, 2014 · To study the effect of a strong underwater shock wave on a concrete dam, this research aims to improve hammer impact methods in model tests. Six 1:200 scale models were designed and tested under distributed impact loads.
Blast-Resistance and Damage Behavior of Underwater Explosion …
WEBSep 3, 2023 · The underwater explosion shock wave caused serious local damage to the dam upper part and the interface between RII and RIII. Bending failure and punching damages were the cause of in the upstream facing downstream of the dams.
Scaling the failure of concrete gravity dam subjected to underwater ...
WEBOct 1, 2022 · Severe dam failures were observed. However, the underwater shock wave generated by the hammer impact method was a plane wave that was far from a realistic spherical wave induced by the underwater explosion. The error was remarkable for near-field underwater explosions.
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